47 lines
1.1 KiB
C++
47 lines
1.1 KiB
C++
// Copyright (c) 2009-2017 The OTS Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "cvt.h"
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// cvt - Control Value Table
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// http://www.microsoft.com/typography/otspec/cvt.htm
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namespace ots {
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bool OpenTypeCVT::Parse(const uint8_t *data, size_t length) {
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Buffer table(data, length);
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if (length >= 128 * 1024u) {
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return Error("Length (%d) > 120K"); // almost all cvt tables are less than 4k bytes.
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}
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if (length % 2 != 0) {
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return Error("Uneven table length (%d)", length);
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}
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if (!table.Skip(length)) {
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return Error("Table length too high");
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}
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this->data = data;
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this->length = length;
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return true;
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}
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bool OpenTypeCVT::Serialize(OTSStream *out) {
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if (!out->Write(this->data, this->length)) {
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return Error("Failed to write cvt table");
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}
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return true;
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}
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bool OpenTypeCVT::ShouldSerialize() {
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return Table::ShouldSerialize() &&
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// this table is not for CFF fonts.
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GetFont()->GetTable(OTS_TAG_GLYF) != NULL;
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}
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} // namespace ots
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