Annotation of src/usr.bin/tmux/cmd-set-environment.c, Revision 1.7
1.7 ! okan 1: /* $OpenBSD: cmd-set-environment.c,v 1.6 2012/07/11 07:10:15 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:
1.6 nicm 30: enum cmd_retval cmd_set_environment_exec(struct cmd *, struct cmd_ctx *);
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]",
1.4 nicm 36: 0,
1.1 nicm 37: NULL,
1.4 nicm 38: NULL,
39: cmd_set_environment_exec
1.1 nicm 40: };
41:
1.6 nicm 42: enum cmd_retval
1.1 nicm 43: cmd_set_environment_exec(struct cmd *self, struct cmd_ctx *ctx)
44: {
1.4 nicm 45: struct args *args = self->args;
46: struct session *s;
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') {
1.1 nicm 52: ctx->error(ctx, "empty variable name");
1.6 nicm 53: return (CMD_RETURN_ERROR);
1.1 nicm 54: }
1.4 nicm 55: if (strchr(name, '=') != NULL) {
1.1 nicm 56: ctx->error(ctx, "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'))
1.1 nicm 66: env = &global_environ;
67: else {
1.5 nicm 68: if ((s = cmd_find_session(ctx, args_get(args, 't'), 0)) == NULL)
1.6 nicm 69: return (CMD_RETURN_ERROR);
1.1 nicm 70: env = &s->environ;
71: }
72:
1.4 nicm 73: if (args_has(self->args, 'u')) {
74: if (value != NULL) {
1.1 nicm 75: ctx->error(ctx, "can't specify a value with -u");
1.6 nicm 76: return (CMD_RETURN_ERROR);
1.1 nicm 77: }
1.4 nicm 78: environ_unset(env, name);
79: } else if (args_has(self->args, 'r')) {
80: if (value != NULL) {
1.1 nicm 81: ctx->error(ctx, "can't specify a value with -r");
1.6 nicm 82: return (CMD_RETURN_ERROR);
1.1 nicm 83: }
1.4 nicm 84: environ_set(env, name, NULL);
1.1 nicm 85: } else {
1.4 nicm 86: if (value == NULL) {
1.1 nicm 87: ctx->error(ctx, "no value specified");
1.6 nicm 88: return (CMD_RETURN_ERROR);
1.1 nicm 89: }
1.4 nicm 90: environ_set(env, name, value);
1.1 nicm 91: }
92:
1.6 nicm 93: return (CMD_RETURN_NORMAL);
1.1 nicm 94: }