1 /* $OpenBSD: cmd-show-environment.c,v 1.8 2013/10/10 12:00:23 nicm Exp $ */ 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 enum cmd_retval cmd_show_environment_exec(struct cmd *, struct cmd_q *); 31 32 const struct cmd_entry cmd_show_environment_entry = { 33 "show-environment", "showenv", 34 "gt:", 0, 1, 35 "[-g] " CMD_TARGET_SESSION_USAGE " [name]", 36 0, 37 NULL, 38 cmd_show_environment_exec 39 }; 40 41 enum cmd_retval 42 cmd_show_environment_exec(struct cmd *self, struct cmd_q *cmdq) 43 { 44 struct args *args = self->args; 45 struct session *s; 46 struct environ *env; 47 struct environ_entry *envent; 48 49 if (args_has(self->args, 'g')) 50 env = &global_environ; 51 else { 52 if ((s = cmd_find_session(cmdq, args_get(args, 't'), 0)) == NULL) 53 return (CMD_RETURN_ERROR); 54 env = &s->environ; 55 } 56 57 if (args->argc != 0) { 58 envent = environ_find(env, args->argv[0]); 59 if (envent == NULL) { 60 cmdq_error(cmdq, "unknown variable: %s", args->argv[0]); 61 return (CMD_RETURN_ERROR); 62 } 63 if (envent->value != NULL) 64 cmdq_print(cmdq, "%s=%s", envent->name, envent->value); 65 else 66 cmdq_print(cmdq, "-%s", envent->name); 67 return (CMD_RETURN_NORMAL); 68 } 69 70 RB_FOREACH(envent, environ, env) { 71 if (envent->value != NULL) 72 cmdq_print(cmdq, "%s=%s", envent->name, envent->value); 73 else 74 cmdq_print(cmdq, "-%s", envent->name); 75 } 76 77 return (CMD_RETURN_NORMAL); 78 } 79