Commit | Line | Data |
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fb40c209 | 1 | /* MI Command Set - MI parser. |
349c5d5f | 2 | |
32d0add0 | 3 | Copyright (C) 2000-2015 Free Software Foundation, Inc. |
349c5d5f | 4 | |
ab91fdd5 | 5 | Contributed by Cygnus Solutions (a Red Hat company). |
fb40c209 AC |
6 | |
7 | This file is part of GDB. | |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
fb40c209 AC |
12 | (at your option) any later version. |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
fb40c209 AC |
21 | |
22 | #include "defs.h" | |
23 | #include "mi-cmds.h" | |
24 | #include "mi-parse.h" | |
f870a310 | 25 | #include "charset.h" |
fb40c209 AC |
26 | |
27 | #include <ctype.h> | |
529480d0 | 28 | #include "cli/cli-utils.h" |
403cb6b1 | 29 | #include "language.h" |
fb40c209 | 30 | |
44d100c3 TT |
31 | static const char mi_no_values[] = "--no-values"; |
32 | static const char mi_simple_values[] = "--simple-values"; | |
33 | static const char mi_all_values[] = "--all-values"; | |
87967e27 | 34 | |
f870a310 TT |
35 | /* Like parse_escape, but leave the results as a host char, not a |
36 | target char. */ | |
37 | ||
38 | static int | |
ee047554 | 39 | mi_parse_escape (const char **string_ptr) |
f870a310 TT |
40 | { |
41 | int c = *(*string_ptr)++; | |
102040f0 | 42 | |
f870a310 TT |
43 | switch (c) |
44 | { | |
45 | case '\n': | |
46 | return -2; | |
47 | case 0: | |
48 | (*string_ptr)--; | |
49 | return 0; | |
50 | ||
51 | case '0': | |
52 | case '1': | |
53 | case '2': | |
54 | case '3': | |
55 | case '4': | |
56 | case '5': | |
57 | case '6': | |
58 | case '7': | |
59 | { | |
60 | int i = host_hex_value (c); | |
61 | int count = 0; | |
102040f0 | 62 | |
f870a310 TT |
63 | while (++count < 3) |
64 | { | |
65 | c = (**string_ptr); | |
66 | if (isdigit (c) && c != '8' && c != '9') | |
67 | { | |
68 | (*string_ptr)++; | |
69 | i *= 8; | |
70 | i += host_hex_value (c); | |
71 | } | |
72 | else | |
73 | { | |
74 | break; | |
75 | } | |
76 | } | |
77 | return i; | |
78 | } | |
79 | ||
80 | case 'a': | |
81 | c = '\a'; | |
82 | break; | |
83 | case 'b': | |
84 | c = '\b'; | |
85 | break; | |
86 | case 'f': | |
87 | c = '\f'; | |
88 | break; | |
89 | case 'n': | |
90 | c = '\n'; | |
91 | break; | |
92 | case 'r': | |
93 | c = '\r'; | |
94 | break; | |
95 | case 't': | |
96 | c = '\t'; | |
97 | break; | |
98 | case 'v': | |
99 | c = '\v'; | |
100 | break; | |
101 | ||
102 | default: | |
103 | break; | |
104 | } | |
105 | ||
106 | return c; | |
107 | } | |
108 | ||
fb40c209 | 109 | static void |
ee047554 | 110 | mi_parse_argv (const char *args, struct mi_parse *parse) |
fb40c209 | 111 | { |
ee047554 | 112 | const char *chp = args; |
fb40c209 AC |
113 | int argc = 0; |
114 | char **argv = xmalloc ((argc + 1) * sizeof (char *)); | |
102040f0 | 115 | |
fb40c209 AC |
116 | argv[argc] = NULL; |
117 | while (1) | |
118 | { | |
119 | char *arg; | |
102040f0 | 120 | |
2b03b41d | 121 | /* Skip leading white space. */ |
ee047554 | 122 | chp = skip_spaces_const (chp); |
fb40c209 AC |
123 | /* Three possibilities: EOF, quoted string, or other text. */ |
124 | switch (*chp) | |
125 | { | |
126 | case '\0': | |
127 | parse->argv = argv; | |
128 | parse->argc = argc; | |
129 | return; | |
130 | case '"': | |
131 | { | |
2b03b41d | 132 | /* A quoted string. */ |
fb40c209 | 133 | int len; |
