| 1 | /* vi: set sw=4 ts=4: */
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| 2 | /*
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| 3 | * tiny vi.c: A small 'vi' clone
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| 4 | * Copyright (C) 2000, 2001 Sterling Huxley <sterling@europa.com>
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| 5 | *
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| 6 | * Licensed under GPLv2 or later, see file LICENSE in this source tree.
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| 7 | */
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| 8 |
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| 9 | /*
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| 10 | * Things To Do:
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| 11 | * EXINIT
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| 12 | * $HOME/.exrc and ./.exrc
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| 13 | * add magic to search /foo.*bar
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| 14 | * add :help command
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| 15 | * :map macros
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| 16 | * if mark[] values were line numbers rather than pointers
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| 17 | * it would be easier to change the mark when add/delete lines
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| 18 | * More intelligence in refresh()
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| 19 | * ":r !cmd" and "!cmd" to filter text through an external command
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| 20 | * An "ex" line oriented mode- maybe using "cmdedit"
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| 21 | */
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| 22 |
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| 23 | //config:config VI
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| 24 | //config: bool "vi"
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| 25 | //config: default y
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| 26 | //config: help
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| 27 | //config: 'vi' is a text editor. More specifically, it is the One True
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| 28 | //config: text editor <grin>. It does, however, have a rather steep
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| 29 | //config: learning curve. If you are not already comfortable with 'vi'
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| 30 | //config: you may wish to use something else.
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| 31 | //config:
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| 32 | //config:config FEATURE_VI_MAX_LEN
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| 33 | //config: int "Maximum screen width in vi"
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| 34 | //config: range 256 16384
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| 35 | //config: default 4096
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| 36 | //config: depends on VI
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| 37 | //config: help
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| 38 | //config: Contrary to what you may think, this is not eating much.
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| 39 | //config: Make it smaller than 4k only if you are very limited on memory.
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| 40 | //config:
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| 41 | //config:config FEATURE_VI_8BIT
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| 42 | //config: bool "Allow vi to display 8-bit chars (otherwise shows dots)"
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| 43 | //config: default n
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| 44 | //config: depends on VI
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| 45 | //config: help
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| 46 | //config: If your terminal can display characters with high bit set,
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| 47 | //config: you may want to enable this. Note: vi is not Unicode-capable.
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| 48 | //config: If your terminal combines several 8-bit bytes into one character
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| 49 | //config: (as in Unicode mode), this will not work properly.
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| 50 | //config:
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| 51 | //config:config FEATURE_VI_COLON
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| 52 | //config: bool "Enable \":\" colon commands (no \"ex\" mode)"
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| 53 | //config: default y
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| 54 | //config: depends on VI
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| 55 | //config: help
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| 56 | //config: Enable a limited set of colon commands for vi. This does not
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| 57 | //config: provide an "ex" mode.
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| 58 | //config:
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| 59 | //config:config FEATURE_VI_YANKMARK
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| 60 | //config: bool "Enable yank/put commands and mark cmds"
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| 61 | //config: default y
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| 62 | //config: depends on VI
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| 63 | //config: help
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| 64 | //config: This will enable you to use yank and put, as well as mark in
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| 65 | //config: busybox vi.
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| 66 | //config:
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| 67 | //config:config FEATURE_VI_SEARCH
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| 68 | //config: bool "Enable search and replace cmds"
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| 69 | //config: default y
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| 70 | //config: depends on VI
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| 71 | //config: help
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| 72 | //config: Select this if you wish to be able to do search and replace in
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| 73 | //config: busybox vi.
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| 74 | //config:
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| 75 | //config:config FEATURE_VI_REGEX_SEARCH
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| 76 | //config: bool "Enable regex in search and replace"
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| 77 | //config: default n # Uses GNU regex, which may be unavailable. FIXME
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| 78 | //config: depends on FEATURE_VI_SEARCH
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| 79 | //config: help
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| 80 | //config: Use extended regex search.
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| 81 | //config:
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| 82 | //config:config FEATURE_VI_USE_SIGNALS
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| 83 | //config: bool "Catch signals"
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| 84 | //config: default y
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| 85 | //config: depends on VI
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| 86 | //config: help
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| 87 | //config: Selecting this option will make busybox vi signal aware. This will
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| 88 | //config: make busybox vi support SIGWINCH to deal with Window Changes, catch
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| 89 | //config: Ctrl-Z and Ctrl-C and alarms.
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| 90 | //config:
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| 91 | //config:config FEATURE_VI_DOT_CMD
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| 92 | //config: bool "Remember previous cmd and \".\" cmd"
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| 93 | //config: default y
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| 94 | //config: depends on VI
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| 95 | //config: help
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| 96 | //config: Make busybox vi remember the last command and be able to repeat it.
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| 97 | //config:
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| 98 | //config:config FEATURE_VI_READONLY
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| 99 | //config: bool "Enable -R option and \"view\" mode"
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| 100 | //config: default y
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| 101 | //config: depends on VI
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| 102 | //config: help
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| 103 | //config: Enable the read-only command line option, which allows the user to
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| 104 | //config: open a file in read-only mode.
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| 105 | //config:
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| 106 | //config:config FEATURE_VI_SETOPTS
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| 107 | //config: bool "Enable set-able options, ai ic showmatch"
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| 108 | //config: default y
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| 109 | //config: depends on VI
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| 110 | //config: help
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| 111 | //config: Enable the editor to set some (ai, ic, showmatch) options.
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| 112 | //config:
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| 113 | //config:config FEATURE_VI_SET
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| 114 | //config: bool "Support for :set"
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| 115 | //config: default y
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| 116 | //config: depends on VI
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| 117 | //config: help
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| 118 | //config: Support for ":set".
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| 119 | //config:
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| 120 | //config:config FEATURE_VI_WIN_RESIZE
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| 121 | //config: bool "Handle window resize"
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| 122 | //config: default y
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| 123 | //config: depends on VI
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| 124 | //config: help
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| 125 | //config: Make busybox vi behave nicely with terminals that get resized.
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| 126 | //config:
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| 127 | //config:config FEATURE_VI_ASK_TERMINAL
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| 128 | //config: bool "Use 'tell me cursor position' ESC sequence to measure window"
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| 129 | //config: default y
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| 130 | //config: depends on VI
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| 131 | //config: help
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| 132 | //config: If terminal size can't be retrieved and $LINES/$COLUMNS are not set,
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| 133 | //config: this option makes vi perform a last-ditch effort to find it:
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| 134 | //config: position cursor to 999,999 and ask terminal to report real
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| 135 | //config: cursor position using "ESC [ 6 n" escape sequence, then read stdin.
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| 136 | //config:
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| 137 | //config: This is not clean but helps a lot on serial lines and such.
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| 138 | //config:config FEATURE_VI_UNDO
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| 139 | //config: bool "Support undo command 'u'"
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| 140 | //config: default y
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| 141 | //config: depends on VI
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| 142 | //config: help
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| 143 | //config: Support the 'u' command to undo insertion, deletion, and replacement
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| 144 | //config: of text.
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| 145 | //config:config FEATURE_VI_UNDO_QUEUE
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| 146 | //config: bool "Enable undo operation queuing"
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| 147 | //config: default y
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| 148 | //config: depends on FEATURE_VI_UNDO
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| 149 | //config: help
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| 150 | //config: The vi undo functions can use an intermediate queue to greatly lower
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| 151 | //config: malloc() calls and overhead. When the maximum size of this queue is
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| 152 | //config: reached, the contents of the queue are committed to the undo stack.
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| 153 | //config: This increases the size of the undo code and allows some undo
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| 154 | //config: operations (especially un-typing/backspacing) to be far more useful.
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| 155 | //config:config FEATURE_VI_UNDO_QUEUE_MAX
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| 156 | //config: int "Maximum undo character queue size"
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| 157 | //config: default 256
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| 158 | //config: range 32 65536
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| 159 | //config: depends on FEATURE_VI_UNDO_QUEUE
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| 160 | //config: help
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| 161 | //config: This option sets the number of bytes used at runtime for the queue.
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| 162 | //config: Smaller values will create more undo objects and reduce the amount
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| 163 | //config: of typed or backspaced characters that are grouped into one undo
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| 164 | //config: operation; larger values increase the potential size of each undo
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| 165 | //config: and will generally malloc() larger objects and less frequently.
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| 166 | //config: Unless you want more (or less) frequent "undo points" while typing,
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| 167 | //config: you should probably leave this unchanged.
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| 168 |
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| 169 | //applet:IF_VI(APPLET(vi, BB_DIR_BIN, BB_SUID_DROP))
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| 170 |
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| 171 | //kbuild:lib-$(CONFIG_VI) += vi.o
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| 172 |
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| 173 | //usage:#define vi_trivial_usage
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| 174 | //usage: "[OPTIONS] [FILE]..."
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| 175 | //usage:#define vi_full_usage "\n\n"
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| 176 | //usage: "Edit FILE\n"
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| 177 | //usage: IF_FEATURE_VI_COLON(
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| 178 | //usage: "\n -c CMD Initial command to run ($EXINIT also available)"
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| 179 | //usage: )
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| 180 | //usage: IF_FEATURE_VI_READONLY(
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| 181 | //usage: "\n -R Read-only"
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| 182 | //usage: )
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| 183 | //usage: "\n -H List available features"
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| 184 |
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| 185 | #include "libbb.h"
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| 186 | /* Should be after libbb.h: on some systems regex.h needs sys/types.h: */
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| 187 | #if ENABLE_FEATURE_VI_REGEX_SEARCH
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| 188 | # include <regex.h>
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| 189 | #endif
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| 190 |
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| 191 | /* the CRASHME code is unmaintained, and doesn't currently build */
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| 192 | #define ENABLE_FEATURE_VI_CRASHME 0
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| 193 |
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| 194 | #define ENABLE_BASIC_MULTI_CHAR_CODE
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| 195 |
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| 196 | #if ENABLE_LOCALE_SUPPORT
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| 197 |
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| 198 | #if ENABLE_FEATURE_VI_8BIT
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| 199 | //FIXME: this does not work properly for Unicode anyway
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| 200 | # define Isprint(c) (isprint)(c)
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| 201 | #else
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| 202 | # define Isprint(c) isprint_asciionly(c)
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| 203 | #endif
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| 204 |
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| 205 | #else
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| 206 |
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| 207 | /* 0x9b is Meta-ESC */
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| 208 | #if ENABLE_FEATURE_VI_8BIT
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| 209 | #ifndef ENABLE_BASIC_MULTI_CHAR_CODE
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| 210 | # define Isprint(c) ((unsigned char)(c) >= ' ' && (c) != 0x7f && (unsigned char)(c) != 0x9b)
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| 211 | #else
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| 212 | bool Isprint(unsigned char c)
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| 213 | {
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| 214 | static int mbc_st = 0;
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| 215 |
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| 216 | if (mbc_st == 0) {
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| 217 | if ((c & 0xE0) == 0xC0) { mbc_st = 2; }
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| 218 | else if ((c & 0xF0) == 0xE0) { mbc_st = 3; }
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| 219 | else if ((c & 0xF8) == 0xF0) { mbc_st = 4; }
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| 220 | else if ((c & 0xFC) == 0xF8) { mbc_st = 5; }
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| 221 | else if ((c & 0xFE) == 0xFC) { mbc_st = 6; }
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| 222 | }
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| 223 |
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| 224 | if (mbc_st == 0) {
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| 225 | return ((unsigned char)(c) >= ' ' && (c) != 0x7f && (unsigned char)(c) != 0x9b);
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| 226 | }
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| 227 |
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| 228 | mbc_st--;
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| 229 | return true;
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| 230 | }
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| 231 | #endif
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| 232 | #else
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| 233 | # define Isprint(c) ((unsigned char)(c) >= ' ' && (unsigned char)(c) < 0x7f)
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| 234 | #endif
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| 235 |
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| 236 | #endif
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| 237 |
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| 238 |
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| 239 | enum {
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| 240 | MAX_TABSTOP = 32, // sanity limit
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| 241 | // User input len. Need not be extra big.
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| 242 | // Lines in file being edited *can* be bigger than this.
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| 243 | MAX_INPUT_LEN = 128,
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| 244 | // Sanity limits. We have only one buffer of this size.
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| 245 | MAX_SCR_COLS = CONFIG_FEATURE_VI_MAX_LEN,
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| 246 | MAX_SCR_ROWS = CONFIG_FEATURE_VI_MAX_LEN,
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| 247 | };
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| 248 |
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| 249 | /* VT102 ESC sequences.
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| 250 | * See "Xterm Control Sequences"
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| 251 | * http://invisible-island.net/xterm/ctlseqs/ctlseqs.html
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| 252 | */
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| 253 | /* Inverse/Normal text */
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| 254 | #define ESC_BOLD_TEXT "\033[7m"
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| 255 | #define ESC_NORM_TEXT "\033[0m"
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| 256 | /* Bell */
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| 257 | #define ESC_BELL "\007"
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| 258 | /* Clear-to-end-of-line */
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| 259 | #define ESC_CLEAR2EOL "\033[K"
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| 260 | /* Clear-to-end-of-screen.
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| 261 | * (We use default param here.
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| 262 | * Full sequence is "ESC [ <num> J",
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| 263 | * <num> is 0/1/2 = "erase below/above/all".)
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| 264 | */
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| 265 | #define ESC_CLEAR2EOS "\033[J"
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| 266 | /* Cursor to given coordinate (1,1: top left) */
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| 267 | #define ESC_SET_CURSOR_POS "\033[%u;%uH"
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| 268 | //UNUSED
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| 269 | ///* Cursor up and down */
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| 270 | //#define ESC_CURSOR_UP "\033[A"
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| 271 | //#define ESC_CURSOR_DOWN "\n"
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| 272 |
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| 273 | #if ENABLE_FEATURE_VI_DOT_CMD || ENABLE_FEATURE_VI_YANKMARK
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| 274 | // cmds modifying text[]
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| 275 | // vda: removed "aAiIs" as they switch us into insert mode
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| 276 | // and remembering input for replay after them makes no sense
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| 277 | static const char modifying_cmds[] ALIGN1 = "cCdDJoOpPrRxX<>~";
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| 278 | #endif
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| 279 |
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| 280 | enum {
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| 281 | YANKONLY = FALSE,
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| 282 | YANKDEL = TRUE,
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| 283 | FORWARD = 1, // code depends on "1" for array index
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| 284 | BACK = -1, // code depends on "-1" for array index
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| 285 | LIMITED = 0, // how much of text[] in char_search
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| 286 | FULL = 1, // how much of text[] in char_search
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| 287 |
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| 288 | S_BEFORE_WS = 1, // used in skip_thing() for moving "dot"
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| 289 | S_TO_WS = 2, // used in skip_thing() for moving "dot"
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| 290 | S_OVER_WS = 3, // used in skip_thing() for moving "dot"
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| 291 | S_END_PUNCT = 4, // used in skip_thing() for moving "dot"
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| 292 | S_END_ALNUM = 5, // used in skip_thing() for moving "dot"
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| 293 | };
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| 294 |
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| 295 |
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| 296 | /* vi.c expects chars to be unsigned. */
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| 297 | /* busybox build system provides that, but it's better */
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| 298 | /* to audit and fix the source */
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| 299 |
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| 300 | struct globals {
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| 301 | /* many references - keep near the top of globals */
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| 302 | char *text, *end; // pointers to the user data in memory
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| 303 | char *dot; // where all the action takes place
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| 304 | int text_size; // size of the allocated buffer
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| 305 |
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| 306 | /* the rest */
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| 307 | smallint vi_setops;
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| 308 | #define VI_AUTOINDENT 1
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| 309 | #define VI_SHOWMATCH 2
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| 310 | #define VI_IGNORECASE 4
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| 311 | #define VI_ERR_METHOD 8
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| 312 | #define autoindent (vi_setops & VI_AUTOINDENT)
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| 313 | #define showmatch (vi_setops & VI_SHOWMATCH )
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| 314 | #define ignorecase (vi_setops & VI_IGNORECASE)
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| 315 | /* indicate error with beep or flash */
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| 316 | #define err_method (vi_setops & VI_ERR_METHOD)
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| 317 |
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| 318 | #if ENABLE_FEATURE_VI_READONLY
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| 319 | smallint readonly_mode;
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| 320 | #define SET_READONLY_FILE(flags) ((flags) |= 0x01)
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| 321 | #define SET_READONLY_MODE(flags) ((flags) |= 0x02)
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| 322 | #define UNSET_READONLY_FILE(flags) ((flags) &= 0xfe)
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| 323 | #else
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| 324 | #define SET_READONLY_FILE(flags) ((void)0)
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| 325 | #define SET_READONLY_MODE(flags) ((void)0)
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| 326 | #define UNSET_READONLY_FILE(flags) ((void)0)
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| 327 | #endif
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| 328 |
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| 329 | smallint editing; // >0 while we are editing a file
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| 330 | // [code audit says "can be 0, 1 or 2 only"]
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| 331 | smallint cmd_mode; // 0=command 1=insert 2=replace
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| 332 | int modified_count; // buffer contents changed if !0
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| 333 | int last_modified_count; // = -1;
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| 334 | int save_argc; // how many file names on cmd line
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| 335 | int cmdcnt; // repetition count
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| 336 | unsigned rows, columns; // the terminal screen is this size
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| 337 | #if ENABLE_FEATURE_VI_ASK_TERMINAL
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| 338 | int get_rowcol_error;
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| 339 | #endif
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| 340 | int crow, ccol; // cursor is on Crow x Ccol
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| 341 | int offset; // chars scrolled off the screen to the left
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| 342 | int have_status_msg; // is default edit status needed?
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| 343 | // [don't make smallint!]
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| 344 | int last_status_cksum; // hash of current status line
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| 345 | char *current_filename;
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| 346 | char *screenbegin; // index into text[], of top line on the screen
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| 347 | char *screen; // pointer to the virtual screen buffer
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| 348 | int screensize; // and its size
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| 349 | int tabstop;
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| 350 | int last_forward_char; // last char searched for with 'f' (int because of Unicode)
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| 351 | char erase_char; // the users erase character
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| 352 | char last_input_char; // last char read from user
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| 353 |
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| 354 | #if ENABLE_FEATURE_VI_DOT_CMD
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| 355 | smallint adding2q; // are we currently adding user input to q
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| 356 | int lmc_len; // length of last_modifying_cmd
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| 357 | char *ioq, *ioq_start; // pointer to string for get_one_char to "read"
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| 358 | #endif
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| 359 | #if ENABLE_FEATURE_VI_USE_SIGNALS || ENABLE_FEATURE_VI_CRASHME
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| 360 | int my_pid;
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| 361 | #endif
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| 362 | #if ENABLE_FEATURE_VI_SEARCH
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| 363 | char *last_search_pattern; // last pattern from a '/' or '?' search
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| 364 | #endif
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| 365 |
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| 366 | /* former statics */
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| 367 | #if ENABLE_FEATURE_VI_YANKMARK
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| 368 | char *edit_file__cur_line;
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| 369 | #endif
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| 370 | int refresh__old_offset;
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| 371 | int format_edit_status__tot;
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| 372 |
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| 373 | /* a few references only */
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| 374 | #if ENABLE_FEATURE_VI_YANKMARK
|
|---|
| 375 | int YDreg, Ureg; // default delete register and orig line for "U"
|
|---|
| 376 | char *reg[28]; // named register a-z, "D", and "U" 0-25,26,27
|
|---|
| 377 | char *mark[28]; // user marks points somewhere in text[]- a-z and previous context ''
|
|---|
| 378 | char *context_start, *context_end;
|
|---|
| 379 | #endif
|
|---|
| 380 | #if ENABLE_FEATURE_VI_USE_SIGNALS
|
|---|
| 381 | sigjmp_buf restart; // catch_sig()
|
|---|
| 382 | #endif
|
|---|
| 383 | struct termios term_orig, term_vi; // remember what the cooked mode was
|
|---|
| 384 | #if ENABLE_FEATURE_VI_COLON
|
|---|
| 385 | char *initial_cmds[3]; // currently 2 entries, NULL terminated
|
|---|
| 386 | #endif
|
|---|
| 387 | // Should be just enough to hold a key sequence,
|
|---|
| 388 | // but CRASHME mode uses it as generated command buffer too
|
|---|
| 389 | #if ENABLE_FEATURE_VI_CRASHME
|
|---|
| 390 | char readbuffer[128];
|
|---|
| 391 | #else
|
|---|
| 392 | char readbuffer[KEYCODE_BUFFER_SIZE];
|
|---|
| 393 | #endif
|
|---|
| 394 | #define STATUS_BUFFER_LEN 200
|
|---|
| 395 | char status_buffer[STATUS_BUFFER_LEN]; // messages to the user
|
|---|
| 396 | #if ENABLE_FEATURE_VI_DOT_CMD
|
|---|
| 397 | char last_modifying_cmd[MAX_INPUT_LEN]; // last modifying cmd for "."
|
|---|
| 398 | #endif
|
|---|
| 399 | char get_input_line__buf[MAX_INPUT_LEN]; /* former static */
|
|---|
| 400 |
|
|---|
| 401 | char scr_out_buf[MAX_SCR_COLS + MAX_TABSTOP * 2];
|
|---|
| 402 | #if ENABLE_FEATURE_VI_UNDO
|
|---|
| 403 | // undo_push() operations
|
|---|
| 404 | #define UNDO_INS 0
|
|---|
| 405 | #define UNDO_DEL 1
|
|---|
| 406 | #define UNDO_INS_CHAIN 2
|
|---|
| 407 | #define UNDO_DEL_CHAIN 3
|
|---|
| 408 | // UNDO_*_QUEUED must be equal to UNDO_xxx ORed with UNDO_QUEUED_FLAG
|
|---|
| 409 | #define UNDO_QUEUED_FLAG 4
|
|---|
| 410 | #define UNDO_INS_QUEUED 4
|
|---|
| 411 | #define UNDO_DEL_QUEUED 5
|
|---|
| 412 | #define UNDO_USE_SPOS 32
|
|---|
| 413 | #define UNDO_EMPTY 64
|
|---|
| 414 | // Pass-through flags for functions that can be undone
|
|---|
| 415 | #define NO_UNDO 0
|
|---|
| 416 | #define ALLOW_UNDO 1
|
|---|
| 417 | #define ALLOW_UNDO_CHAIN 2
|
|---|
| 418 | # if ENABLE_FEATURE_VI_UNDO_QUEUE
|
|---|
| 419 | #define ALLOW_UNDO_QUEUED 3
|
|---|
| 420 | char undo_queue_state;
|
|---|
| 421 | int undo_q;
|
|---|
| 422 | char *undo_queue_spos; // Start position of queued operation
|
|---|
| 423 | char undo_queue[CONFIG_FEATURE_VI_UNDO_QUEUE_MAX];
|
|---|
| 424 | # else
|
|---|
| 425 | // If undo queuing disabled, don't invoke the missing queue logic
|
|---|
| 426 | #define ALLOW_UNDO_QUEUED 1
|
|---|
| 427 | # endif
|
|---|
| 428 |
|
|---|
| 429 | struct undo_object {
|
|---|
| 430 | struct undo_object *prev; // Linking back avoids list traversal (LIFO)
|
|---|
| 431 | int start; // Offset where the data should be restored/deleted
|
|---|
| 432 | int length; // total data size
|
|---|
| 433 | uint8_t u_type; // 0=deleted, 1=inserted, 2=swapped
|
|---|
| 434 | char undo_text[1]; // text that was deleted (if deletion)
|
|---|
| 435 | } *undo_stack_tail;
|
|---|
| 436 | #endif /* ENABLE_FEATURE_VI_UNDO */
|
|---|
| 437 | };
|
|---|
| 438 | #define G (*ptr_to_globals)
|
|---|
| 439 | #define text (G.text )
|
|---|
| 440 | #define text_size (G.text_size )
|
|---|
| 441 | #define end (G.end )
|
|---|
| 442 | #define dot (G.dot )
|
|---|
| 443 | #define reg (G.reg )
|
|---|
| 444 |
|
|---|
| 445 | #define vi_setops (G.vi_setops )
|
|---|
| 446 | #define editing (G.editing )
|
|---|
| 447 | #define cmd_mode (G.cmd_mode )
|
|---|
| 448 | #define modified_count (G.modified_count )
|
|---|
| 449 | #define last_modified_count (G.last_modified_count)
|
|---|
| 450 | #define save_argc (G.save_argc )
|
|---|
| 451 | #define cmdcnt (G.cmdcnt )
|
|---|
| 452 | #define rows (G.rows )
|
|---|
| 453 | #define columns (G.columns )
|
|---|
| 454 | #define crow (G.crow )
|
|---|
| 455 | #define ccol (G.ccol )
|
|---|
| 456 | #define offset (G.offset )
|
|---|
| 457 | #define status_buffer (G.status_buffer )
|
|---|
| 458 | #define have_status_msg (G.have_status_msg )
|
|---|
| 459 | #define last_status_cksum (G.last_status_cksum )
|
|---|
| 460 | #define current_filename (G.current_filename )
|
|---|
| 461 | #define screen (G.screen )
|
|---|
| 462 | #define screensize (G.screensize )
|
|---|
| 463 | #define screenbegin (G.screenbegin )
|
|---|
| 464 | #define tabstop (G.tabstop )
|
|---|
| 465 | #define last_forward_char (G.last_forward_char )
|
|---|
| 466 | #define erase_char (G.erase_char )
|
|---|
| 467 | #define last_input_char (G.last_input_char )
|
|---|
| 468 | #if ENABLE_FEATURE_VI_READONLY
|
|---|
| 469 | #define readonly_mode (G.readonly_mode )
|
|---|
| 470 | #else
|
|---|
| 471 | #define readonly_mode 0
|
|---|
| 472 | #endif
|
|---|
| 473 | #define adding2q (G.adding2q )
|
|---|
| 474 | #define lmc_len (G.lmc_len )
|
|---|
| 475 | #define ioq (G.ioq )
|
|---|
| 476 | #define ioq_start (G.ioq_start )
|
|---|
| 477 | #define my_pid (G.my_pid )
|
|---|
| 478 | #define last_search_pattern (G.last_search_pattern)
|
|---|
| 479 |
|
|---|
| 480 | #define edit_file__cur_line (G.edit_file__cur_line)
|
|---|
| 481 | #define refresh__old_offset (G.refresh__old_offset)
|
|---|
| 482 | #define format_edit_status__tot (G.format_edit_status__tot)
|
|---|
| 483 |
|
|---|
| 484 | #define YDreg (G.YDreg )
|
|---|
| 485 | #define Ureg (G.Ureg )
|
|---|
| 486 | #define mark (G.mark )
|
|---|
| 487 | #define context_start (G.context_start )
|
|---|
| 488 | #define context_end (G.context_end )
|
|---|
| 489 | #define restart (G.restart )
|
|---|
| 490 | #define term_orig (G.term_orig )
|
|---|
| 491 | #define term_vi (G.term_vi )
|
|---|
| 492 | #define initial_cmds (G.initial_cmds )
|
|---|
| 493 | #define readbuffer (G.readbuffer )
|
|---|
| 494 | #define scr_out_buf (G.scr_out_buf )
|
|---|
| 495 | #define last_modifying_cmd (G.last_modifying_cmd )
|
|---|
| 496 | #define get_input_line__buf (G.get_input_line__buf)
|
|---|
| 497 |
|
|---|
| 498 | #if ENABLE_FEATURE_VI_UNDO
|
|---|
| 499 | #define undo_stack_tail (G.undo_stack_tail )
|
|---|
| 500 | # if ENABLE_FEATURE_VI_UNDO_QUEUE
|
|---|
| 501 | #define undo_queue_state (G.undo_queue_state)
|
|---|
| 502 | #define undo_q (G.undo_q )
|
|---|
| 503 | #define undo_queue (G.undo_queue )
|
|---|
| 504 | #define undo_queue_spos (G.undo_queue_spos )
|
|---|
| 505 | # endif
|
|---|
| 506 | #endif
|
|---|
| 507 |
|
|---|
| 508 | #define INIT_G() do { \
|
|---|
| 509 | SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \
|
|---|
| 510 | last_modified_count = -1; \
|
|---|
| 511 | /* "" but has space for 2 chars: */ \
|
|---|
| 512 | IF_FEATURE_VI_SEARCH(last_search_pattern = xzalloc(2);) \
|
|---|
| 513 | } while (0)
|
|---|
| 514 |
|
|---|
| 515 |
|
|---|
| 516 | static void edit_file(char *); // edit one file
|
|---|
| 517 | static void do_cmd(int); // execute a command
|
|---|
| 518 | static int next_tabstop(int);
|
|---|
| 519 | static void sync_cursor(char *, int *, int *); // synchronize the screen cursor to dot
|
|---|
| 520 | static char *begin_line(char *); // return pointer to cur line B-o-l
|
|---|
| 521 | static char *end_line(char *); // return pointer to cur line E-o-l
|
|---|
| 522 | static char *prev_line(char *); // return pointer to prev line B-o-l
|
|---|
| 523 | static char *next_line(char *); // return pointer to next line B-o-l
|
|---|
| 524 | static char *end_screen(void); // get pointer to last char on screen
|
|---|
| 525 | static int count_lines(char *, char *); // count line from start to stop
|
|---|
| 526 | static char *find_line(int); // find beginning of line #li
|
|---|
| 527 | static char *move_to_col(char *, int); // move "p" to column l
|
|---|
| 528 | static void dot_left(void); // move dot left- dont leave line
|
|---|
| 529 | static void dot_right(void); // move dot right- dont leave line
|
|---|
| 530 | static void dot_begin(void); // move dot to B-o-l
|
|---|
| 531 | static void dot_end(void); // move dot to E-o-l
|
|---|
| 532 | static void dot_next(void); // move dot to next line B-o-l
|
|---|
| 533 | static void dot_prev(void); // move dot to prev line B-o-l
|
|---|
| 534 | static void dot_scroll(int, int); // move the screen up or down
|
|---|
| 535 | static void dot_skip_over_ws(void); // move dot pat WS
|
|---|
| 536 | static char *bound_dot(char *); // make sure text[0] <= P < "end"
|
|---|
| 537 | static char *new_screen(int, int); // malloc virtual screen memory
|
|---|
| 538 | #if !ENABLE_FEATURE_VI_UNDO
|
|---|
| 539 | #define char_insert(a,b,c) char_insert(a,b)
|
|---|
| 540 | #endif
|
|---|
| 541 | static char *char_insert(char *, char, int); // insert the char c at 'p'
|
|---|
| 542 | // might reallocate text[]! use p += stupid_insert(p, ...),
|
|---|
| 543 | // and be careful to not use pointers into potentially freed text[]!
|
|---|
| 544 | static uintptr_t stupid_insert(char *, char); // stupidly insert the char c at 'p'
|
|---|
| 545 | static int find_range(char **, char **, char); // return pointers for an object
|
|---|
| 546 | static int st_test(char *, int, int, char *); // helper for skip_thing()
|
|---|
| 547 | static char *skip_thing(char *, int, int, int); // skip some object
|
|---|
| 548 | static char *find_pair(char *, const char); // find matching pair () [] {}
|
|---|
| 549 | #if !ENABLE_FEATURE_VI_UNDO
|
|---|
| 550 | #define text_hole_delete(a,b,c) text_hole_delete(a,b)
|
|---|
| 551 | #endif
|
|---|
| 552 | static char *text_hole_delete(char *, char *, int); // at "p", delete a 'size' byte hole
|
|---|
| 553 | // might reallocate text[]! use p += text_hole_make(p, ...),
|
|---|
| 554 | // and be careful to not use pointers into potentially freed text[]!
|
|---|
| 555 | static uintptr_t text_hole_make(char *, int); // at "p", make a 'size' byte hole
|
|---|
| 556 | #if !ENABLE_FEATURE_VI_UNDO
|
|---|
| 557 | #define yank_delete(a,b,c,d,e) yank_delete(a,b,c,d)
|
|---|
| 558 | #endif
|
|---|
| 559 | static char *yank_delete(char *, char *, int, int, int); // yank text[] into register then delete
|
|---|
| 560 | static void show_help(void); // display some help info
|
|---|
| 561 | static void rawmode(void); // set "raw" mode on tty
|
|---|
| 562 | static void cookmode(void); // return to "cooked" mode on tty
|
|---|
| 563 | // sleep for 'h' 1/100 seconds, return 1/0 if stdin is (ready for read)/(not ready)
|
|---|
| 564 | static int mysleep(int);
|
|---|
| 565 | static int readit(void); // read (maybe cursor) key from stdin
|
|---|
| 566 | static int get_one_char(void); // read 1 char from stdin
|
|---|
| 567 | // file_insert might reallocate text[]!
