1 /* MI Command Set - MI parser.
3 Copyright (C) 2000, 2001, 2002, 2007, 2008, 2009, 2010, 2011
4 Free Software Foundation, Inc.
6 Contributed by Cygnus Solutions (a Red Hat company).
8 This file is part of GDB.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program. If not, see <http://www.gnu.org/licenses/>. */
29 #include "gdb_string.h"
31 /* Like parse_escape, but leave the results as a host char, not a
35 mi_parse_escape (char **string_ptr
)
37 int c
= *(*string_ptr
)++;
56 int i
= host_hex_value (c
);
62 if (isdigit (c
) && c
!= '8' && c
!= '9')
66 i
+= host_hex_value (c
);
106 mi_parse_argv (char *args
, struct mi_parse
*parse
)
110 char **argv
= xmalloc ((argc
+ 1) * sizeof (char *));
117 /* skip leading white space */
118 while (isspace (*chp
))
120 /* Three possibilities: EOF, quoted string, or other text. */
129 /* A quoted string. */
131 char *start
= chp
+ 1;
133 /* Determine the buffer size. */
136 while (*chp
!= '\0' && *chp
!= '"')
141 if (mi_parse_escape (&chp
) <= 0)
143 /* Do not allow split lines or "\000" */
152 /* Insist on a closing quote. */
158 /* Insist on trailing white space. */
159 if (chp
[1] != '\0' && !isspace (chp
[1]))
164 /* create the buffer. */
165 arg
= xmalloc ((len
+ 1) * sizeof (char));
166 /* And copy the characters in. */
169 while (*chp
!= '\0' && *chp
!= '"')
174 arg
[len
] = mi_parse_escape (&chp
);
181 chp
++; /* that closing quote. */
186 /* An unquoted string. Accumulate all non blank
187 characters into a buffer. */
191 while (*chp
!= '\0' && !isspace (*chp
))
196 arg
= xmalloc ((len
+ 1) * sizeof (char));
197 strncpy (arg
, start
, len
);
202 /* Append arg to argv. */
203 argv
= xrealloc (argv
, (argc
+ 2) * sizeof (char *));
211 mi_parse_free (struct mi_parse
*parse
)
215 if (parse
->command
!= NULL
)
216 xfree (parse
->command
);
217 if (parse
->token
!= NULL
)
218 xfree (parse
->token
);
219 if (parse
->args
!= NULL
)
221 if (parse
->argv
!= NULL
)
222 freeargv (parse
->argv
);
226 /* A cleanup that calls mi_parse_free. */
229 mi_parse_cleanup (void *arg
)
235 mi_parse (char *cmd
, char **token
)
238 struct mi_parse
*parse
= XMALLOC (struct mi_parse
);
239 struct cleanup
*cleanup
;
241 memset (parse
, 0, sizeof (*parse
));
243 parse
->thread_group
= -1;
247 cleanup
= make_cleanup (mi_parse_cleanup
, parse
);
249 /* Before starting, skip leading white space. */
250 while (isspace (*cmd
))
253 /* Find/skip any token and then extract it. */
254 for (chp
= cmd
; *chp
>= '0' && *chp
<= '9'; chp
++)
256 *token
= xmalloc ((chp
- cmd
+ 1) * sizeof (char *));
257 memcpy (*token
, cmd
, (chp
- cmd
));
258 (*token
)[chp
- cmd
] = '\0';
260 /* This wasn't a real MI command. Return it as a CLI_COMMAND. */
263 while (isspace (*chp
))
265 parse
->command
= xstrdup (chp
);
266 parse
->op
= CLI_COMMAND
;
268 discard_cleanups (cleanup
);
273 /* Extract the command. */
275 char *tmp
= chp
+ 1; /* discard ``-'' */
277 for (; *chp
&& !isspace (*chp
); chp
++)
279 parse
->command
= xmalloc ((chp
- tmp
+ 1) * sizeof (char *));
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 error (_("Undefined MI command: %s"), parse
->command
);
289 /* Skip white space following the command. */
290 while (isspace (*chp
))
293 /* Parse the --thread and --frame options, if present. At present,
294 some important commands, like '-break-*' are implemented by forwarding
295 to the CLI layer directly. We want to parse --thread and --frame
296 here, so as not to leave those option in the string that will be passed
301 size_t as
= sizeof ("--all ") - 1;
302 size_t tgs
= sizeof ("--thread-group ") - 1;
303 size_t ts
= sizeof ("--thread ") - 1;
304 size_t fs
= sizeof ("--frame ") - 1;
306 if (strncmp (chp
, "--all ", as
) == 0)
311 /* See if --all is the last token in the input. */
312 if (strcmp (chp
, "--all") == 0)
317 if (strncmp (chp
, "--thread-group ", tgs
) == 0)
319 option
= "--thread-group";
320 if (parse
->thread_group
!= -1)
321 error (_("Duplicate '--thread-group' option"));
324 error (_("Invalid thread group id"));
326 parse
->thread_group
= strtol (chp
, &chp
, 10);
328 else if (strncmp (chp
, "--thread ", ts
) == 0)
331 if (parse
->thread
!= -1)
332 error (_("Duplicate '--thread' option"));
334 parse
->thread
= strtol (chp
, &chp
, 10);
336 else if (strncmp (chp
, "--frame ", fs
) == 0)
339 if (parse
->frame
!= -1)
340 error (_("Duplicate '--frame' option"));
342 parse
->frame
= strtol (chp
, &chp
, 10);
347 if (*chp
!= '\0' && !isspace (*chp
))
348 error (_("Invalid value for the '%s' option"), option
);
349 while (isspace (*chp
))
353 /* For new argv commands, attempt to return the parsed argument
355 if (parse
->cmd
->argv_func
!= NULL
)
357 mi_parse_argv (chp
, parse
);
358 if (parse
->argv
== NULL
)
359 error (_("Problem parsing arguments: %s %s"), parse
->command
, chp
);
362 /* FIXME: DELETE THIS */
363 /* For CLI commands, also return the remainder of the
364 command line as a single string. */
365 if (parse
->cmd
->cli
.cmd
!= NULL
)
366 parse
->args
= xstrdup (chp
);
368 discard_cleanups (cleanup
);
371 parse
->op
= MI_COMMAND
;