Make code compile with clang_use_chrome_plugin (part I)

core/fpdfapi/fpdf_font/ttgsubtable.cpp

 // 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/ttgsubtable.h"
 
 #include <memory>
 
 #include "core/fxge/include/fx_freetype.h"
 #include "core/fxge/include/fx_ge.h"
 #include "third_party/base/stl_util.h"
 
 CFX_GlyphMap::CFX_GlyphMap() {}
+
 CFX_GlyphMap::~CFX_GlyphMap() {}
+
 extern "C" {
 static int _CompareInt(const void* p1, const void* p2) {
   return (*(uint32_t*)p1) - (*(uint32_t*)p2);
 }
 };
+
 struct _IntPair {
   int32_t key;
   int32_t value;
 };
+
 void CFX_GlyphMap::SetAt(int key, int value) {
   uint32_t count = m_Buffer.GetSize() / sizeof(_IntPair);
   _IntPair* buf = (_IntPair*)m_Buffer.GetBuffer();
   _IntPair pair = {key, value};
   if (count == 0 || key > buf[count - 1].key) {
     m_Buffer.AppendBlock(&pair, sizeof(_IntPair));
     return;
   }
   int low = 0, high = count - 1;
   while (low <= high) {
     int mid = (low + high) / 2;
     if (buf[mid].key < key) {
       low = mid + 1;
     } else if (buf[mid].key > key) {
       high = mid - 1;
     } else {
       buf[mid].value = value;
       return;
     }
   }
   m_Buffer.InsertBlock(low * sizeof(_IntPair), &pair, sizeof(_IntPair));
 }
+
 FX_BOOL CFX_GlyphMap::Lookup(int key, int& value) {
   void* pResult = FXSYS_bsearch(&key, m_Buffer.GetBuffer(),
                                 m_Buffer.GetSize() / sizeof(_IntPair),
                                 sizeof(_IntPair), _CompareInt);
   if (!pResult) {
     return FALSE;
   }
   value = ((uint32_t*)pResult)[1];
   return TRUE;
 }
+
+CFX_CTTGSUBTable::CFX_CTTGSUBTable(void)
+    : m_bFeautureMapLoad(FALSE), loaded(false) {}
+
+CFX_CTTGSUBTable::CFX_CTTGSUBTable(FT_Bytes gsub)
+    : m_bFeautureMapLoad(FALSE), loaded(false) {
+  LoadGSUBTable(gsub);
+}
+
+CFX_CTTGSUBTable::~CFX_CTTGSUBTable() {}
+
+bool CFX_CTTGSUBTable::IsOk(void) const {
+  return loaded;
+}
+
 bool CFX_CTTGSUBTable::LoadGSUBTable(FT_Bytes gsub) {
   header.Version = gsub[0] << 24 | gsub[1] << 16 | gsub[2] << 8 | gsub[3];
   if (header.Version != 0x00010000) {
     return false;
   }
   header.ScriptList = gsub[4] << 8 | gsub[5];
   header.FeatureList = gsub[6] << 8 | gsub[7];
   header.LookupList = gsub[8] << 8 | gsub[9];
   return Parse(&gsub[header.ScriptList], &gsub[header.FeatureList],
                &gsub[header.LookupList]);
 }
+
 bool CFX_CTTGSUBTable::GetVerticalGlyph(uint32_t glyphnum,
                                         uint32_t* vglyphnum) {
   uint32_t tag[] = {
       (uint8_t)'v' << 24 | (uint8_t)'r' << 16 | (uint8_t)'t' << 8 |
           (uint8_t)'2',
       (uint8_t)'v' << 24 | (uint8_t)'e' << 16 | (uint8_t)'r' << 8 |
           (uint8_t)'t',
   };
   if (!m_bFeautureMapLoad) {
     for (int i = 0; i < ScriptList.ScriptCount; i++) {
@@ skipping 27 matching lines @@
     m_bFeautureMapLoad = TRUE;
   }
