Move core/fpdfapi/fpdf_font to core/fpdfapi/font

BUG=pdfium:603

Review-Url: https://codereview.chromium.org/2392773003

1 files changed, 0 insertions, 784 deletions

diff --git a/core/fpdfapi/fpdf_font/fpdf_font_cid.cpp b/core/fpdfapi/fpdf_font/fpdf_font_cid.cpp
deleted file mode 100644
index 91117122aa..0000000000
--- a/core/fpdfapi/fpdf_font/fpdf_font_cid.cpp
+++ /dev/null
@@ -1,784 +0,0 @@
-// Copyright 2014 PDFium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
-
-#include "core/fpdfapi/fpdf_font/font_int.h"
-
-#include "core/fpdfapi/cmaps/cmap_int.h"
-#include "core/fpdfapi/cpdf_modulemgr.h"
-#include "core/fpdfapi/fpdf_font/ttgsubtable.h"
-#include "core/fpdfapi/fpdf_page/cpdf_pagemodule.h"
-#include "core/fpdfapi/fpdf_parser/cpdf_array.h"
-#include "core/fpdfapi/fpdf_parser/cpdf_dictionary.h"
-#include "core/fpdfapi/fpdf_parser/cpdf_simple_parser.h"
-#include "core/fxcrt/fx_ext.h"
-#include "core/fxge/fx_freetype.h"
-
-namespace {
-
-const FX_CHAR* const g_CharsetNames[CIDSET_NUM_SETS] = {
-    nullptr, "GB1", "CNS1", "Japan1", "Korea1", "UCS"};
-
-
-class CPDF_PredefinedCMap {
- public:
-  const FX_CHAR* m_pName;
-  CIDSet m_Charset;
-  CIDCoding m_Coding;
-  CPDF_CMap::CodingScheme m_CodingScheme;
-  uint8_t m_LeadingSegCount;
-  uint8_t m_LeadingSegs[4];
-};
-
-const CPDF_PredefinedCMap g_PredefinedCMaps[] = {
-    {"GB-EUC",
-     CIDSET_GB1,
-     CIDCODING_GB,
-     CPDF_CMap::MixedTwoBytes,
-     1,
-     {0xa1, 0xfe}},
-    {"GBpc-EUC",
-     CIDSET_GB1,
-     CIDCODING_GB,
-     CPDF_CMap::MixedTwoBytes,
-     1,
-     {0xa1, 0xfc}},
-    {"GBK-EUC",
-     CIDSET_GB1,
-     CIDCODING_GB,
-     CPDF_CMap::MixedTwoBytes,
-     1,
-     {0x81, 0xfe}},
-    {"GBKp-EUC",
-     CIDSET_GB1,
-     CIDCODING_GB,
-     CPDF_CMap::MixedTwoBytes,
-     1,
-     {0x81, 0xfe}},
-    {"GBK2K-EUC",
-     CIDSET_GB1,
-     CIDCODING_GB,
-     CPDF_CMap::MixedTwoBytes,
-     1,
-     {0x81, 0xfe}},
-    {"GBK2K",
-     CIDSET_GB1,
-     CIDCODING_GB,
-     CPDF_CMap::MixedTwoBytes,
-     1,
-     {0x81, 0xfe}},
-    {"UniGB-UCS2", CIDSET_GB1, CIDCODING_UCS2, CPDF_CMap::TwoBytes, 0, {}},
-    {"UniGB-UTF16", CIDSET_GB1, CIDCODING_UTF16, CPDF_CMap::TwoBytes, 0, {}},
-    {"B5pc",
-     CIDSET_CNS1,
-     CIDCODING_BIG5,
-     CPDF_CMap::MixedTwoBytes,
-     1,
-     {0xa1, 0xfc}},
-    {"HKscs-B5",
-     CIDSET_CNS1,
-     CIDCODING_BIG5,
-     CPDF_CMap::MixedTwoBytes,
-     1,
-     {0x88, 0xfe}},
-    {"ETen-B5",
-     CIDSET_CNS1,
-     CIDCODING_BIG5,
-     CPDF_CMap::MixedTwoBytes,
-     1,
-     {0xa1, 0xfe}},
