1 /* $OpenBSD: cmd-show-environment.c,v 1.7 2013/03/24 09:54:10 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 NULL, 39 cmd_show_environment_exec 40 }; 41 42 enum cmd_retval 43 cmd_show_environment_exec(struct cmd *self, struct cmd_q *cmdq) 44 { 45 struct args *args = self->args; 46 struct session *s; 47 struct environ *env; 48 struct environ_entry *envent; 49 50 if (args_has(self->args, 'g')) 51 env = &global_environ; 52 else { 53 if ((s = cmd_find_session(cmdq, args_get(args, 't'), 0)) == NULL) 54 return (CMD_RETURN_ERROR); 55 env = &s->environ; 56 } 57 58 if (args->argc != 0) { 59 envent = environ_find(env, args->argv[0]); 60 if (envent == NULL) { 61 cmdq_error(cmdq, "unknown variable: %s", args->argv[0]); 62 return (CMD_RETURN_ERROR); 63 } 64 if (envent->value != NULL) 65 cmdq_print(cmdq, "%s=%s", envent->name, envent->value); 66 else 67 cmdq_print(cmdq, "-%s", envent->name); 68 return (CMD_RETURN_NORMAL); 69 } 70 71 RB_FOREACH(envent, environ, env) { 72 if (envent->value != NULL) 73 cmdq_print(cmdq, "%s=%s", envent->name, envent->value); 74 else 75 cmdq_print(cmdq, "-%s", envent->name); 76 } 77 78 return (CMD_RETURN_NORMAL); 79 } 80