ee047554 | 134 | const char *start = chp + 1; |
102040f0 | 135 | |
2b03b41d | 136 | /* Determine the buffer size. */ |
fb40c209 AC |
137 | chp = start; |
138 | len = 0; | |
139 | while (*chp != '\0' && *chp != '"') | |
140 | { | |
141 | if (*chp == '\\') | |
142 | { | |
143 | chp++; | |
f870a310 | 144 | if (mi_parse_escape (&chp) <= 0) |
fb40c209 | 145 | { |
2b03b41d | 146 | /* Do not allow split lines or "\000". */ |
fb40c209 AC |
147 | freeargv (argv); |
148 | return; | |
149 | } | |
150 | } | |
151 | else | |
152 | chp++; | |
153 | len++; | |
154 | } | |
2b03b41d | 155 | /* Insist on a closing quote. */ |
fb40c209 AC |
156 | if (*chp != '"') |
157 | { | |
158 | freeargv (argv); | |
159 | return; | |
160 | } | |
2b03b41d | 161 | /* Insist on trailing white space. */ |
fb40c209 AC |
162 | if (chp[1] != '\0' && !isspace (chp[1])) |
163 | { | |
164 | freeargv (argv); | |
165 | return; | |
166 | } | |
2b03b41d | 167 | /* Create the buffer and copy characters in. */ |
fb40c209 | 168 | arg = xmalloc ((len + 1) * sizeof (char)); |
fb40c209 AC |
169 | chp = start; |
170 | len = 0; | |
171 | while (*chp != '\0' && *chp != '"') | |
172 | { | |
173 | if (*chp == '\\') | |
174 | { | |
175 | chp++; | |
f870a310 | 176 | arg[len] = mi_parse_escape (&chp); |
fb40c209 AC |
177 | } |
178 | else | |
179 | arg[len] = *chp++; | |
180 | len++; | |
181 | } | |
182 | arg[len] = '\0'; | |
2b03b41d | 183 | chp++; /* That closing quote. */ |
fb40c209 AC |
184 | break; |
185 | } | |
186 | default: | |
187 | { | |
2b03b41d SS |
188 | /* An unquoted string. Accumulate all non-blank |
189 | characters into a buffer. */ | |
fb40c209 | 190 | int len; |
ee047554 | 191 | const char *start = chp; |
102040f0 | 192 | |
fb40c209 AC |
193 | while (*chp != '\0' && !isspace (*chp)) |
194 | { | |
195 | chp++; | |
196 | } | |
197 | len = chp - start; | |
198 | arg = xmalloc ((len + 1) * sizeof (char)); | |
199 | strncpy (arg, start, len); | |
200 | arg[len] = '\0'; | |
201 | break; | |
202 | } | |
203 | } | |
2b03b41d | 204 | /* Append arg to argv. */ |
fb40c209 AC |
205 | argv = xrealloc (argv, (argc + 2) * sizeof (char *)); |
206 | argv[argc++] = arg; | |
207 | argv[argc] = NULL; | |
208 | } | |
209 | } | |
210 | ||
fb40c209 AC |
211 | void |
212 | mi_parse_free (struct mi_parse *parse) | |
213 | { | |
214 | if (parse == NULL) | |
215 | return; | |
216 | if (parse->command != NULL) | |
b8c9b27d | 217 | xfree (parse->command); |
fb40c209 | 218 | if (parse->token != NULL) |
b8c9b27d | 219 | xfree (parse->token); |
fb40c209 | 220 | if (parse->args != NULL) |
b8c9b27d | 221 | xfree (parse->args); |
fb40c209 AC |
222 | if (parse->argv != NULL) |
223 | freeargv (parse->argv); | |
b8c9b27d | 224 | xfree (parse); |
fb40c209 AC |
225 | } |
226 | ||
305aeedc TT |
227 | /* A cleanup that calls mi_parse_free. */ |
228 | ||
229 | static void | |
230 | mi_parse_cleanup (void *arg) | |
231 | { | |
232 | mi_parse_free (arg); | |
233 | } | |
fb40c209 AC |
234 | |
235 | struct mi_parse * | |
ee047554 | 236 | mi_parse (const char *cmd, char **token) |
fb40c209 | 237 | { |
ee047554 | 238 | const char *chp; |
70ba0933 | 239 | struct mi_parse *parse = XNEW (struct mi_parse); |
305aeedc | 240 | struct cleanup *cleanup; |
102040f0 | 241 | |
fb40c209 | 242 | memset (parse, 0, sizeof (*parse)); |
a79b8f6e VP |
243 | parse->all = 0; |
244 | parse->thread_group = -1; | |
1e92afda VP |
