[279] | 1 | /*
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| 2 | ** cmdmisc.c - mruby debugger miscellaneous command functions
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| 3 | **
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| 4 | */
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| 5 |
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[439] | 6 | #include <ctype.h>
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[279] | 7 | #include <stdlib.h>
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| 8 | #include <string.h>
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| 9 |
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[439] | 10 | #include "apilist.h"
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| 11 | #include <mruby/compile.h>
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[279] | 12 |
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[439] | 13 | typedef struct help_msg {
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| 14 | const char *cmd1;
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| 15 | const char *cmd2;
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| 16 | const char *short_msg;
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| 17 | const char *long_msg;
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[279] | 18 | } help_msg;
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| 19 |
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| 20 | static help_msg help_msg_list[] = {
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| 21 | {
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[439] | 22 | "b[reak]", NULL, "Set breakpoint",
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| 23 | "Usage: break [file:]line\n"
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| 24 | " break [class:]method\n"
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| 25 | "\n"
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| 26 | "Set breakpoint at specified line or method.\n"
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| 27 | "If \'[file:]line\' is specified, break at start of code for that line (in a file).\n"
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| 28 | "If \'[class:]method\' is specified, break at start of code for that method (of the class).\n"
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[279] | 29 | },
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| 30 | {
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[439] | 31 | "c[ontinue]", NULL, "Continue program being debugged",
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| 32 | "Usage: continue [N]\n"
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| 33 | "\n"
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| 34 | "Continue program stopped by a breakpoint.\n"
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| 35 | "If N, which is non negative value, is passed,\n"
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| 36 | "proceed program until the N-th breakpoint is coming.\n"
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| 37 | "If N is not passed, N is assumed 1.\n"
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[279] | 38 | },
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| 39 | {
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[439] | 40 | "d[elete]", NULL, "Delete some breakpoints",
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| 41 | "Usage: delete [bpno1 [bpno2 [... [bpnoN]]]]\n"
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| 42 | "\n"
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| 43 | "Delete some breakpoints.\n"
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| 44 | "Arguments are breakpoint numbers with spaces in between.\n"
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| 45 | "To delete all breakpoints, give no argument.\n"
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[279] | 46 | },
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| 47 | {
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[439] | 48 | "dis[able]", NULL, "Disable some breakpoints",
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| 49 | "Usage: disable [bpno1 [bpno2 [... [bpnoN]]]]\n"
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| 50 | "\n"
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| 51 | "Disable some breakpoints.\n"
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| 52 | "Arguments are breakpoint numbers with spaces in between.\n"
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| 53 | "To disable all breakpoints, give no argument.\n"
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[279] | 54 | },
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| 55 | {
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[439] | 56 | "en[able]", NULL, "Enable some breakpoints",
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| 57 | "Usage: enable [bpno1 [bpno2 [... [bpnoN]]]]\n"
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| 58 | "\n"
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| 59 | "Enable some breakpoints.\n"
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| 60 | "Arguments are breakpoint numbers with spaces in between.\n"
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| 61 | "To enable all breakpoints, give no argument.\n"
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[279] | 62 | },
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| 63 | {
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[439] | 64 | "ev[al]", NULL, "Evaluate expression",
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| 65 | "Usage: eval expr\n"
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| 66 | "\n"
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| 67 | "It evaluates and prints the value of the mruby expression.\n"
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| 68 | "This is equivalent to the \'print\' command.\n"
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[279] | 69 | },
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| 70 | {
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[439] | 71 | "h[elp]", NULL, "Print this help",
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| 72 | "Usage: help [command]\n"
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| 73 | "\n"
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| 74 | "With no arguments, help displays a short list of commands.\n"
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| 75 | "With a command name as help argument, help displays how to use that command.\n"
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[279] | 76 | },
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| 77 | {
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[439] | 78 | "i[nfo]", "b[reakpoints]", "Status of breakpoints",
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| 79 | "Usage: info breakpoints [bpno1 [bpno2 [... [bpnoN]]]]\n"
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| 80 | "\n"
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| 81 | "Status of specified breakpoints (all user-settable breakpoints if no argument).\n"
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| 82 | "Arguments are breakpoint numbers with spaces in between.\n"
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[279] | 83 | },
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| 84 | {
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[439] | 85 | "i[nfo]", "l[ocals]", "Print name of local variables",
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| 86 | "Usage: info locals\n"
