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/*
* module.c
* (C)Copyright 2000 by Hiroshi Takekawa
* This file is part of Enfle.
*
* Last Modified: Mon Feb 18 01:39:10 2002.
* $Id: module.c,v 1.1 2003/08/01 13:41:06 makeinu Exp $
*
* Enfle is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* Enfle is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#define REQUIRE_STRING_H
#include "compat.h"
#include "common.h"
#include "module.h"
#include "misc.h"
typedef struct _module_list ModuleList;
struct _module_list {
char *filename;
HMODULE module;
ModuleList *prev;
ModuleList *next;
};
ModuleList *mod_list = NULL;
static ModuleList *
module_find(const char *filename)
{
ModuleList *p = mod_list;
if (!mod_list)
return NULL;
if (filename == NULL) {
while (p && p->filename) {
p = p->prev;
}
} else {
char *trimmed = misc_trim_ext(p->filename, "dll");
do {
if (strcasecmp(p->filename, filename) == 0 ||
strcasecmp(trimmed, filename) == 0) {
free(trimmed);
return p;
}
p = p->prev;
} while (p);
free(trimmed);
}
return p;
}
int
module_register(const char *filename, HMODULE module)
{
if (mod_list == NULL) {
mod_list = malloc(sizeof(ModuleList));
mod_list->next = mod_list->prev = NULL;
} else {
if (module_find(filename))
return 1;
mod_list->next = malloc(sizeof(ModuleList));
mod_list->next->prev = mod_list;
mod_list->next->next = NULL;
mod_list = mod_list->next;
}
mod_list->filename = filename ? strdup(filename) : NULL;
mod_list->module = module;
return 1;
}
static int
module_delete(ModuleList *p)
{
if (p) {
if (p->prev)
p->prev->next = p->next;
if (p->next)
p->next->prev = p->prev;
if (mod_list == p)
mod_list = mod_list->prev;
if (p->module)
free(p->module);
free(p);
return 1;
}
return 0;
}
int
module_deregister(const char *filename)
{
ModuleList *p;
p = module_find(filename);
return module_delete(p);
}
HMODULE
module_lookup(const char *filename)
{
ModuleList *p;
if ((p = module_find(filename)) == NULL)
return NULL;
return p->module;
}
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