Merge from Chromium at DEPS revision 237746android-4.4w_r1android-4.4.4_r2.0.1android-4.4.4_r2android-4.4.4_r1.0.1android-4.4.4_r1android-4.4.3_r1.1.0.1android-4.4.3_r1.1android-4.4.3_r1.0.1android-4.4.3_r1kitkat-wearkitkat-mr2.2-releasekitkat-mr2.1-releasekitkat-mr2-releasekitkat-devidea133-weekly-release

This commit was generated by merge_to_master.py.

Change-Id: If4ff821474cc985d0bc16bc22c8180c8bec48014

1 files changed, 246 insertions, 0 deletions

diff --git a/sfntly/table/truetype/loca_table.cc b/sfntly/table/truetype/loca_table.cc
new file mode 100644
index 0000000..c692155
--- /dev/null
+++ b/sfntly/table/truetype/loca_table.cc
@@ -0,0 +1,246 @@
+/*
+ * Copyright 2011 Google Inc. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "sfntly/table/truetype/loca_table.h"
+#include "sfntly/port/exception_type.h"
+
+namespace sfntly {
+/******************************************************************************
+ * LocaTable class
+ ******************************************************************************/
+LocaTable::~LocaTable() {}
+
+int32_t LocaTable::GlyphOffset(int32_t glyph_id) {
+  if (glyph_id < 0 || glyph_id >= num_glyphs_) {
+#if !defined (SFNTLY_NO_EXCEPTION)
+    throw IndexOutOfBoundException("Glyph ID is out of bounds.");
+#endif
+    return 0;
+  }
+  return Loca(glyph_id);
+}
+
+int32_t LocaTable::GlyphLength(int32_t glyph_id) {
+  if (glyph_id < 0 || glyph_id >= num_glyphs_) {
+#if !defined (SFNTLY_NO_EXCEPTION)
+    throw IndexOutOfBoundException("Glyph ID is out of bounds.");
+#endif
+    return 0;
+  }
+  return Loca(glyph_id + 1) - Loca(glyph_id);
+}
+
+int32_t LocaTable::NumLocas() {
+  return num_glyphs_ + 1;
+}
+
+int32_t LocaTable::Loca(int32_t index) {
+  if (index > num_glyphs_) {
+#if !defined (SFNTLY_NO_EXCEPTION)
+    throw IndexOutOfBoundException();
+#endif
+    return 0;
+  }
+  if (format_version_ == IndexToLocFormat::kShortOffset) {
+    return 2 * data_->ReadUShort(index * DataSize::kUSHORT);
+  }
+  return data_->ReadULongAsInt(index * DataSize::kULONG);
+}
+
+LocaTable::LocaTable(Header* header,
+                     ReadableFontData* data,
+                     int32_t format_version,
+                     int32_t num_glyphs)
+    : Table(header, data),
+      format_version_(format_version),
+      num_glyphs_(num_glyphs) {
+}
+
+/******************************************************************************
+ * LocaTable::Iterator class
+ ******************************************************************************/
+LocaTable::LocaIterator::LocaIterator(LocaTable* table)
+    : PODIterator<int32_t, LocaTable>(table), index_(-1) {
+}
+
+bool LocaTable::LocaIterator::HasNext() {
+  return index_ <= container()->num_glyphs_;
+}
+
+int32_t LocaTable::LocaIterator::Next() {
+  return container()->Loca(index_++);
+}
+
+/******************************************************************************
+ * LocaTable::Builder class
+ ******************************************************************************/
+LocaTable::Builder::Builder(Header* header, WritableFontData* data)
+    : Table::Builder(header, data),
+      format_version_(IndexToLocFormat::kLongOffset),
+      num_glyphs_(-1) {
+}
+
+LocaTable::Builder::Builder(Header* header, ReadableFontData* data)
+    : Table::Builder(header, data),
+      format_version_(IndexToLocFormat::kLongOffset),
+      num_glyphs_(-1) {
+}
+
+LocaTable::Builder::~Builder() {}
+
+CALLER_ATTACH
+LocaTable::Builder* LocaTable::Builder::CreateBuilder(Header* header,
+                                                      WritableFontData* data) {