|
|---|
| 568 | static int file_insert(const char *, char *, int);
|
|---|
| 569 | static int file_write(char *, char *, char *);
|
|---|
| 570 | static void place_cursor(int, int);
|
|---|
| 571 | static void screen_erase(void);
|
|---|
| 572 | static void clear_to_eol(void);
|
|---|
| 573 | static void clear_to_eos(void);
|
|---|
| 574 | static void go_bottom_and_clear_to_eol(void);
|
|---|
| 575 | static void standout_start(void); // send "start reverse video" sequence
|
|---|
| 576 | static void standout_end(void); // send "end reverse video" sequence
|
|---|
| 577 | static void flash(int); // flash the terminal screen
|
|---|
| 578 | static void show_status_line(void); // put a message on the bottom line
|
|---|
| 579 | static void status_line(const char *, ...); // print to status buf
|
|---|
| 580 | static void status_line_bold(const char *, ...);
|
|---|
| 581 | static void status_line_bold_errno(const char *fn);
|
|---|
| 582 | static void not_implemented(const char *); // display "Not implemented" message
|
|---|
| 583 | static int format_edit_status(void); // format file status on status line
|
|---|
| 584 | static void redraw(int); // force a full screen refresh
|
|---|
| 585 | static char* format_line(char* /*, int*/);
|
|---|
| 586 | static void refresh(int); // update the terminal from screen[]
|
|---|
| 587 |
|
|---|
| 588 | static void indicate_error(void); // use flash or beep to indicate error
|
|---|
| 589 | static void Hit_Return(void);
|
|---|
| 590 |
|
|---|
| 591 | #if ENABLE_FEATURE_VI_SEARCH
|
|---|
| 592 | static char *char_search(char *, const char *, int, int); // search for pattern starting at p
|
|---|
| 593 | #endif
|
|---|
| 594 | #if ENABLE_FEATURE_VI_COLON
|
|---|
| 595 | static char *get_one_address(char *, int *); // get colon addr, if present
|
|---|
| 596 | static char *get_address(char *, int *, int *); // get two colon addrs, if present
|
|---|
| 597 | #endif
|
|---|
| 598 | static void colon(char *); // execute the "colon" mode cmds
|
|---|
| 599 | #if ENABLE_FEATURE_VI_USE_SIGNALS
|
|---|
| 600 | static void winch_sig(int); // catch window size changes
|
|---|
| 601 | static void suspend_sig(int); // catch ctrl-Z
|
|---|
| 602 | static void catch_sig(int); // catch ctrl-C and alarm time-outs
|
|---|
| 603 | #endif
|
|---|
| 604 | #if ENABLE_FEATURE_VI_DOT_CMD
|
|---|
| 605 | static void start_new_cmd_q(char); // new queue for command
|
|---|
| 606 | static void end_cmd_q(void); // stop saving input chars
|
|---|
| 607 | #else
|
|---|
| 608 | #define end_cmd_q() ((void)0)
|
|---|
| 609 | #endif
|
|---|
| 610 | #if ENABLE_FEATURE_VI_SETOPTS
|
|---|
| 611 | static void showmatching(char *); // show the matching pair () [] {}
|
|---|
| 612 | #endif
|
|---|
| 613 | #if ENABLE_FEATURE_VI_YANKMARK || (ENABLE_FEATURE_VI_COLON && ENABLE_FEATURE_VI_SEARCH) || ENABLE_FEATURE_VI_CRASHME
|
|---|
| 614 | // might reallocate text[]! use p += string_insert(p, ...),
|
|---|
| 615 | // and be careful to not use pointers into potentially freed text[]!
|
|---|
| 616 | # if !ENABLE_FEATURE_VI_UNDO
|
|---|
| 617 | #define string_insert(a,b,c) string_insert(a,b)
|
|---|
| 618 | # endif
|
|---|
| 619 | static uintptr_t string_insert(char *, const char *, int); // insert the string at 'p'
|
|---|
| 620 | #endif
|
|---|
| 621 | #if ENABLE_FEATURE_VI_YANKMARK
|
|---|
| 622 | static char *text_yank(char *, char *, int); // save copy of "p" into a register
|
|---|
| 623 | static char what_reg(void); // what is letter of current YDreg
|
|---|
| 624 | static void check_context(char); // remember context for '' command
|
|---|
| 625 | #endif
|
|---|
| 626 | #if ENABLE_FEATURE_VI_UNDO
|
|---|
| 627 | static void flush_undo_data(void);
|
|---|
| 628 | static void undo_push(char *, unsigned int, unsigned char); // Push an operation on the undo stack
|
|---|
| 629 | static void undo_pop(void); // Undo the last operation
|
|---|
| 630 | # if ENABLE_FEATURE_VI_UNDO_QUEUE
|
|---|
| 631 | static void undo_queue_commit(void); // Flush any queued objects to the undo stack
|
|---|
| 632 | # else
|
|---|
| 633 | # define undo_queue_commit() ((void)0)
|
|---|
| 634 | # endif
|
|---|
| 635 | #else
|
|---|
| 636 | #define flush_undo_data() ((void)0)
|
|---|
| 637 | #define undo_queue_commit() ((void)0)
|
|---|
| 638 | #endif
|
|---|
| 639 |
|
|---|
| 640 | #if ENABLE_FEATURE_VI_CRASHME
|
|---|
| 641 | static void crash_dummy();
|
|---|
| 642 | static void crash_test();
|
|---|
| 643 | static int crashme = 0;
|
|---|
| 644 | #endif
|
|---|
| 645 |
|
|---|
| 646 | #ifdef ENABLE_BASIC_MULTI_CHAR_CODE
|
|---|
| 647 | extern unsigned int Utf8_to_Utf16(const char *src, int *code_size);
|
|---|
| 648 | extern int bs_char_count(char *str, int pos);
|
|---|
| 649 | #endif
|
|---|
| 650 |
|
|---|
| 651 | static void write1(const char *out)
|
|---|
| 652 | {
|
|---|
| 653 | fputs(out, stdout);
|
|---|
| 654 | }
|
|---|
| 655 |
|
|---|
| 656 | int vi_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
|---|
| 657 | int vi_main(int argc, char **argv)
|
|---|
| 658 | {
|
|---|
| 659 | int c;
|
|---|
| 660 |
|
|---|
| 661 | INIT_G();
|
|---|
| 662 |
|
|---|
| 663 | #if ENABLE_FEATURE_VI_UNDO
|
|---|
| 664 | /* undo_stack_tail = NULL; - already is */
|
|---|
| 665 | #if ENABLE_FEATURE_VI_UNDO_QUEUE
|
|---|
| 666 | undo_queue_state = UNDO_EMPTY;
|
|---|
| 667 | /* undo_q = 0; - already is */
|
|---|
| 668 | #endif
|
|---|
| 669 | #endif
|
|---|
| 670 |
|
|---|
| 671 | #if ENABLE_FEATURE_VI_USE_SIGNALS || ENABLE_FEATURE_VI_CRASHME
|
|---|
| 672 | my_pid = getpid();
|
|---|
| 673 | #endif
|
|---|
| 674 | #if ENABLE_FEATURE_VI_CRASHME
|
|---|
| 675 | srand((long) my_pid);
|
|---|
| 676 | #endif
|
|---|
| 677 | #ifdef NO_SUCH_APPLET_YET
|
|---|
| 678 | /* If we aren't "vi", we are "view" */
|
|---|
| 679 | if (ENABLE_FEATURE_VI_READONLY && applet_name[2]) {
|
|---|
| 680 | SET_READONLY_MODE(readonly_mode);
|
|---|
| 681 | }
|
|---|
| 682 | #endif
|
|---|
| 683 |
|
|---|
| 684 | // autoindent is not default in vim 7.3
|
|---|
| 685 | vi_setops = /*VI_AUTOINDENT |*/ VI_SHOWMATCH | VI_IGNORECASE;
|
|---|
| 686 | // 1- process $HOME/.exrc file (not inplemented yet)
|
|---|
| 687 | // 2- process EXINIT variable from environment
|
|---|
| 688 | // 3- process command line args
|
|---|
| 689 | #if ENABLE_FEATURE_VI_COLON
|
|---|
| 690 | {
|
|---|
| 691 | char *p = getenv("EXINIT");
|
|---|
| 692 | if (p && *p)
|
|---|
| 693 | initial_cmds[0] = xstrndup(p, MAX_INPUT_LEN);
|
|---|
| 694 | }
|
|---|
| 695 | #endif
|
|---|
| 696 | while ((c = getopt(argc, argv, "hCRH" IF_FEATURE_VI_COLON("c:"))) != -1) {
|
|---|
| 697 | switch (c) {
|
|---|
| 698 | #if ENABLE_FEATURE_VI_CRASHME
|
|---|
| 699 | case 'C':
|
|---|
| 700 | crashme = 1;
|
|---|
| 701 | break;
|
|---|
| 702 | #endif
|
|---|
| 703 | #if ENABLE_FEATURE_VI_READONLY
|
|---|
| 704 | case 'R': // Read-only flag
|
|---|
| 705 | SET_READONLY_MODE(readonly_mode);
|
|---|
| 706 | break;
|
|---|
| 707 | #endif
|
|---|
| 708 | #if ENABLE_FEATURE_VI_COLON
|
|---|
| 709 | case 'c': // cmd line vi command
|
|---|
| 710 | if (*optarg)
|
|---|
| 711 | initial_cmds[initial_cmds[0] != NULL] = xstrndup(optarg, MAX_INPUT_LEN);
|
|---|
| 712 | break;
|
|---|
| 713 | #endif
|
|---|
| 714 | case 'H':
|
|---|
| 715 | show_help();
|
|---|
| 716 | /* fall through */
|
|---|
| 717 | default:
|
|---|
| 718 | bb_show_usage();
|
|---|
| 719 | return 1;
|
|---|
| 720 | }
|
|---|
| 721 | }
|
|---|
| 722 |
|
|---|
| 723 | // The argv array can be used by the ":next" and ":rewind" commands
|
|---|
| 724 | argv += optind;
|
|---|
| 725 | argc -= optind;
|
|---|
| 726 |
|
|---|
| 727 | //----- This is the main file handling loop --------------
|
|---|
| 728 | save_argc = argc;
|
|---|
| 729 | optind = 0;
|
|---|
| 730 | // "Save cursor, use alternate screen buffer, clear screen"
|
|---|
| 731 | write1("\033[?1049h");
|
|---|
| 732 | while (1) {
|
|---|
| 733 | edit_file(argv[optind]); /* param might be NULL */
|
|---|
| 734 | if (++optind >= argc)
|
|---|
| 735 | break;
|
|---|
| 736 | }
|
|---|
| 737 | // "Use normal screen buffer, restore cursor"
|
|---|
| 738 | write1("\033[?1049l");
|
|---|
| 739 | //-----------------------------------------------------------
|
|---|
| 740 |
|
|---|
| 741 | return 0;
|
|---|
| 742 | }
|
|---|
| 743 |
|
|---|
| 744 | /* read text from file or create an empty buf */
|
|---|
| 745 | /* will also update current_filename */
|
|---|
| 746 | static int init_text_buffer(char *fn)
|
|---|
| 747 | {
|
|---|
| 748 | int rc;
|
|---|
| 749 |
|
|---|
| 750 | flush_undo_data();
|
|---|
| 751 | modified_count = 0;
|
|---|
| 752 | last_modified_count = -1;
|
|---|
| 753 | #if ENABLE_FEATURE_VI_YANKMARK
|
|---|
| 754 | /* init the marks */
|
|---|
| 755 | memset(mark, 0, sizeof(mark));
|
|---|
| 756 | #endif
|
|---|
| 757 |
|
|---|
| 758 | /* allocate/reallocate text buffer */
|
|---|
| 759 | free(text);
|
|---|
| 760 | text_size = 10240;
|
|---|
| 761 | screenbegin = dot = end = text = xzalloc(text_size);
|
|---|
| 762 |
|
|---|
| 763 | if (fn != current_filename) {
|
|---|
| 764 | free(current_filename);
|
|---|
| 765 | current_filename = xstrdup(fn);
|
|---|
| 766 | }
|
|---|
| 767 | rc = file_insert(fn, text, 1);
|
|---|
| 768 | if (rc < 0) {
|
|---|
| 769 | // file doesnt exist. Start empty buf with dummy line
|
|---|
| 770 | char_insert(text, '\n', NO_UNDO);
|
|---|
| 771 | }
|
|---|
| 772 | return rc;
|
|---|
| 773 | }
|
|---|
| 774 |
|
|---|
| 775 | #if ENABLE_FEATURE_VI_WIN_RESIZE
|
|---|
| 776 | static int query_screen_dimensions(void)
|
|---|
| 777 | {
|
|---|
| 778 | int err = get_terminal_width_height(STDIN_FILENO, &columns, &rows);
|
|---|
| 779 | if (rows > MAX_SCR_ROWS)
|
|---|
| 780 | rows = MAX_SCR_ROWS;
|
|---|
| 781 | if (columns > MAX_SCR_COLS)
|
|---|
| 782 | columns = MAX_SCR_COLS;
|
|---|
| 783 | return err;
|
|---|
| 784 | }
|
|---|
| 785 | #else
|
|---|
| 786 | # define query_screen_dimensions() (0)
|
|---|
| 787 | #endif
|
|---|
| 788 |
|
|---|
| 789 | static void edit_file(char *fn)
|
|---|
| 790 | {
|
|---|
| 791 | #if ENABLE_FEATURE_VI_YANKMARK
|
|---|
| 792 | #define cur_line edit_file__cur_line
|
|---|
| 793 | #endif
|
|---|
| 794 | int c;
|
|---|
| 795 | #if ENABLE_FEATURE_VI_USE_SIGNALS
|
|---|
| 796 | int sig;
|
|---|
| 797 | #endif
|
|---|
| 798 |
|
|---|
| 799 | editing = 1; // 0 = exit, 1 = one file, 2 = multiple files
|
|---|
| 800 | rawmode();
|
|---|
| 801 | rows = 24;
|
|---|
| 802 | columns = 80;
|
|---|
| 803 | IF_FEATURE_VI_ASK_TERMINAL(G.get_rowcol_error =) query_screen_dimensions();
|
|---|
| 804 | #if ENABLE_FEATURE_VI_ASK_TERMINAL
|
|---|
| 805 | if (G.get_rowcol_error /* TODO? && no input on stdin */) {
|
|---|
| 806 | uint64_t k;
|
|---|
| 807 | write1("\033[999;999H" "\033[6n");
|
|---|
| 808 | fflush_all();
|
|---|
| 809 | k = read_key(STDIN_FILENO, readbuffer, /*timeout_ms:*/ 100);
|
|---|
| 810 | if ((int32_t)k == KEYCODE_CURSOR_POS) {
|
|---|
| 811 | uint32_t rc = (k >> 32);
|
|---|
| 812 | columns = (rc & 0x7fff);
|
|---|
| 813 | if (columns > MAX_SCR_COLS)
|
|---|
| 814 | columns = MAX_SCR_COLS;
|
|---|
| 815 | rows = ((rc >> 16) & 0x7fff);
|
|---|
| 816 | if (rows > MAX_SCR_ROWS)
|
|---|
| 817 | rows = MAX_SCR_ROWS;
|
|---|
| 818 | }
|
|---|
| 819 | }
|
|---|
| 820 | #endif
|
|---|
| 821 | new_screen(rows, columns); // get memory for virtual screen
|
|---|
| 822 | init_text_buffer(fn);
|
|---|
| 823 |
|
|---|
| 824 | #if ENABLE_FEATURE_VI_YANKMARK
|
|---|
| 825 | YDreg = 26; // default Yank/Delete reg
|
|---|
| 826 | Ureg = 27; // hold orig line for "U" cmd
|
|---|
| 827 | mark[26] = mark[27] = text; // init "previous context"
|
|---|
| 828 | #endif
|
|---|
| 829 |
|
|---|
| 830 | last_forward_char = last_input_char = '\0';
|
|---|
| 831 | crow = 0;
|
|---|
| 832 | ccol = 0;
|
|---|
| 833 |
|
|---|
| 834 | #if ENABLE_FEATURE_VI_USE_SIGNALS
|
|---|
| 835 | signal(SIGINT, catch_sig);
|
|---|
| 836 | signal(SIGWINCH, winch_sig);
|
|---|
| 837 | signal(SIGTSTP, suspend_sig);
|
|---|
| 838 | sig = sigsetjmp(restart, 1);
|
|---|
| 839 | if (sig != 0) {
|
|---|
| 840 | screenbegin = dot = text;
|
|---|
| 841 | }
|
|---|
| 842 | #endif
|
|---|
| 843 |
|
|---|
| 844 | cmd_mode = 0; // 0=command 1=insert 2='R'eplace
|
|---|
| 845 | cmdcnt = 0;
|
|---|
| 846 | tabstop = 8;
|
|---|
| 847 | offset = 0; // no horizontal offset
|
|---|
| 848 | c = '\0';
|
|---|
| 849 | #if ENABLE_FEATURE_VI_DOT_CMD
|
|---|
| 850 | free(ioq_start);
|
|---|
| 851 | ioq = ioq_start = NULL;
|
|---|
| 852 | lmc_len = 0;
|
|---|
| 853 | adding2q = 0;
|
|---|
| 854 | #endif
|
|---|
| 855 |
|
|---|
| 856 | #if ENABLE_FEATURE_VI_COLON
|
|---|
| 857 | {
|
|---|
| 858 | char *p, *q;
|
|---|
| 859 | int n = 0;
|
|---|
| 860 |
|
|---|
| 861 | while ((p = initial_cmds[n]) != NULL) {
|
|---|
| 862 | do {
|
|---|
| 863 | q = p;
|
|---|
| 864 | p = strchr(q, '\n');
|
|---|
| 865 | if (p)
|
|---|
| 866 | while (*p == '\n')
|
|---|
| 867 | *p++ = '\0';
|
|---|
| 868 | if (*q)
|
|---|
| 869 | colon(q);
|
|---|
| 870 | } while (p);
|
|---|
| 871 | free(initial_cmds[n]);
|
|---|
| 872 | initial_cmds[n] = NULL;
|
|---|
| 873 | n++;
|
|---|
| 874 | }
|
|---|
| 875 | }
|
|---|
| 876 | #endif
|
|---|
| 877 | redraw(FALSE); // dont force every col re-draw
|
|---|
| 878 | //------This is the main Vi cmd handling loop -----------------------
|
|---|
| 879 | while (editing > 0) {
|
|---|
| 880 | #if ENABLE_FEATURE_VI_CRASHME
|
|---|
| 881 | if (crashme > 0) {
|
|---|
| 882 | if ((end - text) > 1) {
|
|---|
| 883 | crash_dummy(); // generate a random command
|
|---|
| 884 | } else {
|
|---|
| 885 | crashme = 0;
|
|---|
| 886 | string_insert(text, "\n\n##### Ran out of text to work on. #####\n\n", NO_UNDO); // insert the string
|
|---|
| 887 | dot = text;
|
|---|
| 888 | refresh(FALSE);
|
|---|
| 889 | }
|
|---|
| 890 | }
|
|---|
| 891 | #endif
|
|---|
| 892 | last_input_char = c = get_one_char(); // get a cmd from user
|
|---|
| 893 | #if ENABLE_FEATURE_VI_YANKMARK
|
|---|
| 894 | // save a copy of the current line- for the 'U" command
|
|---|
| 895 | if (begin_line(dot) != cur_line) {
|
|---|
| 896 | cur_line = begin_line(dot);
|
|---|
| 897 | text_yank(begin_line(dot), end_line(dot), Ureg);
|
|---|
| 898 | }
|
|---|
| 899 | #endif
|
|---|
| 900 | #if ENABLE_FEATURE_VI_DOT_CMD
|
|---|
| 901 | // These are commands that change text[].
|
|---|
| 902 | // Remember the input for the "." command
|
|---|
| 903 | if (!adding2q && ioq_start == NULL
|
|---|
| 904 | && cmd_mode == 0 // command mode
|
|---|
| 905 | && c > '\0' // exclude NUL and non-ASCII chars
|
|---|
| 906 | && c < 0x7f // (Unicode and such)
|
|---|
| 907 | && strchr(modifying_cmds, c)
|
|---|
| 908 | ) {
|
|---|
| 909 | start_new_cmd_q(c);
|
|---|
| 910 | }
|
|---|
| 911 | #endif
|
|---|
| 912 | do_cmd(c); // execute the user command
|
|---|
| 913 |
|
|---|
| 914 | // poll to see if there is input already waiting. if we are
|
|---|
| 915 | // not able to display output fast enough to keep up, skip
|
|---|
| 916 | // the display update until we catch up with input.
|
|---|
| 917 | if (!readbuffer[0] && mysleep(0) == 0) {
|
|---|
| 918 | // no input pending - so update output
|
|---|
| 919 | refresh(FALSE);
|
|---|
| 920 | show_status_line();
|
|---|
| 921 | }
|
|---|
| 922 | #if ENABLE_FEATURE_VI_CRASHME
|
|---|
| 923 | if (crashme > 0)
|
|---|
| 924 | crash_test(); // test editor variables
|
|---|
| 925 | #endif
|
|---|
| 926 | }
|
|---|
| 927 | //-------------------------------------------------------------------
|
|---|
| 928 |
|
|---|
| 929 | go_bottom_and_clear_to_eol();
|
|---|
| 930 | cookmode();
|
|---|
| 931 | #undef cur_line
|
|---|
| 932 | }
|
|---|
| 933 |
|
|---|
| 934 | //----- The Colon commands -------------------------------------
|
|---|
| 935 | #if ENABLE_FEATURE_VI_COLON
|
|---|
| 936 | static char *get_one_address(char *p, int *addr) // get colon addr, if present
|
|---|
| 937 | {
|
|---|
| 938 | int st;
|
|---|
| 939 | char *q;
|
|---|
| 940 | IF_FEATURE_VI_YANKMARK(char c;)
|
|---|
| 941 | IF_FEATURE_VI_SEARCH(char *pat;)
|
|---|
| 942 |
|
|---|
| 943 | *addr = -1; // assume no addr
|
|---|
| 944 | if (*p == '.') { // the current line
|
|---|
| 945 | p++;
|
|---|
| 946 | q = begin_line(dot);
|
|---|
| 947 | *addr = count_lines(text, q);
|
|---|
| 948 | }
|
|---|
| 949 | #if ENABLE_FEATURE_VI_YANKMARK
|
|---|
| 950 | else if (*p == '\'') { // is this a mark addr
|
|---|
| 951 | p++;
|
|---|
| 952 | c = tolower(*p);
|
|---|
| 953 | p++;
|
|---|
| 954 | if (c >= 'a' && c <= 'z') {
|
|---|
| 955 | // we have a mark
|
|---|
| 956 | c = c - 'a';
|
|---|
| 957 | q = mark[(unsigned char) c];
|
|---|
| 958 | if (q != NULL) { // is mark valid
|
|---|
| 959 | *addr = count_lines(text, q);
|
|---|
| 960 | }
|
|---|
| 961 | }
|
|---|
| 962 | }
|
|---|
| 963 | #endif
|
|---|
| 964 | #if ENABLE_FEATURE_VI_SEARCH
|
|---|
| 965 | else if (*p == '/') { // a search pattern
|
|---|
| 966 | q = strchrnul(++p, '/');
|
|---|
| 967 | pat = xstrndup(p, q - p); // save copy of pattern
|
|---|
| 968 | p = q;
|
|---|
| 969 | if (*p == '/')
|
|---|
| 970 | p++;
|
|---|
| 971 | q = char_search(dot, pat, FORWARD, FULL);
|
|---|
| 972 | if (q != NULL) {
|
|---|
| 973 | *addr = count_lines(text, q);
|
|---|
| 974 | }
|
|---|
| 975 | free(pat);
|
|---|
| 976 | }
|
|---|
| 977 | #endif
|
|---|
| 978 | else if (*p == '$') { // the last line in file
|
|---|
| 979 | p++;
|
|---|
| 980 | q = begin_line(end - 1);
|
|---|
| 981 | *addr = count_lines(text, q);
|
|---|
| 982 | } else if (isdigit(*p)) { // specific line number
|
|---|
| 983 | sscanf(p, "%d%n", addr, &st);
|
|---|
| 984 | p += st;
|
|---|
| 985 | } else {
|
|---|
| 986 | // unrecognized address - assume -1
|
|---|
| 987 | *addr = -1;
|
|---|
| 988 | }
|
|---|
| 989 | return p;
|
|---|
| 990 | }
|
|---|
| 991 |
|
|---|
| 992 | static char *get_address(char *p, int *b, int *e) // get two colon addrs, if present
|
|---|
| 993 | {
|
|---|
| 994 | //----- get the address' i.e., 1,3 'a,'b -----
|
|---|
| 995 | // get FIRST addr, if present
|
|---|
| 996 | while (isblank(*p))
|
|---|
| 997 | p++; // skip over leading spaces
|
|---|
| 998 | if (*p == '%') { // alias for 1,$
|
|---|
| 999 | p++;
|
|---|
| 1000 | *b = 1;
|
|---|
| 1001 | *e = count_lines(text, end-1);
|
|---|
| 1002 | goto ga0;
|
|---|
| 1003 | }
|
|---|
| 1004 | p = get_one_address(p, b);
|
|---|
| 1005 | while (isblank(*p))
|
|---|
| 1006 | p++;
|
|---|
| 1007 | if (*p == ',') { // is there a address separator
|
|---|
| 1008 | p++;
|
|---|
| 1009 | while (isblank(*p))
|
|---|
| 1010 | p++;
|
|---|
| 1011 | // get SECOND addr, if present
|
|---|
| 1012 | p = get_one_address(p, e);
|
|---|
| 1013 | }
|
|---|
| 1014 | ga0:
|
|---|
| 1015 | while (isblank(*p))
|
|---|
| 1016 | p++; // skip over trailing spaces
|
|---|
| 1017 | return p;
|
|---|
| 1018 | }
|
|---|
| 1019 |
|
|---|
| 1020 | #if ENABLE_FEATURE_VI_SET && ENABLE_FEATURE_VI_SETOPTS
|
|---|
| 1021 | static void setops(const char *args, const char *opname, int flg_no,
|
|---|
| 1022 | const char *short_opname, int opt)
|
|---|
| 1023 | {
|
|---|
| 1024 | const char *a = args + flg_no;
|
|---|
| 1025 | int l = strlen(opname) - 1; /* opname have + ' ' */
|
|---|
| 1026 |
|
|---|
| 1027 | // maybe strncmp? we had tons of erroneous strncasecmp's...
|
|---|
| 1028 | if (strncasecmp(a, opname, l) == 0
|
|---|
| 1029 | || strncasecmp(a, short_opname, 2) == 0
|
|---|
| 1030 | ) {
|
|---|
| 1031 | if (flg_no)
|
|---|
| 1032 | vi_setops &= ~opt;
|
|---|
| 1033 | else
|
|---|
| 1034 | vi_setops |= opt;
|
|---|
| 1035 | }
|
|---|
| 1036 | }
|
|---|
| 1037 | #endif
|
|---|
| 1038 |
|
|---|
| 1039 | #endif /* FEATURE_VI_COLON */
|
|---|
| 1040 |
|
|---|
| 1041 | // buf must be no longer than MAX_INPUT_LEN!
|
|---|
| 1042 | static void colon(char *buf)
|
|---|
| 1043 | {
|
|---|
| 1044 | #if !ENABLE_FEATURE_VI_COLON
|
|---|
| 1045 | /* Simple ":cmd" handler with minimal set of commands */
|
|---|
| 1046 | char *p = buf;
|
|---|
| 1047 | int cnt;
|
|---|
| 1048 |
|
|---|
| 1049 | if (*p == ':')
|
|---|
| 1050 | p++;
|
|---|
| 1051 | cnt = strlen(p);
|
|---|
| 1052 | if (cnt == 0)
|
|---|
| 1053 | return;
|
|---|
| 1054 | if (strncmp(p, "quit", cnt) == 0
|
|---|
| 1055 | || strncmp(p, "q!", cnt) == 0
|
|---|
| 1056 | ) {
|
|---|
| 1057 | if (modified_count && p[1] != '!') {
|
|---|
| 1058 | status_line_bold("No write since last change (:%s! overrides)", p);
|
|---|
| 1059 | } else {
|
|---|
| 1060 | editing = 0;
|
|---|
| 1061 | }
|
|---|
| 1062 | return;
|
|---|
| 1063 | }
|
|---|
| 1064 | if (strncmp(p, "write", cnt) == 0
|
|---|
| 1065 | || strncmp(p, "wq", cnt) == 0
|
|---|
| 1066 | || strncmp(p, "wn", cnt) == 0
|
|---|
| 1067 | || (p[0] == 'x' && !p[1])
|
|---|
| 1068 | ) {
|
|---|
| 1069 | cnt = file_write(current_filename, text, end - 1);
|
|---|
| 1070 | if (cnt < 0) {
|
|---|
| 1071 | if (cnt == -1)
|
|---|
| 1072 | status_line_bold("Write error: %s", strerror(errno));
|
|---|
| 1073 | } else {
|
|---|
| 1074 | modified_count = 0;
|
|---|
| 1075 | last_modified_count = -1;
|
|---|
| 1076 | status_line("'%s' %dL, %dC",
|
|---|
| 1077 | current_filename,
|
|---|
| 1078 | count_lines(text, end - 1), cnt
|
|---|
| 1079 | );
|
|---|
| 1080 | if (p[0] == 'x' || p[1] == 'q' || p[1] == 'n'
|
|---|
| 1081 | || p[0] == 'X' || p[1] == 'Q' || p[1] == 'N'
|
|---|
| 1082 | ) {
|
|---|
| 1083 | editing = 0;
|
|---|
| 1084 | }
|
|---|
| 1085 | }
|
|---|
| 1086 | return;
|
|---|
| 1087 | }
|
|---|
| 1088 | if (strncmp(p, "file", cnt) == 0) {
|
|---|
| 1089 | last_status_cksum = 0; // force status update
|
|---|
| 1090 | return;
|
|---|
| 1091 | }
|
|---|
| 1092 | if (sscanf(p, "%d", &cnt) > 0) {
|
|---|
| 1093 | dot = find_line(cnt);
|
|---|
| 1094 | dot_skip_over_ws();
|
|---|
| 1095 | return;
|
|---|
| 1096 | }
|
|---|
| 1097 | not_implemented(p);
|
|---|
| 1098 | #else
|
|---|
| 1099 |
|
|---|
| 1100 | char c, *orig_buf, *buf1, *q, *r;
|
|---|
| 1101 | char *fn, cmd[MAX_INPUT_LEN], args[MAX_INPUT_LEN];
|
|---|
| 1102 | int i, l, li, b, e;
|
|---|
| 1103 | int useforce;
|
|---|
| 1104 |
|
|---|
| 1105 | // :3154 // if (-e line 3154) goto it else stay put
|
|---|
| 1106 | // :4,33w! foo // write a portion of buffer to file "foo"
|
|---|
| 1107 | // :w // write all of buffer to current file
|
|---|
| 1108 | // :q // quit
|
|---|
| 1109 | // :q! // quit- dont care about modified file
|
|---|
| 1110 | // :'a,'z!sort -u // filter block through sort
|
|---|
| 1111 | // :'f // goto mark "f"
|
|---|
| 1112 | // :'fl // list literal the mark "f" line
|
|---|
| 1113 | // :.r bar // read file "bar" into buffer before dot
|
|---|
| 1114 | // :/123/,/abc/d // delete lines from "123" line to "abc" line
|
|---|
| 1115 | // :/xyz/ // goto the "xyz" line
|
|---|
| 1116 | // :s/find/replace/ // substitute pattern "find" with "replace"
|
|---|
| 1117 | // :!<cmd> // run <cmd> then return
|
|---|
| 1118 | //
|
|---|
| 1119 |
|
|---|
| 1120 | if (!buf[0])
|
|---|
| 1121 | goto ret;
|
|---|
| 1122 | if (*buf == ':')
|
|---|
| 1123 | buf++; // move past the ':'
|
|---|
| 1124 |
|
|---|
| 1125 | li = i = 0;
|
|---|
| 1126 | b = e = -1;
|
|---|
| 1127 | q = text; // assume 1,$ for the range
|
|---|
| 1128 | r = end - 1;
|
|---|
| 1129 | li = count_lines(text, end - 1);
|
|---|
| 1130 | fn = current_filename;
|
|---|
| 1131 |
|
|---|
| 1132 | // look for optional address(es) :. :1 :1,9 :'q,'a :%
|
|---|
| 1133 | buf = get_address(buf, &b, &e);
|
|---|
| 1134 |
|
|---|
| 1135 | // remember orig command line
|
|---|
| 1136 | orig_buf = buf;
|
|---|
| 1137 |
|
|---|
| 1138 | // get the COMMAND into cmd[]
|
|---|
| 1139 | buf1 = cmd;
|
|---|
| 1140 | while (*buf != '\0') {
|
|---|
| 1141 | if (isspace(*buf))
|
|---|
| 1142 | break;
|
|---|
| 1143 | *buf1++ = *buf++;
|
|---|
| 1144 | }
|
|---|
| 1145 | *buf1 = '\0';
|
|---|
| 1146 | // get any ARGuments
|
|---|
| 1147 | while (isblank(*buf))
|
|---|
| 1148 | buf++;
|
|---|
| 1149 | strcpy(args, buf);
|
|---|
| 1150 | useforce = FALSE;
|
|---|
| 1151 | buf1 = last_char_is(cmd, '!');
|
|---|
| 1152 | if (buf1) {
|
|---|
| 1153 | useforce = TRUE;
|
|---|
| 1154 | *buf1 = '\0'; // get rid of !
|
|---|
| 1155 | }
|
|---|
| 1156 | if (b >= 0) {
|
|---|
| 1157 | // if there is only one addr, then the addr
|
|---|
| 1158 | // is the line number of the single line the
|
|---|
| 1159 | // user wants. So, reset the end
|
|---|
| 1160 | // pointer to point at end of the "b" line
|
|---|
| 1161 | q = find_line(b); // what line is #b
|
|---|
| 1162 | r = end_line(q);
|
|---|
| 1163 | li = 1;
|
|---|
| 1164 | }
|
|---|
| 1165 | if (e >= 0) {
|
|---|
| 1166 | // we were given two addrs. change the
|
|---|
| 1167 | // end pointer to the addr given by user.