   for (const auto& pair : m_featureMap) {
     if (GetVerticalGlyphSub(glyphnum, vglyphnum,
                             &FeatureList.FeatureRecord[pair.second].Feature)) {
       return true;
     }
   }
   return false;
 }
+
 bool CFX_CTTGSUBTable::GetVerticalGlyphSub(uint32_t glyphnum,
                                            uint32_t* vglyphnum,
-                                           struct TFeature* Feature) {
+                                           struct TFeature* Feature) const {
   for (int i = 0; i < Feature->LookupCount; i++) {
     int index = Feature->LookupListIndex[i];
     if (index < 0 || LookupList.LookupCount < index) {
       continue;
     }
     if (LookupList.Lookup[index].LookupType == 1) {
       if (GetVerticalGlyphSub2(glyphnum, vglyphnum,
                                &LookupList.Lookup[index])) {
         return true;
       }
     }
   }
   return false;
 }
+
 bool CFX_CTTGSUBTable::GetVerticalGlyphSub2(uint32_t glyphnum,
                                             uint32_t* vglyphnum,
-                                            struct TLookup* Lookup) {
+                                            struct TLookup* Lookup) const {
   for (int i = 0; i < Lookup->SubTableCount; i++) {
     switch (Lookup->SubTable[i]->SubstFormat) {
       case 1: {
         TSingleSubstFormat1* tbl1 = (TSingleSubstFormat1*)Lookup->SubTable[i];
         if (GetCoverageIndex(tbl1->Coverage, glyphnum) >= 0) {
           *vglyphnum = glyphnum + tbl1->DeltaGlyphID;
           return true;
         }
         break;
       }
       case 2: {
         TSingleSubstFormat2* tbl2 = (TSingleSubstFormat2*)Lookup->SubTable[i];
         int index = -1;
         index = GetCoverageIndex(tbl2->Coverage, glyphnum);
         if (0 <= index && index < tbl2->GlyphCount) {
           *vglyphnum = tbl2->Substitute[index];
           return true;
         }
         break;
       }
     }
   }
   return false;
 }
+
 int CFX_CTTGSUBTable::GetCoverageIndex(struct TCoverageFormatBase* Coverage,
-                                       uint32_t g) {
+                                       uint32_t g) const {
   int i = 0;
   if (!Coverage) {
     return -1;
   }
   switch (Coverage->CoverageFormat) {
     case 1: {
       TCoverageFormat1* c1 = (TCoverageFormat1*)Coverage;
       for (i = 0; i < c1->GlyphCount; i++) {
         if ((uint32_t)c1->GlyphArray[i] == g) {
           return i;
         }
       }
       return -1;
     }
     case 2: {
       TCoverageFormat2* c2 = (TCoverageFormat2*)Coverage;
       for (i = 0; i < c2->RangeCount; i++) {
         uint32_t s = c2->RangeRecord[i].Start;
         uint32_t e = c2->RangeRecord[i].End;
         uint32_t si = c2->RangeRecord[i].StartCoverageIndex;
         if (s <= g && g <= e) {
           return si + g - s;
         }
       }
       return -1;
     }
   }
   return -1;
 }
+
+uint8_t CFX_CTTGSUBTable::GetUInt8(FT_Bytes& p) const {