-    {"ETenms-B5",
-     CIDSET_CNS1,
-     CIDCODING_BIG5,
-     CPDF_CMap::MixedTwoBytes,
-     1,
-     {0xa1, 0xfe}},
-    {"UniCNS-UCS2", CIDSET_CNS1, CIDCODING_UCS2, CPDF_CMap::TwoBytes, 0, {}},
-    {"UniCNS-UTF16", CIDSET_CNS1, CIDCODING_UTF16, CPDF_CMap::TwoBytes, 0, {}},
-    {"83pv-RKSJ",
-     CIDSET_JAPAN1,
-     CIDCODING_JIS,
-     CPDF_CMap::MixedTwoBytes,
-     2,
-     {0x81, 0x9f, 0xe0, 0xfc}},
-    {"90ms-RKSJ",
-     CIDSET_JAPAN1,
-     CIDCODING_JIS,
-     CPDF_CMap::MixedTwoBytes,
-     2,
-     {0x81, 0x9f, 0xe0, 0xfc}},
-    {"90msp-RKSJ",
-     CIDSET_JAPAN1,
-     CIDCODING_JIS,
-     CPDF_CMap::MixedTwoBytes,
-     2,
-     {0x81, 0x9f, 0xe0, 0xfc}},
-    {"90pv-RKSJ",
-     CIDSET_JAPAN1,
-     CIDCODING_JIS,
-     CPDF_CMap::MixedTwoBytes,
-     2,
-     {0x81, 0x9f, 0xe0, 0xfc}},
-    {"Add-RKSJ",
-     CIDSET_JAPAN1,
-     CIDCODING_JIS,
-     CPDF_CMap::MixedTwoBytes,
-     2,
-     {0x81, 0x9f, 0xe0, 0xfc}},
-    {"EUC",
-     CIDSET_JAPAN1,
-     CIDCODING_JIS,
-     CPDF_CMap::MixedTwoBytes,
-     2,
-     {0x8e, 0x8e, 0xa1, 0xfe}},
-    {"H", CIDSET_JAPAN1, CIDCODING_JIS, CPDF_CMap::TwoBytes, 1, {0x21, 0x7e}},
-    {"V", CIDSET_JAPAN1, CIDCODING_JIS, CPDF_CMap::TwoBytes, 1, {0x21, 0x7e}},
-    {"Ext-RKSJ",
-     CIDSET_JAPAN1,
-     CIDCODING_JIS,
-     CPDF_CMap::MixedTwoBytes,
-     2,
-     {0x81, 0x9f, 0xe0, 0xfc}},
-    {"UniJIS-UCS2", CIDSET_JAPAN1, CIDCODING_UCS2, CPDF_CMap::TwoBytes, 0, {}},
-    {"UniJIS-UCS2-HW",
-     CIDSET_JAPAN1,
-     CIDCODING_UCS2,
-     CPDF_CMap::TwoBytes,
-     0,
-     {}},
-    {"UniJIS-UTF16",
-     CIDSET_JAPAN1,
-     CIDCODING_UTF16,
-     CPDF_CMap::TwoBytes,
-     0,
-     {}},
-    {"KSC-EUC",
-     CIDSET_KOREA1,
-     CIDCODING_KOREA,
-     CPDF_CMap::MixedTwoBytes,
-     1,
-     {0xa1, 0xfe}},
-    {"KSCms-UHC",
-     CIDSET_KOREA1,
-     CIDCODING_KOREA,
-     CPDF_CMap::MixedTwoBytes,
-     1,
-     {0x81, 0xfe}},
-    {"KSCms-UHC-HW",
-     CIDSET_KOREA1,
-     CIDCODING_KOREA,
-     CPDF_CMap::MixedTwoBytes,
-     1,
-     {0x81, 0xfe}},
-    {"KSCpc-EUC",
-     CIDSET_KOREA1,
-     CIDCODING_KOREA,
-     CPDF_CMap::MixedTwoBytes,
-     1,
-     {0xa1, 0xfd}},
-    {"UniKS-UCS2", CIDSET_KOREA1, CIDCODING_UCS2, CPDF_CMap::TwoBytes, 0, {}},
-    {"UniKS-UTF16", CIDSET_KOREA1, CIDCODING_UTF16, CPDF_CMap::TwoBytes, 0, {}},
-};
-
-CIDSet CIDSetFromSizeT(size_t index) {
-  if (index >= CIDSET_NUM_SETS) {
-    NOTREACHED();
-    return CIDSET_UNKNOWN;
-  }
-  return static_cast<CIDSet>(index);
-}
-
-CFX_ByteStringC CMap_GetString(const CFX_ByteStringC& word) {