|
|---|
| 1168 | r = find_line(e); // what line is #e
|
|---|
| 1169 | r = end_line(r);
|
|---|
| 1170 | li = e - b + 1;
|
|---|
| 1171 | }
|
|---|
| 1172 | // ------------ now look for the command ------------
|
|---|
| 1173 | i = strlen(cmd);
|
|---|
| 1174 | if (i == 0) { // :123CR goto line #123
|
|---|
| 1175 | if (b >= 0) {
|
|---|
| 1176 | dot = find_line(b); // what line is #b
|
|---|
| 1177 | dot_skip_over_ws();
|
|---|
| 1178 | }
|
|---|
| 1179 | }
|
|---|
| 1180 | #if ENABLE_FEATURE_ALLOW_EXEC
|
|---|
| 1181 | else if (cmd[0] == '!') { // run a cmd
|
|---|
| 1182 | int retcode;
|
|---|
| 1183 | // :!ls run the <cmd>
|
|---|
| 1184 | go_bottom_and_clear_to_eol();
|
|---|
| 1185 | cookmode();
|
|---|
| 1186 | retcode = system(orig_buf + 1); // run the cmd
|
|---|
| 1187 | if (retcode)
|
|---|
| 1188 | printf("\nshell returned %i\n\n", retcode);
|
|---|
| 1189 | rawmode();
|
|---|
| 1190 | Hit_Return(); // let user see results
|
|---|
| 1191 | }
|
|---|
| 1192 | #endif
|
|---|
| 1193 | else if (cmd[0] == '=' && !cmd[1]) { // where is the address
|
|---|
| 1194 | if (b < 0) { // no addr given- use defaults
|
|---|
| 1195 | b = e = count_lines(text, dot);
|
|---|
| 1196 | }
|
|---|
| 1197 | status_line("%d", b);
|
|---|
| 1198 | } else if (strncmp(cmd, "delete", i) == 0) { // delete lines
|
|---|
| 1199 | if (b < 0) { // no addr given- use defaults
|
|---|
| 1200 | q = begin_line(dot); // assume .,. for the range
|
|---|
| 1201 | r = end_line(dot);
|
|---|
| 1202 | }
|
|---|
| 1203 | dot = yank_delete(q, r, 1, YANKDEL, ALLOW_UNDO); // save, then delete lines
|
|---|
| 1204 | dot_skip_over_ws();
|
|---|
| 1205 | } else if (strncmp(cmd, "edit", i) == 0) { // Edit a file
|
|---|
| 1206 | int size;
|
|---|
| 1207 |
|
|---|
| 1208 | // don't edit, if the current file has been modified
|
|---|
| 1209 | if (modified_count && !useforce) {
|
|---|
| 1210 | status_line_bold("No write since last change (:%s! overrides)", cmd);
|
|---|
| 1211 | goto ret;
|
|---|
| 1212 | }
|
|---|
| 1213 | if (args[0]) {
|
|---|
| 1214 | // the user supplied a file name
|
|---|
| 1215 | fn = args;
|
|---|
| 1216 | } else if (current_filename && current_filename[0]) {
|
|---|
| 1217 | // no user supplied name- use the current filename
|
|---|
| 1218 | // fn = current_filename; was set by default
|
|---|
| 1219 | } else {
|
|---|
| 1220 | // no user file name, no current name- punt
|
|---|
| 1221 | status_line_bold("No current filename");
|
|---|
| 1222 | goto ret;
|
|---|
| 1223 | }
|
|---|
| 1224 |
|
|---|
| 1225 | size = init_text_buffer(fn);
|
|---|
| 1226 |
|
|---|
| 1227 | #if ENABLE_FEATURE_VI_YANKMARK
|
|---|
| 1228 | if (Ureg >= 0 && Ureg < 28) {
|
|---|
| 1229 | free(reg[Ureg]); // free orig line reg- for 'U'
|
|---|
| 1230 | reg[Ureg] = NULL;
|
|---|
| 1231 | }
|
|---|
| 1232 | if (YDreg >= 0 && YDreg < 28) {
|
|---|
| 1233 | free(reg[YDreg]); // free default yank/delete register
|
|---|
| 1234 | reg[YDreg] = NULL;
|
|---|
| 1235 | }
|
|---|
| 1236 | #endif
|
|---|
| 1237 | // how many lines in text[]?
|
|---|
| 1238 | li = count_lines(text, end - 1);
|
|---|
| 1239 | status_line("'%s'%s"
|
|---|
| 1240 | IF_FEATURE_VI_READONLY("%s")
|
|---|
| 1241 | " %dL, %dC",
|
|---|
| 1242 | current_filename,
|
|---|
| 1243 | (size < 0 ? " [New file]" : ""),
|
|---|
| 1244 | IF_FEATURE_VI_READONLY(
|
|---|
| 1245 | ((readonly_mode) ? " [Readonly]" : ""),
|
|---|
| 1246 | )
|
|---|
| 1247 | li, (int)(end - text)
|
|---|
| 1248 | );
|
|---|
| 1249 | } else if (strncmp(cmd, "file", i) == 0) { // what File is this
|
|---|
| 1250 | if (b != -1 || e != -1) {
|
|---|
| 1251 | status_line_bold("No address allowed on this command");
|
|---|
| 1252 | goto ret;
|
|---|
| 1253 | }
|
|---|
| 1254 | if (args[0]) {
|
|---|
| 1255 | // user wants a new filename
|
|---|
| 1256 | free(current_filename);
|
|---|
| 1257 | current_filename = xstrdup(args);
|
|---|
| 1258 | } else {
|
|---|
| 1259 | // user wants file status info
|
|---|
| 1260 | last_status_cksum = 0; // force status update
|
|---|
| 1261 | }
|
|---|
| 1262 | } else if (strncmp(cmd, "features", i) == 0) { // what features are available
|
|---|
| 1263 | // print out values of all features
|
|---|
| 1264 | go_bottom_and_clear_to_eol();
|
|---|
| 1265 | cookmode();
|
|---|
| 1266 | show_help();
|
|---|
| 1267 | rawmode();
|
|---|
| 1268 | Hit_Return();
|
|---|
| 1269 | } else if (strncmp(cmd, "list", i) == 0) { // literal print line
|
|---|
| 1270 | if (b < 0) { // no addr given- use defaults
|
|---|
| 1271 | q = begin_line(dot); // assume .,. for the range
|
|---|
| 1272 | r = end_line(dot);
|
|---|
| 1273 | }
|
|---|
| 1274 | go_bottom_and_clear_to_eol();
|
|---|
| 1275 | puts("\r");
|
|---|
| 1276 | for (; q <= r; q++) {
|
|---|
| 1277 | int c_is_no_print;
|
|---|
| 1278 |
|
|---|
| 1279 | c = *q;
|
|---|
| 1280 | c_is_no_print = (c & 0x80) && !Isprint(c);
|
|---|
| 1281 | if (c_is_no_print) {
|
|---|
| 1282 | c = '.';
|
|---|
| 1283 | standout_start();
|
|---|
| 1284 | }
|
|---|
| 1285 | if (c == '\n') {
|
|---|
| 1286 | write1("$\r");
|
|---|
| 1287 | } else if (c < ' ' || c == 127) {
|
|---|
| 1288 | bb_putchar('^');
|
|---|
| 1289 | if (c == 127)
|
|---|
| 1290 | c = '?';
|
|---|
| 1291 | else
|
|---|
| 1292 | c += '@';
|
|---|
| 1293 | }
|
|---|
| 1294 | bb_putchar(c);
|
|---|
| 1295 | if (c_is_no_print)
|
|---|
| 1296 | standout_end();
|
|---|
| 1297 | }
|
|---|
| 1298 | Hit_Return();
|
|---|
| 1299 | } else if (strncmp(cmd, "quit", i) == 0 // quit
|
|---|
| 1300 | || strncmp(cmd, "next", i) == 0 // edit next file
|
|---|
| 1301 | || strncmp(cmd, "prev", i) == 0 // edit previous file
|
|---|
| 1302 | ) {
|
|---|
| 1303 | int n;
|
|---|
| 1304 | if (useforce) {
|
|---|
| 1305 | if (*cmd == 'q') {
|
|---|
| 1306 | // force end of argv list
|
|---|
| 1307 | optind = save_argc;
|
|---|
| 1308 | }
|
|---|
| 1309 | editing = 0;
|
|---|
| 1310 | goto ret;
|
|---|
| 1311 | }
|
|---|
| 1312 | // don't exit if the file been modified
|
|---|
| 1313 | if (modified_count) {
|
|---|
| 1314 | status_line_bold("No write since last change (:%s! overrides)", cmd);
|
|---|
| 1315 | goto ret;
|
|---|
| 1316 | }
|
|---|
| 1317 | // are there other file to edit
|
|---|
| 1318 | n = save_argc - optind - 1;
|
|---|
| 1319 | if (*cmd == 'q' && n > 0) {
|
|---|
| 1320 | status_line_bold("%d more file(s) to edit", n);
|
|---|
| 1321 | goto ret;
|
|---|
| 1322 | }
|
|---|
| 1323 | if (*cmd == 'n' && n <= 0) {
|
|---|
| 1324 | status_line_bold("No more files to edit");
|
|---|
| 1325 | goto ret;
|
|---|
| 1326 | }
|
|---|
| 1327 | if (*cmd == 'p') {
|
|---|
| 1328 | // are there previous files to edit
|
|---|
| 1329 | if (optind < 1) {
|
|---|
| 1330 | status_line_bold("No previous files to edit");
|
|---|
| 1331 | goto ret;
|
|---|
| 1332 | }
|
|---|
| 1333 | optind -= 2;
|
|---|
| 1334 | }
|
|---|
| 1335 | editing = 0;
|
|---|
| 1336 | } else if (strncmp(cmd, "read", i) == 0) { // read file into text[]
|
|---|
| 1337 | int size;
|
|---|
| 1338 |
|
|---|
| 1339 | fn = args;
|
|---|
| 1340 | if (!fn[0]) {
|
|---|
| 1341 | status_line_bold("No filename given");
|
|---|
| 1342 | goto ret;
|
|---|
| 1343 | }
|
|---|
| 1344 | if (b < 0) { // no addr given- use defaults
|
|---|
| 1345 | q = begin_line(dot); // assume "dot"
|
|---|
| 1346 | }
|
|---|
| 1347 | // read after current line- unless user said ":0r foo"
|
|---|
| 1348 | if (b != 0) {
|
|---|
| 1349 | q = next_line(q);
|
|---|
| 1350 | // read after last line
|
|---|
| 1351 | if (q == end-1)
|
|---|
| 1352 | ++q;
|
|---|
| 1353 | }
|
|---|
| 1354 | { // dance around potentially-reallocated text[]
|
|---|
| 1355 | uintptr_t ofs = q - text;
|
|---|
| 1356 | size = file_insert(fn, q, 0);
|
|---|
| 1357 | q = text + ofs;
|
|---|
| 1358 | }
|
|---|
| 1359 | if (size < 0)
|
|---|
| 1360 | goto ret; // nothing was inserted
|
|---|
| 1361 | // how many lines in text[]?
|
|---|
| 1362 | li = count_lines(q, q + size - 1);
|
|---|
| 1363 | status_line("'%s'"
|
|---|
| 1364 | IF_FEATURE_VI_READONLY("%s")
|
|---|
| 1365 | " %dL, %dC",
|
|---|
| 1366 | fn,
|
|---|
| 1367 | IF_FEATURE_VI_READONLY((readonly_mode ? " [Readonly]" : ""),)
|
|---|
| 1368 | li, size
|
|---|
| 1369 | );
|
|---|
| 1370 | if (size > 0) {
|
|---|
| 1371 | // if the insert is before "dot" then we need to update
|
|---|
| 1372 | if (q <= dot)
|
|---|
| 1373 | dot += size;
|
|---|
| 1374 | }
|
|---|
| 1375 | } else if (strncmp(cmd, "rewind", i) == 0) { // rewind cmd line args
|
|---|
| 1376 | if (modified_count && !useforce) {
|
|---|
| 1377 | status_line_bold("No write since last change (:%s! overrides)", cmd);
|
|---|
| 1378 | } else {
|
|---|
| 1379 | // reset the filenames to edit
|
|---|
| 1380 | optind = -1; /* start from 0th file */
|
|---|
| 1381 | editing = 0;
|
|---|
| 1382 | }
|
|---|
| 1383 | #if ENABLE_FEATURE_VI_SET
|
|---|
| 1384 | } else if (strncmp(cmd, "set", i) == 0) { // set or clear features
|
|---|
| 1385 | #if ENABLE_FEATURE_VI_SETOPTS
|
|---|
| 1386 | char *argp;
|
|---|
| 1387 | #endif
|
|---|
| 1388 | i = 0; // offset into args
|
|---|
| 1389 | // only blank is regarded as args delimiter. What about tab '\t'?
|
|---|
| 1390 | if (!args[0] || strcasecmp(args, "all") == 0) {
|
|---|
| 1391 | // print out values of all options
|
|---|
| 1392 | #if ENABLE_FEATURE_VI_SETOPTS
|
|---|
| 1393 | status_line_bold(
|
|---|
| 1394 | "%sautoindent "
|
|---|
| 1395 | "%sflash "
|
|---|
| 1396 | "%signorecase "
|
|---|
| 1397 | "%sshowmatch "
|
|---|
| 1398 | "tabstop=%u",
|
|---|
| 1399 | autoindent ? "" : "no",
|
|---|
| 1400 | err_method ? "" : "no",
|
|---|
| 1401 | ignorecase ? "" : "no",
|
|---|
| 1402 | showmatch ? "" : "no",
|
|---|
| 1403 | tabstop
|
|---|
| 1404 | );
|
|---|
| 1405 | #endif
|
|---|
| 1406 | goto ret;
|
|---|
| 1407 | }
|
|---|
| 1408 | #if ENABLE_FEATURE_VI_SETOPTS
|
|---|
| 1409 | argp = args;
|
|---|
| 1410 | while (*argp) {
|
|---|
| 1411 | if (strncmp(argp, "no", 2) == 0)
|
|---|
| 1412 | i = 2; // ":set noautoindent"
|
|---|
| 1413 | setops(argp, "autoindent ", i, "ai", VI_AUTOINDENT);
|
|---|
| 1414 | setops(argp, "flash " , i, "fl", VI_ERR_METHOD);
|
|---|
| 1415 | setops(argp, "ignorecase ", i, "ic", VI_IGNORECASE);
|
|---|
| 1416 | setops(argp, "showmatch " , i, "sm", VI_SHOWMATCH );
|
|---|
| 1417 | if (strncmp(argp + i, "tabstop=", 8) == 0) {
|
|---|
| 1418 | int t = 0;
|
|---|
| 1419 | sscanf(argp + i+8, "%u", &t);
|
|---|
| 1420 | if (t > 0 && t <= MAX_TABSTOP)
|
|---|
| 1421 | tabstop = t;
|
|---|
| 1422 | }
|
|---|
| 1423 | argp = skip_non_whitespace(argp);
|
|---|
| 1424 | argp = skip_whitespace(argp);
|
|---|
| 1425 | }
|
|---|
| 1426 | #endif /* FEATURE_VI_SETOPTS */
|
|---|
| 1427 | #endif /* FEATURE_VI_SET */
|
|---|
| 1428 | #if ENABLE_FEATURE_VI_SEARCH
|
|---|
| 1429 | } else if (cmd[0] == 's') { // substitute a pattern with a replacement pattern
|
|---|
| 1430 | char *F, *R, *flags;
|
|---|
| 1431 | size_t len_F, len_R;
|
|---|
| 1432 | int gflag; // global replace flag
|
|---|
| 1433 | #if ENABLE_FEATURE_VI_UNDO
|
|---|
| 1434 | int dont_chain_first_item = ALLOW_UNDO;
|
|---|
| 1435 | #endif
|
|---|
| 1436 |
|
|---|
| 1437 | // F points to the "find" pattern
|
|---|
| 1438 | // R points to the "replace" pattern
|
|---|
| 1439 | // replace the cmd line delimiters "/" with NULs
|
|---|
| 1440 | c = orig_buf[1]; // what is the delimiter
|
|---|
| 1441 | F = orig_buf + 2; // start of "find"
|
|---|
| 1442 | R = strchr(F, c); // middle delimiter
|
|---|
| 1443 | if (!R)
|
|---|
| 1444 | goto colon_s_fail;
|
|---|
| 1445 | len_F = R - F;
|
|---|
| 1446 | *R++ = '\0'; // terminate "find"
|
|---|
| 1447 | flags = strchr(R, c);
|
|---|
| 1448 | if (!flags)
|
|---|
| 1449 | goto colon_s_fail;
|
|---|
| 1450 | len_R = flags - R;
|
|---|
| 1451 | *flags++ = '\0'; // terminate "replace"
|
|---|
| 1452 | gflag = *flags;
|
|---|
| 1453 |
|
|---|
| 1454 | q = begin_line(q);
|
|---|
| 1455 | if (b < 0) { // maybe :s/foo/bar/
|
|---|
| 1456 | q = begin_line(dot); // start with cur line
|
|---|
| 1457 | b = count_lines(text, q); // cur line number
|
|---|
| 1458 | }
|
|---|
| 1459 | if (e < 0)
|
|---|
| 1460 | e = b; // maybe :.s/foo/bar/
|
|---|
| 1461 |
|
|---|
| 1462 | for (i = b; i <= e; i++) { // so, :20,23 s \0 find \0 replace \0
|
|---|
| 1463 | char *ls = q; // orig line start
|
|---|
| 1464 | char *found;
|
|---|
| 1465 | vc4:
|
|---|
| 1466 | found = char_search(q, F, FORWARD, LIMITED); // search cur line only for "find"
|
|---|
| 1467 | if (found) {
|
|---|
| 1468 | uintptr_t bias;
|
|---|
| 1469 | // we found the "find" pattern - delete it
|
|---|
| 1470 | // For undo support, the first item should not be chained
|
|---|
| 1471 | text_hole_delete(found, found + len_F - 1, dont_chain_first_item);
|
|---|
| 1472 | #if ENABLE_FEATURE_VI_UNDO
|
|---|
| 1473 | dont_chain_first_item = ALLOW_UNDO_CHAIN;
|
|---|
| 1474 | #endif
|
|---|
| 1475 | // insert the "replace" patern
|
|---|
| 1476 | bias = string_insert(found, R, ALLOW_UNDO_CHAIN);
|
|---|
| 1477 | found += bias;
|
|---|
| 1478 | ls += bias;
|
|---|
| 1479 | /*q += bias; - recalculated anyway */
|
|---|
| 1480 | // check for "global" :s/foo/bar/g
|
|---|
| 1481 | if (gflag == 'g') {
|
|---|
| 1482 | if ((found + len_R) < end_line(ls)) {
|
|---|
| 1483 | q = found + len_R;
|
|---|
| 1484 | goto vc4; // don't let q move past cur line
|
|---|
| 1485 | }
|
|---|
| 1486 | }
|
|---|
| 1487 | }
|
|---|
| 1488 | q = next_line(ls);
|
|---|
| 1489 | }
|
|---|
| 1490 | #endif /* FEATURE_VI_SEARCH */
|
|---|
| 1491 | } else if (strncmp(cmd, "version", i) == 0) { // show software version
|
|---|
| 1492 | status_line(BB_VER " " BB_BT);
|
|---|
| 1493 | } else if (strncmp(cmd, "write", i) == 0 // write text to file
|
|---|
| 1494 | || strncmp(cmd, "wq", i) == 0
|
|---|
| 1495 | || strncmp(cmd, "wn", i) == 0
|
|---|
| 1496 | || (cmd[0] == 'x' && !cmd[1])
|
|---|
| 1497 | ) {
|
|---|
| 1498 | int size;
|
|---|
| 1499 | //int forced = FALSE;
|
|---|
| 1500 |
|
|---|
| 1501 | // is there a file name to write to?
|
|---|
| 1502 | if (args[0]) {
|
|---|
| 1503 | fn = args;
|
|---|
| 1504 | }
|
|---|
| 1505 | #if ENABLE_FEATURE_VI_READONLY
|
|---|
| 1506 | if (readonly_mode && !useforce) {
|
|---|
| 1507 | status_line_bold("'%s' is read only", fn);
|
|---|
| 1508 | goto ret;
|
|---|
| 1509 | }
|
|---|
| 1510 | #endif
|
|---|
| 1511 | // how many lines in text[]?
|
|---|
| 1512 | li = count_lines(q, r);
|
|---|
| 1513 | size = r - q + 1;
|
|---|
| 1514 | //if (useforce) {
|
|---|
| 1515 | // if "fn" is not write-able, chmod u+w
|
|---|
| 1516 | // sprintf(syscmd, "chmod u+w %s", fn);
|
|---|
| 1517 | // system(syscmd);
|
|---|
| 1518 | // forced = TRUE;
|
|---|
| 1519 | //}
|
|---|
| 1520 | l = file_write(fn, q, r);
|
|---|
| 1521 | //if (useforce && forced) {
|
|---|
| 1522 | // chmod u-w
|
|---|
| 1523 | // sprintf(syscmd, "chmod u-w %s", fn);
|
|---|
| 1524 | // system(syscmd);
|
|---|
| 1525 | // forced = FALSE;
|
|---|
| 1526 | //}
|
|---|
| 1527 | if (l < 0) {
|
|---|
| 1528 | if (l == -1)
|
|---|
| 1529 | status_line_bold_errno(fn);
|
|---|
| 1530 | } else {
|
|---|
| 1531 | status_line("'%s' %dL, %dC", fn, li, l);
|
|---|
| 1532 | if (q == text && r == end - 1 && l == size) {
|
|---|
| 1533 | modified_count = 0;
|
|---|
| 1534 | last_modified_count = -1;
|
|---|
| 1535 | }
|
|---|
| 1536 | if ((cmd[0] == 'x' || cmd[1] == 'q' || cmd[1] == 'n'
|
|---|
| 1537 | || cmd[0] == 'X' || cmd[1] == 'Q' || cmd[1] == 'N'
|
|---|
| 1538 | )
|
|---|
| 1539 | && l == size
|
|---|
| 1540 | ) {
|
|---|
| 1541 | editing = 0;
|
|---|
| 1542 | }
|
|---|
| 1543 | }
|
|---|
| 1544 | #if ENABLE_FEATURE_VI_YANKMARK
|
|---|
| 1545 | } else if (strncmp(cmd, "yank", i) == 0) { // yank lines
|
|---|
| 1546 | if (b < 0) { // no addr given- use defaults
|
|---|
| 1547 | q = begin_line(dot); // assume .,. for the range
|
|---|
| 1548 | r = end_line(dot);
|
|---|
| 1549 | }
|
|---|
| 1550 | text_yank(q, r, YDreg);
|
|---|
| 1551 | li = count_lines(q, r);
|
|---|
| 1552 | status_line("Yank %d lines (%d chars) into [%c]",
|
|---|
| 1553 | li, strlen(reg[YDreg]), what_reg());
|
|---|
| 1554 | #endif
|
|---|
| 1555 | } else {
|
|---|
| 1556 | // cmd unknown
|
|---|
| 1557 | not_implemented(cmd);
|
|---|
| 1558 | }
|
|---|
| 1559 | ret:
|
|---|
| 1560 | dot = bound_dot(dot); // make sure "dot" is valid
|
|---|
| 1561 | return;
|
|---|
| 1562 | #if ENABLE_FEATURE_VI_SEARCH
|
|---|
| 1563 | colon_s_fail:
|
|---|
| 1564 | status_line(":s expression missing delimiters");
|
|---|
| 1565 | #endif
|
|---|
| 1566 | #endif /* FEATURE_VI_COLON */
|
|---|
| 1567 | }
|
|---|
| 1568 |
|
|---|
| 1569 | static void Hit_Return(void)
|
|---|
| 1570 | {
|
|---|
| 1571 | int c;
|
|---|
| 1572 |
|
|---|
| 1573 | standout_start();
|
|---|
| 1574 | write1("[Hit return to continue]");
|
|---|
| 1575 | standout_end();
|
|---|
| 1576 | while ((c = get_one_char()) != '\n' && c != '\r')
|
|---|
| 1577 | continue;
|
|---|
| 1578 | redraw(TRUE); // force redraw all
|
|---|
| 1579 | }
|
|---|
| 1580 |
|
|---|
| 1581 | static int next_tabstop(int col)
|
|---|
| 1582 | {
|
|---|
| 1583 | return col + ((tabstop - 1) - (col % tabstop));
|
|---|
| 1584 | }
|
|---|
| 1585 |
|
|---|
| 1586 | //----- Synchronize the cursor to Dot --------------------------
|
|---|
| 1587 | static NOINLINE void sync_cursor(char *d, int *row, int *col)
|
|---|
| 1588 | {
|
|---|
| 1589 | char *beg_cur; // begin and end of "d" line
|
|---|
| 1590 | char *tp;
|
|---|
| 1591 | int cnt, ro, co;
|
|---|
| 1592 |
|
|---|
| 1593 | beg_cur = begin_line(d); // first char of cur line
|
|---|
| 1594 |
|
|---|
| 1595 | if (beg_cur < screenbegin) {
|
|---|
| 1596 | // "d" is before top line on screen
|
|---|
| 1597 | // how many lines do we have to move
|
|---|
| 1598 | cnt = count_lines(beg_cur, screenbegin);
|
|---|
| 1599 | sc1:
|
|---|
| 1600 | screenbegin = beg_cur;
|
|---|
| 1601 | if (cnt > (rows - 1) / 2) {
|
|---|
| 1602 | // we moved too many lines. put "dot" in middle of screen
|
|---|
| 1603 | for (cnt = 0; cnt < (rows - 1) / 2; cnt++) {
|
|---|
| 1604 | screenbegin = prev_line(screenbegin);
|
|---|
| 1605 | }
|
|---|
| 1606 | }
|
|---|
| 1607 | } else {
|
|---|
| 1608 | char *end_scr; // begin and end of screen
|
|---|
| 1609 | end_scr = end_screen(); // last char of screen
|
|---|
| 1610 | if (beg_cur > end_scr) {
|
|---|
| 1611 | // "d" is after bottom line on screen
|
|---|
| 1612 | // how many lines do we have to move
|
|---|
| 1613 | cnt = count_lines(end_scr, beg_cur);
|
|---|
| 1614 | if (cnt > (rows - 1) / 2)
|
|---|
| 1615 | goto sc1; // too many lines
|
|---|
| 1616 | for (ro = 0; ro < cnt - 1; ro++) {
|
|---|
| 1617 | // move screen begin the same amount
|
|---|
| 1618 | screenbegin = next_line(screenbegin);
|
|---|
| 1619 | // now, move the end of screen
|
|---|
| 1620 | end_scr = next_line(end_scr);
|
|---|
| 1621 | end_scr = end_line(end_scr);
|
|---|
| 1622 | }
|
|---|
| 1623 | }
|
|---|
| 1624 | }
|
|---|
| 1625 | // "d" is on screen- find out which row
|
|---|
| 1626 | tp = screenbegin;
|
|---|
| 1627 | for (ro = 0; ro < rows - 1; ro++) { // drive "ro" to correct row
|
|---|
| 1628 | if (tp == beg_cur)
|
|---|
| 1629 | break;
|
|---|
| 1630 | tp = next_line(tp);
|
|---|
| 1631 | }
|
|---|
| 1632 |
|
|---|
| 1633 | // find out what col "d" is on
|
|---|
| 1634 | co = 0;
|
|---|
| 1635 | while (tp < d) { // drive "co" to correct column
|
|---|
| 1636 | if (*tp == '\n') //vda || *tp == '\0')
|
|---|
| 1637 | break;
|
|---|
| 1638 | if (*tp == '\t') {
|
|---|
| 1639 | // handle tabs like real vi
|
|---|
| 1640 | if (d == tp && cmd_mode) {
|
|---|
| 1641 | break;
|
|---|
| 1642 | }
|
|---|
| 1643 | co = next_tabstop(co);
|
|---|
| 1644 | } else if ((unsigned char)*tp < ' ' || *tp == 0x7f) {
|
|---|
| 1645 | co++; // display as ^X, use 2 columns
|
|---|
| 1646 | }
|
|---|
| 1647 | #ifndef ENABLE_BASIC_MULTI_CHAR_CODE
|
|---|
| 1648 | co++;
|
|---|
| 1649 | tp++;
|
|---|
| 1650 | #else
|
|---|
| 1651 | unsigned short tmp_code;
|
|---|
| 1652 | int code_size;
|
|---|
| 1653 | tmp_code = Utf8_to_Utf16(tp, &code_size);
|
|---|
| 1654 | co += (code_size > 1 ? 2 : code_size);
|
|---|
| 1655 | tp += code_size;
|
|---|
| 1656 | #endif
|
|---|
| 1657 | }
|
|---|
| 1658 |
|
|---|
| 1659 | // "co" is the column where "dot" is.
|
|---|
| 1660 | // The screen has "columns" columns.
|
|---|
| 1661 | // The currently displayed columns are 0+offset -- columns+ofset
|
|---|
| 1662 | // |-------------------------------------------------------------|
|
|---|
| 1663 | // ^ ^ ^
|
|---|
| 1664 | // offset | |------- columns ----------------|
|
|---|
| 1665 | //
|
|---|
| 1666 | // If "co" is already in this range then we do not have to adjust offset
|
|---|
| 1667 | // but, we do have to subtract the "offset" bias from "co".
|
|---|
| 1668 | // If "co" is outside this range then we have to change "offset".
|
|---|
| 1669 | // If the first char of a line is a tab the cursor will try to stay
|
|---|
| 1670 | // in column 7, but we have to set offset to 0.
|
|---|
| 1671 |
|
|---|
| 1672 | if (co < 0 + offset) {
|
|---|
| 1673 | offset = co;
|
|---|
| 1674 | }
|
|---|
| 1675 | if (co >= columns + offset) {
|
|---|
| 1676 | offset = co - columns + 1;
|
|---|
| 1677 | }
|
|---|
| 1678 | // if the first char of the line is a tab, and "dot" is sitting on it
|
|---|
| 1679 | // force offset to 0.
