mirror of
https://github.com/tmate-io/tmate.git
synced 2024-11-27 18:43:11 +01:00
146 lines
3.2 KiB
C
146 lines
3.2 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"
|
|
|
|
/*
|
|
* Environment - manipulate a set of environment variables.
|
|
*/
|
|
|
|
RB_GENERATE(environ, environ_entry, entry, environ_cmp);
|
|
|
|
int
|
|
environ_cmp(struct environ_entry *envent1, struct environ_entry *envent2)
|
|
{
|
|
return (strcmp(envent1->name, envent2->name));
|
|
}
|
|
|
|
void
|
|
environ_init(struct environ *env)
|
|
{
|
|
RB_INIT(env);
|
|
}
|
|
|
|
void
|
|
environ_free(struct environ *env)
|
|
{
|
|
struct environ_entry *envent;
|
|
|
|
while (!RB_EMPTY(env)) {
|
|
envent = RB_ROOT(env);
|
|
RB_REMOVE(environ, env, envent);
|
|
xfree(envent->name);
|
|
if (envent->value != NULL)
|
|
xfree(envent->value);
|
|
xfree(envent);
|
|
}
|
|
}
|
|
|
|
void
|
|
environ_copy(struct environ *srcenv, struct environ *dstenv)
|
|
{
|
|
struct environ_entry *envent;
|
|
|
|
RB_FOREACH(envent, environ, srcenv)
|
|
environ_set(dstenv, envent->name, envent->value);
|
|
}
|
|
|
|
struct environ_entry *
|
|
environ_find(struct environ *env, const char *name)
|
|
{
|
|
struct environ_entry envent;
|
|
|
|
envent.name = (char *) name;
|
|
return (RB_FIND(environ, env, &envent));
|
|
}
|
|
|
|
void
|
|
environ_set(struct environ *env, const char *name, const char *value)
|
|
{
|
|
struct environ_entry *envent;
|
|
|
|
if ((envent = environ_find(env, name)) != NULL) {
|
|
if (envent->value != NULL)
|
|
xfree(envent->value);
|
|
if (value != NULL)
|
|
envent->value = xstrdup(value);
|
|
else
|
|
envent->value = NULL;
|
|
} else {
|
|
envent = xmalloc(sizeof *envent);
|
|
envent->name = xstrdup(name);
|
|
if (value != NULL)
|
|
envent->value = xstrdup(value);
|
|
else
|
|
envent->value = NULL;
|
|
RB_INSERT(environ, env, envent);
|
|
}
|
|
}
|
|
|
|
void
|
|
environ_put(struct environ *env, const char *var)
|
|
{
|
|
char *name, *value;
|
|
|
|
value = strchr(var, '=');
|
|
if (value == NULL)
|
|
return;
|
|
value++;
|
|
|
|
name = xstrdup(var);
|
|
name[strcspn(name, "=")] = '\0';
|
|
|
|
environ_set(env, name, value);
|
|
xfree(name);
|
|
}
|
|
|
|
void
|
|
environ_unset(struct environ *env, const char *name)
|
|
{
|
|
struct environ_entry *envent;
|
|
|
|
if ((envent = environ_find(env, name)) == NULL)
|
|
return;
|
|
RB_REMOVE(environ, env, envent);
|
|
xfree(envent->name);
|
|
if (envent->value != NULL)
|
|
xfree(envent->value);
|
|
xfree(envent);
|
|
}
|
|
|
|
void
|
|
environ_update(const char *vars, struct environ *srcenv, struct environ *dstenv)
|
|
{
|
|
struct environ_entry *envent;
|
|
char *copyvars, *var, *next;
|
|
|
|
copyvars = next = xstrdup(vars);
|
|
while ((var = strsep(&next, " ")) != NULL) {
|
|
if ((envent = environ_find(srcenv, var)) == NULL)
|
|
environ_set(dstenv, var, NULL);
|
|
else
|
|
environ_set(dstenv, envent->name, envent->value);
|
|
}
|
|
xfree(copyvars);
|
|
}
|