-  if (word.GetLength() <= 2)
-    return CFX_ByteStringC();
-  return CFX_ByteStringC(&word[1], word.GetLength() - 2);
-}
-
-int CompareDWORD(const void* data1, const void* data2) {
-  return (*(uint32_t*)data1) - (*(uint32_t*)data2);
-}
-
-int CompareCID(const void* key, const void* element) {
-  if ((*(uint32_t*)key) < (*(uint32_t*)element)) {
-    return -1;
-  }
-  if ((*(uint32_t*)key) >
-      (*(uint32_t*)element) + ((uint32_t*)element)[1] / 65536) {
-    return 1;
-  }
-  return 0;
-}
-
-int CheckCodeRange(uint8_t* codes,
-                   int size,
-                   CMap_CodeRange* pRanges,
-                   int nRanges) {
-  int iSeg = nRanges - 1;
-  while (iSeg >= 0) {
-    if (pRanges[iSeg].m_CharSize < size) {
-      --iSeg;
-      continue;
-    }
-    int iChar = 0;
-    while (iChar < size) {
-      if (codes[iChar] < pRanges[iSeg].m_Lower[iChar] ||
-          codes[iChar] > pRanges[iSeg].m_Upper[iChar]) {
-        break;
-      }
-      ++iChar;
-    }
-    if (iChar == pRanges[iSeg].m_CharSize)
-      return 2;
-
-    if (iChar)
-      return (size == pRanges[iSeg].m_CharSize) ? 2 : 1;
-    iSeg--;
-  }
-  return 0;
-}
-
-int GetCharSizeImpl(uint32_t charcode,
-                    CMap_CodeRange* pRanges,
-                    int iRangesSize) {
-  if (!iRangesSize)
-    return 1;
-
-  uint8_t codes[4];
-  codes[0] = codes[1] = 0x00;
-  codes[2] = (uint8_t)(charcode >> 8 & 0xFF);
-  codes[3] = (uint8_t)charcode;
-  int offset = 0;
-  int size = 4;
-  for (int i = 0; i < 4; ++i) {
-    int iSeg = iRangesSize - 1;
-    while (iSeg >= 0) {
-      if (pRanges[iSeg].m_CharSize < size) {
-        --iSeg;
-        continue;
-      }
-      int iChar = 0;
-      while (iChar < size) {
-        if (codes[offset + iChar] < pRanges[iSeg].m_Lower[iChar] ||
-            codes[offset + iChar] > pRanges[iSeg].m_Upper[iChar]) {
-          break;
-        }
-        ++iChar;
-      }
-      if (iChar == pRanges[iSeg].m_CharSize)
-        return size;
-      --iSeg;
-    }
-    --size;
-    ++offset;
-  }
-  return 1;
-}
-
-}  // namespace
-
-CPDF_CMapManager::CPDF_CMapManager() {
-  FXSYS_memset(m_CID2UnicodeMaps, 0, sizeof m_CID2UnicodeMaps);
-}
-CPDF_CMapManager::~CPDF_CMapManager() {
-  for (const auto& pair : m_CMaps) {
-    delete pair.second;
-  }
-  m_CMaps.clear();
-  for (size_t i = 0; i < FX_ArraySize(m_CID2UnicodeMaps); ++i) {
-    delete m_CID2UnicodeMaps[i];
-  }
-}
-CPDF_CMap* CPDF_CMapManager::GetPredefinedCMap(const CFX_ByteString& name,
-                                               bool bPromptCJK) {