|
|---|
| 1680 | if (d == beg_cur && *d == '\t') {
|
|---|
| 1681 | offset = 0;
|
|---|
| 1682 | }
|
|---|
| 1683 | co -= offset;
|
|---|
| 1684 |
|
|---|
| 1685 | *row = ro;
|
|---|
| 1686 | *col = co;
|
|---|
| 1687 | }
|
|---|
| 1688 |
|
|---|
| 1689 | //----- Text Movement Routines ---------------------------------
|
|---|
| 1690 | static char *begin_line(char *p) // return pointer to first char cur line
|
|---|
| 1691 | {
|
|---|
| 1692 | if (p > text) {
|
|---|
| 1693 | p = memrchr(text, '\n', p - text);
|
|---|
| 1694 | if (!p)
|
|---|
| 1695 | return text;
|
|---|
| 1696 | return p + 1;
|
|---|
| 1697 | }
|
|---|
| 1698 | return p;
|
|---|
| 1699 | }
|
|---|
| 1700 |
|
|---|
| 1701 | static char *end_line(char *p) // return pointer to NL of cur line
|
|---|
| 1702 | {
|
|---|
| 1703 | if (p < end - 1) {
|
|---|
| 1704 | p = memchr(p, '\n', end - p - 1);
|
|---|
| 1705 | if (!p)
|
|---|
| 1706 | return end - 1;
|
|---|
| 1707 | }
|
|---|
| 1708 | return p;
|
|---|
| 1709 | }
|
|---|
| 1710 |
|
|---|
| 1711 | static char *dollar_line(char *p) // return pointer to just before NL line
|
|---|
| 1712 | {
|
|---|
| 1713 | p = end_line(p);
|
|---|
| 1714 | // Try to stay off of the Newline
|
|---|
| 1715 | if (*p == '\n' && (p - begin_line(p)) > 0)
|
|---|
| 1716 | p--;
|
|---|
| 1717 | return p;
|
|---|
| 1718 | }
|
|---|
| 1719 |
|
|---|
| 1720 | static char *prev_line(char *p) // return pointer first char prev line
|
|---|
| 1721 | {
|
|---|
| 1722 | p = begin_line(p); // goto beginning of cur line
|
|---|
| 1723 | if (p > text && p[-1] == '\n')
|
|---|
| 1724 | p--; // step to prev line
|
|---|
| 1725 | p = begin_line(p); // goto beginning of prev line
|
|---|
| 1726 | return p;
|
|---|
| 1727 | }
|
|---|
| 1728 |
|
|---|
| 1729 | static char *next_line(char *p) // return pointer first char next line
|
|---|
| 1730 | {
|
|---|
| 1731 | p = end_line(p);
|
|---|
| 1732 | if (p < end - 1 && *p == '\n')
|
|---|
| 1733 | p++; // step to next line
|
|---|
| 1734 | return p;
|
|---|
| 1735 | }
|
|---|
| 1736 |
|
|---|
| 1737 | //----- Text Information Routines ------------------------------
|
|---|
| 1738 | static char *end_screen(void)
|
|---|
| 1739 | {
|
|---|
| 1740 | char *q;
|
|---|
| 1741 | int cnt;
|
|---|
| 1742 |
|
|---|
| 1743 | // find new bottom line
|
|---|
| 1744 | q = screenbegin;
|
|---|
| 1745 | for (cnt = 0; cnt < rows - 2; cnt++)
|
|---|
| 1746 | q = next_line(q);
|
|---|
| 1747 | q = end_line(q);
|
|---|
| 1748 | return q;
|
|---|
| 1749 | }
|
|---|
| 1750 |
|
|---|
| 1751 | // count line from start to stop
|
|---|
| 1752 | static int count_lines(char *start, char *stop)
|
|---|
| 1753 | {
|
|---|
| 1754 | char *q;
|
|---|
| 1755 | int cnt;
|
|---|
| 1756 |
|
|---|
| 1757 | if (stop < start) { // start and stop are backwards- reverse them
|
|---|
| 1758 | q = start;
|
|---|
| 1759 | start = stop;
|
|---|
| 1760 | stop = q;
|
|---|
| 1761 | }
|
|---|
| 1762 | cnt = 0;
|
|---|
| 1763 | stop = end_line(stop);
|
|---|
| 1764 | while (start <= stop && start <= end - 1) {
|
|---|
| 1765 | start = end_line(start);
|
|---|
| 1766 | if (*start == '\n')
|
|---|
| 1767 | cnt++;
|
|---|
| 1768 | start++;
|
|---|
| 1769 | }
|
|---|
| 1770 | return cnt;
|
|---|
| 1771 | }
|
|---|
| 1772 |
|
|---|
| 1773 | static char *find_line(int li) // find beginning of line #li
|
|---|
| 1774 | {
|
|---|
| 1775 | char *q;
|
|---|
| 1776 |
|
|---|
| 1777 | for (q = text; li > 1; li--) {
|
|---|
| 1778 | q = next_line(q);
|
|---|
| 1779 | }
|
|---|
| 1780 | return q;
|
|---|
| 1781 | }
|
|---|
| 1782 |
|
|---|
| 1783 | //----- Dot Movement Routines ----------------------------------
|
|---|
| 1784 | static void dot_left(void)
|
|---|
| 1785 | {
|
|---|
| 1786 | undo_queue_commit();
|
|---|
| 1787 | if (dot > text && dot[-1] != '\n')
|
|---|
| 1788 | #ifndef ENABLE_BASIC_MULTI_CHAR_CODE
|
|---|
| 1789 | dot--;
|
|---|
| 1790 | #else
|
|---|
| 1791 | dot -= bs_char_count(text, dot - text - 1);
|
|---|
| 1792 | #endif
|
|---|
| 1793 | }
|
|---|
| 1794 |
|
|---|
| 1795 | static void dot_right(void)
|
|---|
| 1796 | {
|
|---|
| 1797 | undo_queue_commit();
|
|---|
| 1798 | if (dot < end - 1 && *dot != '\n')
|
|---|
| 1799 | #ifndef ENABLE_BASIC_MULTI_CHAR_CODE
|
|---|
| 1800 | dot++;
|
|---|
| 1801 | #else
|
|---|
| 1802 | {
|
|---|
| 1803 | int code_size;
|
|---|
| 1804 | unsigned short tmp_code = Utf8_to_Utf16(dot, &code_size);
|
|---|
| 1805 | if (dot[code_size - 1] != '\n')
|
|---|
| 1806 | dot += code_size;
|
|---|
| 1807 | }
|
|---|
| 1808 | #endif
|
|---|
| 1809 | }
|
|---|
| 1810 |
|
|---|
| 1811 | static void dot_begin(void)
|
|---|
| 1812 | {
|
|---|
| 1813 | undo_queue_commit();
|
|---|
| 1814 | dot = begin_line(dot); // return pointer to first char cur line
|
|---|
| 1815 | }
|
|---|
| 1816 |
|
|---|
| 1817 | static void dot_end(void)
|
|---|
| 1818 | {
|
|---|
| 1819 | undo_queue_commit();
|
|---|
| 1820 | dot = end_line(dot); // return pointer to last char cur line
|
|---|
| 1821 | }
|
|---|
| 1822 |
|
|---|
| 1823 | static char *move_to_col(char *p, int l)
|
|---|
| 1824 | {
|
|---|
| 1825 | int co;
|
|---|
| 1826 |
|
|---|
| 1827 | p = begin_line(p);
|
|---|
| 1828 | co = 0;
|
|---|
| 1829 | while (co < l && p < end) {
|
|---|
| 1830 | if (*p == '\n') //vda || *p == '\0')
|
|---|
| 1831 | break;
|
|---|
| 1832 | if (*p == '\t') {
|
|---|
| 1833 | co = next_tabstop(co);
|
|---|
| 1834 | }
|
|---|
| 1835 | #ifndef ENABLE_BASIC_MULTI_CHAR_CODE
|
|---|
| 1836 | else if (*p < ' ' || *p == 127) {
|
|---|
| 1837 | co++; // display as ^X, use 2 columns
|
|---|
| 1838 | }
|
|---|
| 1839 | co++;
|
|---|
| 1840 | p++;
|
|---|
| 1841 | #else
|
|---|
| 1842 | else {
|
|---|
| 1843 | int code_size, tmp_co;
|
|---|
| 1844 | char *tmp_p;
|
|---|
| 1845 | unsigned short tmp_code = Utf8_to_Utf16(p, &code_size);
|
|---|
| 1846 | tmp_co = co + (code_size > 1 ? 2 : 1);
|
|---|
| 1847 | if (tmp_co > l)
|
|---|
| 1848 | break;
|
|---|
| 1849 | else
|
|---|
| 1850 | co = tmp_co;
|
|---|
| 1851 | tmp_p = p + code_size;
|
|---|
| 1852 | if (tmp_p > end)
|
|---|
| 1853 | break;
|
|---|
| 1854 | else
|
|---|
| 1855 | p = tmp_p;
|
|---|
| 1856 | }
|
|---|
| 1857 | #endif
|
|---|
| 1858 | }
|
|---|
| 1859 | return p;
|
|---|
| 1860 | }
|
|---|
| 1861 |
|
|---|
| 1862 | static void dot_next(void)
|
|---|
| 1863 | {
|
|---|
| 1864 | undo_queue_commit();
|
|---|
| 1865 | dot = next_line(dot);
|
|---|
| 1866 | }
|
|---|
| 1867 |
|
|---|
| 1868 | static void dot_prev(void)
|
|---|
| 1869 | {
|
|---|
| 1870 | undo_queue_commit();
|
|---|
| 1871 | dot = prev_line(dot);
|
|---|
| 1872 | }
|
|---|
| 1873 |
|
|---|
| 1874 | static void dot_scroll(int cnt, int dir)
|
|---|
| 1875 | {
|
|---|
| 1876 | char *q;
|
|---|
| 1877 |
|
|---|
| 1878 | undo_queue_commit();
|
|---|
| 1879 | for (; cnt > 0; cnt--) {
|
|---|
| 1880 | if (dir < 0) {
|
|---|
| 1881 | // scroll Backwards
|
|---|
| 1882 | // ctrl-Y scroll up one line
|
|---|
| 1883 | screenbegin = prev_line(screenbegin);
|
|---|
| 1884 | } else {
|
|---|
| 1885 | // scroll Forwards
|
|---|
| 1886 | // ctrl-E scroll down one line
|
|---|
| 1887 | screenbegin = next_line(screenbegin);
|
|---|
| 1888 | }
|
|---|
| 1889 | }
|
|---|
| 1890 | // make sure "dot" stays on the screen so we dont scroll off
|
|---|
| 1891 | if (dot < screenbegin)
|
|---|
| 1892 | dot = screenbegin;
|
|---|
| 1893 | q = end_screen(); // find new bottom line
|
|---|
| 1894 | if (dot > q)
|
|---|
| 1895 | dot = begin_line(q); // is dot is below bottom line?
|
|---|
| 1896 | dot_skip_over_ws();
|
|---|
| 1897 | }
|
|---|
| 1898 |
|
|---|
| 1899 | static void dot_skip_over_ws(void)
|
|---|
| 1900 | {
|
|---|
| 1901 | // skip WS
|
|---|
| 1902 | while (isspace(*dot) && *dot != '\n' && dot < end - 1)
|
|---|
| 1903 | dot++;
|
|---|
| 1904 | }
|
|---|
| 1905 |
|
|---|
| 1906 | static char *bound_dot(char *p) // make sure text[0] <= P < "end"
|
|---|
| 1907 | {
|
|---|
| 1908 | if (p >= end && end > text) {
|
|---|
| 1909 | p = end - 1;
|
|---|
| 1910 | indicate_error();
|
|---|
| 1911 | }
|
|---|
| 1912 | if (p < text) {
|
|---|
| 1913 | p = text;
|
|---|
| 1914 | indicate_error();
|
|---|
| 1915 | }
|
|---|
| 1916 | return p;
|
|---|
| 1917 | }
|
|---|
| 1918 |
|
|---|
| 1919 | //----- Helper Utility Routines --------------------------------
|
|---|
| 1920 |
|
|---|
| 1921 | //----------------------------------------------------------------
|
|---|
| 1922 | //----- Char Routines --------------------------------------------
|
|---|
| 1923 | /* Chars that are part of a word-
|
|---|
| 1924 | * 0123456789_ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz
|
|---|
| 1925 | * Chars that are Not part of a word (stoppers)
|
|---|
| 1926 | * !"#$%&'()*+,-./:;<=>?@[\]^`{|}~
|
|---|
| 1927 | * Chars that are WhiteSpace
|
|---|
| 1928 | * TAB NEWLINE VT FF RETURN SPACE
|
|---|
| 1929 | * DO NOT COUNT NEWLINE AS WHITESPACE
|
|---|
| 1930 | */
|
|---|
| 1931 |
|
|---|
| 1932 | static char *new_screen(int ro, int co)
|
|---|
| 1933 | {
|
|---|
| 1934 | int li;
|
|---|
| 1935 |
|
|---|
| 1936 | free(screen);
|
|---|
| 1937 | screensize = ro * co + 8;
|
|---|
| 1938 | screen = xmalloc(screensize);
|
|---|
| 1939 | // initialize the new screen. assume this will be a empty file.
|
|---|
| 1940 | screen_erase();
|
|---|
| 1941 | // non-existent text[] lines start with a tilde (~).
|
|---|
| 1942 | for (li = 1; li < ro - 1; li++) {
|
|---|
| 1943 | screen[(li * co) + 0] = '~';
|
|---|
| 1944 | }
|
|---|
| 1945 | return screen;
|
|---|
| 1946 | }
|
|---|
| 1947 |
|
|---|
| 1948 | #if ENABLE_FEATURE_VI_SEARCH
|
|---|
| 1949 |
|
|---|
| 1950 | # if ENABLE_FEATURE_VI_REGEX_SEARCH
|
|---|
| 1951 |
|
|---|
| 1952 | // search for pattern starting at p
|
|---|
| 1953 | static char *char_search(char *p, const char *pat, int dir, int range)
|
|---|
| 1954 | {
|
|---|
| 1955 | struct re_pattern_buffer preg;
|
|---|
| 1956 | const char *err;
|
|---|
| 1957 | char *q;
|
|---|
| 1958 | int i;
|
|---|
| 1959 | int size;
|
|---|
| 1960 |
|
|---|
| 1961 | re_syntax_options = RE_SYNTAX_POSIX_EXTENDED;
|
|---|
| 1962 | if (ignorecase)
|
|---|
| 1963 | re_syntax_options = RE_SYNTAX_POSIX_EXTENDED | RE_ICASE;
|
|---|
| 1964 |
|
|---|
| 1965 | memset(&preg, 0, sizeof(preg));
|
|---|
| 1966 | err = re_compile_pattern(pat, strlen(pat), &preg);
|
|---|
| 1967 | if (err != NULL) {
|
|---|
| 1968 | status_line_bold("bad search pattern '%s': %s", pat, err);
|
|---|
| 1969 | return p;
|
|---|
| 1970 | }
|
|---|
| 1971 |
|
|---|
| 1972 | // assume a LIMITED forward search
|
|---|
| 1973 | q = end - 1;
|
|---|
| 1974 | if (dir == BACK)
|
|---|
| 1975 | q = text;
|
|---|
| 1976 | // RANGE could be negative if we are searching backwards
|
|---|
| 1977 | range = q - p;
|
|---|
| 1978 | q = p;
|
|---|
| 1979 | size = range;
|
|---|
| 1980 | if (range < 0) {
|
|---|
| 1981 | size = -size;
|
|---|
| 1982 | q = p - size;
|
|---|
| 1983 | if (q < text)
|
|---|
| 1984 | q = text;
|
|---|
| 1985 | }
|
|---|
| 1986 | // search for the compiled pattern, preg, in p[]
|
|---|
| 1987 | // range < 0: search backward
|
|---|
| 1988 | // range > 0: search forward
|
|---|
| 1989 | // 0 < start < size
|
|---|
| 1990 | // re_search() < 0: not found or error
|
|---|
| 1991 | // re_search() >= 0: index of found pattern
|
|---|
| 1992 | // struct pattern char int int int struct reg
|
|---|
| 1993 | // re_search(*pattern_buffer, *string, size, start, range, *regs)
|
|---|
| 1994 | i = re_search(&preg, q, size, /*start:*/ 0, range, /*struct re_registers*:*/ NULL);
|
|---|
| 1995 | regfree(&preg);
|
|---|
| 1996 | if (i < 0)
|
|---|
| 1997 | return NULL;
|
|---|
| 1998 | if (dir == FORWARD)
|
|---|
| 1999 | p = p + i;
|
|---|
| 2000 | else
|
|---|
| 2001 | p = p - i;
|
|---|
| 2002 | return p;
|
|---|
| 2003 | }
|
|---|
| 2004 |
|
|---|
| 2005 | # else
|
|---|
| 2006 |
|
|---|
| 2007 | # if ENABLE_FEATURE_VI_SETOPTS
|
|---|
| 2008 | static int mycmp(const char *s1, const char *s2, int len)
|
|---|
| 2009 | {
|
|---|
| 2010 | if (ignorecase) {
|
|---|
| 2011 | return strncasecmp(s1, s2, len);
|
|---|
| 2012 | }
|
|---|
| 2013 | return strncmp(s1, s2, len);
|
|---|
| 2014 | }
|
|---|
| 2015 | # else
|
|---|
| 2016 | # define mycmp strncmp
|
|---|
| 2017 | # endif
|
|---|
| 2018 |
|
|---|
| 2019 | static char *char_search(char *p, const char *pat, int dir, int range)
|
|---|
| 2020 | {
|
|---|
| 2021 | char *start, *stop;
|
|---|
| 2022 | int len;
|
|---|
| 2023 |
|
|---|
| 2024 | len = strlen(pat);
|
|---|
| 2025 | if (dir == FORWARD) {
|
|---|
| 2026 | stop = end - 1; // assume range is p..end-1
|
|---|
| 2027 | if (range == LIMITED)
|
|---|
| 2028 | stop = next_line(p); // range is to next line
|
|---|
| 2029 | for (start = p; start < stop; start++) {
|
|---|
| 2030 | if (mycmp(start, pat, len) == 0) {
|
|---|
| 2031 | return start;
|
|---|
| 2032 | }
|
|---|
| 2033 | }
|
|---|
| 2034 | } else if (dir == BACK) {
|
|---|
| 2035 | stop = text; // assume range is text..p
|
|---|
| 2036 | if (range == LIMITED)
|
|---|
| 2037 | stop = prev_line(p); // range is to prev line
|
|---|
| 2038 | for (start = p - len; start >= stop; start--) {
|
|---|
| 2039 | if (mycmp(start, pat, len) == 0) {
|
|---|
| 2040 | return start;
|
|---|
| 2041 | }
|
|---|
| 2042 | }
|
|---|
| 2043 | }
|
|---|
| 2044 | // pattern not found
|
|---|
| 2045 | return NULL;
|
|---|
| 2046 | }
|
|---|
| 2047 |
|
|---|
| 2048 | # endif
|
|---|
| 2049 |
|
|---|
| 2050 | #endif /* FEATURE_VI_SEARCH */
|
|---|
| 2051 |
|
|---|
| 2052 | static char *char_insert(char *p, char c, int undo) // insert the char c at 'p'
|
|---|
| 2053 | {
|
|---|
| 2054 | if (c == 22) { // Is this an ctrl-V?
|
|---|
| 2055 | p += stupid_insert(p, '^'); // use ^ to indicate literal next
|
|---|
| 2056 | refresh(FALSE); // show the ^
|
|---|
| 2057 | c = get_one_char();
|
|---|
| 2058 | *p = c;
|
|---|
| 2059 | #if ENABLE_FEATURE_VI_UNDO
|
|---|
| 2060 | switch (undo) {
|
|---|
| 2061 | case ALLOW_UNDO:
|
|---|
| 2062 | undo_push(p, 1, UNDO_INS);
|
|---|
| 2063 | break;
|
|---|
| 2064 | case ALLOW_UNDO_CHAIN:
|
|---|
| 2065 | undo_push(p, 1, UNDO_INS_CHAIN);
|
|---|
| 2066 | break;
|
|---|
| 2067 | # if ENABLE_FEATURE_VI_UNDO_QUEUE
|
|---|
| 2068 | case ALLOW_UNDO_QUEUED:
|
|---|
| 2069 | undo_push(p, 1, UNDO_INS_QUEUED);
|
|---|
| 2070 | break;
|
|---|
| 2071 | # endif
|
|---|
| 2072 | }
|
|---|
| 2073 | #else
|
|---|
| 2074 | modified_count++;
|
|---|
| 2075 | #endif /* ENABLE_FEATURE_VI_UNDO */
|
|---|
| 2076 | p++;
|
|---|
| 2077 | } else if (c == 27) { // Is this an ESC?
|
|---|
| 2078 | cmd_mode = 0;
|
|---|
| 2079 | undo_queue_commit();
|
|---|
| 2080 | cmdcnt = 0;
|
|---|
| 2081 | end_cmd_q(); // stop adding to q
|
|---|
| 2082 | last_status_cksum = 0; // force status update
|
|---|
| 2083 | if ((p[-1] != '\n') && (dot > text)) {
|
|---|
| 2084 | #ifndef ENABLE_BASIC_MULTI_CHAR_CODE
|
|---|
| 2085 | p--;
|
|---|
| 2086 | #else
|
|---|
| 2087 | p -= bs_char_count(text, (p - text - 1));
|
|---|
| 2088 | #endif
|
|---|
| 2089 | }
|
|---|
| 2090 | } else if (c == erase_char || c == 8 || c == 127) { // Is this a BS
|
|---|
| 2091 | if (p > text) {
|
|---|
| 2092 | p--;
|
|---|
| 2093 | p = text_hole_delete(p, p, ALLOW_UNDO_QUEUED); // shrink buffer 1 char
|
|---|
| 2094 | }
|
|---|
| 2095 | } else {
|
|---|
| 2096 | // insert a char into text[]
|
|---|
| 2097 | if (c == 13)
|
|---|
| 2098 | c = '\n'; // translate \r to \n
|
|---|
| 2099 | #if ENABLE_FEATURE_VI_UNDO
|
|---|
| 2100 | # if ENABLE_FEATURE_VI_UNDO_QUEUE
|
|---|
| 2101 | if (c == '\n')
|
|---|
| 2102 | undo_queue_commit();
|
|---|
| 2103 | # endif
|
|---|
| 2104 | switch (undo) {
|
|---|
| 2105 | case ALLOW_UNDO:
|
|---|
| 2106 | undo_push(p, 1, UNDO_INS);
|
|---|
| 2107 | break;
|
|---|
| 2108 | case ALLOW_UNDO_CHAIN:
|
|---|
| 2109 | undo_push(p, 1, UNDO_INS_CHAIN);
|
|---|
| 2110 | break;
|
|---|
| 2111 | # if ENABLE_FEATURE_VI_UNDO_QUEUE
|
|---|
| 2112 | case ALLOW_UNDO_QUEUED:
|
|---|
| 2113 | undo_push(p, 1, UNDO_INS_QUEUED);
|
|---|
| 2114 | break;
|
|---|
| 2115 | # endif
|
|---|
| 2116 | }
|
|---|
| 2117 | #else
|
|---|
| 2118 | modified_count++;
|
|---|
| 2119 | #endif /* ENABLE_FEATURE_VI_UNDO */
|
|---|
| 2120 | p += 1 + stupid_insert(p, c); // insert the char
|
|---|
| 2121 | #if ENABLE_FEATURE_VI_SETOPTS
|
|---|
| 2122 | if (showmatch && strchr(")]}", c) != NULL) {
|
|---|
| 2123 | showmatching(p - 1);
|
|---|
| 2124 | }
|
|---|
| 2125 | if (autoindent && c == '\n') { // auto indent the new line
|
|---|
| 2126 | char *q;
|
|---|
| 2127 | size_t len;
|
|---|
| 2128 | q = prev_line(p); // use prev line as template
|
|---|
| 2129 | len = strspn(q, " \t"); // space or tab
|
|---|
| 2130 | if (len) {
|
|---|
| 2131 | uintptr_t bias;
|
|---|
| 2132 | bias = text_hole_make(p, len);
|
|---|
| 2133 | p += bias;
|
|---|
| 2134 | q += bias;
|
|---|
| 2135 | #if ENABLE_FEATURE_VI_UNDO
|
|---|
| 2136 | undo_push(p, len, UNDO_INS);
|
|---|
| 2137 | #endif
|
|---|
| 2138 | memcpy(p, q, len);
|
|---|
| 2139 | p += len;
|
|---|
| 2140 | }
|
|---|
| 2141 | }
|
|---|
| 2142 | #endif
|
|---|
| 2143 | }
|
|---|
| 2144 | return p;
|
|---|
| 2145 | }
|
|---|
| 2146 |
|
|---|
| 2147 | // might reallocate text[]! use p += stupid_insert(p, ...),
|
|---|
| 2148 | // and be careful to not use pointers into potentially freed text[]!
|
|---|
| 2149 | static uintptr_t stupid_insert(char *p, char c) // stupidly insert the char c at 'p'
|
|---|
| 2150 | {
|
|---|
| 2151 | uintptr_t bias;
|
|---|
| 2152 | bias = text_hole_make(p, 1);
|
|---|
| 2153 | p += bias;
|
|---|
| 2154 | *p = c;
|
|---|
| 2155 | return bias;
|
|---|
| 2156 | }
|
|---|
| 2157 |
|
|---|
| 2158 | static int find_range(char **start, char **stop, char c)
|
|---|
| 2159 | {
|
|---|
| 2160 | char *save_dot, *p, *q, *t;
|
|---|
| 2161 | int cnt, multiline = 0;
|
|---|
| 2162 |
|
|---|
| 2163 | save_dot = dot;
|
|---|
| 2164 | p = q = dot;
|
|---|
| 2165 |
|
|---|
| 2166 | if (strchr("cdy><", c)) {
|
|---|
| 2167 | // these cmds operate on whole lines
|
|---|
| 2168 | p = q = begin_line(p);
|
|---|
| 2169 | for (cnt = 1; cnt < cmdcnt; cnt++) {
|
|---|
| 2170 | q = next_line(q);
|
|---|
| 2171 | }
|
|---|
| 2172 | q = end_line(q);
|
|---|
| 2173 | } else if (strchr("^%$0bBeEfth\b\177", c)) {
|
|---|
| 2174 | // These cmds operate on char positions
|
|---|
| 2175 | do_cmd(c); // execute movement cmd
|
|---|
| 2176 | q = dot;
|
|---|
| 2177 | } else if (strchr("wW", c)) {
|
|---|
| 2178 | do_cmd(c); // execute movement cmd
|
|---|
| 2179 | // if we are at the next word's first char
|
|---|
| 2180 | // step back one char
|
|---|
| 2181 | // but check the possibilities when it is true
|
|---|
| 2182 | if (dot > text && ((isspace(dot[-1]) && !isspace(dot[0]))
|
|---|
| 2183 | || (ispunct(dot[-1]) && !ispunct(dot[0]))
|
|---|
| 2184 | || (isalnum(dot[-1]) && !isalnum(dot[0]))))
|
|---|
| 2185 | dot--; // move back off of next word
|
|---|
| 2186 | if (dot > text && *dot == '\n')
|
|---|
| 2187 | dot--; // stay off NL
|
|---|
| 2188 | q = dot;
|
|---|
| 2189 | } else if (strchr("H-k{", c)) {
|
|---|
| 2190 | // these operate on multi-lines backwards
|
|---|
| 2191 | q = end_line(dot); // find NL
|
|---|
| 2192 | do_cmd(c); // execute movement cmd
|
|---|
| 2193 | dot_begin();
|
|---|
| 2194 | p = dot;
|
|---|
| 2195 | } else if (strchr("L+j}\r\n", c)) {
|
|---|
| 2196 | // these operate on multi-lines forwards
|
|---|
| 2197 | p = begin_line(dot);
|
|---|
| 2198 | do_cmd(c); // execute movement cmd
|
|---|
| 2199 | dot_end(); // find NL
|
|---|
| 2200 | q = dot;
|
|---|
| 2201 | } else {
|
|---|
| 2202 | // nothing -- this causes any other values of c to
|
|---|
| 2203 | // represent the one-character range under the
|
|---|
| 2204 | // cursor. this is correct for ' ' and 'l', but
|
|---|
| 2205 | // perhaps no others.
|
|---|
| 2206 | //
|
|---|
| 2207 | }
|
|---|
| 2208 | if (q < p) {
|
|---|
| 2209 | t = q;
|
|---|
| 2210 | q = p;
|
|---|
| 2211 | p = t;
|
|---|
| 2212 | }
|
|---|
| 2213 |
|
|---|
| 2214 | // backward char movements don't include start position
|
|---|
| 2215 | if (q > p && strchr("^0bBh\b\177", c)) q--;
|
|---|
| 2216 |
|
|---|
| 2217 | multiline = 0;
|
|---|
| 2218 | for (t = p; t <= q; t++) {
|
|---|
| 2219 | if (*t == '\n') {
|
|---|
| 2220 | multiline = 1;
|
|---|
| 2221 | break;
|
|---|
| 2222 | }
|
|---|
| 2223 | }
|
|---|
| 2224 |
|
|---|
| 2225 | *start = p;
|
|---|
| 2226 | *stop = q;
|
|---|
| 2227 | dot = save_dot;
|
|---|
| 2228 | return multiline;
|
|---|
| 2229 | }
|
|---|
| 2230 |
|
|---|
| 2231 | static int st_test(char *p, int type, int dir, char *tested)
|
|---|
| 2232 | {
|
|---|
| 2233 | char c, c0, ci;
|
|---|
| 2234 | int test, inc;
|
|---|
| 2235 |
|
|---|
| 2236 | inc = dir;
|
|---|
| 2237 | c = c0 = p[0];
|
|---|
| 2238 | ci = p[inc];
|
|---|
| 2239 | test = 0;
|
|---|
| 2240 |
|
|---|
| 2241 | if (type == S_BEFORE_WS) {
|
|---|
| 2242 | c = ci;
|
|---|
| 2243 | test = (!isspace(c) || c == '\n');
|
|---|
| 2244 | }
|
|---|
| 2245 | if (type == S_TO_WS) {
|
|---|
| 2246 | c = c0;
|
|---|
| 2247 | test = (!isspace(c) || c == '\n');
|
|---|
| 2248 | }
|
|---|
| 2249 | if (type == S_OVER_WS) {
|
|---|
| 2250 | c = c0;
|
|---|
| 2251 | test = isspace(c);
|
|---|
| 2252 | }
|
|---|
| 2253 | if (type == S_END_PUNCT) {
|
|---|
| 2254 | c = ci;
|
|---|
| 2255 | test = ispunct(c);
|
|---|
| 2256 | }
|
|---|
| 2257 | if (type == S_END_ALNUM) {
|
|---|
| 2258 | c = ci;
|
|---|
| 2259 | test = (isalnum(c) || c == '_');
|
|---|
| 2260 | }
|
|---|
| 2261 | *tested = c;
|
|---|
| 2262 | return test;
|
|---|
| 2263 | }
|
|---|
| 2264 |
|
|---|
| 2265 | static char *skip_thing(char *p, int linecnt, int dir, int type)
|
|---|
| 2266 | {
|
|---|
| 2267 | char c;
|
|---|
| 2268 |
|
|---|
| 2269 | while (st_test(p, type, dir, &c)) {
|
|---|
| 2270 | // make sure we limit search to correct number of lines
|
|---|
| 2271 | if (c == '\n' && --linecnt < 1)
|
|---|
| 2272 | break;
|
|---|
| 2273 | if (dir >= 0 && p >= end - 1)
|
|---|
| 2274 | break;
|
|---|
| 2275 | if (dir < 0 && p <= text)
|
|---|
| 2276 | break;
|
|---|
| 2277 | p += dir; // move to next char
|
|---|
| 2278 | }
|
|---|
| 2279 | return p;
|
|---|
| 2280 | }
|
|---|
| 2281 |
|
|---|
| 2282 | // find matching char of pair () [] {}
|
|---|
| 2283 | // will crash if c is not one of these
|
|---|
| 2284 | static char *find_pair(char *p, const char c)
|
|---|
| 2285 | {
|
|---|
| 2286 | const char *braces = "()[]{}";
|
|---|
| 2287 | char match;
|
|---|
| 2288 | int dir, level;
|
|---|
| 2289 |
|
|---|
| 2290 | dir = strchr(braces, c) - braces;
|
|---|
| 2291 | dir ^= 1;
|
|---|
| 2292 | match = braces[dir];
|
|---|
| 2293 | dir = ((dir & 1) << 1) - 1; /* 1 for ([{, -1 for )\} */
|
|---|
| 2294 |
|
|---|
| 2295 | // look for match, count levels of pairs (( ))
|
|---|
| 2296 | level = 1;
|
|---|
| 2297 | for (;;) {
|
|---|
| 2298 | p += dir;
|
|---|
| 2299 | if (p < text || p >= end)
|
|---|
| 2300 | return NULL;
|
|---|
| 2301 | if (*p == c)
|
|---|
| 2302 | level++; // increase pair levels
|
|---|
| 2303 | if (*p == match) {
|
|---|
| 2304 | level--; // reduce pair level
|
|---|
| 2305 | if (level == 0)
|
|---|
| 2306 | return p; // found matching pair
|
|---|
| 2307 | }
|
|---|
| 2308 | }
|
|---|
| 2309 | }
|
|---|
| 2310 |
|
|---|
| 2311 | #if ENABLE_FEATURE_VI_SETOPTS
|
|---|
| 2312 | // show the matching char of a pair, () [] {}
|
|---|
| 2313 | static void showmatching(char *p)
|
|---|
| 2314 | {
|
|---|
| 2315 | char *q, *save_dot;
|
|---|
| 2316 |
|
|---|
| 2317 | // we found half of a pair
|
|---|
| 2318 | q = find_pair(p, *p); // get loc of matching char
|
|---|
| 2319 | if (q == NULL) {
|
|---|
| 2320 | indicate_error(); // no matching char
|
|---|
| 2321 | } else {
|
|---|
| 2322 | // "q" now points to matching pair
|
|---|
| 2323 | save_dot = dot; // remember where we are
|
|---|
| 2324 | dot = q; // go to new loc
|
|---|
| 2325 | refresh(FALSE); // let the user see it
|
|---|
| 2326 | mysleep(40); // give user some time
|
|---|
| 2327 | dot = save_dot; // go back to old loc
|
|---|
| 2328 | refresh(FALSE);
|
|---|
| 2329 | }
|
|---|
| 2330 | }
|
|---|
| 2331 | #endif /* FEATURE_VI_SETOPTS */
|
|---|
| 2332 |
|
|---|
| 2333 | #if ENABLE_FEATURE_VI_UNDO
|
|---|
| 2334 | static void flush_undo_data(void)
|
|---|
| 2335 | {
|
|---|
| 2336 | struct undo_object *undo_entry;
|
|---|
| 2337 |
|
|---|
| 2338 | while (undo_stack_tail) {
|
|---|
| 2339 | undo_entry = undo_stack_tail;
|
|---|
| 2340 | undo_stack_tail = undo_entry->prev;
|
|---|
| 2341 | free(undo_entry);
|
|---|
| 2342 | }
|
|---|
| 2343 | }
|
|---|
| 2344 |
|
|---|
| 2345 | // Undo functions and hooks added by Jody Bruchon (jody@jodybruchon.com)
|
|---|
| 2346 | static void undo_push(char *src, unsigned int length, uint8_t u_type) // Add to the undo stack
|
|---|
| 2347 | {
|
|---|
| 2348 | struct undo_object *undo_entry;
|
|---|
| 2349 |
|
|---|
| 2350 | // "u_type" values
|
|---|
| 2351 | // UNDO_INS: insertion, undo will remove from buffer
|
|---|
| 2352 | // UNDO_DEL: deleted text, undo will restore to buffer
|
|---|
| 2353 | // UNDO_{INS,DEL}_CHAIN: Same as above but also calls undo_pop() when complete
|
|---|
| 2354 | // The CHAIN operations are for handling multiple operations that the user
|
|---|
| 2355 | // performs with a single action, i.e. REPLACE mode or find-and-replace commands
|
|---|
| 2356 | // UNDO_{INS,DEL}_QUEUED: If queuing feature is enabled, allow use of the queue
|
|---|
| 2357 | // for the INS/DEL operation. The raw values should be equal to the values of
|
|---|
| 2358 | // UNDO_{INS,DEL} ORed with UNDO_QUEUED_FLAG
|
|---|
| 2359 |
|
|---|
| 2360 | #if ENABLE_FEATURE_VI_UNDO_QUEUE
|
|---|
| 2361 | // This undo queuing functionality groups multiple character typing or backspaces
|
|---|
| 2362 | // into a single large undo object. This greatly reduces calls to malloc() for
|
|---|
| 2363 | // single-character operations while typing and has the side benefit of letting
|
|---|
| 2364 | // an undo operation remove chunks of text rather than a single character.
|
|---|
| 2365 | switch (u_type) {
|
|---|
| 2366 | case UNDO_EMPTY: // Just in case this ever happens...
