1 | /* vi: set sw=4 ts=4: */
|
---|
2 | /*
|
---|
3 | * tiny vi.c: A small 'vi' clone
|
---|
4 | * Copyright (C) 2000, 2001 Sterling Huxley <sterling@europa.com>
|
---|
5 | *
|
---|
6 | * Licensed under GPLv2 or later, see file LICENSE in this source tree.
|
---|
7 | */
|
---|
8 |
|
---|
9 | /*
|
---|
10 | * Things To Do:
|
---|
11 | * EXINIT
|
---|
12 | * $HOME/.exrc and ./.exrc
|
---|
13 | * add magic to search /foo.*bar
|
---|
14 | * add :help command
|
---|
15 | * :map macros
|
---|
16 | * if mark[] values were line numbers rather than pointers
|
---|
17 | * it would be easier to change the mark when add/delete lines
|
---|
18 | * More intelligence in refresh()
|
---|
19 | * ":r !cmd" and "!cmd" to filter text through an external command
|
---|
20 | * An "ex" line oriented mode- maybe using "cmdedit"
|
---|
21 | */
|
---|
22 |
|
---|
23 | //config:config VI
|
---|
24 | //config: bool "vi"
|
---|
25 | //config: default y
|
---|
26 | //config: help
|
---|
27 | //config: 'vi' is a text editor. More specifically, it is the One True
|
---|
28 | //config: text editor <grin>. It does, however, have a rather steep
|
---|
29 | //config: learning curve. If you are not already comfortable with 'vi'
|
---|
30 | //config: you may wish to use something else.
|
---|
31 | //config:
|
---|
32 | //config:config FEATURE_VI_MAX_LEN
|
---|
33 | //config: int "Maximum screen width in vi"
|
---|
34 | //config: range 256 16384
|
---|
35 | //config: default 4096
|
---|
36 | //config: depends on VI
|
---|
37 | //config: help
|
---|
38 | //config: Contrary to what you may think, this is not eating much.
|
---|
39 | //config: Make it smaller than 4k only if you are very limited on memory.
|
---|
40 | //config:
|
---|
41 | //config:config FEATURE_VI_8BIT
|
---|
42 | //config: bool "Allow vi to display 8-bit chars (otherwise shows dots)"
|
---|
43 | //config: default n
|
---|
44 | //config: depends on VI
|
---|
45 | //config: help
|
---|
46 | //config: If your terminal can display characters with high bit set,
|
---|
47 | //config: you may want to enable this. Note: vi is not Unicode-capable.
|
---|
48 | //config: If your terminal combines several 8-bit bytes into one character
|
---|
49 | //config: (as in Unicode mode), this will not work properly.
|
---|
50 | //config:
|
---|
51 | //config:config FEATURE_VI_COLON
|
---|
52 | //config: bool "Enable \":\" colon commands (no \"ex\" mode)"
|
---|
53 | //config: default y
|
---|
54 | //config: depends on VI
|
---|
55 | //config: help
|
---|
56 | //config: Enable a limited set of colon commands for vi. This does not
|
---|
57 | //config: provide an "ex" mode.
|
---|
58 | //config:
|
---|
59 | //config:config FEATURE_VI_YANKMARK
|
---|
60 | //config: bool "Enable yank/put commands and mark cmds"
|
---|
61 | //config: default y
|
---|
62 | //config: depends on VI
|
---|
63 | //config: help
|
---|
64 | //config: This will enable you to use yank and put, as well as mark in
|
---|
65 | //config: busybox vi.
|
---|
66 | //config:
|
---|
67 | //config:config FEATURE_VI_SEARCH
|
---|
68 | //config: bool "Enable search and replace cmds"
|
---|
69 | //config: default y
|
---|
70 | //config: depends on VI
|
---|
71 | //config: help
|
---|
72 | //config: Select this if you wish to be able to do search and replace in
|
---|
73 | //config: busybox vi.
|
---|
74 | //config:
|
---|
75 | //config:config FEATURE_VI_REGEX_SEARCH
|
---|
76 | //config: bool "Enable regex in search and replace"
|
---|
77 | //config: default n # Uses GNU regex, which may be unavailable. FIXME
|
---|
78 | //config: depends on FEATURE_VI_SEARCH
|
---|
79 | //config: help
|
---|
80 | //config: Use extended regex search.
|
---|
81 | //config:
|
---|
82 | //config:config FEATURE_VI_USE_SIGNALS
|
---|
83 | //config: bool "Catch signals"
|
---|
84 | //config: default y
|
---|
85 | //config: depends on VI
|
---|
86 | //config: help
|
---|
87 | //config: Selecting this option will make busybox vi signal aware. This will
|
---|
88 | //config: make busybox vi support SIGWINCH to deal with Window Changes, catch
|
---|
89 | //config: Ctrl-Z and Ctrl-C and alarms.
|
---|
90 | //config:
|
---|
91 | //config:config FEATURE_VI_DOT_CMD
|
---|
92 | //config: bool "Remember previous cmd and \".\" cmd"
|
---|
93 | //config: default y
|
---|
94 | //config: depends on VI
|
---|
95 | //config: help
|
---|
96 | //config: Make busybox vi remember the last command and be able to repeat it.
|
---|
97 | //config:
|
---|
98 | //config:config FEATURE_VI_READONLY
|
---|
99 | //config: bool "Enable -R option and \"view\" mode"
|
---|
100 | //config: default y
|
---|
101 | //config: depends on VI
|
---|
102 | //config: help
|
---|
103 | //config: Enable the read-only command line option, which allows the user to
|
---|
104 | //config: open a file in read-only mode.
|
---|
105 | //config:
|
---|
106 | //config:config FEATURE_VI_SETOPTS
|
---|
107 | //config: bool "Enable set-able options, ai ic showmatch"
|
---|
108 | //config: default y
|
---|
109 | //config: depends on VI
|
---|
110 | //config: help
|
---|
111 | //config: Enable the editor to set some (ai, ic, showmatch) options.
|
---|
112 | //config:
|
---|
113 | //config:config FEATURE_VI_SET
|
---|
114 | //config: bool "Support for :set"
|
---|
115 | //config: default y
|
---|
116 | //config: depends on VI
|
---|
117 | //config: help
|
---|
118 | //config: Support for ":set".
|
---|
119 | //config:
|
---|
120 | //config:config FEATURE_VI_WIN_RESIZE
|
---|
121 | //config: bool "Handle window resize"
|
---|
122 | //config: default y
|
---|
123 | //config: depends on VI
|
---|
124 | //config: help
|
---|
125 | //config: Make busybox vi behave nicely with terminals that get resized.
|
---|
126 | //config:
|
---|
127 | //config:config FEATURE_VI_ASK_TERMINAL
|
---|
128 | //config: bool "Use 'tell me cursor position' ESC sequence to measure window"
|
---|
129 | //config: default y
|
---|
130 | //config: depends on VI
|
---|
131 | //config: help
|
---|
132 | //config: If terminal size can't be retrieved and $LINES/$COLUMNS are not set,
|
---|
133 | //config: this option makes vi perform a last-ditch effort to find it:
|
---|
134 | //config: position cursor to 999,999 and ask terminal to report real
|
---|
135 | //config: cursor position using "ESC [ 6 n" escape sequence, then read stdin.
|
---|
136 | //config:
|
---|
137 | //config: This is not clean but helps a lot on serial lines and such.
|
---|
138 | //config:config FEATURE_VI_UNDO
|
---|
139 | //config: bool "Support undo command 'u'"
|
---|
140 | //config: default y
|
---|
141 | //config: depends on VI
|
---|
142 | //config: help
|
---|
143 | //config: Support the 'u' command to undo insertion, deletion, and replacement
|
---|
144 | //config: of text.
|
---|
145 | //config:config FEATURE_VI_UNDO_QUEUE
|
---|
146 | //config: bool "Enable undo operation queuing"
|
---|
147 | //config: default y
|
---|
148 | //config: depends on FEATURE_VI_UNDO
|
---|
149 | //config: help
|
---|
150 | //config: The vi undo functions can use an intermediate queue to greatly lower
|
---|
151 | //config: malloc() calls and overhead. When the maximum size of this queue is
|
---|
152 | //config: reached, the contents of the queue are committed to the undo stack.
|
---|
153 | //config: This increases the size of the undo code and allows some undo
|
---|
154 | //config: operations (especially un-typing/backspacing) to be far more useful.
|
---|
155 | //config:config FEATURE_VI_UNDO_QUEUE_MAX
|
---|
156 | //config: int "Maximum undo character queue size"
|
---|
157 | //config: default 256
|
---|
158 | //config: range 32 65536
|
---|
159 | //config: depends on FEATURE_VI_UNDO_QUEUE
|
---|
160 | //config: help
|
---|
161 | //config: This option sets the number of bytes used at runtime for the queue.
|
---|
162 | //config: Smaller values will create more undo objects and reduce the amount
|
---|
163 | //config: of typed or backspaced characters that are grouped into one undo
|
---|
164 | //config: operation; larger values increase the potential size of each undo
|
---|
165 | //config: and will generally malloc() larger objects and less frequently.
|
---|
166 | //config: Unless you want more (or less) frequent "undo points" while typing,
|
---|
167 | //config: you should probably leave this unchanged.
|
---|
168 |
|
---|
169 | //applet:IF_VI(APPLET(vi, BB_DIR_BIN, BB_SUID_DROP))
|
---|
170 |
|
---|
171 | //kbuild:lib-$(CONFIG_VI) += vi.o
|
---|
172 |
|
---|
173 | //usage:#define vi_trivial_usage
|
---|
174 | //usage: "[OPTIONS] [FILE]..."
|
---|
175 | //usage:#define vi_full_usage "\n\n"
|
---|
176 | //usage: "Edit FILE\n"
|
---|
177 | //usage: IF_FEATURE_VI_COLON(
|
---|
178 | //usage: "\n -c CMD Initial command to run ($EXINIT also available)"
|
---|
179 | //usage: )
|
---|
180 | //usage: IF_FEATURE_VI_READONLY(
|
---|
181 | //usage: "\n -R Read-only"
|
---|
182 | //usage: )
|
---|
183 | //usage: "\n -H List available features"
|
---|
184 |
|
---|
185 | #include "libbb.h"
|
---|
186 | /* Should be after libbb.h: on some systems regex.h needs sys/types.h: */
|
---|
187 | #if ENABLE_FEATURE_VI_REGEX_SEARCH
|
---|
188 | # include <regex.h>
|
---|
189 | #endif
|
---|
190 |
|
---|
191 | /* the CRASHME code is unmaintained, and doesn't currently build */
|
---|
192 | #define ENABLE_FEATURE_VI_CRASHME 0
|
---|
193 |
|
---|
194 | #define ENABLE_BASIC_MULTI_CHAR_CODE
|
---|
195 |
|
---|
196 | #if ENABLE_LOCALE_SUPPORT
|
---|
197 |
|
---|
198 | #if ENABLE_FEATURE_VI_8BIT
|
---|
199 | //FIXME: this does not work properly for Unicode anyway
|
---|
200 | # define Isprint(c) (isprint)(c)
|
---|
201 | #else
|
---|
202 | # define Isprint(c) isprint_asciionly(c)
|
---|
203 | #endif
|
---|
204 |
|
---|
205 | #else
|
---|
206 |
|
---|
207 | /* 0x9b is Meta-ESC */
|
---|
208 | #if ENABLE_FEATURE_VI_8BIT
|
---|
209 | #ifndef ENABLE_BASIC_MULTI_CHAR_CODE
|
---|
210 | # define Isprint(c) ((unsigned char)(c) >= ' ' && (c) != 0x7f && (unsigned char)(c) != 0x9b)
|
---|
211 | #else
|
---|
212 | #define MULTI_BYTE_MULTIPLE 3
|
---|
213 | bool Isprint(unsigned char c)
|
---|
214 | {
|
---|
215 | static int mbc_st = 0;
|
---|
216 |
|
---|
217 | if (mbc_st == 0) {
|
---|
218 | if ((c & 0xE0) == 0xC0) { mbc_st = 2; }
|
---|
219 | else if ((c & 0xF0) == 0xE0) { mbc_st = 3; }
|
---|
220 | else if ((c & 0xF8) == 0xF0) { mbc_st = 4; }
|
---|
221 | else if ((c & 0xFC) == 0xF8) { mbc_st = 5; }
|
---|
222 | else if ((c & 0xFE) == 0xFC) { mbc_st = 6; }
|
---|
223 | }
|
---|
224 |
|
---|
225 | if (mbc_st == 0) {
|
---|
226 | return ((unsigned char)(c) >= ' ' && (c) != 0x7f && (unsigned char)(c) != 0x9b);
|
---|
227 | }
|
---|
228 |
|
---|
229 | mbc_st--;
|
---|
230 | return true;
|
---|
231 | }
|
---|
232 | bool IsMultiByteChar(unsigned char c, int *bytes)
|
---|
233 | {
|
---|
234 | bool ret = false;
|
---|
235 | *bytes = 1;
|
---|
236 | if ((c & 0xE0) == 0xC0) { *bytes = 2; }
|
---|
237 | else if ((c & 0xF0) == 0xE0) { *bytes = 3; }
|
---|
238 | else if ((c & 0xF8) == 0xF0) { *bytes = 4; }
|
---|
239 | else if ((c & 0xFC) == 0xF8) { *bytes = 5; }
|
---|
240 | else if ((c & 0xFE) == 0xFC) { *bytes = 6; }
|
---|
241 | if (*bytes != 1)
|
---|
242 | ret = true;
|
---|
243 | return ret;
|
---|
244 | }
|
---|
245 | #endif
|
---|
246 | #else
|
---|
247 | # define Isprint(c) ((unsigned char)(c) >= ' ' && (unsigned char)(c) < 0x7f)
|
---|
248 | #endif
|
---|
249 |
|
---|
250 | #endif
|
---|
251 |
|
---|
252 |
|
---|
253 | enum {
|
---|
254 | MAX_TABSTOP = 32, // sanity limit
|
---|
255 | // User input len. Need not be extra big.
|
---|
256 | // Lines in file being edited *can* be bigger than this.
|
---|
257 | MAX_INPUT_LEN = 128,
|
---|
258 | // Sanity limits. We have only one buffer of this size.
|
---|
259 | MAX_SCR_COLS = CONFIG_FEATURE_VI_MAX_LEN,
|
---|
260 | MAX_SCR_ROWS = CONFIG_FEATURE_VI_MAX_LEN,
|
---|
261 | };
|
---|
262 |
|
---|
263 | /* VT102 ESC sequences.
|
---|
264 | * See "Xterm Control Sequences"
|
---|
265 | * http://invisible-island.net/xterm/ctlseqs/ctlseqs.html
|
---|
266 | */
|
---|
267 | /* Inverse/Normal text */
|
---|
268 | #define ESC_BOLD_TEXT "\033[7m"
|
---|
269 | #define ESC_NORM_TEXT "\033[0m"
|
---|
270 | /* Bell */
|
---|
271 | #define ESC_BELL "\007"
|
---|
272 | /* Clear-to-end-of-line */
|
---|
273 | #define ESC_CLEAR2EOL "\033[K"
|
---|
274 | /* Clear-to-end-of-screen.
|
---|
275 | * (We use default param here.
|
---|
276 | * Full sequence is "ESC [ <num> J",
|
---|
277 | * <num> is 0/1/2 = "erase below/above/all".)
|
---|
278 | */
|
---|
279 | #define ESC_CLEAR2EOS "\033[J"
|
---|
280 | /* Cursor to given coordinate (1,1: top left) */
|
---|
281 | #define ESC_SET_CURSOR_POS "\033[%u;%uH"
|
---|
282 | //UNUSED
|
---|
283 | ///* Cursor up and down */
|
---|
284 | //#define ESC_CURSOR_UP "\033[A"
|
---|
285 | //#define ESC_CURSOR_DOWN "\n"
|
---|
286 |
|
---|
287 | #if ENABLE_FEATURE_VI_DOT_CMD || ENABLE_FEATURE_VI_YANKMARK
|
---|
288 | // cmds modifying text[]
|
---|
289 | // vda: removed "aAiIs" as they switch us into insert mode
|
---|
290 | // and remembering input for replay after them makes no sense
|
---|
291 | static const char modifying_cmds[] ALIGN1 = "cCdDJoOpPrRxX<>~";
|
---|
292 | #endif
|
---|
293 |
|
---|
294 | enum {
|
---|
295 | YANKONLY = FALSE,
|
---|
296 | YANKDEL = TRUE,
|
---|
297 | FORWARD = 1, // code depends on "1" for array index
|
---|
298 | BACK = -1, // code depends on "-1" for array index
|
---|
299 | LIMITED = 0, // how much of text[] in char_search
|
---|
300 | FULL = 1, // how much of text[] in char_search
|
---|
301 |
|
---|
302 | S_BEFORE_WS = 1, // used in skip_thing() for moving "dot"
|
---|
303 | S_TO_WS = 2, // used in skip_thing() for moving "dot"
|
---|
304 | S_OVER_WS = 3, // used in skip_thing() for moving "dot"
|
---|
305 | S_END_PUNCT = 4, // used in skip_thing() for moving "dot"
|
---|
306 | S_END_ALNUM = 5, // used in skip_thing() for moving "dot"
|
---|
307 | };
|
---|
308 |
|
---|
309 |
|
---|
310 | /* vi.c expects chars to be unsigned. */
|
---|
311 | /* busybox build system provides that, but it's better */
|
---|
312 | /* to audit and fix the source */
|
---|
313 |
|
---|
314 | struct globals {
|
---|
315 | /* many references - keep near the top of globals */
|
---|
316 | char *text, *end; // pointers to the user data in memory
|
---|
317 | char *dot; // where all the action takes place
|
---|
318 | int text_size; // size of the allocated buffer
|
---|
319 |
|
---|
320 | /* the rest */
|
---|
321 | smallint vi_setops;
|
---|
322 | #define VI_AUTOINDENT 1
|
---|
323 | #define VI_SHOWMATCH 2
|
---|
324 | #define VI_IGNORECASE 4
|
---|
325 | #define VI_ERR_METHOD 8
|
---|
326 | #define autoindent (vi_setops & VI_AUTOINDENT)
|
---|
327 | #define showmatch (vi_setops & VI_SHOWMATCH )
|
---|
328 | #define ignorecase (vi_setops & VI_IGNORECASE)
|
---|
329 | /* indicate error with beep or flash */
|
---|
330 | #define err_method (vi_setops & VI_ERR_METHOD)
|
---|
331 |
|
---|
332 | #if ENABLE_FEATURE_VI_READONLY
|
---|
333 | smallint readonly_mode;
|
---|
334 | #define SET_READONLY_FILE(flags) ((flags) |= 0x01)
|
---|
335 | #define SET_READONLY_MODE(flags) ((flags) |= 0x02)
|
---|
336 | #define UNSET_READONLY_FILE(flags) ((flags) &= 0xfe)
|
---|
337 | #else
|
---|
338 | #define SET_READONLY_FILE(flags) ((void)0)
|
---|
339 | #define SET_READONLY_MODE(flags) ((void)0)
|
---|
340 | #define UNSET_READONLY_FILE(flags) ((void)0)
|
---|
341 | #endif
|
---|
342 |
|
---|
343 | smallint editing; // >0 while we are editing a file
|
---|
344 | // [code audit says "can be 0, 1 or 2 only"]
|
---|
345 | smallint cmd_mode; // 0=command 1=insert 2=replace
|
---|
346 | int modified_count; // buffer contents changed if !0
|
---|
347 | int last_modified_count; // = -1;
|
---|
348 | int save_argc; // how many file names on cmd line
|
---|
349 | int cmdcnt; // repetition count
|
---|
350 | unsigned rows, columns; // the terminal screen is this size
|
---|
351 | #if ENABLE_FEATURE_VI_ASK_TERMINAL
|
---|
352 | int get_rowcol_error;
|
---|
353 | #endif
|
---|
354 | int crow, ccol; // cursor is on Crow x Ccol
|
---|
355 | int offset; // chars scrolled off the screen to the left
|
---|
356 | int have_status_msg; // is default edit status needed?
|
---|
357 | // [don't make smallint!]
|
---|
358 | int last_status_cksum; // hash of current status line
|
---|
359 | char *current_filename;
|
---|
360 | char *screenbegin; // index into text[], of top line on the screen
|
---|
361 | char *screen; // pointer to the virtual screen buffer
|
---|
362 | int screensize; // and its size
|
---|
363 | int tabstop;
|
---|
364 | int last_forward_char; // last char searched for with 'f' (int because of Unicode)
|
---|
365 | char erase_char; // the users erase character
|
---|
366 | char last_input_char; // last char read from user
|
---|
367 |
|
---|
368 | #if ENABLE_FEATURE_VI_DOT_CMD
|
---|
369 | smallint adding2q; // are we currently adding user input to q
|
---|
370 | int lmc_len; // length of last_modifying_cmd
|
---|
371 | char *ioq, *ioq_start; // pointer to string for get_one_char to "read"
|
---|
372 | #endif
|
---|
373 | #if ENABLE_FEATURE_VI_USE_SIGNALS || ENABLE_FEATURE_VI_CRASHME
|
---|
374 | int my_pid;
|
---|
375 | #endif
|
---|
376 | #if ENABLE_FEATURE_VI_SEARCH
|
---|
377 | char *last_search_pattern; // last pattern from a '/' or '?' search
|
---|
378 | #endif
|
---|
379 |
|
---|
380 | /* former statics */
|
---|
381 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
382 | char *edit_file__cur_line;
|
---|
383 | #endif
|
---|
384 | int refresh__old_offset;
|
---|
385 | int format_edit_status__tot;
|
---|
386 |
|
---|
387 | /* a few references only */
|
---|
388 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
389 | int YDreg, Ureg; // default delete register and orig line for "U"
|
---|
390 | char *reg[28]; // named register a-z, "D", and "U" 0-25,26,27
|
---|
391 | char *mark[28]; // user marks points somewhere in text[]- a-z and previous context ''
|
---|
392 | char *context_start, *context_end;
|
---|
393 | #endif
|
---|
394 | #if ENABLE_FEATURE_VI_USE_SIGNALS
|
---|
395 | sigjmp_buf restart; // catch_sig()
|
---|
396 | #endif
|
---|
397 | struct termios term_orig, term_vi; // remember what the cooked mode was
|
---|
398 | #if ENABLE_FEATURE_VI_COLON
|
---|
399 | char *initial_cmds[3]; // currently 2 entries, NULL terminated
|
---|
400 | #endif
|
---|
401 | // Should be just enough to hold a key sequence,
|
---|
402 | // but CRASHME mode uses it as generated command buffer too
|
---|
403 | #if ENABLE_FEATURE_VI_CRASHME
|
---|
404 | char readbuffer[128];
|
---|
405 | #else
|
---|
406 | char readbuffer[KEYCODE_BUFFER_SIZE];
|
---|
407 | #endif
|
---|
408 | #define STATUS_BUFFER_LEN 200
|
---|
409 | char status_buffer[STATUS_BUFFER_LEN]; // messages to the user
|
---|
410 | #if ENABLE_FEATURE_VI_DOT_CMD
|
---|
411 | char last_modifying_cmd[MAX_INPUT_LEN]; // last modifying cmd for "."
|
---|
412 | #endif
|
---|
413 | char get_input_line__buf[MAX_INPUT_LEN]; /* former static */
|
---|
414 |
|
---|
415 | char scr_out_buf[MAX_SCR_COLS + MAX_TABSTOP * 2];
|
---|
416 | #if ENABLE_FEATURE_VI_UNDO
|
---|
417 | // undo_push() operations
|
---|
418 | #define UNDO_INS 0
|
---|
419 | #define UNDO_DEL 1
|
---|
420 | #define UNDO_INS_CHAIN 2
|
---|
421 | #define UNDO_DEL_CHAIN 3
|
---|
422 | // UNDO_*_QUEUED must be equal to UNDO_xxx ORed with UNDO_QUEUED_FLAG
|
---|
423 | #define UNDO_QUEUED_FLAG 4
|
---|
424 | #define UNDO_INS_QUEUED 4
|
---|
425 | #define UNDO_DEL_QUEUED 5
|
---|
426 | #define UNDO_USE_SPOS 32
|
---|
427 | #define UNDO_EMPTY 64
|
---|
428 | // Pass-through flags for functions that can be undone
|
---|
429 | #define NO_UNDO 0
|
---|
430 | #define ALLOW_UNDO 1
|
---|
431 | #define ALLOW_UNDO_CHAIN 2
|
---|
432 | # if ENABLE_FEATURE_VI_UNDO_QUEUE
|
---|
433 | #define ALLOW_UNDO_QUEUED 3
|
---|
434 | char undo_queue_state;
|
---|
435 | int undo_q;
|
---|
436 | char *undo_queue_spos; // Start position of queued operation
|
---|
437 | char undo_queue[CONFIG_FEATURE_VI_UNDO_QUEUE_MAX];
|
---|
438 | # else
|
---|
439 | // If undo queuing disabled, don't invoke the missing queue logic
|
---|
440 | #define ALLOW_UNDO_QUEUED 1
|
---|
441 | # endif
|
---|
442 |
|
---|
443 | struct undo_object {
|
---|
444 | struct undo_object *prev; // Linking back avoids list traversal (LIFO)
|
---|
445 | int start; // Offset where the data should be restored/deleted
|
---|
446 | int length; // total data size
|
---|
447 | uint8_t u_type; // 0=deleted, 1=inserted, 2=swapped
|
---|
448 | char undo_text[1]; // text that was deleted (if deletion)
|
---|
449 | } *undo_stack_tail;
|
---|
450 | #endif /* ENABLE_FEATURE_VI_UNDO */
|
---|
451 | };
|
---|
452 | #define G (*ptr_to_globals)
|
---|
453 | #define text (G.text )
|
---|
454 | #define text_size (G.text_size )
|
---|
455 | #define end (G.end )
|
---|
456 | #define dot (G.dot )
|
---|
457 | #define reg (G.reg )
|
---|
458 |
|
---|
459 | #define vi_setops (G.vi_setops )
|
---|
460 | #define editing (G.editing )
|
---|
461 | #define cmd_mode (G.cmd_mode )
|
---|
462 | #define modified_count (G.modified_count )
|
---|
463 | #define last_modified_count (G.last_modified_count)
|
---|
464 | #define save_argc (G.save_argc )
|
---|
465 | #define cmdcnt (G.cmdcnt )
|
---|
466 | #define rows (G.rows )
|
---|
467 | #define columns (G.columns )
|
---|
468 | #define crow (G.crow )
|
---|
469 | #define ccol (G.ccol )
|
---|
470 | #define offset (G.offset )
|
---|
471 | #define status_buffer (G.status_buffer )
|
---|
472 | #define have_status_msg (G.have_status_msg )
|
---|
473 | #define last_status_cksum (G.last_status_cksum )
|
---|
474 | #define current_filename (G.current_filename )
|
---|
475 | #define screen (G.screen )
|
---|
476 | #define screensize (G.screensize )
|
---|
477 | #define screenbegin (G.screenbegin )
|
---|
478 | #define tabstop (G.tabstop )
|
---|
479 | #define last_forward_char (G.last_forward_char )
|
---|
480 | #define erase_char (G.erase_char )
|
---|
481 | #define last_input_char (G.last_input_char )
|
---|
482 | #if ENABLE_FEATURE_VI_READONLY
|
---|
483 | #define readonly_mode (G.readonly_mode )
|
---|
484 | #else
|
---|
485 | #define readonly_mode 0
|
---|
486 | #endif
|
---|
487 | #define adding2q (G.adding2q )
|
---|
488 | #define lmc_len (G.lmc_len )
|
---|
489 | #define ioq (G.ioq )
|
---|
490 | #define ioq_start (G.ioq_start )
|
---|
491 | #define my_pid (G.my_pid )
|
---|
492 | #define last_search_pattern (G.last_search_pattern)
|
---|
493 |
|
---|
494 | #define edit_file__cur_line (G.edit_file__cur_line)
|
---|
495 | #define refresh__old_offset (G.refresh__old_offset)
|
---|
496 | #define format_edit_status__tot (G.format_edit_status__tot)
|
---|
497 |
|
---|
498 | #define YDreg (G.YDreg )
|
---|
499 | #define Ureg (G.Ureg )
|
---|
500 | #define mark (G.mark )
|
---|
501 | #define context_start (G.context_start )
|
---|
502 | #define context_end (G.context_end )
|
---|
503 | #define restart (G.restart )
|
---|
504 | #define term_orig (G.term_orig )
|
---|
505 | #define term_vi (G.term_vi )
|
---|
506 | #define initial_cmds (G.initial_cmds )
|
---|
507 | #define readbuffer (G.readbuffer )
|
---|
508 | #define scr_out_buf (G.scr_out_buf )
|
---|
509 | #define last_modifying_cmd (G.last_modifying_cmd )
|
---|
510 | #define get_input_line__buf (G.get_input_line__buf)
|
---|
511 |
|
---|
512 | #if ENABLE_FEATURE_VI_UNDO
|
---|
513 | #define undo_stack_tail (G.undo_stack_tail )
|
---|
514 | # if ENABLE_FEATURE_VI_UNDO_QUEUE
|
---|
515 | #define undo_queue_state (G.undo_queue_state)
|
---|
516 | #define undo_q (G.undo_q )
|
---|
517 | #define undo_queue (G.undo_queue )
|
---|
518 | #define undo_queue_spos (G.undo_queue_spos )
|
---|
519 | # endif
|
---|
520 | #endif
|
---|
521 |
|
---|
522 | #define INIT_G() do { \
|
---|
523 | SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \
|
---|
524 | last_modified_count = -1; \
|
---|
525 | /* "" but has space for 2 chars: */ \
|
---|
526 | IF_FEATURE_VI_SEARCH(last_search_pattern = xzalloc(2);) \
|
---|
527 | } while (0)
|
---|
528 |
|
---|
529 |
|
---|
530 | static void edit_file(char *); // edit one file
|
---|
531 | static void do_cmd(int); // execute a command
|
---|
532 | static int next_tabstop(int);
|
---|
533 | static void sync_cursor(char *, int *, int *); // synchronize the screen cursor to dot
|
---|
534 | static char *begin_line(char *); // return pointer to cur line B-o-l
|
---|
535 | static char *end_line(char *); // return pointer to cur line E-o-l
|
---|
536 | static char *prev_line(char *); // return pointer to prev line B-o-l
|
---|
537 | static char *next_line(char *); // return pointer to next line B-o-l
|
---|
538 | static char *end_screen(void); // get pointer to last char on screen
|
---|
539 | static int count_lines(char *, char *); // count line from start to stop
|
---|
540 | static char *find_line(int); // find beginning of line #li
|
---|
541 | static char *move_to_col(char *, int); // move "p" to column l
|
---|
542 | static void dot_left(void); // move dot left- dont leave line
|
---|
543 | static void dot_right(void); // move dot right- dont leave line
|
---|
544 | static void dot_begin(void); // move dot to B-o-l
|
---|
545 | static void dot_end(void); // move dot to E-o-l
|
---|
546 | static void dot_next(void); // move dot to next line B-o-l
|
---|
547 | static void dot_prev(void); // move dot to prev line B-o-l
|
---|
548 | static void dot_scroll(int, int); // move the screen up or down
|
---|
549 | static void dot_skip_over_ws(void); // move dot pat WS
|
---|
550 | static char *bound_dot(char *); // make sure text[0] <= P < "end"
|
---|
551 | static char *new_screen(int, int); // malloc virtual screen memory
|
---|
552 | #if !ENABLE_FEATURE_VI_UNDO
|
---|
553 | #define char_insert(a,b,c) char_insert(a,b)
|
---|
554 | #endif
|
---|
555 | static char *char_insert(char *, char, int); // insert the char c at 'p'
|
---|
556 | // might reallocate text[]! use p += stupid_insert(p, ...),
|
---|
557 | // and be careful to not use pointers into potentially freed text[]!