-  auto it = m_CMaps.find(name);
-  if (it != m_CMaps.end()) {
-    return it->second;
-  }
-  CPDF_CMap* pCMap = LoadPredefinedCMap(name, bPromptCJK);
-  if (!name.IsEmpty()) {
-    m_CMaps[name] = pCMap;
-  }
-  return pCMap;
-}
-CPDF_CMap* CPDF_CMapManager::LoadPredefinedCMap(const CFX_ByteString& name,
-                                                bool bPromptCJK) {
-  CPDF_CMap* pCMap = new CPDF_CMap;
-  const FX_CHAR* pname = name.c_str();
-  if (*pname == '/') {
-    pname++;
-  }
-  pCMap->LoadPredefined(this, pname, bPromptCJK);
-  return pCMap;
-}
-
-CPDF_CID2UnicodeMap* CPDF_CMapManager::GetCID2UnicodeMap(CIDSet charset,
-                                                         bool bPromptCJK) {
-  if (!m_CID2UnicodeMaps[charset])
-    m_CID2UnicodeMaps[charset] = LoadCID2UnicodeMap(charset, bPromptCJK);
-  return m_CID2UnicodeMaps[charset];
-}
-CPDF_CID2UnicodeMap* CPDF_CMapManager::LoadCID2UnicodeMap(CIDSet charset,
-                                                          bool bPromptCJK) {
-  CPDF_CID2UnicodeMap* pMap = new CPDF_CID2UnicodeMap();
-  pMap->Load(this, charset, bPromptCJK);
-  return pMap;
-}
-
-CPDF_CMapParser::CPDF_CMapParser()
-    : m_pCMap(nullptr), m_Status(0), m_CodeSeq(0) {}
-
-CPDF_CMapParser::~CPDF_CMapParser() {}
-
-void CPDF_CMapParser::Initialize(CPDF_CMap* pCMap) {
-  m_pCMap = pCMap;
-  m_Status = 0;
-  m_CodeSeq = 0;
-  m_AddMaps.EstimateSize(0, 10240);
-}
-
-void CPDF_CMapParser::ParseWord(const CFX_ByteStringC& word) {
-  if (word.IsEmpty()) {
-    return;
-  }
-  if (word == "begincidchar") {
-    m_Status = 1;
-    m_CodeSeq = 0;
-  } else if (word == "begincidrange") {
-    m_Status = 2;
-    m_CodeSeq = 0;
-  } else if (word == "endcidrange" || word == "endcidchar") {
-    m_Status = 0;
-  } else if (word == "/WMode") {
-    m_Status = 6;
-  } else if (word == "/Registry") {
-    m_Status = 3;
-  } else if (word == "/Ordering") {
-    m_Status = 4;
-  } else if (word == "/Supplement") {
-    m_Status = 5;
-  } else if (word == "begincodespacerange") {
-    m_Status = 7;
-    m_CodeSeq = 0;
-  } else if (word == "usecmap") {
-  } else if (m_Status == 1 || m_Status == 2) {
-    m_CodePoints[m_CodeSeq] = CMap_GetCode(word);
-    m_CodeSeq++;
-    uint32_t StartCode, EndCode;
-    uint16_t StartCID;
-    if (m_Status == 1) {
-      if (m_CodeSeq < 2) {
-        return;
-      }
-      EndCode = StartCode = m_CodePoints[0];
-      StartCID = (uint16_t)m_CodePoints[1];
-    } else {
-      if (m_CodeSeq < 3) {
-        return;
-      }
