Move core/src/ up to core/.

This CL moves the core/src/ files up to core/ and fixes up the include guards,
includes and build files.

R=tsepez@chromium.org

Review URL: https://codereview.chromium.org/1800523005 .

1 files changed, 415 insertions, 0 deletions

diff --git a/core/fpdfapi/fpdf_font/ttgsubtable.cpp b/core/fpdfapi/fpdf_font/ttgsubtable.cpp
new file mode 100644
index 0000000000..24825ec14e
--- /dev/null
+++ b/core/fpdfapi/fpdf_font/ttgsubtable.cpp
@@ -0,0 +1,415 @@
+// 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/include/fxge/fx_freetype.h"
+#include "core/include/fxge/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 (*(FX_DWORD*)p1) - (*(FX_DWORD*)p2);
+}
+};
+struct _IntPair {
+  int32_t key;
+  int32_t value;
+};
+void CFX_GlyphMap::SetAt(int key, int value) {
+  FX_DWORD 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 = ((FX_DWORD*)pResult)[1];
+  return TRUE;
+}
+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++) {
+      for (int j = 0; j < (ScriptList.ScriptRecord + i)->Script.LangSysCount;
+           ++j) {
+        for (int k = 0;
+             k < ((ScriptList.ScriptRecord + i)->Script.LangSysRecord + j)
+                     ->LangSys.FeatureCount;
+             ++k) {
+          FX_DWORD index =
+              *(((ScriptList.ScriptRecord + i)->Script.LangSysRecord + j)
+                    ->LangSys.FeatureIndex +
+                k);
+          if (FeatureList.FeatureRecord[index].FeatureTag == tag[0] ||
+              FeatureList.FeatureRecord[index].FeatureTag == tag[1]) {
+            if (!pdfium::ContainsKey(m_featureMap, index)) {
+              m_featureMap[index] = index;
+            }
+          }
+        }
+      }
+    }
+    if (m_featureMap.empty()) {
+      for (int i = 0; i < FeatureList.FeatureCount; i++) {
+        if (FeatureList.FeatureRecord[i].FeatureTag == tag[0] ||
+            FeatureList.FeatureRecord[i].FeatureTag == tag[1]) {
+          m_featureMap[i] = i;
+        }
+      }
+    }
+    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) {
+  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) {
+  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) {
+  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;
+}
+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] = NULL;
+  }
+  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);
+  }
+}
+FX_BOOL CFX_GSUBTable::GetVerticalGlyph(FX_DWORD glyphnum,
+                                        FX_DWORD* vglyphnum) {
+  return m_GsubImp.GetVerticalGlyph(glyphnum, vglyphnum);
+}
+// static
+IFX_GSUBTable* IFX_GSUBTable::Create(CFX_Font* pFont) {
+  if (!pFont) {
+    return NULL;
+  }
+  if (!pFont->GetSubData()) {
+    unsigned long length = 0;
+    int error = FXFT_Load_Sfnt_Table(
+        pFont->GetFace(), FT_MAKE_TAG('G', 'S', 'U', 'B'), 0, NULL, &length);
+    if (!error) {
+      pFont->SetSubData(FX_Alloc(uint8_t, length));
+    }
+    if (!pFont->GetSubData()) {
+      return NULL;
+    }
+  }
+  int error =
+      FXFT_Load_Sfnt_Table(pFont->GetFace(), FT_MAKE_TAG('G', 'S', 'U', 'B'), 0,
+                           pFont->GetSubData(), NULL);
+  if (!error && pFont->GetSubData()) {
+    std::unique_ptr<CFX_GSUBTable> pGsubTable(new CFX_GSUBTable);
+    if (pGsubTable->m_GsubImp.LoadGSUBTable((FT_Bytes)pFont->GetSubData())) {
+      return pGsubTable.release();
+    }
+  }
+  return NULL;
+}