// Copyright (c) 2009-2017 The OTS Authors. All rights reserved.

// Use of this source code is governed by a BSD-style license that can be

// found in the LICENSE file.

#ifndef OTS_CMAP_H_

#define OTS_CMAP_H_

#include <vector>

#include "ots.h"

namespace ots {

struct OpenTypeCMAPSubtableRange {

  uint32_t start_range;

  uint32_t end_range;

  uint32_t start_glyph_id;

};

struct OpenTypeCMAPSubtableVSRange {

  uint32_t unicode_value;

  uint8_t additional_count;

};

struct OpenTypeCMAPSubtableVSMapping {

  uint32_t unicode_value;

  uint16_t glyph_id;

};

struct OpenTypeCMAPSubtableVSRecord {

  uint32_t var_selector;

  uint32_t default_offset;

  uint32_t non_default_offset;

  std::vector<OpenTypeCMAPSubtableVSRange> ranges;

  std::vector<OpenTypeCMAPSubtableVSMapping> mappings;

};

class OpenTypeCMAP : public Table {

 public:

  explicit OpenTypeCMAP(Font *font, uint32_t tag)

      : Table(font, tag, tag),

        subtable_0_3_4_data(NULL),

        subtable_0_3_4_length(0),

        subtable_0_5_14_length(0),

        subtable_3_0_4_data(NULL),

        subtable_3_0_4_length(0),

        subtable_3_1_4_data(NULL),

        subtable_3_1_4_length(0) {

  }

  bool Parse(const uint8_t *data, size_t length);

  bool Serialize(OTSStream *out);

 private:

  // Platform 0, Encoding 3, Format 4, Unicode BMP table.

  const uint8_t *subtable_0_3_4_data;

  size_t subtable_0_3_4_length;

  // Platform 0, Encoding 5, Format 14, Unicode Variation Sequence table.

  size_t subtable_0_5_14_length;

  std::vector<OpenTypeCMAPSubtableVSRecord> subtable_0_5_14;

  // Platform 3, Encoding 0, Format 4, MS Symbol table.

  const uint8_t *subtable_3_0_4_data;

  size_t subtable_3_0_4_length;

  // Platform 3, Encoding 1, Format 4, MS Unicode BMP table.

  const uint8_t *subtable_3_1_4_data;

  size_t subtable_3_1_4_length;

  // Platform 3, Encoding 10, Format 12, MS Unicode UCS-4 table.

  std::vector<OpenTypeCMAPSubtableRange> subtable_3_10_12;

  // Platform 3, Encoding 10, Format 13, MS UCS-4 Fallback table.

  std::vector<OpenTypeCMAPSubtableRange> subtable_3_10_13;

  // Platform 1, Encoding 0, Format 0, Mac Roman table.

  std::vector<uint8_t> subtable_1_0_0;

  bool ParseFormat4(int platform, int encoding, const uint8_t *data,

                    size_t length, uint16_t num_glyphs);

  bool Parse31012(const uint8_t *data, size_t length, uint16_t num_glyphs);

  bool Parse31013(const uint8_t *data, size_t length, uint16_t num_glyphs);

  bool Parse0514(const uint8_t *data, size_t length);

  bool Parse100(const uint8_t *data, size_t length);

};

}  // namespace ots

#endif