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| 87 | "\n"
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| 88 | "Print name of local variables.\n"
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[279] | 89 | },
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| 90 | {
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[439] | 91 | "l[ist]", NULL, "List specified line",
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| 92 | "Usage: list\n"
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| 93 | " list first[,last]\n"
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| 94 | " list filename:first[,last]\n"
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| 95 | "\n"
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| 96 | "Print lines from a source file.\n"
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| 97 | "\n"
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| 98 | "With first and last, list prints lines from first to last.\n"
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| 99 | "When last is empty, it stands for ten lines away from first.\n"
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| 100 | "With filename, list prints lines in the specified source file.\n"
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[279] | 101 | },
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| 102 | {
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[439] | 103 | "p[rint]", NULL, "Print value of expression",
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| 104 | "Usage: print expr\n"
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| 105 | "\n"
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| 106 | "It evaluates and prints the value of the mruby expression.\n"
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| 107 | "This is equivalent to the \'eval\' command.\n"
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[279] | 108 | },
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| 109 | {
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[439] | 110 | "q[uit]", NULL, "Exit mrdb",
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| 111 | "Usage: quit\n"
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| 112 | "\n"
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| 113 | "Exit mrdb.\n"
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[279] | 114 | },
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| 115 | {
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[439] | 116 | "r[un]", NULL, "Start debugged program",
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| 117 | "Usage: run\n"
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| 118 | "\n"
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| 119 | "Start debugged program.\n"
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[279] | 120 | },
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[439] | 121 | {
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| 122 | "s[tep]", NULL, "Step program until it reaches a different source line",
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| 123 | "Usage: step\n"
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| 124 | "\n"
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| 125 | "Step program until it reaches a different source line.\n"
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| 126 | },
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[279] | 127 | { NULL, NULL, NULL, NULL }
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| 128 | };
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| 129 |
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[439] | 130 | typedef struct listcmd_parser_state {
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| 131 | mrb_bool parse_error;
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| 132 | mrb_bool has_line_min;
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| 133 | mrb_bool has_line_max;
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| 134 | char *filename;
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| 135 | uint16_t line_min;
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| 136 | uint16_t line_max;
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[279] | 137 | } listcmd_parser_state;
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| 138 |
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| 139 | static listcmd_parser_state*
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| 140 | listcmd_parser_state_new(mrb_state *mrb)
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| 141 | {
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[439] | 142 | listcmd_parser_state *st = (listcmd_parser_state*)mrb_malloc(mrb, sizeof(listcmd_parser_state));
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| 143 | memset(st, 0, sizeof(listcmd_parser_state));
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| 144 | return st;
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[279] | 145 | }
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| 146 |
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| 147 | static void
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| 148 | listcmd_parser_state_free(mrb_state *mrb, listcmd_parser_state *st)
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| 149 | {
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[439] | 150 | if (st != NULL) {
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| 151 | if (st->filename != NULL) {
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| 152 | mrb_free(mrb, st->filename);
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| 153 | }
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| 154 | mrb_free(mrb, st);
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| 155 | }
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[279] | 156 | }
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| 157 |
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| 158 | static mrb_bool
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| 159 | parse_uint(char **sp, uint16_t *n)
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| 160 | {
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[439] | 161 | char *p;
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| 162 | int i;
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[279] | 163 |
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[439] | 164 | if (*sp == NULL || **sp == '\0') {
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| 165 | return FALSE;
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| 166 | }
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[279] | 167 |
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[439] | 168 | for (p = *sp; *p != '\0' && ISDIGIT(*p); p++) ;
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[279] | 169 |
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[439] | 170 | if (p != *sp && (i = atoi(*sp)) >= 0) {
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| 171 | *n = (uint16_t)i;
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| 172 | *sp = p;
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| 173 | return TRUE;
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| 174 | }
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| 175 | return FALSE;
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[279] | 176 | }
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| 177 |
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| 178 | static mrb_bool
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| 179 | skip_char(char **sp, char c)