|
---|
558 | static uintptr_t stupid_insert(char *, char); // stupidly insert the char c at 'p'
|
---|
559 | static int find_range(char **, char **, char); // return pointers for an object
|
---|
560 | static int st_test(char *, int, int, char *); // helper for skip_thing()
|
---|
561 | static char *skip_thing(char *, int, int, int); // skip some object
|
---|
562 | static char *find_pair(char *, const char); // find matching pair () [] {}
|
---|
563 | #if !ENABLE_FEATURE_VI_UNDO
|
---|
564 | #define text_hole_delete(a,b,c) text_hole_delete(a,b)
|
---|
565 | #endif
|
---|
566 | static char *text_hole_delete(char *, char *, int); // at "p", delete a 'size' byte hole
|
---|
567 | // might reallocate text[]! use p += text_hole_make(p, ...),
|
---|
568 | // and be careful to not use pointers into potentially freed text[]!
|
---|
569 | static uintptr_t text_hole_make(char *, int); // at "p", make a 'size' byte hole
|
---|
570 | #if !ENABLE_FEATURE_VI_UNDO
|
---|
571 | #define yank_delete(a,b,c,d,e) yank_delete(a,b,c,d)
|
---|
572 | #endif
|
---|
573 | static char *yank_delete(char *, char *, int, int, int); // yank text[] into register then delete
|
---|
574 | static void show_help(void); // display some help info
|
---|
575 | static void rawmode(void); // set "raw" mode on tty
|
---|
576 | static void cookmode(void); // return to "cooked" mode on tty
|
---|
577 | // sleep for 'h' 1/100 seconds, return 1/0 if stdin is (ready for read)/(not ready)
|
---|
578 | static int mysleep(int);
|
---|
579 | static int readit(void); // read (maybe cursor) key from stdin
|
---|
580 | static int get_one_char(void); // read 1 char from stdin
|
---|
581 | // file_insert might reallocate text[]!
|
---|
582 | static int file_insert(const char *, char *, int);
|
---|
583 | static int file_write(char *, char *, char *);
|
---|
584 | static void place_cursor(int, int);
|
---|
585 | static void screen_erase(void);
|
---|
586 | static void clear_to_eol(void);
|
---|
587 | static void clear_to_eos(void);
|
---|
588 | static void go_bottom_and_clear_to_eol(void);
|
---|
589 | static void standout_start(void); // send "start reverse video" sequence
|
---|
590 | static void standout_end(void); // send "end reverse video" sequence
|
---|
591 | static void flash(int); // flash the terminal screen
|
---|
592 | static void show_status_line(void); // put a message on the bottom line
|
---|
593 | static void status_line(const char *, ...); // print to status buf
|
---|
594 | static void status_line_bold(const char *, ...);
|
---|
595 | static void status_line_bold_errno(const char *fn);
|
---|
596 | static void not_implemented(const char *); // display "Not implemented" message
|
---|
597 | static int format_edit_status(void); // format file status on status line
|
---|
598 | static void redraw(int); // force a full screen refresh
|
---|
599 | #ifndef ENABLE_BASIC_MULTI_CHAR_CODE
|
---|
600 | static char* format_line(char* /*, int*/);
|
---|
601 | #else
|
---|
602 | static char* format_line(char* , int*, int*);
|
---|
603 | #endif
|
---|
604 | static void refresh(int); // update the terminal from screen[]
|
---|
605 |
|
---|
606 | static void indicate_error(void); // use flash or beep to indicate error
|
---|
607 | static void Hit_Return(void);
|
---|
608 |
|
---|
609 | #if ENABLE_FEATURE_VI_SEARCH
|
---|
610 | static char *char_search(char *, const char *, int, int); // search for pattern starting at p
|
---|
611 | #endif
|
---|
612 | #if ENABLE_FEATURE_VI_COLON
|
---|
613 | static char *get_one_address(char *, int *); // get colon addr, if present
|
---|
614 | static char *get_address(char *, int *, int *); // get two colon addrs, if present
|
---|
615 | #endif
|
---|
616 | static void colon(char *); // execute the "colon" mode cmds
|
---|
617 | #if ENABLE_FEATURE_VI_USE_SIGNALS
|
---|
618 | static void winch_sig(int); // catch window size changes
|
---|
619 | static void suspend_sig(int); // catch ctrl-Z
|
---|
620 | static void catch_sig(int); // catch ctrl-C and alarm time-outs
|
---|
621 | #endif
|
---|
622 | #if ENABLE_FEATURE_VI_DOT_CMD
|
---|
623 | static void start_new_cmd_q(char); // new queue for command
|
---|
624 | static void end_cmd_q(void); // stop saving input chars
|
---|
625 | #else
|
---|
626 | #define end_cmd_q() ((void)0)
|
---|
627 | #endif
|
---|
628 | #if ENABLE_FEATURE_VI_SETOPTS
|
---|
629 | static void showmatching(char *); // show the matching pair () [] {}
|
---|
630 | #endif
|
---|
631 | #if ENABLE_FEATURE_VI_YANKMARK || (ENABLE_FEATURE_VI_COLON && ENABLE_FEATURE_VI_SEARCH) || ENABLE_FEATURE_VI_CRASHME
|
---|
632 | // might reallocate text[]! use p += string_insert(p, ...),
|
---|
633 | // and be careful to not use pointers into potentially freed text[]!
|
---|
634 | # if !ENABLE_FEATURE_VI_UNDO
|
---|
635 | #define string_insert(a,b,c) string_insert(a,b)
|
---|
636 | # endif
|
---|
637 | static uintptr_t string_insert(char *, const char *, int); // insert the string at 'p'
|
---|
638 | #endif
|
---|
639 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
640 | static char *text_yank(char *, char *, int); // save copy of "p" into a register
|
---|
641 | static char what_reg(void); // what is letter of current YDreg
|
---|
642 | static void check_context(char); // remember context for '' command
|
---|
643 | #endif
|
---|
644 | #if ENABLE_FEATURE_VI_UNDO
|
---|
645 | static void flush_undo_data(void);
|
---|
646 | static void undo_push(char *, unsigned int, unsigned char); // Push an operation on the undo stack
|
---|
647 | static void undo_pop(void); // Undo the last operation
|
---|
648 | # if ENABLE_FEATURE_VI_UNDO_QUEUE
|
---|
649 | static void undo_queue_commit(void); // Flush any queued objects to the undo stack
|
---|
650 | # else
|
---|
651 | # define undo_queue_commit() ((void)0)
|
---|
652 | # endif
|
---|
653 | #else
|
---|
654 | #define flush_undo_data() ((void)0)
|
---|
655 | #define undo_queue_commit() ((void)0)
|
---|
656 | #endif
|
---|
657 |
|
---|
658 | #if ENABLE_FEATURE_VI_CRASHME
|
---|
659 | static void crash_dummy();
|
---|
660 | static void crash_test();
|
---|
661 | static int crashme = 0;
|
---|
662 | #endif
|
---|
663 |
|
---|
664 | #ifdef ENABLE_BASIC_MULTI_CHAR_CODE
|
---|
665 | extern unsigned int Utf8_to_Utf16(const char *src, int *code_size);
|
---|
666 | extern int bs_char_count(char *str, int pos);
|
---|
667 | #endif
|
---|
668 |
|
---|
669 | static void write1(const char *out)
|
---|
670 | {
|
---|
671 | fputs(out, stdout);
|
---|
672 | }
|
---|
673 |
|
---|
674 | int vi_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
---|
675 | int vi_main(int argc, char **argv)
|
---|
676 | {
|
---|
677 | int c;
|
---|
678 |
|
---|
679 | INIT_G();
|
---|
680 |
|
---|
681 | #if ENABLE_FEATURE_VI_UNDO
|
---|
682 | /* undo_stack_tail = NULL; - already is */
|
---|
683 | #if ENABLE_FEATURE_VI_UNDO_QUEUE
|
---|
684 | undo_queue_state = UNDO_EMPTY;
|
---|
685 | /* undo_q = 0; - already is */
|
---|
686 | #endif
|
---|
687 | #endif
|
---|
688 |
|
---|
689 | #if ENABLE_FEATURE_VI_USE_SIGNALS || ENABLE_FEATURE_VI_CRASHME
|
---|
690 | my_pid = getpid();
|
---|
691 | #endif
|
---|
692 | #if ENABLE_FEATURE_VI_CRASHME
|
---|
693 | srand((long) my_pid);
|
---|
694 | #endif
|
---|
695 | #ifdef NO_SUCH_APPLET_YET
|
---|
696 | /* If we aren't "vi", we are "view" */
|
---|
697 | if (ENABLE_FEATURE_VI_READONLY && applet_name[2]) {
|
---|
698 | SET_READONLY_MODE(readonly_mode);
|
---|
699 | }
|
---|
700 | #endif
|
---|
701 |
|
---|
702 | // autoindent is not default in vim 7.3
|
---|
703 | vi_setops = /*VI_AUTOINDENT |*/ VI_SHOWMATCH | VI_IGNORECASE;
|
---|
704 | // 1- process $HOME/.exrc file (not inplemented yet)
|
---|
705 | // 2- process EXINIT variable from environment
|
---|
706 | // 3- process command line args
|
---|
707 | #if ENABLE_FEATURE_VI_COLON
|
---|
708 | {
|
---|
709 | char *p = getenv("EXINIT");
|
---|
710 | if (p && *p)
|
---|
711 | initial_cmds[0] = xstrndup(p, MAX_INPUT_LEN);
|
---|
712 | }
|
---|
713 | #endif
|
---|
714 | while ((c = getopt(argc, argv, "hCRH" IF_FEATURE_VI_COLON("c:"))) != -1) {
|
---|
715 | switch (c) {
|
---|
716 | #if ENABLE_FEATURE_VI_CRASHME
|
---|
717 | case 'C':
|
---|
718 | crashme = 1;
|
---|
719 | break;
|
---|
720 | #endif
|
---|
721 | #if ENABLE_FEATURE_VI_READONLY
|
---|
722 | case 'R': // Read-only flag
|
---|
723 | SET_READONLY_MODE(readonly_mode);
|
---|
724 | break;
|
---|
725 | #endif
|
---|
726 | #if ENABLE_FEATURE_VI_COLON
|
---|
727 | case 'c': // cmd line vi command
|
---|
728 | if (*optarg)
|
---|
729 | initial_cmds[initial_cmds[0] != NULL] = xstrndup(optarg, MAX_INPUT_LEN);
|
---|
730 | break;
|
---|
731 | #endif
|
---|
732 | case 'H':
|
---|
733 | show_help();
|
---|
734 | /* fall through */
|
---|
735 | default:
|
---|
736 | bb_show_usage();
|
---|
737 | return 1;
|
---|
738 | }
|
---|
739 | }
|
---|
740 |
|
---|
741 | // The argv array can be used by the ":next" and ":rewind" commands
|
---|
742 | argv += optind;
|
---|
743 | argc -= optind;
|
---|
744 |
|
---|
745 | //----- This is the main file handling loop --------------
|
---|
746 | save_argc = argc;
|
---|
747 | optind = 0;
|
---|
748 | // "Save cursor, use alternate screen buffer, clear screen"
|
---|
749 | write1("\033[?1049h");
|
---|
750 | while (1) {
|
---|
751 | edit_file(argv[optind]); /* param might be NULL */
|
---|
752 | if (++optind >= argc)
|
---|
753 | break;
|
---|
754 | }
|
---|
755 | // "Use normal screen buffer, restore cursor"
|
---|
756 | write1("\033[?1049l");
|
---|
757 | //-----------------------------------------------------------
|
---|
758 |
|
---|
759 | return 0;
|
---|
760 | }
|
---|
761 |
|
---|
762 | /* read text from file or create an empty buf */
|
---|
763 | /* will also update current_filename */
|
---|
764 | static int init_text_buffer(char *fn)
|
---|
765 | {
|
---|
766 | int rc;
|
---|
767 |
|
---|
768 | flush_undo_data();
|
---|
769 | modified_count = 0;
|
---|
770 | last_modified_count = -1;
|
---|
771 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
772 | /* init the marks */
|
---|
773 | memset(mark, 0, sizeof(mark));
|
---|
774 | #endif
|
---|
775 |
|
---|
776 | /* allocate/reallocate text buffer */
|
---|
777 | free(text);
|
---|
778 | text_size = 10240;
|
---|
779 | screenbegin = dot = end = text = xzalloc(text_size);
|
---|
780 |
|
---|
781 | if (fn != current_filename) {
|
---|
782 | free(current_filename);
|
---|
783 | current_filename = xstrdup(fn);
|
---|
784 | }
|
---|
785 | rc = file_insert(fn, text, 1);
|
---|
786 | if (rc < 0) {
|
---|
787 | // file doesnt exist. Start empty buf with dummy line
|
---|
788 | char_insert(text, '\n', NO_UNDO);
|
---|
789 | }
|
---|
790 | return rc;
|
---|
791 | }
|
---|
792 |
|
---|
793 | #if ENABLE_FEATURE_VI_WIN_RESIZE
|
---|
794 | static int query_screen_dimensions(void)
|
---|
795 | {
|
---|
796 | int err = get_terminal_width_height(STDIN_FILENO, &columns, &rows);
|
---|
797 | if (rows > MAX_SCR_ROWS)
|
---|
798 | rows = MAX_SCR_ROWS;
|
---|
799 | if (columns > MAX_SCR_COLS)
|
---|
800 | columns = MAX_SCR_COLS;
|
---|
801 | return err;
|
---|
802 | }
|
---|
803 | #else
|
---|
804 | # define query_screen_dimensions() (0)
|
---|
805 | #endif
|
---|
806 |
|
---|
807 | static void edit_file(char *fn)
|
---|
808 | {
|
---|
809 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
810 | #define cur_line edit_file__cur_line
|
---|
811 | #endif
|
---|
812 | int c;
|
---|
813 | #if ENABLE_FEATURE_VI_USE_SIGNALS
|
---|
814 | int sig;
|
---|
815 | #endif
|
---|
816 |
|
---|
817 | editing = 1; // 0 = exit, 1 = one file, 2 = multiple files
|
---|
818 | rawmode();
|
---|
819 | rows = 24;
|
---|
820 | columns = 80;
|
---|
821 | IF_FEATURE_VI_ASK_TERMINAL(G.get_rowcol_error =) query_screen_dimensions();
|
---|
822 | #if ENABLE_FEATURE_VI_ASK_TERMINAL
|
---|
823 | if (G.get_rowcol_error /* TODO? && no input on stdin */) {
|
---|
824 | uint64_t k;
|
---|
825 | write1("\033[999;999H" "\033[6n");
|
---|
826 | fflush_all();
|
---|
827 | k = read_key(STDIN_FILENO, readbuffer, /*timeout_ms:*/ 100);
|
---|
828 | if ((int32_t)k == KEYCODE_CURSOR_POS) {
|
---|
829 | uint32_t rc = (k >> 32);
|
---|
830 | columns = (rc & 0x7fff);
|
---|
831 | if (columns > MAX_SCR_COLS)
|
---|
832 | columns = MAX_SCR_COLS;
|
---|
833 | rows = ((rc >> 16) & 0x7fff);
|
---|
834 | if (rows > MAX_SCR_ROWS)
|
---|
835 | rows = MAX_SCR_ROWS;
|
---|
836 | }
|
---|
837 | }
|
---|
838 | #endif
|
---|
839 | new_screen(rows, columns); // get memory for virtual screen
|
---|
840 | init_text_buffer(fn);
|
---|
841 |
|
---|
842 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
843 | YDreg = 26; // default Yank/Delete reg
|
---|
844 | Ureg = 27; // hold orig line for "U" cmd
|
---|
845 | mark[26] = mark[27] = text; // init "previous context"
|
---|
846 | #endif
|
---|
847 |
|
---|
848 | last_forward_char = last_input_char = '\0';
|
---|
849 | crow = 0;
|
---|
850 | ccol = 0;
|
---|
851 |
|
---|
852 | #if ENABLE_FEATURE_VI_USE_SIGNALS
|
---|
853 | signal(SIGINT, catch_sig);
|
---|
854 | signal(SIGWINCH, winch_sig);
|
---|
855 | signal(SIGTSTP, suspend_sig);
|
---|
856 | sig = sigsetjmp(restart, 1);
|
---|
857 | if (sig != 0) {
|
---|
858 | screenbegin = dot = text;
|
---|
859 | }
|
---|
860 | #endif
|
---|
861 |
|
---|
862 | cmd_mode = 0; // 0=command 1=insert 2='R'eplace
|
---|
863 | cmdcnt = 0;
|
---|
864 | tabstop = 8;
|
---|
865 | offset = 0; // no horizontal offset
|
---|
866 | c = '\0';
|
---|
867 | #if ENABLE_FEATURE_VI_DOT_CMD
|
---|
868 | free(ioq_start);
|
---|
869 | ioq = ioq_start = NULL;
|
---|
870 | lmc_len = 0;
|
---|
871 | adding2q = 0;
|
---|
872 | #endif
|
---|
873 |
|
---|
874 | #if ENABLE_FEATURE_VI_COLON
|
---|
875 | {
|
---|
876 | char *p, *q;
|
---|
877 | int n = 0;
|
---|
878 |
|
---|
879 | while ((p = initial_cmds[n]) != NULL) {
|
---|
880 | do {
|
---|
881 | q = p;
|
---|
882 | p = strchr(q, '\n');
|
---|
883 | if (p)
|
---|
884 | while (*p == '\n')
|
---|
885 | *p++ = '\0';
|
---|
886 | if (*q)
|
---|
887 | colon(q);
|
---|
888 | } while (p);
|
---|
889 | free(initial_cmds[n]);
|
---|
890 | initial_cmds[n] = NULL;
|
---|
891 | n++;
|
---|
892 | }
|
---|
893 | }
|
---|
894 | #endif
|
---|
895 | redraw(FALSE); // dont force every col re-draw
|
---|
896 | //------This is the main Vi cmd handling loop -----------------------
|
---|
897 | while (editing > 0) {
|
---|
898 | #if ENABLE_FEATURE_VI_CRASHME
|
---|
899 | if (crashme > 0) {
|
---|
900 | if ((end - text) > 1) {
|
---|
901 | crash_dummy(); // generate a random command
|
---|
902 | } else {
|
---|
903 | crashme = 0;
|
---|
904 | string_insert(text, "\n\n##### Ran out of text to work on. #####\n\n", NO_UNDO); // insert the string
|
---|
905 | dot = text;
|
---|
906 | refresh(FALSE);
|
---|
907 | }
|
---|
908 | }
|
---|
909 | #endif
|
---|
910 | last_input_char = c = get_one_char(); // get a cmd from user
|
---|
911 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
912 | // save a copy of the current line- for the 'U" command
|
---|
913 | if (begin_line(dot) != cur_line) {
|
---|
914 | cur_line = begin_line(dot);
|
---|
915 | text_yank(begin_line(dot), end_line(dot), Ureg);
|
---|
916 | }
|
---|
917 | #endif
|
---|
918 | #if ENABLE_FEATURE_VI_DOT_CMD
|
---|
919 | // These are commands that change text[].
|
---|
920 | // Remember the input for the "." command
|
---|
921 | if (!adding2q && ioq_start == NULL
|
---|
922 | && cmd_mode == 0 // command mode
|
---|
923 | && c > '\0' // exclude NUL and non-ASCII chars
|
---|
924 | && c < 0x7f // (Unicode and such)
|
---|
925 | && strchr(modifying_cmds, c)
|
---|
926 | ) {
|
---|
927 | start_new_cmd_q(c);
|
---|
928 | }
|
---|
929 | #endif
|
---|
930 | do_cmd(c); // execute the user command
|
---|
931 |
|
---|
932 | // poll to see if there is input already waiting. if we are
|
---|
933 | // not able to display output fast enough to keep up, skip
|
---|
934 | // the display update until we catch up with input.
|
---|
935 | if (!readbuffer[0] && mysleep(0) == 0) {
|
---|
936 | // no input pending - so update output
|
---|
937 | refresh(FALSE);
|
---|
938 | show_status_line();
|
---|
939 | }
|
---|
940 | #if ENABLE_FEATURE_VI_CRASHME
|
---|
941 | if (crashme > 0)
|
---|
942 | crash_test(); // test editor variables
|
---|
943 | #endif
|
---|
944 | }
|
---|
945 | //-------------------------------------------------------------------
|
---|
946 |
|
---|
947 | go_bottom_and_clear_to_eol();
|
---|
948 | cookmode();
|
---|
949 | #undef cur_line
|
---|
950 | }
|
---|
951 |
|
---|
952 | //----- The Colon commands -------------------------------------
|
---|
953 | #if ENABLE_FEATURE_VI_COLON
|
---|
954 | static char *get_one_address(char *p, int *addr) // get colon addr, if present
|
---|
955 | {
|
---|
956 | int st;
|
---|
957 | char *q;
|
---|
958 | IF_FEATURE_VI_YANKMARK(char c;)
|
---|
959 | IF_FEATURE_VI_SEARCH(char *pat;)
|
---|
960 |
|
---|
961 | *addr = -1; // assume no addr
|
---|
962 | if (*p == '.') { // the current line
|
---|
963 | p++;
|
---|
964 | q = begin_line(dot);
|
---|
965 | *addr = count_lines(text, q);
|
---|
966 | }
|
---|
967 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
968 | else if (*p == '\'') { // is this a mark addr
|
---|
969 | p++;
|
---|
970 | c = tolower(*p);
|
---|
971 | p++;
|
---|
972 | if (c >= 'a' && c <= 'z') {
|
---|
973 | // we have a mark
|
---|
974 | c = c - 'a';
|
---|
975 | q = mark[(unsigned char) c];
|
---|
976 | if (q != NULL) { // is mark valid
|
---|
977 | *addr = count_lines(text, q);
|
---|
978 | }
|
---|
979 | }
|
---|
980 | }
|
---|
981 | #endif
|
---|
982 | #if ENABLE_FEATURE_VI_SEARCH
|
---|
983 | else if (*p == '/') { // a search pattern
|
---|
984 | q = strchrnul(++p, '/');
|
---|
985 | pat = xstrndup(p, q - p); // save copy of pattern
|
---|
986 | p = q;
|
---|
987 | if (*p == '/')
|
---|
988 | p++;
|
---|
989 | q = char_search(dot, pat, FORWARD, FULL);
|
---|
990 | if (q != NULL) {
|
---|
991 | *addr = count_lines(text, q);
|
---|
992 | }
|
---|
993 | free(pat);
|
---|
994 | }
|
---|
995 | #endif
|
---|
996 | else if (*p == '$') { // the last line in file
|
---|
997 | p++;
|
---|
998 | q = begin_line(end - 1);
|
---|
999 | *addr = count_lines(text, q);
|
---|
1000 | } else if (isdigit(*p)) { // specific line number
|
---|
1001 | sscanf(p, "%d%n", addr, &st);
|
---|
1002 | p += st;
|
---|
1003 | } else {
|
---|
1004 | // unrecognized address - assume -1
|
---|
1005 | *addr = -1;
|
---|
1006 | }
|
---|
1007 | return p;
|
---|
1008 | }
|
---|
1009 |
|
---|
1010 | static char *get_address(char *p, int *b, int *e) // get two colon addrs, if present
|
---|
1011 | {
|
---|
1012 | //----- get the address' i.e., 1,3 'a,'b -----
|
---|
1013 | // get FIRST addr, if present
|
---|
1014 | while (isblank(*p))
|
---|
1015 | p++; // skip over leading spaces
|
---|
1016 | if (*p == '%') { // alias for 1,$
|
---|
1017 | p++;
|
---|
1018 | *b = 1;
|
---|
1019 | *e = count_lines(text, end-1);
|
---|
1020 | goto ga0;
|
---|
1021 | }
|
---|
1022 | p = get_one_address(p, b);
|
---|
1023 | while (isblank(*p))
|
---|
1024 | p++;
|
---|
1025 | if (*p == ',') { // is there a address separator
|
---|
1026 | p++;
|
---|
1027 | while (isblank(*p))
|
---|
1028 | p++;
|
---|
1029 | // get SECOND addr, if present
|
---|
1030 | p = get_one_address(p, e);
|
---|
1031 | }
|
---|
1032 | ga0:
|
---|
1033 | while (isblank(*p))
|
---|
1034 | p++; // skip over trailing spaces
|
---|
1035 | return p;
|
---|
1036 | }
|
---|
1037 |
|
---|
1038 | #if ENABLE_FEATURE_VI_SET && ENABLE_FEATURE_VI_SETOPTS
|
---|
1039 | static void setops(const char *args, const char *opname, int flg_no,
|
---|
1040 | const char *short_opname, int opt)
|
---|
1041 | {
|
---|
1042 | const char *a = args + flg_no;
|
---|
1043 | int l = strlen(opname) - 1; /* opname have + ' ' */
|
---|
1044 |
|
---|
1045 | // maybe strncmp? we had tons of erroneous strncasecmp's...
|
---|
1046 | if (strncasecmp(a, opname, l) == 0
|
---|
1047 | || strncasecmp(a, short_opname, 2) == 0
|
---|
1048 | ) {
|
---|
1049 | if (flg_no)
|
---|
1050 | vi_setops &= ~opt;
|
---|
1051 | else
|
---|
1052 | vi_setops |= opt;
|
---|
1053 | }
|
---|
1054 | }
|
---|
1055 | #endif
|
---|
1056 |
|
---|
1057 | #endif /* FEATURE_VI_COLON */
|
---|
1058 |
|
---|
1059 | // buf must be no longer than MAX_INPUT_LEN!
|
---|
1060 | static void colon(char *buf)
|
---|
1061 | {
|
---|
1062 | #if !ENABLE_FEATURE_VI_COLON
|
---|
1063 | /* Simple ":cmd" handler with minimal set of commands */
|
---|
1064 | char *p = buf;
|
---|
1065 | int cnt;
|
---|
1066 |
|
---|
1067 | if (*p == ':')
|
---|
1068 | p++;
|
---|
1069 | cnt = strlen(p);
|
---|
1070 | if (cnt == 0)
|
---|
1071 | return;
|
---|
1072 | if (strncmp(p, "quit", cnt) == 0
|
---|
1073 | || strncmp(p, "q!", cnt) == 0
|
---|
1074 | ) {
|
---|
1075 | if (modified_count && p[1] != '!') {
|
---|
1076 | status_line_bold("No write since last change (:%s! overrides)", p);
|
---|
1077 | } else {
|
---|
1078 | editing = 0;
|
---|
1079 | }
|
---|
1080 | return;
|
---|
1081 | }
|
---|
1082 | if (strncmp(p, "write", cnt) == 0
|
---|
1083 | || strncmp(p, "wq", cnt) == 0
|
---|
1084 | || strncmp(p, "wn", cnt) == 0
|
---|
1085 | || (p[0] == 'x' && !p[1])
|
---|
1086 | ) {
|
---|
1087 | cnt = file_write(current_filename, text, end - 1);
|
---|
1088 | if (cnt < 0) {
|
---|
1089 | if (cnt == -1)
|
---|
1090 | status_line_bold("Write error: %s", strerror(errno));
|
---|
1091 | } else {
|
---|
1092 | modified_count = 0;
|
---|
1093 | last_modified_count = -1;
|
---|
1094 | status_line("'%s' %dL, %dC",
|
---|
1095 | current_filename,
|
---|
1096 | count_lines(text, end - 1), cnt
|
---|
1097 | );
|
---|
1098 | if (p[0] == 'x' || p[1] == 'q' || p[1] == 'n'
|
---|
1099 | || p[0] == 'X' || p[1] == 'Q' || p[1] == 'N'
|
---|
1100 | ) {
|
---|
1101 | editing = 0;
|
---|
1102 | }
|
---|
1103 | }
|
---|
1104 | return;
|
---|
1105 | }
|
---|
1106 | if (strncmp(p, "file", cnt) == 0) {
|
---|
1107 | last_status_cksum = 0; // force status update
|
---|
1108 | return;
|
---|
1109 | }
|
---|
1110 | if (sscanf(p, "%d", &cnt) > 0) {
|
---|
1111 | dot = find_line(cnt);
|
---|
1112 | dot_skip_over_ws();
|
---|
1113 | return;
|
---|
1114 | }
|
---|
1115 | not_implemented(p);
|
---|
1116 | #else
|
---|
1117 |
|
---|
1118 | char c, *orig_buf, *buf1, *q, *r;
|
---|
1119 | char *fn, cmd[MAX_INPUT_LEN], args[MAX_INPUT_LEN];
|
---|
1120 | int i, l, li, b, e;
|
---|
1121 | int useforce;
|
---|
1122 |
|
---|
1123 | // :3154 // if (-e line 3154) goto it else stay put
|
---|
1124 | // :4,33w! foo // write a portion of buffer to file "foo"
|
---|
1125 | // :w // write all of buffer to current file
|
---|
1126 | // :q // quit
|
---|
1127 | // :q! // quit- dont care about modified file
|
---|
1128 | // :'a,'z!sort -u // filter block through sort
|
---|
1129 | // :'f // goto mark "f"
|
---|
1130 | // :'fl // list literal the mark "f" line
|
---|
1131 | // :.r bar // read file "bar" into buffer before dot
|
---|
1132 | // :/123/,/abc/d // delete lines from "123" line to "abc" line
|
---|
1133 | // :/xyz/ // goto the "xyz" line
|
---|
1134 | // :s/find/replace/ // substitute pattern "find" with "replace"
|
---|
1135 | // :!<cmd> // run <cmd> then return
|
---|
1136 | //
|
---|
1137 |
|
---|
1138 | if (!buf[0])
|
---|
1139 | goto ret;
|
---|
1140 | if (*buf == ':')
|
---|
1141 | buf++; // move past the ':'
|
---|
1142 |
|
---|
1143 | li = i = 0;
|
---|
1144 | b = e = -1;
|
---|
1145 | q = text; // assume 1,$ for the range
|
---|
1146 | r = end - 1;
|
---|
1147 | li = count_lines(text, end - 1);
|
---|
1148 | fn = current_filename;
|
---|
1149 |
|
---|
1150 | // look for optional address(es) :. :1 :1,9 :'q,'a :%
|
---|
1151 | buf = get_address(buf, &b, &e);
|
---|
1152 |
|
---|
1153 | // remember orig command line
|
---|
1154 | orig_buf = buf;
|
---|
1155 |
|
---|
1156 | // get the COMMAND into cmd[]
|
---|
1157 | buf1 = cmd;
|
---|
1158 | while (*buf != '\0') {
|
---|
1159 | if (isspace(*buf))
|
---|
1160 | break;
|
---|
1161 | *buf1++ = *buf++;
|
---|
1162 | }
|
---|
1163 | *buf1 = '\0';
|
---|
1164 | // get any ARGuments
|
---|
1165 | while (isblank(*buf))
|
---|
1166 | buf++;
|
---|
1167 | strcpy(args, buf);
|
---|
1168 | useforce = FALSE;
|
---|
1169 | buf1 = last_char_is(cmd, '!');
|
---|
1170 | if (buf1) {
|
---|
1171 | useforce = TRUE;
|
---|
1172 | *buf1 = '\0'; // get rid of !
