102040f0d0
* mi/mi-cmd-break.c: White space. * mi/mi-cmd-env.c: White space. * mi/mi-cmds.c: White space. * mi/mi-cmd-stack.c: White space. * mi/mi-cmd-var.c: White space. * mi/mi-console.c: White space. * mi/mi-getopt.c: White space. * mi/mi-interp.c: White space. * mi/mi-main.c: White space. * mi/mi-out.c: White space. * mi/mi-parse.c: White space.
372 lines
8 KiB
C
372 lines
8 KiB
C
/* MI Command Set - MI parser.
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Copyright (C) 2000, 2001, 2002, 2007, 2008, 2009, 2010
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Free Software Foundation, Inc.
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Contributed by Cygnus Solutions (a Red Hat company).
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include "mi-cmds.h"
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#include "mi-parse.h"
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#include "charset.h"
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#include <ctype.h>
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#include "gdb_string.h"
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/* Like parse_escape, but leave the results as a host char, not a
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target char. */
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static int
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mi_parse_escape (char **string_ptr)
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{
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int c = *(*string_ptr)++;
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switch (c)
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{
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case '\n':
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return -2;
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case 0:
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(*string_ptr)--;
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return 0;
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case '0':
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case '1':
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case '2':
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case '3':
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case '4':
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case '5':
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case '6':
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case '7':
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{
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int i = host_hex_value (c);
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int count = 0;
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while (++count < 3)
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{
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c = (**string_ptr);
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if (isdigit (c) && c != '8' && c != '9')
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{
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(*string_ptr)++;
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i *= 8;
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i += host_hex_value (c);
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}
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else
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{
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break;
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}
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}
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return i;
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}
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case 'a':
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c = '\a';
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break;
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case 'b':
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c = '\b';
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break;
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case 'f':
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c = '\f';
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break;
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case 'n':
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c = '\n';
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break;
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case 'r':
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c = '\r';
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break;
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case 't':
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c = '\t';
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break;
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case 'v':
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c = '\v';
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break;
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default:
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break;
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}
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return c;
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}
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static void
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mi_parse_argv (char *args, struct mi_parse *parse)
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{
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char *chp = args;
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int argc = 0;
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char **argv = xmalloc ((argc + 1) * sizeof (char *));
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argv[argc] = NULL;
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while (1)
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{
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char *arg;
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/* skip leading white space */
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while (isspace (*chp))
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chp++;
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/* Three possibilities: EOF, quoted string, or other text. */
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switch (*chp)
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{
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case '\0':
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parse->argv = argv;
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parse->argc = argc;
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return;
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case '"':
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{
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/* A quoted string. */
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int len;
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char *start = chp + 1;
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/* Determine the buffer size. */
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chp = start;
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len = 0;
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while (*chp != '\0' && *chp != '"')
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{
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if (*chp == '\\')
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{
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chp++;
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if (mi_parse_escape (&chp) <= 0)
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{
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/* Do not allow split lines or "\000" */
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freeargv (argv);
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return;
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}
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}
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else
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chp++;
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len++;
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}
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/* Insist on a closing quote. */
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if (*chp != '"')
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{
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freeargv (argv);
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return;
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}
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/* Insist on trailing white space. */
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if (chp[1] != '\0' && !isspace (chp[1]))
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{
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freeargv (argv);
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return;
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}
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/* create the buffer. */
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arg = xmalloc ((len + 1) * sizeof (char));
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/* And copy the characters in. */
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chp = start;
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len = 0;
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while (*chp != '\0' && *chp != '"')
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{
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if (*chp == '\\')
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{
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chp++;
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arg[len] = mi_parse_escape (&chp);
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}
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else
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arg[len] = *chp++;
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len++;
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}
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arg[len] = '\0';
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chp++; /* that closing quote. */
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break;
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}
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default:
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{
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/* An unquoted string. Accumulate all non blank
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characters into a buffer. */
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int len;
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char *start = chp;
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while (*chp != '\0' && !isspace (*chp))
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{
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chp++;
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}
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len = chp - start;
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arg = xmalloc ((len + 1) * sizeof (char));
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strncpy (arg, start, len);
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arg[len] = '\0';
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break;
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}
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}
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/* Append arg to argv. */
