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/* $OpenBSD: options.c,v 1.2 2009/07/21 19:54:22 nicm Exp $ */
/*
* Copyright (c) 2008 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 <stdarg.h>
#include <string.h>
#include "tmux.h"
/*
* Option handling; each option has a name, type and value and is stored in
* a splay tree.
*/
SPLAY_GENERATE(options_tree, options_entry, entry, options_cmp);
int
options_cmp(struct options_entry *o1, struct options_entry *o2)
{
return (strcmp(o1->name, o2->name));
}
void
options_init(struct options *oo, struct options *parent)
{
SPLAY_INIT(&oo->tree);
oo->parent = parent;
}
void
options_free(struct options *oo)
{
struct options_entry *o;
while (!SPLAY_EMPTY(&oo->tree)) {
o = SPLAY_ROOT(&oo->tree);
SPLAY_REMOVE(options_tree, &oo->tree, o);
xfree(o->name);
if (o->type == OPTIONS_STRING)
xfree(o->value.string);
xfree(o);
}
}
struct options_entry *
options_find1(struct options *oo, const char *name)
{
struct options_entry p;
p.name = (char *) name;
return (SPLAY_FIND(options_tree, &oo->tree, &p));
}
struct options_entry *
options_find(struct options *oo, const char *name)
{
struct options_entry *o, p;
p.name = (char *) name;
o = SPLAY_FIND(options_tree, &oo->tree, &p);
while (o == NULL) {
oo = oo->parent;
if (oo == NULL)
break;
o = SPLAY_FIND(options_tree, &oo->tree, &p);
}
return (o);
}
void
options_remove(struct options *oo, const char *name)
{
struct options_entry *o;
if ((o = options_find1(oo, name)) == NULL)
return;
SPLAY_REMOVE(options_tree, &oo->tree, o);
xfree(o->name);
if (o->type == OPTIONS_STRING)
xfree(o->value.string);
xfree(o);
}
void printflike3
options_set_string(struct options *oo, const char *name, const char *fmt, ...)
{
struct options_entry *o;
va_list ap;
if ((o = options_find1(oo, name)) == NULL) {
o = xmalloc(sizeof *o);
o->name = xstrdup(name);
SPLAY_INSERT(options_tree, &oo->tree, o);
} else if (o->type == OPTIONS_STRING)
xfree(o->value.string);
va_start(ap, fmt);
o->type = OPTIONS_STRING;
xvasprintf(&o->value.string, fmt, ap);
va_end(ap);
}
char *
options_get_string(struct options *oo, const char *name)
{
struct options_entry *o;
if ((o = options_find(oo, name)) == NULL)
fatalx("missing option");
if (o->type != OPTIONS_STRING)
fatalx("option not a string");
return (o->value.string);
}
void
options_set_number(struct options *oo, const char *name, long long value)
{
struct options_entry *o;
if ((o = options_find1(oo, name)) == NULL) {
o = xmalloc(sizeof *o);
o->name = xstrdup(name);
SPLAY_INSERT(options_tree, &oo->tree, o);
} else if (o->type == OPTIONS_STRING)
xfree(o->value.string);
o->type = OPTIONS_NUMBER;
o->value.number = value;
}
long long
options_get_number(struct options *oo, const char *name)
{
struct options_entry *o;
if ((o = options_find(oo, name)) == NULL)
fatalx("missing option");
if (o->type != OPTIONS_NUMBER)
fatalx("option not a number");
return (o->value.number);
}
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