/* MI Command Set - MI parser.
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/* MI Command Set - MI parser.
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Copyright (C) 2000, Free Software Foundation, Inc.
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Copyright (C) 2000, Free Software Foundation, Inc.
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Contributed by Cygnus Solutions (a Red Hat company).
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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 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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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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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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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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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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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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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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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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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330,
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Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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Boston, MA 02111-1307, USA. */
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#include "defs.h"
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#include "defs.h"
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#include "mi-cmds.h"
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#include "mi-cmds.h"
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#include "mi-parse.h"
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#include "mi-parse.h"
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#include <ctype.h>
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#include <ctype.h>
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#include <string.h>
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#include <string.h>
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#undef XMALLOC
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#undef XMALLOC
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#define XMALLOC(TYPE) ((TYPE*) xmalloc (sizeof (TYPE)))
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#define XMALLOC(TYPE) ((TYPE*) xmalloc (sizeof (TYPE)))
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static void
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static void
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mi_parse_argv (char *args, struct mi_parse *parse)
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mi_parse_argv (char *args, struct mi_parse *parse)
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{
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{
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char *chp = args;
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char *chp = args;
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int argc = 0;
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int argc = 0;
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char **argv = xmalloc ((argc + 1) * sizeof (char *));
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char **argv = xmalloc ((argc + 1) * sizeof (char *));
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argv[argc] = NULL;
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argv[argc] = NULL;
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while (1)
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while (1)
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{
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{
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char *arg;
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char *arg;
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/* skip leading white space */
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/* skip leading white space */
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while (isspace (*chp))
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while (isspace (*chp))
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chp++;
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chp++;
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/* Three possibilities: EOF, quoted string, or other text. */
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/* Three possibilities: EOF, quoted string, or other text. */
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switch (*chp)
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switch (*chp)
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{
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{
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case '\0':
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case '\0':
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parse->argv = argv;
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parse->argv = argv;
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parse->argc = argc;
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parse->argc = argc;
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return;
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return;
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case '"':
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case '"':
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{
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{
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/* A quoted string. */
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/* A quoted string. */
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int len;
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int len;
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char *start = chp + 1;
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char *start = chp + 1;
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/* Determine the buffer size. */
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/* Determine the buffer size. */
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chp = start;
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chp = start;
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len = 0;
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len = 0;
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while (*chp != '\0' && *chp != '"')
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while (*chp != '\0' && *chp != '"')
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{
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{
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if (*chp == '\\')
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if (*chp == '\\')
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{
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{
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chp++;
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chp++;
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if (parse_escape (&chp) <= 0)
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if (parse_escape (&chp) <= 0)
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{
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{
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/* Do not allow split lines or "\000" */
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/* Do not allow split lines or "\000" */
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freeargv (argv);
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freeargv (argv);
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return;
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return;
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}
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}
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}
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}
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else
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else
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chp++;
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chp++;
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len++;
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len++;
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}
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}
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/* Insist on a closing quote. */
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/* Insist on a closing quote. */
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if (*chp != '"')
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if (*chp != '"')
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{
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{
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freeargv (argv);
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freeargv (argv);
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return;
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return;
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}
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}
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/* Insist on trailing white space. */
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/* Insist on trailing white space. */
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if (chp[1] != '\0' && !isspace (chp[1]))
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if (chp[1] != '\0' && !isspace (chp[1]))
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{
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{
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freeargv (argv);
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freeargv (argv);
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return;
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return;
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}
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}
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/* create the buffer. */
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/* create the buffer. */
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arg = xmalloc ((len + 1) * sizeof (char));
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arg = xmalloc ((len + 1) * sizeof (char));
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/* And copy the characters in. */
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/* And copy the characters in. */
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chp = start;
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chp = start;
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len = 0;
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len = 0;
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while (*chp != '\0' && *chp != '"')
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while (*chp != '\0' && *chp != '"')
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{
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{
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if (*chp == '\\')
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if (*chp == '\\')
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{
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{
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chp++;
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chp++;
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arg[len] = parse_escape (&chp);
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arg[len] = parse_escape (&chp);
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}
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}
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else
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else
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arg[len] = *chp++;
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arg[len] = *chp++;
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len++;
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len++;
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}
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}
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arg[len] = '\0';
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arg[len] = '\0';
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chp++; /* that closing quote. */
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chp++; /* that closing quote. */
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break;
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break;
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}
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}
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default:
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default:
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{
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{
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/* An unquoted string. Accumulate all non blank
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/* An unquoted string. Accumulate all non blank
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characters into a buffer. */
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characters into a buffer. */
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int len;
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int len;
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char *start = chp;
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char *start = chp;
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while (*chp != '\0' && !isspace (*chp))
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while (*chp != '\0' && !isspace (*chp))
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{
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{
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chp++;
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chp++;
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}
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}
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len = chp - start;
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len = chp - start;
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arg = xmalloc ((len + 1) * sizeof (char));
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arg = xmalloc ((len + 1) * sizeof (char));
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strncpy (arg, start, len);
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strncpy (arg, start, len);
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arg[len] = '\0';
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arg[len] = '\0';
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break;
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break;
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}
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}