|
---|
1173 | }
|
---|
1174 | if (b >= 0) {
|
---|
1175 | // if there is only one addr, then the addr
|
---|
1176 | // is the line number of the single line the
|
---|
1177 | // user wants. So, reset the end
|
---|
1178 | // pointer to point at end of the "b" line
|
---|
1179 | q = find_line(b); // what line is #b
|
---|
1180 | r = end_line(q);
|
---|
1181 | li = 1;
|
---|
1182 | }
|
---|
1183 | if (e >= 0) {
|
---|
1184 | // we were given two addrs. change the
|
---|
1185 | // end pointer to the addr given by user.
|
---|
1186 | r = find_line(e); // what line is #e
|
---|
1187 | r = end_line(r);
|
---|
1188 | li = e - b + 1;
|
---|
1189 | }
|
---|
1190 | // ------------ now look for the command ------------
|
---|
1191 | i = strlen(cmd);
|
---|
1192 | if (i == 0) { // :123CR goto line #123
|
---|
1193 | if (b >= 0) {
|
---|
1194 | dot = find_line(b); // what line is #b
|
---|
1195 | dot_skip_over_ws();
|
---|
1196 | }
|
---|
1197 | }
|
---|
1198 | #if ENABLE_FEATURE_ALLOW_EXEC
|
---|
1199 | else if (cmd[0] == '!') { // run a cmd
|
---|
1200 | int retcode;
|
---|
1201 | // :!ls run the <cmd>
|
---|
1202 | go_bottom_and_clear_to_eol();
|
---|
1203 | cookmode();
|
---|
1204 | retcode = system(orig_buf + 1); // run the cmd
|
---|
1205 | if (retcode)
|
---|
1206 | printf("\nshell returned %i\n\n", retcode);
|
---|
1207 | rawmode();
|
---|
1208 | Hit_Return(); // let user see results
|
---|
1209 | }
|
---|
1210 | #endif
|
---|
1211 | else if (cmd[0] == '=' && !cmd[1]) { // where is the address
|
---|
1212 | if (b < 0) { // no addr given- use defaults
|
---|
1213 | b = e = count_lines(text, dot);
|
---|
1214 | }
|
---|
1215 | status_line("%d", b);
|
---|
1216 | } else if (strncmp(cmd, "delete", i) == 0) { // delete lines
|
---|
1217 | if (b < 0) { // no addr given- use defaults
|
---|
1218 | q = begin_line(dot); // assume .,. for the range
|
---|
1219 | r = end_line(dot);
|
---|
1220 | }
|
---|
1221 | dot = yank_delete(q, r, 1, YANKDEL, ALLOW_UNDO); // save, then delete lines
|
---|
1222 | dot_skip_over_ws();
|
---|
1223 | } else if (strncmp(cmd, "edit", i) == 0) { // Edit a file
|
---|
1224 | int size;
|
---|
1225 |
|
---|
1226 | // don't edit, if the current file has been modified
|
---|
1227 | if (modified_count && !useforce) {
|
---|
1228 | status_line_bold("No write since last change (:%s! overrides)", cmd);
|
---|
1229 | goto ret;
|
---|
1230 | }
|
---|
1231 | if (args[0]) {
|
---|
1232 | // the user supplied a file name
|
---|
1233 | fn = args;
|
---|
1234 | } else if (current_filename && current_filename[0]) {
|
---|
1235 | // no user supplied name- use the current filename
|
---|
1236 | // fn = current_filename; was set by default
|
---|
1237 | } else {
|
---|
1238 | // no user file name, no current name- punt
|
---|
1239 | status_line_bold("No current filename");
|
---|
1240 | goto ret;
|
---|
1241 | }
|
---|
1242 |
|
---|
1243 | size = init_text_buffer(fn);
|
---|
1244 |
|
---|
1245 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
1246 | if (Ureg >= 0 && Ureg < 28) {
|
---|
1247 | free(reg[Ureg]); // free orig line reg- for 'U'
|
---|
1248 | reg[Ureg] = NULL;
|
---|
1249 | }
|
---|
1250 | if (YDreg >= 0 && YDreg < 28) {
|
---|
1251 | free(reg[YDreg]); // free default yank/delete register
|
---|
1252 | reg[YDreg] = NULL;
|
---|
1253 | }
|
---|
1254 | #endif
|
---|
1255 | // how many lines in text[]?
|
---|
1256 | li = count_lines(text, end - 1);
|
---|
1257 | status_line("'%s'%s"
|
---|
1258 | IF_FEATURE_VI_READONLY("%s")
|
---|
1259 | " %dL, %dC",
|
---|
1260 | current_filename,
|
---|
1261 | (size < 0 ? " [New file]" : ""),
|
---|
1262 | IF_FEATURE_VI_READONLY(
|
---|
1263 | ((readonly_mode) ? " [Readonly]" : ""),
|
---|
1264 | )
|
---|
1265 | li, (int)(end - text)
|
---|
1266 | );
|
---|
1267 | } else if (strncmp(cmd, "file", i) == 0) { // what File is this
|
---|
1268 | if (b != -1 || e != -1) {
|
---|
1269 | status_line_bold("No address allowed on this command");
|
---|
1270 | goto ret;
|
---|
1271 | }
|
---|
1272 | if (args[0]) {
|
---|
1273 | // user wants a new filename
|
---|
1274 | free(current_filename);
|
---|
1275 | current_filename = xstrdup(args);
|
---|
1276 | } else {
|
---|
1277 | // user wants file status info
|
---|
1278 | last_status_cksum = 0; // force status update
|
---|
1279 | }
|
---|
1280 | } else if (strncmp(cmd, "features", i) == 0) { // what features are available
|
---|
1281 | // print out values of all features
|
---|
1282 | go_bottom_and_clear_to_eol();
|
---|
1283 | cookmode();
|
---|
1284 | show_help();
|
---|
1285 | rawmode();
|
---|
1286 | Hit_Return();
|
---|
1287 | } else if (strncmp(cmd, "list", i) == 0) { // literal print line
|
---|
1288 | if (b < 0) { // no addr given- use defaults
|
---|
1289 | q = begin_line(dot); // assume .,. for the range
|
---|
1290 | r = end_line(dot);
|
---|
1291 | }
|
---|
1292 | go_bottom_and_clear_to_eol();
|
---|
1293 | puts("\r");
|
---|
1294 | for (; q <= r; q++) {
|
---|
1295 | int c_is_no_print;
|
---|
1296 |
|
---|
1297 | c = *q;
|
---|
1298 | c_is_no_print = (c & 0x80) && !Isprint(c);
|
---|
1299 | if (c_is_no_print) {
|
---|
1300 | c = '.';
|
---|
1301 | standout_start();
|
---|
1302 | }
|
---|
1303 | if (c == '\n') {
|
---|
1304 | write1("$\r");
|
---|
1305 | } else if (c < ' ' || c == 127) {
|
---|
1306 | bb_putchar('^');
|
---|
1307 | if (c == 127)
|
---|
1308 | c = '?';
|
---|
1309 | else
|
---|
1310 | c += '@';
|
---|
1311 | }
|
---|
1312 | bb_putchar(c);
|
---|
1313 | if (c_is_no_print)
|
---|
1314 | standout_end();
|
---|
1315 | }
|
---|
1316 | Hit_Return();
|
---|
1317 | } else if (strncmp(cmd, "quit", i) == 0 // quit
|
---|
1318 | || strncmp(cmd, "next", i) == 0 // edit next file
|
---|
1319 | || strncmp(cmd, "prev", i) == 0 // edit previous file
|
---|
1320 | ) {
|
---|
1321 | int n;
|
---|
1322 | if (useforce) {
|
---|
1323 | if (*cmd == 'q') {
|
---|
1324 | // force end of argv list
|
---|
1325 | optind = save_argc;
|
---|
1326 | }
|
---|
1327 | editing = 0;
|
---|
1328 | goto ret;
|
---|
1329 | }
|
---|
1330 | // don't exit if the file been modified
|
---|
1331 | if (modified_count) {
|
---|
1332 | status_line_bold("No write since last change (:%s! overrides)", cmd);
|
---|
1333 | goto ret;
|
---|
1334 | }
|
---|
1335 | // are there other file to edit
|
---|
1336 | n = save_argc - optind - 1;
|
---|
1337 | if (*cmd == 'q' && n > 0) {
|
---|
1338 | status_line_bold("%d more file(s) to edit", n);
|
---|
1339 | goto ret;
|
---|
1340 | }
|
---|
1341 | if (*cmd == 'n' && n <= 0) {
|
---|
1342 | status_line_bold("No more files to edit");
|
---|
1343 | goto ret;
|
---|
1344 | }
|
---|
1345 | if (*cmd == 'p') {
|
---|
1346 | // are there previous files to edit
|
---|
1347 | if (optind < 1) {
|
---|
1348 | status_line_bold("No previous files to edit");
|
---|
1349 | goto ret;
|
---|
1350 | }
|
---|
1351 | optind -= 2;
|
---|
1352 | }
|
---|
1353 | editing = 0;
|
---|
1354 | } else if (strncmp(cmd, "read", i) == 0) { // read file into text[]
|
---|
1355 | int size;
|
---|
1356 |
|
---|
1357 | fn = args;
|
---|
1358 | if (!fn[0]) {
|
---|
1359 | status_line_bold("No filename given");
|
---|
1360 | goto ret;
|
---|
1361 | }
|
---|
1362 | if (b < 0) { // no addr given- use defaults
|
---|
1363 | q = begin_line(dot); // assume "dot"
|
---|
1364 | }
|
---|
1365 | // read after current line- unless user said ":0r foo"
|
---|
1366 | if (b != 0) {
|
---|
1367 | q = next_line(q);
|
---|
1368 | // read after last line
|
---|
1369 | if (q == end-1)
|
---|
1370 | ++q;
|
---|
1371 | }
|
---|
1372 | { // dance around potentially-reallocated text[]
|
---|
1373 | uintptr_t ofs = q - text;
|
---|
1374 | size = file_insert(fn, q, 0);
|
---|
1375 | q = text + ofs;
|
---|
1376 | }
|
---|
1377 | if (size < 0)
|
---|
1378 | goto ret; // nothing was inserted
|
---|
1379 | // how many lines in text[]?
|
---|
1380 | li = count_lines(q, q + size - 1);
|
---|
1381 | status_line("'%s'"
|
---|
1382 | IF_FEATURE_VI_READONLY("%s")
|
---|
1383 | " %dL, %dC",
|
---|
1384 | fn,
|
---|
1385 | IF_FEATURE_VI_READONLY((readonly_mode ? " [Readonly]" : ""),)
|
---|
1386 | li, size
|
---|
1387 | );
|
---|
1388 | if (size > 0) {
|
---|
1389 | // if the insert is before "dot" then we need to update
|
---|
1390 | if (q <= dot)
|
---|
1391 | dot += size;
|
---|
1392 | }
|
---|
1393 | } else if (strncmp(cmd, "rewind", i) == 0) { // rewind cmd line args
|
---|
1394 | if (modified_count && !useforce) {
|
---|
1395 | status_line_bold("No write since last change (:%s! overrides)", cmd);
|
---|
1396 | } else {
|
---|
1397 | // reset the filenames to edit
|
---|
1398 | optind = -1; /* start from 0th file */
|
---|
1399 | editing = 0;
|
---|
1400 | }
|
---|
1401 | #if ENABLE_FEATURE_VI_SET
|
---|
1402 | } else if (strncmp(cmd, "set", i) == 0) { // set or clear features
|
---|
1403 | #if ENABLE_FEATURE_VI_SETOPTS
|
---|
1404 | char *argp;
|
---|
1405 | #endif
|
---|
1406 | i = 0; // offset into args
|
---|
1407 | // only blank is regarded as args delimiter. What about tab '\t'?
|
---|
1408 | if (!args[0] || strcasecmp(args, "all") == 0) {
|
---|
1409 | // print out values of all options
|
---|
1410 | #if ENABLE_FEATURE_VI_SETOPTS
|
---|
1411 | status_line_bold(
|
---|
1412 | "%sautoindent "
|
---|
1413 | "%sflash "
|
---|
1414 | "%signorecase "
|
---|
1415 | "%sshowmatch "
|
---|
1416 | "tabstop=%u",
|
---|
1417 | autoindent ? "" : "no",
|
---|
1418 | err_method ? "" : "no",
|
---|
1419 | ignorecase ? "" : "no",
|
---|
1420 | showmatch ? "" : "no",
|
---|
1421 | tabstop
|
---|
1422 | );
|
---|
1423 | #endif
|
---|
1424 | goto ret;
|
---|
1425 | }
|
---|
1426 | #if ENABLE_FEATURE_VI_SETOPTS
|
---|
1427 | argp = args;
|
---|
1428 | while (*argp) {
|
---|
1429 | if (strncmp(argp, "no", 2) == 0)
|
---|
1430 | i = 2; // ":set noautoindent"
|
---|
1431 | setops(argp, "autoindent ", i, "ai", VI_AUTOINDENT);
|
---|
1432 | setops(argp, "flash " , i, "fl", VI_ERR_METHOD);
|
---|
1433 | setops(argp, "ignorecase ", i, "ic", VI_IGNORECASE);
|
---|
1434 | setops(argp, "showmatch " , i, "sm", VI_SHOWMATCH );
|
---|
1435 | if (strncmp(argp + i, "tabstop=", 8) == 0) {
|
---|
1436 | int t = 0;
|
---|
1437 | sscanf(argp + i+8, "%u", &t);
|
---|
1438 | if (t > 0 && t <= MAX_TABSTOP)
|
---|
1439 | tabstop = t;
|
---|
1440 | }
|
---|
1441 | argp = skip_non_whitespace(argp);
|
---|
1442 | argp = skip_whitespace(argp);
|
---|
1443 | }
|
---|
1444 | #endif /* FEATURE_VI_SETOPTS */
|
---|
1445 | #endif /* FEATURE_VI_SET */
|
---|
1446 | #if ENABLE_FEATURE_VI_SEARCH
|
---|
1447 | } else if (cmd[0] == 's') { // substitute a pattern with a replacement pattern
|
---|
1448 | char *F, *R, *flags;
|
---|
1449 | size_t len_F, len_R;
|
---|
1450 | int gflag; // global replace flag
|
---|
1451 | #if ENABLE_FEATURE_VI_UNDO
|
---|
1452 | int dont_chain_first_item = ALLOW_UNDO;
|
---|
1453 | #endif
|
---|
1454 |
|
---|
1455 | // F points to the "find" pattern
|
---|
1456 | // R points to the "replace" pattern
|
---|
1457 | // replace the cmd line delimiters "/" with NULs
|
---|
1458 | c = orig_buf[1]; // what is the delimiter
|
---|
1459 | F = orig_buf + 2; // start of "find"
|
---|
1460 | R = strchr(F, c); // middle delimiter
|
---|
1461 | if (!R)
|
---|
1462 | goto colon_s_fail;
|
---|
1463 | len_F = R - F;
|
---|
1464 | *R++ = '\0'; // terminate "find"
|
---|
1465 | flags = strchr(R, c);
|
---|
1466 | if (!flags)
|
---|
1467 | goto colon_s_fail;
|
---|
1468 | len_R = flags - R;
|
---|
1469 | *flags++ = '\0'; // terminate "replace"
|
---|
1470 | gflag = *flags;
|
---|
1471 |
|
---|
1472 | q = begin_line(q);
|
---|
1473 | if (b < 0) { // maybe :s/foo/bar/
|
---|
1474 | q = begin_line(dot); // start with cur line
|
---|
1475 | b = count_lines(text, q); // cur line number
|
---|
1476 | }
|
---|
1477 | if (e < 0)
|
---|
1478 | e = b; // maybe :.s/foo/bar/
|
---|
1479 |
|
---|
1480 | for (i = b; i <= e; i++) { // so, :20,23 s \0 find \0 replace \0
|
---|
1481 | char *ls = q; // orig line start
|
---|
1482 | char *found;
|
---|
1483 | vc4:
|
---|
1484 | found = char_search(q, F, FORWARD, LIMITED); // search cur line only for "find"
|
---|
1485 | if (found) {
|
---|
1486 | uintptr_t bias;
|
---|
1487 | // we found the "find" pattern - delete it
|
---|
1488 | // For undo support, the first item should not be chained
|
---|
1489 | text_hole_delete(found, found + len_F - 1, dont_chain_first_item);
|
---|
1490 | #if ENABLE_FEATURE_VI_UNDO
|
---|
1491 | dont_chain_first_item = ALLOW_UNDO_CHAIN;
|
---|
1492 | #endif
|
---|
1493 | // insert the "replace" patern
|
---|
1494 | bias = string_insert(found, R, ALLOW_UNDO_CHAIN);
|
---|
1495 | found += bias;
|
---|
1496 | ls += bias;
|
---|
1497 | /*q += bias; - recalculated anyway */
|
---|
1498 | // check for "global" :s/foo/bar/g
|
---|
1499 | if (gflag == 'g') {
|
---|
1500 | if ((found + len_R) < end_line(ls)) {
|
---|
1501 | q = found + len_R;
|
---|
1502 | goto vc4; // don't let q move past cur line
|
---|
1503 | }
|
---|
1504 | }
|
---|
1505 | }
|
---|
1506 | q = next_line(ls);
|
---|
1507 | }
|
---|
1508 | #endif /* FEATURE_VI_SEARCH */
|
---|
1509 | } else if (strncmp(cmd, "version", i) == 0) { // show software version
|
---|
1510 | status_line(BB_VER " " BB_BT);
|
---|
1511 | } else if (strncmp(cmd, "write", i) == 0 // write text to file
|
---|
1512 | || strncmp(cmd, "wq", i) == 0
|
---|
1513 | || strncmp(cmd, "wn", i) == 0
|
---|
1514 | || (cmd[0] == 'x' && !cmd[1])
|
---|
1515 | ) {
|
---|
1516 | int size;
|
---|
1517 | //int forced = FALSE;
|
---|
1518 |
|
---|
1519 | // is there a file name to write to?
|
---|
1520 | if (args[0]) {
|
---|
1521 | fn = args;
|
---|
1522 | }
|
---|
1523 | #if ENABLE_FEATURE_VI_READONLY
|
---|
1524 | if (readonly_mode && !useforce) {
|
---|
1525 | status_line_bold("'%s' is read only", fn);
|
---|
1526 | goto ret;
|
---|
1527 | }
|
---|
1528 | #endif
|
---|
1529 | // how many lines in text[]?
|
---|
1530 | li = count_lines(q, r);
|
---|
1531 | size = r - q + 1;
|
---|
1532 | //if (useforce) {
|
---|
1533 | // if "fn" is not write-able, chmod u+w
|
---|
1534 | // sprintf(syscmd, "chmod u+w %s", fn);
|
---|
1535 | // system(syscmd);
|
---|
1536 | // forced = TRUE;
|
---|
1537 | //}
|
---|
1538 | l = file_write(fn, q, r);
|
---|
1539 | //if (useforce && forced) {
|
---|
1540 | // chmod u-w
|
---|
1541 | // sprintf(syscmd, "chmod u-w %s", fn);
|
---|
1542 | // system(syscmd);
|
---|
1543 | // forced = FALSE;
|
---|
1544 | //}
|
---|
1545 | if (l < 0) {
|
---|
1546 | if (l == -1)
|
---|
1547 | status_line_bold_errno(fn);
|
---|
1548 | } else {
|
---|
1549 | status_line("'%s' %dL, %dC", fn, li, l);
|
---|
1550 | if (q == text && r == end - 1 && l == size) {
|
---|
1551 | modified_count = 0;
|
---|
1552 | last_modified_count = -1;
|
---|
1553 | }
|
---|
1554 | if ((cmd[0] == 'x' || cmd[1] == 'q' || cmd[1] == 'n'
|
---|
1555 | || cmd[0] == 'X' || cmd[1] == 'Q' || cmd[1] == 'N'
|
---|
1556 | )
|
---|
1557 | && l == size
|
---|
1558 | ) {
|
---|
1559 | editing = 0;
|
---|
1560 | }
|
---|
1561 | }
|
---|
1562 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
1563 | } else if (strncmp(cmd, "yank", i) == 0) { // yank lines
|
---|
1564 | if (b < 0) { // no addr given- use defaults
|
---|
1565 | q = begin_line(dot); // assume .,. for the range
|
---|
1566 | r = end_line(dot);
|
---|
1567 | }
|
---|
1568 | text_yank(q, r, YDreg);
|
---|
1569 | li = count_lines(q, r);
|
---|
1570 | status_line("Yank %d lines (%d chars) into [%c]",
|
---|
1571 | li, strlen(reg[YDreg]), what_reg());
|
---|
1572 | #endif
|
---|
1573 | } else {
|
---|
1574 | // cmd unknown
|
---|
1575 | not_implemented(cmd);
|
---|
1576 | }
|
---|
1577 | ret:
|
---|
1578 | dot = bound_dot(dot); // make sure "dot" is valid
|
---|
1579 | return;
|
---|
1580 | #if ENABLE_FEATURE_VI_SEARCH
|
---|
1581 | colon_s_fail:
|
---|
1582 | status_line(":s expression missing delimiters");
|
---|
1583 | #endif
|
---|
1584 | #endif /* FEATURE_VI_COLON */
|
---|
1585 | }
|
---|
1586 |
|
---|
1587 | static void Hit_Return(void)
|
---|
1588 | {
|
---|
1589 | int c;
|
---|
1590 |
|
---|
1591 | standout_start();
|
---|
1592 | write1("[Hit return to continue]");
|
---|
1593 | standout_end();
|
---|
1594 | while ((c = get_one_char()) != '\n' && c != '\r')
|
---|
1595 | continue;
|
---|
1596 | redraw(TRUE); // force redraw all
|
---|
1597 | }
|
---|
1598 |
|
---|
1599 | static int next_tabstop(int col)
|
---|
1600 | {
|
---|
1601 | return col + ((tabstop - 1) - (col % tabstop));
|
---|
1602 | }
|
---|
1603 |
|
---|
1604 | //----- Synchronize the cursor to Dot --------------------------
|
---|
1605 | static NOINLINE void sync_cursor(char *d, int *row, int *col)
|
---|
1606 | {
|
---|
1607 | char *beg_cur; // begin and end of "d" line
|
---|
1608 | char *tp;
|
---|
1609 | int cnt, ro, co;
|
---|
1610 | #ifdef ENABLE_BASIC_MULTI_CHAR_CODE
|
---|
1611 | int last_code_size = 0;
|
---|
1612 | #endif
|
---|
1613 |
|
---|
1614 | beg_cur = begin_line(d); // first char of cur line
|
---|
1615 |
|
---|
1616 | if (beg_cur < screenbegin) {
|
---|
1617 | // "d" is before top line on screen
|
---|
1618 | // how many lines do we have to move
|
---|
1619 | cnt = count_lines(beg_cur, screenbegin);
|
---|
1620 | sc1:
|
---|
1621 | screenbegin = beg_cur;
|
---|
1622 | if (cnt > (rows - 1) / 2) {
|
---|
1623 | // we moved too many lines. put "dot" in middle of screen
|
---|
1624 | for (cnt = 0; cnt < (rows - 1) / 2; cnt++) {
|
---|
1625 | screenbegin = prev_line(screenbegin);
|
---|
1626 | }
|
---|
1627 | }
|
---|
1628 | } else {
|
---|
1629 | char *end_scr; // begin and end of screen
|
---|
1630 | end_scr = end_screen(); // last char of screen
|
---|
1631 | if (beg_cur > end_scr) {
|
---|
1632 | // "d" is after bottom line on screen
|
---|
1633 | // how many lines do we have to move
|
---|
1634 | cnt = count_lines(end_scr, beg_cur);
|
---|
1635 | if (cnt > (rows - 1) / 2)
|
---|
1636 | goto sc1; // too many lines
|
---|
1637 | for (ro = 0; ro < cnt - 1; ro++) {
|
---|
1638 | // move screen begin the same amount
|
---|
1639 | screenbegin = next_line(screenbegin);
|
---|
1640 | // now, move the end of screen
|
---|
1641 | end_scr = next_line(end_scr);
|
---|
1642 | end_scr = end_line(end_scr);
|
---|
1643 | }
|
---|
1644 | }
|
---|
1645 | }
|
---|
1646 | // "d" is on screen- find out which row
|
---|
1647 | tp = screenbegin;
|
---|
1648 | for (ro = 0; ro < rows - 1; ro++) { // drive "ro" to correct row
|
---|
1649 | if (tp == beg_cur)
|
---|
1650 | break;
|
---|
1651 | tp = next_line(tp);
|
---|
1652 | }
|
---|
1653 |
|
---|
1654 | // find out what col "d" is on
|
---|
1655 | co = 0;
|
---|
1656 | while (tp < d) { // drive "co" to correct column
|
---|
1657 | if (*tp == '\n') //vda || *tp == '\0')
|
---|
1658 | break;
|
---|
1659 | if (*tp == '\t') {
|
---|
1660 | // handle tabs like real vi
|
---|
1661 | if (d == tp && cmd_mode) {
|
---|
1662 | break;
|
---|
1663 | }
|
---|
1664 | co = next_tabstop(co);
|
---|
1665 | } else if ((unsigned char)*tp < ' ' || *tp == 0x7f) {
|
---|
1666 | co++; // display as ^X, use 2 columns
|
---|
1667 | }
|
---|
1668 | #ifndef ENABLE_BASIC_MULTI_CHAR_CODE
|
---|
1669 | co++;
|
---|
1670 | tp++;
|
---|
1671 | #else
|
---|
1672 | unsigned short tmp_code;
|
---|
1673 | int code_size;
|
---|
1674 | tmp_code = Utf8_to_Utf16(tp, &code_size);
|
---|
1675 | co += (code_size > 1 ? 2 : code_size);
|
---|
1676 | tp += code_size;
|
---|
1677 | last_code_size = code_size;
|
---|
1678 | #endif
|
---|
1679 | }
|
---|
1680 |
|
---|
1681 | // "co" is the column where "dot" is.
|
---|
1682 | // The screen has "columns" columns.
|
---|
1683 | // The currently displayed columns are 0+offset -- columns+ofset
|
---|
1684 | // |-------------------------------------------------------------|
|
---|
1685 | // ^ ^ ^
|
---|
1686 | // offset | |------- columns ----------------|
|
---|
1687 | //
|
---|
1688 | // If "co" is already in this range then we do not have to adjust offset
|
---|
1689 | // but, we do have to subtract the "offset" bias from "co".
|
---|
1690 | // If "co" is outside this range then we have to change "offset".
|
---|
1691 | // If the first char of a line is a tab the cursor will try to stay
|
---|
1692 | // in column 7, but we have to set offset to 0.
|
---|
1693 |
|
---|
1694 | if (co < 0 + offset) {
|
---|
1695 | offset = co;
|
---|
1696 | }
|
---|
1697 | if (co >= columns + offset) {
|
---|
1698 | #ifndef ENABLE_BASIC_MULTI_CHAR_CODE
|
---|
1699 | offset = co - columns + 1;
|
---|
1700 | #else
|
---|
1701 | offset = co - columns + (last_code_size > 1 ? 2 : 1);
|
---|
1702 | #endif
|
---|
1703 | }
|
---|
1704 | // if the first char of the line is a tab, and "dot" is sitting on it
|
---|
1705 | // force offset to 0.
