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