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| 180 | {
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[439] | 181 | if (*sp != NULL && **sp == c) {
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| 182 | ++*sp;
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| 183 | return TRUE;
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| 184 | }
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| 185 | return FALSE;
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[279] | 186 | }
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| 187 |
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| 188 | static mrb_bool
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| 189 | parse_lineno(mrb_state *mrb, char **sp, listcmd_parser_state *st)
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| 190 | {
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[439] | 191 | if (*sp == NULL || **sp == '\0') {
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| 192 | return FALSE;
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| 193 | }
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[279] | 194 |
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[439] | 195 | st->has_line_min = FALSE;
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| 196 | st->has_line_max = FALSE;
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[279] | 197 |
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[439] | 198 | if (parse_uint(sp, &st->line_min)) {
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| 199 | st->has_line_min = TRUE;
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| 200 | }
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| 201 | else {
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| 202 | return FALSE;
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| 203 | }
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[279] | 204 |
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[439] | 205 | if (skip_char(sp, ',')) {
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| 206 | if (parse_uint(sp, &st->line_max)) {
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| 207 | st->has_line_max = TRUE;
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| 208 | }
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| 209 | else {
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| 210 | st->parse_error = TRUE;
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| 211 | return FALSE;
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| 212 | }
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| 213 | }
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| 214 | return TRUE;
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[279] | 215 | }
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| 216 |
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| 217 | static mrb_bool
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| 218 | parse_filename(mrb_state *mrb, char **sp, listcmd_parser_state *st)
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| 219 | {
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[439] | 220 | char *p;
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| 221 | int len;
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[279] | 222 |
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[439] | 223 | if (st->filename != NULL) {
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| 224 | mrb_free(mrb, st->filename);
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| 225 | st->filename = NULL;
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| 226 | }
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[279] | 227 |
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[439] | 228 | if ((p = strchr(*sp, ':')) != NULL) {
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| 229 | len = p - *sp;
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| 230 | }
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| 231 | else {
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| 232 | len = strlen(*sp);
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| 233 | }
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[279] | 234 |
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[439] | 235 | if (len > 0) {
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| 236 | st->filename = (char*)mrb_malloc(mrb, len + 1);
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| 237 | strncpy(st->filename, *sp, len);
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| 238 | st->filename[len] = '\0';
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| 239 | *sp += len;
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| 240 | return TRUE;
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| 241 | }
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| 242 | else {
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| 243 | return FALSE;
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| 244 | }
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[279] | 245 | }
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| 246 |
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| 247 | char*
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| 248 | replace_ext(mrb_state *mrb, const char *filename, const char *ext)
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| 249 | {
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[439] | 250 | size_t len;
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| 251 | const char *p;
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| 252 | char *s;
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[279] | 253 |
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[439] | 254 | if (filename == NULL) {
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| 255 | return NULL;
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| 256 | }
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[279] | 257 |
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[439] | 258 | if ((p = strrchr(filename, '.')) != NULL && strchr(p, '/') == NULL) {
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| 259 | len = p - filename;
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| 260 | }
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| 261 | else {
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| 262 | len = strlen(filename);
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| 263 | }
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[279] | 264 |
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[439] | 265 | s = (char*)mrb_malloc(mrb, len + strlen(ext) + 1);
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| 266 | memset(s, '\0', len + strlen(ext) + 1);
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| 267 | strncpy(s, filename, len);
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| 268 | strcat(s, ext);
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[279] | 269 |
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[439] | 270 | return s;
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[279] | 271 | }
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| 272 |
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| 273 | static mrb_bool
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| 274 | parse_listcmd_args(mrb_state *mrb, mrdb_state *mrdb, listcmd_parser_state *st)
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| 275 | {
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[439] | 276 | char *p;
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[279] | 277 |
