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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.
*/
#ifndef FileReaderSync_h
#define FileReaderSync_h
#if ENABLE(BLOB)
#include "ExceptionCode.h"
#include "ScriptString.h"
#include <wtf/PassRefPtr.h>
#include <wtf/RefCounted.h>
namespace WebCore {
class Blob;
class ScriptExecutionContext;
class FileReaderSync : public RefCounted<FileReaderSync> {
public:
static PassRefPtr<FileReaderSync> create()
{
return adoptRef(new FileReaderSync());
}
virtual ~FileReaderSync() { }
const ScriptString& readAsBinaryString(ScriptExecutionContext*, Blob*, ExceptionCode&);
const ScriptString& readAsText(ScriptExecutionContext* scriptExecutionContext, Blob* blob, ExceptionCode& ec)
{
return readAsText(scriptExecutionContext, blob, "", ec);
}
const ScriptString& readAsText(ScriptExecutionContext*, Blob*, const String& encoding, ExceptionCode&);
const ScriptString& readAsDataURL(ScriptExecutionContext*, Blob*, ExceptionCode&);
private:
enum ReadType {
ReadAsBinaryString,
ReadAsText,
ReadAsDataURL
};
FileReaderSync();
void read(ScriptExecutionContext*, Blob*, ReadType, ExceptionCode&);
void convertToText(const char* data, int size, ScriptString& result);
// Like XMLHttpRequest.m_responseText, we keep this as a ScriptString, not a WTF::String.
// That's because these strings can easily get huge (they are filled from the file) and
// because JS can easily observe many intermediate states, so it's very useful to be
// able to share the buffer with JavaScript versions of the whole or partial string.
// In contrast, this string doesn't interact much with the rest of the engine so it's not that
// big a cost that it isn't a String.
ScriptString m_result;
String m_encoding;
};
} // namespace WebCore
#endif // ENABLE(BLOB)
#endif // FileReaderSync_h
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