Return to cmd-set-environment.c CVS log

Up to [ELWIX - Embedded LightWeight unIX -] / embedaddon / tmux

Annotation of embedaddon/tmux/cmd-set-environment.c, revision 1.1

1.1     ! misho       1: /* $OpenBSD$ */
        !             2: 
        !             3: /*
        !             4:  * Copyright (c) 2009 Nicholas Marriott <nicholas.marriott@gmail.com>
        !             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: 
        !            30: static enum cmd_retval cmd_set_environment_exec(struct cmd *,
        !            31:                            struct cmdq_item *);
        !            32: 
        !            33: const struct cmd_entry cmd_set_environment_entry = {
        !            34:        .name = "set-environment",
        !            35:        .alias = "setenv",
        !            36: 
        !            37:        .args = { "grt:u", 1, 2 },
        !            38:        .usage = "[-gru] " CMD_TARGET_SESSION_USAGE " name [value]",
        !            39: 
        !            40:        .tflag = CMD_SESSION_CANFAIL,
        !            41: 
        !            42:        .flags = CMD_AFTERHOOK,
        !            43:        .exec = cmd_set_environment_exec
        !            44: };
        !            45: 
        !            46: static enum cmd_retval
        !            47: cmd_set_environment_exec(struct cmd *self, struct cmdq_item *item)
        !            48: {
        !            49:        struct args     *args = self->args;
        !            50:        struct environ  *env;
        !            51:        const char      *name, *value, *target;
        !            52: 
        !            53:        name = args->argv[0];
        !            54:        if (*name == '\0') {
        !            55:                cmdq_error(item, "empty variable name");
        !            56:                return (CMD_RETURN_ERROR);
        !            57:        }
        !            58:        if (strchr(name, '=') != NULL) {
        !            59:                cmdq_error(item, "variable name contains =");
        !            60:                return (CMD_RETURN_ERROR);
        !            61:        }
        !            62: 
        !            63:        if (args->argc < 2)
        !            64:                value = NULL;
        !            65:        else
        !            66:                value = args->argv[1];
        !            67: 
        !            68:        if (args_has(self->args, 'g'))
        !            69:                env = global_environ;
        !            70:        else {
        !            71:                if (item->state.tflag.s == NULL) {
        !            72:                        target = args_get(args, 't');
        !            73:                        if (target != NULL)
        !            74:                                cmdq_error(item, "no such session: %s", target);
        !            75:                        else
        !            76:                                cmdq_error(item, "no current session");
        !            77:                        return (CMD_RETURN_ERROR);
        !            78:                }
        !            79:                env = item->state.tflag.s->environ;
        !            80:        }
        !            81: 
        !            82:        if (args_has(self->args, 'u')) {
        !            83:                if (value != NULL) {
        !            84:                        cmdq_error(item, "can't specify a value with -u");
        !            85:                        return (CMD_RETURN_ERROR);
        !            86:                }
        !            87:                environ_unset(env, name);
        !            88:        } else if (args_has(self->args, 'r')) {
        !            89:                if (value != NULL) {
        !            90:                        cmdq_error(item, "can't specify a value with -r");
        !            91:                        return (CMD_RETURN_ERROR);
        !            92:                }
        !            93:                environ_clear(env, name);
        !            94:        } else {
        !            95:                if (value == NULL) {
        !            96:                        cmdq_error(item, "no value specified");
        !            97:                        return (CMD_RETURN_ERROR);
        !            98:                }
        !            99:                environ_set(env, name, "%s", value);
        !           100:        }
        !           101: 
        !           102:        return (CMD_RETURN_NORMAL);
        !           103: }