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      1 /*
      2  * Copyright (C) 2010 Google Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions are
      6  * met:
      7  *
      8  *     * Redistributions of source code must retain the above copyright
      9  * notice, this list of conditions and the following disclaimer.
     10  *     * Redistributions in binary form must reproduce the above
     11  * copyright notice, this list of conditions and the following disclaimer
     12  * in the documentation and/or other materials provided with the
     13  * distribution.
     14  *     * Neither the name of Google Inc. nor the names of its
     15  * contributors may be used to endorse or promote products derived from
     16  * this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #include "config.h"
     32 #include "LocalFileSystem.h"
     33 
     34 #if PLATFORM(CHROMIUM)
     35 #error "Chromium should not compile this file and instead define its own version of these factories."
     36 #endif
     37 
     38 #if ENABLE(FILE_SYSTEM)
     39 
     40 #include "CrossThreadTask.h"
     41 #include "DOMFileSystem.h"
     42 #include "ErrorCallback.h"
     43 #include "ExceptionCode.h"
     44 #include "FileError.h"
     45 #include "FileSystemCallback.h"
     46 #include "FileSystemCallbacks.h"
     47 #include "ScriptExecutionContext.h"
     48 #include "SecurityOrigin.h"
     49 #include <wtf/PassRefPtr.h>
     50 
     51 namespace WebCore {
     52 
     53 LocalFileSystem* LocalFileSystem::s_instance = 0;
     54 
     55 void LocalFileSystem::initializeLocalFileSystem(const String& basePath)
     56 {
     57     // FIXME: Should initialize the quota settings as well.
     58     ASSERT(isMainThread());
     59     ASSERT(!s_instance);
     60     if (s_instance)
     61         return;
     62 
     63     OwnPtr<LocalFileSystem> localFileSystem = adoptPtr(new LocalFileSystem(basePath));
     64     s_instance = localFileSystem.leakPtr();
     65 }
     66 
     67 LocalFileSystem& LocalFileSystem::localFileSystem()
     68 {
     69     // initializeLocalFileSystem must be called prior calling this.
     70     ASSERT(s_instance);
     71     return *s_instance;
     72 }
     73 
     74 String LocalFileSystem::fileSystemBasePath() const
     75 {
     76     return m_basePath;
     77 }
     78 
     79 static void openFileSystem(ScriptExecutionContext*, const String& basePath, const String& identifier, AsyncFileSystem::Type type, bool create, PassOwnPtr<AsyncFileSystemCallbacks> callbacks)
     80 {
     81     AsyncFileSystem::openFileSystem(basePath, identifier, type, create, callbacks);
     82 }
     83 
     84 void LocalFileSystem::readFileSystem(ScriptExecutionContext* context, AsyncFileSystem::Type type, PassOwnPtr<AsyncFileSystemCallbacks> callbacks, bool)
     85 {
     86     // AsyncFileSystem::openFileSystem calls callbacks synchronously, so the method needs to be called asynchronously.
     87     context->postTask(createCallbackTask(&openFileSystem, fileSystemBasePath(), context->securityOrigin()->databaseIdentifier(), type, false, callbacks));
     88 }
     89 
     90 void LocalFileSystem::requestFileSystem(ScriptExecutionContext* context, AsyncFileSystem::Type type, long long, PassOwnPtr<AsyncFileSystemCallbacks> callbacks, bool)
     91 {
     92     // AsyncFileSystem::openFileSystem calls callbacks synchronously, so the method needs to be called asynchronously.
     93     context->postTask(createCallbackTask(&openFileSystem, fileSystemBasePath(), context->securityOrigin()->databaseIdentifier(), type, true, callbacks));
     94 }
     95 
     96 } // namespace
     97 
     98 #endif // ENABLE(FILE_SYSTEM)
     99