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/*
* 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 "modules/filesystem/FileWriterSync.h"
#include "bindings/core/v8/ExceptionState.h"
#include "core/dom/ExceptionCode.h"
#include "core/fileapi/Blob.h"
#include "public/platform/WebFileWriter.h"
#include "public/platform/WebURL.h"
namespace blink {
void FileWriterSync::write(Blob* data, ExceptionState& exceptionState) {
ASSERT(data);
ASSERT(writer());
DCHECK(m_complete);
prepareForWrite();
writer()->write(position(), data->uuid());
DCHECK(m_complete);
if (m_error) {
FileError::throwDOMException(exceptionState, m_error);
return;
}
setPosition(position() + data->size());
if (position() > length())
setLength(position());
}
void FileWriterSync::seek(long long position, ExceptionState& exceptionState) {
ASSERT(writer());
DCHECK(m_complete);
seekInternal(position);
}
void FileWriterSync::truncate(long long offset,
ExceptionState& exceptionState) {
ASSERT(writer());
DCHECK(m_complete);
if (offset < 0) {
exceptionState.throwDOMException(InvalidStateError,
FileError::invalidStateErrorMessage);
return;
}
prepareForWrite();
writer()->truncate(offset);
DCHECK(m_complete);
if (m_error) {
FileError::throwDOMException(exceptionState, m_error);
return;
}
if (offset < position())
setPosition(offset);
setLength(offset);
}
void FileWriterSync::didWrite(long long bytes, bool complete) {
DCHECK_EQ(FileError::kOK, m_error);
DCHECK(!m_complete);
m_complete = complete;
}
void FileWriterSync::didTruncate() {
DCHECK_EQ(FileError::kOK, m_error);
DCHECK(!m_complete);
m_complete = true;
}
void FileWriterSync::didFail(WebFileError error) {
DCHECK_EQ(FileError::kOK, m_error);
m_error = static_cast<FileError::ErrorCode>(error);
DCHECK(!m_complete);
m_complete = true;
}
FileWriterSync::FileWriterSync() : m_error(FileError::kOK), m_complete(true) {}
void FileWriterSync::prepareForWrite() {
DCHECK(m_complete);
m_error = FileError::kOK;
m_complete = false;
}
FileWriterSync::~FileWriterSync() {}
DEFINE_TRACE(FileWriterSync) {
FileWriterBase::trace(visitor);
}
} // namespace blink
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