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[439] | 278 | switch (mrdb->wcnt) {
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| 279 | case 2:
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| 280 | p = mrdb->words[1];
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[279] | 281 |
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[439] | 282 | /* mrdb->words[1] ::= <lineno> | <filename> ':' <lineno> | <filename> */
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| 283 | if (!parse_lineno(mrb, &p, st)) {
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| 284 | if (parse_filename(mrb, &p, st)) {
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| 285 | if (skip_char(&p, ':')) {
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| 286 | if (!parse_lineno(mrb, &p, st)) {
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| 287 | st->parse_error = TRUE;
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| 288 | }
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| 289 | }
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| 290 | }
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| 291 | else {
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| 292 | st->parse_error = TRUE;
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| 293 | }
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| 294 | }
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| 295 | if (*p != '\0') {
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| 296 | st->parse_error = TRUE;
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| 297 | }
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| 298 | break;
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| 299 | case 1:
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| 300 | case 0:
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| 301 | /* do nothing */
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| 302 | break;
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| 303 | default:
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| 304 | st->parse_error = TRUE;
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| 305 | printf("too many arguments\n");
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| 306 | break;
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| 307 | }
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[279] | 308 |
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[439] | 309 | if (!st->parse_error) {
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| 310 | if (!st->has_line_min) {
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| 311 | st->line_min = (!st->filename && mrdb->dbg->prvline > 0) ? mrdb->dbg->prvline : 1;
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| 312 | }
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[279] | 313 |
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[439] | 314 | if (!st->has_line_max) {
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| 315 | st->line_max = st->line_min + 9;
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| 316 | }
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[279] | 317 |
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[439] | 318 | if (st->filename == NULL) {
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| 319 | if (mrdb->dbg->prvfile && strcmp(mrdb->dbg->prvfile, "-")) {
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| 320 | st->filename = replace_ext(mrb, mrdb->dbg->prvfile, ".rb");
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| 321 | }
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| 322 | }
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| 323 | }
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[279] | 324 |
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[439] | 325 | if (st->parse_error || st->filename == NULL) {
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| 326 | return FALSE;
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| 327 | }
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[279] | 328 |
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[439] | 329 | return TRUE;
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[279] | 330 | }
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| 331 |
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| 332 | static mrb_bool
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| 333 | check_cmd_pattern(const char *pattern, const char *cmd)
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| 334 | {
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[439] | 335 | const char *lbracket, *rbracket, *p, *q;
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[279] | 336 |
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[439] | 337 | if (pattern == NULL && cmd == NULL) {
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| 338 | return TRUE;
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| 339 | }
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| 340 | if (pattern == NULL || cmd == NULL) {
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| 341 | return FALSE;
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| 342 | }
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| 343 | if ((lbracket = strchr(pattern, '[')) == NULL) {
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| 344 | return !strcmp(pattern, cmd);
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| 345 | }
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| 346 | if ((rbracket = strchr(pattern, ']')) == NULL) {
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| 347 | return FALSE;
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| 348 | }
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| 349 | if (strncmp(pattern, cmd, lbracket - pattern)) {
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| 350 | return FALSE;
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| 351 | }
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[279] | 352 |
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[439] | 353 | p = lbracket + 1;
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| 354 | q = (char *)cmd + (lbracket - pattern);
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[279] | 355 |
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[439] | 356 | for ( ; p < rbracket && *q != '\0'; p++, q++) {
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| 357 | if (*p != *q) {
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| 358 | break;
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| 359 | }
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| 360 | }
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| 361 | return *q == '\0';
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[279] | 362 | }
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| 363 |
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| 364 | static help_msg*
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| 365 | get_help_msg(char *cmd1, char *cmd2)
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| 366 | {
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[439] | 367 | help_msg *p;
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[279] | 368 |
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[439] | 369 | if (cmd1 == NULL) {
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| 370 | return NULL;
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| 371 | }
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| 372 | for (p = help_msg_list; p->cmd1 != NULL; p++) {