245 | parse->thread = -1; |
246 | parse->frame = -1; | |
403cb6b1 | 247 | parse->language = language_unknown; |
fb40c209 | 248 | |
305aeedc TT |
249 | cleanup = make_cleanup (mi_parse_cleanup, parse); |
250 | ||
2b03b41d | 251 | /* Before starting, skip leading white space. */ |
ee047554 | 252 | cmd = skip_spaces_const (cmd); |
fb40c209 | 253 | |
2b03b41d | 254 | /* Find/skip any token and then extract it. */ |
fb40c209 AC |
255 | for (chp = cmd; *chp >= '0' && *chp <= '9'; chp++) |
256 | ; | |
38a714bb | 257 | *token = xmalloc (chp - cmd + 1); |
305aeedc TT |
258 | memcpy (*token, cmd, (chp - cmd)); |
259 | (*token)[chp - cmd] = '\0'; | |
fb40c209 | 260 | |
2b03b41d | 261 | /* This wasn't a real MI command. Return it as a CLI_COMMAND. */ |
fb40c209 AC |
262 | if (*chp != '-') |
263 | { | |
ee047554 | 264 | chp = skip_spaces_const (chp); |
fb40c209 AC |
265 | parse->command = xstrdup (chp); |
266 | parse->op = CLI_COMMAND; | |
305aeedc TT |
267 | |
268 | discard_cleanups (cleanup); | |
269 | ||
fb40c209 AC |
270 | return parse; |
271 | } | |
272 | ||
2b03b41d | 273 | /* Extract the command. */ |
fb40c209 | 274 | { |
ee047554 | 275 | const char *tmp = chp + 1; /* discard ``-'' */ |
102040f0 | 276 | |
fb40c209 AC |
277 | for (; *chp && !isspace (*chp); chp++) |
278 | ; | |
38a714bb | 279 | parse->command = xmalloc (chp - tmp + 1); |
fb40c209 AC |
280 | memcpy (parse->command, tmp, chp - tmp); |
281 | parse->command[chp - tmp] = '\0'; | |
282 | } | |
283 | ||
2b03b41d | 284 | /* Find the command in the MI table. */ |
fb40c209 AC |
285 | parse->cmd = mi_lookup (parse->command); |
286 | if (parse->cmd == NULL) | |
2ea126fa JB |
287 | throw_error (UNDEFINED_COMMAND_ERROR, |
288 | _("Undefined MI command: %s"), parse->command); | |
fb40c209 | 289 | |
2b03b41d | 290 | /* Skip white space following the command. */ |
ee047554 | 291 | chp = skip_spaces_const (chp); |
fb40c209 | 292 | |
1e92afda | 293 | /* Parse the --thread and --frame options, if present. At present, |
2b03b41d SS |
294 | some important commands, like '-break-*' are implemented by |
295 | forwarding to the CLI layer directly. We want to parse --thread | |
296 | and --frame here, so as not to leave those option in the string | |
403cb6b1 JB |
297 | that will be passed to CLI. |
298 | ||
299 | Same for the --language option. */ | |
300 | ||
1e92afda VP |
301 | for (;;) |
302 | { | |
30a7f059 | 303 | const char *option; |
a79b8f6e VP |
304 | size_t as = sizeof ("--all ") - 1; |
305 | size_t tgs = sizeof ("--thread-group ") - 1; | |
1e92afda VP |
306 | size_t ts = sizeof ("--thread ") - 1; |
307 | size_t fs = sizeof ("--frame ") - 1; | |
403cb6b1 | 308 | size_t ls = sizeof ("--language ") - 1; |
102040f0 | 309 | |
a79b8f6e VP |
310 | if (strncmp (chp, "--all ", as) == 0) |
311 | { | |
312 | parse->all = 1; | |
313 | chp += as; | |
314 | } | |
315 | /* See if --all is the last token in the input. */ | |
316 | if (strcmp (chp, "--all") == 0) | |
317 | { | |
318 | parse->all = 1; | |
319 | chp += strlen (chp); | |
320 | } | |
321 | if (strncmp (chp, "--thread-group ", tgs) == 0) | |
322 | { | |
ee047554 KS |
323 | char *endp; |
324 | ||
30a7f059 | 325 | option = "--thread-group"; |
a79b8f6e VP |
326 | if (parse->thread_group != -1) |
327 | error (_("Duplicate '--thread-group' option")); | |
328 | chp += tgs; | |
329 | if (*chp != 'i') | |
