1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227
|
/*
* Copyright (C) 2010 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "modules/filesystem/DOMFileSystemSync.h"
#include "bindings/core/v8/ExceptionState.h"
#include "core/dom/ExceptionCode.h"
#include "core/fileapi/File.h"
#include "core/fileapi/FileError.h"
#include "modules/filesystem/DOMFilePath.h"
#include "modules/filesystem/DirectoryEntrySync.h"
#include "modules/filesystem/ErrorCallback.h"
#include "modules/filesystem/FileEntrySync.h"
#include "modules/filesystem/FileSystemCallbacks.h"
#include "modules/filesystem/FileWriterBaseCallback.h"
#include "modules/filesystem/FileWriterSync.h"
#include "platform/FileMetadata.h"
#include "public/platform/WebFileSystem.h"
#include "public/platform/WebFileSystemCallbacks.h"
namespace blink {
class FileWriterBase;
DOMFileSystemSync* DOMFileSystemSync::create(DOMFileSystemBase* fileSystem)
{
return new DOMFileSystemSync(fileSystem->m_context, fileSystem->name(), fileSystem->type(), fileSystem->rootURL());
}
DOMFileSystemSync::DOMFileSystemSync(ExecutionContext* context, const String& name, FileSystemType type, const KURL& rootURL)
: DOMFileSystemBase(context, name, type, rootURL)
{
}
DOMFileSystemSync::~DOMFileSystemSync()
{
}
void DOMFileSystemSync::reportError(ErrorCallback* errorCallback, FileError* fileError)
{
errorCallback->handleEvent(fileError);
}
DirectoryEntrySync* DOMFileSystemSync::root()
{
return DirectoryEntrySync::create(this, DOMFilePath::root);
}
namespace {
class CreateFileHelper final : public AsyncFileSystemCallbacks {
public:
class CreateFileResult : public GarbageCollectedFinalized<CreateFileResult> {
public:
static CreateFileResult* create()
{
return new CreateFileResult();
}
bool m_failed;
int m_code;
Member<File> m_file;
void trace(Visitor* visitor)
{
visitor->trace(m_file);
}
private:
CreateFileResult()
: m_failed(false)
, m_code(0)
{
}
};
static PassOwnPtr<AsyncFileSystemCallbacks> create(CreateFileResult* result, const String& name, const KURL& url, FileSystemType type)
{
return adoptPtr(static_cast<AsyncFileSystemCallbacks*>(new CreateFileHelper(result, name, url, type)));
}
virtual void didFail(int code) override
{
m_result->m_failed = true;
m_result->m_code = code;
}
virtual ~CreateFileHelper()
{
}
virtual void didCreateSnapshotFile(const FileMetadata& metadata, PassRefPtr<BlobDataHandle> snapshot) override
{
// We can't directly use the snapshot blob data handle because the content type on it hasn't been set.
// The |snapshot| param is here to provide a a chain of custody thru thread bridging that is held onto until
// *after* we've coined a File with a new handle that has the correct type set on it. This allows the
// blob storage system to track when a temp file can and can't be safely deleted.
m_result->m_file = DOMFileSystemBase::createFile(metadata, m_url, m_type, m_name);
}
virtual bool shouldBlockUntilCompletion() const override
{
return true;
}
private:
CreateFileHelper(CreateFileResult* result, const String& name, const KURL& url, FileSystemType type)
: m_result(result)
, m_name(name)
, m_url(url)
, m_type(type)
{
}
Persistent<CreateFileResult> m_result;
String m_name;
KURL m_url;
FileSystemType m_type;
};
} // namespace
File* DOMFileSystemSync::createFile(const FileEntrySync* fileEntry, ExceptionState& exceptionState)
{
KURL fileSystemURL = createFileSystemURL(fileEntry);
CreateFileHelper::CreateFileResult* result(CreateFileHelper::CreateFileResult::create());
fileSystem()->createSnapshotFileAndReadMetadata(fileSystemURL, CreateFileHelper::create(result, fileEntry->name(), fileSystemURL, type()));
if (result->m_failed) {
exceptionState.throwDOMException(result->m_code, "Could not create '" + fileEntry->name() + "'.");
return nullptr;
}
return result->m_file.get();
}
namespace {
class ReceiveFileWriterCallback final : public FileWriterBaseCallback {
public:
static ReceiveFileWriterCallback* create()
{
return new ReceiveFileWriterCallback();
}
virtual void handleEvent(FileWriterBase*) override
{
}
private:
ReceiveFileWriterCallback()
{
}
};
class LocalErrorCallback final : public ErrorCallback {
public:
static LocalErrorCallback* create(FileError::ErrorCode& errorCode)
{
return new LocalErrorCallback(errorCode);
}
virtual void handleEvent(FileError* error) override
{
ASSERT(error->code() != FileError::OK);
m_errorCode = error->code();
}
private:
explicit LocalErrorCallback(FileError::ErrorCode& errorCode)
: m_errorCode(errorCode)
{
}
FileError::ErrorCode& m_errorCode;
};
}
FileWriterSync* DOMFileSystemSync::createWriter(const FileEntrySync* fileEntry, ExceptionState& exceptionState)
{
ASSERT(fileEntry);
FileWriterSync* fileWriter = FileWriterSync::create();
ReceiveFileWriterCallback* successCallback = ReceiveFileWriterCallback::create();
FileError::ErrorCode errorCode = FileError::OK;
LocalErrorCallback* errorCallback = LocalErrorCallback::create(errorCode);
OwnPtr<AsyncFileSystemCallbacks> callbacks = FileWriterBaseCallbacks::create(fileWriter, successCallback, errorCallback, m_context);
callbacks->setShouldBlockUntilCompletion(true);
fileSystem()->createFileWriter(createFileSystemURL(fileEntry), fileWriter, callbacks.release());
if (errorCode != FileError::OK) {
FileError::throwDOMException(exceptionState, errorCode);
return 0;
}
return fileWriter;
}
}
|