|
|---|
| 2367 | return;
|
|---|
| 2368 | case UNDO_DEL_QUEUED:
|
|---|
| 2369 | if (length != 1)
|
|---|
| 2370 | return; // Only queue single characters
|
|---|
| 2371 | switch (undo_queue_state) {
|
|---|
| 2372 | case UNDO_EMPTY:
|
|---|
| 2373 | undo_queue_state = UNDO_DEL;
|
|---|
| 2374 | case UNDO_DEL:
|
|---|
| 2375 | undo_queue_spos = src;
|
|---|
| 2376 | undo_q++;
|
|---|
| 2377 | undo_queue[CONFIG_FEATURE_VI_UNDO_QUEUE_MAX - undo_q] = *src;
|
|---|
| 2378 | // If queue is full, dump it into an object
|
|---|
| 2379 | if (undo_q == CONFIG_FEATURE_VI_UNDO_QUEUE_MAX)
|
|---|
| 2380 | undo_queue_commit();
|
|---|
| 2381 | return;
|
|---|
| 2382 | case UNDO_INS:
|
|---|
| 2383 | // Switch from storing inserted text to deleted text
|
|---|
| 2384 | undo_queue_commit();
|
|---|
| 2385 | undo_push(src, length, UNDO_DEL_QUEUED);
|
|---|
| 2386 | return;
|
|---|
| 2387 | }
|
|---|
| 2388 | break;
|
|---|
| 2389 | case UNDO_INS_QUEUED:
|
|---|
| 2390 | if (length != 1)
|
|---|
| 2391 | return;
|
|---|
| 2392 | switch (undo_queue_state) {
|
|---|
| 2393 | case UNDO_EMPTY:
|
|---|
| 2394 | undo_queue_state = UNDO_INS;
|
|---|
| 2395 | undo_queue_spos = src;
|
|---|
| 2396 | case UNDO_INS:
|
|---|
| 2397 | undo_q++; // Don't need to save any data for insertions
|
|---|
| 2398 | if (undo_q == CONFIG_FEATURE_VI_UNDO_QUEUE_MAX)
|
|---|
| 2399 | undo_queue_commit();
|
|---|
| 2400 | return;
|
|---|
| 2401 | case UNDO_DEL:
|
|---|
| 2402 | // Switch from storing deleted text to inserted text
|
|---|
| 2403 | undo_queue_commit();
|
|---|
| 2404 | undo_push(src, length, UNDO_INS_QUEUED);
|
|---|
| 2405 | return;
|
|---|
| 2406 | }
|
|---|
| 2407 | break;
|
|---|
| 2408 | }
|
|---|
| 2409 | #else
|
|---|
| 2410 | // If undo queuing is disabled, ignore the queuing flag entirely
|
|---|
| 2411 | u_type = u_type & ~UNDO_QUEUED_FLAG;
|
|---|
| 2412 | #endif
|
|---|
| 2413 |
|
|---|
| 2414 | // Allocate a new undo object
|
|---|
| 2415 | if (u_type == UNDO_DEL || u_type == UNDO_DEL_CHAIN) {
|
|---|
| 2416 | // For UNDO_DEL objects, save deleted text
|
|---|
| 2417 | if ((src + length) == end)
|
|---|
| 2418 | length--;
|
|---|
| 2419 | // If this deletion empties text[], strip the newline. When the buffer becomes
|
|---|
| 2420 | // zero-length, a newline is added back, which requires this to compensate.
|
|---|
| 2421 | undo_entry = xzalloc(offsetof(struct undo_object, undo_text) + length);
|
|---|
| 2422 | memcpy(undo_entry->undo_text, src, length);
|
|---|
| 2423 | } else {
|
|---|
| 2424 | undo_entry = xzalloc(sizeof(*undo_entry));
|
|---|
| 2425 | }
|
|---|
| 2426 | undo_entry->length = length;
|
|---|
| 2427 | #if ENABLE_FEATURE_VI_UNDO_QUEUE
|
|---|
| 2428 | if ((u_type & UNDO_USE_SPOS) != 0) {
|
|---|
| 2429 | undo_entry->start = undo_queue_spos - text; // use start position from queue
|
|---|
| 2430 | } else {
|
|---|
| 2431 | undo_entry->start = src - text; // use offset from start of text buffer
|
|---|
| 2432 | }
|
|---|
| 2433 | u_type = (u_type & ~UNDO_USE_SPOS);
|
|---|
| 2434 | #else
|
|---|
| 2435 | undo_entry->start = src - text;
|
|---|
| 2436 | #endif
|
|---|
| 2437 | undo_entry->u_type = u_type;
|
|---|
| 2438 |
|
|---|
| 2439 | // Push it on undo stack
|
|---|
| 2440 | undo_entry->prev = undo_stack_tail;
|
|---|
| 2441 | undo_stack_tail = undo_entry;
|
|---|
| 2442 | modified_count++;
|
|---|
| 2443 | }
|
|---|
| 2444 |
|
|---|
| 2445 | static void undo_pop(void) // Undo the last operation
|
|---|
| 2446 | {
|
|---|
| 2447 | int repeat;
|
|---|
| 2448 | char *u_start, *u_end;
|
|---|
| 2449 | struct undo_object *undo_entry;
|
|---|
| 2450 |
|
|---|
| 2451 | // Commit pending undo queue before popping (should be unnecessary)
|
|---|
| 2452 | undo_queue_commit();
|
|---|
| 2453 |
|
|---|
| 2454 | undo_entry = undo_stack_tail;
|
|---|
| 2455 | // Check for an empty undo stack
|
|---|
| 2456 | if (!undo_entry) {
|
|---|
| 2457 | status_line("Already at oldest change");
|
|---|
| 2458 | return;
|
|---|
| 2459 | }
|
|---|
| 2460 |
|
|---|
| 2461 | switch (undo_entry->u_type) {
|
|---|
| 2462 | case UNDO_DEL:
|
|---|
| 2463 | case UNDO_DEL_CHAIN:
|
|---|
| 2464 | // make hole and put in text that was deleted; deallocate text
|
|---|
| 2465 | u_start = text + undo_entry->start;
|
|---|
| 2466 | text_hole_make(u_start, undo_entry->length);
|
|---|
| 2467 | memcpy(u_start, undo_entry->undo_text, undo_entry->length);
|
|---|
| 2468 | status_line("Undo [%d] %s %d chars at position %d",
|
|---|
| 2469 | modified_count, "restored",
|
|---|
| 2470 | undo_entry->length, undo_entry->start
|
|---|
| 2471 | );
|
|---|
| 2472 | break;
|
|---|
| 2473 | case UNDO_INS:
|
|---|
| 2474 | case UNDO_INS_CHAIN:
|
|---|
| 2475 | // delete what was inserted
|
|---|
| 2476 | u_start = undo_entry->start + text;
|
|---|
| 2477 | u_end = u_start - 1 + undo_entry->length;
|
|---|
| 2478 | text_hole_delete(u_start, u_end, NO_UNDO);
|
|---|
| 2479 | status_line("Undo [%d] %s %d chars at position %d",
|
|---|
| 2480 | modified_count, "deleted",
|
|---|
| 2481 | undo_entry->length, undo_entry->start
|
|---|
| 2482 | );
|
|---|
| 2483 | break;
|
|---|
| 2484 | }
|
|---|
| 2485 | repeat = 0;
|
|---|
| 2486 | switch (undo_entry->u_type) {
|
|---|
| 2487 | // If this is the end of a chain, lower modification count and refresh display
|
|---|
| 2488 | case UNDO_DEL:
|
|---|
| 2489 | case UNDO_INS:
|
|---|
| 2490 | dot = (text + undo_entry->start);
|
|---|
| 2491 | refresh(FALSE);
|
|---|
| 2492 | break;
|
|---|
| 2493 | case UNDO_DEL_CHAIN:
|
|---|
| 2494 | case UNDO_INS_CHAIN:
|
|---|
| 2495 | repeat = 1;
|
|---|
| 2496 | break;
|
|---|
| 2497 | }
|
|---|
| 2498 | // Deallocate the undo object we just processed
|
|---|
| 2499 | undo_stack_tail = undo_entry->prev;
|
|---|
| 2500 | free(undo_entry);
|
|---|
| 2501 | modified_count--;
|
|---|
| 2502 | // For chained operations, continue popping all the way down the chain.
|
|---|
| 2503 | if (repeat) {
|
|---|
| 2504 | undo_pop(); // Follow the undo chain if one exists
|
|---|
| 2505 | }
|
|---|
| 2506 | }
|
|---|
| 2507 |
|
|---|
| 2508 | #if ENABLE_FEATURE_VI_UNDO_QUEUE
|
|---|
| 2509 | static void undo_queue_commit(void) // Flush any queued objects to the undo stack
|
|---|
| 2510 | {
|
|---|
| 2511 | // Pushes the queue object onto the undo stack
|
|---|
| 2512 | if (undo_q > 0) {
|
|---|
| 2513 | // Deleted character undo events grow from the end
|
|---|
| 2514 | undo_push(undo_queue + CONFIG_FEATURE_VI_UNDO_QUEUE_MAX - undo_q,
|
|---|
| 2515 | undo_q,
|
|---|
| 2516 | (undo_queue_state | UNDO_USE_SPOS)
|
|---|
| 2517 | );
|
|---|
| 2518 | undo_queue_state = UNDO_EMPTY;
|
|---|
| 2519 | undo_q = 0;
|
|---|
| 2520 | }
|
|---|
| 2521 | }
|
|---|
| 2522 | #endif
|
|---|
| 2523 |
|
|---|
| 2524 | #endif /* ENABLE_FEATURE_VI_UNDO */
|
|---|
| 2525 |
|
|---|
| 2526 | // open a hole in text[]
|
|---|
| 2527 | // might reallocate text[]! use p += text_hole_make(p, ...),
|
|---|
| 2528 | // and be careful to not use pointers into potentially freed text[]!
|
|---|
| 2529 | static uintptr_t text_hole_make(char *p, int size) // at "p", make a 'size' byte hole
|
|---|
| 2530 | {
|
|---|
| 2531 | uintptr_t bias = 0;
|
|---|
| 2532 |
|
|---|
| 2533 | if (size <= 0)
|
|---|
| 2534 | return bias;
|
|---|
| 2535 | end += size; // adjust the new END
|
|---|
| 2536 | if (end >= (text + text_size)) {
|
|---|
| 2537 | char *new_text;
|
|---|
| 2538 | text_size += end - (text + text_size) + 10240;
|
|---|
| 2539 | new_text = xrealloc(text, text_size);
|
|---|
| 2540 | bias = (new_text - text);
|
|---|
| 2541 | screenbegin += bias;
|
|---|
| 2542 | dot += bias;
|
|---|
| 2543 | end += bias;
|
|---|
| 2544 | p += bias;
|
|---|
| 2545 | #if ENABLE_FEATURE_VI_YANKMARK
|
|---|
| 2546 | {
|
|---|
| 2547 | int i;
|
|---|
| 2548 | for (i = 0; i < ARRAY_SIZE(mark); i++)
|
|---|
| 2549 | if (mark[i])
|
|---|
| 2550 | mark[i] += bias;
|
|---|
| 2551 | }
|
|---|
| 2552 | #endif
|
|---|
| 2553 | text = new_text;
|
|---|
| 2554 | }
|
|---|
| 2555 | memmove(p + size, p, end - size - p);
|
|---|
| 2556 | memset(p, ' ', size); // clear new hole
|
|---|
| 2557 | return bias;
|
|---|
| 2558 | }
|
|---|
| 2559 |
|
|---|
| 2560 | // close a hole in text[]
|
|---|
| 2561 | // "undo" value indicates if this operation should be undo-able
|
|---|
| 2562 | static char *text_hole_delete(char *p, char *q, int undo) // delete "p" through "q", inclusive
|
|---|
| 2563 | {
|
|---|
| 2564 | char *src, *dest;
|
|---|
| 2565 | int cnt, hole_size;
|
|---|
| 2566 |
|
|---|
| 2567 | // move forwards, from beginning
|
|---|
| 2568 | // assume p <= q
|
|---|
| 2569 | #ifndef ENABLE_BASIC_MULTI_CHAR_CODE
|
|---|
| 2570 | src = q + 1;
|
|---|
| 2571 | dest = p;
|
|---|
| 2572 | if (q < p) { // they are backward- swap them
|
|---|
| 2573 | src = p + 1;
|
|---|
| 2574 | dest = q;
|
|---|
| 2575 | }
|
|---|
| 2576 | hole_size = q - p + 1;
|
|---|
| 2577 | #else
|
|---|
| 2578 | int code_size;
|
|---|
| 2579 | unsigned short tmp_code;
|
|---|
| 2580 | if (q < p) { // they are backward- swap them
|
|---|
| 2581 | tmp_code = Utf8_to_Utf16(p, &code_size);
|
|---|
| 2582 | src = p + code_size;
|
|---|
| 2583 | dest = q;
|
|---|
| 2584 | hole_size = p - q + code_size;
|
|---|
| 2585 | }
|
|---|
| 2586 | else {
|
|---|
| 2587 | if (q == (dot - 1)) { // BS
|
|---|
| 2588 | code_size = bs_char_count(text, (dot - text - 1));
|
|---|
| 2589 | src = q + 1;
|
|---|
| 2590 | dest = p - (code_size - 1);
|
|---|
| 2591 | }
|
|---|
| 2592 | else { // DEL
|
|---|
| 2593 | tmp_code = Utf8_to_Utf16(q, &code_size);
|
|---|
| 2594 | src = q + code_size;
|
|---|
| 2595 | dest = p;
|
|---|
| 2596 | }
|
|---|
| 2597 | hole_size = q - p + code_size;
|
|---|
| 2598 | }
|
|---|
| 2599 | #endif
|
|---|
| 2600 | cnt = end - src;
|
|---|
| 2601 | #if ENABLE_FEATURE_VI_UNDO
|
|---|
| 2602 | switch (undo) {
|
|---|
| 2603 | case NO_UNDO:
|
|---|
| 2604 | break;
|
|---|
| 2605 | case ALLOW_UNDO:
|
|---|
| 2606 | undo_push(p, hole_size, UNDO_DEL);
|
|---|
| 2607 | break;
|
|---|
| 2608 | case ALLOW_UNDO_CHAIN:
|
|---|
| 2609 | undo_push(p, hole_size, UNDO_DEL_CHAIN);
|
|---|
| 2610 | break;
|
|---|
| 2611 | # if ENABLE_FEATURE_VI_UNDO_QUEUE
|
|---|
| 2612 | case ALLOW_UNDO_QUEUED:
|
|---|
| 2613 | undo_push(p, hole_size, UNDO_DEL_QUEUED);
|
|---|
| 2614 | break;
|
|---|
| 2615 | # endif
|
|---|
| 2616 | }
|
|---|
| 2617 | modified_count--;
|
|---|
| 2618 | #endif
|
|---|
| 2619 | if (src < text || src > end)
|
|---|
| 2620 | goto thd0;
|
|---|
| 2621 | if (dest < text || dest >= end)
|
|---|
| 2622 | goto thd0;
|
|---|
| 2623 | modified_count++;
|
|---|
| 2624 | if (src >= end)
|
|---|
| 2625 | goto thd_atend; // just delete the end of the buffer
|
|---|
| 2626 | memmove(dest, src, cnt);
|
|---|
| 2627 | thd_atend:
|
|---|
| 2628 | end = end - hole_size; // adjust the new END
|
|---|
| 2629 | if (dest >= end)
|
|---|
| 2630 | dest = end - 1; // make sure dest in below end-1
|
|---|
| 2631 | if (end <= text)
|
|---|
| 2632 | dest = end = text; // keep pointers valid
|
|---|
| 2633 | thd0:
|
|---|
| 2634 | return dest;
|
|---|
| 2635 | }
|
|---|
| 2636 |
|
|---|
| 2637 | // copy text into register, then delete text.
|
|---|
| 2638 | // if dist <= 0, do not include, or go past, a NewLine
|
|---|
| 2639 | //
|
|---|
| 2640 | static char *yank_delete(char *start, char *stop, int dist, int yf, int undo)
|
|---|
| 2641 | {
|
|---|
| 2642 | char *p;
|
|---|
| 2643 |
|
|---|
| 2644 | // make sure start <= stop
|
|---|
| 2645 | if (start > stop) {
|
|---|
| 2646 | // they are backwards, reverse them
|
|---|
| 2647 | p = start;
|
|---|
| 2648 | start = stop;
|
|---|
| 2649 | stop = p;
|
|---|
| 2650 | }
|
|---|
| 2651 | if (dist <= 0) {
|
|---|
| 2652 | // we cannot cross NL boundaries
|
|---|
| 2653 | p = start;
|
|---|
| 2654 | if (*p == '\n')
|
|---|
| 2655 | return p;
|
|---|
| 2656 | // dont go past a NewLine
|
|---|
| 2657 | for (; p + 1 <= stop; p++) {
|
|---|
| 2658 | if (p[1] == '\n') {
|
|---|
| 2659 | stop = p; // "stop" just before NewLine
|
|---|
| 2660 | break;
|
|---|
| 2661 | }
|
|---|
| 2662 | }
|
|---|
| 2663 | }
|
|---|
| 2664 | p = start;
|
|---|
| 2665 | #if ENABLE_FEATURE_VI_YANKMARK
|
|---|
| 2666 | text_yank(start, stop, YDreg);
|
|---|
| 2667 | #endif
|
|---|
| 2668 | if (yf == YANKDEL) {
|
|---|
| 2669 | p = text_hole_delete(start, stop, undo);
|
|---|
| 2670 | } // delete lines
|
|---|
| 2671 | return p;
|
|---|
| 2672 | }
|
|---|
| 2673 |
|
|---|
| 2674 | static void show_help(void)
|
|---|
| 2675 | {
|
|---|
| 2676 | puts("These features are available:"
|
|---|
| 2677 | #if ENABLE_FEATURE_VI_SEARCH
|
|---|
| 2678 | "\n\tPattern searches with / and ?"
|
|---|
| 2679 | #endif
|
|---|
| 2680 | #if ENABLE_FEATURE_VI_DOT_CMD
|
|---|
| 2681 | "\n\tLast command repeat with ."
|
|---|
| 2682 | #endif
|
|---|
| 2683 | #if ENABLE_FEATURE_VI_YANKMARK
|
|---|
| 2684 | "\n\tLine marking with 'x"
|
|---|
| 2685 | "\n\tNamed buffers with \"x"
|
|---|
| 2686 | #endif
|
|---|
| 2687 | #if ENABLE_FEATURE_VI_READONLY
|
|---|
| 2688 | //not implemented: "\n\tReadonly if vi is called as \"view\""
|
|---|
| 2689 | //redundant: usage text says this too: "\n\tReadonly with -R command line arg"
|
|---|
| 2690 | #endif
|
|---|
| 2691 | #if ENABLE_FEATURE_VI_SET
|
|---|
| 2692 | "\n\tSome colon mode commands with :"
|
|---|
| 2693 | #endif
|
|---|
| 2694 | #if ENABLE_FEATURE_VI_SETOPTS
|
|---|
| 2695 | "\n\tSettable options with \":set\""
|
|---|
| 2696 | #endif
|
|---|
| 2697 | #if ENABLE_FEATURE_VI_USE_SIGNALS
|
|---|
| 2698 | "\n\tSignal catching- ^C"
|
|---|
| 2699 | "\n\tJob suspend and resume with ^Z"
|
|---|
| 2700 | #endif
|
|---|
| 2701 | #if ENABLE_FEATURE_VI_WIN_RESIZE
|
|---|
| 2702 | "\n\tAdapt to window re-sizes"
|
|---|
| 2703 | #endif
|
|---|
| 2704 | );
|
|---|
| 2705 | }
|
|---|
| 2706 |
|
|---|
| 2707 | #if ENABLE_FEATURE_VI_DOT_CMD
|
|---|
| 2708 | static void start_new_cmd_q(char c)
|
|---|
| 2709 | {
|
|---|
| 2710 | // get buffer for new cmd
|
|---|
| 2711 | // if there is a current cmd count put it in the buffer first
|
|---|
| 2712 | if (cmdcnt > 0) {
|
|---|
| 2713 | lmc_len = sprintf(last_modifying_cmd, "%d%c", cmdcnt, c);
|
|---|
| 2714 | } else { // just save char c onto queue
|
|---|
| 2715 | last_modifying_cmd[0] = c;
|
|---|
| 2716 | lmc_len = 1;
|
|---|
| 2717 | }
|
|---|
| 2718 | adding2q = 1;
|
|---|
| 2719 | }
|
|---|
| 2720 |
|
|---|
| 2721 | static void end_cmd_q(void)
|
|---|
| 2722 | {
|
|---|
| 2723 | #if ENABLE_FEATURE_VI_YANKMARK
|
|---|
| 2724 | YDreg = 26; // go back to default Yank/Delete reg
|
|---|
| 2725 | #endif
|
|---|
| 2726 | adding2q = 0;
|
|---|
| 2727 | }
|
|---|
| 2728 | #endif /* FEATURE_VI_DOT_CMD */
|
|---|
| 2729 |
|
|---|
| 2730 | #if ENABLE_FEATURE_VI_YANKMARK \
|
|---|
| 2731 | || (ENABLE_FEATURE_VI_COLON && ENABLE_FEATURE_VI_SEARCH) \
|
|---|
| 2732 | || ENABLE_FEATURE_VI_CRASHME
|
|---|
| 2733 | // might reallocate text[]! use p += string_insert(p, ...),
|
|---|
| 2734 | // and be careful to not use pointers into potentially freed text[]!
|
|---|
| 2735 | static uintptr_t string_insert(char *p, const char *s, int undo) // insert the string at 'p'
|
|---|
| 2736 | {
|
|---|
| 2737 | uintptr_t bias;
|
|---|
| 2738 | int i;
|
|---|
| 2739 |
|
|---|
| 2740 | i = strlen(s);
|
|---|
| 2741 | #if ENABLE_FEATURE_VI_UNDO
|
|---|
| 2742 | switch (undo) {
|
|---|
| 2743 | case ALLOW_UNDO:
|
|---|
| 2744 | undo_push(p, i, UNDO_INS);
|
|---|
| 2745 | break;
|
|---|
| 2746 | case ALLOW_UNDO_CHAIN:
|
|---|
| 2747 | undo_push(p, i, UNDO_INS_CHAIN);
|
|---|
| 2748 | break;
|
|---|
| 2749 | }
|
|---|
| 2750 | #endif
|
|---|
| 2751 | bias = text_hole_make(p, i);
|
|---|
| 2752 | p += bias;
|
|---|
| 2753 | memcpy(p, s, i);
|
|---|
| 2754 | #if ENABLE_FEATURE_VI_YANKMARK
|
|---|
| 2755 | {
|
|---|
| 2756 | int cnt;
|
|---|
| 2757 | for (cnt = 0; *s != '\0'; s++) {
|
|---|
| 2758 | if (*s == '\n')
|
|---|
| 2759 | cnt++;
|
|---|
| 2760 | }
|
|---|
| 2761 | status_line("Put %d lines (%d chars) from [%c]", cnt, i, what_reg());
|
|---|
| 2762 | }
|
|---|
| 2763 | #endif
|
|---|
| 2764 | return bias;
|
|---|
| 2765 | }
|
|---|
| 2766 | #endif
|
|---|
| 2767 |
|
|---|
| 2768 | #if ENABLE_FEATURE_VI_YANKMARK
|
|---|
| 2769 | static char *text_yank(char *p, char *q, int dest) // copy text into a register
|
|---|
| 2770 | {
|
|---|
| 2771 | int cnt = q - p;
|
|---|
| 2772 | if (cnt < 0) { // they are backwards- reverse them
|
|---|
| 2773 | p = q;
|
|---|
| 2774 | cnt = -cnt;
|
|---|
| 2775 | }
|
|---|
| 2776 | free(reg[dest]); // if already a yank register, free it
|
|---|
| 2777 | reg[dest] = xstrndup(p, cnt + 1);
|
|---|
| 2778 | return p;
|
|---|
| 2779 | }
|
|---|
| 2780 |
|
|---|
| 2781 | static char what_reg(void)
|
|---|
| 2782 | {
|
|---|
| 2783 | char c;
|
|---|
| 2784 |
|
|---|
| 2785 | c = 'D'; // default to D-reg
|
|---|
| 2786 | if (0 <= YDreg && YDreg <= 25)
|
|---|
| 2787 | c = 'a' + (char) YDreg;
|
|---|
| 2788 | if (YDreg == 26)
|
|---|
| 2789 | c = 'D';
|
|---|
| 2790 | if (YDreg == 27)
|
|---|
| 2791 | c = 'U';
|
|---|
| 2792 | return c;
|
|---|
| 2793 | }
|
|---|
| 2794 |
|
|---|
| 2795 | static void check_context(char cmd)
|
|---|
| 2796 | {
|
|---|
| 2797 | // A context is defined to be "modifying text"
|
|---|
| 2798 | // Any modifying command establishes a new context.
|
|---|
| 2799 |
|
|---|
| 2800 | if (dot < context_start || dot > context_end) {
|
|---|
| 2801 | if (strchr(modifying_cmds, cmd) != NULL) {
|
|---|
| 2802 | // we are trying to modify text[]- make this the current context
|
|---|
| 2803 | mark[27] = mark[26]; // move cur to prev
|
|---|
| 2804 | mark[26] = dot; // move local to cur
|
|---|
| 2805 | context_start = prev_line(prev_line(dot));
|
|---|
| 2806 | context_end = next_line(next_line(dot));
|
|---|
| 2807 | //loiter= start_loiter= now;
|
|---|
| 2808 | }
|
|---|
| 2809 | }
|
|---|
| 2810 | }
|
|---|
| 2811 |
|
|---|
| 2812 | static char *swap_context(char *p) // goto new context for '' command make this the current context
|
|---|
| 2813 | {
|
|---|
| 2814 | char *tmp;
|
|---|
| 2815 |
|
|---|
| 2816 | // the current context is in mark[26]
|
|---|
| 2817 | // the previous context is in mark[27]
|
|---|
| 2818 | // only swap context if other context is valid
|
|---|
| 2819 | if (text <= mark[27] && mark[27] <= end - 1) {
|
|---|
| 2820 | tmp = mark[27];
|
|---|
| 2821 | mark[27] = p;
|
|---|
| 2822 | mark[26] = p = tmp;
|
|---|
| 2823 | context_start = prev_line(prev_line(prev_line(p)));
|
|---|
| 2824 | context_end = next_line(next_line(next_line(p)));
|
|---|
| 2825 | }
|
|---|
| 2826 | return p;
|
|---|
| 2827 | }
|
|---|
| 2828 | #endif /* FEATURE_VI_YANKMARK */
|
|---|
| 2829 |
|
|---|
| 2830 | //----- Set terminal attributes --------------------------------
|
|---|
| 2831 | static void rawmode(void)
|
|---|
| 2832 | {
|
|---|
| 2833 | tcgetattr(0, &term_orig);
|
|---|
| 2834 | term_vi = term_orig;
|
|---|
| 2835 | term_vi.c_lflag &= (~ICANON & ~ECHO); // leave ISIG on - allow intr's
|
|---|
| 2836 | term_vi.c_iflag &= (~IXON & ~ICRNL);
|
|---|
| 2837 | term_vi.c_oflag &= (~ONLCR);
|
|---|
| 2838 | term_vi.c_cc[VMIN] = 1;
|
|---|
| 2839 | term_vi.c_cc[VTIME] = 0;
|
|---|
| 2840 | erase_char = term_vi.c_cc[VERASE];
|
|---|
| 2841 | tcsetattr_stdin_TCSANOW(&term_vi);
|
|---|
| 2842 | }
|
|---|
| 2843 |
|
|---|
| 2844 | static void cookmode(void)
|
|---|
| 2845 | {
|
|---|
| 2846 | fflush_all();
|
|---|
| 2847 | tcsetattr_stdin_TCSANOW(&term_orig);
|
|---|
| 2848 | }
|
|---|
| 2849 |
|
|---|
| 2850 | #if ENABLE_FEATURE_VI_USE_SIGNALS
|
|---|
| 2851 | //----- Come here when we get a window resize signal ---------
|
|---|
| 2852 | static void winch_sig(int sig UNUSED_PARAM)
|
|---|
| 2853 | {
|
|---|
| 2854 | int save_errno = errno;
|
|---|
| 2855 | // FIXME: do it in main loop!!!
|
|---|
| 2856 | signal(SIGWINCH, winch_sig);
|
|---|
| 2857 | query_screen_dimensions();
|
|---|
| 2858 | new_screen(rows, columns); // get memory for virtual screen
|
|---|
| 2859 | redraw(TRUE); // re-draw the screen
|
|---|
| 2860 | errno = save_errno;
|
|---|
| 2861 | }
|
|---|
| 2862 |
|
|---|
| 2863 | //----- Come here when we get a continue signal -------------------
|
|---|
| 2864 | static void cont_sig(int sig UNUSED_PARAM)
|
|---|
| 2865 | {
|
|---|
| 2866 | int save_errno = errno;
|
|---|
| 2867 | rawmode(); // terminal to "raw"
|
|---|
| 2868 | last_status_cksum = 0; // force status update
|
|---|
| 2869 | redraw(TRUE); // re-draw the screen
|
|---|
| 2870 |
|
|---|
| 2871 | signal(SIGTSTP, suspend_sig);
|
|---|
| 2872 | signal(SIGCONT, SIG_DFL);
|
|---|
| 2873 | //kill(my_pid, SIGCONT); // huh? why? we are already "continued"...
|
|---|
| 2874 | errno = save_errno;
|
|---|
| 2875 | }
|
|---|
| 2876 |
|
|---|
| 2877 | //----- Come here when we get a Suspend signal -------------------
|
|---|
| 2878 | static void suspend_sig(int sig UNUSED_PARAM)
|
|---|
| 2879 | {
|
|---|
| 2880 | int save_errno = errno;
|
|---|
| 2881 | go_bottom_and_clear_to_eol();
|
|---|
| 2882 | cookmode(); // terminal to "cooked"
|
|---|
| 2883 |
|
|---|
| 2884 | signal(SIGCONT, cont_sig);
|
|---|
| 2885 | signal(SIGTSTP, SIG_DFL);
|
|---|
| 2886 | kill(my_pid, SIGTSTP);
|
|---|
| 2887 | errno = save_errno;
|
|---|
| 2888 | }
|
|---|
| 2889 |
|
|---|
| 2890 | //----- Come here when we get a signal ---------------------------
|
|---|
| 2891 | static void catch_sig(int sig)
|
|---|
| 2892 | {
|
|---|
| 2893 | signal(SIGINT, catch_sig);
|
|---|
| 2894 | siglongjmp(restart, sig);
|
|---|
| 2895 | }
|
|---|
| 2896 | #endif /* FEATURE_VI_USE_SIGNALS */
|
|---|
| 2897 |
|
|---|
| 2898 | static int mysleep(int hund) // sleep for 'hund' 1/100 seconds or stdin ready
|
|---|
| 2899 | {
|
|---|
| 2900 | struct pollfd pfd[1];
|
|---|
| 2901 |
|
|---|
| 2902 | if (hund != 0)
|
|---|
| 2903 | fflush_all();
|
|---|
| 2904 |
|
|---|
| 2905 | pfd[0].fd = STDIN_FILENO;
|
|---|
| 2906 | pfd[0].events = POLLIN;
|
|---|
| 2907 | return safe_poll(pfd, 1, hund*10) > 0;
|
|---|
| 2908 | }
|
|---|
| 2909 |
|
|---|
| 2910 | //----- IO Routines --------------------------------------------
|
|---|
| 2911 | static int readit(void) // read (maybe cursor) key from stdin
|
|---|
| 2912 | {
|
|---|
| 2913 | int c;
|
|---|
| 2914 |
|
|---|
| 2915 | fflush_all();
|
|---|
| 2916 | c = read_key(STDIN_FILENO, readbuffer, /*timeout off:*/ -2);
|
|---|
| 2917 | if (c == -1) { // EOF/error
|
|---|
| 2918 | go_bottom_and_clear_to_eol();
|
|---|
| 2919 | cookmode(); // terminal to "cooked"
|
|---|
| 2920 | bb_error_msg_and_die("can't read user input");
|
|---|
| 2921 | }
|
|---|
| 2922 | return c;
|
|---|
| 2923 | }
|
|---|
| 2924 |
|
|---|
| 2925 | //----- IO Routines --------------------------------------------
|
|---|
| 2926 | static int get_one_char(void)
|
|---|
| 2927 | {
|
|---|
| 2928 | int c;
|
|---|
| 2929 |
|
|---|
| 2930 | #if ENABLE_FEATURE_VI_DOT_CMD
|
|---|
| 2931 | if (!adding2q) {
|
|---|
| 2932 | // we are not adding to the q.
|
|---|
| 2933 | // but, we may be reading from a q
|
|---|
| 2934 | if (ioq == 0) {
|
|---|
| 2935 | // there is no current q, read from STDIN
|
|---|
| 2936 | c = readit(); // get the users input
|
|---|
| 2937 | } else {
|
|---|
| 2938 | // there is a queue to get chars from first
|
|---|
| 2939 | // careful with correct sign expansion!
