cmd-show-environment.c

   1 /* $OpenBSD$ */
   2
   3 /*
   4  * Copyright (c) 2009 Nicholas Marriott <nicm@users.sourceforge.net>
   5  *
   6  * Permission to use, copy, modify, and distribute this software for any
   7  * purpose with or without fee is hereby granted, provided that the above
   8  * copyright notice and this permission notice appear in all copies.
   9  *
  10  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  13  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  14  * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
  15  * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
  16  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  17  */
  18
  19 #include <sys/types.h>
  20
  21 #include <stdlib.h>
  22 #include <string.h>
  23
  24 #include "tmux.h"
  25
  26 /*
  27  * Show environment.
  28  */
  29
  30 int     cmd_show_environment_exec(struct cmd *, struct cmd_ctx *);
  31
  32 const struct cmd_entry cmd_show_environment_entry = {
  33         "show-environment", "showenv",
  34         "[-g] " CMD_TARGET_SESSION_USAGE,
  35         0, "g",
  36         cmd_target_init,
  37         cmd_target_parse,
  38         cmd_show_environment_exec,
  39         cmd_target_free,
  40         cmd_target_print
  41 };
  42
  43 int
  44 cmd_show_environment_exec(struct cmd *self, struct cmd_ctx *ctx)
  45 {
  46         struct cmd_target_data          *data = self->data;
  47         struct session                  *s;
  48         struct environ                  *env;
  49         struct environ_entry            *envent;
  50
  51         if (cmd_check_flag(data->chflags, 'g'))
  52                 env = &global_environ;
  53         else {
  54                 if ((s = cmd_find_session(ctx, data->target)) == NULL)
  55                         return (-1);
  56                 env = &s->environ;
  57         }
  58
  59         RB_FOREACH(envent, environ, env) {
  60                 if (envent->value != NULL)
  61                         ctx->print(ctx, "%s=%s", envent->name, envent->value);
  62                 else
  63                         ctx->print(ctx, "-%s", envent->name);
  64         }
  65
  66         return (0);
  67 }