Annotation of src/usr.bin/tmux/cmd-set-environment.c, Revision 1.14
1.14 ! nicm 1: /* $OpenBSD: cmd-set-environment.c,v 1.13 2015/12/13 14:32:38 nicm Exp $ */
1.1 nicm 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: * Set an environment variable.
28: */
29:
1.8 nicm 30: enum cmd_retval cmd_set_environment_exec(struct cmd *, struct cmd_q *);
1.1 nicm 31:
32: const struct cmd_entry cmd_set_environment_entry = {
1.14 ! nicm 33: .name = "set-environment",
! 34: .alias = "setenv",
! 35:
! 36: .args = { "grt:u", 1, 2 },
! 37: .usage = "[-gru] " CMD_TARGET_SESSION_USAGE " name [value]",
! 38:
! 39: .flags = CMD_SESSION_T,
! 40: .exec = cmd_set_environment_exec
1.1 nicm 41: };
42:
1.6 nicm 43: enum cmd_retval
1.8 nicm 44: cmd_set_environment_exec(struct cmd *self, struct cmd_q *cmdq)
1.1 nicm 45: {
1.4 nicm 46: struct args *args = self->args;
47: struct environ *env;
48: const char *name, *value;
1.1 nicm 49:
1.4 nicm 50: name = args->argv[0];
51: if (*name == '\0') {
1.8 nicm 52: cmdq_error(cmdq, "empty variable name");
1.6 nicm 53: return (CMD_RETURN_ERROR);
1.1 nicm 54: }
1.4 nicm 55: if (strchr(name, '=') != NULL) {
1.8 nicm 56: cmdq_error(cmdq, "variable name contains =");
1.6 nicm 57: return (CMD_RETURN_ERROR);
1.1 nicm 58: }
59:
1.7 okan 60: if (args->argc < 2)
1.4 nicm 61: value = NULL;
62: else
63: value = args->argv[1];
64:
65: if (args_has(self->args, 'g'))
1.11 nicm 66: env = global_environ;
1.13 nicm 67: else
68: env = cmdq->state.tflag.s->environ;
1.1 nicm 69:
1.4 nicm 70: if (args_has(self->args, 'u')) {
71: if (value != NULL) {
1.8 nicm 72: cmdq_error(cmdq, "can't specify a value with -u");
1.6 nicm 73: return (CMD_RETURN_ERROR);
1.1 nicm 74: }
1.4 nicm 75: environ_unset(env, name);
76: } else if (args_has(self->args, 'r')) {
77: if (value != NULL) {
1.8 nicm 78: cmdq_error(cmdq, "can't specify a value with -r");
1.6 nicm 79: return (CMD_RETURN_ERROR);
1.1 nicm 80: }
1.12 nicm 81: environ_clear(env, name);
1.1 nicm 82: } else {
1.4 nicm 83: if (value == NULL) {
1.8 nicm 84: cmdq_error(cmdq, "no value specified");
1.6 nicm 85: return (CMD_RETURN_ERROR);
1.1 nicm 86: }
1.12 nicm 87: environ_set(env, name, "%s", value);
1.1 nicm 88: }
89:
1.6 nicm 90: return (CMD_RETURN_NORMAL);
1.1 nicm 91: }