-      StartCode = m_CodePoints[0];
-      EndCode = m_CodePoints[1];
-      StartCID = (uint16_t)m_CodePoints[2];
-    }
-    if (EndCode < 0x10000) {
-      for (uint32_t code = StartCode; code <= EndCode; code++) {
-        m_pCMap->m_pMapping[code] = (uint16_t)(StartCID + code - StartCode);
-      }
-    } else {
-      uint32_t buf[2];
-      buf[0] = StartCode;
-      buf[1] = ((EndCode - StartCode) << 16) + StartCID;
-      m_AddMaps.AppendBlock(buf, sizeof buf);
-    }
-    m_CodeSeq = 0;
-  } else if (m_Status == 3) {
-    m_Status = 0;
-  } else if (m_Status == 4) {
-    m_pCMap->m_Charset = CharsetFromOrdering(CMap_GetString(word));
-    m_Status = 0;
-  } else if (m_Status == 5) {
-    m_Status = 0;
-  } else if (m_Status == 6) {
-    m_pCMap->m_bVertical = CMap_GetCode(word) != 0;
-    m_Status = 0;
-  } else if (m_Status == 7) {
-    if (word == "endcodespacerange") {
-      int nSegs = m_CodeRanges.GetSize();
-      if (nSegs > 1) {
-        m_pCMap->m_CodingScheme = CPDF_CMap::MixedFourBytes;
-        m_pCMap->m_nCodeRanges = nSegs;
-        FX_Free(m_pCMap->m_pLeadingBytes);
-        m_pCMap->m_pLeadingBytes =
-            FX_Alloc2D(uint8_t, nSegs, sizeof(CMap_CodeRange));
-        FXSYS_memcpy(m_pCMap->m_pLeadingBytes, m_CodeRanges.GetData(),
-                     nSegs * sizeof(CMap_CodeRange));
-      } else if (nSegs == 1) {
-        m_pCMap->m_CodingScheme = (m_CodeRanges[0].m_CharSize == 2)
-                                      ? CPDF_CMap::TwoBytes
-                                      : CPDF_CMap::OneByte;
-      }
-      m_Status = 0;
-    } else {
-      if (word.GetLength() == 0 || word.GetAt(0) != '<') {
-        return;
-      }
-      if (m_CodeSeq % 2) {
-        CMap_CodeRange range;
-        if (CMap_GetCodeRange(range, m_LastWord.AsStringC(), word)) {
-          m_CodeRanges.Add(range);
-        }
-      }
-      m_CodeSeq++;
-    }
-  }
-  m_LastWord = word;
-}
-
-// Static.
-uint32_t CPDF_CMapParser::CMap_GetCode(const CFX_ByteStringC& word) {
-  pdfium::base::CheckedNumeric<uint32_t> num = 0;
-  if (word.GetAt(0) == '<') {
-    for (int i = 1; i < word.GetLength() && std::isxdigit(word.GetAt(i)); ++i) {
-      num = num * 16 + FXSYS_toHexDigit(word.GetAt(i));
-      if (!num.IsValid())
-        return 0;
-    }
-    return num.ValueOrDie();
-  }
-
-  for (int i = 0; i < word.GetLength() && std::isdigit(word.GetAt(i)); ++i) {
-    num = num * 10 + FXSYS_toDecimalDigit(static_cast<FX_WCHAR>(word.GetAt(i)));
-    if (!num.IsValid())
-      return 0;
-  }
-  return num.ValueOrDie();
-}
-
-// Static.
