Merge branch 'obsd-master'
[tmux.git] / cmd-set-environment.c
blobcec1f3e3cbb322425af7ada73916ffc45f2dd923
1 /* $OpenBSD$ */
3 /*
4 * Copyright (c) 2009 Nicholas Marriott <nicholas.marriott@gmail.com>
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.
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.
19 #include <sys/types.h>
21 #include <stdlib.h>
22 #include <string.h>
24 #include "tmux.h"
27 * Set an environment variable.
30 static enum cmd_retval cmd_set_environment_exec(struct cmd *,
31 struct cmdq_item *);
33 const struct cmd_entry cmd_set_environment_entry = {
34 .name = "set-environment",
35 .alias = "setenv",
37 .args = { "Fhgrt:u", 1, 2, NULL },
38 .usage = "[-Fhgru] " CMD_TARGET_SESSION_USAGE " name [value]",
40 .target = { 't', CMD_FIND_SESSION, CMD_FIND_CANFAIL },
42 .flags = CMD_AFTERHOOK,
43 .exec = cmd_set_environment_exec
46 static enum cmd_retval
47 cmd_set_environment_exec(struct cmd *self, struct cmdq_item *item)
49 struct args *args = cmd_get_args(self);
50 struct cmd_find_state *target = cmdq_get_target(item);
51 struct environ *env;
52 const char *name = args_string(args, 0), *value;
53 const char *tflag;
54 char *expanded = NULL;
55 enum cmd_retval retval = CMD_RETURN_NORMAL;
57 if (*name == '\0') {
58 cmdq_error(item, "empty variable name");
59 return (CMD_RETURN_ERROR);
61 if (strchr(name, '=') != NULL) {
62 cmdq_error(item, "variable name contains =");
63 return (CMD_RETURN_ERROR);
66 if (args_count(args) < 2)
67 value = NULL;
68 else
69 value = args_string(args, 1);
70 if (value != NULL && args_has(args, 'F')) {
71 expanded = format_single_from_target(item, value);
72 value = expanded;
74 if (args_has(args, 'g'))
75 env = global_environ;
76 else {
77 if (target->s == NULL) {
78 tflag = args_get(args, 't');
79 if (tflag != NULL)
80 cmdq_error(item, "no such session: %s", tflag);
81 else
82 cmdq_error(item, "no current session");
83 retval = CMD_RETURN_ERROR;
84 goto out;
86 env = target->s->environ;
89 if (args_has(args, 'u')) {
90 if (value != NULL) {
91 cmdq_error(item, "can't specify a value with -u");
92 retval = CMD_RETURN_ERROR;
93 goto out;
95 environ_unset(env, name);
96 } else if (args_has(args, 'r')) {
97 if (value != NULL) {
98 cmdq_error(item, "can't specify a value with -r");
99 retval = CMD_RETURN_ERROR;
100 goto out;
102 environ_clear(env, name);
103 } else {
104 if (value == NULL) {
105 cmdq_error(item, "no value specified");
106 retval = CMD_RETURN_ERROR;
107 goto out;
110 if (args_has(args, 'h'))
111 environ_set(env, name, ENVIRON_HIDDEN, "%s", value);
112 else
113 environ_set(env, name, 0, "%s", value);
116 out:
117 free(expanded);
118 return (retval);