gdb/mi/mi-cmd-env.c

   1 /* MI Command Set - environment commands.
   2
   3    Copyright (C) 2002, 2003, 2004, 2007, 2008 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 3 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, see <http://www.gnu.org/licenses/>.  */
  21
  22 #include "defs.h"
  23 #include "inferior.h"
  24 #include "value.h"
  25 #include "mi-out.h"
  26 #include "mi-cmds.h"
  27 #include "mi-getopt.h"
  28 #include "symtab.h"
  29 #include "target.h"
  30 #include "environ.h"
  31 #include "command.h"
  32 #include "ui-out.h"
  33 #include "top.h"
  34
  35 #include "gdb_string.h"
  36 #include "gdb_stat.h"
  37
  38 static void env_mod_path (char *dirname, char **which_path);
  39 extern void _initialize_mi_cmd_env (void);
  40
  41 static const char path_var_name[] = "PATH";
  42 static char *orig_path = NULL;
  43
  44 /* The following is copied from mi-main.c so for m1 and below we can
  45    perform old behavior and use cli commands.  If ARGS is non-null,
  46    append it to the CMD.  */
  47 static void
  48 env_execute_cli_command (const char *cmd, const char *args)
  49 {
  50   if (cmd != 0)
  51     {
  52       struct cleanup *old_cleanups;
  53       char *run;
  54       if (args != NULL)
  55         run = xstrprintf ("%s %s", cmd, args);
  56       else
  57         run = xstrdup (cmd);
  58       old_cleanups = make_cleanup (xfree, run);
  59       execute_command ( /*ui */ run, 0 /*from_tty */ );
  60       do_cleanups (old_cleanups);
  61       return;
  62     }
  63 }
  64
  65
  66 /* Print working directory.  */
  67 enum mi_cmd_result
  68 mi_cmd_env_pwd (char *command, char **argv, int argc)
  69 {
  70   if (argc > 0)
  71     error (_("mi_cmd_env_pwd: No arguments required"));
  72
  73   if (mi_version (uiout) < 2)
  74     {
  75       env_execute_cli_command ("pwd", NULL);
  76       return MI_CMD_DONE;
  77     }
  78
  79   /* Otherwise the mi level is 2 or higher.  */
  80
  81   getcwd (gdb_dirbuf, sizeof (gdb_dirbuf));
  82   ui_out_field_string (uiout, "cwd", gdb_dirbuf);
  83
  84   return MI_CMD_DONE;
  85 }
  86
  87 /* Change working directory.  */
  88 enum mi_cmd_result
  89 mi_cmd_env_cd (char *command, char **argv, int argc)
  90 {
  91   if (argc == 0 || argc > 1)
  92     error (_("mi_cmd_env_cd: Usage DIRECTORY"));
  93
  94   env_execute_cli_command ("cd", argv[0]);
  95
  96   return MI_CMD_DONE;
  97 }
  98
  99 static void
 100 env_mod_path (char *dirname, char **which_path)
 101 {
 102   if (dirname == 0 || dirname[0] == '\0')
 103     return;
 104
 105   /* Call add_path with last arg 0 to indicate not to parse for
 106      separator characters.  */
 107   add_path (dirname, which_path, 0);
 108 }
 109
 110 /* Add one or more directories to start of executable search path.  */
 111 enum mi_cmd_result
 112 mi_cmd_env_path (char *command, char **argv, int argc)
 113 {
 114   char *exec_path;
 115   char *env;
 116   int reset = 0;
 117   int optind = 0;
 118   int i;
 119   char *optarg;
 120   enum opt
 121     {
 122       RESET_OPT
 123     };
 124   static struct mi_opt opts[] =
 125   {
 126     {"r", RESET_OPT, 0},
 127     { 0, 0, 0 }
 128   };
 129
 130   dont_repeat ();
 131
 132   if (mi_version (uiout) < 2)
 133     {
 134       for (i = argc - 1; i >= 0; --i)
 135         env_execute_cli_command ("path", argv[i]);
 136       return MI_CMD_DONE;
 137     }
 138
 139   /* Otherwise the mi level is 2 or higher.  */
 140   while (1)
 141     {
 142       int opt = mi_getopt ("mi_cmd_env_path", argc, argv, opts,
 143                            &optind, &optarg);
 144       if (opt < 0)
