mirror of https://github.com/tmux/tmux.git
144 lines
3.8 KiB
C
144 lines
3.8 KiB
C
/* $OpenBSD$ */
|
|
|
|
/*
|
|
* Copyright (c) 2009 Nicholas Marriott <nicholas.marriott@gmail.com>
|
|
*
|
|
* 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"
|
|
|
|
/*
|
|
* Show environment.
|
|
*/
|
|
|
|
static enum cmd_retval cmd_show_environment_exec(struct cmd *,
|
|
struct cmdq_item *);
|
|
|
|
static char *cmd_show_environment_escape(struct environ_entry *);
|
|
static void cmd_show_environment_print(struct cmd *, struct cmdq_item *,
|
|
struct environ_entry *);
|
|
|
|
const struct cmd_entry cmd_show_environment_entry = {
|
|
.name = "show-environment",
|
|
.alias = "showenv",
|
|
|
|
.args = { "hgst:", 0, 1, NULL },
|
|
.usage = "[-hgs] " CMD_TARGET_SESSION_USAGE " [name]",
|
|
|
|
.target = { 't', CMD_FIND_SESSION, CMD_FIND_CANFAIL },
|
|
|
|
.flags = CMD_AFTERHOOK,
|
|
.exec = cmd_show_environment_exec
|
|
};
|
|
|
|
static char *
|
|
cmd_show_environment_escape(struct environ_entry *envent)
|
|
{
|
|
const char *value = envent->value;
|
|
char c, *out, *ret;
|
|
|
|
out = ret = xmalloc(strlen(value) * 2 + 1); /* at most twice the size */
|
|
while ((c = *value++) != '\0') {
|
|
/* POSIX interprets $ ` " and \ in double quotes. */
|
|
if (c == '$' || c == '`' || c == '"' || c == '\\')
|
|
*out++ = '\\';
|
|
*out++ = c;
|
|
}
|
|
*out = '\0';
|
|
|
|
return (ret);
|
|
}
|
|
|
|
static void
|
|
cmd_show_environment_print(struct cmd *self, struct cmdq_item *item,
|
|
struct environ_entry *envent)
|
|
{
|
|
struct args *args = cmd_get_args(self);
|
|
char *escaped;
|
|
|
|
if (!args_has(args, 'h') && (envent->flags & ENVIRON_HIDDEN))
|
|
return;
|
|
if (args_has(args, 'h') && (~envent->flags & ENVIRON_HIDDEN))
|
|
return;
|
|
|
|
if (!args_has(args, 's')) {
|
|
if (envent->value != NULL)
|
|
cmdq_print(item, "%s=%s", envent->name, envent->value);
|
|
else
|
|
cmdq_print(item, "-%s", envent->name);
|
|
return;
|
|
}
|
|
|
|
if (envent->value != NULL) {
|
|
escaped = cmd_show_environment_escape(envent);
|
|
cmdq_print(item, "%s=\"%s\"; export %s;", envent->name, escaped,
|
|
envent->name);
|
|
free(escaped);
|
|
} else
|
|
cmdq_print(item, "unset %s;", envent->name);
|
|
}
|
|
|
|
static enum cmd_retval
|
|
cmd_show_environment_exec(struct cmd *self, struct cmdq_item *item)
|
|
{
|
|
struct args *args = cmd_get_args(self);
|
|
struct cmd_find_state *target = cmdq_get_target(item);
|
|
struct environ *env;
|
|
struct environ_entry *envent;
|
|
const char *tflag, *name = args_string(args, 0);
|
|
|
|
if ((tflag = args_get(args, 't')) != NULL) {
|
|
if (target->s == NULL) {
|
|
cmdq_error(item, "no such session: %s", tflag);
|
|
return (CMD_RETURN_ERROR);
|
|
}
|
|
}
|
|
|
|
if (args_has(args, 'g'))
|
|
env = global_environ;
|
|
else {
|
|
if (target->s == NULL) {
|
|
tflag = args_get(args, 't');
|
|
if (tflag != NULL)
|
|
cmdq_error(item, "no such session: %s", tflag);
|
|
else
|
|
cmdq_error(item, "no current session");
|
|
return (CMD_RETURN_ERROR);
|
|
}
|
|
env = target->s->environ;
|
|
}
|
|
|
|
if (name != NULL) {
|
|
envent = environ_find(env, name);
|
|
if (envent == NULL) {
|
|
cmdq_error(item, "unknown variable: %s", name);
|
|
return (CMD_RETURN_ERROR);
|
|
}
|
|
cmd_show_environment_print(self, item, envent);
|
|
return (CMD_RETURN_NORMAL);
|
|
}
|
|
|
|
envent = environ_first(env);
|
|
while (envent != NULL) {
|
|
cmd_show_environment_print(self, item, envent);
|
|
envent = environ_next(envent);
|
|
}
|
|
return (CMD_RETURN_NORMAL);
|
|
}
|