|
---|
1706 | if (d == beg_cur && *d == '\t') {
|
---|
1707 | offset = 0;
|
---|
1708 | }
|
---|
1709 | co -= offset;
|
---|
1710 |
|
---|
1711 | *row = ro;
|
---|
1712 | *col = co;
|
---|
1713 | }
|
---|
1714 |
|
---|
1715 | //----- Text Movement Routines ---------------------------------
|
---|
1716 | static char *begin_line(char *p) // return pointer to first char cur line
|
---|
1717 | {
|
---|
1718 | if (p > text) {
|
---|
1719 | p = memrchr(text, '\n', p - text);
|
---|
1720 | if (!p)
|
---|
1721 | return text;
|
---|
1722 | return p + 1;
|
---|
1723 | }
|
---|
1724 | return p;
|
---|
1725 | }
|
---|
1726 |
|
---|
1727 | static char *end_line(char *p) // return pointer to NL of cur line
|
---|
1728 | {
|
---|
1729 | if (p < end - 1) {
|
---|
1730 | p = memchr(p, '\n', end - p - 1);
|
---|
1731 | if (!p)
|
---|
1732 | return end - 1;
|
---|
1733 | }
|
---|
1734 | return p;
|
---|
1735 | }
|
---|
1736 |
|
---|
1737 | static char *dollar_line(char *p) // return pointer to just before NL line
|
---|
1738 | {
|
---|
1739 | p = end_line(p);
|
---|
1740 | // Try to stay off of the Newline
|
---|
1741 | if (*p == '\n' && (p - begin_line(p)) > 0)
|
---|
1742 | p--;
|
---|
1743 | return p;
|
---|
1744 | }
|
---|
1745 |
|
---|
1746 | static char *prev_line(char *p) // return pointer first char prev line
|
---|
1747 | {
|
---|
1748 | p = begin_line(p); // goto beginning of cur line
|
---|
1749 | if (p > text && p[-1] == '\n')
|
---|
1750 | p--; // step to prev line
|
---|
1751 | p = begin_line(p); // goto beginning of prev line
|
---|
1752 | return p;
|
---|
1753 | }
|
---|
1754 |
|
---|
1755 | static char *next_line(char *p) // return pointer first char next line
|
---|
1756 | {
|
---|
1757 | p = end_line(p);
|
---|
1758 | if (p < end - 1 && *p == '\n')
|
---|
1759 | p++; // step to next line
|
---|
1760 | return p;
|
---|
1761 | }
|
---|
1762 |
|
---|
1763 | //----- Text Information Routines ------------------------------
|
---|
1764 | static char *end_screen(void)
|
---|
1765 | {
|
---|
1766 | char *q;
|
---|
1767 | int cnt;
|
---|
1768 |
|
---|
1769 | // find new bottom line
|
---|
1770 | q = screenbegin;
|
---|
1771 | for (cnt = 0; cnt < rows - 2; cnt++)
|
---|
1772 | q = next_line(q);
|
---|
1773 | q = end_line(q);
|
---|
1774 | return q;
|
---|
1775 | }
|
---|
1776 |
|
---|
1777 | // count line from start to stop
|
---|
1778 | static int count_lines(char *start, char *stop)
|
---|
1779 | {
|
---|
1780 | char *q;
|
---|
1781 | int cnt;
|
---|
1782 |
|
---|
1783 | if (stop < start) { // start and stop are backwards- reverse them
|
---|
1784 | q = start;
|
---|
1785 | start = stop;
|
---|
1786 | stop = q;
|
---|
1787 | }
|
---|
1788 | cnt = 0;
|
---|
1789 | stop = end_line(stop);
|
---|
1790 | while (start <= stop && start <= end - 1) {
|
---|
1791 | start = end_line(start);
|
---|
1792 | if (*start == '\n')
|
---|
1793 | cnt++;
|
---|
1794 | start++;
|
---|
1795 | }
|
---|
1796 | return cnt;
|
---|
1797 | }
|
---|
1798 |
|
---|
1799 | static char *find_line(int li) // find beginning of line #li
|
---|
1800 | {
|
---|
1801 | char *q;
|
---|
1802 |
|
---|
1803 | for (q = text; li > 1; li--) {
|
---|
1804 | q = next_line(q);
|
---|
1805 | }
|
---|
1806 | return q;
|
---|
1807 | }
|
---|
1808 |
|
---|
1809 | //----- Dot Movement Routines ----------------------------------
|
---|
1810 | static void dot_left(void)
|
---|
1811 | {
|
---|
1812 | undo_queue_commit();
|
---|
1813 | if (dot > text && dot[-1] != '\n')
|
---|
1814 | #ifndef ENABLE_BASIC_MULTI_CHAR_CODE
|
---|
1815 | dot--;
|
---|
1816 | #else
|
---|
1817 | dot -= bs_char_count(text, dot - text - 1);
|
---|
1818 | #endif
|
---|
1819 | }
|
---|
1820 |
|
---|
1821 | static void dot_right(void)
|
---|
1822 | {
|
---|
1823 | undo_queue_commit();
|
---|
1824 | if (dot < end - 1 && *dot != '\n')
|
---|
1825 | #ifndef ENABLE_BASIC_MULTI_CHAR_CODE
|
---|
1826 | dot++;
|
---|
1827 | #else
|
---|
1828 | {
|
---|
1829 | int code_size;
|
---|
1830 | unsigned short tmp_code = Utf8_to_Utf16(dot, &code_size);
|
---|
1831 | if (dot[code_size - 1] != '\n')
|
---|
1832 | dot += code_size;
|
---|
1833 | }
|
---|
1834 | #endif
|
---|
1835 | }
|
---|
1836 |
|
---|
1837 | static void dot_begin(void)
|
---|
1838 | {
|
---|
1839 | undo_queue_commit();
|
---|
1840 | dot = begin_line(dot); // return pointer to first char cur line
|
---|
1841 | }
|
---|
1842 |
|
---|
1843 | static void dot_end(void)
|
---|
1844 | {
|
---|
1845 | undo_queue_commit();
|
---|
1846 | dot = end_line(dot); // return pointer to last char cur line
|
---|
1847 | }
|
---|
1848 |
|
---|
1849 | static char *move_to_col(char *p, int l)
|
---|
1850 | {
|
---|
1851 | int co;
|
---|
1852 |
|
---|
1853 | p = begin_line(p);
|
---|
1854 | co = 0;
|
---|
1855 | while (co < l && p < end) {
|
---|
1856 | if (*p == '\n') //vda || *p == '\0')
|
---|
1857 | break;
|
---|
1858 | if (*p == '\t') {
|
---|
1859 | #ifndef ENABLE_BASIC_MULTI_CHAR_CODE
|
---|
1860 | co = next_tabstop(co);
|
---|
1861 | #else
|
---|
1862 | co += tabstop;
|
---|
1863 | p++;
|
---|
1864 | #endif
|
---|
1865 | }
|
---|
1866 | #ifndef ENABLE_BASIC_MULTI_CHAR_CODE
|
---|
1867 | else if (*p < ' ' || *p == 127) {
|
---|
1868 | co++; // display as ^X, use 2 columns
|
---|
1869 | }
|
---|
1870 | co++;
|
---|
1871 | p++;
|
---|
1872 | #else
|
---|
1873 | else {
|
---|
1874 | int code_size, tmp_co;
|
---|
1875 | char *tmp_p;
|
---|
1876 | unsigned short tmp_code = Utf8_to_Utf16(p, &code_size);
|
---|
1877 | tmp_co = co + (code_size > 1 ? 2 : 1);
|
---|
1878 | if (tmp_co > l)
|
---|
1879 | break;
|
---|
1880 | else
|
---|
1881 | co = tmp_co;
|
---|
1882 | tmp_p = p + code_size;
|
---|
1883 | if (tmp_p > end)
|
---|
1884 | break;
|
---|
1885 | else
|
---|
1886 | p = tmp_p;
|
---|
1887 | }
|
---|
1888 | #endif
|
---|
1889 | }
|
---|
1890 | return p;
|
---|
1891 | }
|
---|
1892 |
|
---|
1893 | static void dot_next(void)
|
---|
1894 | {
|
---|
1895 | undo_queue_commit();
|
---|
1896 | dot = next_line(dot);
|
---|
1897 | }
|
---|
1898 |
|
---|
1899 | static void dot_prev(void)
|
---|
1900 | {
|
---|
1901 | undo_queue_commit();
|
---|
1902 | dot = prev_line(dot);
|
---|
1903 | }
|
---|
1904 |
|
---|
1905 | static void dot_scroll(int cnt, int dir)
|
---|
1906 | {
|
---|
1907 | char *q;
|
---|
1908 |
|
---|
1909 | undo_queue_commit();
|
---|
1910 | for (; cnt > 0; cnt--) {
|
---|
1911 | if (dir < 0) {
|
---|
1912 | // scroll Backwards
|
---|
1913 | // ctrl-Y scroll up one line
|
---|
1914 | screenbegin = prev_line(screenbegin);
|
---|
1915 | } else {
|
---|
1916 | // scroll Forwards
|
---|
1917 | // ctrl-E scroll down one line
|
---|
1918 | screenbegin = next_line(screenbegin);
|
---|
1919 | }
|
---|
1920 | }
|
---|
1921 | // make sure "dot" stays on the screen so we dont scroll off
|
---|
1922 | if (dot < screenbegin)
|
---|
1923 | dot = screenbegin;
|
---|
1924 | q = end_screen(); // find new bottom line
|
---|
1925 | if (dot > q)
|
---|
1926 | dot = begin_line(q); // is dot is below bottom line?
|
---|
1927 | dot_skip_over_ws();
|
---|
1928 | }
|
---|
1929 |
|
---|
1930 | static void dot_skip_over_ws(void)
|
---|
1931 | {
|
---|
1932 | // skip WS
|
---|
1933 | while (isspace(*dot) && *dot != '\n' && dot < end - 1)
|
---|
1934 | dot++;
|
---|
1935 | }
|
---|
1936 |
|
---|
1937 | static char *bound_dot(char *p) // make sure text[0] <= P < "end"
|
---|
1938 | {
|
---|
1939 | if (p >= end && end > text) {
|
---|
1940 | p = end - 1;
|
---|
1941 | indicate_error();
|
---|
1942 | }
|
---|
1943 | if (p < text) {
|
---|
1944 | p = text;
|
---|
1945 | indicate_error();
|
---|
1946 | }
|
---|
1947 | return p;
|
---|
1948 | }
|
---|
1949 |
|
---|
1950 | //----- Helper Utility Routines --------------------------------
|
---|
1951 |
|
---|
1952 | //----------------------------------------------------------------
|
---|
1953 | //----- Char Routines --------------------------------------------
|
---|
1954 | /* Chars that are part of a word-
|
---|
1955 | * 0123456789_ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz
|
---|
1956 | * Chars that are Not part of a word (stoppers)
|
---|
1957 | * !"#$%&'()*+,-./:;<=>?@[\]^`{|}~
|
---|
1958 | * Chars that are WhiteSpace
|
---|
1959 | * TAB NEWLINE VT FF RETURN SPACE
|
---|
1960 | * DO NOT COUNT NEWLINE AS WHITESPACE
|
---|
1961 | */
|
---|
1962 |
|
---|
1963 | static char *new_screen(int ro, int co)
|
---|
1964 | {
|
---|
1965 | int li;
|
---|
1966 | int internal_co = co;
|
---|
1967 | #ifdef ENABLE_BASIC_MULTI_CHAR_CODE
|
---|
1968 | internal_co *= MULTI_BYTE_MULTIPLE;
|
---|
1969 | #endif
|
---|
1970 |
|
---|
1971 | free(screen);
|
---|
1972 | screensize = ro * internal_co + 8;
|
---|
1973 | screen = xmalloc(screensize);
|
---|
1974 | // initialize the new screen. assume this will be a empty file.
|
---|
1975 | screen_erase();
|
---|
1976 | // non-existent text[] lines start with a tilde (~).
|
---|
1977 | for (li = 1; li < ro - 1; li++) {
|
---|
1978 | screen[(li * internal_co) + 0] = '~';
|
---|
1979 | }
|
---|
1980 | return screen;
|
---|
1981 | }
|
---|
1982 |
|
---|
1983 | #if ENABLE_FEATURE_VI_SEARCH
|
---|
1984 |
|
---|
1985 | # if ENABLE_FEATURE_VI_REGEX_SEARCH
|
---|
1986 |
|
---|
1987 | // search for pattern starting at p
|
---|
1988 | static char *char_search(char *p, const char *pat, int dir, int range)
|
---|
1989 | {
|
---|
1990 | struct re_pattern_buffer preg;
|
---|
1991 | const char *err;
|
---|
1992 | char *q;
|
---|
1993 | int i;
|
---|
1994 | int size;
|
---|
1995 |
|
---|
1996 | re_syntax_options = RE_SYNTAX_POSIX_EXTENDED;
|
---|
1997 | if (ignorecase)
|
---|
1998 | re_syntax_options = RE_SYNTAX_POSIX_EXTENDED | RE_ICASE;
|
---|
1999 |
|
---|
2000 | memset(&preg, 0, sizeof(preg));
|
---|
2001 | err = re_compile_pattern(pat, strlen(pat), &preg);
|
---|
2002 | if (err != NULL) {
|
---|
2003 | status_line_bold("bad search pattern '%s': %s", pat, err);
|
---|
2004 | return p;
|
---|
2005 | }
|
---|
2006 |
|
---|
2007 | // assume a LIMITED forward search
|
---|
2008 | q = end - 1;
|
---|
2009 | if (dir == BACK)
|
---|
2010 | q = text;
|
---|
2011 | // RANGE could be negative if we are searching backwards
|
---|
2012 | range = q - p;
|
---|
2013 | q = p;
|
---|
2014 | size = range;
|
---|
2015 | if (range < 0) {
|
---|
2016 | size = -size;
|
---|
2017 | q = p - size;
|
---|
2018 | if (q < text)
|
---|
2019 | q = text;
|
---|
2020 | }
|
---|
2021 | // search for the compiled pattern, preg, in p[]
|
---|
2022 | // range < 0: search backward
|
---|
2023 | // range > 0: search forward
|
---|
2024 | // 0 < start < size
|
---|
2025 | // re_search() < 0: not found or error
|
---|
2026 | // re_search() >= 0: index of found pattern
|
---|
2027 | // struct pattern char int int int struct reg
|
---|
2028 | // re_search(*pattern_buffer, *string, size, start, range, *regs)
|
---|
2029 | i = re_search(&preg, q, size, /*start:*/ 0, range, /*struct re_registers*:*/ NULL);
|
---|
2030 | regfree(&preg);
|
---|
2031 | if (i < 0)
|
---|
2032 | return NULL;
|
---|
2033 | if (dir == FORWARD)
|
---|
2034 | p = p + i;
|
---|
2035 | else
|
---|
2036 | p = p - i;
|
---|
2037 | return p;
|
---|
2038 | }
|
---|
2039 |
|
---|
2040 | # else
|
---|
2041 |
|
---|
2042 | # if ENABLE_FEATURE_VI_SETOPTS
|
---|
2043 | static int mycmp(const char *s1, const char *s2, int len)
|
---|
2044 | {
|
---|
2045 | if (ignorecase) {
|
---|
2046 | return strncasecmp(s1, s2, len);
|
---|
2047 | }
|
---|
2048 | return strncmp(s1, s2, len);
|
---|
2049 | }
|
---|
2050 | # else
|
---|
2051 | # define mycmp strncmp
|
---|
2052 | # endif
|
---|
2053 |
|
---|
2054 | static char *char_search(char *p, const char *pat, int dir, int range)
|
---|
2055 | {
|
---|
2056 | char *start, *stop;
|
---|
2057 | int len;
|
---|
2058 |
|
---|
2059 | len = strlen(pat);
|
---|
2060 | if (dir == FORWARD) {
|
---|
2061 | stop = end - 1; // assume range is p..end-1
|
---|
2062 | if (range == LIMITED)
|
---|
2063 | stop = next_line(p); // range is to next line
|
---|
2064 | for (start = p; start < stop; start++) {
|
---|
2065 | if (mycmp(start, pat, len) == 0) {
|
---|
2066 | return start;
|
---|
2067 | }
|
---|
2068 | }
|
---|
2069 | } else if (dir == BACK) {
|
---|
2070 | stop = text; // assume range is text..p
|
---|
2071 | if (range == LIMITED)
|
---|
2072 | stop = prev_line(p); // range is to prev line
|
---|
2073 | for (start = p - len; start >= stop; start--) {
|
---|
2074 | if (mycmp(start, pat, len) == 0) {
|
---|
2075 | return start;
|
---|
2076 | }
|
---|
2077 | }
|
---|
2078 | }
|
---|
2079 | // pattern not found
|
---|
2080 | return NULL;
|
---|
2081 | }
|
---|
2082 |
|
---|
2083 | # endif
|
---|
2084 |
|
---|
2085 | #endif /* FEATURE_VI_SEARCH */
|
---|
2086 |
|
---|
2087 | static char *char_insert(char *p, char c, int undo) // insert the char c at 'p'
|
---|
2088 | {
|
---|
2089 | if (c == 22) { // Is this an ctrl-V?
|
---|
2090 | p += stupid_insert(p, '^'); // use ^ to indicate literal next
|
---|
2091 | refresh(FALSE); // show the ^
|
---|
2092 | c = get_one_char();
|
---|
2093 | *p = c;
|
---|
2094 | #if ENABLE_FEATURE_VI_UNDO
|
---|
2095 | switch (undo) {
|
---|
2096 | case ALLOW_UNDO:
|
---|
2097 | undo_push(p, 1, UNDO_INS);
|
---|
2098 | break;
|
---|
2099 | case ALLOW_UNDO_CHAIN:
|
---|
2100 | undo_push(p, 1, UNDO_INS_CHAIN);
|
---|
2101 | break;
|
---|
2102 | # if ENABLE_FEATURE_VI_UNDO_QUEUE
|
---|
2103 | case ALLOW_UNDO_QUEUED:
|
---|
2104 | undo_push(p, 1, UNDO_INS_QUEUED);
|
---|
2105 | break;
|
---|
2106 | # endif
|
---|
2107 | }
|
---|
2108 | #else
|
---|
2109 | modified_count++;
|
---|
2110 | #endif /* ENABLE_FEATURE_VI_UNDO */
|
---|
2111 | p++;
|
---|
2112 | } else if (c == 27) { // Is this an ESC?
|
---|
2113 | cmd_mode = 0;
|
---|
2114 | undo_queue_commit();
|
---|
2115 | cmdcnt = 0;
|
---|
2116 | end_cmd_q(); // stop adding to q
|
---|
2117 | last_status_cksum = 0; // force status update
|
---|
2118 | if ((p[-1] != '\n') && (dot > text)) {
|
---|
2119 | #ifndef ENABLE_BASIC_MULTI_CHAR_CODE
|
---|
2120 | p--;
|
---|
2121 | #else
|
---|
2122 | p -= bs_char_count(text, (p - text - 1));
|
---|
2123 | #endif
|
---|
2124 | }
|
---|
2125 | } else if (c == erase_char || c == 8 || c == 127) { // Is this a BS
|
---|
2126 | if (p > text) {
|
---|
2127 | p--;
|
---|
2128 | p = text_hole_delete(p, p, ALLOW_UNDO_QUEUED); // shrink buffer 1 char
|
---|
2129 | }
|
---|
2130 | } else {
|
---|
2131 | // insert a char into text[]
|
---|
2132 | if (c == 13)
|
---|
2133 | c = '\n'; // translate \r to \n
|
---|
2134 | #if ENABLE_FEATURE_VI_UNDO
|
---|
2135 | # if ENABLE_FEATURE_VI_UNDO_QUEUE
|
---|
2136 | if (c == '\n')
|
---|
2137 | undo_queue_commit();
|
---|
2138 | # endif
|
---|
2139 | switch (undo) {
|
---|
2140 | case ALLOW_UNDO:
|
---|
2141 | undo_push(p, 1, UNDO_INS);
|
---|
2142 | break;
|
---|
2143 | case ALLOW_UNDO_CHAIN:
|
---|
2144 | undo_push(p, 1, UNDO_INS_CHAIN);
|
---|
2145 | break;
|
---|
2146 | # if ENABLE_FEATURE_VI_UNDO_QUEUE
|
---|
2147 | case ALLOW_UNDO_QUEUED:
|
---|
2148 | undo_push(p, 1, UNDO_INS_QUEUED);
|
---|
2149 | break;
|
---|
2150 | # endif
|
---|
2151 | }
|
---|
2152 | #else
|
---|
2153 | modified_count++;
|
---|
2154 | #endif /* ENABLE_FEATURE_VI_UNDO */
|
---|
2155 | p += 1 + stupid_insert(p, c); // insert the char
|
---|
2156 | #if ENABLE_FEATURE_VI_SETOPTS
|
---|
2157 | if (showmatch && strchr(")]}", c) != NULL) {
|
---|
2158 | showmatching(p - 1);
|
---|
2159 | }
|
---|
2160 | if (autoindent && c == '\n') { // auto indent the new line
|
---|
2161 | char *q;
|
---|
2162 | size_t len;
|
---|
2163 | q = prev_line(p); // use prev line as template
|
---|
2164 | len = strspn(q, " \t"); // space or tab
|
---|
2165 | if (len) {
|
---|
2166 | uintptr_t bias;
|
---|
2167 | bias = text_hole_make(p, len);
|
---|
2168 | p += bias;
|
---|
2169 | q += bias;
|
---|
2170 | #if ENABLE_FEATURE_VI_UNDO
|
---|
2171 | undo_push(p, len, UNDO_INS);
|
---|
2172 | #endif
|
---|
2173 | memcpy(p, q, len);
|
---|
2174 | p += len;
|
---|
2175 | }
|
---|
2176 | }
|
---|
2177 | #endif
|
---|
2178 | }
|
---|
2179 | return p;
|
---|
2180 | }
|
---|
2181 |
|
---|
2182 | // might reallocate text[]! use p += stupid_insert(p, ...),
|
---|
2183 | // and be careful to not use pointers into potentially freed text[]!
|
---|
2184 | static uintptr_t stupid_insert(char *p, char c) // stupidly insert the char c at 'p'
|
---|
2185 | {
|
---|
2186 | uintptr_t bias;
|
---|
2187 | bias = text_hole_make(p, 1);
|
---|
2188 | p += bias;
|
---|
2189 | *p = c;
|
---|
2190 | return bias;
|
---|
2191 | }
|
---|
2192 |
|
---|
2193 | static int find_range(char **start, char **stop, char c)
|
---|
2194 | {
|
---|
2195 | char *save_dot, *p, *q, *t;
|
---|
2196 | int cnt, multiline = 0;
|
---|
2197 |
|
---|
2198 | save_dot = dot;
|
---|
2199 | p = q = dot;
|
---|
2200 |
|
---|
2201 | if (strchr("cdy><", c)) {
|
---|
2202 | // these cmds operate on whole lines
|
---|
2203 | p = q = begin_line(p);
|
---|
2204 | for (cnt = 1; cnt < cmdcnt; cnt++) {
|
---|
2205 | q = next_line(q);
|
---|
2206 | }
|
---|
2207 | q = end_line(q);
|
---|
2208 | } else if (strchr("^%$0bBeEfth\b\177", c)) {
|
---|
2209 | // These cmds operate on char positions
|
---|
2210 | do_cmd(c); // execute movement cmd
|
---|
2211 | q = dot;
|
---|
2212 | } else if (strchr("wW", c)) {
|
---|
2213 | do_cmd(c); // execute movement cmd
|
---|
2214 | // if we are at the next word's first char
|
---|
2215 | // step back one char
|
---|
2216 | // but check the possibilities when it is true
|
---|
2217 | if (dot > text && ((isspace(dot[-1]) && !isspace(dot[0]))
|
---|
2218 | || (ispunct(dot[-1]) && !ispunct(dot[0]))
|
---|
2219 | || (isalnum(dot[-1]) && !isalnum(dot[0]))))
|
---|
2220 | dot--; // move back off of next word
|
---|
2221 | if (dot > text && *dot == '\n')
|
---|
2222 | dot--; // stay off NL
|
---|
2223 | q = dot;
|
---|
2224 | } else if (strchr("H-k{", c)) {
|
---|
2225 | // these operate on multi-lines backwards
|
---|
2226 | q = end_line(dot); // find NL
|
---|
2227 | do_cmd(c); // execute movement cmd
|
---|
2228 | dot_begin();
|
---|
2229 | p = dot;
|
---|
2230 | } else if (strchr("L+j}\r\n", c)) {
|
---|
2231 | // these operate on multi-lines forwards
|
---|
2232 | p = begin_line(dot);
|
---|
2233 | do_cmd(c); // execute movement cmd
|
---|
2234 | dot_end(); // find NL
|
---|
2235 | q = dot;
|
---|
2236 | } else {
|
---|
2237 | // nothing -- this causes any other values of c to
|
---|
2238 | // represent the one-character range under the
|
---|
2239 | // cursor. this is correct for ' ' and 'l', but
|
---|
2240 | // perhaps no others.
|
---|
2241 | //
|
---|
2242 | }
|
---|
2243 | if (q < p) {
|
---|
2244 | t = q;
|
---|
2245 | q = p;
|
---|
2246 | p = t;
|
---|
2247 | }
|
---|
2248 |
|
---|
2249 | // backward char movements don't include start position
|
---|
2250 | if (q > p && strchr("^0bBh\b\177", c)) q--;
|
---|
2251 |
|
---|
2252 | multiline = 0;
|
---|
2253 | for (t = p; t <= q; t++) {
|
---|
2254 | if (*t == '\n') {
|
---|
2255 | multiline = 1;
|
---|
2256 | break;
|
---|
2257 | }
|
---|
2258 | }
|
---|
2259 |
|
---|
2260 | *start = p;
|
---|
2261 | *stop = q;
|
---|
2262 | dot = save_dot;
|
---|
2263 | return multiline;
|
---|
2264 | }
|
---|
2265 |
|
---|
2266 | static int st_test(char *p, int type, int dir, char *tested)
|
---|
2267 | {
|
---|
2268 | char c, c0, ci;
|
---|
2269 | int test, inc;
|
---|
2270 |
|
---|
2271 | inc = dir;
|
---|
2272 | c = c0 = p[0];
|
---|
2273 | ci = p[inc];
|
---|
2274 | test = 0;
|
---|
2275 |
|
---|
2276 | if (type == S_BEFORE_WS) {
|
---|
2277 | c = ci;
|
---|
2278 | test = (!isspace(c) || c == '\n');
|
---|
2279 | }
|
---|
2280 | if (type == S_TO_WS) {
|
---|
2281 | c = c0;
|
---|
2282 | test = (!isspace(c) || c == '\n');
|
---|
2283 | }
|
---|
2284 | if (type == S_OVER_WS) {
|
---|
2285 | c = c0;
|
---|
2286 | test = isspace(c);
|
---|
2287 | }
|
---|
2288 | if (type == S_END_PUNCT) {
|
---|
2289 | c = ci;
|
---|
2290 | test = ispunct(c);
|
---|
2291 | }
|
---|
2292 | if (type == S_END_ALNUM) {
|
---|
2293 | c = ci;
|
---|
2294 | test = (isalnum(c) || c == '_');
|
---|
2295 | }
|
---|
2296 | *tested = c;
|
---|
2297 | return test;
|
---|
2298 | }
|
---|
2299 |
|
---|
2300 | static char *skip_thing(char *p, int linecnt, int dir, int type)
|
---|
2301 | {
|
---|
2302 | char c;
|
---|
2303 |
|
---|
2304 | while (st_test(p, type, dir, &c)) {
|
---|
2305 | // make sure we limit search to correct number of lines
|
---|
2306 | if (c == '\n' && --linecnt < 1)
|
---|
2307 | break;
|
---|
2308 | if (dir >= 0 && p >= end - 1)
|
---|
2309 | break;
|
---|
2310 | if (dir < 0 && p <= text)
|
---|
2311 | break;
|
---|
2312 | p += dir; // move to next char
|
---|
2313 | }
|
---|
2314 | return p;
|
---|
2315 | }
|
---|
2316 |
|
---|
2317 | // find matching char of pair () [] {}
|
---|
2318 | // will crash if c is not one of these
|
---|
2319 | static char *find_pair(char *p, const char c)
|
---|
2320 | {
|
---|
2321 | const char *braces = "()[]{}";
|
---|
2322 | char match;
|
---|
2323 | int dir, level;
|
---|
2324 |
|
---|
2325 | dir = strchr(braces, c) - braces;
|
---|
2326 | dir ^= 1;
|
---|
2327 | match = braces[dir];
|
---|
2328 | dir = ((dir & 1) << 1) - 1; /* 1 for ([{, -1 for )\} */
|
---|
2329 |
|
---|
2330 | // look for match, count levels of pairs (( ))
|
---|
2331 | level = 1;
|
---|
2332 | for (;;) {
|
---|
2333 | p += dir;
|
---|
2334 | if (p < text || p >= end)
|
---|
2335 | return NULL;
|
---|
2336 | if (*p == c)
|
---|
2337 | level++; // increase pair levels
|
---|
2338 | if (*p == match) {
|
---|
2339 | level--; // reduce pair level
|
---|
2340 | if (level == 0)
|
---|
2341 | return p; // found matching pair
|
---|
2342 | }
|
---|
2343 | }
|
---|
2344 | }
|
---|
2345 |
|
---|
2346 | #if ENABLE_FEATURE_VI_SETOPTS
|
---|
2347 | // show the matching char of a pair, () [] {}
|
---|
2348 | static void showmatching(char *p)
|
---|
2349 | {
|
---|
2350 | char *q, *save_dot;
|
---|
2351 |
|
---|
2352 | // we found half of a pair
|
---|
2353 | q = find_pair(p, *p); // get loc of matching char
|
---|
2354 | if (q == NULL) {
|
---|
2355 | indicate_error(); // no matching char
|
---|
2356 | } else {
|
---|
2357 | // "q" now points to matching pair
|
---|
2358 | save_dot = dot; // remember where we are
|
---|
2359 | dot = q; // go to new loc
|
---|
2360 | refresh(FALSE); // let the user see it
|
---|
2361 | mysleep(40); // give user some time
|
---|
2362 | dot = save_dot; // go back to old loc
|
---|
2363 | refresh(FALSE);
|
---|
2364 | }
|
---|
2365 | }
|
---|
2366 | #endif /* FEATURE_VI_SETOPTS */
|
---|
2367 |
|
---|
2368 | #if ENABLE_FEATURE_VI_UNDO
|
---|
2369 | static void flush_undo_data(void)
|
---|
2370 | {
|
---|
2371 | struct undo_object *undo_entry;
|
---|
2372 |
|
---|
2373 | while (undo_stack_tail) {
|
---|
2374 | undo_entry = undo_stack_tail;
|
---|
2375 | undo_stack_tail = undo_entry->prev;
|
---|
2376 | free(undo_entry);
|
---|
2377 | }
|
---|
2378 | }
|
---|
2379 |
|
---|
2380 | // Undo functions and hooks added by Jody Bruchon (jody@jodybruchon.com)
|
---|
2381 | static void undo_push(char *src, unsigned int length, uint8_t u_type) // Add to the undo stack
|
---|
2382 | {
|
---|
2383 | struct undo_object *undo_entry;
|
---|
2384 |
|
---|
2385 | // "u_type" values
|
---|
2386 | // UNDO_INS: insertion, undo will remove from buffer
|
---|
2387 | // UNDO_DEL: deleted text, undo will restore to buffer
|
---|
2388 | // UNDO_{INS,DEL}_CHAIN: Same as above but also calls undo_pop() when complete
|
---|
2389 | // The CHAIN operations are for handling multiple operations that the user
|
---|
2390 | // performs with a single action, i.e. REPLACE mode or find-and-replace commands
|
---|
2391 | // UNDO_{INS,DEL}_QUEUED: If queuing feature is enabled, allow use of the queue
|
---|
2392 | // for the INS/DEL operation. The raw values should be equal to the values of
|
---|
2393 | // UNDO_{INS,DEL} ORed with UNDO_QUEUED_FLAG
|
---|
2394 |
|
---|
2395 | #if ENABLE_FEATURE_VI_UNDO_QUEUE
|
---|
2396 | // This undo queuing functionality groups multiple character typing or backspaces
|
---|
2397 | // into a single large undo object. This greatly reduces calls to malloc() for
|
---|
2398 | // single-character operations while typing and has the side benefit of letting
|
---|
2399 | // an undo operation remove chunks of text rather than a single character.
|
---|
2400 | switch (u_type) {
|
---|
2401 | case UNDO_EMPTY: // Just in case this ever happens...