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}
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}
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/* Append arg to argv. */
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/* Append arg to argv. */
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argv = xrealloc (argv, (argc + 2) * sizeof (char *));
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argv = xrealloc (argv, (argc + 2) * sizeof (char *));
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argv[argc++] = arg;
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argv[argc++] = arg;
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argv[argc] = NULL;
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argv[argc] = NULL;
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}
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}
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}
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}
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void
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void
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mi_parse_free (struct mi_parse *parse)
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mi_parse_free (struct mi_parse *parse)
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{
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{
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if (parse == NULL)
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if (parse == NULL)
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return;
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return;
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if (parse->command != NULL)
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if (parse->command != NULL)
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free (parse->command);
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free (parse->command);
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if (parse->token != NULL)
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if (parse->token != NULL)
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free (parse->token);
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free (parse->token);
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if (parse->args != NULL)
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if (parse->args != NULL)
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free (parse->args);
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free (parse->args);
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if (parse->argv != NULL)
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if (parse->argv != NULL)
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freeargv (parse->argv);
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freeargv (parse->argv);
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free (parse);
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free (parse);
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}
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}
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struct mi_parse *
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struct mi_parse *
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mi_parse (char *cmd)
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mi_parse (char *cmd)
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{
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{
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char *chp;
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char *chp;
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struct mi_parse *parse = XMALLOC (struct mi_parse);
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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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memset (parse, 0, sizeof (*parse));
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/* Before starting, skip leading white space. */
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/* Before starting, skip leading white space. */
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while (isspace (*cmd))
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while (isspace (*cmd))
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cmd++;
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cmd++;
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/* Find/skip any token and then extract it. */
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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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for (chp = cmd; *chp >= '0' && *chp <= '9'; chp++)
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;
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;
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parse->token = xmalloc ((chp - cmd + 1) * sizeof (char *));
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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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memcpy (parse->token, cmd, (chp - cmd));
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parse->token[chp - cmd] = '\0';
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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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/* This wasn't a real MI command. Return it as a CLI_COMMAND. */
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if (*chp != '-')
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if (*chp != '-')
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{
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{
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while (isspace (*chp))
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while (isspace (*chp))
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chp++;
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chp++;
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parse->command = xstrdup (chp);
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parse->command = xstrdup (chp);
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parse->op = CLI_COMMAND;
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parse->op = CLI_COMMAND;
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return parse;
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return parse;
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}
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}
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/* Extract the command. */
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/* Extract the command. */
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{
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{
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char *tmp = chp + 1; /* discard ``-'' */
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char *tmp = chp + 1; /* discard ``-'' */
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for (; *chp && !isspace (*chp); chp++)
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for (; *chp && !isspace (*chp); chp++)
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;
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;
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parse->command = xmalloc ((chp - tmp + 1) * sizeof (char *));
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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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memcpy (parse->command, tmp, chp - tmp);
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parse->command[chp - tmp] = '\0';
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parse->command[chp - tmp] = '\0';
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}
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}
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/* Find the command in the MI table. */
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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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parse->cmd = mi_lookup (parse->command);
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if (parse->cmd == NULL)
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if (parse->cmd == NULL)
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{
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{
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/* FIXME: This should be a function call. */
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/* FIXME: This should be a function call. */
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fprintf_unfiltered
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fprintf_unfiltered
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(raw_stdout,
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(raw_stdout,
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"%s^error,msg=\"Undefined MI command: %s\"\n",
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"%s^error,msg=\"Undefined MI command: %s\"\n",
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parse->token, parse->command);
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parse->token, parse->command);
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mi_parse_free (parse);
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mi_parse_free (parse);
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return NULL;
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return NULL;
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}
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}
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/* Skip white space following the command. */
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/* Skip white space following the command. */
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while (isspace (*chp))
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while (isspace (*chp))
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chp++;
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chp++;
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/* For new argv commands, attempt to return the parsed argument
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/* For new argv commands, attempt to return the parsed argument
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list. */
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list. */
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if (parse->cmd->argv_func != NULL)
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if (parse->cmd->argv_func != NULL)
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{
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{
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mi_parse_argv (chp, parse);
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mi_parse_argv (chp, parse);
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if (parse->argv == NULL)
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if (parse->argv == NULL)
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{
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{
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/* FIXME: This should be a function call. */
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/* FIXME: This should be a function call. */
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fprintf_unfiltered
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fprintf_unfiltered
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(raw_stdout,
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(raw_stdout,
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"%s^error,msg=\"Problem parsing arguments: %s %s\"\n",
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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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parse->token, parse->command, chp);
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mi_parse_free (parse);
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mi_parse_free (parse);
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return NULL;
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return NULL;
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}
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}
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}
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}
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/* FIXME: DELETE THIS */
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/* FIXME: DELETE THIS */
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/* For CLI and old ARGS commands, also return the remainder of the
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/* For CLI and old ARGS commands, also return the remainder of the
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command line as a single string. */
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command line as a single string. */
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if (parse->cmd->args_func != NULL
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if (parse->cmd->args_func != NULL
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|| parse->cmd->cli != NULL)
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|| parse->cmd->cli != NULL)
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{
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{
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parse->args = xstrdup (chp);
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parse->args = xstrdup (chp);
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}
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}
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/* Fully parsed. */
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/* Fully parsed. */
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parse->op = MI_COMMAND;
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parse->op = MI_COMMAND;
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return parse;
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return parse;
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}
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}
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void
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void
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_initialize_mi_parse ()
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_initialize_mi_parse ()
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{
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{
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}
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}
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/* Local variables: */
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/* Local variables: */
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/* change-log-default-name: "ChangeLog-mi" */
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/* change-log-default-name: "ChangeLog-mi" */
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/* End: */
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/* End: */
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