1 /* MI Command Set - MI parser.
3 Copyright (C) 2000-2015 Free Software Foundation, Inc.
5 Contributed by Cygnus Solutions (a Red Hat company).
7 This file is part of GDB.
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
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
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.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
28 #include "cli/cli-utils.h"
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";
35 /* Like parse_escape, but leave the results as a host char, not a
39 mi_parse_escape (const char **string_ptr
)
41 int c
= *(*string_ptr
)++;
60 int i
= host_hex_value (c
);
66 if (isdigit (c
) && c
!= '8' && c
!= '9')
70 i
+= host_hex_value (c
);
110 mi_parse_argv (const char *args
, struct mi_parse
*parse
)
112 const char *chp
= args
;
114 char **argv
= XNEWVEC (char *, argc
+ 1);
121 /* Skip leading white space. */
122 chp
= skip_spaces_const (chp
);
123 /* Three possibilities: EOF, quoted string, or other text. */
132 /* A quoted string. */
134 const char *start
= chp
+ 1;
136 /* Determine the buffer size. */
139 while (*chp
!= '\0' && *chp
!= '"')
144 if (mi_parse_escape (&chp
) <= 0)
146 /* Do not allow split lines or "\000". */
155 /* Insist on a closing quote. */
161 /* Insist on trailing white space. */
162 if (chp
[1] != '\0' && !isspace (chp
[1]))
167 /* Create the buffer and copy characters in. */
168 arg
= xmalloc ((len
+ 1) * sizeof (char));
171 while (*chp
!= '\0' && *chp
!= '"')
176 arg
[len
] = mi_parse_escape (&chp
);
183 chp
++; /* That closing quote. */
188 /* An unquoted string. Accumulate all non-blank
189 characters into a buffer. */
191 const char *start
= chp
;
193 while (*chp
!= '\0' && !isspace (*chp
))
198 arg
= xmalloc ((len
+ 1) * sizeof (char));
199 strncpy (arg
, start
, len
);
204 /* Append arg to argv. */
205 argv
= xrealloc (argv
, (argc
+ 2) * sizeof (char *));
212 mi_parse_free (struct mi_parse
*parse
)
216 if (parse
->command
!= NULL
)
217 xfree (parse
->command
);
218 if (parse
->token
!= NULL
)
219 xfree (parse
->token
);
220 if (parse
->args
!= NULL
)
222 if (parse
->argv
!= NULL
)
223 freeargv (parse
->argv
);
227 /* A cleanup that calls mi_parse_free. */
230 mi_parse_cleanup (void *arg
)
236 mi_parse (const char *cmd
, char **token
)
239 struct mi_parse
*parse
= XNEW (struct mi_parse
);
240 struct cleanup
*cleanup
;
242 memset (parse
, 0, sizeof (*parse
));
244 parse
->thread_group
= -1;
247 parse
->language
= language_unknown
;
249 cleanup
= make_cleanup (mi_parse_cleanup
, parse
);
251 /* Before starting, skip leading white space. */
252 cmd
= skip_spaces_const (cmd
);
254 /* Find/skip any token and then extract it. */
255 for (chp
= cmd
; *chp
>= '0' && *chp
<= '9'; chp
++)
257 *token
= xmalloc (chp
- cmd
+ 1);
258 memcpy (*token
, cmd
, (chp
- cmd
));
259 (*token
)[chp
- cmd
] = '\0';
261 /* This wasn't a real MI command. Return it as a CLI_COMMAND. */
264 chp
= skip_spaces_const (chp
);
265 parse
->command
= xstrdup (chp
);
266 parse
->op
= CLI_COMMAND
;
268 discard_cleanups (cleanup
);
273 /* Extract the command. */
275 const char *tmp
= chp
+ 1; /* discard ``-'' */
277 for (; *chp
&& !isspace (*chp
); chp
++)
279 parse
->command
= xmalloc (chp
- tmp
+ 1);
280 memcpy (parse
->command
, tmp
, chp
- tmp
);
281 parse
->command
[chp
- tmp
] = '\0';
284 /* Find the command in the MI table. */
285 parse
->cmd
= mi_lookup (parse
->command
);
286 if (parse
->cmd
== NULL
)
287 throw_error (UNDEFINED_COMMAND_ERROR
,
288 _("Undefined MI command: %s"), parse
->command
);
290 /* Skip white space following the command. */
291 chp
= skip_spaces_const (chp
);
293 /* Parse the --thread and --frame options, if present. At present,
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
297 that will be passed to CLI.
299 Same for the --language option. */
304 size_t as
= sizeof ("--all ") - 1;
305 size_t tgs
= sizeof ("--thread-group ") - 1;
306 size_t ts
= sizeof ("--thread ") - 1;
307 size_t fs
= sizeof ("--frame ") - 1;
308 size_t ls
= sizeof ("--language ") - 1;
310 if (strncmp (chp
, "--all ", as
) == 0)
315 /* See if --all is the last token in the input. */
316 if (strcmp (chp
, "--all") == 0)
321 if (strncmp (chp
, "--thread-group ", tgs
) == 0)
325 option
= "--thread-group";
326 if (parse
->thread_group
!= -1)
327 error (_("Duplicate '--thread-group' option"));
330 error (_("Invalid thread group id"));
332 parse
->thread_group
= strtol (chp
, &endp
, 10);
335 else if (strncmp (chp
, "--thread ", ts
) == 0)
340 if (parse
->thread
!= -1)
341 error (_("Duplicate '--thread' option"));
343 parse
->thread
= strtol (chp
, &endp
, 10);
346 else if (strncmp (chp
, "--frame ", fs
) == 0)
351 if (parse
->frame
!= -1)
352 error (_("Duplicate '--frame' option"));
354 parse
->frame
= strtol (chp
, &endp
, 10);
357 else if (strncmp (chp
, "--language ", ls
) == 0)
360 struct cleanup
*old_chain
;
362 option
= "--language";
364 lang_name
= extract_arg_const (&chp
);
365 old_chain
= make_cleanup (xfree
, lang_name
);
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
);
372 do_cleanups (old_chain
);
377 if (*chp
!= '\0' && !isspace (*chp
))
378 error (_("Invalid value for the '%s' option"), option
);
379 chp
= skip_spaces_const (chp
);
382 /* For new argv commands, attempt to return the parsed argument
384 if (parse
->cmd
->argv_func
!= NULL
)
386 mi_parse_argv (chp
, parse
);
387 if (parse
->argv
== NULL
)
388 error (_("Problem parsing arguments: %s %s"), parse
->command
, chp
);
391 /* FIXME: DELETE THIS */
392 /* For CLI commands, also return the remainder of the
393 command line as a single string. */
394 if (parse
->cmd
->cli
.cmd
!= NULL
)
395 parse
->args
= xstrdup (chp
);
397 discard_cleanups (cleanup
);
399 /* Fully parsed, flag as an MI command. */
400 parse
->op
= MI_COMMAND
;
405 mi_parse_print_values (const char *name
)
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
;
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
);
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