From 4d4ec3aa0b2c0bb45e7c004885accee303f1277f Mon Sep 17 00:00:00 2001
From: Björn Stenberg <bjorn@haxx.se>
Date: Fri, 3 May 2002 15:36:52 +0000
Subject: Added opendir, closedir and readdir

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@412 a1c6a512-1295-4272-9138-f99709370657
---
 firmware/common/dir.c | 97 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 97 insertions(+)
 create mode 100644 firmware/common/dir.c

(limited to 'firmware/common/dir.c')

diff --git a/firmware/common/dir.c b/firmware/common/dir.c
new file mode 100644
index 0000000000..9388fb243a
--- /dev/null
+++ b/firmware/common/dir.c
@@ -0,0 +1,97 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   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 "fat.h"
+#include "dir.h"
+#include "debug.h"
+#include "types.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;
+    }
+
+    while ( (part = strtok(name, "/")) ) {
+        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;
+
+    return &theent;
+}
-- 
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