-bool CPDF_CMapParser::CMap_GetCodeRange(CMap_CodeRange& range,
-                                        const CFX_ByteStringC& first,
-                                        const CFX_ByteStringC& second) {
-  if (first.GetLength() == 0 || first.GetAt(0) != '<')
-    return false;
-
-  int i;
-  for (i = 1; i < first.GetLength(); ++i) {
-    if (first.GetAt(i) == '>') {
-      break;
-    }
-  }
-  range.m_CharSize = (i - 1) / 2;
-  if (range.m_CharSize > 4)
-    return false;
-
-  for (i = 0; i < range.m_CharSize; ++i) {
-    uint8_t digit1 = first.GetAt(i * 2 + 1);
-    uint8_t digit2 = first.GetAt(i * 2 + 2);
-    range.m_Lower[i] = FXSYS_toHexDigit(digit1) * 16 + FXSYS_toHexDigit(digit2);
-  }
-
-  uint32_t size = second.GetLength();
-  for (i = 0; i < range.m_CharSize; ++i) {
-    uint8_t digit1 = ((uint32_t)i * 2 + 1 < size)
-                         ? second.GetAt((FX_STRSIZE)i * 2 + 1)
-                         : '0';
-    uint8_t digit2 = ((uint32_t)i * 2 + 2 < size)
-                         ? second.GetAt((FX_STRSIZE)i * 2 + 2)
-                         : '0';
-    range.m_Upper[i] = FXSYS_toHexDigit(digit1) * 16 + FXSYS_toHexDigit(digit2);
-  }
-  return true;
-}
-
-CPDF_CMap::CPDF_CMap() {
-  m_Charset = CIDSET_UNKNOWN;
-  m_Coding = CIDCODING_UNKNOWN;
-  m_CodingScheme = TwoBytes;
-  m_bVertical = false;
-  m_bLoaded = false;
-  m_pMapping = nullptr;
-  m_pLeadingBytes = nullptr;
-  m_pAddMapping = nullptr;
-  m_pEmbedMap = nullptr;
-  m_nCodeRanges = 0;
-}
-CPDF_CMap::~CPDF_CMap() {
-  FX_Free(m_pMapping);
-  FX_Free(m_pAddMapping);
-  FX_Free(m_pLeadingBytes);
-}
-
-bool CPDF_CMap::IsLoaded() const {
-  return m_bLoaded;
-}
-
-bool CPDF_CMap::IsVertWriting() const {
-  return m_bVertical;
-}
-
-void CPDF_CMap::LoadPredefined(CPDF_CMapManager* pMgr,
-                               const CFX_ByteString& bsName,
-                               bool bPromptCJK) {
-  m_PredefinedCMap = bsName;
-  if (m_PredefinedCMap == "Identity-H" || m_PredefinedCMap == "Identity-V") {
-    m_Coding = CIDCODING_CID;
-    m_bVertical = bsName[9] == 'V';
-    m_bLoaded = true;
-    return;
-  }
-  CFX_ByteString cmapid = m_PredefinedCMap;
-  m_bVertical = cmapid.Right(1) == "V";
-  if (cmapid.GetLength() > 2) {
-    cmapid = cmapid.Left(cmapid.GetLength() - 2);
-  }
-  const CPDF_PredefinedCMap* map = nullptr;
-  for (size_t i = 0; i < FX_ArraySize(g_PredefinedCMaps); ++i) {
-    if (cmapid == CFX_ByteStringC(g_PredefinedCMaps[i].m_pName)) {
-      map = &g_PredefinedCMaps[i];
-      break;
-    }
-  }
-  if (!map)
-    return;
-
-  m_Charset = map->m_Charset;
-  m_Coding = map->m_Coding;
-  m_CodingScheme = map->m_CodingScheme;
-  if (m_CodingScheme == MixedTwoBytes) {
-    m_pLeadingBytes = FX_Alloc(uint8_t, 256);
-    for (uint32_t i = 0; i < map->m_LeadingSegCount; ++i) {
-      const uint8_t* segs = map->m_LeadingSegs;
-      for (int b = segs[i * 2]; b <= segs[i * 2 + 1]; ++b) {
-        m_pLeadingBytes[b] = 1;
-      }
-    }
-  }
-  FPDFAPI_FindEmbeddedCMap(bsName, m_Charset, m_Coding, m_pEmbedMap);
-  if (!m_pEmbedMap)
-    return;
-
-  m_bLoaded = true;
-}
-