|
---|
2402 | return;
|
---|
2403 | case UNDO_DEL_QUEUED:
|
---|
2404 | if (length != 1)
|
---|
2405 | return; // Only queue single characters
|
---|
2406 | switch (undo_queue_state) {
|
---|
2407 | case UNDO_EMPTY:
|
---|
2408 | undo_queue_state = UNDO_DEL;
|
---|
2409 | case UNDO_DEL:
|
---|
2410 | undo_queue_spos = src;
|
---|
2411 | undo_q++;
|
---|
2412 | undo_queue[CONFIG_FEATURE_VI_UNDO_QUEUE_MAX - undo_q] = *src;
|
---|
2413 | // If queue is full, dump it into an object
|
---|
2414 | if (undo_q == CONFIG_FEATURE_VI_UNDO_QUEUE_MAX)
|
---|
2415 | undo_queue_commit();
|
---|
2416 | return;
|
---|
2417 | case UNDO_INS:
|
---|
2418 | // Switch from storing inserted text to deleted text
|
---|
2419 | undo_queue_commit();
|
---|
2420 | undo_push(src, length, UNDO_DEL_QUEUED);
|
---|
2421 | return;
|
---|
2422 | }
|
---|
2423 | break;
|
---|
2424 | case UNDO_INS_QUEUED:
|
---|
2425 | if (length != 1)
|
---|
2426 | return;
|
---|
2427 | switch (undo_queue_state) {
|
---|
2428 | case UNDO_EMPTY:
|
---|
2429 | undo_queue_state = UNDO_INS;
|
---|
2430 | undo_queue_spos = src;
|
---|
2431 | case UNDO_INS:
|
---|
2432 | undo_q++; // Don't need to save any data for insertions
|
---|
2433 | if (undo_q == CONFIG_FEATURE_VI_UNDO_QUEUE_MAX)
|
---|
2434 | undo_queue_commit();
|
---|
2435 | return;
|
---|
2436 | case UNDO_DEL:
|
---|
2437 | // Switch from storing deleted text to inserted text
|
---|
2438 | undo_queue_commit();
|
---|
2439 | undo_push(src, length, UNDO_INS_QUEUED);
|
---|
2440 | return;
|
---|
2441 | }
|
---|
2442 | break;
|
---|
2443 | }
|
---|
2444 | #else
|
---|
2445 | // If undo queuing is disabled, ignore the queuing flag entirely
|
---|
2446 | u_type = u_type & ~UNDO_QUEUED_FLAG;
|
---|
2447 | #endif
|
---|
2448 |
|
---|
2449 | // Allocate a new undo object
|
---|
2450 | if (u_type == UNDO_DEL || u_type == UNDO_DEL_CHAIN) {
|
---|
2451 | // For UNDO_DEL objects, save deleted text
|
---|
2452 | if ((src + length) == end)
|
---|
2453 | length--;
|
---|
2454 | // If this deletion empties text[], strip the newline. When the buffer becomes
|
---|
2455 | // zero-length, a newline is added back, which requires this to compensate.
|
---|
2456 | undo_entry = xzalloc(offsetof(struct undo_object, undo_text) + length);
|
---|
2457 | memcpy(undo_entry->undo_text, src, length);
|
---|
2458 | } else {
|
---|
2459 | undo_entry = xzalloc(sizeof(*undo_entry));
|
---|
2460 | }
|
---|
2461 | undo_entry->length = length;
|
---|
2462 | #if ENABLE_FEATURE_VI_UNDO_QUEUE
|
---|
2463 | if ((u_type & UNDO_USE_SPOS) != 0) {
|
---|
2464 | undo_entry->start = undo_queue_spos - text; // use start position from queue
|
---|
2465 | } else {
|
---|
2466 | undo_entry->start = src - text; // use offset from start of text buffer
|
---|
2467 | }
|
---|
2468 | u_type = (u_type & ~UNDO_USE_SPOS);
|
---|
2469 | #else
|
---|
2470 | undo_entry->start = src - text;
|
---|
2471 | #endif
|
---|
2472 | undo_entry->u_type = u_type;
|
---|
2473 |
|
---|
2474 | // Push it on undo stack
|
---|
2475 | undo_entry->prev = undo_stack_tail;
|
---|
2476 | undo_stack_tail = undo_entry;
|
---|
2477 | modified_count++;
|
---|
2478 | }
|
---|
2479 |
|
---|
2480 | static void undo_pop(void) // Undo the last operation
|
---|
2481 | {
|
---|
2482 | int repeat;
|
---|
2483 | char *u_start, *u_end;
|
---|
2484 | struct undo_object *undo_entry;
|
---|
2485 |
|
---|
2486 | // Commit pending undo queue before popping (should be unnecessary)
|
---|
2487 | undo_queue_commit();
|
---|
2488 |
|
---|
2489 | undo_entry = undo_stack_tail;
|
---|
2490 | // Check for an empty undo stack
|
---|
2491 | if (!undo_entry) {
|
---|
2492 | status_line("Already at oldest change");
|
---|
2493 | return;
|
---|
2494 | }
|
---|
2495 |
|
---|
2496 | switch (undo_entry->u_type) {
|
---|
2497 | case UNDO_DEL:
|
---|
2498 | case UNDO_DEL_CHAIN:
|
---|
2499 | // make hole and put in text that was deleted; deallocate text
|
---|
2500 | u_start = text + undo_entry->start;
|
---|
2501 | text_hole_make(u_start, undo_entry->length);
|
---|
2502 | memcpy(u_start, undo_entry->undo_text, undo_entry->length);
|
---|
2503 | status_line("Undo [%d] %s %d chars at position %d",
|
---|
2504 | modified_count, "restored",
|
---|
2505 | undo_entry->length, undo_entry->start
|
---|
2506 | );
|
---|
2507 | break;
|
---|
2508 | case UNDO_INS:
|
---|
2509 | case UNDO_INS_CHAIN:
|
---|
2510 | // delete what was inserted
|
---|
2511 | u_start = undo_entry->start + text;
|
---|
2512 | u_end = u_start - 1 + undo_entry->length;
|
---|
2513 | text_hole_delete(u_start, u_end, NO_UNDO);
|
---|
2514 | status_line("Undo [%d] %s %d chars at position %d",
|
---|
2515 | modified_count, "deleted",
|
---|
2516 | undo_entry->length, undo_entry->start
|
---|
2517 | );
|
---|
2518 | break;
|
---|
2519 | }
|
---|
2520 | repeat = 0;
|
---|
2521 | switch (undo_entry->u_type) {
|
---|
2522 | // If this is the end of a chain, lower modification count and refresh display
|
---|
2523 | case UNDO_DEL:
|
---|
2524 | case UNDO_INS:
|
---|
2525 | dot = (text + undo_entry->start);
|
---|
2526 | refresh(FALSE);
|
---|
2527 | break;
|
---|
2528 | case UNDO_DEL_CHAIN:
|
---|
2529 | case UNDO_INS_CHAIN:
|
---|
2530 | repeat = 1;
|
---|
2531 | break;
|
---|
2532 | }
|
---|
2533 | // Deallocate the undo object we just processed
|
---|
2534 | undo_stack_tail = undo_entry->prev;
|
---|
2535 | free(undo_entry);
|
---|
2536 | modified_count--;
|
---|
2537 | // For chained operations, continue popping all the way down the chain.
|
---|
2538 | if (repeat) {
|
---|
2539 | undo_pop(); // Follow the undo chain if one exists
|
---|
2540 | }
|
---|
2541 | }
|
---|
2542 |
|
---|
2543 | #if ENABLE_FEATURE_VI_UNDO_QUEUE
|
---|
2544 | static void undo_queue_commit(void) // Flush any queued objects to the undo stack
|
---|
2545 | {
|
---|
2546 | // Pushes the queue object onto the undo stack
|
---|
2547 | if (undo_q > 0) {
|
---|
2548 | // Deleted character undo events grow from the end
|
---|
2549 | undo_push(undo_queue + CONFIG_FEATURE_VI_UNDO_QUEUE_MAX - undo_q,
|
---|
2550 | undo_q,
|
---|
2551 | (undo_queue_state | UNDO_USE_SPOS)
|
---|
2552 | );
|
---|
2553 | undo_queue_state = UNDO_EMPTY;
|
---|
2554 | undo_q = 0;
|
---|
2555 | }
|
---|
2556 | }
|
---|
2557 | #endif
|
---|
2558 |
|
---|
2559 | #endif /* ENABLE_FEATURE_VI_UNDO */
|
---|
2560 |
|
---|
2561 | // open a hole in text[]
|
---|
2562 | // might reallocate text[]! use p += text_hole_make(p, ...),
|
---|
2563 | // and be careful to not use pointers into potentially freed text[]!
|
---|
2564 | static uintptr_t text_hole_make(char *p, int size) // at "p", make a 'size' byte hole
|
---|
2565 | {
|
---|
2566 | uintptr_t bias = 0;
|
---|
2567 |
|
---|
2568 | if (size <= 0)
|
---|
2569 | return bias;
|
---|
2570 | end += size; // adjust the new END
|
---|
2571 | if (end >= (text + text_size)) {
|
---|
2572 | char *new_text;
|
---|
2573 | text_size += end - (text + text_size) + 10240;
|
---|
2574 | new_text = xrealloc(text, text_size);
|
---|
2575 | bias = (new_text - text);
|
---|
2576 | screenbegin += bias;
|
---|
2577 | dot += bias;
|
---|
2578 | end += bias;
|
---|
2579 | p += bias;
|
---|
2580 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
2581 | {
|
---|
2582 | int i;
|
---|
2583 | for (i = 0; i < ARRAY_SIZE(mark); i++)
|
---|
2584 | if (mark[i])
|
---|
2585 | mark[i] += bias;
|
---|
2586 | }
|
---|
2587 | #endif
|
---|
2588 | text = new_text;
|
---|
2589 | }
|
---|
2590 | memmove(p + size, p, end - size - p);
|
---|
2591 | memset(p, ' ', size); // clear new hole
|
---|
2592 | return bias;
|
---|
2593 | }
|
---|
2594 |
|
---|
2595 | // close a hole in text[]
|
---|
2596 | // "undo" value indicates if this operation should be undo-able
|
---|
2597 | static char *text_hole_delete(char *p, char *q, int undo) // delete "p" through "q", inclusive
|
---|
2598 | {
|
---|
2599 | char *src, *dest;
|
---|
2600 | int cnt, hole_size;
|
---|
2601 |
|
---|
2602 | // move forwards, from beginning
|
---|
2603 | // assume p <= q
|
---|
2604 | #ifndef ENABLE_BASIC_MULTI_CHAR_CODE
|
---|
2605 | src = q + 1;
|
---|
2606 | dest = p;
|
---|
2607 | if (q < p) { // they are backward- swap them
|
---|
2608 | src = p + 1;
|
---|
2609 | dest = q;
|
---|
2610 | }
|
---|
2611 | hole_size = q - p + 1;
|
---|
2612 | #else
|
---|
2613 | int code_size;
|
---|
2614 | unsigned short tmp_code;
|
---|
2615 | if (q < p) { // they are backward- swap them
|
---|
2616 | tmp_code = Utf8_to_Utf16(p, &code_size);
|
---|
2617 | src = p + code_size;
|
---|
2618 | dest = q;
|
---|
2619 | hole_size = p - q + code_size;
|
---|
2620 | }
|
---|
2621 | else {
|
---|
2622 | if (q == (dot - 1)) { // BS
|
---|
2623 | code_size = bs_char_count(text, (dot - text - 1));
|
---|
2624 | src = q + 1;
|
---|
2625 | dest = p - (code_size - 1);
|
---|
2626 | }
|
---|
2627 | else { // DEL
|
---|
2628 | tmp_code = Utf8_to_Utf16(q, &code_size);
|
---|
2629 | src = q + code_size;
|
---|
2630 | dest = p;
|
---|
2631 | }
|
---|
2632 | hole_size = q - p + code_size;
|
---|
2633 | }
|
---|
2634 | #endif
|
---|
2635 | cnt = end - src;
|
---|
2636 | #if ENABLE_FEATURE_VI_UNDO
|
---|
2637 | switch (undo) {
|
---|
2638 | case NO_UNDO:
|
---|
2639 | break;
|
---|
2640 | case ALLOW_UNDO:
|
---|
2641 | undo_push(p, hole_size, UNDO_DEL);
|
---|
2642 | break;
|
---|
2643 | case ALLOW_UNDO_CHAIN:
|
---|
2644 | undo_push(p, hole_size, UNDO_DEL_CHAIN);
|
---|
2645 | break;
|
---|
2646 | # if ENABLE_FEATURE_VI_UNDO_QUEUE
|
---|
2647 | case ALLOW_UNDO_QUEUED:
|
---|
2648 | undo_push(p, hole_size, UNDO_DEL_QUEUED);
|
---|
2649 | break;
|
---|
2650 | # endif
|
---|
2651 | }
|
---|
2652 | modified_count--;
|
---|
2653 | #endif
|
---|
2654 | if (src < text || src > end)
|
---|
2655 | goto thd0;
|
---|
2656 | if (dest < text || dest >= end)
|
---|
2657 | goto thd0;
|
---|
2658 | modified_count++;
|
---|
2659 | if (src >= end)
|
---|
2660 | goto thd_atend; // just delete the end of the buffer
|
---|
2661 | memmove(dest, src, cnt);
|
---|
2662 | thd_atend:
|
---|
2663 | end = end - hole_size; // adjust the new END
|
---|
2664 | if (dest >= end)
|
---|
2665 | dest = end - 1; // make sure dest in below end-1
|
---|
2666 | if (end <= text)
|
---|
2667 | dest = end = text; // keep pointers valid
|
---|
2668 | thd0:
|
---|
2669 | return dest;
|
---|
2670 | }
|
---|
2671 |
|
---|
2672 | // copy text into register, then delete text.
|
---|
2673 | // if dist <= 0, do not include, or go past, a NewLine
|
---|
2674 | //
|
---|
2675 | static char *yank_delete(char *start, char *stop, int dist, int yf, int undo)
|
---|
2676 | {
|
---|
2677 | char *p;
|
---|
2678 |
|
---|
2679 | // make sure start <= stop
|
---|
2680 | if (start > stop) {
|
---|
2681 | // they are backwards, reverse them
|
---|
2682 | p = start;
|
---|
2683 | start = stop;
|
---|
2684 | stop = p;
|
---|
2685 | }
|
---|
2686 | if (dist <= 0) {
|
---|
2687 | // we cannot cross NL boundaries
|
---|
2688 | p = start;
|
---|
2689 | if (*p == '\n')
|
---|
2690 | return p;
|
---|
2691 | // dont go past a NewLine
|
---|
2692 | for (; p + 1 <= stop; p++) {
|
---|
2693 | if (p[1] == '\n') {
|
---|
2694 | stop = p; // "stop" just before NewLine
|
---|
2695 | break;
|
---|
2696 | }
|
---|
2697 | }
|
---|
2698 | }
|
---|
2699 | p = start;
|
---|
2700 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
2701 | text_yank(start, stop, YDreg);
|
---|
2702 | #endif
|
---|
2703 | if (yf == YANKDEL) {
|
---|
2704 | p = text_hole_delete(start, stop, undo);
|
---|
2705 | } // delete lines
|
---|
2706 | return p;
|
---|
2707 | }
|
---|
2708 |
|
---|
2709 | static void show_help(void)
|
---|
2710 | {
|
---|
2711 | puts("These features are available:"
|
---|
2712 | #if ENABLE_FEATURE_VI_SEARCH
|
---|
2713 | "\n\tPattern searches with / and ?"
|
---|
2714 | #endif
|
---|
2715 | #if ENABLE_FEATURE_VI_DOT_CMD
|
---|
2716 | "\n\tLast command repeat with ."
|
---|
2717 | #endif
|
---|
2718 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
2719 | "\n\tLine marking with 'x"
|
---|
2720 | "\n\tNamed buffers with \"x"
|
---|
2721 | #endif
|
---|
2722 | #if ENABLE_FEATURE_VI_READONLY
|
---|
2723 | //not implemented: "\n\tReadonly if vi is called as \"view\""
|
---|
2724 | //redundant: usage text says this too: "\n\tReadonly with -R command line arg"
|
---|
2725 | #endif
|
---|
2726 | #if ENABLE_FEATURE_VI_SET
|
---|
2727 | "\n\tSome colon mode commands with :"
|
---|
2728 | #endif
|
---|
2729 | #if ENABLE_FEATURE_VI_SETOPTS
|
---|
2730 | "\n\tSettable options with \":set\""
|
---|
2731 | #endif
|
---|
2732 | #if ENABLE_FEATURE_VI_USE_SIGNALS
|
---|
2733 | "\n\tSignal catching- ^C"
|
---|
2734 | "\n\tJob suspend and resume with ^Z"
|
---|
2735 | #endif
|
---|
2736 | #if ENABLE_FEATURE_VI_WIN_RESIZE
|
---|
2737 | "\n\tAdapt to window re-sizes"
|
---|
2738 | #endif
|
---|
2739 | );
|
---|
2740 | }
|
---|
2741 |
|
---|
2742 | #if ENABLE_FEATURE_VI_DOT_CMD
|
---|
2743 | static void start_new_cmd_q(char c)
|
---|
2744 | {
|
---|
2745 | // get buffer for new cmd
|
---|
2746 | // if there is a current cmd count put it in the buffer first
|
---|
2747 | if (cmdcnt > 0) {
|
---|
2748 | lmc_len = sprintf(last_modifying_cmd, "%d%c", cmdcnt, c);
|
---|
2749 | } else { // just save char c onto queue
|
---|
2750 | last_modifying_cmd[0] = c;
|
---|
2751 | lmc_len = 1;
|
---|
2752 | }
|
---|
2753 | adding2q = 1;
|
---|
2754 | }
|
---|
2755 |
|
---|
2756 | static void end_cmd_q(void)
|
---|
2757 | {
|
---|
2758 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
2759 | YDreg = 26; // go back to default Yank/Delete reg
|
---|
2760 | #endif
|
---|
2761 | adding2q = 0;
|
---|
2762 | }
|
---|
2763 | #endif /* FEATURE_VI_DOT_CMD */
|
---|
2764 |
|
---|
2765 | #if ENABLE_FEATURE_VI_YANKMARK \
|
---|
2766 | || (ENABLE_FEATURE_VI_COLON && ENABLE_FEATURE_VI_SEARCH) \
|
---|
2767 | || ENABLE_FEATURE_VI_CRASHME
|
---|
2768 | // might reallocate text[]! use p += string_insert(p, ...),
|
---|
2769 | // and be careful to not use pointers into potentially freed text[]!
|
---|
2770 | static uintptr_t string_insert(char *p, const char *s, int undo) // insert the string at 'p'
|
---|
2771 | {
|
---|
2772 | uintptr_t bias;
|
---|
2773 | int i;
|
---|
2774 |
|
---|
2775 | i = strlen(s);
|
---|
2776 | #if ENABLE_FEATURE_VI_UNDO
|
---|
2777 | switch (undo) {
|
---|
2778 | case ALLOW_UNDO:
|
---|
2779 | undo_push(p, i, UNDO_INS);
|
---|
2780 | break;
|
---|
2781 | case ALLOW_UNDO_CHAIN:
|
---|
2782 | undo_push(p, i, UNDO_INS_CHAIN);
|
---|
2783 | break;
|
---|
2784 | }
|
---|
2785 | #endif
|
---|
2786 | bias = text_hole_make(p, i);
|
---|
2787 | p += bias;
|
---|
2788 | memcpy(p, s, i);
|
---|
2789 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
2790 | {
|
---|
2791 | int cnt;
|
---|
2792 | for (cnt = 0; *s != '\0'; s++) {
|
---|
2793 | if (*s == '\n')
|
---|
2794 | cnt++;
|
---|
2795 | }
|
---|
2796 | status_line("Put %d lines (%d chars) from [%c]", cnt, i, what_reg());
|
---|
2797 | }
|
---|
2798 | #endif
|
---|
2799 | return bias;
|
---|
2800 | }
|
---|
2801 | #endif
|
---|
2802 |
|
---|
2803 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
2804 | static char *text_yank(char *p, char *q, int dest) // copy text into a register
|
---|
2805 | {
|
---|
2806 | int cnt = q - p;
|
---|
2807 | if (cnt < 0) { // they are backwards- reverse them
|
---|
2808 | p = q;
|
---|
2809 | cnt = -cnt;
|
---|
2810 | }
|
---|
2811 | free(reg[dest]); // if already a yank register, free it
|
---|
2812 | reg[dest] = xstrndup(p, cnt + 1);
|
---|
2813 | return p;
|
---|
2814 | }
|
---|
2815 |
|
---|
2816 | static char what_reg(void)
|
---|
2817 | {
|
---|
2818 | char c;
|
---|
2819 |
|
---|
2820 | c = 'D'; // default to D-reg
|
---|
2821 | if (0 <= YDreg && YDreg <= 25)
|
---|
2822 | c = 'a' + (char) YDreg;
|
---|
2823 | if (YDreg == 26)
|
---|
2824 | c = 'D';
|
---|
2825 | if (YDreg == 27)
|
---|
2826 | c = 'U';
|
---|
2827 | return c;
|
---|
2828 | }
|
---|
2829 |
|
---|
2830 | static void check_context(char cmd)
|
---|
2831 | {
|
---|
2832 | // A context is defined to be "modifying text"
|
---|
2833 | // Any modifying command establishes a new context.
|
---|
2834 |
|
---|
2835 | if (dot < context_start || dot > context_end) {
|
---|
2836 | if (strchr(modifying_cmds, cmd) != NULL) {
|
---|
2837 | // we are trying to modify text[]- make this the current context
|
---|
2838 | mark[27] = mark[26]; // move cur to prev
|
---|
2839 | mark[26] = dot; // move local to cur
|
---|
2840 | context_start = prev_line(prev_line(dot));
|
---|
2841 | context_end = next_line(next_line(dot));
|
---|
2842 | //loiter= start_loiter= now;
|
---|
2843 | }
|
---|
2844 | }
|
---|
2845 | }
|
---|
2846 |
|
---|
2847 | static char *swap_context(char *p) // goto new context for '' command make this the current context
|
---|
2848 | {
|
---|
2849 | char *tmp;
|
---|
2850 |
|
---|
2851 | // the current context is in mark[26]
|
---|
2852 | // the previous context is in mark[27]
|
---|
2853 | // only swap context if other context is valid
|
---|
2854 | if (text <= mark[27] && mark[27] <= end - 1) {
|
---|
2855 | tmp = mark[27];
|
---|
2856 | mark[27] = p;
|
---|
2857 | mark[26] = p = tmp;
|
---|
2858 | context_start = prev_line(prev_line(prev_line(p)));
|
---|
2859 | context_end = next_line(next_line(next_line(p)));
|
---|
2860 | }
|
---|
2861 | return p;
|
---|
2862 | }
|
---|
2863 | #endif /* FEATURE_VI_YANKMARK */
|
---|
2864 |
|
---|
2865 | //----- Set terminal attributes --------------------------------
|
---|
2866 | static void rawmode(void)
|
---|
2867 | {
|
---|
2868 | tcgetattr(0, &term_orig);
|
---|
2869 | term_vi = term_orig;
|
---|
2870 | term_vi.c_lflag &= (~ICANON & ~ECHO); // leave ISIG on - allow intr's
|
---|
2871 | term_vi.c_iflag &= (~IXON & ~ICRNL);
|
---|
2872 | term_vi.c_oflag &= (~ONLCR);
|
---|
2873 | term_vi.c_cc[VMIN] = 1;
|
---|
2874 | term_vi.c_cc[VTIME] = 0;
|
---|
2875 | erase_char = term_vi.c_cc[VERASE];
|
---|
2876 | tcsetattr_stdin_TCSANOW(&term_vi);
|
---|
2877 | }
|
---|
2878 |
|
---|
2879 | static void cookmode(void)
|
---|
2880 | {
|
---|
2881 | fflush_all();
|
---|
2882 | tcsetattr_stdin_TCSANOW(&term_orig);
|
---|
2883 | }
|
---|
2884 |
|
---|
2885 | #if ENABLE_FEATURE_VI_USE_SIGNALS
|
---|
2886 | //----- Come here when we get a window resize signal ---------
|
---|
2887 | static void winch_sig(int sig UNUSED_PARAM)
|
---|
2888 | {
|
---|
2889 | int save_errno = errno;
|
---|
2890 | // FIXME: do it in main loop!!!
|
---|
2891 | signal(SIGWINCH, winch_sig);
|
---|
2892 | query_screen_dimensions();
|
---|
2893 | new_screen(rows, columns); // get memory for virtual screen
|
---|
2894 | redraw(TRUE); // re-draw the screen
|
---|
2895 | errno = save_errno;
|
---|
2896 | }
|
---|
2897 |
|
---|
2898 | //----- Come here when we get a continue signal -------------------
|
---|
2899 | static void cont_sig(int sig UNUSED_PARAM)
|
---|
2900 | {
|
---|
2901 | int save_errno = errno;
|
---|
2902 | rawmode(); // terminal to "raw"
|
---|
2903 | last_status_cksum = 0; // force status update
|
---|
2904 | redraw(TRUE); // re-draw the screen
|
---|
2905 |
|
---|
2906 | signal(SIGTSTP, suspend_sig);
|
---|
2907 | signal(SIGCONT, SIG_DFL);
|
---|
2908 | //kill(my_pid, SIGCONT); // huh? why? we are already "continued"...
|
---|
2909 | errno = save_errno;
|
---|
2910 | }
|
---|
2911 |
|
---|
2912 | //----- Come here when we get a Suspend signal -------------------
|
---|
2913 | static void suspend_sig(int sig UNUSED_PARAM)
|
---|
2914 | {
|
---|
2915 | int save_errno = errno;
|
---|
2916 | go_bottom_and_clear_to_eol();
|
---|
2917 | cookmode(); // terminal to "cooked"
|
---|
2918 |
|
---|
2919 | signal(SIGCONT, cont_sig);
|
---|
2920 | signal(SIGTSTP, SIG_DFL);
|
---|
2921 | kill(my_pid, SIGTSTP);
|
---|
2922 | errno = save_errno;
|
---|
2923 | }
|
---|
2924 |
|
---|
2925 | //----- Come here when we get a signal ---------------------------
|
---|
2926 | static void catch_sig(int sig)
|
---|
2927 | {
|
---|
2928 | signal(SIGINT, catch_sig);
|
---|
2929 | siglongjmp(restart, sig);
|
---|
2930 | }
|
---|
2931 | #endif /* FEATURE_VI_USE_SIGNALS */
|
---|
2932 |
|
---|
2933 | static int mysleep(int hund) // sleep for 'hund' 1/100 seconds or stdin ready
|
---|
2934 | {
|
---|
2935 | struct pollfd pfd[1];
|
---|
2936 |
|
---|
2937 | if (hund != 0)
|
---|
2938 | fflush_all();
|
---|
2939 |
|
---|
2940 | pfd[0].fd = STDIN_FILENO;
|
---|
2941 | pfd[0].events = POLLIN;
|
---|
2942 | return safe_poll(pfd, 1, hund*10) > 0;
|
---|
2943 | }
|
---|
2944 |
|
---|
2945 | //----- IO Routines --------------------------------------------
|
---|
2946 | static int readit(void) // read (maybe cursor) key from stdin
|
---|
2947 | {
|
---|
2948 | int c;
|
---|
2949 |
|
---|
2950 | fflush_all();
|
---|
2951 | c = read_key(STDIN_FILENO, readbuffer, /*timeout off:*/ -2);
|
---|
2952 | if (c == -1) { // EOF/error
|
---|
2953 | go_bottom_and_clear_to_eol();
|
---|
2954 | cookmode(); // terminal to "cooked"
|
---|
2955 | bb_error_msg_and_die("can't read user input");
|
---|
2956 | }
|
---|
2957 | return c;
|
---|
2958 | }
|
---|
2959 |
|
---|
2960 | //----- IO Routines --------------------------------------------
|
---|
2961 | static int get_one_char(void)
|
---|
2962 | {
|
---|
2963 | int c;
|
---|
2964 |
|
---|
2965 | #if ENABLE_FEATURE_VI_DOT_CMD
|
---|
2966 | if (!adding2q) {
|
---|
2967 | // we are not adding to the q.
|
---|
2968 | // but, we may be reading from a q
|
---|
2969 | if (ioq == 0) {
|
---|
2970 | // there is no current q, read from STDIN
|
---|
2971 | c = readit(); // get the users input
|
---|
2972 | } else {
|
---|
2973 | // there is a queue to get chars from first
|
---|
2974 | // careful with correct sign expansion!
|
---|
2975 | c = (unsigned char)*ioq++;
|
---|
2976 | if (c == '\0') {
|
---|
2977 | // the end of the q, read from STDIN
|
---|
2978 | free(ioq_start);
|
---|
2979 | ioq_start = ioq = 0;
|
---|
2980 | c = readit(); // get the users input
|
---|
2981 | }
|
---|
2982 | }
|
---|
2983 | } else {
|
---|
2984 | // adding STDIN chars to q
|
---|
2985 | c = readit(); // get the users input
|
---|
2986 | if (lmc_len >= MAX_INPUT_LEN - 1) {
|
---|
2987 | status_line_bold("last_modifying_cmd overrun");
|
---|
2988 | } else {
|
---|
2989 | // add new char to q
|
---|
2990 | last_modifying_cmd[lmc_len++] = c;
|
---|
2991 | }
|
---|
2992 | }
|
---|
2993 | #else
|
---|
2994 | c = readit(); // get the users input
|
---|
2995 | #endif /* FEATURE_VI_DOT_CMD */
|
---|
2996 | return c;
|
---|
2997 | }
|
---|
2998 |
|
---|
2999 | // Get input line (uses "status line" area)
|
---|
3000 | static char *get_input_line(const char *prompt)
|
---|
3001 | {
|
---|
3002 | // char [MAX_INPUT_LEN]
|
---|
3003 | #define buf get_input_line__buf
|
---|
3004 |
|
---|
3005 | int c;
|
---|
3006 | int i;
|
---|
3007 |
|
---|
3008 | strcpy(buf, prompt);
|
---|
3009 | last_status_cksum = 0; // force status update
|
---|
3010 | go_bottom_and_clear_to_eol();
|
---|
3011 | write1(prompt); // write out the :, /, or ? prompt
|
---|
3012 |
|
---|
3013 | i = strlen(buf);
|
---|
3014 | while (i < MAX_INPUT_LEN) {
|
---|
3015 | c = get_one_char();
|
---|
3016 | if (c == '\n' || c == '\r' || c == 27)
|
---|
3017 | break; // this is end of input
|
---|
3018 | if (c == erase_char || c == 8 || c == 127) {
|
---|
3019 | // user wants to erase prev char
|
---|
3020 | buf[--i] = '\0';
|
---|
3021 | write1("\b \b"); // erase char on screen
|
---|
3022 | if (i <= 0) // user backs up before b-o-l, exit
|
---|
3023 | break;
|
---|
3024 | } else if (c > 0 && c < 256) { // exclude Unicode
|
---|
3025 | // (TODO: need to handle Unicode)
|
---|
3026 | buf[i] = c;
|
---|
3027 | buf[++i] = '\0';
|
---|
3028 | bb_putchar(c);
|
---|
3029 | }
|
---|
3030 | }
|
---|
3031 | refresh(FALSE);
|
---|
3032 | return buf;
|
---|
3033 | #undef buf
|
---|
3034 | }
|
---|
3035 |
|
---|
3036 | // might reallocate text[]!
