1 /* MI Command Set - MI parser.
3 Copyright (C) 2000-2013 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 "gdb_string.h"
30 /* Like parse_escape, but leave the results as a host char, not a
34 mi_parse_escape (char **string_ptr
)
36 int c
= *(*string_ptr
)++;
55 int i
= host_hex_value (c
);
61 if (isdigit (c
) && c
!= '8' && c
!= '9')
65 i
+= host_hex_value (c
);
105 mi_parse_argv (char *args
, struct mi_parse
*parse
)
109 char **argv
= xmalloc ((argc
+ 1) * sizeof (char *));
116 /* Skip leading white space. */
117 while (isspace (*chp
))
119 /* Three possibilities: EOF, quoted string, or other text. */
128 /* A quoted string. */
130 char *start
= chp
+ 1;
132 /* Determine the buffer size. */
135 while (*chp
!= '\0' && *chp
!= '"')
140 if (mi_parse_escape (&chp
) <= 0)
142 /* Do not allow split lines or "\000". */
151 /* Insist on a closing quote. */
157 /* Insist on trailing white space. */
158 if (chp
[1] != '\0' && !isspace (chp
[1]))
163 /* Create the buffer and copy characters in. */
164 arg
= xmalloc ((len
+ 1) * sizeof (char));
167 while (*chp
!= '\0' && *chp
!= '"')
172 arg
[len
] = mi_parse_escape (&chp
);
179 chp
++; /* That closing quote. */
184 /* An unquoted string. Accumulate all non-blank
185 characters into a buffer. */
189 while (*chp
!= '\0' && !isspace (*chp
))
194 arg
= xmalloc ((len
+ 1) * sizeof (char));
195 strncpy (arg
, start
, len
);
200 /* Append arg to argv. */
201 argv
= xrealloc (argv
, (argc
+ 2) * sizeof (char *));
208 mi_parse_free (struct mi_parse
*parse
)
212 if (parse
->command
!= NULL
)
213 xfree (parse
->command
);
214 if (parse
->token
!= NULL
)
215 xfree (parse
->token
);
216 if (parse
->args
!= NULL
)
218 if (parse
->argv
!= NULL
)
219 freeargv (parse
->argv
);
223 /* A cleanup that calls mi_parse_free. */
226 mi_parse_cleanup (void *arg
)
232 mi_parse (char *cmd
, char **token
)
235 struct mi_parse
*parse
= XMALLOC (struct mi_parse
);
236 struct cleanup
*cleanup
;
238 memset (parse
, 0, sizeof (*parse
));
240 parse
->thread_group
= -1;
244 cleanup
= make_cleanup (mi_parse_cleanup
, parse
);
246 /* Before starting, skip leading white space. */
247 while (isspace (*cmd
))
250 /* Find/skip any token and then extract it. */
251 for (chp
= cmd
; *chp
>= '0' && *chp
<= '9'; chp
++)
253 *token
= xmalloc (chp
- cmd
+ 1);
254 memcpy (*token
, cmd
, (chp
- cmd
));
255 (*token
)[chp
- cmd
] = '\0';
257 /* This wasn't a real MI command. Return it as a CLI_COMMAND. */
260 while (isspace (*chp
))
262 parse
->command
= xstrdup (chp
);
263 parse
->op
= CLI_COMMAND
;
265 discard_cleanups (cleanup
);
270 /* Extract the command. */
272 char *tmp
= chp
+ 1; /* discard ``-'' */
274 for (; *chp
&& !isspace (*chp
); chp
++)
276 parse
->command
= xmalloc (chp
- tmp
+ 1);
277 memcpy (parse
->command
, tmp
, chp
- tmp
);
278 parse
->command
[chp
- tmp
] = '\0';
281 /* Find the command in the MI table. */
282 parse
->cmd
= mi_lookup (parse
->command
);
283 if (parse
->cmd
== NULL
)
284 error (_("Undefined MI command: %s"), parse
->command
);
286 /* Skip white space following the command. */
287 while (isspace (*chp
))
290 /* Parse the --thread and --frame options, if present. At present,
291 some important commands, like '-break-*' are implemented by
292 forwarding to the CLI layer directly. We want to parse --thread
293 and --frame here, so as not to leave those option in the string
294 that will be passed to CLI. */
298 size_t as
= sizeof ("--all ") - 1;
299 size_t tgs
= sizeof ("--thread-group ") - 1;
300 size_t ts
= sizeof ("--thread ") - 1;
301 size_t fs
= sizeof ("--frame ") - 1;
303 if (strncmp (chp
, "--all ", as
) == 0)
308 /* See if --all is the last token in the input. */
309 if (strcmp (chp
, "--all") == 0)
314 if (strncmp (chp
, "--thread-group ", tgs
) == 0)
316 option
= "--thread-group";
317 if (parse
->thread_group
!= -1)
318 error (_("Duplicate '--thread-group' option"));
321 error (_("Invalid thread group id"));
323 parse
->thread_group
= strtol (chp
, &chp
, 10);
325 else if (strncmp (chp
, "--thread ", ts
) == 0)
328 if (parse
->thread
!= -1)
329 error (_("Duplicate '--thread' option"));
331 parse
->thread
= strtol (chp
, &chp
, 10);
333 else if (strncmp (chp
, "--frame ", fs
) == 0)
336 if (parse
->frame
!= -1)
337 error (_("Duplicate '--frame' option"));
339 parse
->frame
= strtol (chp
, &chp
, 10);
344 if (*chp
!= '\0' && !isspace (*chp
))
345 error (_("Invalid value for the '%s' option"), option
);
346 while (isspace (*chp
))
350 /* For new argv commands, attempt to return the parsed argument
352 if (parse
->cmd
->argv_func
!= NULL
)
354 mi_parse_argv (chp
, parse
);
355 if (parse
->argv
== NULL
)
356 error (_("Problem parsing arguments: %s %s"), parse
->command
, chp
);
359 /* FIXME: DELETE THIS */
360 /* For CLI commands, also return the remainder of the
361 command line as a single string. */
362 if (parse
->cmd
->cli
.cmd
!= NULL
)
363 parse
->args
= xstrdup (chp
);
365 discard_cleanups (cleanup
);
367 /* Fully parsed, flag as an MI command. */
368 parse
->op
= MI_COMMAND
;
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