-void CPDF_CMap::LoadEmbedded(const uint8_t* pData, uint32_t size) {
-  m_pMapping = FX_Alloc(uint16_t, 65536);
-  CPDF_CMapParser parser;
-  parser.Initialize(this);
-  CPDF_SimpleParser syntax(pData, size);
-  while (1) {
-    CFX_ByteStringC word = syntax.GetWord();
-    if (word.IsEmpty()) {
-      break;
-    }
-    parser.ParseWord(word);
-  }
-  if (m_CodingScheme == MixedFourBytes && parser.m_AddMaps.GetSize()) {
-    m_pAddMapping = FX_Alloc(uint8_t, parser.m_AddMaps.GetSize() + 4);
-    *(uint32_t*)m_pAddMapping = parser.m_AddMaps.GetSize() / 8;
-    FXSYS_memcpy(m_pAddMapping + 4, parser.m_AddMaps.GetBuffer(),
-                 parser.m_AddMaps.GetSize());
-    FXSYS_qsort(m_pAddMapping + 4, parser.m_AddMaps.GetSize() / 8, 8,
-                CompareDWORD);
-  }
-}
-
-uint16_t CPDF_CMap::CIDFromCharCode(uint32_t charcode) const {
-  if (m_Coding == CIDCODING_CID) {
-    return (uint16_t)charcode;
-  }
-  if (m_pEmbedMap) {
-    return FPDFAPI_CIDFromCharCode(m_pEmbedMap, charcode);
-  }
-  if (!m_pMapping) {
-    return (uint16_t)charcode;
-  }
-  if (charcode >> 16) {
-    if (m_pAddMapping) {
-      void* found = FXSYS_bsearch(&charcode, m_pAddMapping + 4,
-                                  *(uint32_t*)m_pAddMapping, 8, CompareCID);
-      if (!found)
-        return 0;
-      return (uint16_t)(((uint32_t*)found)[1] % 65536 + charcode -
-                        *(uint32_t*)found);
-    }
-    return 0;
-  }
-  return m_pMapping[charcode];
-}
-
-uint32_t CPDF_CMap::GetNextChar(const FX_CHAR* pString,
-                                int nStrLen,
-                                int& offset) const {
-  switch (m_CodingScheme) {
-    case OneByte:
-      return ((uint8_t*)pString)[offset++];
-    case TwoBytes:
-      offset += 2;
-      return ((uint8_t*)pString)[offset - 2] * 256 +
-             ((uint8_t*)pString)[offset - 1];
-    case MixedTwoBytes: {
-      uint8_t byte1 = ((uint8_t*)pString)[offset++];
-      if (!m_pLeadingBytes[byte1]) {
-        return byte1;
-      }
-      uint8_t byte2 = ((uint8_t*)pString)[offset++];
-      return byte1 * 256 + byte2;
-    }
-    case MixedFourBytes: {
-      uint8_t codes[4];
-      int char_size = 1;
-      codes[0] = ((uint8_t*)pString)[offset++];
-      CMap_CodeRange* pRanges = (CMap_CodeRange*)m_pLeadingBytes;
-      while (1) {
-        int ret = CheckCodeRange(codes, char_size, pRanges, m_nCodeRanges);
-        if (ret == 0) {
-          return 0;
-        }
-        if (ret == 2) {
-          uint32_t charcode = 0;
-          for (int i = 0; i < char_size; i++) {
-            charcode = (charcode << 8) + codes[i];
-          }
-          return charcode;
-        }
-        if (char_size == 4 || offset == nStrLen) {
-          return 0;
-        }
-        codes[char_size++] = ((uint8_t*)pString)[offset++];
-      }
-      break;
-    }
-  }
-  return 0;
-}
-int CPDF_CMap::GetCharSize(uint32_t charcode) const {
-  switch (m_CodingScheme) {
-    case OneByte:
-      return 1;
-    case TwoBytes:
-      return 2;
-    case MixedTwoBytes:
-    case MixedFourBytes:
-      if (charcode < 0x100) {
-        return 1;
-      }
-      if (charcode < 0x10000) {
