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/*
* Copyright (C) 2011 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 THIRD_PARTY_BLINK_RENDERER_PLATFORM_MHTML_SHARED_BUFFER_CHUNK_READER_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_MHTML_SHARED_BUFFER_CHUNK_READER_H_
#include "third_party/blink/renderer/platform/wtf/allocator/allocator.h"
#include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"
#include "third_party/blink/renderer/platform/wtf/vector.h"
namespace blink {
class SharedBufferChunkReader final {
DISALLOW_NEW();
public:
SharedBufferChunkReader(scoped_refptr<const SharedBuffer>,
std::string_view separator);
SharedBufferChunkReader(const SharedBufferChunkReader&) = delete;
SharedBufferChunkReader& operator=(const SharedBufferChunkReader&) = delete;
void SetSeparator(std::string_view separator);
// Returns false when the end of the buffer was reached.
bool NextChunk(Vector<char>& data, bool include_separator = false);
// Returns a null string when the end of the buffer has been reached.
String NextChunkAsUTF8StringWithLatin1Fallback(
bool include_separator = false);
// Reads size bytes at the current location in the buffer, without changing
// the buffer position.
// Returns the number of bytes read. That number might be less than the
// specified size if the end of the buffer was reached.
size_t Peek(Vector<char>&, size_t);
private:
scoped_refptr<const SharedBuffer> buffer_;
size_t buffer_position_;
base::span<const char> segment_;
uint32_t segment_index_;
bool reached_end_of_file_;
Vector<char> separator_;
uint32_t separator_index_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_PLATFORM_MHTML_SHARED_BUFFER_CHUNK_READER_H_
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