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* Copyright (C) 2009 Google Inc. All rights reserved.
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following disclaimer
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* in the documentation and/or other materials provided with the
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* * Neither the name of Google Inc. nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#if USE(OPENTYPE_SANITIZER)
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#include "OpenTypeSanitizer.h"
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#include "SharedBuffer.h"
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#include "opentype-sanitiser.h"
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#include "ots-memory-stream.h"
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#include <wtf/OwnArrayPtr.h>
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PassRefPtr<SharedBuffer> OpenTypeSanitizer::sanitize()
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// This is the largest web font size which we'll try to transcode.
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static const size_t maxWebFontSize = 30 * 1024 * 1024; // 30 MB
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if (m_buffer->size() > maxWebFontSize)
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// A transcoded font is usually smaller than an original font.
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// However, it can be slightly bigger than the original one due to
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// name table replacement and/or padding for glyf table.
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// With WOFF fonts, however, we'll be decompressing, so the result can be
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// much larger than the original.
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ots::ExpandingMemoryStream output(m_buffer->size(), maxWebFontSize);
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if (!ots::Process(&output, reinterpret_cast<const uint8_t*>(m_buffer->data()), m_buffer->size()))
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const size_t transcodeLen = output.Tell();
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return SharedBuffer::create(static_cast<unsigned char*>(output.get()), transcodeLen);
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} // namespace WebCore
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#endif // USE(OPENTYPE_SANITIZER)