diff options
Diffstat (limited to 'core/fpdfapi/font/fpdf_font_cid.cpp')
| -rw-r--r-- | core/fpdfapi/font/fpdf_font_cid.cpp | 783 |
1 files changed, 783 insertions, 0 deletions
diff --git a/core/fpdfapi/font/fpdf_font_cid.cpp b/core/fpdfapi/font/fpdf_font_cid.cpp new file mode 100644 index 0000000000..1d8052bc29 --- /dev/null +++ b/core/fpdfapi/font/fpdf_font_cid.cpp @@ -0,0 +1,783 @@ +// 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/font/font_int.h" + +#include "core/fpdfapi/cmaps/cmap_int.h" +#include "core/fpdfapi/cpdf_modulemgr.h" +#include "core/fpdfapi/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; +} |