Annotation of src/usr.bin/tmux/cmd-set-environment.c, Revision 1.13
1.13 ! nicm 1: /* $OpenBSD: cmd-set-environment.c,v 1.12 2015/11/24 23:46:15 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 = {
33: "set-environment", "setenv",
1.4 nicm 34: "grt:u", 1, 2,
1.2 nicm 35: "[-gru] " CMD_TARGET_SESSION_USAGE " name [value]",
1.13 ! nicm 36: CMD_SESSION_T,
1.4 nicm 37: cmd_set_environment_exec
1.1 nicm 38: };
39:
1.6 nicm 40: enum cmd_retval
1.8 nicm 41: cmd_set_environment_exec(struct cmd *self, struct cmd_q *cmdq)
1.1 nicm 42: {
1.4 nicm 43: struct args *args = self->args;
44: struct environ *env;
45: const char *name, *value;
1.1 nicm 46:
1.4 nicm 47: name = args->argv[0];
48: if (*name == '\0') {
1.8 nicm 49: cmdq_error(cmdq, "empty variable name");
1.6 nicm 50: return (CMD_RETURN_ERROR);
1.1 nicm 51: }
1.4 nicm 52: if (strchr(name, '=') != NULL) {
1.8 nicm 53: cmdq_error(cmdq, "variable name contains =");
1.6 nicm 54: return (CMD_RETURN_ERROR);
1.1 nicm 55: }
56:
1.7 okan 57: if (args->argc < 2)
1.4 nicm 58: value = NULL;
59: else
60: value = args->argv[1];
61:
62: if (args_has(self->args, 'g'))
1.11 nicm 63: env = global_environ;
1.13 ! nicm 64: else
! 65: env = cmdq->state.tflag.s->environ;
1.1 nicm 66:
1.4 nicm 67: if (args_has(self->args, 'u')) {
68: if (value != NULL) {
1.8 nicm 69: cmdq_error(cmdq, "can't specify a value with -u");
1.6 nicm 70: return (CMD_RETURN_ERROR);
1.1 nicm 71: }
1.4 nicm 72: environ_unset(env, name);
73: } else if (args_has(self->args, 'r')) {
74: if (value != NULL) {
1.8 nicm 75: cmdq_error(cmdq, "can't specify a value with -r");
1.6 nicm 76: return (CMD_RETURN_ERROR);
1.1 nicm 77: }
1.12 nicm 78: environ_clear(env, name);
1.1 nicm 79: } else {
1.4 nicm 80: if (value == NULL) {
1.8 nicm 81: cmdq_error(cmdq, "no value specified");
1.6 nicm 82: return (CMD_RETURN_ERROR);
1.1 nicm 83: }
1.12 nicm 84: environ_set(env, name, "%s", value);
1.1 nicm 85: }
86:
1.6 nicm 87: return (CMD_RETURN_NORMAL);
1.1 nicm 88: }