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/* $OpenBSD: options.c,v 1.18 2016/01/19 15:59:12 nicm Exp $ */
/*
* Copyright (c) 2008 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 <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include "tmux.h"
/*
* Option handling; each option has a name, type and value and is stored in
* a red-black tree.
*/
struct options {
RB_HEAD(options_tree, options_entry) tree;
struct options *parent;
};
static int options_cmp(struct options_entry *, struct options_entry *);
RB_PROTOTYPE(options_tree, options_entry, entry, options_cmp);
RB_GENERATE(options_tree, options_entry, entry, options_cmp);
static void options_free1(struct options *, struct options_entry *);
static int
options_cmp(struct options_entry *o1, struct options_entry *o2)
{
return (strcmp(o1->name, o2->name));
}
struct options *
options_create(struct options *parent)
{
struct options *oo;
oo = xcalloc(1, sizeof *oo);
RB_INIT(&oo->tree);
oo->parent = parent;
return (oo);
}
static void
options_free1(struct options *oo, struct options_entry *o)
{
RB_REMOVE(options_tree, &oo->tree, o);
free((char *)o->name);
if (o->type == OPTIONS_STRING)
free(o->str);
free(o);
}
void
options_free(struct options *oo)
{
struct options_entry *o, *o1;
RB_FOREACH_SAFE (o, options_tree, &oo->tree, o1)
options_free1(oo, o);
free(oo);
}
struct options_entry *
options_first(struct options *oo)
{
return (RB_MIN(options_tree, &oo->tree));
}
struct options_entry *
options_next(struct options_entry *o)
{
return (RB_NEXT(options_tree, &oo->tree, o));
}
struct options_entry *
options_find1(struct options *oo, const char *name)
{
struct options_entry p;
p.name = (char *)name;
return (RB_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 = RB_FIND(options_tree, &oo->tree, &p);
while (o == NULL) {
oo = oo->parent;
if (oo == NULL)
break;
o = RB_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)
options_free1(oo, o);
}
struct options_entry *
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);
RB_INSERT(options_tree, &oo->tree, o);
memcpy(&o->style, &grid_default_cell, sizeof o->style);
} else if (o->type == OPTIONS_STRING)
free(o->str);
va_start(ap, fmt);
o->type = OPTIONS_STRING;
xvasprintf(&o->str, fmt, ap);
va_end(ap);
return (o);
}
char *
options_get_string(struct options *oo, const char *name)
{
struct options_entry *o;
if ((o = options_find(oo, name)) == NULL)
fatalx("missing option %s", name);
if (o->type != OPTIONS_STRING)
fatalx("option %s not a string", name);
return (o->str);
}
struct options_entry *
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);
RB_INSERT(options_tree, &oo->tree, o);
memcpy(&o->style, &grid_default_cell, sizeof o->style);
} else if (o->type == OPTIONS_STRING)
free(o->str);
o->type = OPTIONS_NUMBER;
o->num = value;
return (o);
}
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 %s", name);
if (o->type != OPTIONS_NUMBER)
fatalx("option %s not a number", name);
return (o->num);
}
struct options_entry *
options_set_style(struct options *oo, const char *name, const char *value,
int append)
{
struct options_entry *o;
struct grid_cell tmpgc;
o = options_find1(oo, name);
if (o == NULL || !append)
memcpy(&tmpgc, &grid_default_cell, sizeof tmpgc);
else
memcpy(&tmpgc, &o->style, sizeof tmpgc);
if (style_parse(&grid_default_cell, &tmpgc, value) == -1)
return (NULL);
if (o == NULL) {
o = xmalloc(sizeof *o);
o->name = xstrdup(name);
RB_INSERT(options_tree, &oo->tree, o);
} else if (o->type == OPTIONS_STRING)
free(o->str);
o->type = OPTIONS_STYLE;
memcpy(&o->style, &tmpgc, sizeof o->style);
return (o);
}
struct grid_cell *
options_get_style(struct options *oo, const char *name)
{
struct options_entry *o;
if ((o = options_find(oo, name)) == NULL)
fatalx("missing option %s", name);
if (o->type != OPTIONS_STYLE)
fatalx("option %s not a style", name);
return (&o->style);
}
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