+  uint8_t ret = p[0];
+  p += 1;
+  return ret;
+}
+
+int16_t CFX_CTTGSUBTable::GetInt16(FT_Bytes& p) const {
+  uint16_t ret = p[0] << 8 | p[1];
+  p += 2;
+  return *(int16_t*)&ret;
+}
+
+uint16_t CFX_CTTGSUBTable::GetUInt16(FT_Bytes& p) const {
+  uint16_t ret = p[0] << 8 | p[1];
+  p += 2;
+  return ret;
+}
+
+int32_t CFX_CTTGSUBTable::GetInt32(FT_Bytes& p) const {
+  uint32_t ret = p[0] << 24 | p[1] << 16 | p[2] << 8 | p[3];
+  p += 4;
+  return *(int32_t*)&ret;
+}
+
+uint32_t CFX_CTTGSUBTable::GetUInt32(FT_Bytes& p) const {
+  uint32_t ret = p[0] << 24 | p[1] << 16 | p[2] << 8 | p[3];
+  p += 4;
+  return ret;
+}
+
 bool CFX_CTTGSUBTable::Parse(FT_Bytes scriptlist,
                              FT_Bytes featurelist,
                              FT_Bytes lookuplist) {
   ParseScriptList(scriptlist, &ScriptList);
   ParseFeatureList(featurelist, &FeatureList);
   ParseLookupList(lookuplist, &LookupList);
   return true;
 }
+
 void CFX_CTTGSUBTable::ParseScriptList(FT_Bytes raw, struct TScriptList* rec) {
   int i;
   FT_Bytes sp = raw;
   rec->ScriptCount = GetUInt16(sp);
   if (rec->ScriptCount <= 0) {
     return;
   }
   rec->ScriptRecord = new struct TScriptRecord[rec->ScriptCount];
   for (i = 0; i < rec->ScriptCount; i++) {
     rec->ScriptRecord[i].ScriptTag = GetUInt32(sp);
     uint16_t offset = GetUInt16(sp);
     ParseScript(&raw[offset], &rec->ScriptRecord[i].Script);
   }
 }
+
 void CFX_CTTGSUBTable::ParseScript(FT_Bytes raw, struct TScript* rec) {
   int i;
   FT_Bytes sp = raw;
   rec->DefaultLangSys = GetUInt16(sp);
   rec->LangSysCount = GetUInt16(sp);
   if (rec->LangSysCount <= 0) {
     return;
   }
   rec->LangSysRecord = new struct TLangSysRecord[rec->LangSysCount];
   for (i = 0; i < rec->LangSysCount; i++) {
     rec->LangSysRecord[i].LangSysTag = GetUInt32(sp);
     uint16_t offset = GetUInt16(sp);
     ParseLangSys(&raw[offset], &rec->LangSysRecord[i].LangSys);
   }
 }
+
 void CFX_CTTGSUBTable::ParseLangSys(FT_Bytes raw, struct TLangSys* rec) {
   FT_Bytes sp = raw;
   rec->LookupOrder = GetUInt16(sp);
   rec->ReqFeatureIndex = GetUInt16(sp);
   rec->FeatureCount = GetUInt16(sp);
   if (rec->FeatureCount <= 0) {
     return;
   }
   rec->FeatureIndex = new uint16_t[rec->FeatureCount];
   FXSYS_memset(rec->FeatureIndex, 0, sizeof(uint16_t) * rec->FeatureCount);
   for (int i = 0; i < rec->FeatureCount; ++i) {
     rec->FeatureIndex[i] = GetUInt16(sp);
   }
 }
+
 void CFX_CTTGSUBTable::ParseFeatureList(FT_Bytes raw, TFeatureList* rec) {
   int i;
   FT_Bytes sp = raw;
   rec->FeatureCount = GetUInt16(sp);
   if (rec->FeatureCount <= 0) {
     return;
   }
   rec->FeatureRecord = new struct TFeatureRecord[rec->FeatureCount];
   for (i = 0; i < rec->FeatureCount; i++) {
     rec->FeatureRecord[i].FeatureTag = GetUInt32(sp);
     uint16_t offset = GetUInt16(sp);
