gdb/mi/mi-cmd-env.c

   1 /* MI Command Set - environment commands.
   2
   3    Copyright 2002, 2003 Free Software Foundation, Inc.
   4
   5    Contributed by Red Hat Inc.
   6
   7    This file is part of GDB.
   8
   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 2 of the License, or
  12    (at your option) any later version.
  13
  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.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program; if not, write to the Free Software
  21    Foundation, Inc., 59 Temple Place - Suite 330,
  22    Boston, MA 02111-1307, USA.  */
  23
  24 #include "defs.h"
  25 #include "inferior.h"
  26 #include "value.h"
  27 #include "mi-out.h"
  28 #include "mi-cmds.h"
  29 #include "mi-getopt.h"
  30 #include "symtab.h"
  31 #include "target.h"
  32 #include "environ.h"
  33 #include "command.h"
  34 #include "ui-out.h"
  35 #include "top.h"
  36
  37 #include "gdb_string.h"
  38 #include "gdb_stat.h"
  39
  40 static void env_cli_command (const char *cli, const char *args);
  41 static void env_mod_path (char *dirname, char **which_path);
  42 extern void _initialize_mi_cmd_env (void);
  43
  44 static const char path_var_name[] = "PATH";
  45 static char *orig_path = NULL;
  46
  47 /* The following is copied from mi-main.c so for m1 and below we can
  48    perform old behavior and use cli commands.  If ARGS is non-null,
  49    append it to the CMD.  */
  50 static void
  51 env_execute_cli_command (const char *cmd, const char *args)
  52 {
  53   if (cmd != 0)
  54     {
  55       struct cleanup *old_cleanups;
  56       char *run;
  57       if (args != NULL)
  58         xasprintf (&run, "%s %s", cmd, args);
  59       else
  60         run = xstrdup (cmd);
  61       old_cleanups = make_cleanup (xfree, run);
  62       execute_command ( /*ui */ run, 0 /*from_tty */ );
  63       do_cleanups (old_cleanups);
  64       return;
  65     }
  66 }
  67
  68
  69 /* Print working directory.  */
  70 enum mi_cmd_result
  71 mi_cmd_env_pwd (char *command, char **argv, int argc)
  72 {
  73   if (argc > 0)
  74     error ("mi_cmd_env_pwd: No arguments required");
  75
  76   if (mi_version (uiout) < 2)
  77     {
  78       env_execute_cli_command ("pwd", NULL);
  79       return MI_CMD_DONE;
  80     }
  81
  82   /* Otherwise the mi level is 2 or higher.  */
  83
  84   getcwd (gdb_dirbuf, sizeof (gdb_dirbuf));
  85   ui_out_field_string (uiout, "cwd", gdb_dirbuf);
  86
  87   return MI_CMD_DONE;
  88 }
  89
  90 /* Change working directory.  */
  91 enum mi_cmd_result
  92 mi_cmd_env_cd (char *command, char **argv, int argc)
  93 {
  94   if (argc == 0 || argc > 1)
  95     error ("mi_cmd_env_cd: Usage DIRECTORY");
  96
  97   env_execute_cli_command ("cd", argv[0]);
  98
  99   return MI_CMD_DONE;
 100 }
 101
 102 static void
 103 env_mod_path (char *dirname, char **which_path)
 104 {
 105   if (dirname == 0 || dirname[0] == '\0')
 106     return;
 107
 108   /* Call add_path with last arg 0 to indicate not to parse for
 109      separator characters.  */
 110   add_path (dirname, which_path, 0);
 111 }
 112
 113 /* Add one or more directories to start of executable search path.  */
 114 enum mi_cmd_result
 115 mi_cmd_env_path (char *command, char **argv, int argc)
 116 {
 117   char *exec_path;
 118   char *env;
 119   int reset = 0;
 120   int optind = 0;
 121   int i;
 122   char *optarg;
 123   enum opt
 124     {