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| 373 | if (check_cmd_pattern(p->cmd1, cmd1) && check_cmd_pattern(p->cmd2, cmd2)) {
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| 374 | return p;
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| 375 | }
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| 376 | }
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| 377 | return NULL;
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[279] | 378 | }
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| 379 |
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| 380 | static mrb_bool
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| 381 | show_short_help(void)
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| 382 | {
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[439] | 383 | help_msg *p;
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[279] | 384 |
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[439] | 385 | printf("Commands\n");
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[279] | 386 |
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[439] | 387 | for (p = help_msg_list; p->cmd1 != NULL; p++) {
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| 388 | if (p->cmd2 == NULL) {
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| 389 | printf(" %s -- %s\n", p->cmd1, p->short_msg);
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| 390 | }
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| 391 | else {
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| 392 | printf(" %s %s -- %s\n", p->cmd1, p->cmd2, p->short_msg);
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| 393 | }
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| 394 | }
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| 395 | return TRUE;
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[279] | 396 | }
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| 397 |
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| 398 | static mrb_bool
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| 399 | show_long_help(char *cmd1, char *cmd2)
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| 400 | {
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[439] | 401 | help_msg *help;
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[279] | 402 |
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[439] | 403 | if ((help = get_help_msg(cmd1, cmd2)) == NULL) {
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| 404 | return FALSE;
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| 405 | }
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| 406 | printf("%s", help->long_msg);
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| 407 | return TRUE;
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[279] | 408 | }
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| 409 |
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| 410 | dbgcmd_state
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[439] | 411 | dbgcmd_list(mrb_state *mrb, mrdb_state *mrdb)
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| 412 | {
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| 413 | char *filename;
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| 414 | listcmd_parser_state *st = listcmd_parser_state_new(mrb);
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| 415 |
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| 416 | if (parse_listcmd_args(mrb, mrdb, st)) {
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| 417 | if ((filename = mrb_debug_get_source(mrb, mrdb, mrdb->srcpath, st->filename)) == NULL) {
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| 418 | filename = st->filename;
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| 419 | }
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| 420 | mrb_debug_list(mrb, mrdb->dbg, filename, st->line_min, st->line_max);
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| 421 |
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| 422 | if (filename != NULL && filename != st->filename) {
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| 423 | mrb_free(mrb, filename);
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| 424 | }
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| 425 | listcmd_parser_state_free(mrb, st);
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| 426 | }
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| 427 |
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| 428 | return DBGST_PROMPT;
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| 429 | }
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| 430 |
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| 431 | dbgcmd_state
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[279] | 432 | dbgcmd_help(mrb_state *mrb, mrdb_state *mrdb)
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| 433 | {
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[439] | 434 | mrb_bool is_valid;
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| 435 | int i;
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[279] | 436 |
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[439] | 437 | switch (mrdb->wcnt) {
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| 438 | case 0:
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| 439 | case 1:
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| 440 | is_valid = show_short_help();
|
---|
| 441 | break;
|
---|
| 442 | case 2:
|
---|
| 443 | is_valid = show_long_help(mrdb->words[1], NULL);
|
---|
| 444 | break;
|
---|
| 445 | case 3:
|
---|
| 446 | is_valid = show_long_help(mrdb->words[1], mrdb->words[2]);
|
---|
| 447 | break;
|
---|
| 448 | default:
|
---|
| 449 | is_valid = FALSE;
|
---|
| 450 | break;
|
---|
| 451 | }
|
---|
[279] | 452 |
|
---|
[439] | 453 | if (!is_valid) {
|
---|
| 454 | printf("Invalid command \"");
|
---|
| 455 | for (i = 1; i < mrdb->wcnt; i++) {
|
---|
| 456 | printf("%s%s", i == 1 ? "" : " ", mrdb->words[i]);
|
---|
| 457 | }
|
---|
| 458 | printf("\". Try \"help\".\n");
|
---|
| 459 | }
|
---|
[279] | 460 |
|
---|
[439] | 461 | return DBGST_PROMPT;
|
---|
[279] | 462 | }
|
---|
| 463 |
|
---|
| 464 | dbgcmd_state
|
---|
| 465 | dbgcmd_quit(mrb_state *mrb, mrdb_state *mrdb)
|
---|
| 466 | {
|
---|
[439] | 467 | switch (mrdb->dbg->xm) {
|
---|
| 468 | case DBG_RUN:
|
---|
| 469 | case DBG_STEP:
|
---|
| 470 | case DBG_NEXT:
|
---|
| 471 | while (1) {
|
---|
| 472 | char c;
|
---|
| 473 | int buf;
|
---|
[279] | 474 |
|
---|
[439] | 475 | printf("The program is running. Exit anyway? (y or n) ");
|
---|
| 476 | fflush(stdout);
|
---|
[279] | 477 |
|
---|
[439] | 478 | if ((buf = getchar()) == EOF) {
|
---|
| 479 | mrdb->dbg->xm = DBG_QUIT;
|
---|
| 480 | break;
|
---|
| 481 | }
|
---|
| 482 | c = buf;
|
---|
| 483 | while (buf != '\n' && (buf = getchar()) != EOF) ;
|
---|
[279] | 484 |
|
---|
[439] | 485 | if (c == 'y' || c == 'Y') {
|
---|
| 486 | mrdb->dbg->xm = DBG_QUIT;
|
---|
| 487 | break;
|
---|
| 488 | }
|
---|
| 489 | else if (c == 'n' || c == 'N') {
|
---|
| 490 | break;
|
---|
| 491 | }
|
---|
| 492 | else {
|
---|
| 493 | printf("Please answer y or n.\n");
|
---|
| 494 | }
|
---|
| 495 | }
|
---|
| 496 | break;
|
---|
| 497 | default:
|
---|
| 498 | mrdb->dbg->xm = DBG_QUIT;
|
---|
| 499 | break;
|
---|
| 500 | }
|
---|
[279] | 501 |
|
---|
[439] | 502 | if (mrdb->dbg->xm == DBG_QUIT) {
|
---|
| 503 | struct RClass *exc;
|
---|
| 504 | exc = mrb_define_class(mrb, "DebuggerExit", mrb->eException_class);
|
---|
| 505 | mrb_raise(mrb, exc, "Exit mrdb.");
|
---|
| 506 | }
|
---|
| 507 | return DBGST_PROMPT;
|
---|
[279] | 508 | }
|
---|