|
---|
3037 | static int file_insert(const char *fn, char *p, int initial)
|
---|
3038 | {
|
---|
3039 | int cnt = -1;
|
---|
3040 | int fd, size;
|
---|
3041 | struct stat statbuf;
|
---|
3042 |
|
---|
3043 | if (p < text)
|
---|
3044 | p = text;
|
---|
3045 | if (p > end)
|
---|
3046 | p = end;
|
---|
3047 |
|
---|
3048 | fd = open(fn, O_RDONLY);
|
---|
3049 | if (fd < 0) {
|
---|
3050 | if (!initial)
|
---|
3051 | status_line_bold_errno(fn);
|
---|
3052 | return cnt;
|
---|
3053 | }
|
---|
3054 |
|
---|
3055 | /* Validate file */
|
---|
3056 | // if (fstat(fd, &statbuf) < 0) {
|
---|
3057 | if (stat(fn, &statbuf) < 0) {
|
---|
3058 | status_line_bold_errno(fn);
|
---|
3059 | goto fi;
|
---|
3060 | }
|
---|
3061 | if (!S_ISREG(statbuf.st_mode)) {
|
---|
3062 | status_line_bold("'%s' is not a regular file", fn);
|
---|
3063 | goto fi;
|
---|
3064 | }
|
---|
3065 | size = (statbuf.st_size < INT_MAX ? (int)statbuf.st_size : INT_MAX);
|
---|
3066 | p += text_hole_make(p, size);
|
---|
3067 | cnt = full_read(fd, p, size);
|
---|
3068 | if (cnt < 0) {
|
---|
3069 | status_line_bold_errno(fn);
|
---|
3070 | p = text_hole_delete(p, p + size - 1, NO_UNDO); // un-do buffer insert
|
---|
3071 | } else if (cnt < size) {
|
---|
3072 | // There was a partial read, shrink unused space
|
---|
3073 | p = text_hole_delete(p + cnt, p + size - 1, NO_UNDO);
|
---|
3074 | status_line_bold("can't read '%s'", fn);
|
---|
3075 | }
|
---|
3076 | fi:
|
---|
3077 | close(fd);
|
---|
3078 |
|
---|
3079 | #if ENABLE_FEATURE_VI_READONLY
|
---|
3080 | if (initial
|
---|
3081 | && ((access(fn, W_OK) < 0) ||
|
---|
3082 | /* root will always have access()
|
---|
3083 | * so we check fileperms too */
|
---|
3084 | !(statbuf.st_mode & (S_IWUSR | S_IWGRP | S_IWOTH))
|
---|
3085 | )
|
---|
3086 | ) {
|
---|
3087 | SET_READONLY_FILE(readonly_mode);
|
---|
3088 | }
|
---|
3089 | #endif
|
---|
3090 | return cnt;
|
---|
3091 | }
|
---|
3092 |
|
---|
3093 | static int file_write(char *fn, char *first, char *last)
|
---|
3094 | {
|
---|
3095 | int fd, cnt, charcnt;
|
---|
3096 |
|
---|
3097 | if (fn == 0) {
|
---|
3098 | status_line_bold("No current filename");
|
---|
3099 | return -2;
|
---|
3100 | }
|
---|
3101 | /* By popular request we do not open file with O_TRUNC,
|
---|
3102 | * but instead ftruncate() it _after_ successful write.
|
---|
3103 | * Might reduce amount of data lost on power fail etc.
|
---|
3104 | */
|
---|
3105 | fd = open(fn, (O_WRONLY | O_CREAT), 0666);
|
---|
3106 | if (fd < 0)
|
---|
3107 | return -1;
|
---|
3108 | cnt = last - first + 1;
|
---|
3109 | charcnt = full_write(fd, first, cnt);
|
---|
3110 | ftruncate(fd, charcnt);
|
---|
3111 | if (charcnt == cnt) {
|
---|
3112 | // good write
|
---|
3113 | //modified_count = FALSE;
|
---|
3114 | } else {
|
---|
3115 | charcnt = 0;
|
---|
3116 | }
|
---|
3117 | close(fd);
|
---|
3118 | return charcnt;
|
---|
3119 | }
|
---|
3120 |
|
---|
3121 | //----- Terminal Drawing ---------------------------------------
|
---|
3122 | // The terminal is made up of 'rows' line of 'columns' columns.
|
---|
3123 | // classically this would be 24 x 80.
|
---|
3124 | // screen coordinates
|
---|
3125 | // 0,0 ... 0,79
|
---|
3126 | // 1,0 ... 1,79
|
---|
3127 | // . ... .
|
---|
3128 | // . ... .
|
---|
3129 | // 22,0 ... 22,79
|
---|
3130 | // 23,0 ... 23,79 <- status line
|
---|
3131 |
|
---|
3132 | //----- Move the cursor to row x col (count from 0, not 1) -------
|
---|
3133 | static void place_cursor(int row, int col)
|
---|
3134 | {
|
---|
3135 | char cm1[sizeof(ESC_SET_CURSOR_POS) + sizeof(int)*3 * 2];
|
---|
3136 |
|
---|
3137 | if (row < 0) row = 0;
|
---|
3138 | if (row >= rows) row = rows - 1;
|
---|
3139 | if (col < 0) col = 0;
|
---|
3140 | if (col >= columns) col = columns - 1;
|
---|
3141 |
|
---|
3142 | sprintf(cm1, ESC_SET_CURSOR_POS, row + 1, col + 1);
|
---|
3143 | write1(cm1);
|
---|
3144 | }
|
---|
3145 |
|
---|
3146 | //----- Erase from cursor to end of line -----------------------
|
---|
3147 | static void clear_to_eol(void)
|
---|
3148 | {
|
---|
3149 | write1(ESC_CLEAR2EOL);
|
---|
3150 | }
|
---|
3151 |
|
---|
3152 | static void go_bottom_and_clear_to_eol(void)
|
---|
3153 | {
|
---|
3154 | place_cursor(rows - 1, 0);
|
---|
3155 | clear_to_eol();
|
---|
3156 | }
|
---|
3157 |
|
---|
3158 | //----- Erase from cursor to end of screen -----------------------
|
---|
3159 | static void clear_to_eos(void)
|
---|
3160 | {
|
---|
3161 | write1(ESC_CLEAR2EOS);
|
---|
3162 | }
|
---|
3163 |
|
---|
3164 | //----- Start standout mode ------------------------------------
|
---|
3165 | static void standout_start(void)
|
---|
3166 | {
|
---|
3167 | write1(ESC_BOLD_TEXT);
|
---|
3168 | }
|
---|
3169 |
|
---|
3170 | //----- End standout mode --------------------------------------
|
---|
3171 | static void standout_end(void)
|
---|
3172 | {
|
---|
3173 | write1(ESC_NORM_TEXT);
|
---|
3174 | }
|
---|
3175 |
|
---|
3176 | //----- Flash the screen --------------------------------------
|
---|
3177 | static void flash(int h)
|
---|
3178 | {
|
---|
3179 | standout_start();
|
---|
3180 | redraw(TRUE);
|
---|
3181 | mysleep(h);
|
---|
3182 | standout_end();
|
---|
3183 | redraw(TRUE);
|
---|
3184 | }
|
---|
3185 |
|
---|
3186 | static void indicate_error(void)
|
---|
3187 | {
|
---|
3188 | #if ENABLE_FEATURE_VI_CRASHME
|
---|
3189 | if (crashme > 0)
|
---|
3190 | return; // generate a random command
|
---|
3191 | #endif
|
---|
3192 | if (!err_method) {
|
---|
3193 | write1(ESC_BELL);
|
---|
3194 | } else {
|
---|
3195 | flash(10);
|
---|
3196 | }
|
---|
3197 | }
|
---|
3198 |
|
---|
3199 | //----- Screen[] Routines --------------------------------------
|
---|
3200 | //----- Erase the Screen[] memory ------------------------------
|
---|
3201 | static void screen_erase(void)
|
---|
3202 | {
|
---|
3203 | memset(screen, ' ', screensize); // clear new screen
|
---|
3204 | }
|
---|
3205 |
|
---|
3206 | static int bufsum(char *buf, int count)
|
---|
3207 | {
|
---|
3208 | int sum = 0;
|
---|
3209 | char *e = buf + count;
|
---|
3210 |
|
---|
3211 | while (buf < e)
|
---|
3212 | sum += (unsigned char) *buf++;
|
---|
3213 | return sum;
|
---|
3214 | }
|
---|
3215 |
|
---|
3216 | //----- Draw the status line at bottom of the screen -------------
|
---|
3217 | static void show_status_line(void)
|
---|
3218 | {
|
---|
3219 | int cnt = 0, cksum = 0;
|
---|
3220 |
|
---|
3221 | // either we already have an error or status message, or we
|
---|
3222 | // create one.
|
---|
3223 | if (!have_status_msg) {
|
---|
3224 | cnt = format_edit_status();
|
---|
3225 | cksum = bufsum(status_buffer, cnt);
|
---|
3226 | }
|
---|
3227 | if (have_status_msg || ((cnt > 0 && last_status_cksum != cksum))) {
|
---|
3228 | last_status_cksum = cksum; // remember if we have seen this line
|
---|
3229 | go_bottom_and_clear_to_eol();
|
---|
3230 | write1(status_buffer);
|
---|
3231 | if (have_status_msg) {
|
---|
3232 | if (((int)strlen(status_buffer) - (have_status_msg - 1)) >
|
---|
3233 | (columns - 1) ) {
|
---|
3234 | have_status_msg = 0;
|
---|
3235 | Hit_Return();
|
---|
3236 | }
|
---|
3237 | have_status_msg = 0;
|
---|
3238 | }
|
---|
3239 | place_cursor(crow, ccol); // put cursor back in correct place
|
---|
3240 | }
|
---|
3241 | fflush_all();
|
---|
3242 | }
|
---|
3243 |
|
---|
3244 | //----- format the status buffer, the bottom line of screen ------
|
---|
3245 | // format status buffer, with STANDOUT mode
|
---|
3246 | static void status_line_bold(const char *format, ...)
|
---|
3247 | {
|
---|
3248 | va_list args;
|
---|
3249 |
|
---|
3250 | va_start(args, format);
|
---|
3251 | strcpy(status_buffer, ESC_BOLD_TEXT);
|
---|
3252 | vsprintf(status_buffer + sizeof(ESC_BOLD_TEXT)-1, format, args);
|
---|
3253 | strcat(status_buffer, ESC_NORM_TEXT);
|
---|
3254 | va_end(args);
|
---|
3255 |
|
---|
3256 | have_status_msg = 1 + sizeof(ESC_BOLD_TEXT) + sizeof(ESC_NORM_TEXT) - 2;
|
---|
3257 | }
|
---|
3258 |
|
---|
3259 | static void status_line_bold_errno(const char *fn)
|
---|
3260 | {
|
---|
3261 | status_line_bold("'%s' %s", fn, strerror(errno));
|
---|
3262 | }
|
---|
3263 |
|
---|
3264 | // format status buffer
|
---|
3265 | static void status_line(const char *format, ...)
|
---|
3266 | {
|
---|
3267 | va_list args;
|
---|
3268 |
|
---|
3269 | va_start(args, format);
|
---|
3270 | vsprintf(status_buffer, format, args);
|
---|
3271 | va_end(args);
|
---|
3272 |
|
---|
3273 | have_status_msg = 1;
|
---|
3274 | }
|
---|
3275 |
|
---|
3276 | // copy s to buf, convert unprintable
|
---|
3277 | static void print_literal(char *buf, const char *s)
|
---|
3278 | {
|
---|
3279 | char *d;
|
---|
3280 | unsigned char c;
|
---|
3281 |
|
---|
3282 | buf[0] = '\0';
|
---|
3283 | if (!s[0])
|
---|
3284 | s = "(NULL)";
|
---|
3285 |
|
---|
3286 | d = buf;
|
---|
3287 | for (; *s; s++) {
|
---|
3288 | int c_is_no_print;
|
---|
3289 |
|
---|
3290 | c = *s;
|
---|
3291 | c_is_no_print = (c & 0x80) && !Isprint(c);
|
---|
3292 | if (c_is_no_print) {
|
---|
3293 | strcpy(d, ESC_NORM_TEXT);
|
---|
3294 | d += sizeof(ESC_NORM_TEXT)-1;
|
---|
3295 | c = '.';
|
---|
3296 | }
|
---|
3297 | if (c < ' ' || c == 0x7f) {
|
---|
3298 | *d++ = '^';
|
---|
3299 | c |= '@'; /* 0x40 */
|
---|
3300 | if (c == 0x7f)
|
---|
3301 | c = '?';
|
---|
3302 | }
|
---|
3303 | *d++ = c;
|
---|
3304 | *d = '\0';
|
---|
3305 | if (c_is_no_print) {
|
---|
3306 | strcpy(d, ESC_BOLD_TEXT);
|
---|
3307 | d += sizeof(ESC_BOLD_TEXT)-1;
|
---|
3308 | }
|
---|
3309 | if (*s == '\n') {
|
---|
3310 | *d++ = '$';
|
---|
3311 | *d = '\0';
|
---|
3312 | }
|
---|
3313 | if (d - buf > MAX_INPUT_LEN - 10) // paranoia
|
---|
3314 | break;
|
---|
3315 | }
|
---|
3316 | }
|
---|
3317 |
|
---|
3318 | static void not_implemented(const char *s)
|
---|
3319 | {
|
---|
3320 | char buf[MAX_INPUT_LEN];
|
---|
3321 |
|
---|
3322 | print_literal(buf, s);
|
---|
3323 | status_line_bold("\'%s\' is not implemented", buf);
|
---|
3324 | }
|
---|
3325 |
|
---|
3326 | // show file status on status line
|
---|
3327 | static int format_edit_status(void)
|
---|
3328 | {
|
---|
3329 | static const char cmd_mode_indicator[] ALIGN1 = "-IR-";
|
---|
3330 |
|
---|
3331 | #define tot format_edit_status__tot
|
---|
3332 |
|
---|
3333 | int cur, percent, ret, trunc_at;
|
---|
3334 |
|
---|
3335 | // modified_count is now a counter rather than a flag. this
|
---|
3336 | // helps reduce the amount of line counting we need to do.
|
---|
3337 | // (this will cause a mis-reporting of modified status
|
---|
3338 | // once every MAXINT editing operations.)
|
---|
3339 |
|
---|
3340 | // it would be nice to do a similar optimization here -- if
|
---|
3341 | // we haven't done a motion that could have changed which line
|
---|
3342 | // we're on, then we shouldn't have to do this count_lines()
|
---|
3343 | cur = count_lines(text, dot);
|
---|
3344 |
|
---|
3345 | // count_lines() is expensive.
|
---|
3346 | // Call it only if something was changed since last time
|
---|
3347 | // we were here:
|
---|
3348 | if (modified_count != last_modified_count) {
|
---|
3349 | tot = cur + count_lines(dot, end - 1) - 1;
|
---|
3350 | last_modified_count = modified_count;
|
---|
3351 | }
|
---|
3352 |
|
---|
3353 | // current line percent
|
---|
3354 | // ------------- ~~ ----------
|
---|
3355 | // total lines 100
|
---|
3356 | if (tot > 0) {
|
---|
3357 | percent = (100 * cur) / tot;
|
---|
3358 | } else {
|
---|
3359 | cur = tot = 0;
|
---|
3360 | percent = 100;
|
---|
3361 | }
|
---|
3362 |
|
---|
3363 | trunc_at = columns < STATUS_BUFFER_LEN-1 ?
|
---|
3364 | columns : STATUS_BUFFER_LEN-1;
|
---|
3365 |
|
---|
3366 | ret = snprintf(status_buffer, trunc_at+1,
|
---|
3367 | #if ENABLE_FEATURE_VI_READONLY
|
---|
3368 | "%c %s%s%s %d/%d %d%%",
|
---|
3369 | #else
|
---|
3370 | "%c %s%s %d/%d %d%%",
|
---|
3371 | #endif
|
---|
3372 | cmd_mode_indicator[cmd_mode & 3],
|
---|
3373 | (current_filename != NULL ? current_filename : "No file"),
|
---|
3374 | #if ENABLE_FEATURE_VI_READONLY
|
---|
3375 | (readonly_mode ? " [Readonly]" : ""),
|
---|
3376 | #endif
|
---|
3377 | (modified_count ? " [Modified]" : ""),
|
---|
3378 | cur, tot, percent);
|
---|
3379 |
|
---|
3380 | if (ret >= 0 && ret < trunc_at)
|
---|
3381 | return ret; /* it all fit */
|
---|
3382 |
|
---|
3383 | return trunc_at; /* had to truncate */
|
---|
3384 | #undef tot
|
---|
3385 | }
|
---|
3386 |
|
---|
3387 | //----- Force refresh of all Lines -----------------------------
|
---|
3388 | static void redraw(int full_screen)
|
---|
3389 | {
|
---|
3390 | place_cursor(0, 0);
|
---|
3391 | clear_to_eos();
|
---|
3392 | screen_erase(); // erase the internal screen buffer
|
---|
3393 | last_status_cksum = 0; // force status update
|
---|
3394 | refresh(full_screen); // this will redraw the entire display
|
---|
3395 | show_status_line();
|
---|
3396 | }
|
---|
3397 |
|
---|
3398 | #ifdef ENABLE_BASIC_MULTI_CHAR_CODE
|
---|
3399 | //----- get screen column number of string ---------------------
|
---|
3400 | int get_view_col_from_bytes(char *st, char bytes, int max_size)
|
---|
3401 | {
|
---|
3402 | char *buf_end = st + max_size;
|
---|
3403 | int tmp_bytes = 0, tmp_total_bytes = 0, view_col = 0;
|
---|
3404 | while (tmp_total_bytes < bytes) {
|
---|
3405 | Utf8_to_Utf16(st, &tmp_bytes);
|
---|
3406 | tmp_total_bytes += tmp_bytes;
|
---|
3407 | view_col += tmp_bytes > 1 ? 2 : 1;
|
---|
3408 | st += tmp_bytes;
|
---|
3409 | if (st >= buf_end)
|
---|
3410 | break;
|
---|
3411 | }
|
---|
3412 | return view_col;
|
---|
3413 | }
|
---|
3414 | //----- get string bytes of screen column ----------------------
|
---|
3415 | int get_bytes_from_view_col(char *st, int view_col, int max_size)
|
---|
3416 | {
|
---|
3417 | char *buf_end = st + max_size;
|
---|
3418 | int tmp_view_col = 0, bytes = 0, tmp_bytes;
|
---|
3419 | while (tmp_view_col < view_col) {
|
---|
3420 | Utf8_to_Utf16(st, &tmp_bytes);
|
---|
3421 | bytes += tmp_bytes;
|
---|
3422 | tmp_view_col += tmp_bytes > 1 ? 2 : 1;
|
---|
3423 | st += tmp_bytes;
|
---|
3424 | if (st >= buf_end)
|
---|
3425 | break;
|
---|
3426 | }
|
---|
3427 | return bytes;
|
---|
3428 | }
|
---|
3429 | #endif
|
---|
3430 |
|
---|
3431 | //----- Format a text[] line into a buffer ---------------------
|
---|
3432 | #ifndef ENABLE_BASIC_MULTI_CHAR_CODE
|
---|
3433 | static char* format_line(char *src /*, int li*/)
|
---|
3434 | #else
|
---|
3435 | static char* format_line(char *src , int *bytes, int *view_co)
|
---|
3436 | #endif
|
---|
3437 | {
|
---|
3438 | unsigned char c;
|
---|
3439 | int co;
|
---|
3440 | int ofs = offset;
|
---|
3441 | char *dest = scr_out_buf; // [MAX_SCR_COLS + MAX_TABSTOP * 2]
|
---|
3442 | #ifdef ENABLE_BASIC_MULTI_CHAR_CODE
|
---|
3443 | int tmp_bytes, tmp_columns_count, total_bytes = 0, view_columns = 0;
|
---|
3444 | memset(scr_out_buf, 0x00, sizeof(scr_out_buf));
|
---|
3445 | #endif
|
---|
3446 |
|
---|
3447 | c = '~'; // char in col 0 in non-existent lines is '~'
|
---|
3448 | co = 0;
|
---|
3449 | #ifndef ENABLE_BASIC_MULTI_CHAR_CODE
|
---|
3450 | while (co < columns + tabstop) {
|
---|
3451 | #else
|
---|
3452 | while (view_columns < columns + ofs/* + tabstop*/) {
|
---|
3453 | #endif
|
---|
3454 | // have we gone past the end?
|
---|
3455 | if (src < end) {
|
---|
3456 | c = *src++;
|
---|
3457 | if (c == '\n')
|
---|
3458 | break;
|
---|
3459 | if ((c & 0x80) && !Isprint(c)) {
|
---|
3460 | c = '.';
|
---|
3461 | }
|
---|
3462 | if (c < ' ' || c == 0x7f) {
|
---|
3463 | if (c == '\t') {
|
---|
3464 | c = ' ';
|
---|
3465 | // co % 8 != 7
|
---|
3466 | while ((co % tabstop) != (tabstop - 1)) {
|
---|
3467 | dest[co++] = c;
|
---|
3468 | #ifdef ENABLE_BASIC_MULTI_CHAR_CODE
|
---|
3469 | total_bytes++;
|
---|
3470 | view_columns++;
|
---|
3471 | #endif
|
---|
3472 | }
|
---|
3473 | } else {
|
---|
3474 | dest[co++] = '^';
|
---|
3475 | if (c == 0x7f)
|
---|
3476 | c = '?';
|
---|
3477 | else
|
---|
3478 | c += '@'; // Ctrl-X -> 'X'
|
---|
3479 | }
|
---|
3480 | }
|
---|
3481 | }
|
---|
3482 | dest[co++] = c;
|
---|
3483 | #ifdef ENABLE_BASIC_MULTI_CHAR_CODE
|
---|
3484 | total_bytes++;
|
---|
3485 | view_columns++;
|
---|
3486 | if (IsMultiByteChar(c, &tmp_bytes)) {
|
---|
3487 | if (view_columns + 1 > columns + ofs) {
|
---|
3488 | dest[--co] = ' ';
|
---|
3489 | }
|
---|
3490 | else {
|
---|
3491 | view_columns++;
|
---|
3492 | int i;
|
---|
3493 | for (i = 0; i < tmp_bytes - 1; i++) {
|
---|
3494 | dest[co++] = *src++;
|
---|
3495 | total_bytes++;
|
---|
3496 | }
|
---|
3497 | }
|
---|
3498 | }
|
---|
3499 | #endif
|
---|
3500 | #ifndef ENABLE_BASIC_MULTI_CHAR_CODE
|
---|
3501 | // discard scrolled-off-to-the-left portion,
|
---|
3502 | // in tabstop-sized pieces
|
---|
3503 | if (ofs >= tabstop && co >= tabstop) {
|
---|
3504 | memmove(dest, dest + tabstop, co);
|
---|
3505 | co -= tabstop;
|
---|
3506 | ofs -= tabstop;
|
---|
3507 | }
|
---|
3508 | #endif
|
---|
3509 | if (src >= end)
|
---|
3510 | break;
|
---|
3511 | }
|
---|
3512 | #ifndef ENABLE_BASIC_MULTI_CHAR_CODE
|
---|
3513 | // check "short line, gigantic offset" case
|
---|
3514 | if (co < ofs)
|
---|
3515 | ofs = co;
|
---|
3516 | // discard last scrolled off part
|
---|
3517 | co -= ofs;
|
---|
3518 | dest += ofs;
|
---|
3519 | // fill the rest with spaces
|
---|
3520 | if (co < columns)
|
---|
3521 | memset(&dest[co], ' ', columns - co);
|
---|
3522 | #else
|
---|
3523 | // check "short line, gigantic offset" case
|
---|
3524 | if (view_columns < ofs)
|
---|
3525 | ofs = view_columns;
|
---|
3526 | // discard last scrolled off part
|
---|
3527 | view_columns -= ofs;
|
---|
3528 | tmp_columns_count = 0;
|
---|
3529 | while (tmp_columns_count < ofs) {
|
---|
3530 | IsMultiByteChar(*dest, &tmp_bytes);
|
---|
3531 | dest += tmp_bytes;
|
---|
3532 | total_bytes -= tmp_bytes;
|
---|
3533 | tmp_columns_count += tmp_bytes > 1 ? 2 : 1;
|
---|
3534 | }
|
---|
3535 | // fill the rest with spaces
|
---|
3536 | if (view_columns < columns) {
|
---|
3537 | int ofs_bytes = get_bytes_from_view_col(scr_out_buf, ofs, co);
|
---|
3538 | memset(&dest[co - ofs_bytes], ' ', columns - view_columns);
|
---|
3539 | total_bytes = total_bytes + (columns - view_columns);
|
---|
3540 | }
|
---|
3541 | *bytes = total_bytes;
|
---|
3542 | *view_co = view_columns;
|
---|
3543 | #endif
|
---|
3544 | return dest;
|
---|
3545 | }
|
---|
3546 |
|
---|
3547 | //----- Refresh the changed screen lines -----------------------
|
---|
3548 | // Copy the source line from text[] into the buffer and note
|
---|
3549 | // if the current screenline is different from the new buffer.
|
---|
3550 | // If they differ then that line needs redrawing on the terminal.
|
---|
3551 | //
|
---|
3552 | static void refresh(int full_screen)
|
---|
3553 | {
|
---|
3554 | #define old_offset refresh__old_offset
|
---|
3555 |
|
---|
3556 | int li, changed;
|
---|
3557 | char *tp, *sp; // pointer into text[] and screen[]
|
---|
3558 | #ifdef ENABLE_BASIC_MULTI_CHAR_CODE
|
---|
3559 | int bytes, view_co;
|
---|
3560 | #endif
|
---|
3561 |
|
---|
3562 | if (ENABLE_FEATURE_VI_WIN_RESIZE IF_FEATURE_VI_ASK_TERMINAL(&& !G.get_rowcol_error) ) {
|
---|
3563 | unsigned c = columns, r = rows;
|
---|
3564 | query_screen_dimensions();
|
---|
3565 | full_screen |= (c - columns) | (r - rows);
|
---|
3566 | }
|
---|
3567 | sync_cursor(dot, &crow, &ccol); // where cursor will be (on "dot")
|
---|
3568 | tp = screenbegin; // index into text[] of top line
|
---|
3569 |
|
---|
3570 | // compare text[] to screen[] and mark screen[] lines that need updating
|
---|
3571 | for (li = 0; li < rows - 1; li++) {
|
---|
3572 | int cs, ce; // column start & end
|
---|
3573 | char *out_buf;
|
---|
3574 | // format current text line
|
---|
3575 | #ifndef ENABLE_BASIC_MULTI_CHAR_CODE
|
---|
3576 | out_buf = format_line(tp /*, li*/);
|
---|
3577 | #else
|
---|
3578 | out_buf = format_line(tp , &bytes, &view_co);
|
---|
3579 | #endif
|
---|
3580 |
|
---|
3581 | // skip to the end of the current text[] line
|
---|
3582 | if (tp < end) {
|
---|
3583 | char *t = memchr(tp, '\n', end - tp);
|
---|
3584 | if (!t) t = end - 1;
|
---|
3585 | tp = t + 1;
|
---|
3586 | }
|
---|
3587 |
|
---|
3588 | // see if there are any changes between virtual screen and out_buf
|
---|
3589 | changed = FALSE; // assume no change
|
---|
3590 | cs = 0;
|
---|
3591 | #ifndef ENABLE_BASIC_MULTI_CHAR_CODE
|
---|
3592 | ce = columns - 1;
|
---|
3593 | int cursor_column = 0;
|
---|
3594 | sp = &screen[li * columns]; // start of screen line
|
---|
3595 | #else
|
---|
3596 | ce = bytes - 1;
|
---|
3597 | int cursor_column = 0;
|
---|
3598 | sp = &screen[li * columns * MULTI_BYTE_MULTIPLE]; // start of screen line
|
---|
3599 | #endif
|
---|
3600 | if (full_screen) {
|
---|
3601 | // force re-draw of every single column from 0 - columns-1
|
---|
3602 | goto re0;
|
---|
3603 | }
|
---|
3604 | // compare newly formatted buffer with virtual screen
|
---|
3605 | // look forward for first difference between buf and screen
|
---|
3606 | #ifndef ENABLE_BASIC_MULTI_CHAR_CODE
|
---|
3607 | for (; cs <= ce; cs++) {
|
---|
3608 | if (out_buf[cs] != sp[cs]) {
|
---|
3609 | changed = TRUE; // mark for redraw
|
---|
3610 | break;
|
---|
3611 | }
|
---|
3612 | }
|
---|
3613 | #else
|
---|
3614 | while (cs <= ce) {
|
---|
3615 | int code_size;
|
---|
3616 | unsigned short tmp_code = Utf8_to_Utf16(&sp[cs], &code_size);
|
---|
3617 | if (memcmp(&out_buf[cs], &sp[cs], code_size)) {
|
---|
3618 | changed = TRUE; // mark for redraw
|
---|
3619 | break;
|
---|
3620 | }
|
---|
3621 | cs += code_size;
|
---|
3622 | cursor_column += (code_size > 1 ? 2 : 1);
|
---|
3623 | }
|
---|
3624 | #endif
|
---|
3625 | // look backward for last difference between out_buf and screen
|
---|
3626 | #ifndef ENABLE_BASIC_MULTI_CHAR_CODE
|
---|
3627 | for (; ce >= cs; ce--) {
|
---|
3628 | if (out_buf[ce] != sp[ce]) {
|
---|
3629 | changed = TRUE; // mark for redraw
|
---|
3630 | break;
|
---|
3631 | }
|
---|
3632 | }
|
---|
3633 | #else
|
---|
3634 | while (ce >= cs) {
|
---|
3635 | int code_size = bs_char_count(out_buf, ce);
|
---|
3636 | if (memcmp(&out_buf[ce], &sp[ce], code_size)) {
|
---|
3637 | changed = TRUE; // mark for redraw
|
---|
3638 | break;
|
---|
3639 | }
|
---|
3640 | ce -= code_size;
|
---|
3641 | }
|
---|
3642 | if (view_co < columns - 1)
|
---|
3643 | ce = bytes;
|
---|
3644 | #endif
|
---|
3645 | // now, cs is index of first diff, and ce is index of last diff
|
---|
3646 |
|
---|
3647 | // if horz offset has changed, force a redraw
|
---|
3648 | if (offset != old_offset) {
|
---|
3649 | re0:
|
---|
3650 | changed = TRUE;
|
---|
3651 | }
|
---|
3652 |
|
---|
3653 | // make a sanity check of columns indexes
|
---|
3654 | #ifndef ENABLE_BASIC_MULTI_CHAR_CODE
|
---|
3655 | if (cs < 0) { cs = 0; cursor_column = 0; }
|
---|
3656 | if (ce > columns - 1) ce = columns - 1;
|
---|
3657 | if (cs > ce) { cs = 0; ce = columns - 1; cursor_column = 0; }
|
---|
3658 | #else
|
---|
3659 | if (cs < 0) { cs = 0; cursor_column = 0; }
|
---|
3660 | if (get_view_col_from_bytes(out_buf, ce, (columns * MULTI_BYTE_MULTIPLE)) > columns - 1)
|
---|
3661 | ce = get_bytes_from_view_col(out_buf, columns, (columns * MULTI_BYTE_MULTIPLE)) - 1;
|
---|
3662 | if (cs > ce) {
|
---|
3663 | cs = 0;
|
---|
3664 | ce = get_bytes_from_view_col(out_buf, columns, (columns * MULTI_BYTE_MULTIPLE)) - 1;
|
---|
3665 | cursor_column = 0;
|
---|
3666 | }
|
---|
3667 | #endif
|
---|
3668 | // is there a change between virtual screen and out_buf
|
---|
3669 | if (changed) {
|
---|
3670 | // copy changed part of buffer to virtual screen
|
---|
3671 | memcpy(sp+cs, out_buf+cs, ce-cs+1);
|
---|
3672 | #ifndef ENABLE_BASIC_MULTI_CHAR_CODE
|
---|
3673 | place_cursor(li, cs);
|
---|
3674 | #else
|
---|
3675 | place_cursor(li, cursor_column);
|
---|
3676 | #endif
|
---|
3677 | // write line out to terminal
|
---|
3678 | fwrite(&sp[cs], ce - cs + 1, 1, stdout);
|
---|
3679 | }
|
---|
3680 | }
|
---|
3681 |
|
---|
3682 | place_cursor(crow, ccol);
|
---|
3683 |
|
---|
3684 | old_offset = offset;
|
---|
3685 | #undef old_offset
|
---|
3686 | }
|
---|
3687 |
|
---|
3688 | //---------------------------------------------------------------------
|
---|
3689 | //----- the Ascii Chart -----------------------------------------------
|
---|
3690 | //
|
---|
3691 | // 00 nul 01 soh 02 stx 03 etx 04 eot 05 enq 06 ack 07 bel
|
---|
3692 | // 08 bs 09 ht 0a nl 0b vt 0c np 0d cr 0e so 0f si
|
---|
3693 | // 10 dle 11 dc1 12 dc2 13 dc3 14 dc4 15 nak 16 syn 17 etb
|
---|
3694 | // 18 can 19 em 1a sub 1b esc 1c fs 1d gs 1e rs 1f us
|
---|
3695 | // 20 sp 21 ! 22 " 23 # 24 $ 25 % 26 & 27 '
|
---|
3696 | // 28 ( 29 ) 2a * 2b + 2c , 2d - 2e . 2f /
|
---|
3697 | // 30 0 31 1 32 2 33 3 34 4 35 5 36 6 37 7
|
---|
3698 | // 38 8 39 9 3a : 3b ; 3c < 3d = 3e > 3f ?