+  Ptr<LocaTable::Builder> builder;
+  builder = new LocaTable::Builder(header, data);
+  return builder.Detach();
+}
+
+IntegerList* LocaTable::Builder::LocaList() {
+  return GetLocaList();
+}
+
+void LocaTable::Builder::SetLocaList(IntegerList* list) {
+  loca_.clear();
+  if (list) {
+    loca_ = *list;
+    set_model_changed();
+  }
+}
+
+int32_t LocaTable::Builder::GlyphOffset(int32_t glyph_id) {
+  if (CheckGlyphRange(glyph_id) == -1) {
+    return 0;
+  }
+  return GetLocaList()->at(glyph_id);
+}
+
+int32_t LocaTable::Builder::GlyphLength(int32_t glyph_id) {
+  if (CheckGlyphRange(glyph_id) == -1) {
+    return 0;
+  }
+  return GetLocaList()->at(glyph_id + 1) - GetLocaList()->at(glyph_id);
+}
+
+void LocaTable::Builder::SetNumGlyphs(int32_t num_glyphs) {
+  num_glyphs_ = num_glyphs;
+}
+
+int32_t LocaTable::Builder::NumGlyphs() {
+  return LastGlyphIndex() - 1;
+}
+
+void LocaTable::Builder::Revert() {
+  loca_.clear();
+  set_model_changed(false);
+}
+
+int32_t LocaTable::Builder::NumLocas() {
+  return GetLocaList()->size();
+}
+
+int32_t LocaTable::Builder::Loca(int32_t index) {
+  return GetLocaList()->at(index);
+}
+
+CALLER_ATTACH
+FontDataTable* LocaTable::Builder::SubBuildTable(ReadableFontData* data) {
+  FontDataTablePtr table =
+      new LocaTable(header(), data, format_version_, num_glyphs_);
+  return table.Detach();
+}
+
+void LocaTable::Builder::SubDataSet() {
+  Initialize(InternalReadData());
+}
+
+int32_t LocaTable::Builder::SubDataSizeToSerialize() {
+  if (loca_.empty()) {
+    return 0;
+  }
+  if (format_version_ == IndexToLocFormat::kLongOffset) {
+    return loca_.size() * DataSize::kULONG;
+  }
+  return loca_.size() * DataSize::kUSHORT;
+}
+
+bool LocaTable::Builder::SubReadyToSerialize() {
+  return !loca_.empty();
+}
+
+int32_t LocaTable::Builder::SubSerialize(WritableFontData* new_data) {
+  int32_t size = 0;
+  for (IntegerList::iterator l = loca_.begin(), end = loca_.end();
+                             l != end; ++l) {
+    if (format_version_ == IndexToLocFormat::kLongOffset) {
+      size += new_data->WriteULong(size, *l);
+    } else {
+      size += new_data->WriteUShort(size, *l / 2);
+    }
+  }
+  num_glyphs_ = loca_.size() - 1;
+  return size;
+}
+
+void LocaTable::Builder::Initialize(ReadableFontData* data) {
+  ClearLoca(false);
+  if (data) {
+    if (NumGlyphs() < 0) {
+#if !defined (SFNTLY_NO_EXCEPTION)
+      throw IllegalStateException("numglyphs not set on LocaTable Builder.");
+#endif
+      return;
+    }
+    LocaTablePtr table =
+        new LocaTable(header(), data, format_version_, num_glyphs_);
+    Ptr<LocaTable::LocaIterator> loca_iter =
+        new LocaTable::LocaIterator(table);
+    while (loca_iter->HasNext()) {
+      loca_.push_back(loca_iter->Next());
+    }
+  }
+}
+
+int32_t LocaTable::Builder::CheckGlyphRange(int32_t glyph_id) {
+  if (glyph_id < 0 || glyph_id > LastGlyphIndex()) {
+#if !defined (SFNTLY_NO_EXCEPTION)
+    throw IndexOutOfBoundsException("Glyph ID is outside of the allowed range");
+#endif
+    return -1;
+  }
+  return glyph_id;
+}
+
+int32_t LocaTable::Builder::LastGlyphIndex() {
+  return !loca_.empty() ? loca_.size() - 2 : num_glyphs_ - 1;
+}
+
+IntegerList* LocaTable::Builder::GetLocaList() {
+  if (loca_.empty()) {
+    Initialize(InternalReadData());
+    set_model_changed();
+  }
+  return &loca_;
+}
+
+void LocaTable::Builder::ClearLoca(bool nullify) {
+  // Note: in C++ port, nullify is not used at all.
+  UNREFERENCED_PARAMETER(nullify);
+  loca_.clear();
+  set_model_changed(false);
+}
+
+}  // namespace sfntly