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/* $OpenBSD: cmd-set-environment.c,v 1.2 2009/08/11 12:53:37 nicm Exp $ */
/*
* Copyright (c) 2009 Nicholas Marriott <nicm@users.sourceforge.net>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <stdlib.h>
#include <string.h>
#include "tmux.h"
/*
* Set an environment variable.
*/
int cmd_set_environment_exec(struct cmd *, struct cmd_ctx *);
const struct cmd_entry cmd_set_environment_entry = {
"set-environment", "setenv",
"[-gru] " CMD_TARGET_SESSION_USAGE " name [value]",
CMD_ARG12, CMD_CHFLAG('g')|CMD_CHFLAG('r')|CMD_CHFLAG('u'),
NULL,
cmd_target_parse,
cmd_set_environment_exec,
cmd_target_free,
cmd_target_print
};
int
cmd_set_environment_exec(struct cmd *self, struct cmd_ctx *ctx)
{
struct cmd_target_data *data = self->data;
struct session *s;
struct environ *env;
if (*data->arg == '\0') {
ctx->error(ctx, "empty variable name");
return (-1);
}
if (strchr(data->arg, '=') != NULL) {
ctx->error(ctx, "variable name contains =");
return (-1);
}
if (data->chflags & CMD_CHFLAG('g'))
env = &global_environ;
else {
if ((s = cmd_find_session(ctx, data->target)) == NULL)
return (-1);
env = &s->environ;
}
if (data->chflags & CMD_CHFLAG('u')) {
if (data->arg2 != NULL) {
ctx->error(ctx, "can't specify a value with -u");
return (-1);
}
environ_unset(env, data->arg);
} else if (data->chflags & CMD_CHFLAG('r')) {
if (data->arg2 != NULL) {
ctx->error(ctx, "can't specify a value with -r");
return (-1);
}
environ_set(env, data->arg, NULL);
} else {
if (data->arg2 == NULL) {
ctx->error(ctx, "no value specified");
return (-1);
}
environ_set(env, data->arg, data->arg2);
}
return (0);
}
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