Break of file routines into udf_file.{c,h}

udf1: Add link count

lib/udf/udf_file.c

@@ -0,0 +1,83 @@
+/*
+    $Id: udf_file.c,v 1.1 2005/10/30 07:35:37 rocky Exp $
+
+    Copyright (C) 2005 Rocky Bernstein <rocky@panix.com>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program 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
+*/
+/* Access routines */
+
+#include <cdio/bytesex.h>
+#include "udf_private.h"
+
+#ifdef HAVE_STRING_H
+# include <string.h>
+#endif
+
+const char *
+udf_get_filename(const udf_file_t *p_udf_file)
+{
+  if (!p_udf_file) return NULL;
+  return p_udf_file->psz_name;
+}
+
+bool
+udf_get_file_entry(const udf_file_t *p_udf_file, 
+		   /*out*/ udf_file_entry_t *p_udf_fe)
+{
+  if (!p_udf_file) return false;
+  memcpy(p_udf_fe, &p_udf_file->fe, sizeof(udf_file_entry_t));
+  return true;
+}
+
+/*!
+  Return the file id descriptor of the given file.
+*/
+bool udf_get_fileid_descriptor(const udf_file_t *p_udf_file, 
+			       /*out*/ udf_fileid_desc_t *p_udf_fid)
+{
+  
+  if (!p_udf_file) return false;
+  if (!p_udf_file->fid) {
+    /* FIXME do something about trying to get the descriptor. */
+    return false;
+  }
+  memcpy(p_udf_fid, p_udf_file->fid, sizeof(udf_fileid_desc_t));
+  return true;
+}
+
+
+/*!
+  Return the number of hard links of the file. Return 0 if error.
+*/
+uint16_t udf_get_link_count(const udf_file_t *p_udf_file) 
+{
+  if (p_udf_file) {
+    udf_file_entry_t udf_fe;
+    if (udf_get_file_entry(p_udf_file, &udf_fe)) {
+      return uint16_from_le(udf_fe.link_count);
+    }
+  }
+  return 0; /* Error. Non-error case handled above. */
+}
+
+/*!
+  Return true if the file is a directory.
+*/
+bool
+udf_is_dir(const udf_file_t *p_udf_file)
+{
+  return p_udf_file->b_dir;
+}