 125       RESET_OPT
 126     };
 127   static struct mi_opt opts[] =
 128   {
 129     {"r", RESET_OPT, 0},
 130     0
 131   };
 132
 133   dont_repeat ();
 134
 135   if (mi_version (uiout) < 2)
 136     {
 137       for (i = argc - 1; i >= 0; --i)
 138         env_execute_cli_command ("path", argv[i]);
 139       return MI_CMD_DONE;
 140     }
 141
 142   /* Otherwise the mi level is 2 or higher.  */
 143   while (1)
 144     {
 145       int opt = mi_getopt ("mi_cmd_env_path", argc, argv, opts,
 146                            &optind, &optarg);
 147       if (opt < 0)
 148         break;
 149       switch ((enum opt) opt)
 150         {
 151         case RESET_OPT:
 152           reset = 1;
 153           break;
 154         }
 155     }
 156   argv += optind;
 157   argc -= optind;
 158
 159
 160   if (reset)
 161     {
 162       /* Reset implies resetting to original path first.  */
 163       exec_path = xstrdup (orig_path);
 164     }
 165   else
 166     {
 167       /* Otherwise, get current path to modify.  */
 168       env = get_in_environ (inferior_environ, path_var_name);
 169
 170       /* Can be null if path is not set.  */
 171       if (!env)
 172         env = "";
 173       exec_path = xstrdup (env);
 174     }
 175
 176   for (i = argc - 1; i >= 0; --i)
 177     env_mod_path (argv[i], &exec_path);
 178
 179   set_in_environ (inferior_environ, path_var_name, exec_path);
 180   xfree (exec_path);
 181   env = get_in_environ (inferior_environ, path_var_name);
 182   ui_out_field_string (uiout, "path", env);
 183
 184   return MI_CMD_DONE;
 185 }
 186
 187 /* Add zero or more directories to the front of the source path.  */
 188 enum mi_cmd_result
 189 mi_cmd_env_dir (char *command, char **argv, int argc)
 190 {
 191   int i;
 192   int optind = 0;
 193   int reset = 0;
 194   char *optarg;
 195   enum opt
 196     {
 197       RESET_OPT
 198     };
 199   static struct mi_opt opts[] =
 200   {
 201     {"r", RESET_OPT, 0},
 202     0
 203   };
 204
 205   dont_repeat ();
 206
 207   if (mi_version (uiout) < 2)
 208     {
 209       for (i = argc - 1; i >= 0; --i)
 210         env_execute_cli_command ("dir", argv[i]);
 211       return MI_CMD_DONE;
 212     }
 213
 214   /* Otherwise mi level is 2 or higher.  */
 215   while (1)
 216     {
 217       int opt = mi_getopt ("mi_cmd_env_dir", argc, argv, opts,
 218                            &optind, &optarg);
 219       if (opt < 0)
 220         break;
 221       switch ((enum opt) opt)
 222         {
 223         case RESET_OPT:
 224           reset = 1;
 225           break;
 226         }
 227     }
 228   argv += optind;
 229   argc -= optind;
 230
 231   if (reset)
 232     {
 233       /* Reset means setting to default path first.  */
 234       xfree (source_path);
 235       init_source_path ();
 236     }
 237
 238   for (i = argc - 1; i >= 0; --i)
 239     env_mod_path (argv[i], &source_path);
 240   init_last_source_visited ();
 241
 242   ui_out_field_string (uiout, "source-path", source_path);
 243   forget_cached_source_info ();
 244
 245   return MI_CMD_DONE;
 246 }
 247
 248 void
 249 _initialize_mi_cmd_env (void)
 250 {
 251   char *env;
 252
 253   /* We want original execution path to reset to, if desired later.  */
 254   env = get_in_environ (inferior_environ, path_var_name);
 255
 256   /* Can be null if path is not set.  */
 257   if (!env)
 258     env = "";
 259   orig_path = xstrdup (env);
 260 }