|
|---|
| 2940 | c = (unsigned char)*ioq++;
|
|---|
| 2941 | if (c == '\0') {
|
|---|
| 2942 | // the end of the q, read from STDIN
|
|---|
| 2943 | free(ioq_start);
|
|---|
| 2944 | ioq_start = ioq = 0;
|
|---|
| 2945 | c = readit(); // get the users input
|
|---|
| 2946 | }
|
|---|
| 2947 | }
|
|---|
| 2948 | } else {
|
|---|
| 2949 | // adding STDIN chars to q
|
|---|
| 2950 | c = readit(); // get the users input
|
|---|
| 2951 | if (lmc_len >= MAX_INPUT_LEN - 1) {
|
|---|
| 2952 | status_line_bold("last_modifying_cmd overrun");
|
|---|
| 2953 | } else {
|
|---|
| 2954 | // add new char to q
|
|---|
| 2955 | last_modifying_cmd[lmc_len++] = c;
|
|---|
| 2956 | }
|
|---|
| 2957 | }
|
|---|
| 2958 | #else
|
|---|
| 2959 | c = readit(); // get the users input
|
|---|
| 2960 | #endif /* FEATURE_VI_DOT_CMD */
|
|---|
| 2961 | return c;
|
|---|
| 2962 | }
|
|---|
| 2963 |
|
|---|
| 2964 | // Get input line (uses "status line" area)
|
|---|
| 2965 | static char *get_input_line(const char *prompt)
|
|---|
| 2966 | {
|
|---|
| 2967 | // char [MAX_INPUT_LEN]
|
|---|
| 2968 | #define buf get_input_line__buf
|
|---|
| 2969 |
|
|---|
| 2970 | int c;
|
|---|
| 2971 | int i;
|
|---|
| 2972 |
|
|---|
| 2973 | strcpy(buf, prompt);
|
|---|
| 2974 | last_status_cksum = 0; // force status update
|
|---|
| 2975 | go_bottom_and_clear_to_eol();
|
|---|
| 2976 | write1(prompt); // write out the :, /, or ? prompt
|
|---|
| 2977 |
|
|---|
| 2978 | i = strlen(buf);
|
|---|
| 2979 | while (i < MAX_INPUT_LEN) {
|
|---|
| 2980 | c = get_one_char();
|
|---|
| 2981 | if (c == '\n' || c == '\r' || c == 27)
|
|---|
| 2982 | break; // this is end of input
|
|---|
| 2983 | if (c == erase_char || c == 8 || c == 127) {
|
|---|
| 2984 | // user wants to erase prev char
|
|---|
| 2985 | buf[--i] = '\0';
|
|---|
| 2986 | write1("\b \b"); // erase char on screen
|
|---|
| 2987 | if (i <= 0) // user backs up before b-o-l, exit
|
|---|
| 2988 | break;
|
|---|
| 2989 | } else if (c > 0 && c < 256) { // exclude Unicode
|
|---|
| 2990 | // (TODO: need to handle Unicode)
|
|---|
| 2991 | buf[i] = c;
|
|---|
| 2992 | buf[++i] = '\0';
|
|---|
| 2993 | bb_putchar(c);
|
|---|
| 2994 | }
|
|---|
| 2995 | }
|
|---|
| 2996 | refresh(FALSE);
|
|---|
| 2997 | return buf;
|
|---|
| 2998 | #undef buf
|
|---|
| 2999 | }
|
|---|
| 3000 |
|
|---|
| 3001 | // might reallocate text[]!
|
|---|
| 3002 | static int file_insert(const char *fn, char *p, int initial)
|
|---|
| 3003 | {
|
|---|
| 3004 | int cnt = -1;
|
|---|
| 3005 | int fd, size;
|
|---|
| 3006 | struct stat statbuf;
|
|---|
| 3007 |
|
|---|
| 3008 | if (p < text)
|
|---|
| 3009 | p = text;
|
|---|
| 3010 | if (p > end)
|
|---|
| 3011 | p = end;
|
|---|
| 3012 |
|
|---|
| 3013 | fd = open(fn, O_RDONLY);
|
|---|
| 3014 | if (fd < 0) {
|
|---|
| 3015 | if (!initial)
|
|---|
| 3016 | status_line_bold_errno(fn);
|
|---|
| 3017 | return cnt;
|
|---|
| 3018 | }
|
|---|
| 3019 |
|
|---|
| 3020 | /* Validate file */
|
|---|
| 3021 | // if (fstat(fd, &statbuf) < 0) {
|
|---|
| 3022 | if (stat(fn, &statbuf) < 0) {
|
|---|
| 3023 | status_line_bold_errno(fn);
|
|---|
| 3024 | goto fi;
|
|---|
| 3025 | }
|
|---|
| 3026 | if (!S_ISREG(statbuf.st_mode)) {
|
|---|
| 3027 | status_line_bold("'%s' is not a regular file", fn);
|
|---|
| 3028 | goto fi;
|
|---|
| 3029 | }
|
|---|
| 3030 | size = (statbuf.st_size < INT_MAX ? (int)statbuf.st_size : INT_MAX);
|
|---|
| 3031 | p += text_hole_make(p, size);
|
|---|
| 3032 | cnt = full_read(fd, p, size);
|
|---|
| 3033 | if (cnt < 0) {
|
|---|
| 3034 | status_line_bold_errno(fn);
|
|---|
| 3035 | p = text_hole_delete(p, p + size - 1, NO_UNDO); // un-do buffer insert
|
|---|
| 3036 | } else if (cnt < size) {
|
|---|
| 3037 | // There was a partial read, shrink unused space
|
|---|
| 3038 | p = text_hole_delete(p + cnt, p + size - 1, NO_UNDO);
|
|---|
| 3039 | status_line_bold("can't read '%s'", fn);
|
|---|
| 3040 | }
|
|---|
| 3041 | fi:
|
|---|
| 3042 | close(fd);
|
|---|
| 3043 |
|
|---|
| 3044 | #if ENABLE_FEATURE_VI_READONLY
|
|---|
| 3045 | if (initial
|
|---|
| 3046 | && ((access(fn, W_OK) < 0) ||
|
|---|
| 3047 | /* root will always have access()
|
|---|
| 3048 | * so we check fileperms too */
|
|---|
| 3049 | !(statbuf.st_mode & (S_IWUSR | S_IWGRP | S_IWOTH))
|
|---|
| 3050 | )
|
|---|
| 3051 | ) {
|
|---|
| 3052 | SET_READONLY_FILE(readonly_mode);
|
|---|
| 3053 | }
|
|---|
| 3054 | #endif
|
|---|
| 3055 | return cnt;
|
|---|
| 3056 | }
|
|---|
| 3057 |
|
|---|
| 3058 | static int file_write(char *fn, char *first, char *last)
|
|---|
| 3059 | {
|
|---|
| 3060 | int fd, cnt, charcnt;
|
|---|
| 3061 |
|
|---|
| 3062 | if (fn == 0) {
|
|---|
| 3063 | status_line_bold("No current filename");
|
|---|
| 3064 | return -2;
|
|---|
| 3065 | }
|
|---|
| 3066 | /* By popular request we do not open file with O_TRUNC,
|
|---|
| 3067 | * but instead ftruncate() it _after_ successful write.
|
|---|
| 3068 | * Might reduce amount of data lost on power fail etc.
|
|---|
| 3069 | */
|
|---|
| 3070 | fd = open(fn, (O_WRONLY | O_CREAT), 0666);
|
|---|
| 3071 | if (fd < 0)
|
|---|
| 3072 | return -1;
|
|---|
| 3073 | cnt = last - first + 1;
|
|---|
| 3074 | charcnt = full_write(fd, first, cnt);
|
|---|
| 3075 | ftruncate(fd, charcnt);
|
|---|
| 3076 | if (charcnt == cnt) {
|
|---|
| 3077 | // good write
|
|---|
| 3078 | //modified_count = FALSE;
|
|---|
| 3079 | } else {
|
|---|
| 3080 | charcnt = 0;
|
|---|
| 3081 | }
|
|---|
| 3082 | close(fd);
|
|---|
| 3083 | return charcnt;
|
|---|
| 3084 | }
|
|---|
| 3085 |
|
|---|
| 3086 | //----- Terminal Drawing ---------------------------------------
|
|---|
| 3087 | // The terminal is made up of 'rows' line of 'columns' columns.
|
|---|
| 3088 | // classically this would be 24 x 80.
|
|---|
| 3089 | // screen coordinates
|
|---|
| 3090 | // 0,0 ... 0,79
|
|---|
| 3091 | // 1,0 ... 1,79
|
|---|
| 3092 | // . ... .
|
|---|
| 3093 | // . ... .
|
|---|
| 3094 | // 22,0 ... 22,79
|
|---|
| 3095 | // 23,0 ... 23,79 <- status line
|
|---|
| 3096 |
|
|---|
| 3097 | //----- Move the cursor to row x col (count from 0, not 1) -------
|
|---|
| 3098 | static void place_cursor(int row, int col)
|
|---|
| 3099 | {
|
|---|
| 3100 | char cm1[sizeof(ESC_SET_CURSOR_POS) + sizeof(int)*3 * 2];
|
|---|
| 3101 |
|
|---|
| 3102 | if (row < 0) row = 0;
|
|---|
| 3103 | if (row >= rows) row = rows - 1;
|
|---|
| 3104 | if (col < 0) col = 0;
|
|---|
| 3105 | if (col >= columns) col = columns - 1;
|
|---|
| 3106 |
|
|---|
| 3107 | sprintf(cm1, ESC_SET_CURSOR_POS, row + 1, col + 1);
|
|---|
| 3108 | write1(cm1);
|
|---|
| 3109 | }
|
|---|
| 3110 |
|
|---|
| 3111 | //----- Erase from cursor to end of line -----------------------
|
|---|
| 3112 | static void clear_to_eol(void)
|
|---|
| 3113 | {
|
|---|
| 3114 | write1(ESC_CLEAR2EOL);
|
|---|
| 3115 | }
|
|---|
| 3116 |
|
|---|
| 3117 | static void go_bottom_and_clear_to_eol(void)
|
|---|
| 3118 | {
|
|---|
| 3119 | place_cursor(rows - 1, 0);
|
|---|
| 3120 | clear_to_eol();
|
|---|
| 3121 | }
|
|---|
| 3122 |
|
|---|
| 3123 | //----- Erase from cursor to end of screen -----------------------
|
|---|
| 3124 | static void clear_to_eos(void)
|
|---|
| 3125 | {
|
|---|
| 3126 | write1(ESC_CLEAR2EOS);
|
|---|
| 3127 | }
|
|---|
| 3128 |
|
|---|
| 3129 | //----- Start standout mode ------------------------------------
|
|---|
| 3130 | static void standout_start(void)
|
|---|
| 3131 | {
|
|---|
| 3132 | write1(ESC_BOLD_TEXT);
|
|---|
| 3133 | }
|
|---|
| 3134 |
|
|---|
| 3135 | //----- End standout mode --------------------------------------
|
|---|
| 3136 | static void standout_end(void)
|
|---|
| 3137 | {
|
|---|
| 3138 | write1(ESC_NORM_TEXT);
|
|---|
| 3139 | }
|
|---|
| 3140 |
|
|---|
| 3141 | //----- Flash the screen --------------------------------------
|
|---|
| 3142 | static void flash(int h)
|
|---|
| 3143 | {
|
|---|
| 3144 | standout_start();
|
|---|
| 3145 | redraw(TRUE);
|
|---|
| 3146 | mysleep(h);
|
|---|
| 3147 | standout_end();
|
|---|
| 3148 | redraw(TRUE);
|
|---|
| 3149 | }
|
|---|
| 3150 |
|
|---|
| 3151 | static void indicate_error(void)
|
|---|
| 3152 | {
|
|---|
| 3153 | #if ENABLE_FEATURE_VI_CRASHME
|
|---|
| 3154 | if (crashme > 0)
|
|---|
| 3155 | return; // generate a random command
|
|---|
| 3156 | #endif
|
|---|
| 3157 | if (!err_method) {
|
|---|
| 3158 | write1(ESC_BELL);
|
|---|
| 3159 | } else {
|
|---|
| 3160 | flash(10);
|
|---|
| 3161 | }
|
|---|
| 3162 | }
|
|---|
| 3163 |
|
|---|
| 3164 | //----- Screen[] Routines --------------------------------------
|
|---|
| 3165 | //----- Erase the Screen[] memory ------------------------------
|
|---|
| 3166 | static void screen_erase(void)
|
|---|
| 3167 | {
|
|---|
| 3168 | memset(screen, ' ', screensize); // clear new screen
|
|---|
| 3169 | }
|
|---|
| 3170 |
|
|---|
| 3171 | static int bufsum(char *buf, int count)
|
|---|
| 3172 | {
|
|---|
| 3173 | int sum = 0;
|
|---|
| 3174 | char *e = buf + count;
|
|---|
| 3175 |
|
|---|
| 3176 | while (buf < e)
|
|---|
| 3177 | sum += (unsigned char) *buf++;
|
|---|
| 3178 | return sum;
|
|---|
| 3179 | }
|
|---|
| 3180 |
|
|---|
| 3181 | //----- Draw the status line at bottom of the screen -------------
|
|---|
| 3182 | static void show_status_line(void)
|
|---|
| 3183 | {
|
|---|
| 3184 | int cnt = 0, cksum = 0;
|
|---|
| 3185 |
|
|---|
| 3186 | // either we already have an error or status message, or we
|
|---|
| 3187 | // create one.
|
|---|
| 3188 | if (!have_status_msg) {
|
|---|
| 3189 | cnt = format_edit_status();
|
|---|
| 3190 | cksum = bufsum(status_buffer, cnt);
|
|---|
| 3191 | }
|
|---|
| 3192 | if (have_status_msg || ((cnt > 0 && last_status_cksum != cksum))) {
|
|---|
| 3193 | last_status_cksum = cksum; // remember if we have seen this line
|
|---|
| 3194 | go_bottom_and_clear_to_eol();
|
|---|
| 3195 | write1(status_buffer);
|
|---|
| 3196 | if (have_status_msg) {
|
|---|
| 3197 | if (((int)strlen(status_buffer) - (have_status_msg - 1)) >
|
|---|
| 3198 | (columns - 1) ) {
|
|---|
| 3199 | have_status_msg = 0;
|
|---|
| 3200 | Hit_Return();
|
|---|
| 3201 | }
|
|---|
| 3202 | have_status_msg = 0;
|
|---|
| 3203 | }
|
|---|
| 3204 | place_cursor(crow, ccol); // put cursor back in correct place
|
|---|
| 3205 | }
|
|---|
| 3206 | fflush_all();
|
|---|
| 3207 | }
|
|---|
| 3208 |
|
|---|
| 3209 | //----- format the status buffer, the bottom line of screen ------
|
|---|
| 3210 | // format status buffer, with STANDOUT mode
|
|---|
| 3211 | static void status_line_bold(const char *format, ...)
|
|---|
| 3212 | {
|
|---|
| 3213 | va_list args;
|
|---|
| 3214 |
|
|---|
| 3215 | va_start(args, format);
|
|---|
| 3216 | strcpy(status_buffer, ESC_BOLD_TEXT);
|
|---|
| 3217 | vsprintf(status_buffer + sizeof(ESC_BOLD_TEXT)-1, format, args);
|
|---|
| 3218 | strcat(status_buffer, ESC_NORM_TEXT);
|
|---|
| 3219 | va_end(args);
|
|---|
| 3220 |
|
|---|
| 3221 | have_status_msg = 1 + sizeof(ESC_BOLD_TEXT) + sizeof(ESC_NORM_TEXT) - 2;
|
|---|
| 3222 | }
|
|---|
| 3223 |
|
|---|
| 3224 | static void status_line_bold_errno(const char *fn)
|
|---|
| 3225 | {
|
|---|
| 3226 | status_line_bold("'%s' %s", fn, strerror(errno));
|
|---|
| 3227 | }
|
|---|
| 3228 |
|
|---|
| 3229 | // format status buffer
|
|---|
| 3230 | static void status_line(const char *format, ...)
|
|---|
| 3231 | {
|
|---|
| 3232 | va_list args;
|
|---|
| 3233 |
|
|---|
| 3234 | va_start(args, format);
|
|---|
| 3235 | vsprintf(status_buffer, format, args);
|
|---|
| 3236 | va_end(args);
|
|---|
| 3237 |
|
|---|
| 3238 | have_status_msg = 1;
|
|---|
| 3239 | }
|
|---|
| 3240 |
|
|---|
| 3241 | // copy s to buf, convert unprintable
|
|---|
| 3242 | static void print_literal(char *buf, const char *s)
|
|---|
| 3243 | {
|
|---|
| 3244 | char *d;
|
|---|
| 3245 | unsigned char c;
|
|---|
| 3246 |
|
|---|
| 3247 | buf[0] = '\0';
|
|---|
| 3248 | if (!s[0])
|
|---|
| 3249 | s = "(NULL)";
|
|---|
| 3250 |
|
|---|
| 3251 | d = buf;
|
|---|
| 3252 | for (; *s; s++) {
|
|---|
| 3253 | int c_is_no_print;
|
|---|
| 3254 |
|
|---|
| 3255 | c = *s;
|
|---|
| 3256 | c_is_no_print = (c & 0x80) && !Isprint(c);
|
|---|
| 3257 | if (c_is_no_print) {
|
|---|
| 3258 | strcpy(d, ESC_NORM_TEXT);
|
|---|
| 3259 | d += sizeof(ESC_NORM_TEXT)-1;
|
|---|
| 3260 | c = '.';
|
|---|
| 3261 | }
|
|---|
| 3262 | if (c < ' ' || c == 0x7f) {
|
|---|
| 3263 | *d++ = '^';
|
|---|
| 3264 | c |= '@'; /* 0x40 */
|
|---|
| 3265 | if (c == 0x7f)
|
|---|
| 3266 | c = '?';
|
|---|
| 3267 | }
|
|---|
| 3268 | *d++ = c;
|
|---|
| 3269 | *d = '\0';
|
|---|
| 3270 | if (c_is_no_print) {
|
|---|
| 3271 | strcpy(d, ESC_BOLD_TEXT);
|
|---|
| 3272 | d += sizeof(ESC_BOLD_TEXT)-1;
|
|---|
| 3273 | }
|
|---|
| 3274 | if (*s == '\n') {
|
|---|
| 3275 | *d++ = '$';
|
|---|
| 3276 | *d = '\0';
|
|---|
| 3277 | }
|
|---|
| 3278 | if (d - buf > MAX_INPUT_LEN - 10) // paranoia
|
|---|
| 3279 | break;
|
|---|
| 3280 | }
|
|---|
| 3281 | }
|
|---|
| 3282 |
|
|---|
| 3283 | static void not_implemented(const char *s)
|
|---|
| 3284 | {
|
|---|
| 3285 | char buf[MAX_INPUT_LEN];
|
|---|
| 3286 |
|
|---|
| 3287 | print_literal(buf, s);
|
|---|
| 3288 | status_line_bold("\'%s\' is not implemented", buf);
|
|---|
| 3289 | }
|
|---|
| 3290 |
|
|---|
| 3291 | // show file status on status line
|
|---|
| 3292 | static int format_edit_status(void)
|
|---|
| 3293 | {
|
|---|
| 3294 | static const char cmd_mode_indicator[] ALIGN1 = "-IR-";
|
|---|
| 3295 |
|
|---|
| 3296 | #define tot format_edit_status__tot
|
|---|
| 3297 |
|
|---|
| 3298 | int cur, percent, ret, trunc_at;
|
|---|
| 3299 |
|
|---|
| 3300 | // modified_count is now a counter rather than a flag. this
|
|---|
| 3301 | // helps reduce the amount of line counting we need to do.
|
|---|
| 3302 | // (this will cause a mis-reporting of modified status
|
|---|
| 3303 | // once every MAXINT editing operations.)
|
|---|
| 3304 |
|
|---|
| 3305 | // it would be nice to do a similar optimization here -- if
|
|---|
| 3306 | // we haven't done a motion that could have changed which line
|
|---|
| 3307 | // we're on, then we shouldn't have to do this count_lines()
|
|---|
| 3308 | cur = count_lines(text, dot);
|
|---|
| 3309 |
|
|---|
| 3310 | // count_lines() is expensive.
|
|---|
| 3311 | // Call it only if something was changed since last time
|
|---|
| 3312 | // we were here:
|
|---|
| 3313 | if (modified_count != last_modified_count) {
|
|---|
| 3314 | tot = cur + count_lines(dot, end - 1) - 1;
|
|---|
| 3315 | last_modified_count = modified_count;
|
|---|
| 3316 | }
|
|---|
| 3317 |
|
|---|
| 3318 | // current line percent
|
|---|
| 3319 | // ------------- ~~ ----------
|
|---|
| 3320 | // total lines 100
|
|---|
| 3321 | if (tot > 0) {
|
|---|
| 3322 | percent = (100 * cur) / tot;
|
|---|
| 3323 | } else {
|
|---|
| 3324 | cur = tot = 0;
|
|---|
| 3325 | percent = 100;
|
|---|
| 3326 | }
|
|---|
| 3327 |
|
|---|
| 3328 | trunc_at = columns < STATUS_BUFFER_LEN-1 ?
|
|---|
| 3329 | columns : STATUS_BUFFER_LEN-1;
|
|---|
| 3330 |
|
|---|
| 3331 | ret = snprintf(status_buffer, trunc_at+1,
|
|---|
| 3332 | #if ENABLE_FEATURE_VI_READONLY
|
|---|
| 3333 | "%c %s%s%s %d/%d %d%%",
|
|---|
| 3334 | #else
|
|---|
| 3335 | "%c %s%s %d/%d %d%%",
|
|---|
| 3336 | #endif
|
|---|
| 3337 | cmd_mode_indicator[cmd_mode & 3],
|
|---|
| 3338 | (current_filename != NULL ? current_filename : "No file"),
|
|---|
| 3339 | #if ENABLE_FEATURE_VI_READONLY
|
|---|
| 3340 | (readonly_mode ? " [Readonly]" : ""),
|
|---|
| 3341 | #endif
|
|---|
| 3342 | (modified_count ? " [Modified]" : ""),
|
|---|
| 3343 | cur, tot, percent);
|
|---|
| 3344 |
|
|---|
| 3345 | if (ret >= 0 && ret < trunc_at)
|
|---|
| 3346 | return ret; /* it all fit */
|
|---|
| 3347 |
|
|---|
| 3348 | return trunc_at; /* had to truncate */
|
|---|
| 3349 | #undef tot
|
|---|
| 3350 | }
|
|---|
| 3351 |
|
|---|
| 3352 | //----- Force refresh of all Lines -----------------------------
|
|---|
| 3353 | static void redraw(int full_screen)
|
|---|
| 3354 | {
|
|---|
| 3355 | place_cursor(0, 0);
|
|---|
| 3356 | clear_to_eos();
|
|---|
| 3357 | screen_erase(); // erase the internal screen buffer
|
|---|
| 3358 | last_status_cksum = 0; // force status update
|
|---|
| 3359 | refresh(full_screen); // this will redraw the entire display
|
|---|
| 3360 | show_status_line();
|
|---|
| 3361 | }
|
|---|
| 3362 |
|
|---|
| 3363 | //----- Format a text[] line into a buffer ---------------------
|
|---|
| 3364 | static char* format_line(char *src /*, int li*/)
|
|---|
| 3365 | {
|
|---|
| 3366 | unsigned char c;
|
|---|
| 3367 | int co;
|
|---|
| 3368 | int ofs = offset;
|
|---|
| 3369 | char *dest = scr_out_buf; // [MAX_SCR_COLS + MAX_TABSTOP * 2]
|
|---|
| 3370 |
|
|---|
| 3371 | c = '~'; // char in col 0 in non-existent lines is '~'
|
|---|
| 3372 | co = 0;
|
|---|
| 3373 | while (co < columns + tabstop) {
|
|---|
| 3374 | // have we gone past the end?
|
|---|
| 3375 | if (src < end) {
|
|---|
| 3376 | c = *src++;
|
|---|
| 3377 | if (c == '\n')
|
|---|
| 3378 | break;
|
|---|
| 3379 | if ((c & 0x80) && !Isprint(c)) {
|
|---|
| 3380 | c = '.';
|
|---|
| 3381 | }
|
|---|
| 3382 | if (c < ' ' || c == 0x7f) {
|
|---|
| 3383 | if (c == '\t') {
|
|---|
| 3384 | c = ' ';
|
|---|
| 3385 | // co % 8 != 7
|
|---|
| 3386 | while ((co % tabstop) != (tabstop - 1)) {
|
|---|
| 3387 | dest[co++] = c;
|
|---|
| 3388 | }
|
|---|
| 3389 | } else {
|
|---|
| 3390 | dest[co++] = '^';
|
|---|
| 3391 | if (c == 0x7f)
|
|---|
| 3392 | c = '?';
|
|---|
| 3393 | else
|
|---|
| 3394 | c += '@'; // Ctrl-X -> 'X'
|
|---|
| 3395 | }
|
|---|
| 3396 | }
|
|---|
| 3397 | }
|
|---|
| 3398 | dest[co++] = c;
|
|---|
| 3399 | // discard scrolled-off-to-the-left portion,
|
|---|
| 3400 | // in tabstop-sized pieces
|
|---|
| 3401 | if (ofs >= tabstop && co >= tabstop) {
|
|---|
| 3402 | memmove(dest, dest + tabstop, co);
|
|---|
| 3403 | co -= tabstop;
|
|---|
| 3404 | ofs -= tabstop;
|
|---|
| 3405 | }
|
|---|
| 3406 | if (src >= end)
|
|---|
| 3407 | break;
|
|---|
| 3408 | }
|
|---|
| 3409 | // check "short line, gigantic offset" case
|
|---|
| 3410 | if (co < ofs)
|
|---|
| 3411 | ofs = co;
|
|---|
| 3412 | // discard last scrolled off part
|
|---|
| 3413 | co -= ofs;
|
|---|
| 3414 | dest += ofs;
|
|---|
| 3415 | // fill the rest with spaces
|
|---|
| 3416 | if (co < columns)
|
|---|
| 3417 | memset(&dest[co], ' ', columns - co);
|
|---|
| 3418 | return dest;
|
|---|
| 3419 | }
|
|---|
| 3420 |
|
|---|
| 3421 | //----- Refresh the changed screen lines -----------------------
|
|---|
| 3422 | // Copy the source line from text[] into the buffer and note
|
|---|
| 3423 | // if the current screenline is different from the new buffer.
|
|---|
| 3424 | // If they differ then that line needs redrawing on the terminal.
|
|---|
| 3425 | //
|
|---|
| 3426 | static void refresh(int full_screen)
|
|---|
| 3427 | {
|
|---|
| 3428 | #define old_offset refresh__old_offset
|
|---|
| 3429 |
|
|---|
| 3430 | int li, changed;
|
|---|
| 3431 | char *tp, *sp; // pointer into text[] and screen[]
|
|---|
| 3432 |
|
|---|
| 3433 | if (ENABLE_FEATURE_VI_WIN_RESIZE IF_FEATURE_VI_ASK_TERMINAL(&& !G.get_rowcol_error) ) {
|
|---|
| 3434 | unsigned c = columns, r = rows;
|
|---|
| 3435 | query_screen_dimensions();
|
|---|
| 3436 | full_screen |= (c - columns) | (r - rows);
|
|---|
| 3437 | }
|
|---|
| 3438 | sync_cursor(dot, &crow, &ccol); // where cursor will be (on "dot")
|
|---|
| 3439 | tp = screenbegin; // index into text[] of top line
|
|---|
| 3440 |
|
|---|
| 3441 | // compare text[] to screen[] and mark screen[] lines that need updating
|
|---|
| 3442 | for (li = 0; li < rows - 1; li++) {
|
|---|
| 3443 | int cs, ce; // column start & end
|
|---|
| 3444 | char *out_buf;
|
|---|
| 3445 | // format current text line
|
|---|
| 3446 | out_buf = format_line(tp /*, li*/);
|
|---|
| 3447 |
|
|---|
| 3448 | // skip to the end of the current text[] line
|
|---|
| 3449 | if (tp < end) {
|
|---|
| 3450 | char *t = memchr(tp, '\n', end - tp);
|
|---|
| 3451 | if (!t) t = end - 1;
|
|---|
| 3452 | tp = t + 1;
|
|---|
| 3453 | }
|
|---|
| 3454 |
|
|---|
| 3455 | // see if there are any changes between virtual screen and out_buf
|
|---|
| 3456 | changed = FALSE; // assume no change
|
|---|
| 3457 | cs = 0;
|
|---|
| 3458 | ce = columns - 1;
|
|---|
| 3459 | int cursor_column = 0;
|
|---|
| 3460 | sp = &screen[li * columns]; // start of screen line
|
|---|
| 3461 | if (full_screen) {
|
|---|
| 3462 | // force re-draw of every single column from 0 - columns-1
|
|---|
| 3463 | goto re0;
|
|---|
| 3464 | }
|
|---|
| 3465 | // compare newly formatted buffer with virtual screen
|
|---|
| 3466 | // look forward for first difference between buf and screen
|
|---|
| 3467 | #ifndef ENABLE_BASIC_MULTI_CHAR_CODE
|
|---|
| 3468 | for (; cs <= ce; cs++) {
|
|---|
| 3469 | if (out_buf[cs] != sp[cs]) {
|
|---|
| 3470 | changed = TRUE; // mark for redraw
|
|---|
| 3471 | break;
|
|---|
| 3472 | }
|
|---|
| 3473 | }
|
|---|
| 3474 | #else
|
|---|
| 3475 | while (cs <= ce) {
|
|---|
| 3476 | int code_size;
|
|---|
| 3477 | unsigned short tmp_code = Utf8_to_Utf16(&sp[cs], &code_size);
|
|---|
| 3478 | if (memcmp(&out_buf[cs], &sp[cs], code_size)) {
|
|---|
| 3479 | changed = TRUE; // mark for redraw
|
|---|
| 3480 | break;
|
|---|
| 3481 | }
|
|---|
| 3482 | cs += code_size;
|
|---|
| 3483 | cursor_column += (code_size > 1 ? 2 : 1);
|
|---|
| 3484 | }
|
|---|
| 3485 | #endif
|
|---|
| 3486 | // look backward for last difference between out_buf and screen
|
|---|
| 3487 | #ifndef ENABLE_BASIC_MULTI_CHAR_CODE
|
|---|
| 3488 | for (; ce >= cs; ce--) {
|
|---|
| 3489 | if (out_buf[ce] != sp[ce]) {
|
|---|
| 3490 | changed = TRUE; // mark for redraw
|
|---|
| 3491 | break;
|
|---|
| 3492 | }
|
|---|
| 3493 | }
|
|---|
| 3494 | #else
|
|---|
| 3495 | while (ce >= cs) {
|
|---|
| 3496 | int code_size = bs_char_count(sp, ce);
|
|---|
| 3497 | if (memcmp(&out_buf[ce], &sp[ce], code_size)) {
|
|---|
| 3498 | changed = TRUE; // mark for redraw
|
|---|
| 3499 | break;
|
|---|
| 3500 | }
|
|---|
| 3501 | ce -= code_size;
|
|---|
| 3502 | }
|
|---|
| 3503 | #endif
|
|---|
| 3504 | // now, cs is index of first diff, and ce is index of last diff
|
|---|
| 3505 |
|
|---|
| 3506 | // if horz offset has changed, force a redraw
|
|---|
| 3507 | if (offset != old_offset) {
|
|---|
| 3508 | re0:
|
|---|
| 3509 | changed = TRUE;
|
|---|
| 3510 | }
|
|---|
| 3511 |
|
|---|
| 3512 | // make a sanity check of columns indexes
|
|---|
| 3513 | if (cs < 0) { cs = 0; cursor_column = 0; }
|
|---|
| 3514 | if (ce > columns - 1) ce = columns - 1;
|
|---|
| 3515 | if (cs > ce) { cs = 0; ce = columns - 1; cursor_column = 0; }
|
|---|
| 3516 | // is there a change between virtual screen and out_buf
|
|---|
| 3517 | if (changed) {
|
|---|
| 3518 | // copy changed part of buffer to virtual screen
|
|---|
| 3519 | memcpy(sp+cs, out_buf+cs, ce-cs+1);
|
|---|
| 3520 | #ifndef ENABLE_BASIC_MULTI_CHAR_CODE
|
|---|
| 3521 | place_cursor(li, cs);
|
|---|
| 3522 | #else
|
|---|
| 3523 | place_cursor(li, cursor_column);
|
|---|
| 3524 | #endif
|
|---|
| 3525 | // write line out to terminal
|
|---|
| 3526 | fwrite(&sp[cs], ce - cs + 1, 1, stdout);
|
|---|
| 3527 | }
|
|---|
| 3528 | }
|
|---|
| 3529 |
|
|---|
| 3530 | place_cursor(crow, ccol);
|
|---|
| 3531 |
|
|---|
| 3532 | old_offset = offset;
|
|---|
| 3533 | #undef old_offset
|
|---|
| 3534 | }
|
|---|
| 3535 |
|
|---|
| 3536 | //---------------------------------------------------------------------
|
|---|
| 3537 | //----- the Ascii Chart -----------------------------------------------
|
|---|
| 3538 | //
|
|---|
| 3539 | // 00 nul 01 soh 02 stx 03 etx 04 eot 05 enq 06 ack 07 bel
|
|---|
| 3540 | // 08 bs 09 ht 0a nl 0b vt 0c np 0d cr 0e so 0f si
|
|---|
| 3541 | // 10 dle 11 dc1 12 dc2 13 dc3 14 dc4 15 nak 16 syn 17 etb
|
|---|
| 3542 | // 18 can 19 em 1a sub 1b esc 1c fs 1d gs 1e rs 1f us
|
|---|
| 3543 | // 20 sp 21 ! 22 " 23 # 24 $ 25 % 26 & 27 '
|
|---|
| 3544 | // 28 ( 29 ) 2a * 2b + 2c , 2d - 2e . 2f /
|
|---|
| 3545 | // 30 0 31 1 32 2 33 3 34 4 35 5 36 6 37 7
|
|---|
| 3546 | // 38 8 39 9 3a : 3b ; 3c < 3d = 3e > 3f ?