 145         break;
 146       switch ((enum opt) opt)
 147         {
 148         case RESET_OPT:
 149           reset = 1;
 150           break;
 151         }
 152     }
 153   argv += optind;
 154   argc -= optind;
 155
 156
 157   if (reset)
 158     {
 159       /* Reset implies resetting to original path first.  */
 160       exec_path = xstrdup (orig_path);
 161     }
 162   else
 163     {
 164       /* Otherwise, get current path to modify.  */
 165       env = get_in_environ (inferior_environ, path_var_name);
 166
 167       /* Can be null if path is not set.  */
 168       if (!env)
 169         env = "";
 170       exec_path = xstrdup (env);
 171     }
 172
 173   for (i = argc - 1; i >= 0; --i)
 174     env_mod_path (argv[i], &exec_path);
 175
 176   set_in_environ (inferior_environ, path_var_name, exec_path);
 177   xfree (exec_path);
 178   env = get_in_environ (inferior_environ, path_var_name);
 179   ui_out_field_string (uiout, "path", env);
 180
 181   return MI_CMD_DONE;
 182 }
 183
 184 /* Add zero or more directories to the front of the source path.  */
 185 enum mi_cmd_result
 186 mi_cmd_env_dir (char *command, char **argv, int argc)
 187 {
 188   int i;
 189   int optind = 0;
 190   int reset = 0;
 191   char *optarg;
 192   enum opt
 193     {
 194       RESET_OPT
 195     };
 196   static struct mi_opt opts[] =
 197   {
 198     {"r", RESET_OPT, 0},
 199     { 0, 0, 0 }
 200   };
 201
 202   dont_repeat ();
 203
 204   if (mi_version (uiout) < 2)
 205     {
 206       for (i = argc - 1; i >= 0; --i)
 207         env_execute_cli_command ("dir", argv[i]);
 208       return MI_CMD_DONE;
 209     }
 210
 211   /* Otherwise mi level is 2 or higher.  */
 212   while (1)
 213     {
 214       int opt = mi_getopt ("mi_cmd_env_dir", argc, argv, opts,
 215                            &optind, &optarg);
 216       if (opt < 0)
 217         break;
 218       switch ((enum opt) opt)
 219         {
 220         case RESET_OPT:
 221           reset = 1;
 222           break;
 223         }
 224     }
 225   argv += optind;
 226   argc -= optind;
 227
 228   if (reset)
 229     {
 230       /* Reset means setting to default path first.  */
 231       xfree (source_path);
 232       init_source_path ();
 233     }
 234
 235   for (i = argc - 1; i >= 0; --i)
 236     env_mod_path (argv[i], &source_path);
 237   init_last_source_visited ();
 238
 239   ui_out_field_string (uiout, "source-path", source_path);
 240   forget_cached_source_info ();
 241
 242   return MI_CMD_DONE;
 243 }
 244
 245 /* Set the inferior terminal device name.  */
 246 enum mi_cmd_result
 247 mi_cmd_inferior_tty_set (char *command, char **argv, int argc)
 248 {
 249   set_inferior_io_terminal (argv[0]);
 250
 251   return MI_CMD_DONE;
 252 }
 253
 254 /* Print the inferior terminal device name  */
 255 enum mi_cmd_result
 256 mi_cmd_inferior_tty_show (char *command, char **argv, int argc)
 257 {
 258   const char *inferior_io_terminal = get_inferior_io_terminal ();
 259
 260   if ( !mi_valid_noargs ("mi_cmd_inferior_tty_show", argc, argv))
 261     error (_("mi_cmd_inferior_tty_show: Usage: No args"));
 262
 263   if (inferior_io_terminal)
 264     ui_out_field_string (uiout, "inferior_tty_terminal", inferior_io_terminal);
 265
 266   return MI_CMD_DONE;
 267 }
 268
 269 void
 270 _initialize_mi_cmd_env (void)
 271 {
 272   char *env;
 273
 274   /* We want original execution path to reset to, if desired later.  */
 275   env = get_in_environ (inferior_environ, path_var_name);
 276
 277   /* Can be null if path is not set.  */
 278   if (!env)
 279     env = "";
 280   orig_path = xstrdup (env);
 281 }