-        return 2;
-      }
-      if (charcode < 0x1000000) {
-        return 3;
-      }
-      return 4;
-  }
-  return 1;
-}
-int CPDF_CMap::CountChar(const FX_CHAR* pString, int size) const {
-  switch (m_CodingScheme) {
-    case OneByte:
-      return size;
-    case TwoBytes:
-      return (size + 1) / 2;
-    case MixedTwoBytes: {
-      int count = 0;
-      for (int i = 0; i < size; i++) {
-        count++;
-        if (m_pLeadingBytes[((uint8_t*)pString)[i]]) {
-          i++;
-        }
-      }
-      return count;
-    }
-    case MixedFourBytes: {
-      int count = 0, offset = 0;
-      while (offset < size) {
-        GetNextChar(pString, size, offset);
-        count++;
-      }
-      return count;
-    }
-  }
-  return size;
-}
-
-int CPDF_CMap::AppendChar(FX_CHAR* str, uint32_t charcode) const {
-  switch (m_CodingScheme) {
-    case OneByte:
-      str[0] = (uint8_t)charcode;
-      return 1;
-    case TwoBytes:
-      str[0] = (uint8_t)(charcode / 256);
-      str[1] = (uint8_t)(charcode % 256);
-      return 2;
-    case MixedTwoBytes:
-    case MixedFourBytes:
-      if (charcode < 0x100) {
-        CMap_CodeRange* pRanges = (CMap_CodeRange*)m_pLeadingBytes;
-        int iSize = GetCharSizeImpl(charcode, pRanges, m_nCodeRanges);
-        if (iSize == 0) {
-          iSize = 1;
-        }
-        if (iSize > 1) {
-          FXSYS_memset(str, 0, sizeof(uint8_t) * iSize);
-        }
-        str[iSize - 1] = (uint8_t)charcode;
-        return iSize;
-      }
-      if (charcode < 0x10000) {
-        str[0] = (uint8_t)(charcode >> 8);
-        str[1] = (uint8_t)charcode;
-        return 2;
-      }
-      if (charcode < 0x1000000) {
-        str[0] = (uint8_t)(charcode >> 16);
-        str[1] = (uint8_t)(charcode >> 8);
-        str[2] = (uint8_t)charcode;
-        return 3;
-      }
-      str[0] = (uint8_t)(charcode >> 24);
-      str[1] = (uint8_t)(charcode >> 16);
-      str[2] = (uint8_t)(charcode >> 8);
-      str[3] = (uint8_t)charcode;
-      return 4;
-  }
-  return 0;
-}
-
-CPDF_CID2UnicodeMap::CPDF_CID2UnicodeMap() {
-  m_EmbeddedCount = 0;
-}
-
-CPDF_CID2UnicodeMap::~CPDF_CID2UnicodeMap() {}
-
-bool CPDF_CID2UnicodeMap::IsLoaded() {
-  return m_EmbeddedCount != 0;
-}
-
-FX_WCHAR CPDF_CID2UnicodeMap::UnicodeFromCID(uint16_t CID) {
-  if (m_Charset == CIDSET_UNICODE) {
-    return CID;
-  }
-  if (CID < m_EmbeddedCount) {
-    return m_pEmbeddedMap[CID];
-  }
-  return 0;
-}
-
-void CPDF_CID2UnicodeMap::Load(CPDF_CMapManager* pMgr,
-                               CIDSet charset,
-                               bool bPromptCJK) {
-  m_Charset = charset;
-
-  CPDF_FontGlobals* pFontGlobals =
-      CPDF_ModuleMgr::Get()->GetPageModule()->GetFontGlobals();
-  m_pEmbeddedMap = pFontGlobals->m_EmbeddedToUnicodes[charset].m_pMap;
-  m_EmbeddedCount = pFontGlobals->m_EmbeddedToUnicodes[charset].m_Count;
-}
-
-CIDSet CharsetFromOrdering(const CFX_ByteStringC& ordering) {
-  for (size_t charset = 1; charset < FX_ArraySize(g_CharsetNames); ++charset) {
-    if (ordering == g_CharsetNames[charset])
-      return CIDSetFromSizeT(charset);
-  }
-  return CIDSET_UNKNOWN;
-}