|
|---|
| 3547 | // 40 @ 41 A 42 B 43 C 44 D 45 E 46 F 47 G
|
|---|
| 3548 | // 48 H 49 I 4a J 4b K 4c L 4d M 4e N 4f O
|
|---|
| 3549 | // 50 P 51 Q 52 R 53 S 54 T 55 U 56 V 57 W
|
|---|
| 3550 | // 58 X 59 Y 5a Z 5b [ 5c \ 5d ] 5e ^ 5f _
|
|---|
| 3551 | // 60 ` 61 a 62 b 63 c 64 d 65 e 66 f 67 g
|
|---|
| 3552 | // 68 h 69 i 6a j 6b k 6c l 6d m 6e n 6f o
|
|---|
| 3553 | // 70 p 71 q 72 r 73 s 74 t 75 u 76 v 77 w
|
|---|
| 3554 | // 78 x 79 y 7a z 7b { 7c | 7d } 7e ~ 7f del
|
|---|
| 3555 | //---------------------------------------------------------------------
|
|---|
| 3556 |
|
|---|
| 3557 | //----- Execute a Vi Command -----------------------------------
|
|---|
| 3558 | static void do_cmd(int c)
|
|---|
| 3559 | {
|
|---|
| 3560 | char *p, *q, *save_dot;
|
|---|
| 3561 | char buf[12];
|
|---|
| 3562 | int dir;
|
|---|
| 3563 | int cnt, i, j;
|
|---|
| 3564 | int c1;
|
|---|
| 3565 |
|
|---|
| 3566 | // c1 = c; // quiet the compiler
|
|---|
| 3567 | // cnt = yf = 0; // quiet the compiler
|
|---|
| 3568 | // p = q = save_dot = buf; // quiet the compiler
|
|---|
| 3569 | memset(buf, '\0', sizeof(buf));
|
|---|
| 3570 |
|
|---|
| 3571 | show_status_line();
|
|---|
| 3572 |
|
|---|
| 3573 | /* if this is a cursor key, skip these checks */
|
|---|
| 3574 | switch (c) {
|
|---|
| 3575 | case KEYCODE_UP:
|
|---|
| 3576 | case KEYCODE_DOWN:
|
|---|
| 3577 | case KEYCODE_LEFT:
|
|---|
| 3578 | case KEYCODE_RIGHT:
|
|---|
| 3579 | case KEYCODE_HOME:
|
|---|
| 3580 | case KEYCODE_END:
|
|---|
| 3581 | case KEYCODE_PAGEUP:
|
|---|
| 3582 | case KEYCODE_PAGEDOWN:
|
|---|
| 3583 | case KEYCODE_DELETE:
|
|---|
| 3584 | goto key_cmd_mode;
|
|---|
| 3585 | }
|
|---|
| 3586 |
|
|---|
| 3587 | if (cmd_mode == 2) {
|
|---|
| 3588 | // flip-flop Insert/Replace mode
|
|---|
| 3589 | if (c == KEYCODE_INSERT)
|
|---|
| 3590 | goto dc_i;
|
|---|
| 3591 | // we are 'R'eplacing the current *dot with new char
|
|---|
| 3592 | if (*dot == '\n') {
|
|---|
| 3593 | // don't Replace past E-o-l
|
|---|
| 3594 | cmd_mode = 1; // convert to insert
|
|---|
| 3595 | undo_queue_commit();
|
|---|
| 3596 | } else {
|
|---|
| 3597 | if (1 <= c || Isprint(c)) {
|
|---|
| 3598 | if (c != 27)
|
|---|
| 3599 | dot = yank_delete(dot, dot, 0, YANKDEL, ALLOW_UNDO); // delete char
|
|---|
| 3600 | dot = char_insert(dot, c, ALLOW_UNDO_CHAIN); // insert new char
|
|---|
| 3601 | }
|
|---|
| 3602 | goto dc1;
|
|---|
| 3603 | }
|
|---|
| 3604 | }
|
|---|
| 3605 | if (cmd_mode == 1) {
|
|---|
| 3606 | // hitting "Insert" twice means "R" replace mode
|
|---|
| 3607 | if (c == KEYCODE_INSERT) goto dc5;
|
|---|
| 3608 | // insert the char c at "dot"
|
|---|
| 3609 | if (1 <= c || Isprint(c)) {
|
|---|
| 3610 | dot = char_insert(dot, c, ALLOW_UNDO_QUEUED);
|
|---|
| 3611 | }
|
|---|
| 3612 | goto dc1;
|
|---|
| 3613 | }
|
|---|
| 3614 |
|
|---|
| 3615 | key_cmd_mode:
|
|---|
| 3616 | switch (c) {
|
|---|
| 3617 | //case 0x01: // soh
|
|---|
| 3618 | //case 0x09: // ht
|
|---|
| 3619 | //case 0x0b: // vt
|
|---|
| 3620 | //case 0x0e: // so
|
|---|
| 3621 | //case 0x0f: // si
|
|---|
| 3622 | //case 0x10: // dle
|
|---|
| 3623 | //case 0x11: // dc1
|
|---|
| 3624 | //case 0x13: // dc3
|
|---|
| 3625 | #if ENABLE_FEATURE_VI_CRASHME
|
|---|
| 3626 | case 0x14: // dc4 ctrl-T
|
|---|
| 3627 | crashme = (crashme == 0) ? 1 : 0;
|
|---|
| 3628 | break;
|
|---|
| 3629 | #endif
|
|---|
| 3630 | //case 0x16: // syn
|
|---|
| 3631 | //case 0x17: // etb
|
|---|
| 3632 | //case 0x18: // can
|
|---|
| 3633 | //case 0x1c: // fs
|
|---|
| 3634 | //case 0x1d: // gs
|
|---|
| 3635 | //case 0x1e: // rs
|
|---|
| 3636 | //case 0x1f: // us
|
|---|
| 3637 | //case '!': // !-
|
|---|
| 3638 | //case '#': // #-
|
|---|
| 3639 | //case '&': // &-
|
|---|
| 3640 | //case '(': // (-
|
|---|
| 3641 | //case ')': // )-
|
|---|
| 3642 | //case '*': // *-
|
|---|
| 3643 | //case '=': // =-
|
|---|
| 3644 | //case '@': // @-
|
|---|
| 3645 | //case 'F': // F-
|
|---|
| 3646 | //case 'K': // K-
|
|---|
| 3647 | //case 'Q': // Q-
|
|---|
| 3648 | //case 'S': // S-
|
|---|
| 3649 | //case 'T': // T-
|
|---|
| 3650 | //case 'V': // V-
|
|---|
| 3651 | //case '[': // [-
|
|---|
| 3652 | //case '\\': // \-
|
|---|
| 3653 | //case ']': // ]-
|
|---|
| 3654 | //case '_': // _-
|
|---|
| 3655 | //case '`': // `-
|
|---|
| 3656 | //case 'v': // v-
|
|---|
| 3657 | default: // unrecognized command
|
|---|
| 3658 | buf[0] = c;
|
|---|
| 3659 | buf[1] = '\0';
|
|---|
| 3660 | not_implemented(buf);
|
|---|
| 3661 | end_cmd_q(); // stop adding to q
|
|---|
| 3662 | case 0x00: // nul- ignore
|
|---|
| 3663 | break;
|
|---|
| 3664 | case 2: // ctrl-B scroll up full screen
|
|---|
| 3665 | case KEYCODE_PAGEUP: // Cursor Key Page Up
|
|---|
| 3666 | dot_scroll(rows - 2, -1);
|
|---|
| 3667 | break;
|
|---|
| 3668 | case 4: // ctrl-D scroll down half screen
|
|---|
| 3669 | dot_scroll((rows - 2) / 2, 1);
|
|---|
| 3670 | break;
|
|---|
| 3671 | case 5: // ctrl-E scroll down one line
|
|---|
| 3672 | dot_scroll(1, 1);
|
|---|
| 3673 | break;
|
|---|
| 3674 | case 6: // ctrl-F scroll down full screen
|
|---|
| 3675 | case KEYCODE_PAGEDOWN: // Cursor Key Page Down
|
|---|
| 3676 | dot_scroll(rows - 2, 1);
|
|---|
| 3677 | break;
|
|---|
| 3678 | case 7: // ctrl-G show current status
|
|---|
| 3679 | last_status_cksum = 0; // force status update
|
|---|
| 3680 | break;
|
|---|
| 3681 | case 'h': // h- move left
|
|---|
| 3682 | case KEYCODE_LEFT: // cursor key Left
|
|---|
| 3683 | case 8: // ctrl-H- move left (This may be ERASE char)
|
|---|
| 3684 | case 0x7f: // DEL- move left (This may be ERASE char)
|
|---|
| 3685 | do {
|
|---|
| 3686 | dot_left();
|
|---|
| 3687 | } while (--cmdcnt > 0);
|
|---|
| 3688 | break;
|
|---|
| 3689 | case 10: // Newline ^J
|
|---|
| 3690 | case 'j': // j- goto next line, same col
|
|---|
| 3691 | case KEYCODE_DOWN: // cursor key Down
|
|---|
| 3692 | do {
|
|---|
| 3693 | dot_next(); // go to next B-o-l
|
|---|
| 3694 | // try stay in same col
|
|---|
| 3695 | dot = move_to_col(dot, ccol + offset);
|
|---|
| 3696 | } while (--cmdcnt > 0);
|
|---|
| 3697 | break;
|
|---|
| 3698 | case 12: // ctrl-L force redraw whole screen
|
|---|
| 3699 | case 18: // ctrl-R force redraw
|
|---|
| 3700 | place_cursor(0, 0);
|
|---|
| 3701 | clear_to_eos();
|
|---|
| 3702 | //mysleep(10); // why???
|
|---|
| 3703 | screen_erase(); // erase the internal screen buffer
|
|---|
| 3704 | last_status_cksum = 0; // force status update
|
|---|
| 3705 | refresh(TRUE); // this will redraw the entire display
|
|---|
| 3706 | break;
|
|---|
| 3707 | case 13: // Carriage Return ^M
|
|---|
| 3708 | case '+': // +- goto next line
|
|---|
| 3709 | do {
|
|---|
| 3710 | dot_next();
|
|---|
| 3711 | dot_skip_over_ws();
|
|---|
| 3712 | } while (--cmdcnt > 0);
|
|---|
| 3713 | break;
|
|---|
| 3714 | case 21: // ctrl-U scroll up half screen
|
|---|
| 3715 | dot_scroll((rows - 2) / 2, -1);
|
|---|
| 3716 | break;
|
|---|
| 3717 | case 25: // ctrl-Y scroll up one line
|
|---|
| 3718 | dot_scroll(1, -1);
|
|---|
| 3719 | break;
|
|---|
| 3720 | case 27: // esc
|
|---|
| 3721 | if (cmd_mode == 0)
|
|---|
| 3722 | indicate_error();
|
|---|
| 3723 | cmd_mode = 0; // stop insrting
|
|---|
| 3724 | undo_queue_commit();
|
|---|
| 3725 | end_cmd_q();
|
|---|
| 3726 | last_status_cksum = 0; // force status update
|
|---|
| 3727 | break;
|
|---|
| 3728 | case ' ': // move right
|
|---|
| 3729 | case 'l': // move right
|
|---|
| 3730 | case KEYCODE_RIGHT: // Cursor Key Right
|
|---|
| 3731 | do {
|
|---|
| 3732 | dot_right();
|
|---|
| 3733 | } while (--cmdcnt > 0);
|
|---|
| 3734 | break;
|
|---|
| 3735 | #if ENABLE_FEATURE_VI_YANKMARK
|
|---|
| 3736 | case '"': // "- name a register to use for Delete/Yank
|
|---|
| 3737 | c1 = (get_one_char() | 0x20) - 'a'; // | 0x20 is tolower()
|
|---|
| 3738 | if ((unsigned)c1 <= 25) { // a-z?
|
|---|
| 3739 | YDreg = c1;
|
|---|
| 3740 | } else {
|
|---|
| 3741 | indicate_error();
|
|---|
| 3742 | }
|
|---|
| 3743 | break;
|
|---|
| 3744 | case '\'': // '- goto a specific mark
|
|---|
| 3745 | c1 = (get_one_char() | 0x20);
|
|---|
| 3746 | if ((unsigned)(c1 - 'a') <= 25) { // a-z?
|
|---|
| 3747 | c1 = (c1 - 'a');
|
|---|
| 3748 | // get the b-o-l
|
|---|
| 3749 | q = mark[c1];
|
|---|
| 3750 | if (text <= q && q < end) {
|
|---|
| 3751 | dot = q;
|
|---|
| 3752 | dot_begin(); // go to B-o-l
|
|---|
| 3753 | dot_skip_over_ws();
|
|---|
| 3754 | }
|
|---|
| 3755 | } else if (c1 == '\'') { // goto previous context
|
|---|
| 3756 | dot = swap_context(dot); // swap current and previous context
|
|---|
| 3757 | dot_begin(); // go to B-o-l
|
|---|
| 3758 | dot_skip_over_ws();
|
|---|
| 3759 | } else {
|
|---|
| 3760 | indicate_error();
|
|---|
| 3761 | }
|
|---|
| 3762 | break;
|
|---|
| 3763 | case 'm': // m- Mark a line
|
|---|
| 3764 | // this is really stupid. If there are any inserts or deletes
|
|---|
| 3765 | // between text[0] and dot then this mark will not point to the
|
|---|
| 3766 | // correct location! It could be off by many lines!
|
|---|
| 3767 | // Well..., at least its quick and dirty.
|
|---|
| 3768 | c1 = (get_one_char() | 0x20) - 'a';
|
|---|
| 3769 | if ((unsigned)c1 <= 25) { // a-z?
|
|---|
| 3770 | // remember the line
|
|---|
| 3771 | mark[c1] = dot;
|
|---|
| 3772 | } else {
|
|---|
| 3773 | indicate_error();
|
|---|
| 3774 | }
|
|---|
| 3775 | break;
|
|---|
| 3776 | case 'P': // P- Put register before
|
|---|
| 3777 | case 'p': // p- put register after
|
|---|
| 3778 | p = reg[YDreg];
|
|---|
| 3779 | if (p == NULL) {
|
|---|
| 3780 | status_line_bold("Nothing in register %c", what_reg());
|
|---|
| 3781 | break;
|
|---|
| 3782 | }
|
|---|
| 3783 | // are we putting whole lines or strings
|
|---|
| 3784 | if (strchr(p, '\n') != NULL) {
|
|---|
| 3785 | if (c == 'P') {
|
|---|
| 3786 | dot_begin(); // putting lines- Put above
|
|---|
| 3787 | }
|
|---|
| 3788 | if (c == 'p') {
|
|---|
| 3789 | // are we putting after very last line?
|
|---|
| 3790 | if (end_line(dot) == (end - 1)) {
|
|---|
| 3791 | dot = end; // force dot to end of text[]
|
|---|
| 3792 | } else {
|
|---|
| 3793 | dot_next(); // next line, then put before
|
|---|
| 3794 | }
|
|---|
| 3795 | }
|
|---|
| 3796 | } else {
|
|---|
| 3797 | if (c == 'p')
|
|---|
| 3798 | dot_right(); // move to right, can move to NL
|
|---|
| 3799 | }
|
|---|
| 3800 | string_insert(dot, p, ALLOW_UNDO); // insert the string
|
|---|
| 3801 | end_cmd_q(); // stop adding to q
|
|---|
| 3802 | break;
|
|---|
| 3803 | case 'U': // U- Undo; replace current line with original version
|
|---|
| 3804 | if (reg[Ureg] != NULL) {
|
|---|
| 3805 | p = begin_line(dot);
|
|---|
| 3806 | q = end_line(dot);
|
|---|
| 3807 | p = text_hole_delete(p, q, ALLOW_UNDO); // delete cur line
|
|---|
| 3808 | p += string_insert(p, reg[Ureg], ALLOW_UNDO_CHAIN); // insert orig line
|
|---|
| 3809 | dot = p;
|
|---|
| 3810 | dot_skip_over_ws();
|
|---|
| 3811 | }
|
|---|
| 3812 | break;
|
|---|
| 3813 | #endif /* FEATURE_VI_YANKMARK */
|
|---|
| 3814 | #if ENABLE_FEATURE_VI_UNDO
|
|---|
| 3815 | case 'u': // u- undo last operation
|
|---|
| 3816 | undo_pop();
|
|---|
| 3817 | break;
|
|---|
| 3818 | #endif
|
|---|
| 3819 | case '$': // $- goto end of line
|
|---|
| 3820 | case KEYCODE_END: // Cursor Key End
|
|---|
| 3821 | for (;;) {
|
|---|
| 3822 | dot = end_line(dot);
|
|---|
| 3823 | if (--cmdcnt <= 0)
|
|---|
| 3824 | break;
|
|---|
| 3825 | dot_next();
|
|---|
| 3826 | }
|
|---|
| 3827 | break;
|
|---|
| 3828 | case '%': // %- find matching char of pair () [] {}
|
|---|
| 3829 | for (q = dot; q < end && *q != '\n'; q++) {
|
|---|
| 3830 | if (strchr("()[]{}", *q) != NULL) {
|
|---|
| 3831 | // we found half of a pair
|
|---|
| 3832 | p = find_pair(q, *q);
|
|---|
| 3833 | if (p == NULL) {
|
|---|
| 3834 | indicate_error();
|
|---|
| 3835 | } else {
|
|---|
| 3836 | dot = p;
|
|---|
| 3837 | }
|
|---|
| 3838 | break;
|
|---|
| 3839 | }
|
|---|
| 3840 | }
|
|---|
| 3841 | if (*q == '\n')
|
|---|
| 3842 | indicate_error();
|
|---|
| 3843 | break;
|
|---|
| 3844 | case 'f': // f- forward to a user specified char
|
|---|
| 3845 | last_forward_char = get_one_char(); // get the search char
|
|---|
| 3846 | //
|
|---|
| 3847 | // dont separate these two commands. 'f' depends on ';'
|
|---|
| 3848 | //
|
|---|
| 3849 | //**** fall through to ... ';'
|
|---|
| 3850 | case ';': // ;- look at rest of line for last forward char
|
|---|
| 3851 | do {
|
|---|
| 3852 | if (last_forward_char == 0)
|
|---|
| 3853 | break;
|
|---|
| 3854 | q = dot + 1;
|
|---|
| 3855 | while (q < end - 1 && *q != '\n' && *q != last_forward_char) {
|
|---|
| 3856 | q++;
|
|---|
| 3857 | }
|
|---|
| 3858 | if (*q == last_forward_char)
|
|---|
| 3859 | dot = q;
|
|---|
| 3860 | } while (--cmdcnt > 0);
|
|---|
| 3861 | break;
|
|---|
| 3862 | case ',': // repeat latest 'f' in opposite direction
|
|---|
| 3863 | if (last_forward_char == 0)
|
|---|
| 3864 | break;
|
|---|
| 3865 | do {
|
|---|
| 3866 | q = dot - 1;
|
|---|
| 3867 | while (q >= text && *q != '\n' && *q != last_forward_char) {
|
|---|
| 3868 | q--;
|
|---|
| 3869 | }
|
|---|
| 3870 | if (q >= text && *q == last_forward_char)
|
|---|
| 3871 | dot = q;
|
|---|
| 3872 | } while (--cmdcnt > 0);
|
|---|
| 3873 | break;
|
|---|
| 3874 |
|
|---|
| 3875 | case '-': // -- goto prev line
|
|---|
| 3876 | do {
|
|---|
| 3877 | dot_prev();
|
|---|
| 3878 | dot_skip_over_ws();
|
|---|
| 3879 | } while (--cmdcnt > 0);
|
|---|
| 3880 | break;
|
|---|
| 3881 | #if ENABLE_FEATURE_VI_DOT_CMD
|
|---|
| 3882 | case '.': // .- repeat the last modifying command
|
|---|
| 3883 | // Stuff the last_modifying_cmd back into stdin
|
|---|
| 3884 | // and let it be re-executed.
|
|---|
| 3885 | if (lmc_len > 0) {
|
|---|
| 3886 | last_modifying_cmd[lmc_len] = 0;
|
|---|
| 3887 | ioq = ioq_start = xstrdup(last_modifying_cmd);
|
|---|
| 3888 | }
|
|---|
| 3889 | break;
|
|---|
| 3890 | #endif
|
|---|
| 3891 | #if ENABLE_FEATURE_VI_SEARCH
|
|---|
| 3892 | case '?': // /- search for a pattern
|
|---|
| 3893 | case '/': // /- search for a pattern
|
|---|
| 3894 | buf[0] = c;
|
|---|
| 3895 | buf[1] = '\0';
|
|---|
| 3896 | q = get_input_line(buf); // get input line- use "status line"
|
|---|
| 3897 | if (q[0] && !q[1]) {
|
|---|
| 3898 | if (last_search_pattern[0])
|
|---|
| 3899 | last_search_pattern[0] = c;
|
|---|
| 3900 | goto dc3; // if no pat re-use old pat
|
|---|
| 3901 | }
|
|---|
| 3902 | if (q[0]) { // strlen(q) > 1: new pat- save it and find
|
|---|
| 3903 | // there is a new pat
|
|---|
| 3904 | free(last_search_pattern);
|
|---|
| 3905 | last_search_pattern = xstrdup(q);
|
|---|
| 3906 | goto dc3; // now find the pattern
|
|---|
| 3907 | }
|
|---|
| 3908 | // user changed mind and erased the "/"- do nothing
|
|---|
| 3909 | break;
|
|---|
| 3910 | case 'N': // N- backward search for last pattern
|
|---|
| 3911 | dir = BACK; // assume BACKWARD search
|
|---|
| 3912 | p = dot - 1;
|
|---|
| 3913 | if (last_search_pattern[0] == '?') {
|
|---|
| 3914 | dir = FORWARD;
|
|---|
| 3915 | p = dot + 1;
|
|---|
| 3916 | }
|
|---|
| 3917 | goto dc4; // now search for pattern
|
|---|
| 3918 | break;
|
|---|
| 3919 | case 'n': // n- repeat search for last pattern
|
|---|
| 3920 | // search rest of text[] starting at next char
|
|---|
| 3921 | // if search fails return orignal "p" not the "p+1" address
|
|---|
| 3922 | do {
|
|---|
| 3923 | const char *msg;
|
|---|
| 3924 | dc3:
|
|---|
| 3925 | dir = FORWARD; // assume FORWARD search
|
|---|
| 3926 | p = dot + 1;
|
|---|
| 3927 | if (last_search_pattern[0] == '?') {
|
|---|
| 3928 | dir = BACK;
|
|---|
| 3929 | p = dot - 1;
|
|---|
| 3930 | }
|
|---|
| 3931 | dc4:
|
|---|
| 3932 | q = char_search(p, last_search_pattern + 1, dir, FULL);
|
|---|
| 3933 | if (q != NULL) {
|
|---|
| 3934 | dot = q; // good search, update "dot"
|
|---|
| 3935 | msg = NULL;
|
|---|
| 3936 | goto dc2;
|
|---|
| 3937 | }
|
|---|
| 3938 | // no pattern found between "dot" and "end"- continue at top
|
|---|
| 3939 | p = text;
|
|---|
| 3940 | if (dir == BACK) {
|
|---|
| 3941 | p = end - 1;
|
|---|
| 3942 | }
|
|---|
| 3943 | q = char_search(p, last_search_pattern + 1, dir, FULL);
|
|---|
| 3944 | if (q != NULL) { // found something
|
|---|
| 3945 | dot = q; // found new pattern- goto it
|
|---|
| 3946 | msg = "search hit BOTTOM, continuing at TOP";
|
|---|
| 3947 | if (dir == BACK) {
|
|---|
| 3948 | msg = "search hit TOP, continuing at BOTTOM";
|
|---|
| 3949 | }
|
|---|
| 3950 | } else {
|
|---|
| 3951 | msg = "Pattern not found";
|
|---|
| 3952 | }
|
|---|
| 3953 | dc2:
|
|---|
| 3954 | if (msg)
|
|---|
| 3955 | status_line_bold("%s", msg);
|
|---|
| 3956 | } while (--cmdcnt > 0);
|
|---|
| 3957 | break;
|
|---|
| 3958 | case '{': // {- move backward paragraph
|
|---|
| 3959 | q = char_search(dot, "\n\n", BACK, FULL);
|
|---|
| 3960 | if (q != NULL) { // found blank line
|
|---|
| 3961 | dot = next_line(q); // move to next blank line
|
|---|
| 3962 | }
|
|---|
| 3963 | break;
|
|---|
| 3964 | case '}': // }- move forward paragraph
|
|---|
| 3965 | q = char_search(dot, "\n\n", FORWARD, FULL);
|
|---|
| 3966 | if (q != NULL) { // found blank line
|
|---|
| 3967 | dot = next_line(q); // move to next blank line
|
|---|
| 3968 | }
|
|---|
| 3969 | break;
|
|---|
| 3970 | #endif /* FEATURE_VI_SEARCH */
|
|---|
| 3971 | case '0': // 0- goto beginning of line
|
|---|
| 3972 | case '1': // 1-
|
|---|
| 3973 | case '2': // 2-
|
|---|
| 3974 | case '3': // 3-
|
|---|
| 3975 | case '4': // 4-
|
|---|
| 3976 | case '5': // 5-
|
|---|
| 3977 | case '6': // 6-
|
|---|
| 3978 | case '7': // 7-
|
|---|
| 3979 | case '8': // 8-
|
|---|
| 3980 | case '9': // 9-
|
|---|
| 3981 | if (c == '0' && cmdcnt < 1) {
|
|---|
| 3982 | dot_begin(); // this was a standalone zero
|
|---|
| 3983 | } else {
|
|---|
| 3984 | cmdcnt = cmdcnt * 10 + (c - '0'); // this 0 is part of a number
|
|---|
| 3985 | }
|
|---|
| 3986 | break;
|
|---|
| 3987 | case ':': // :- the colon mode commands
|
|---|
| 3988 | p = get_input_line(":"); // get input line- use "status line"
|
|---|
| 3989 | colon(p); // execute the command
|
|---|
| 3990 | break;
|
|---|
| 3991 | case '<': // <- Left shift something
|
|---|
| 3992 | case '>': // >- Right shift something
|
|---|
| 3993 | cnt = count_lines(text, dot); // remember what line we are on
|
|---|
| 3994 | c1 = get_one_char(); // get the type of thing to delete
|
|---|
| 3995 | find_range(&p, &q, c1);
|
|---|
| 3996 | yank_delete(p, q, 1, YANKONLY, NO_UNDO); // save copy before change
|
|---|
| 3997 | p = begin_line(p);
|
|---|
| 3998 | q = end_line(q);
|
|---|
| 3999 | i = count_lines(p, q); // # of lines we are shifting
|
|---|
| 4000 | for ( ; i > 0; i--, p = next_line(p)) {
|
|---|
| 4001 | if (c == '<') {
|
|---|
| 4002 | // shift left- remove tab or 8 spaces
|
|---|
| 4003 | if (*p == '\t') {
|
|---|
| 4004 | // shrink buffer 1 char
|
|---|
| 4005 | text_hole_delete(p, p, NO_UNDO);
|
|---|
| 4006 | } else if (*p == ' ') {
|
|---|
| 4007 | // we should be calculating columns, not just SPACE
|
|---|
| 4008 | for (j = 0; *p == ' ' && j < tabstop; j++) {
|
|---|
| 4009 | text_hole_delete(p, p, NO_UNDO);
|
|---|
| 4010 | }
|
|---|
| 4011 | }
|
|---|
| 4012 | } else if (c == '>') {
|
|---|
| 4013 | // shift right -- add tab or 8 spaces
|
|---|
| 4014 | char_insert(p, '\t', ALLOW_UNDO);
|
|---|
| 4015 | }
|
|---|
| 4016 | }
|
|---|
| 4017 | dot = find_line(cnt); // what line were we on
|
|---|
| 4018 | dot_skip_over_ws();
|
|---|
| 4019 | end_cmd_q(); // stop adding to q
|
|---|
| 4020 | break;
|
|---|
| 4021 | case 'A': // A- append at e-o-l
|
|---|
| 4022 | dot_end(); // go to e-o-l
|
|---|
| 4023 | //**** fall through to ... 'a'
|
|---|
| 4024 | case 'a': // a- append after current char
|
|---|
| 4025 | if (*dot != '\n')
|
|---|
| 4026 | #ifndef ENABLE_BASIC_MULTI_CHAR_CODE
|
|---|
| 4027 | dot++;
|
|---|
| 4028 | #else
|
|---|
| 4029 | {
|
|---|
| 4030 | int code_size;
|
|---|
| 4031 | unsigned short tmp_code = Utf8_to_Utf16(dot, &code_size);
|
|---|
| 4032 | dot += code_size;
|
|---|
| 4033 | }
|
|---|
| 4034 | #endif
|
|---|
| 4035 | goto dc_i;
|
|---|
| 4036 | break;
|
|---|
| 4037 | case 'B': // B- back a blank-delimited Word
|
|---|
| 4038 | case 'E': // E- end of a blank-delimited word
|
|---|
| 4039 | case 'W': // W- forward a blank-delimited word
|
|---|
| 4040 | dir = FORWARD;
|
|---|
| 4041 | if (c == 'B')
|
|---|
| 4042 | dir = BACK;
|
|---|
| 4043 | do {
|
|---|
| 4044 | if (c == 'W' || isspace(dot[dir])) {
|
|---|
| 4045 | dot = skip_thing(dot, 1, dir, S_TO_WS);
|
|---|
| 4046 | dot = skip_thing(dot, 2, dir, S_OVER_WS);
|
|---|
| 4047 | }
|
|---|
| 4048 | if (c != 'W')
|
|---|
| 4049 | dot = skip_thing(dot, 1, dir, S_BEFORE_WS);
|
|---|
| 4050 | } while (--cmdcnt > 0);
|
|---|
| 4051 | break;
|
|---|
| 4052 | case 'C': // C- Change to e-o-l
|
|---|
| 4053 | case 'D': // D- delete to e-o-l
|
|---|
| 4054 | save_dot = dot;
|
|---|
| 4055 | dot = dollar_line(dot); // move to before NL
|
|---|
| 4056 | // copy text into a register and delete
|
|---|
| 4057 | dot = yank_delete(save_dot, dot, 0, YANKDEL, ALLOW_UNDO); // delete to e-o-l
|
|---|
| 4058 | if (c == 'C')
|
|---|
| 4059 | goto dc_i; // start inserting
|
|---|
| 4060 | #if ENABLE_FEATURE_VI_DOT_CMD
|
|---|
| 4061 | if (c == 'D')
|
|---|
| 4062 | end_cmd_q(); // stop adding to q
|
|---|
| 4063 | #endif
|
|---|
| 4064 | break;
|
|---|
| 4065 | case 'g': // 'gg' goto a line number (vim) (default: very first line)
|
|---|
| 4066 | c1 = get_one_char();
|
|---|
| 4067 | if (c1 != 'g') {
|
|---|
| 4068 | buf[0] = 'g';
|
|---|
| 4069 | // c1 < 0 if the key was special. Try "g<up-arrow>"
|
|---|
| 4070 | // TODO: if Unicode?
