tmux/cmd-set-environment.c
nicm 4a4daf1303 Instead of every command resolving the target (-t or -s) itself, prepare
the state (client, session, winlink, pane) for it it before entering the
command. Each command provides some flags that tell the prepare step
what it is expecting.

This is a requirement for having hooks on commands (for example, if you
hook "select-window -t1:2", the hook command should to operate on window
1:2 not whatever it thinks is the current window), and should allow some
other target improvements.

The old cmd_find_* functions remain for the moment but that layer will
be dropped later.

Joint work with Thomas Adam.
2015-12-13 14:32:38 +00:00

89 lines
2.3 KiB
C

/* $OpenBSD$ */
/*
* 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.
*/
enum cmd_retval cmd_set_environment_exec(struct cmd *, struct cmd_q *);
const struct cmd_entry cmd_set_environment_entry = {
"set-environment", "setenv",
"grt:u", 1, 2,
"[-gru] " CMD_TARGET_SESSION_USAGE " name [value]",
CMD_SESSION_T,
cmd_set_environment_exec
};
enum cmd_retval
cmd_set_environment_exec(struct cmd *self, struct cmd_q *cmdq)
{
struct args *args = self->args;
struct environ *env;
const char *name, *value;
name = args->argv[0];
if (*name == '\0') {
cmdq_error(cmdq, "empty variable name");
return (CMD_RETURN_ERROR);
}
if (strchr(name, '=') != NULL) {
cmdq_error(cmdq, "variable name contains =");
return (CMD_RETURN_ERROR);
}
if (args->argc < 2)
value = NULL;
else
value = args->argv[1];
if (args_has(self->args, 'g'))
env = global_environ;
else
env = cmdq->state.tflag.s->environ;
if (args_has(self->args, 'u')) {
if (value != NULL) {
cmdq_error(cmdq, "can't specify a value with -u");
return (CMD_RETURN_ERROR);
}
environ_unset(env, name);
} else if (args_has(self->args, 'r')) {
if (value != NULL) {
cmdq_error(cmdq, "can't specify a value with -r");
return (CMD_RETURN_ERROR);
}
environ_clear(env, name);
} else {
if (value == NULL) {
cmdq_error(cmdq, "no value specified");
return (CMD_RETURN_ERROR);
}
environ_set(env, name, "%s", value);
}
return (CMD_RETURN_NORMAL);
}