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argv = xrealloc (argv, (argc + 2) * sizeof (char *));
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argv[argc++] = arg;
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argv[argc] = NULL;
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}
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}
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void
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mi_parse_free (struct mi_parse *parse)
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{
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if (parse == NULL)
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return;
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if (parse->command != NULL)
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xfree (parse->command);
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if (parse->token != NULL)
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xfree (parse->token);
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if (parse->args != NULL)
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xfree (parse->args);
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if (parse->argv != NULL)
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freeargv (parse->argv);
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xfree (parse);
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}
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struct mi_parse *
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mi_parse (char *cmd)
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{
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char *chp;
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struct mi_parse *parse = XMALLOC (struct mi_parse);
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memset (parse, 0, sizeof (*parse));
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parse->all = 0;
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parse->thread_group = -1;
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parse->thread = -1;
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parse->frame = -1;
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/* Before starting, skip leading white space. */
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while (isspace (*cmd))
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cmd++;
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/* Find/skip any token and then extract it. */
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for (chp = cmd; *chp >= '0' && *chp <= '9'; chp++)
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;
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parse->token = xmalloc ((chp - cmd + 1) * sizeof (char *));
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memcpy (parse->token, cmd, (chp - cmd));
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parse->token[chp - cmd] = '\0';
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/* This wasn't a real MI command. Return it as a CLI_COMMAND. */
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if (*chp != '-')
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{
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while (isspace (*chp))
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chp++;
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parse->command = xstrdup (chp);
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parse->op = CLI_COMMAND;
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return parse;
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}
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/* Extract the command. */
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{
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char *tmp = chp + 1; /* discard ``-'' */
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for (; *chp && !isspace (*chp); chp++)
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;
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parse->command = xmalloc ((chp - tmp + 1) * sizeof (char *));
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memcpy (parse->command, tmp, chp - tmp);
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parse->command[chp - tmp] = '\0';
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}
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/* Find the command in the MI table. */
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parse->cmd = mi_lookup (parse->command);
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if (parse->cmd == NULL)
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{
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/* FIXME: This should be a function call. */
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fprintf_unfiltered
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(raw_stdout,
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"%s^error,msg=\"Undefined MI command: %s\"\n",
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parse->token, parse->command);
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mi_parse_free (parse);
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return NULL;
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}
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/* Skip white space following the command. */
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while (isspace (*chp))
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chp++;
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/* Parse the --thread and --frame options, if present. At present,
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some important commands, like '-break-*' are implemented by forwarding
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to the CLI layer directly. We want to parse --thread and --frame
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here, so as not to leave those option in the string that will be passed
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to CLI. */
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for (;;)
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{
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char *start = chp;
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size_t as = sizeof ("--all ") - 1;
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size_t tgs = sizeof ("--thread-group ") - 1;
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size_t ts = sizeof ("--thread ") - 1;
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size_t fs = sizeof ("--frame ") - 1;
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if (strncmp (chp, "--all ", as) == 0)
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{
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parse->all = 1;
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chp += as;
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}
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/* See if --all is the last token in the input. */
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if (strcmp (chp, "--all") == 0)
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{
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parse->all = 1;
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chp += strlen (chp);
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}
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if (strncmp (chp, "--thread-group ", tgs) == 0)
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{
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if (parse->thread_group != -1)
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error (_("Duplicate '--thread-group' option"));
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chp += tgs;
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if (*chp != 'i')
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error (_("Invalid thread group id"));
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chp += 1;
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parse->thread_group = strtol (chp, &chp, 10);
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}
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if (strncmp (chp, "--thread ", ts) == 0)
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{
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if (parse->thread != -1)
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error (_("Duplicate '--thread' option"));
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chp += ts;
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parse->thread = strtol (chp, &chp, 10);
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}
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else if (strncmp (chp, "--frame ", fs) == 0)
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{
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if (parse->frame != -1)
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error (_("Duplicate '--frame' option"));
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chp += fs;
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parse->frame = strtol (chp, &chp, 10);
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}
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else
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break;
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if (*chp != '\0' && !isspace (*chp))
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error (_("Invalid value for the '%s' option"),
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start[2] == 't' ? "--thread" : "--frame");
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while (isspace (*chp))
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chp++;
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}
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/* For new argv commands, attempt to return the parsed argument
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list. */
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if (parse->cmd->argv_func != NULL)
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{
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mi_parse_argv (chp, parse);
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if (parse->argv == NULL)
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{
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/* FIXME: This should be a function call. */
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fprintf_unfiltered
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(raw_stdout,
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"%s^error,msg=\"Problem parsing arguments: %s %s\"\n",
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parse->token, parse->command, chp);
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mi_parse_free (parse);
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return NULL;
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}
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}
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/* FIXME: DELETE THIS */
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/* For CLI commands, also return the remainder of the
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command line as a single string. */
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if (parse->cmd->cli.cmd != NULL)
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parse->args = xstrdup (chp);
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/* Fully parsed. */
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parse->op = MI_COMMAND;
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return parse;
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}
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