|
---|
3699 | // 40 @ 41 A 42 B 43 C 44 D 45 E 46 F 47 G
|
---|
3700 | // 48 H 49 I 4a J 4b K 4c L 4d M 4e N 4f O
|
---|
3701 | // 50 P 51 Q 52 R 53 S 54 T 55 U 56 V 57 W
|
---|
3702 | // 58 X 59 Y 5a Z 5b [ 5c \ 5d ] 5e ^ 5f _
|
---|
3703 | // 60 ` 61 a 62 b 63 c 64 d 65 e 66 f 67 g
|
---|
3704 | // 68 h 69 i 6a j 6b k 6c l 6d m 6e n 6f o
|
---|
3705 | // 70 p 71 q 72 r 73 s 74 t 75 u 76 v 77 w
|
---|
3706 | // 78 x 79 y 7a z 7b { 7c | 7d } 7e ~ 7f del
|
---|
3707 | //---------------------------------------------------------------------
|
---|
3708 |
|
---|
3709 | //----- Execute a Vi Command -----------------------------------
|
---|
3710 | static void do_cmd(int c)
|
---|
3711 | {
|
---|
3712 | char *p, *q, *save_dot;
|
---|
3713 | char buf[12];
|
---|
3714 | int dir;
|
---|
3715 | int cnt, i, j;
|
---|
3716 | int c1;
|
---|
3717 |
|
---|
3718 | // c1 = c; // quiet the compiler
|
---|
3719 | // cnt = yf = 0; // quiet the compiler
|
---|
3720 | // p = q = save_dot = buf; // quiet the compiler
|
---|
3721 | memset(buf, '\0', sizeof(buf));
|
---|
3722 |
|
---|
3723 | show_status_line();
|
---|
3724 |
|
---|
3725 | /* if this is a cursor key, skip these checks */
|
---|
3726 | switch (c) {
|
---|
3727 | case KEYCODE_UP:
|
---|
3728 | case KEYCODE_DOWN:
|
---|
3729 | case KEYCODE_LEFT:
|
---|
3730 | case KEYCODE_RIGHT:
|
---|
3731 | case KEYCODE_HOME:
|
---|
3732 | case KEYCODE_END:
|
---|
3733 | case KEYCODE_PAGEUP:
|
---|
3734 | case KEYCODE_PAGEDOWN:
|
---|
3735 | case KEYCODE_DELETE:
|
---|
3736 | goto key_cmd_mode;
|
---|
3737 | }
|
---|
3738 |
|
---|
3739 | if (cmd_mode == 2) {
|
---|
3740 | // flip-flop Insert/Replace mode
|
---|
3741 | if (c == KEYCODE_INSERT)
|
---|
3742 | goto dc_i;
|
---|
3743 | // we are 'R'eplacing the current *dot with new char
|
---|
3744 | if (*dot == '\n') {
|
---|
3745 | // don't Replace past E-o-l
|
---|
3746 | cmd_mode = 1; // convert to insert
|
---|
3747 | undo_queue_commit();
|
---|
3748 | } else {
|
---|
3749 | if (1 <= c || Isprint(c)) {
|
---|
3750 | if (c != 27)
|
---|
3751 | dot = yank_delete(dot, dot, 0, YANKDEL, ALLOW_UNDO); // delete char
|
---|
3752 | dot = char_insert(dot, c, ALLOW_UNDO_CHAIN); // insert new char
|
---|
3753 | }
|
---|
3754 | goto dc1;
|
---|
3755 | }
|
---|
3756 | }
|
---|
3757 | if (cmd_mode == 1) {
|
---|
3758 | // hitting "Insert" twice means "R" replace mode
|
---|
3759 | if (c == KEYCODE_INSERT) goto dc5;
|
---|
3760 | // insert the char c at "dot"
|
---|
3761 | if (1 <= c || Isprint(c)) {
|
---|
3762 | dot = char_insert(dot, c, ALLOW_UNDO_QUEUED);
|
---|
3763 | }
|
---|
3764 | goto dc1;
|
---|
3765 | }
|
---|
3766 |
|
---|
3767 | key_cmd_mode:
|
---|
3768 | switch (c) {
|
---|
3769 | //case 0x01: // soh
|
---|
3770 | //case 0x09: // ht
|
---|
3771 | //case 0x0b: // vt
|
---|
3772 | //case 0x0e: // so
|
---|
3773 | //case 0x0f: // si
|
---|
3774 | //case 0x10: // dle
|
---|
3775 | //case 0x11: // dc1
|
---|
3776 | //case 0x13: // dc3
|
---|
3777 | #if ENABLE_FEATURE_VI_CRASHME
|
---|
3778 | case 0x14: // dc4 ctrl-T
|
---|
3779 | crashme = (crashme == 0) ? 1 : 0;
|
---|
3780 | break;
|
---|
3781 | #endif
|
---|
3782 | //case 0x16: // syn
|
---|
3783 | //case 0x17: // etb
|
---|
3784 | //case 0x18: // can
|
---|
3785 | //case 0x1c: // fs
|
---|
3786 | //case 0x1d: // gs
|
---|
3787 | //case 0x1e: // rs
|
---|
3788 | //case 0x1f: // us
|
---|
3789 | //case '!': // !-
|
---|
3790 | //case '#': // #-
|
---|
3791 | //case '&': // &-
|
---|
3792 | //case '(': // (-
|
---|
3793 | //case ')': // )-
|
---|
3794 | //case '*': // *-
|
---|
3795 | //case '=': // =-
|
---|
3796 | //case '@': // @-
|
---|
3797 | //case 'F': // F-
|
---|
3798 | //case 'K': // K-
|
---|
3799 | //case 'Q': // Q-
|
---|
3800 | //case 'S': // S-
|
---|
3801 | //case 'T': // T-
|
---|
3802 | //case 'V': // V-
|
---|
3803 | //case '[': // [-
|
---|
3804 | //case '\\': // \-
|
---|
3805 | //case ']': // ]-
|
---|
3806 | //case '_': // _-
|
---|
3807 | //case '`': // `-
|
---|
3808 | //case 'v': // v-
|
---|
3809 | default: // unrecognized command
|
---|
3810 | buf[0] = c;
|
---|
3811 | buf[1] = '\0';
|
---|
3812 | not_implemented(buf);
|
---|
3813 | end_cmd_q(); // stop adding to q
|
---|
3814 | case 0x00: // nul- ignore
|
---|
3815 | break;
|
---|
3816 | case 2: // ctrl-B scroll up full screen
|
---|
3817 | case KEYCODE_PAGEUP: // Cursor Key Page Up
|
---|
3818 | dot_scroll(rows - 2, -1);
|
---|
3819 | break;
|
---|
3820 | case 4: // ctrl-D scroll down half screen
|
---|
3821 | dot_scroll((rows - 2) / 2, 1);
|
---|
3822 | break;
|
---|
3823 | case 5: // ctrl-E scroll down one line
|
---|
3824 | dot_scroll(1, 1);
|
---|
3825 | break;
|
---|
3826 | case 6: // ctrl-F scroll down full screen
|
---|
3827 | case KEYCODE_PAGEDOWN: // Cursor Key Page Down
|
---|
3828 | dot_scroll(rows - 2, 1);
|
---|
3829 | break;
|
---|
3830 | case 7: // ctrl-G show current status
|
---|
3831 | last_status_cksum = 0; // force status update
|
---|
3832 | break;
|
---|
3833 | case 'h': // h- move left
|
---|
3834 | case KEYCODE_LEFT: // cursor key Left
|
---|
3835 | case 8: // ctrl-H- move left (This may be ERASE char)
|
---|
3836 | case 0x7f: // DEL- move left (This may be ERASE char)
|
---|
3837 | do {
|
---|
3838 | dot_left();
|
---|
3839 | } while (--cmdcnt > 0);
|
---|
3840 | break;
|
---|
3841 | case 10: // Newline ^J
|
---|
3842 | case 'j': // j- goto next line, same col
|
---|
3843 | case KEYCODE_DOWN: // cursor key Down
|
---|
3844 | do {
|
---|
3845 | dot_next(); // go to next B-o-l
|
---|
3846 | // try stay in same col
|
---|
3847 | dot = move_to_col(dot, ccol + offset);
|
---|
3848 | } while (--cmdcnt > 0);
|
---|
3849 | break;
|
---|
3850 | case 12: // ctrl-L force redraw whole screen
|
---|
3851 | case 18: // ctrl-R force redraw
|
---|
3852 | place_cursor(0, 0);
|
---|
3853 | clear_to_eos();
|
---|
3854 | //mysleep(10); // why???
|
---|
3855 | screen_erase(); // erase the internal screen buffer
|
---|
3856 | last_status_cksum = 0; // force status update
|
---|
3857 | refresh(TRUE); // this will redraw the entire display
|
---|
3858 | break;
|
---|
3859 | case 13: // Carriage Return ^M
|
---|
3860 | case '+': // +- goto next line
|
---|
3861 | do {
|
---|
3862 | dot_next();
|
---|
3863 | dot_skip_over_ws();
|
---|
3864 | } while (--cmdcnt > 0);
|
---|
3865 | break;
|
---|
3866 | case 21: // ctrl-U scroll up half screen
|
---|
3867 | dot_scroll((rows - 2) / 2, -1);
|
---|
3868 | break;
|
---|
3869 | case 25: // ctrl-Y scroll up one line
|
---|
3870 | dot_scroll(1, -1);
|
---|
3871 | break;
|
---|
3872 | case 27: // esc
|
---|
3873 | if (cmd_mode == 0)
|
---|
3874 | indicate_error();
|
---|
3875 | cmd_mode = 0; // stop insrting
|
---|
3876 | undo_queue_commit();
|
---|
3877 | end_cmd_q();
|
---|
3878 | last_status_cksum = 0; // force status update
|
---|
3879 | break;
|
---|
3880 | case ' ': // move right
|
---|
3881 | case 'l': // move right
|
---|
3882 | case KEYCODE_RIGHT: // Cursor Key Right
|
---|
3883 | do {
|
---|
3884 | dot_right();
|
---|
3885 | } while (--cmdcnt > 0);
|
---|
3886 | break;
|
---|
3887 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
3888 | case '"': // "- name a register to use for Delete/Yank
|
---|
3889 | c1 = (get_one_char() | 0x20) - 'a'; // | 0x20 is tolower()
|
---|
3890 | if ((unsigned)c1 <= 25) { // a-z?
|
---|
3891 | YDreg = c1;
|
---|
3892 | } else {
|
---|
3893 | indicate_error();
|
---|
3894 | }
|
---|
3895 | break;
|
---|
3896 | case '\'': // '- goto a specific mark
|
---|
3897 | c1 = (get_one_char() | 0x20);
|
---|
3898 | if ((unsigned)(c1 - 'a') <= 25) { // a-z?
|
---|
3899 | c1 = (c1 - 'a');
|
---|
3900 | // get the b-o-l
|
---|
3901 | q = mark[c1];
|
---|
3902 | if (text <= q && q < end) {
|
---|
3903 | dot = q;
|
---|
3904 | dot_begin(); // go to B-o-l
|
---|
3905 | dot_skip_over_ws();
|
---|
3906 | }
|
---|
3907 | } else if (c1 == '\'') { // goto previous context
|
---|
3908 | dot = swap_context(dot); // swap current and previous context
|
---|
3909 | dot_begin(); // go to B-o-l
|
---|
3910 | dot_skip_over_ws();
|
---|
3911 | } else {
|
---|
3912 | indicate_error();
|
---|
3913 | }
|
---|
3914 | break;
|
---|
3915 | case 'm': // m- Mark a line
|
---|
3916 | // this is really stupid. If there are any inserts or deletes
|
---|
3917 | // between text[0] and dot then this mark will not point to the
|
---|
3918 | // correct location! It could be off by many lines!
|
---|
3919 | // Well..., at least its quick and dirty.
|
---|
3920 | c1 = (get_one_char() | 0x20) - 'a';
|
---|
3921 | if ((unsigned)c1 <= 25) { // a-z?
|
---|
3922 | // remember the line
|
---|
3923 | mark[c1] = dot;
|
---|
3924 | } else {
|
---|
3925 | indicate_error();
|
---|
3926 | }
|
---|
3927 | break;
|
---|
3928 | case 'P': // P- Put register before
|
---|
3929 | case 'p': // p- put register after
|
---|
3930 | p = reg[YDreg];
|
---|
3931 | if (p == NULL) {
|
---|
3932 | status_line_bold("Nothing in register %c", what_reg());
|
---|
3933 | break;
|
---|
3934 | }
|
---|
3935 | // are we putting whole lines or strings
|
---|
3936 | if (strchr(p, '\n') != NULL) {
|
---|
3937 | if (c == 'P') {
|
---|
3938 | dot_begin(); // putting lines- Put above
|
---|
3939 | }
|
---|
3940 | if (c == 'p') {
|
---|
3941 | // are we putting after very last line?
|
---|
3942 | if (end_line(dot) == (end - 1)) {
|
---|
3943 | dot = end; // force dot to end of text[]
|
---|
3944 | } else {
|
---|
3945 | dot_next(); // next line, then put before
|
---|
3946 | }
|
---|
3947 | }
|
---|
3948 | } else {
|
---|
3949 | if (c == 'p')
|
---|
3950 | dot_right(); // move to right, can move to NL
|
---|
3951 | }
|
---|
3952 | string_insert(dot, p, ALLOW_UNDO); // insert the string
|
---|
3953 | end_cmd_q(); // stop adding to q
|
---|
3954 | break;
|
---|
3955 | case 'U': // U- Undo; replace current line with original version
|
---|
3956 | if (reg[Ureg] != NULL) {
|
---|
3957 | p = begin_line(dot);
|
---|
3958 | q = end_line(dot);
|
---|
3959 | p = text_hole_delete(p, q, ALLOW_UNDO); // delete cur line
|
---|
3960 | p += string_insert(p, reg[Ureg], ALLOW_UNDO_CHAIN); // insert orig line
|
---|
3961 | dot = p;
|
---|
3962 | dot_skip_over_ws();
|
---|
3963 | }
|
---|
3964 | break;
|
---|
3965 | #endif /* FEATURE_VI_YANKMARK */
|
---|
3966 | #if ENABLE_FEATURE_VI_UNDO
|
---|
3967 | case 'u': // u- undo last operation
|
---|
3968 | undo_pop();
|
---|
3969 | break;
|
---|
3970 | #endif
|
---|
3971 | case '$': // $- goto end of line
|
---|
3972 | case KEYCODE_END: // Cursor Key End
|
---|
3973 | for (;;) {
|
---|
3974 | dot = end_line(dot);
|
---|
3975 | if (--cmdcnt <= 0)
|
---|
3976 | break;
|
---|
3977 | dot_next();
|
---|
3978 | }
|
---|
3979 | break;
|
---|
3980 | case '%': // %- find matching char of pair () [] {}
|
---|
3981 | for (q = dot; q < end && *q != '\n'; q++) {
|
---|
3982 | if (strchr("()[]{}", *q) != NULL) {
|
---|
3983 | // we found half of a pair
|
---|
3984 | p = find_pair(q, *q);
|
---|
3985 | if (p == NULL) {
|
---|
3986 | indicate_error();
|
---|
3987 | } else {
|
---|
3988 | dot = p;
|
---|
3989 | }
|
---|
3990 | break;
|
---|
3991 | }
|
---|
3992 | }
|
---|
3993 | if (*q == '\n')
|
---|
3994 | indicate_error();
|
---|
3995 | break;
|
---|
3996 | case 'f': // f- forward to a user specified char
|
---|
3997 | last_forward_char = get_one_char(); // get the search char
|
---|
3998 | //
|
---|
3999 | // dont separate these two commands. 'f' depends on ';'
|
---|
4000 | //
|
---|
4001 | //**** fall through to ... ';'
|
---|
4002 | case ';': // ;- look at rest of line for last forward char
|
---|
4003 | do {
|
---|
4004 | if (last_forward_char == 0)
|
---|
4005 | break;
|
---|
4006 | q = dot + 1;
|
---|
4007 | while (q < end - 1 && *q != '\n' && *q != last_forward_char) {
|
---|
4008 | q++;
|
---|
4009 | }
|
---|
4010 | if (*q == last_forward_char)
|
---|
4011 | dot = q;
|
---|
4012 | } while (--cmdcnt > 0);
|
---|
4013 | break;
|
---|
4014 | case ',': // repeat latest 'f' in opposite direction
|
---|
4015 | if (last_forward_char == 0)
|
---|
4016 | break;
|
---|
4017 | do {
|
---|
4018 | q = dot - 1;
|
---|
4019 | while (q >= text && *q != '\n' && *q != last_forward_char) {
|
---|
4020 | q--;
|
---|
4021 | }
|
---|
4022 | if (q >= text && *q == last_forward_char)
|
---|
4023 | dot = q;
|
---|
4024 | } while (--cmdcnt > 0);
|
---|
4025 | break;
|
---|
4026 |
|
---|
4027 | case '-': // -- goto prev line
|
---|
4028 | do {
|
---|
4029 | dot_prev();
|
---|
4030 | dot_skip_over_ws();
|
---|
4031 | } while (--cmdcnt > 0);
|
---|
4032 | break;
|
---|
4033 | #if ENABLE_FEATURE_VI_DOT_CMD
|
---|
4034 | case '.': // .- repeat the last modifying command
|
---|
4035 | // Stuff the last_modifying_cmd back into stdin
|
---|
4036 | // and let it be re-executed.
|
---|
4037 | if (lmc_len > 0) {
|
---|
4038 | last_modifying_cmd[lmc_len] = 0;
|
---|
4039 | ioq = ioq_start = xstrdup(last_modifying_cmd);
|
---|
4040 | }
|
---|
4041 | break;
|
---|
4042 | #endif
|
---|
4043 | #if ENABLE_FEATURE_VI_SEARCH
|
---|
4044 | case '?': // /- search for a pattern
|
---|
4045 | case '/': // /- search for a pattern
|
---|
4046 | buf[0] = c;
|
---|
4047 | buf[1] = '\0';
|
---|
4048 | q = get_input_line(buf); // get input line- use "status line"
|
---|
4049 | if (q[0] && !q[1]) {
|
---|
4050 | if (last_search_pattern[0])
|
---|
4051 | last_search_pattern[0] = c;
|
---|
4052 | goto dc3; // if no pat re-use old pat
|
---|
4053 | }
|
---|
4054 | if (q[0]) { // strlen(q) > 1: new pat- save it and find
|
---|
4055 | // there is a new pat
|
---|
4056 | free(last_search_pattern);
|
---|
4057 | last_search_pattern = xstrdup(q);
|
---|
4058 | goto dc3; // now find the pattern
|
---|
4059 | }
|
---|
4060 | // user changed mind and erased the "/"- do nothing
|
---|
4061 | break;
|
---|
4062 | case 'N': // N- backward search for last pattern
|
---|
4063 | dir = BACK; // assume BACKWARD search
|
---|
4064 | p = dot - 1;
|
---|
4065 | if (last_search_pattern[0] == '?') {
|
---|
4066 | dir = FORWARD;
|
---|
4067 | p = dot + 1;
|
---|
4068 | }
|
---|
4069 | goto dc4; // now search for pattern
|
---|
4070 | break;
|
---|
4071 | case 'n': // n- repeat search for last pattern
|
---|
4072 | // search rest of text[] starting at next char
|
---|
4073 | // if search fails return orignal "p" not the "p+1" address
|
---|
4074 | do {
|
---|
4075 | const char *msg;
|
---|
4076 | dc3:
|
---|
4077 | dir = FORWARD; // assume FORWARD search
|
---|
4078 | p = dot + 1;
|
---|
4079 | if (last_search_pattern[0] == '?') {
|
---|
4080 | dir = BACK;
|
---|
4081 | p = dot - 1;
|
---|
4082 | }
|
---|
4083 | dc4:
|
---|
4084 | q = char_search(p, last_search_pattern + 1, dir, FULL);
|
---|
4085 | if (q != NULL) {
|
---|
4086 | dot = q; // good search, update "dot"
|
---|
4087 | msg = NULL;
|
---|
4088 | goto dc2;
|
---|
4089 | }
|
---|
4090 | // no pattern found between "dot" and "end"- continue at top
|
---|
4091 | p = text;
|
---|
4092 | if (dir == BACK) {
|
---|
4093 | p = end - 1;
|
---|
4094 | }
|
---|
4095 | q = char_search(p, last_search_pattern + 1, dir, FULL);
|
---|
4096 | if (q != NULL) { // found something
|
---|
4097 | dot = q; // found new pattern- goto it
|
---|
4098 | msg = "search hit BOTTOM, continuing at TOP";
|
---|
4099 | if (dir == BACK) {
|
---|
4100 | msg = "search hit TOP, continuing at BOTTOM";
|
---|
4101 | }
|
---|
4102 | } else {
|
---|
4103 | msg = "Pattern not found";
|
---|
4104 | }
|
---|
4105 | dc2:
|
---|
4106 | if (msg)
|
---|
4107 | status_line_bold("%s", msg);
|
---|
4108 | } while (--cmdcnt > 0);
|
---|
4109 | break;
|
---|
4110 | case '{': // {- move backward paragraph
|
---|
4111 | q = char_search(dot, "\n\n", BACK, FULL);
|
---|
4112 | if (q != NULL) { // found blank line
|
---|
4113 | dot = next_line(q); // move to next blank line
|
---|
4114 | }
|
---|
4115 | break;
|
---|
4116 | case '}': // }- move forward paragraph
|
---|
4117 | q = char_search(dot, "\n\n", FORWARD, FULL);
|
---|
4118 | if (q != NULL) { // found blank line
|
---|
4119 | dot = next_line(q); // move to next blank line
|
---|
4120 | }
|
---|
4121 | break;
|
---|
4122 | #endif /* FEATURE_VI_SEARCH */
|
---|
4123 | case '0': // 0- goto beginning of line
|
---|
4124 | case '1': // 1-
|
---|
4125 | case '2': // 2-
|
---|
4126 | case '3': // 3-
|
---|
4127 | case '4': // 4-
|
---|
4128 | case '5': // 5-
|
---|
4129 | case '6': // 6-
|
---|
4130 | case '7': // 7-
|
---|
4131 | case '8': // 8-
|
---|
4132 | case '9': // 9-
|
---|
4133 | if (c == '0' && cmdcnt < 1) {
|
---|
4134 | dot_begin(); // this was a standalone zero
|
---|
4135 | } else {
|
---|
4136 | cmdcnt = cmdcnt * 10 + (c - '0'); // this 0 is part of a number
|
---|
4137 | }
|
---|
4138 | break;
|
---|
4139 | case ':': // :- the colon mode commands
|
---|
4140 | p = get_input_line(":"); // get input line- use "status line"
|
---|
4141 | colon(p); // execute the command
|
---|
4142 | break;
|
---|
4143 | case '<': // <- Left shift something
|
---|
4144 | case '>': // >- Right shift something
|
---|
4145 | cnt = count_lines(text, dot); // remember what line we are on
|
---|
4146 | c1 = get_one_char(); // get the type of thing to delete
|
---|
4147 | find_range(&p, &q, c1);
|
---|
4148 | yank_delete(p, q, 1, YANKONLY, NO_UNDO); // save copy before change
|
---|
4149 | p = begin_line(p);
|
---|
4150 | q = end_line(q);
|
---|
4151 | i = count_lines(p, q); // # of lines we are shifting
|
---|
4152 | for ( ; i > 0; i--, p = next_line(p)) {
|
---|
4153 | if (c == '<') {
|
---|
4154 | // shift left- remove tab or 8 spaces
|
---|
4155 | if (*p == '\t') {
|
---|
4156 | // shrink buffer 1 char
|
---|
4157 | text_hole_delete(p, p, NO_UNDO);
|
---|
4158 | } else if (*p == ' ') {
|
---|
4159 | // we should be calculating columns, not just SPACE
|
---|
4160 | for (j = 0; *p == ' ' && j < tabstop; j++) {
|
---|
4161 | text_hole_delete(p, p, NO_UNDO);
|
---|
4162 | }
|
---|
4163 | }
|
---|
4164 | } else if (c == '>') {
|
---|
4165 | // shift right -- add tab or 8 spaces
|
---|
4166 | char_insert(p, '\t', ALLOW_UNDO);
|
---|
4167 | }
|
---|
4168 | }
|
---|
4169 | dot = find_line(cnt); // what line were we on
|
---|
4170 | dot_skip_over_ws();
|
---|
4171 | end_cmd_q(); // stop adding to q
|
---|
4172 | break;
|
---|
4173 | case 'A': // A- append at e-o-l
|
---|
4174 | dot_end(); // go to e-o-l
|
---|
4175 | //**** fall through to ... 'a'
|
---|
4176 | case 'a': // a- append after current char
|
---|
4177 | if (*dot != '\n')
|
---|
4178 | #ifndef ENABLE_BASIC_MULTI_CHAR_CODE
|
---|
4179 | dot++;
|
---|
4180 | #else
|
---|
4181 | {
|
---|
4182 | int code_size;
|
---|
4183 | unsigned short tmp_code = Utf8_to_Utf16(dot, &code_size);
|
---|
4184 | dot += code_size;
|
---|
4185 | }
|
---|
4186 | #endif
|
---|
4187 | goto dc_i;
|
---|
4188 | break;
|
---|
4189 | case 'B': // B- back a blank-delimited Word
|
---|
4190 | case 'E': // E- end of a blank-delimited word
|
---|
4191 | case 'W': // W- forward a blank-delimited word
|
---|
4192 | dir = FORWARD;
|
---|
4193 | if (c == 'B')
|
---|
4194 | dir = BACK;
|
---|
4195 | do {
|
---|
4196 | if (c == 'W' || isspace(dot[dir])) {
|
---|
4197 | dot = skip_thing(dot, 1, dir, S_TO_WS);
|
---|
4198 | dot = skip_thing(dot, 2, dir, S_OVER_WS);
|
---|
4199 | }
|
---|
4200 | if (c != 'W')
|
---|
4201 | dot = skip_thing(dot, 1, dir, S_BEFORE_WS);
|
---|
4202 | } while (--cmdcnt > 0);
|
---|
4203 | break;
|
---|
4204 | case 'C': // C- Change to e-o-l
|
---|
4205 | case 'D': // D- delete to e-o-l
|
---|
4206 | save_dot = dot;
|
---|
4207 | dot = dollar_line(dot); // move to before NL
|
---|
4208 | // copy text into a register and delete
|
---|
4209 | dot = yank_delete(save_dot, dot, 0, YANKDEL, ALLOW_UNDO); // delete to e-o-l
|
---|
4210 | if (c == 'C')
|
---|
4211 | goto dc_i; // start inserting
|
---|
4212 | #if ENABLE_FEATURE_VI_DOT_CMD
|
---|
4213 | if (c == 'D')
|
---|
4214 | end_cmd_q(); // stop adding to q
|
---|
4215 | #endif
|
---|
4216 | break;
|
---|
4217 | case 'g': // 'gg' goto a line number (vim) (default: very first line)
|
---|
4218 | c1 = get_one_char();
|
---|
4219 | if (c1 != 'g') {
|
---|
4220 | buf[0] = 'g';
|
---|
4221 | // c1 < 0 if the key was special. Try "g<up-arrow>"
|
---|
4222 | // TODO: if Unicode?