     ParseFeature(&raw[offset], &rec->FeatureRecord[i].Feature);
   }
 }
+
 void CFX_CTTGSUBTable::ParseFeature(FT_Bytes raw, TFeature* rec) {
   int i;
   FT_Bytes sp = raw;
   rec->FeatureParams = GetUInt16(sp);
   rec->LookupCount = GetUInt16(sp);
   if (rec->LookupCount <= 0) {
     return;
   }
   rec->LookupListIndex = new uint16_t[rec->LookupCount];
   for (i = 0; i < rec->LookupCount; i++) {
     rec->LookupListIndex[i] = GetUInt16(sp);
   }
 }
+
 void CFX_CTTGSUBTable::ParseLookupList(FT_Bytes raw, TLookupList* rec) {
   int i;
   FT_Bytes sp = raw;
   rec->LookupCount = GetUInt16(sp);
   if (rec->LookupCount <= 0) {
     return;
   }
   rec->Lookup = new struct TLookup[rec->LookupCount];
   for (i = 0; i < rec->LookupCount; i++) {
     uint16_t offset = GetUInt16(sp);
     ParseLookup(&raw[offset], &rec->Lookup[i]);
   }
 }
+
 void CFX_CTTGSUBTable::ParseLookup(FT_Bytes raw, TLookup* rec) {
   int i;
   FT_Bytes sp = raw;
   rec->LookupType = GetUInt16(sp);
   rec->LookupFlag = GetUInt16(sp);
   rec->SubTableCount = GetUInt16(sp);
   if (rec->SubTableCount <= 0) {
     return;
   }
   rec->SubTable = new struct TSubTableBase*[rec->SubTableCount];
   for (i = 0; i < rec->SubTableCount; i++) {
     rec->SubTable[i] = nullptr;
   }
   if (rec->LookupType != 1) {
     return;
   }
   for (i = 0; i < rec->SubTableCount; i++) {
     uint16_t offset = GetUInt16(sp);
     ParseSingleSubst(&raw[offset], &rec->SubTable[i]);
   }
 }
+
 void CFX_CTTGSUBTable::ParseCoverage(FT_Bytes raw, TCoverageFormatBase** rec) {
   FT_Bytes sp = raw;
   uint16_t Format = GetUInt16(sp);
   switch (Format) {
     case 1:
       *rec = new TCoverageFormat1();
       ParseCoverageFormat1(raw, (TCoverageFormat1*)*rec);
       break;
     case 2:
       *rec = new TCoverageFormat2();
       ParseCoverageFormat2(raw, (TCoverageFormat2*)*rec);
       break;
   }
 }
+
 void CFX_CTTGSUBTable::ParseCoverageFormat1(FT_Bytes raw,
                                             TCoverageFormat1* rec) {
   int i;
   FT_Bytes sp = raw;
   GetUInt16(sp);
   rec->GlyphCount = GetUInt16(sp);
   if (rec->GlyphCount <= 0) {
     return;
   }
   rec->GlyphArray = new uint16_t[rec->GlyphCount];
   for (i = 0; i < rec->GlyphCount; i++) {
     rec->GlyphArray[i] = GetUInt16(sp);
   }
 }
+
 void CFX_CTTGSUBTable::ParseCoverageFormat2(FT_Bytes raw,
                                             TCoverageFormat2* rec) {
   int i;
   FT_Bytes sp = raw;
   GetUInt16(sp);
   rec->RangeCount = GetUInt16(sp);
   if (rec->RangeCount <= 0) {
     return;
   }
   rec->RangeRecord = new TRangeRecord[rec->RangeCount];
   for (i = 0; i < rec->RangeCount; i++) {
     rec->RangeRecord[i].Start = GetUInt16(sp);
     rec->RangeRecord[i].End = GetUInt16(sp);
     rec->RangeRecord[i].StartCoverageIndex = GetUInt16(sp);
   }
 }
+
 void CFX_CTTGSUBTable::ParseSingleSubst(FT_Bytes raw, TSubTableBase** rec) {
   FT_Bytes sp = raw;
