/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is mozilla.org code.
 *
 * The Initial Developer of the Original Code is
 * Netscape Communications Corporation.
 * Portions created by the Initial Developer are Copyright (C) 1998
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
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#include "nsMacResources.h"
#include <Carbon/Carbon.h>

short nsMacResources::mRefNum      = kResFileNotOpened;
short nsMacResources::mSaveResFile = 0;


nsresult nsMacResources::OpenLocalResourceFile()
{
  if (mRefNum == kResFileNotOpened) {
    CFBundleRef appBundle = ::CFBundleGetMainBundle();
    if (appBundle) {
      CFURLRef executable = ::CFBundleCopyExecutableURL(appBundle);
      if (executable) {
        CFURLRef binDir = ::CFURLCreateCopyDeletingLastPathComponent(
                           kCFAllocatorDefault, executable);
        if (binDir) {
          CFURLRef resourceFile = ::CFURLCreateCopyAppendingPathComponent(
                                   kCFAllocatorDefault, binDir,
                                   CFSTR("libwidget.rsrc"), PR_FALSE);
          if (resourceFile) {
            FSRef resourceRef;
            if (::CFURLGetFSRef(resourceFile, &resourceRef))
              ::FSOpenResourceFile(&resourceRef, 0, NULL, fsRdPerm, &mRefNum);
            ::CFRelease(resourceFile);
          }
          ::CFRelease(binDir);
        }
        ::CFRelease(executable);
      }
    }
  }
  if (mRefNum == kResFileNotOpened)
    return NS_ERROR_NOT_INITIALIZED;

  mSaveResFile = ::CurResFile();
  ::UseResFile(mRefNum);

  return (::ResError() == noErr ? NS_OK : NS_ERROR_FAILURE);
}


nsresult nsMacResources::CloseLocalResourceFile()
{
  if (mRefNum == kResFileNotOpened)
    return NS_ERROR_NOT_INITIALIZED;

  ::UseResFile(mSaveResFile);

  return (::ResError() == noErr ? NS_OK : NS_ERROR_FAILURE);
}