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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2002 by Björn Stenberg
*
* All files in this archive are subject to the GNU General Public License.
* See the file COPYING in the source tree root for full license agreement.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include <stdio.h>
#include <string.h>
#include <stdbool.h>
#include "fat.h"
#include "dir.h"
#include "debug.h"
static DIR thedir;
static struct dirent theent;
static bool busy=false;
DIR* opendir(char* name)
{
char* part;
struct fat_direntry entry;
struct fat_dir* dir = &(thedir.fatdir);
if ( busy ) {
DEBUGF("Only one open dir at a time\n");
return NULL;
}
if ( name[0] != '/' ) {
DEBUGF("Only absolute paths supported right now\n");
return NULL;
}
if ( fat_opendir(dir, 0) < 0 ) {
DEBUGF("Failed opening root dir\n");
return NULL;
}
/* fixme: strtok() is not thread safe, and fat_getnext() calls yield() */
for ( part = strtok(name, "/"); part;
part = strtok(NULL, "/")) {
int partlen = strlen(part);
/* scan dir for name */
while (1) {
if (fat_getnext(dir,&entry) < 0)
return NULL;
if ( !entry.name[0] )
return NULL;
if ( (entry.attr & FAT_ATTR_DIRECTORY) &&
(!strncmp(part, entry.name, partlen)) ) {
if ( fat_opendir(dir, entry.firstcluster) < 0 ) {
DEBUGF("Failed opening dir '%s' (%d)\n",
part, entry.firstcluster);
return NULL;
}
break;
}
}
}
busy = true;
return &thedir;
}
int closedir(DIR* dir)
{
busy=false;
return 0;
}
struct dirent* readdir(DIR* dir)
{
struct fat_direntry entry;
if (fat_getnext(&(dir->fatdir),&entry) < 0)
return NULL;
if ( !entry.name[0] )
return NULL;
strncpy(theent.d_name, entry.name, sizeof( theent.d_name ) );
theent.attribute = entry.attr;
theent.size = entry.filesize;
theent.startcluster = entry.firstcluster;
return &theent;
}
/*
* local variables:
* eval: (load-file "../rockbox-mode.el")
* end:
*/
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