   uint16_t Format = GetUInt16(sp);
   switch (Format) {
     case 1:
       *rec = new TSingleSubstFormat1();
       ParseSingleSubstFormat1(raw, (TSingleSubstFormat1*)*rec);
       break;
     case 2:
       *rec = new TSingleSubstFormat2();
       ParseSingleSubstFormat2(raw, (TSingleSubstFormat2*)*rec);
       break;
   }
 }
+
 void CFX_CTTGSUBTable::ParseSingleSubstFormat1(FT_Bytes raw,
                                                TSingleSubstFormat1* rec) {
   FT_Bytes sp = raw;
   GetUInt16(sp);
   uint16_t offset = GetUInt16(sp);
   ParseCoverage(&raw[offset], &rec->Coverage);
   rec->DeltaGlyphID = GetInt16(sp);
 }
+
 void CFX_CTTGSUBTable::ParseSingleSubstFormat2(FT_Bytes raw,
                                                TSingleSubstFormat2* rec) {
   int i;
   FT_Bytes sp = raw;
   GetUInt16(sp);
   uint16_t offset = GetUInt16(sp);
   ParseCoverage(&raw[offset], &rec->Coverage);
   rec->GlyphCount = GetUInt16(sp);
   if (rec->GlyphCount <= 0) {
     return;
   }
   rec->Substitute = new uint16_t[rec->GlyphCount];
   for (i = 0; i < rec->GlyphCount; i++) {
     rec->Substitute[i] = GetUInt16(sp);
   }
 }
+
+CFX_CTTGSUBTable::TCoverageFormat1::TCoverageFormat1()
+    : GlyphCount(0), GlyphArray(nullptr) {
+  CoverageFormat = 1;
+}
+
+CFX_CTTGSUBTable::TCoverageFormat1::~TCoverageFormat1() {
+  delete[] GlyphArray;
+}
+
+CFX_CTTGSUBTable::TRangeRecord::TRangeRecord()
+    : Start(0), End(0), StartCoverageIndex(0) {}
+
+CFX_CTTGSUBTable::TCoverageFormat2::TCoverageFormat2()
+    : RangeCount(0), RangeRecord(nullptr) {
+  CoverageFormat = 2;
+}
+
+CFX_CTTGSUBTable::TCoverageFormat2::~TCoverageFormat2() {
+  delete[] RangeRecord;
+}
+
+CFX_CTTGSUBTable::TClassDefFormat1::TClassDefFormat1()
+    : StartGlyph(0), GlyphCount(0), ClassValueArray(nullptr) {
+  ClassFormat = 1;
+}
+
+CFX_CTTGSUBTable::TClassDefFormat1::~TClassDefFormat1() {
+  delete[] ClassValueArray;
+}
+
+CFX_CTTGSUBTable::TClassDefFormat2::TClassDefFormat2()
+    : ClassRangeCount(0), ClassRangeRecord(nullptr) {
+  ClassFormat = 2;
+}
+
+CFX_CTTGSUBTable::TClassDefFormat2::~TClassDefFormat2() {
+  delete[] ClassRangeRecord;
+}
+
+CFX_CTTGSUBTable::TSingleSubstFormat1::TSingleSubstFormat1()
+    : Coverage(nullptr), DeltaGlyphID(0) {
+  SubstFormat = 1;
+}
+
+CFX_CTTGSUBTable::TSingleSubstFormat1::~TSingleSubstFormat1() {
+  delete Coverage;
+}
+
+CFX_CTTGSUBTable::TSingleSubstFormat2::TSingleSubstFormat2()
+    : Coverage(nullptr), GlyphCount(0), Substitute(nullptr) {
+  SubstFormat = 2;
+}
+
+CFX_CTTGSUBTable::TSingleSubstFormat2::~TSingleSubstFormat2() {
+  delete Coverage;
+  delete[] Substitute;
+}
+
+CFX_CTTGSUBTable::TLookup::TLookup()
+    : LookupType(0), LookupFlag(0), SubTableCount(0), SubTable(nullptr) {}
+
+CFX_CTTGSUBTable::TLookup::~TLookup() {
+  if (SubTable) {
+    for (int i = 0; i < SubTableCount; ++i)
+      delete SubTable[i];
+    delete[] SubTable;
+  }
+}