|
|---|
| 4071 | buf[1] = (c1 >= 0 ? c1 : '*');
|
|---|
| 4072 | buf[2] = '\0';
|
|---|
| 4073 | not_implemented(buf);
|
|---|
| 4074 | break;
|
|---|
| 4075 | }
|
|---|
| 4076 | if (cmdcnt == 0)
|
|---|
| 4077 | cmdcnt = 1;
|
|---|
| 4078 | /* fall through */
|
|---|
| 4079 | case 'G': // G- goto to a line number (default= E-O-F)
|
|---|
| 4080 | dot = end - 1; // assume E-O-F
|
|---|
| 4081 | if (cmdcnt > 0) {
|
|---|
| 4082 | dot = find_line(cmdcnt); // what line is #cmdcnt
|
|---|
| 4083 | }
|
|---|
| 4084 | dot_skip_over_ws();
|
|---|
| 4085 | break;
|
|---|
| 4086 | case 'H': // H- goto top line on screen
|
|---|
| 4087 | dot = screenbegin;
|
|---|
| 4088 | if (cmdcnt > (rows - 1)) {
|
|---|
| 4089 | cmdcnt = (rows - 1);
|
|---|
| 4090 | }
|
|---|
| 4091 | if (--cmdcnt > 0) {
|
|---|
| 4092 | do_cmd('+');
|
|---|
| 4093 | }
|
|---|
| 4094 | dot_skip_over_ws();
|
|---|
| 4095 | break;
|
|---|
| 4096 | case 'I': // I- insert before first non-blank
|
|---|
| 4097 | dot_begin(); // 0
|
|---|
| 4098 | dot_skip_over_ws();
|
|---|
| 4099 | //**** fall through to ... 'i'
|
|---|
| 4100 | case 'i': // i- insert before current char
|
|---|
| 4101 | case KEYCODE_INSERT: // Cursor Key Insert
|
|---|
| 4102 | dc_i:
|
|---|
| 4103 | cmd_mode = 1; // start inserting
|
|---|
| 4104 | undo_queue_commit(); // commit queue when cmd_mode changes
|
|---|
| 4105 | break;
|
|---|
| 4106 | case 'J': // J- join current and next lines together
|
|---|
| 4107 | do {
|
|---|
| 4108 | dot_end(); // move to NL
|
|---|
| 4109 | if (dot < end - 1) { // make sure not last char in text[]
|
|---|
| 4110 | #if ENABLE_FEATURE_VI_UNDO
|
|---|
| 4111 | undo_push(dot, 1, UNDO_DEL);
|
|---|
| 4112 | *dot++ = ' '; // replace NL with space
|
|---|
| 4113 | undo_push((dot - 1), 1, UNDO_INS_CHAIN);
|
|---|
| 4114 | #else
|
|---|
| 4115 | *dot++ = ' ';
|
|---|
| 4116 | modified_count++;
|
|---|
| 4117 | #endif
|
|---|
| 4118 | while (isblank(*dot)) { // delete leading WS
|
|---|
| 4119 | text_hole_delete(dot, dot, ALLOW_UNDO_CHAIN);
|
|---|
| 4120 | }
|
|---|
| 4121 | }
|
|---|
| 4122 | } while (--cmdcnt > 0);
|
|---|
| 4123 | end_cmd_q(); // stop adding to q
|
|---|
| 4124 | break;
|
|---|
| 4125 | case 'L': // L- goto bottom line on screen
|
|---|
| 4126 | dot = end_screen();
|
|---|
| 4127 | if (cmdcnt > (rows - 1)) {
|
|---|
| 4128 | cmdcnt = (rows - 1);
|
|---|
| 4129 | }
|
|---|
| 4130 | if (--cmdcnt > 0) {
|
|---|
| 4131 | do_cmd('-');
|
|---|
| 4132 | }
|
|---|
| 4133 | dot_begin();
|
|---|
| 4134 | dot_skip_over_ws();
|
|---|
| 4135 | break;
|
|---|
| 4136 | case 'M': // M- goto middle line on screen
|
|---|
| 4137 | dot = screenbegin;
|
|---|
| 4138 | for (cnt = 0; cnt < (rows-1) / 2; cnt++)
|
|---|
| 4139 | dot = next_line(dot);
|
|---|
| 4140 | break;
|
|---|
| 4141 | case 'O': // O- open a empty line above
|
|---|
| 4142 | // 0i\n ESC -i
|
|---|
| 4143 | p = begin_line(dot);
|
|---|
| 4144 | if (p[-1] == '\n') {
|
|---|
| 4145 | dot_prev();
|
|---|
| 4146 | case 'o': // o- open a empty line below; Yes, I know it is in the middle of the "if (..."
|
|---|
| 4147 | dot_end();
|
|---|
| 4148 | dot = char_insert(dot, '\n', ALLOW_UNDO);
|
|---|
| 4149 | } else {
|
|---|
| 4150 | dot_begin(); // 0
|
|---|
| 4151 | dot = char_insert(dot, '\n', ALLOW_UNDO); // i\n ESC
|
|---|
| 4152 | dot_prev(); // -
|
|---|
| 4153 | }
|
|---|
| 4154 | goto dc_i;
|
|---|
| 4155 | break;
|
|---|
| 4156 | case 'R': // R- continuous Replace char
|
|---|
| 4157 | dc5:
|
|---|
| 4158 | cmd_mode = 2;
|
|---|
| 4159 | undo_queue_commit();
|
|---|
| 4160 | break;
|
|---|
| 4161 | case KEYCODE_DELETE:
|
|---|
| 4162 | if (dot < end - 1)
|
|---|
| 4163 | dot = yank_delete(dot, dot, 1, YANKDEL, ALLOW_UNDO);
|
|---|
| 4164 | break;
|
|---|
| 4165 | case 'X': // X- delete char before dot
|
|---|
| 4166 | case 'x': // x- delete the current char
|
|---|
| 4167 | case 's': // s- substitute the current char
|
|---|
| 4168 | dir = 0;
|
|---|
| 4169 | if (c == 'X')
|
|---|
| 4170 | dir = -1;
|
|---|
| 4171 | do {
|
|---|
| 4172 | if (dot[dir] != '\n') {
|
|---|
| 4173 | if (c == 'X')
|
|---|
| 4174 | dot--; // delete prev char
|
|---|
| 4175 | dot = yank_delete(dot, dot, 0, YANKDEL, ALLOW_UNDO); // delete char
|
|---|
| 4176 | }
|
|---|
| 4177 | } while (--cmdcnt > 0);
|
|---|
| 4178 | end_cmd_q(); // stop adding to q
|
|---|
| 4179 | if (c == 's')
|
|---|
| 4180 | goto dc_i; // start inserting
|
|---|
| 4181 | break;
|
|---|
| 4182 | case 'Z': // Z- if modified, {write}; exit
|
|---|
| 4183 | // ZZ means to save file (if necessary), then exit
|
|---|
| 4184 | c1 = get_one_char();
|
|---|
| 4185 | if (c1 != 'Z') {
|
|---|
| 4186 | indicate_error();
|
|---|
| 4187 | break;
|
|---|
| 4188 | }
|
|---|
| 4189 | if (modified_count) {
|
|---|
| 4190 | if (ENABLE_FEATURE_VI_READONLY && readonly_mode) {
|
|---|
| 4191 | status_line_bold("'%s' is read only", current_filename);
|
|---|
| 4192 | break;
|
|---|
| 4193 | }
|
|---|
| 4194 | cnt = file_write(current_filename, text, end - 1);
|
|---|
| 4195 | if (cnt < 0) {
|
|---|
| 4196 | if (cnt == -1)
|
|---|
| 4197 | status_line_bold("Write error: %s", strerror(errno));
|
|---|
| 4198 | } else if (cnt == (end - 1 - text + 1)) {
|
|---|
| 4199 | editing = 0;
|
|---|
| 4200 | }
|
|---|
| 4201 | } else {
|
|---|
| 4202 | editing = 0;
|
|---|
| 4203 | }
|
|---|
| 4204 | break;
|
|---|
| 4205 | case '^': // ^- move to first non-blank on line
|
|---|
| 4206 | dot_begin();
|
|---|
| 4207 | dot_skip_over_ws();
|
|---|
| 4208 | break;
|
|---|
| 4209 | case 'b': // b- back a word
|
|---|
| 4210 | case 'e': // e- end of word
|
|---|
| 4211 | dir = FORWARD;
|
|---|
| 4212 | if (c == 'b')
|
|---|
| 4213 | dir = BACK;
|
|---|
| 4214 | do {
|
|---|
| 4215 | if ((dot + dir) < text || (dot + dir) > end - 1)
|
|---|
| 4216 | break;
|
|---|
| 4217 | dot += dir;
|
|---|
| 4218 | if (isspace(*dot)) {
|
|---|
| 4219 | dot = skip_thing(dot, (c == 'e') ? 2 : 1, dir, S_OVER_WS);
|
|---|
| 4220 | }
|
|---|
| 4221 | if (isalnum(*dot) || *dot == '_') {
|
|---|
| 4222 | dot = skip_thing(dot, 1, dir, S_END_ALNUM);
|
|---|
| 4223 | } else if (ispunct(*dot)) {
|
|---|
| 4224 | dot = skip_thing(dot, 1, dir, S_END_PUNCT);
|
|---|
| 4225 | }
|
|---|
| 4226 | } while (--cmdcnt > 0);
|
|---|
| 4227 | break;
|
|---|
| 4228 | case 'c': // c- change something
|
|---|
| 4229 | case 'd': // d- delete something
|
|---|
| 4230 | #if ENABLE_FEATURE_VI_YANKMARK
|
|---|
| 4231 | case 'y': // y- yank something
|
|---|
| 4232 | case 'Y': // Y- Yank a line
|
|---|
| 4233 | #endif
|
|---|
| 4234 | {
|
|---|
| 4235 | int yf, ml, whole = 0;
|
|---|
| 4236 | yf = YANKDEL; // assume either "c" or "d"
|
|---|
| 4237 | #if ENABLE_FEATURE_VI_YANKMARK
|
|---|
| 4238 | if (c == 'y' || c == 'Y')
|
|---|
| 4239 | yf = YANKONLY;
|
|---|
| 4240 | #endif
|
|---|
| 4241 | c1 = 'y';
|
|---|
| 4242 | if (c != 'Y')
|
|---|
| 4243 | c1 = get_one_char(); // get the type of thing to delete
|
|---|
| 4244 | // determine range, and whether it spans lines
|
|---|
| 4245 | ml = find_range(&p, &q, c1);
|
|---|
| 4246 | place_cursor(0, 0);
|
|---|
| 4247 | if (c1 == 27) { // ESC- user changed mind and wants out
|
|---|
| 4248 | c = c1 = 27; // Escape- do nothing
|
|---|
| 4249 | } else if (strchr("wW", c1)) {
|
|---|
| 4250 | if (c == 'c') {
|
|---|
| 4251 | // don't include trailing WS as part of word
|
|---|
| 4252 | while (isblank(*q)) {
|
|---|
| 4253 | if (q <= text || q[-1] == '\n')
|
|---|
| 4254 | break;
|
|---|
| 4255 | q--;
|
|---|
| 4256 | }
|
|---|
| 4257 | }
|
|---|
| 4258 | dot = yank_delete(p, q, ml, yf, ALLOW_UNDO); // delete word
|
|---|
| 4259 | } else if (strchr("^0bBeEft%$ lh\b\177", c1)) {
|
|---|
| 4260 | // partial line copy text into a register and delete
|
|---|
| 4261 | dot = yank_delete(p, q, ml, yf, ALLOW_UNDO); // delete word
|
|---|
| 4262 | } else if (strchr("cdykjHL+-{}\r\n", c1)) {
|
|---|
| 4263 | // whole line copy text into a register and delete
|
|---|
| 4264 | dot = yank_delete(p, q, ml, yf, ALLOW_UNDO); // delete lines
|
|---|
| 4265 | whole = 1;
|
|---|
| 4266 | } else {
|
|---|
| 4267 | // could not recognize object
|
|---|
| 4268 | c = c1 = 27; // error-
|
|---|
| 4269 | ml = 0;
|
|---|
| 4270 | indicate_error();
|
|---|
| 4271 | }
|
|---|
| 4272 | if (ml && whole) {
|
|---|
| 4273 | if (c == 'c') {
|
|---|
| 4274 | dot = char_insert(dot, '\n', ALLOW_UNDO_CHAIN);
|
|---|
| 4275 | // on the last line of file don't move to prev line
|
|---|
| 4276 | if (whole && dot != (end-1)) {
|
|---|
| 4277 | dot_prev();
|
|---|
| 4278 | }
|
|---|
| 4279 | } else if (c == 'd') {
|
|---|
| 4280 | dot_begin();
|
|---|
| 4281 | dot_skip_over_ws();
|
|---|
| 4282 | }
|
|---|
| 4283 | }
|
|---|
| 4284 | if (c1 != 27) {
|
|---|
| 4285 | // if CHANGING, not deleting, start inserting after the delete
|
|---|
| 4286 | if (c == 'c') {
|
|---|
| 4287 | strcpy(buf, "Change");
|
|---|
| 4288 | goto dc_i; // start inserting
|
|---|
| 4289 | }
|
|---|
| 4290 | if (c == 'd') {
|
|---|
| 4291 | strcpy(buf, "Delete");
|
|---|
| 4292 | }
|
|---|
| 4293 | #if ENABLE_FEATURE_VI_YANKMARK
|
|---|
| 4294 | if (c == 'y' || c == 'Y') {
|
|---|
| 4295 | strcpy(buf, "Yank");
|
|---|
| 4296 | }
|
|---|
| 4297 | p = reg[YDreg];
|
|---|
| 4298 | q = p + strlen(p);
|
|---|
| 4299 | for (cnt = 0; p <= q; p++) {
|
|---|
| 4300 | if (*p == '\n')
|
|---|
| 4301 | cnt++;
|
|---|
| 4302 | }
|
|---|
| 4303 | status_line("%s %d lines (%d chars) using [%c]",
|
|---|
| 4304 | buf, cnt, strlen(reg[YDreg]), what_reg());
|
|---|
| 4305 | #endif
|
|---|
| 4306 | end_cmd_q(); // stop adding to q
|
|---|
| 4307 | }
|
|---|
| 4308 | break;
|
|---|
| 4309 | }
|
|---|
| 4310 | case 'k': // k- goto prev line, same col
|
|---|
| 4311 | case KEYCODE_UP: // cursor key Up
|
|---|
| 4312 | do {
|
|---|
| 4313 | dot_prev();
|
|---|
| 4314 | dot = move_to_col(dot, ccol + offset); // try stay in same col
|
|---|
| 4315 | } while (--cmdcnt > 0);
|
|---|
| 4316 | break;
|
|---|
| 4317 | case 'r': // r- replace the current char with user input
|
|---|
| 4318 | c1 = get_one_char(); // get the replacement char
|
|---|
| 4319 | if (*dot != '\n') {
|
|---|
| 4320 | #if ENABLE_FEATURE_VI_UNDO
|
|---|
| 4321 | undo_push(dot, 1, UNDO_DEL);
|
|---|
| 4322 | *dot = c1;
|
|---|
| 4323 | undo_push(dot, 1, UNDO_INS_CHAIN);
|
|---|
| 4324 | #else
|
|---|
| 4325 | *dot = c1;
|
|---|
| 4326 | modified_count++;
|
|---|
| 4327 | #endif
|
|---|
| 4328 | }
|
|---|
| 4329 | end_cmd_q(); // stop adding to q
|
|---|
| 4330 | break;
|
|---|
| 4331 | case 't': // t- move to char prior to next x
|
|---|
| 4332 | last_forward_char = get_one_char();
|
|---|
| 4333 | do_cmd(';');
|
|---|
| 4334 | if (*dot == last_forward_char)
|
|---|
| 4335 | dot_left();
|
|---|
| 4336 | last_forward_char = 0;
|
|---|
| 4337 | break;
|
|---|
| 4338 | case 'w': // w- forward a word
|
|---|
| 4339 | do {
|
|---|
| 4340 | if (isalnum(*dot) || *dot == '_') { // we are on ALNUM
|
|---|
| 4341 | dot = skip_thing(dot, 1, FORWARD, S_END_ALNUM);
|
|---|
| 4342 | } else if (ispunct(*dot)) { // we are on PUNCT
|
|---|
| 4343 | dot = skip_thing(dot, 1, FORWARD, S_END_PUNCT);
|
|---|
| 4344 | }
|
|---|
| 4345 | if (dot < end - 1)
|
|---|
| 4346 | dot++; // move over word
|
|---|
| 4347 | if (isspace(*dot)) {
|
|---|
| 4348 | dot = skip_thing(dot, 2, FORWARD, S_OVER_WS);
|
|---|
| 4349 | }
|
|---|
| 4350 | } while (--cmdcnt > 0);
|
|---|
| 4351 | break;
|
|---|
| 4352 | case 'z': // z-
|
|---|
| 4353 | c1 = get_one_char(); // get the replacement char
|
|---|
| 4354 | cnt = 0;
|
|---|
| 4355 | if (c1 == '.')
|
|---|
| 4356 | cnt = (rows - 2) / 2; // put dot at center
|
|---|
| 4357 | if (c1 == '-')
|
|---|
| 4358 | cnt = rows - 2; // put dot at bottom
|
|---|
| 4359 | screenbegin = begin_line(dot); // start dot at top
|
|---|
| 4360 | dot_scroll(cnt, -1);
|
|---|
| 4361 | break;
|
|---|
| 4362 | case '|': // |- move to column "cmdcnt"
|
|---|
| 4363 | dot = move_to_col(dot, cmdcnt - 1); // try to move to column
|
|---|
| 4364 | break;
|
|---|
| 4365 | case '~': // ~- flip the case of letters a-z -> A-Z
|
|---|
| 4366 | do {
|
|---|
| 4367 | #if ENABLE_FEATURE_VI_UNDO
|
|---|
| 4368 | if (islower(*dot)) {
|
|---|
| 4369 | undo_push(dot, 1, UNDO_DEL);
|
|---|
| 4370 | *dot = toupper(*dot);
|
|---|
| 4371 | undo_push(dot, 1, UNDO_INS_CHAIN);
|
|---|
| 4372 | } else if (isupper(*dot)) {
|
|---|
| 4373 | undo_push(dot, 1, UNDO_DEL);
|
|---|
| 4374 | *dot = tolower(*dot);
|
|---|
| 4375 | undo_push(dot, 1, UNDO_INS_CHAIN);
|
|---|
| 4376 | }
|
|---|
| 4377 | #else
|
|---|
| 4378 | if (islower(*dot)) {
|
|---|
| 4379 | *dot = toupper(*dot);
|
|---|
| 4380 | modified_count++;
|
|---|
| 4381 | } else if (isupper(*dot)) {
|
|---|
| 4382 | *dot = tolower(*dot);
|
|---|
| 4383 | modified_count++;
|
|---|
| 4384 | }
|
|---|
| 4385 | #endif
|
|---|
| 4386 | dot_right();
|
|---|
| 4387 | } while (--cmdcnt > 0);
|
|---|
| 4388 | end_cmd_q(); // stop adding to q
|
|---|
| 4389 | break;
|
|---|
| 4390 | //----- The Cursor and Function Keys -----------------------------
|
|---|
| 4391 | case KEYCODE_HOME: // Cursor Key Home
|
|---|
| 4392 | dot_begin();
|
|---|
| 4393 | break;
|
|---|
| 4394 | // The Fn keys could point to do_macro which could translate them
|
|---|
| 4395 | #if 0
|
|---|
| 4396 | case KEYCODE_FUN1: // Function Key F1
|
|---|
| 4397 | case KEYCODE_FUN2: // Function Key F2
|
|---|
| 4398 | case KEYCODE_FUN3: // Function Key F3
|
|---|
| 4399 | case KEYCODE_FUN4: // Function Key F4
|
|---|
| 4400 | case KEYCODE_FUN5: // Function Key F5
|
|---|
| 4401 | case KEYCODE_FUN6: // Function Key F6
|
|---|
| 4402 | case KEYCODE_FUN7: // Function Key F7
|
|---|
| 4403 | case KEYCODE_FUN8: // Function Key F8
|
|---|
| 4404 | case KEYCODE_FUN9: // Function Key F9
|
|---|
| 4405 | case KEYCODE_FUN10: // Function Key F10
|
|---|
| 4406 | case KEYCODE_FUN11: // Function Key F11
|
|---|
| 4407 | case KEYCODE_FUN12: // Function Key F12
|
|---|
| 4408 | break;
|
|---|
| 4409 | #endif
|
|---|
| 4410 | }
|
|---|
| 4411 |
|
|---|
| 4412 | dc1:
|
|---|
| 4413 | // if text[] just became empty, add back an empty line
|
|---|
| 4414 | if (end == text) {
|
|---|
| 4415 | char_insert(text, '\n', NO_UNDO); // start empty buf with dummy line
|
|---|
| 4416 | dot = text;
|
|---|
| 4417 | }
|
|---|
| 4418 | // it is OK for dot to exactly equal to end, otherwise check dot validity
|
|---|
| 4419 | if (dot != end) {
|
|---|
| 4420 | dot = bound_dot(dot); // make sure "dot" is valid
|
|---|
| 4421 | }
|
|---|
| 4422 | #if ENABLE_FEATURE_VI_YANKMARK
|
|---|
| 4423 | check_context(c); // update the current context
|
|---|
| 4424 | #endif
|
|---|
| 4425 |
|
|---|
| 4426 | if (!isdigit(c))
|
|---|
| 4427 | cmdcnt = 0; // cmd was not a number, reset cmdcnt
|
|---|
| 4428 | cnt = dot - begin_line(dot);
|
|---|
| 4429 | // Try to stay off of the Newline
|
|---|
| 4430 | if (*dot == '\n' && cnt > 0 && cmd_mode == 0)
|
|---|
| 4431 | #ifndef ENABLE_BASIC_MULTI_CHAR_CODE
|
|---|
| 4432 | dot--;
|
|---|
| 4433 | #else
|
|---|
| 4434 | dot -= bs_char_count(text, dot - text - 1);
|
|---|
| 4435 | #endif
|
|---|
| 4436 | }
|
|---|
| 4437 |
|
|---|
| 4438 | /* NB! the CRASHME code is unmaintained, and doesn't currently build */
|
|---|
| 4439 | #if ENABLE_FEATURE_VI_CRASHME
|
|---|
| 4440 | static int totalcmds = 0;
|
|---|
| 4441 | static int Mp = 85; // Movement command Probability
|
|---|
| 4442 | static int Np = 90; // Non-movement command Probability
|
|---|
| 4443 | static int Dp = 96; // Delete command Probability
|
|---|
| 4444 | static int Ip = 97; // Insert command Probability
|
|---|
| 4445 | static int Yp = 98; // Yank command Probability
|
|---|
| 4446 | static int Pp = 99; // Put command Probability
|
|---|
| 4447 | static int M = 0, N = 0, I = 0, D = 0, Y = 0, P = 0, U = 0;
|
|---|
| 4448 | static const char chars[20] = "\t012345 abcdABCD-=.$";
|
|---|
| 4449 | static const char *const words[20] = {
|
|---|
| 4450 | "this", "is", "a", "test",
|
|---|
| 4451 | "broadcast", "the", "emergency", "of",
|
|---|
| 4452 | "system", "quick", "brown", "fox",
|
|---|
| 4453 | "jumped", "over", "lazy", "dogs",
|
|---|
| 4454 | "back", "January", "Febuary", "March"
|
|---|
| 4455 | };
|
|---|
| 4456 | static const char *const lines[20] = {
|
|---|
| 4457 | "You should have received a copy of the GNU General Public License\n",
|
|---|
| 4458 | "char c, cm, *cmd, *cmd1;\n",
|
|---|
| 4459 | "generate a command by percentages\n",
|
|---|
| 4460 | "Numbers may be typed as a prefix to some commands.\n",
|
|---|
| 4461 | "Quit, discarding changes!\n",
|
|---|
| 4462 | "Forced write, if permission originally not valid.\n",
|
|---|
| 4463 | "In general, any ex or ed command (such as substitute or delete).\n",
|
|---|
| 4464 | "I have tickets available for the Blazers vs LA Clippers for Monday, Janurary 1 at 1:00pm.\n",
|
|---|
| 4465 | "Please get w/ me and I will go over it with you.\n",
|
|---|
| 4466 | "The following is a list of scheduled, committed changes.\n",
|
|---|
| 4467 | "1. Launch Norton Antivirus (Start, Programs, Norton Antivirus)\n",
|
|---|
| 4468 | "Reminder....Town Meeting in Central Perk cafe today at 3:00pm.\n",
|
|---|
| 4469 | "Any question about transactions please contact Sterling Huxley.\n",
|
|---|
| 4470 | "I will try to get back to you by Friday, December 31.\n",
|
|---|
| 4471 | "This Change will be implemented on Friday.\n",
|
|---|
| 4472 | "Let me know if you have problems accessing this;\n",
|
|---|
| 4473 | "Sterling Huxley recently added you to the access list.\n",
|
|---|
| 4474 | "Would you like to go to lunch?\n",
|
|---|
| 4475 | "The last command will be automatically run.\n",
|
|---|
| 4476 | "This is too much english for a computer geek.\n",
|
|---|
| 4477 | };
|
|---|
| 4478 | static char *multilines[20] = {
|
|---|
| 4479 | "You should have received a copy of the GNU General Public License\n",
|
|---|
| 4480 | "char c, cm, *cmd, *cmd1;\n",
|
|---|
| 4481 | "generate a command by percentages\n",
|
|---|
| 4482 | "Numbers may be typed as a prefix to some commands.\n",
|
|---|
| 4483 | "Quit, discarding changes!\n",
|
|---|
| 4484 | "Forced write, if permission originally not valid.\n",
|
|---|
| 4485 | "In general, any ex or ed command (such as substitute or delete).\n",
|
|---|
| 4486 | "I have tickets available for the Blazers vs LA Clippers for Monday, Janurary 1 at 1:00pm.\n",
|
|---|
| 4487 | "Please get w/ me and I will go over it with you.\n",
|
|---|
| 4488 | "The following is a list of scheduled, committed changes.\n",
|
|---|
| 4489 | "1. Launch Norton Antivirus (Start, Programs, Norton Antivirus)\n",
|
|---|
| 4490 | "Reminder....Town Meeting in Central Perk cafe today at 3:00pm.\n",
|
|---|
| 4491 | "Any question about transactions please contact Sterling Huxley.\n",
|
|---|
| 4492 | "I will try to get back to you by Friday, December 31.\n",
|
|---|
| 4493 | "This Change will be implemented on Friday.\n",
|
|---|
| 4494 | "Let me know if you have problems accessing this;\n",
|
|---|
| 4495 | "Sterling Huxley recently added you to the access list.\n",
|
|---|
| 4496 | "Would you like to go to lunch?\n",
|
|---|
| 4497 | "The last command will be automatically run.\n",
|
|---|
| 4498 | "This is too much english for a computer geek.\n",
|
|---|
| 4499 | };
|
|---|
| 4500 |
|
|---|
| 4501 | // create a random command to execute
|
|---|
| 4502 | static void crash_dummy()
|
|---|
| 4503 | {
|
|---|
| 4504 | static int sleeptime; // how long to pause between commands
|
|---|
| 4505 | char c, cm, *cmd, *cmd1;
|
|---|
| 4506 | int i, cnt, thing, rbi, startrbi, percent;
|
|---|
| 4507 |
|
|---|
| 4508 | // "dot" movement commands
|
|---|
| 4509 | cmd1 = " \n\r\002\004\005\006\025\0310^$-+wWeEbBhjklHL";
|
|---|
| 4510 |
|
|---|
| 4511 | // is there already a command running?
|
|---|
| 4512 | if (readbuffer[0] > 0)
|
|---|
| 4513 | goto cd1;
|
|---|
| 4514 | cd0:
|
|---|
| 4515 | readbuffer[0] = 'X';
|
|---|
| 4516 | startrbi = rbi = 1;
|
|---|
| 4517 | sleeptime = 0; // how long to pause between commands
|
|---|
| 4518 | memset(readbuffer, '\0', sizeof(readbuffer));
|
|---|
| 4519 | // generate a command by percentages
|
|---|
| 4520 | percent = (int) lrand48() % 100; // get a number from 0-99
|
|---|
| 4521 | if (percent < Mp) { // Movement commands
|
|---|
| 4522 | // available commands
|
|---|
| 4523 | cmd = cmd1;
|
|---|
| 4524 | M++;
|
|---|
| 4525 | } else if (percent < Np) { // non-movement commands
|
|---|
| 4526 | cmd = "mz<>\'\""; // available commands
|
|---|
| 4527 | N++;
|
|---|
| 4528 | } else if (percent < Dp) { // Delete commands
|
|---|
| 4529 | cmd = "dx"; // available commands
|
|---|
| 4530 | D++;
|
|---|
| 4531 | } else if (percent < Ip) { // Inset commands
|
|---|
| 4532 | cmd = "iIaAsrJ"; // available commands
|
|---|
| 4533 | I++;
|
|---|
| 4534 | } else if (percent < Yp) { // Yank commands
|
|---|
| 4535 | cmd = "yY"; // available commands
|
|---|
| 4536 | Y++;
|
|---|
| 4537 | } else if (percent < Pp) { // Put commands
|
|---|
| 4538 | cmd = "pP"; // available commands
|
|---|
| 4539 | P++;
|
|---|
| 4540 | } else {
|
|---|
| 4541 | // We do not know how to handle this command, try again
|
|---|
| 4542 | U++;
|
|---|
| 4543 | goto cd0;
|
|---|
| 4544 | }
|
|---|
| 4545 | // randomly pick one of the available cmds from "cmd[]"
|
|---|
| 4546 | i = (int) lrand48() % strlen(cmd);
|
|---|
| 4547 | cm = cmd[i];
|
|---|
| 4548 | if (strchr(":\024", cm))
|
|---|
| 4549 | goto cd0; // dont allow colon or ctrl-T commands
|
|---|
| 4550 | readbuffer[rbi++] = cm; // put cmd into input buffer
|
|---|
| 4551 |
|
|---|
| 4552 | // now we have the command-
|
|---|
| 4553 | // there are 1, 2, and multi char commands
|
|---|
| 4554 | // find out which and generate the rest of command as necessary
|
|---|
| 4555 | if (strchr("dmryz<>\'\"", cm)) { // 2-char commands
|
|---|
| 4556 | cmd1 = " \n\r0$^-+wWeEbBhjklHL";
|
|---|
| 4557 | if (cm == 'm' || cm == '\'' || cm == '\"') { // pick a reg[]
|
|---|
| 4558 | cmd1 = "abcdefghijklmnopqrstuvwxyz";
|
|---|
| 4559 | }
|
|---|
| 4560 | thing = (int) lrand48() % strlen(cmd1); // pick a movement command
|
|---|
| 4561 | c = cmd1[thing];
|
|---|
| 4562 | readbuffer[rbi++] = c; // add movement to input buffer
|
|---|
| 4563 | }
|
|---|
| 4564 | if (strchr("iIaAsc", cm)) { // multi-char commands
|
|---|
| 4565 | if (cm == 'c') {
|
|---|
| 4566 | // change some thing
|
|---|
| 4567 | thing = (int) lrand48() % strlen(cmd1); // pick a movement command
|
|---|
| 4568 | c = cmd1[thing];
|
|---|
| 4569 | readbuffer[rbi++] = c; // add movement to input buffer
|
|---|
| 4570 | }
|
|---|
| 4571 | thing = (int) lrand48() % 4; // what thing to insert
|
|---|
| 4572 | cnt = (int) lrand48() % 10; // how many to insert
|
|---|
| 4573 | for (i = 0; i < cnt; i++) {
|
|---|
| 4574 | if (thing == 0) { // insert chars
|
|---|
| 4575 | readbuffer[rbi++] = chars[((int) lrand48() % strlen(chars))];
|
|---|
| 4576 | } else if (thing == 1) { // insert words
|
|---|
| 4577 | strcat(readbuffer, words[(int) lrand48() % 20]);
|
|---|
| 4578 | strcat(readbuffer, " ");
|
|---|
| 4579 | sleeptime = 0; // how fast to type
|
|---|
| 4580 | } else if (thing == 2) { // insert lines
|
|---|
| 4581 | strcat(readbuffer, lines[(int) lrand48() % 20]);
|
|---|
| 4582 | sleeptime = 0; // how fast to type
|
|---|
| 4583 | } else { // insert multi-lines
|
|---|
| 4584 | strcat(readbuffer, multilines[(int) lrand48() % 20]);
|
|---|
| 4585 | sleeptime = 0; // how fast to type
|
|---|
| 4586 | }
|
|---|
| 4587 | }
|
|---|
| 4588 | strcat(readbuffer, "\033");
|
|---|
| 4589 | }
|
|---|
| 4590 | readbuffer[0] = strlen(readbuffer + 1);
|
|---|
| 4591 | cd1:
|
|---|
| 4592 | totalcmds++;
|
|---|
| 4593 | if (sleeptime > 0)
|
|---|
| 4594 | mysleep(sleeptime); // sleep 1/100 sec
|
|---|
| 4595 | }
|
|---|
| 4596 |
|
|---|
| 4597 | // test to see if there are any errors
|
|---|
| 4598 | static void crash_test()
|
|---|
| 4599 | {
|
|---|
| 4600 | static time_t oldtim;
|
|---|
| 4601 |
|
|---|
| 4602 | time_t tim;
|
|---|
| 4603 | char d[2], msg[80];
|
|---|
| 4604 |
|
|---|
| 4605 | msg[0] = '\0';
|
|---|
| 4606 | if (end < text) {
|
|---|
| 4607 | strcat(msg, "end<text ");
|
|---|
| 4608 | }
|
|---|
| 4609 | if (end > textend) {
|
|---|
| 4610 | strcat(msg, "end>textend ");
|
|---|
| 4611 | }
|
|---|
| 4612 | if (dot < text) {
|
|---|
| 4613 | strcat(msg, "dot<text ");
|
|---|
| 4614 | }
|
|---|
| 4615 | if (dot > end) {
|
|---|
| 4616 | strcat(msg, "dot>end ");
|
|---|
| 4617 | }
|
|---|
| 4618 | if (screenbegin < text) {
|
|---|
| 4619 | strcat(msg, "screenbegin<text ");
|
|---|
| 4620 | }
|
|---|
| 4621 | if (screenbegin > end - 1) {
|
|---|
| 4622 | strcat(msg, "screenbegin>end-1 ");
|
|---|
| 4623 | }
|
|---|
| 4624 |
|
|---|
| 4625 | if (msg[0]) {
|
|---|
| 4626 | printf("\n\n%d: \'%c\' %s\n\n\n%s[Hit return to continue]%s",
|
|---|
| 4627 | totalcmds, last_input_char, msg, ESC_BOLD_TEXT, ESC_NORM_TEXT);
|
|---|
| 4628 | fflush_all();
|
|---|
| 4629 | while (safe_read(STDIN_FILENO, d, 1) > 0) {
|
|---|
| 4630 | if (d[0] == '\n' || d[0] == '\r')
|
|---|
| 4631 | break;
|
|---|
| 4632 | }
|
|---|
| 4633 | }
|
|---|
| 4634 | tim = time(NULL);
|
|---|
| 4635 | if (tim >= (oldtim + 3)) {
|
|---|
| 4636 | sprintf(status_buffer,
|
|---|
| 4637 | "Tot=%d: M=%d N=%d I=%d D=%d Y=%d P=%d U=%d size=%d",
|
|---|
| 4638 | totalcmds, M, N, I, D, Y, P, U, end - text + 1);
|
|---|
| 4639 | oldtim = tim;
|
|---|
| 4640 | }
|
|---|
| 4641 | }
|
|---|
| 4642 | #endif
|
|---|
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