|
---|
4223 | buf[1] = (c1 >= 0 ? c1 : '*');
|
---|
4224 | buf[2] = '\0';
|
---|
4225 | not_implemented(buf);
|
---|
4226 | break;
|
---|
4227 | }
|
---|
4228 | if (cmdcnt == 0)
|
---|
4229 | cmdcnt = 1;
|
---|
4230 | /* fall through */
|
---|
4231 | case 'G': // G- goto to a line number (default= E-O-F)
|
---|
4232 | dot = end - 1; // assume E-O-F
|
---|
4233 | if (cmdcnt > 0) {
|
---|
4234 | dot = find_line(cmdcnt); // what line is #cmdcnt
|
---|
4235 | }
|
---|
4236 | dot_skip_over_ws();
|
---|
4237 | break;
|
---|
4238 | case 'H': // H- goto top line on screen
|
---|
4239 | dot = screenbegin;
|
---|
4240 | if (cmdcnt > (rows - 1)) {
|
---|
4241 | cmdcnt = (rows - 1);
|
---|
4242 | }
|
---|
4243 | if (--cmdcnt > 0) {
|
---|
4244 | do_cmd('+');
|
---|
4245 | }
|
---|
4246 | dot_skip_over_ws();
|
---|
4247 | break;
|
---|
4248 | case 'I': // I- insert before first non-blank
|
---|
4249 | dot_begin(); // 0
|
---|
4250 | dot_skip_over_ws();
|
---|
4251 | //**** fall through to ... 'i'
|
---|
4252 | case 'i': // i- insert before current char
|
---|
4253 | case KEYCODE_INSERT: // Cursor Key Insert
|
---|
4254 | dc_i:
|
---|
4255 | cmd_mode = 1; // start inserting
|
---|
4256 | undo_queue_commit(); // commit queue when cmd_mode changes
|
---|
4257 | break;
|
---|
4258 | case 'J': // J- join current and next lines together
|
---|
4259 | do {
|
---|
4260 | dot_end(); // move to NL
|
---|
4261 | if (dot < end - 1) { // make sure not last char in text[]
|
---|
4262 | #if ENABLE_FEATURE_VI_UNDO
|
---|
4263 | undo_push(dot, 1, UNDO_DEL);
|
---|
4264 | *dot++ = ' '; // replace NL with space
|
---|
4265 | undo_push((dot - 1), 1, UNDO_INS_CHAIN);
|
---|
4266 | #else
|
---|
4267 | *dot++ = ' ';
|
---|
4268 | modified_count++;
|
---|
4269 | #endif
|
---|
4270 | while (isblank(*dot)) { // delete leading WS
|
---|
4271 | text_hole_delete(dot, dot, ALLOW_UNDO_CHAIN);
|
---|
4272 | }
|
---|
4273 | }
|
---|
4274 | } while (--cmdcnt > 0);
|
---|
4275 | end_cmd_q(); // stop adding to q
|
---|
4276 | break;
|
---|
4277 | case 'L': // L- goto bottom line on screen
|
---|
4278 | dot = end_screen();
|
---|
4279 | if (cmdcnt > (rows - 1)) {
|
---|
4280 | cmdcnt = (rows - 1);
|
---|
4281 | }
|
---|
4282 | if (--cmdcnt > 0) {
|
---|
4283 | do_cmd('-');
|
---|
4284 | }
|
---|
4285 | dot_begin();
|
---|
4286 | dot_skip_over_ws();
|
---|
4287 | break;
|
---|
4288 | case 'M': // M- goto middle line on screen
|
---|
4289 | dot = screenbegin;
|
---|
4290 | for (cnt = 0; cnt < (rows-1) / 2; cnt++)
|
---|
4291 | dot = next_line(dot);
|
---|
4292 | break;
|
---|
4293 | case 'O': // O- open a empty line above
|
---|
4294 | // 0i\n ESC -i
|
---|
4295 | p = begin_line(dot);
|
---|
4296 | if (p[-1] == '\n') {
|
---|
4297 | dot_prev();
|
---|
4298 | case 'o': // o- open a empty line below; Yes, I know it is in the middle of the "if (..."
|
---|
4299 | dot_end();
|
---|
4300 | dot = char_insert(dot, '\n', ALLOW_UNDO);
|
---|
4301 | } else {
|
---|
4302 | dot_begin(); // 0
|
---|
4303 | dot = char_insert(dot, '\n', ALLOW_UNDO); // i\n ESC
|
---|
4304 | dot_prev(); // -
|
---|
4305 | }
|
---|
4306 | goto dc_i;
|
---|
4307 | break;
|
---|
4308 | case 'R': // R- continuous Replace char
|
---|
4309 | dc5:
|
---|
4310 | cmd_mode = 2;
|
---|
4311 | undo_queue_commit();
|
---|
4312 | break;
|
---|
4313 | case KEYCODE_DELETE:
|
---|
4314 | if (dot < end - 1)
|
---|
4315 | dot = yank_delete(dot, dot, 1, YANKDEL, ALLOW_UNDO);
|
---|
4316 | break;
|
---|
4317 | case 'X': // X- delete char before dot
|
---|
4318 | case 'x': // x- delete the current char
|
---|
4319 | case 's': // s- substitute the current char
|
---|
4320 | dir = 0;
|
---|
4321 | if (c == 'X')
|
---|
4322 | dir = -1;
|
---|
4323 | do {
|
---|
4324 | if (dot[dir] != '\n') {
|
---|
4325 | if (c == 'X')
|
---|
4326 | dot--; // delete prev char
|
---|
4327 | dot = yank_delete(dot, dot, 0, YANKDEL, ALLOW_UNDO); // delete char
|
---|
4328 | }
|
---|
4329 | } while (--cmdcnt > 0);
|
---|
4330 | end_cmd_q(); // stop adding to q
|
---|
4331 | if (c == 's')
|
---|
4332 | goto dc_i; // start inserting
|
---|
4333 | break;
|
---|
4334 | case 'Z': // Z- if modified, {write}; exit
|
---|
4335 | // ZZ means to save file (if necessary), then exit
|
---|
4336 | c1 = get_one_char();
|
---|
4337 | if (c1 != 'Z') {
|
---|
4338 | indicate_error();
|
---|
4339 | break;
|
---|
4340 | }
|
---|
4341 | if (modified_count) {
|
---|
4342 | if (ENABLE_FEATURE_VI_READONLY && readonly_mode) {
|
---|
4343 | status_line_bold("'%s' is read only", current_filename);
|
---|
4344 | break;
|
---|
4345 | }
|
---|
4346 | cnt = file_write(current_filename, text, end - 1);
|
---|
4347 | if (cnt < 0) {
|
---|
4348 | if (cnt == -1)
|
---|
4349 | status_line_bold("Write error: %s", strerror(errno));
|
---|
4350 | } else if (cnt == (end - 1 - text + 1)) {
|
---|
4351 | editing = 0;
|
---|
4352 | }
|
---|
4353 | } else {
|
---|
4354 | editing = 0;
|
---|
4355 | }
|
---|
4356 | break;
|
---|
4357 | case '^': // ^- move to first non-blank on line
|
---|
4358 | dot_begin();
|
---|
4359 | dot_skip_over_ws();
|
---|
4360 | break;
|
---|
4361 | case 'b': // b- back a word
|
---|
4362 | case 'e': // e- end of word
|
---|
4363 | dir = FORWARD;
|
---|
4364 | if (c == 'b')
|
---|
4365 | dir = BACK;
|
---|
4366 | do {
|
---|
4367 | if ((dot + dir) < text || (dot + dir) > end - 1)
|
---|
4368 | break;
|
---|
4369 | dot += dir;
|
---|
4370 | if (isspace(*dot)) {
|
---|
4371 | dot = skip_thing(dot, (c == 'e') ? 2 : 1, dir, S_OVER_WS);
|
---|
4372 | }
|
---|
4373 | if (isalnum(*dot) || *dot == '_') {
|
---|
4374 | dot = skip_thing(dot, 1, dir, S_END_ALNUM);
|
---|
4375 | } else if (ispunct(*dot)) {
|
---|
4376 | dot = skip_thing(dot, 1, dir, S_END_PUNCT);
|
---|
4377 | }
|
---|
4378 | } while (--cmdcnt > 0);
|
---|
4379 | break;
|
---|
4380 | case 'c': // c- change something
|
---|
4381 | case 'd': // d- delete something
|
---|
4382 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
4383 | case 'y': // y- yank something
|
---|
4384 | case 'Y': // Y- Yank a line
|
---|
4385 | #endif
|
---|
4386 | {
|
---|
4387 | int yf, ml, whole = 0;
|
---|
4388 | yf = YANKDEL; // assume either "c" or "d"
|
---|
4389 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
4390 | if (c == 'y' || c == 'Y')
|
---|
4391 | yf = YANKONLY;
|
---|
4392 | #endif
|
---|
4393 | c1 = 'y';
|
---|
4394 | if (c != 'Y')
|
---|
4395 | c1 = get_one_char(); // get the type of thing to delete
|
---|
4396 | // determine range, and whether it spans lines
|
---|
4397 | ml = find_range(&p, &q, c1);
|
---|
4398 | place_cursor(0, 0);
|
---|
4399 | if (c1 == 27) { // ESC- user changed mind and wants out
|
---|
4400 | c = c1 = 27; // Escape- do nothing
|
---|
4401 | } else if (strchr("wW", c1)) {
|
---|
4402 | if (c == 'c') {
|
---|
4403 | // don't include trailing WS as part of word
|
---|
4404 | while (isblank(*q)) {
|
---|
4405 | if (q <= text || q[-1] == '\n')
|
---|
4406 | break;
|
---|
4407 | q--;
|
---|
4408 | }
|
---|
4409 | }
|
---|
4410 | dot = yank_delete(p, q, ml, yf, ALLOW_UNDO); // delete word
|
---|
4411 | } else if (strchr("^0bBeEft%$ lh\b\177", c1)) {
|
---|
4412 | // partial line copy text into a register and delete
|
---|
4413 | dot = yank_delete(p, q, ml, yf, ALLOW_UNDO); // delete word
|
---|
4414 | } else if (strchr("cdykjHL+-{}\r\n", c1)) {
|
---|
4415 | // whole line copy text into a register and delete
|
---|
4416 | dot = yank_delete(p, q, ml, yf, ALLOW_UNDO); // delete lines
|
---|
4417 | whole = 1;
|
---|
4418 | } else {
|
---|
4419 | // could not recognize object
|
---|
4420 | c = c1 = 27; // error-
|
---|
4421 | ml = 0;
|
---|
4422 | indicate_error();
|
---|
4423 | }
|
---|
4424 | if (ml && whole) {
|
---|
4425 | if (c == 'c') {
|
---|
4426 | dot = char_insert(dot, '\n', ALLOW_UNDO_CHAIN);
|
---|
4427 | // on the last line of file don't move to prev line
|
---|
4428 | if (whole && dot != (end-1)) {
|
---|
4429 | dot_prev();
|
---|
4430 | }
|
---|
4431 | } else if (c == 'd') {
|
---|
4432 | dot_begin();
|
---|
4433 | dot_skip_over_ws();
|
---|
4434 | }
|
---|
4435 | }
|
---|
4436 | if (c1 != 27) {
|
---|
4437 | // if CHANGING, not deleting, start inserting after the delete
|
---|
4438 | if (c == 'c') {
|
---|
4439 | strcpy(buf, "Change");
|
---|
4440 | goto dc_i; // start inserting
|
---|
4441 | }
|
---|
4442 | if (c == 'd') {
|
---|
4443 | strcpy(buf, "Delete");
|
---|
4444 | }
|
---|
4445 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
4446 | if (c == 'y' || c == 'Y') {
|
---|
4447 | strcpy(buf, "Yank");
|
---|
4448 | }
|
---|
4449 | p = reg[YDreg];
|
---|
4450 | q = p + strlen(p);
|
---|
4451 | for (cnt = 0; p <= q; p++) {
|
---|
4452 | if (*p == '\n')
|
---|
4453 | cnt++;
|
---|
4454 | }
|
---|
4455 | status_line("%s %d lines (%d chars) using [%c]",
|
---|
4456 | buf, cnt, strlen(reg[YDreg]), what_reg());
|
---|
4457 | #endif
|
---|
4458 | end_cmd_q(); // stop adding to q
|
---|
4459 | }
|
---|
4460 | break;
|
---|
4461 | }
|
---|
4462 | case 'k': // k- goto prev line, same col
|
---|
4463 | case KEYCODE_UP: // cursor key Up
|
---|
4464 | do {
|
---|
4465 | dot_prev();
|
---|
4466 | dot = move_to_col(dot, ccol + offset); // try stay in same col
|
---|
4467 | } while (--cmdcnt > 0);
|
---|
4468 | break;
|
---|
4469 | case 'r': // r- replace the current char with user input
|
---|
4470 | c1 = get_one_char(); // get the replacement char
|
---|
4471 | if (*dot != '\n') {
|
---|
4472 | #if ENABLE_FEATURE_VI_UNDO
|
---|
4473 | undo_push(dot, 1, UNDO_DEL);
|
---|
4474 | *dot = c1;
|
---|
4475 | undo_push(dot, 1, UNDO_INS_CHAIN);
|
---|
4476 | #else
|
---|
4477 | *dot = c1;
|
---|
4478 | modified_count++;
|
---|
4479 | #endif
|
---|
4480 | }
|
---|
4481 | end_cmd_q(); // stop adding to q
|
---|
4482 | break;
|
---|
4483 | case 't': // t- move to char prior to next x
|
---|
4484 | last_forward_char = get_one_char();
|
---|
4485 | do_cmd(';');
|
---|
4486 | if (*dot == last_forward_char)
|
---|
4487 | dot_left();
|
---|
4488 | last_forward_char = 0;
|
---|
4489 | break;
|
---|
4490 | case 'w': // w- forward a word
|
---|
4491 | do {
|
---|
4492 | if (isalnum(*dot) || *dot == '_') { // we are on ALNUM
|
---|
4493 | dot = skip_thing(dot, 1, FORWARD, S_END_ALNUM);
|
---|
4494 | } else if (ispunct(*dot)) { // we are on PUNCT
|
---|
4495 | dot = skip_thing(dot, 1, FORWARD, S_END_PUNCT);
|
---|
4496 | }
|
---|
4497 | if (dot < end - 1)
|
---|
4498 | dot++; // move over word
|
---|
4499 | if (isspace(*dot)) {
|
---|
4500 | dot = skip_thing(dot, 2, FORWARD, S_OVER_WS);
|
---|
4501 | }
|
---|
4502 | } while (--cmdcnt > 0);
|
---|
4503 | break;
|
---|
4504 | case 'z': // z-
|
---|
4505 | c1 = get_one_char(); // get the replacement char
|
---|
4506 | cnt = 0;
|
---|
4507 | if (c1 == '.')
|
---|
4508 | cnt = (rows - 2) / 2; // put dot at center
|
---|
4509 | if (c1 == '-')
|
---|
4510 | cnt = rows - 2; // put dot at bottom
|
---|
4511 | screenbegin = begin_line(dot); // start dot at top
|
---|
4512 | dot_scroll(cnt, -1);
|
---|
4513 | break;
|
---|
4514 | case '|': // |- move to column "cmdcnt"
|
---|
4515 | dot = move_to_col(dot, cmdcnt - 1); // try to move to column
|
---|
4516 | break;
|
---|
4517 | case '~': // ~- flip the case of letters a-z -> A-Z
|
---|
4518 | do {
|
---|
4519 | #if ENABLE_FEATURE_VI_UNDO
|
---|
4520 | if (islower(*dot)) {
|
---|
4521 | undo_push(dot, 1, UNDO_DEL);
|
---|
4522 | *dot = toupper(*dot);
|
---|
4523 | undo_push(dot, 1, UNDO_INS_CHAIN);
|
---|
4524 | } else if (isupper(*dot)) {
|
---|
4525 | undo_push(dot, 1, UNDO_DEL);
|
---|
4526 | *dot = tolower(*dot);
|
---|
4527 | undo_push(dot, 1, UNDO_INS_CHAIN);
|
---|
4528 | }
|
---|
4529 | #else
|
---|
4530 | if (islower(*dot)) {
|
---|
4531 | *dot = toupper(*dot);
|
---|
4532 | modified_count++;
|
---|
4533 | } else if (isupper(*dot)) {
|
---|
4534 | *dot = tolower(*dot);
|
---|
4535 | modified_count++;
|
---|
4536 | }
|
---|
4537 | #endif
|
---|
4538 | dot_right();
|
---|
4539 | } while (--cmdcnt > 0);
|
---|
4540 | end_cmd_q(); // stop adding to q
|
---|
4541 | break;
|
---|
4542 | //----- The Cursor and Function Keys -----------------------------
|
---|
4543 | case KEYCODE_HOME: // Cursor Key Home
|
---|
4544 | dot_begin();
|
---|
4545 | break;
|
---|
4546 | // The Fn keys could point to do_macro which could translate them
|
---|
4547 | #if 0
|
---|
4548 | case KEYCODE_FUN1: // Function Key F1
|
---|
4549 | case KEYCODE_FUN2: // Function Key F2
|
---|
4550 | case KEYCODE_FUN3: // Function Key F3
|
---|
4551 | case KEYCODE_FUN4: // Function Key F4
|
---|
4552 | case KEYCODE_FUN5: // Function Key F5
|
---|
4553 | case KEYCODE_FUN6: // Function Key F6
|
---|
4554 | case KEYCODE_FUN7: // Function Key F7
|
---|
4555 | case KEYCODE_FUN8: // Function Key F8
|
---|
4556 | case KEYCODE_FUN9: // Function Key F9
|
---|
4557 | case KEYCODE_FUN10: // Function Key F10
|
---|
4558 | case KEYCODE_FUN11: // Function Key F11
|
---|
4559 | case KEYCODE_FUN12: // Function Key F12
|
---|
4560 | break;
|
---|
4561 | #endif
|
---|
4562 | }
|
---|
4563 |
|
---|
4564 | dc1:
|
---|
4565 | // if text[] just became empty, add back an empty line
|
---|
4566 | if (end == text) {
|
---|
4567 | char_insert(text, '\n', NO_UNDO); // start empty buf with dummy line
|
---|
4568 | dot = text;
|
---|
4569 | }
|
---|
4570 | // it is OK for dot to exactly equal to end, otherwise check dot validity
|
---|
4571 | if (dot != end) {
|
---|
4572 | dot = bound_dot(dot); // make sure "dot" is valid
|
---|
4573 | }
|
---|
4574 | #if ENABLE_FEATURE_VI_YANKMARK
|
---|
4575 | check_context(c); // update the current context
|
---|
4576 | #endif
|
---|
4577 |
|
---|
4578 | if (!isdigit(c))
|
---|
4579 | cmdcnt = 0; // cmd was not a number, reset cmdcnt
|
---|
4580 | cnt = dot - begin_line(dot);
|
---|
4581 | // Try to stay off of the Newline
|
---|
4582 | if (*dot == '\n' && cnt > 0 && cmd_mode == 0)
|
---|
4583 | #ifndef ENABLE_BASIC_MULTI_CHAR_CODE
|
---|
4584 | dot--;
|
---|
4585 | #else
|
---|
4586 | dot -= bs_char_count(text, dot - text - 1);
|
---|
4587 | #endif
|
---|
4588 | }
|
---|
4589 |
|
---|
4590 | /* NB! the CRASHME code is unmaintained, and doesn't currently build */
|
---|
4591 | #if ENABLE_FEATURE_VI_CRASHME
|
---|
4592 | static int totalcmds = 0;
|
---|
4593 | static int Mp = 85; // Movement command Probability
|
---|
4594 | static int Np = 90; // Non-movement command Probability
|
---|
4595 | static int Dp = 96; // Delete command Probability
|
---|
4596 | static int Ip = 97; // Insert command Probability
|
---|
4597 | static int Yp = 98; // Yank command Probability
|
---|
4598 | static int Pp = 99; // Put command Probability
|
---|
4599 | static int M = 0, N = 0, I = 0, D = 0, Y = 0, P = 0, U = 0;
|
---|
4600 | static const char chars[20] = "\t012345 abcdABCD-=.$";
|
---|
4601 | static const char *const words[20] = {
|
---|
4602 | "this", "is", "a", "test",
|
---|
4603 | "broadcast", "the", "emergency", "of",
|
---|
4604 | "system", "quick", "brown", "fox",
|
---|
4605 | "jumped", "over", "lazy", "dogs",
|
---|
4606 | "back", "January", "Febuary", "March"
|
---|
4607 | };
|
---|
4608 | static const char *const lines[20] = {
|
---|
4609 | "You should have received a copy of the GNU General Public License\n",
|
---|
4610 | "char c, cm, *cmd, *cmd1;\n",
|
---|
4611 | "generate a command by percentages\n",
|
---|
4612 | "Numbers may be typed as a prefix to some commands.\n",
|
---|
4613 | "Quit, discarding changes!\n",
|
---|
4614 | "Forced write, if permission originally not valid.\n",
|
---|
4615 | "In general, any ex or ed command (such as substitute or delete).\n",
|
---|
4616 | "I have tickets available for the Blazers vs LA Clippers for Monday, Janurary 1 at 1:00pm.\n",
|
---|
4617 | "Please get w/ me and I will go over it with you.\n",
|
---|
4618 | "The following is a list of scheduled, committed changes.\n",
|
---|
4619 | "1. Launch Norton Antivirus (Start, Programs, Norton Antivirus)\n",
|
---|
4620 | "Reminder....Town Meeting in Central Perk cafe today at 3:00pm.\n",
|
---|
4621 | "Any question about transactions please contact Sterling Huxley.\n",
|
---|
4622 | "I will try to get back to you by Friday, December 31.\n",
|
---|
4623 | "This Change will be implemented on Friday.\n",
|
---|
4624 | "Let me know if you have problems accessing this;\n",
|
---|
4625 | "Sterling Huxley recently added you to the access list.\n",
|
---|
4626 | "Would you like to go to lunch?\n",
|
---|
4627 | "The last command will be automatically run.\n",
|
---|
4628 | "This is too much english for a computer geek.\n",
|
---|
4629 | };
|
---|
4630 | static char *multilines[20] = {
|
---|
4631 | "You should have received a copy of the GNU General Public License\n",
|
---|
4632 | "char c, cm, *cmd, *cmd1;\n",
|
---|
4633 | "generate a command by percentages\n",
|
---|
4634 | "Numbers may be typed as a prefix to some commands.\n",
|
---|
4635 | "Quit, discarding changes!\n",
|
---|
4636 | "Forced write, if permission originally not valid.\n",
|
---|
4637 | "In general, any ex or ed command (such as substitute or delete).\n",
|
---|
4638 | "I have tickets available for the Blazers vs LA Clippers for Monday, Janurary 1 at 1:00pm.\n",
|
---|
4639 | "Please get w/ me and I will go over it with you.\n",
|
---|
4640 | "The following is a list of scheduled, committed changes.\n",
|
---|
4641 | "1. Launch Norton Antivirus (Start, Programs, Norton Antivirus)\n",
|
---|
4642 | "Reminder....Town Meeting in Central Perk cafe today at 3:00pm.\n",
|
---|
4643 | "Any question about transactions please contact Sterling Huxley.\n",
|
---|
4644 | "I will try to get back to you by Friday, December 31.\n",
|
---|
4645 | "This Change will be implemented on Friday.\n",
|
---|
4646 | "Let me know if you have problems accessing this;\n",
|
---|
4647 | "Sterling Huxley recently added you to the access list.\n",
|
---|
4648 | "Would you like to go to lunch?\n",
|
---|
4649 | "The last command will be automatically run.\n",
|
---|
4650 | "This is too much english for a computer geek.\n",
|
---|
4651 | };
|
---|
4652 |
|
---|
4653 | // create a random command to execute
|
---|
4654 | static void crash_dummy()
|
---|
4655 | {
|
---|
4656 | static int sleeptime; // how long to pause between commands
|
---|
4657 | char c, cm, *cmd, *cmd1;
|
---|
4658 | int i, cnt, thing, rbi, startrbi, percent;
|
---|
4659 |
|
---|
4660 | // "dot" movement commands
|
---|
4661 | cmd1 = " \n\r\002\004\005\006\025\0310^$-+wWeEbBhjklHL";
|
---|
4662 |
|
---|
4663 | // is there already a command running?
|
---|
4664 | if (readbuffer[0] > 0)
|
---|
4665 | goto cd1;
|
---|
4666 | cd0:
|
---|
4667 | readbuffer[0] = 'X';
|
---|
4668 | startrbi = rbi = 1;
|
---|
4669 | sleeptime = 0; // how long to pause between commands
|
---|
4670 | memset(readbuffer, '\0', sizeof(readbuffer));
|
---|
4671 | // generate a command by percentages
|
---|
4672 | percent = (int) lrand48() % 100; // get a number from 0-99
|
---|
4673 | if (percent < Mp) { // Movement commands
|
---|
4674 | // available commands
|
---|
4675 | cmd = cmd1;
|
---|
4676 | M++;
|
---|
4677 | } else if (percent < Np) { // non-movement commands
|
---|
4678 | cmd = "mz<>\'\""; // available commands
|
---|
4679 | N++;
|
---|
4680 | } else if (percent < Dp) { // Delete commands
|
---|
4681 | cmd = "dx"; // available commands
|
---|
4682 | D++;
|
---|
4683 | } else if (percent < Ip) { // Inset commands
|
---|
4684 | cmd = "iIaAsrJ"; // available commands
|
---|
4685 | I++;
|
---|
4686 | } else if (percent < Yp) { // Yank commands
|
---|
4687 | cmd = "yY"; // available commands
|
---|
4688 | Y++;
|
---|
4689 | } else if (percent < Pp) { // Put commands
|
---|
4690 | cmd = "pP"; // available commands
|
---|
4691 | P++;
|
---|
4692 | } else {
|
---|
4693 | // We do not know how to handle this command, try again
|
---|
4694 | U++;
|
---|
4695 | goto cd0;
|
---|
4696 | }
|
---|
4697 | // randomly pick one of the available cmds from "cmd[]"
|
---|
4698 | i = (int) lrand48() % strlen(cmd);
|
---|
4699 | cm = cmd[i];
|
---|
4700 | if (strchr(":\024", cm))
|
---|
4701 | goto cd0; // dont allow colon or ctrl-T commands
|
---|
4702 | readbuffer[rbi++] = cm; // put cmd into input buffer
|
---|
4703 |
|
---|
4704 | // now we have the command-
|
---|
4705 | // there are 1, 2, and multi char commands
|
---|
4706 | // find out which and generate the rest of command as necessary
|
---|
4707 | if (strchr("dmryz<>\'\"", cm)) { // 2-char commands
|
---|
4708 | cmd1 = " \n\r0$^-+wWeEbBhjklHL";
|
---|
4709 | if (cm == 'm' || cm == '\'' || cm == '\"') { // pick a reg[]
|
---|
4710 | cmd1 = "abcdefghijklmnopqrstuvwxyz";
|
---|
4711 | }
|
---|
4712 | thing = (int) lrand48() % strlen(cmd1); // pick a movement command
|
---|
4713 | c = cmd1[thing];
|
---|
4714 | readbuffer[rbi++] = c; // add movement to input buffer
|
---|
4715 | }
|
---|
4716 | if (strchr("iIaAsc", cm)) { // multi-char commands
|
---|
4717 | if (cm == 'c') {
|
---|
4718 | // change some thing
|
---|
4719 | thing = (int) lrand48() % strlen(cmd1); // pick a movement command
|
---|
4720 | c = cmd1[thing];
|
---|
4721 | readbuffer[rbi++] = c; // add movement to input buffer
|
---|
4722 | }
|
---|
4723 | thing = (int) lrand48() % 4; // what thing to insert
|
---|
4724 | cnt = (int) lrand48() % 10; // how many to insert
|
---|
4725 | for (i = 0; i < cnt; i++) {
|
---|
4726 | if (thing == 0) { // insert chars
|
---|
4727 | readbuffer[rbi++] = chars[((int) lrand48() % strlen(chars))];
|
---|
4728 | } else if (thing == 1) { // insert words
|
---|
4729 | strcat(readbuffer, words[(int) lrand48() % 20]);
|
---|
4730 | strcat(readbuffer, " ");
|
---|
4731 | sleeptime = 0; // how fast to type
|
---|
4732 | } else if (thing == 2) { // insert lines
|
---|
4733 | strcat(readbuffer, lines[(int) lrand48() % 20]);
|
---|
4734 | sleeptime = 0; // how fast to type
|
---|
4735 | } else { // insert multi-lines
|
---|
4736 | strcat(readbuffer, multilines[(int) lrand48() % 20]);
|
---|
4737 | sleeptime = 0; // how fast to type
|
---|
4738 | }
|
---|
4739 | }
|
---|
4740 | strcat(readbuffer, "\033");
|
---|
4741 | }
|
---|
4742 | readbuffer[0] = strlen(readbuffer + 1);
|
---|
4743 | cd1:
|
---|
4744 | totalcmds++;
|
---|
4745 | if (sleeptime > 0)
|
---|
4746 | mysleep(sleeptime); // sleep 1/100 sec
|
---|
4747 | }
|
---|
4748 |
|
---|
4749 | // test to see if there are any errors
|
---|
4750 | static void crash_test()
|
---|
4751 | {
|
---|
4752 | static time_t oldtim;
|
---|
4753 |
|
---|
4754 | time_t tim;
|
---|
4755 | char d[2], msg[80];
|
---|
4756 |
|
---|
4757 | msg[0] = '\0';
|
---|
4758 | if (end < text) {
|
---|
4759 | strcat(msg, "end<text ");
|
---|
4760 | }
|
---|
4761 | if (end > textend) {
|
---|
4762 | strcat(msg, "end>textend ");
|
---|
4763 | }
|
---|
4764 | if (dot < text) {
|
---|
4765 | strcat(msg, "dot<text ");
|
---|
4766 | }
|
---|
4767 | if (dot > end) {
|
---|
4768 | strcat(msg, "dot>end ");
|
---|
4769 | }
|
---|
4770 | if (screenbegin < text) {
|
---|
4771 | strcat(msg, "screenbegin<text ");
|
---|
4772 | }
|
---|
4773 | if (screenbegin > end - 1) {
|
---|
4774 | strcat(msg, "screenbegin>end-1 ");
|
---|
4775 | }
|
---|
4776 |
|
---|
4777 | if (msg[0]) {
|
---|
4778 | printf("\n\n%d: \'%c\' %s\n\n\n%s[Hit return to continue]%s",
|
---|
4779 | totalcmds, last_input_char, msg, ESC_BOLD_TEXT, ESC_NORM_TEXT);
|
---|
4780 | fflush_all();
|
---|
4781 | while (safe_read(STDIN_FILENO, d, 1) > 0) {
|
---|
4782 | if (d[0] == '\n' || d[0] == '\r')
|
---|
4783 | break;
|
---|
4784 | }
|
---|
4785 | }
|
---|
4786 | tim = time(NULL);
|
---|
4787 | if (tim >= (oldtim + 3)) {
|
---|
4788 | sprintf(status_buffer,
|
---|
4789 | "Tot=%d: M=%d N=%d I=%d D=%d Y=%d P=%d U=%d size=%d",
|
---|
4790 | totalcmds, M, N, I, D, Y, P, U, end - text + 1);
|
---|
4791 | oldtim = tim;
|
---|
4792 | }
|
---|
4793 | }
|
---|
4794 | #endif
|
---|