330 | error (_("Invalid thread group id")); | |
331 | chp += 1; | |
ee047554 KS |
332 | parse->thread_group = strtol (chp, &endp, 10); |
333 | chp = endp; | |
a79b8f6e | 334 | } |
8e0e408a | 335 | else if (strncmp (chp, "--thread ", ts) == 0) |
1e92afda | 336 | { |
ee047554 KS |
337 | char *endp; |
338 | ||
30a7f059 | 339 | option = "--thread"; |
1e92afda | 340 | if (parse->thread != -1) |
a79b8f6e | 341 | error (_("Duplicate '--thread' option")); |
1e92afda | 342 | chp += ts; |
ee047554 KS |
343 | parse->thread = strtol (chp, &endp, 10); |
344 | chp = endp; | |
1e92afda VP |
345 | } |
346 | else if (strncmp (chp, "--frame ", fs) == 0) | |
347 | { | |
ee047554 KS |
348 | char *endp; |
349 | ||
30a7f059 | 350 | option = "--frame"; |
1e92afda | 351 | if (parse->frame != -1) |
a79b8f6e | 352 | error (_("Duplicate '--frame' option")); |
1e92afda | 353 | chp += fs; |
ee047554 KS |
354 | parse->frame = strtol (chp, &endp, 10); |
355 | chp = endp; | |
1e92afda | 356 | } |
403cb6b1 JB |
357 | else if (strncmp (chp, "--language ", ls) == 0) |
358 | { | |
359 | char *lang_name; | |
360 | struct cleanup *old_chain; | |
361 | ||
362 | option = "--language"; | |
363 | chp += ls; | |
364 | lang_name = extract_arg_const (&chp); | |
365 | old_chain = make_cleanup (xfree, lang_name); | |
366 | ||
367 | parse->language = language_enum (lang_name); | |
368 | if (parse->language == language_unknown | |
369 | || parse->language == language_auto) | |
370 | error (_("Invalid --language argument: %s"), lang_name); | |
371 | ||
372 | do_cleanups (old_chain); | |
373 | } | |
1e92afda VP |
374 | else |
375 | break; | |
376 | ||
377 | if (*chp != '\0' && !isspace (*chp)) | |
30a7f059 | 378 | error (_("Invalid value for the '%s' option"), option); |
ee047554 | 379 | chp = skip_spaces_const (chp); |
1e92afda VP |
380 | } |
381 | ||
fb40c209 | 382 | /* For new argv commands, attempt to return the parsed argument |
2b03b41d | 383 | list. */ |
fb40c209 AC |
384 | if (parse->cmd->argv_func != NULL) |
385 | { | |
386 | mi_parse_argv (chp, parse); | |
387 | if (parse->argv == NULL) | |
305aeedc | 388 | error (_("Problem parsing arguments: %s %s"), parse->command, chp); |
fb40c209 AC |
389 | } |
390 | ||
391 | /* FIXME: DELETE THIS */ | |
9e22b03a | 392 | /* For CLI commands, also return the remainder of the |
fb40c209 | 393 | command line as a single string. */ |
9e22b03a VP |
394 | if (parse->cmd->cli.cmd != NULL) |
395 | parse->args = xstrdup (chp); | |
fb40c209 | 396 | |
305aeedc TT |
397 | discard_cleanups (cleanup); |
398 | ||
2b03b41d | 399 | /* Fully parsed, flag as an MI command. */ |
fb40c209 AC |
400 | parse->op = MI_COMMAND; |
401 | return parse; | |
402 | } | |
87967e27 YQ |
403 | |
404 | enum print_values | |
405 | mi_parse_print_values (const char *name) | |
406 | { | |
407 | if (strcmp (name, "0") == 0 | |
408 | || strcmp (name, mi_no_values) == 0) | |
409 | return PRINT_NO_VALUES; | |
410 | else if (strcmp (name, "1") == 0 | |
411 | || strcmp (name, mi_all_values) == 0) | |
412 | return PRINT_ALL_VALUES; | |
413 | else if (strcmp (name, "2") == 0 | |
414 | || strcmp (name, mi_simple_values) == 0) | |
415 | return PRINT_SIMPLE_VALUES; | |
416 | else | |
417 | error (_("Unknown value for PRINT_VALUES: must be: \ | |
418 | 0 or \"%s\", 1 or \"%s\", 2 or \"%s\""), | |
419 | mi_no_values, mi_all_values, mi_simple_values); | |
420 | } |