1 files changed, 102 insertions, 0 deletions
diff --git a/sfntly/tools/subsetter/subsetter.cc b/sfntly/tools/subsetter/subsetter.cc
new file mode 100644
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+++ b/sfntly/tools/subsetter/subsetter.cc
@@ -0,0 +1,102 @@
+/*
+ * 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/tools/subsetter/subsetter.h"
+
+#include <algorithm>
+#include <iterator>
+
+#include "sfntly/tools/subsetter/glyph_table_subsetter.h"
+
+namespace sfntly {
+
+Subsetter::Subsetter(Font* font, FontFactory* font_factory) {
+  font_ = font;
+  font_factory_ = font_factory;
+  TableSubsetterPtr subsetter = new GlyphTableSubsetter();
+  // TODO(arthurhsu): IMPLEMENT: CMap table subsetter
+  table_subsetters_.push_back(subsetter);
+}
+
+Subsetter::~Subsetter() {
+  font_factory_.Release();
+  font_.Release();
+  table_subsetters_.clear();
+}
+
+void Subsetter::SetGlyphs(IntegerList* glyphs) {
+  new_to_old_glyphs_ = *glyphs;
+}
+
+void Subsetter::SetCMaps(CMapIdList* cmap_ids, int32_t number) {
+  UNREFERENCED_PARAMETER(cmap_ids);
+  UNREFERENCED_PARAMETER(number);
+  // TODO(arthurhsu): IMPLEMENT
+}
+
+void Subsetter::SetRemoveTables(IntegerSet* remove_tables) {
+  remove_tables_ = *remove_tables;
+}
+
+CALLER_ATTACH Font::Builder* Subsetter::Subset() {
+  FontBuilderPtr font_builder;
+  font_builder.Attach(font_factory_->NewFontBuilder());
+
+  IntegerSet table_tags;
+  for (TableMap::const_iterator i = font_->GetTableMap()->begin(),
+                                e = font_->GetTableMap()->end(); i != e; ++i) {
+    table_tags.insert(i->first);
+  }
+  if (!remove_tables_.empty()) {
+    IntegerSet result;
+    std::set_difference(table_tags.begin(), table_tags.end(),
+                        remove_tables_.begin(), remove_tables_.end(),
+                        std::inserter(result, result.end()));
+    table_tags = result;
+  }
+  for (TableSubsetterList::iterator
+           table_subsetter = table_subsetters_.begin(),
+           table_subsetter_end = table_subsetters_.end();
+           table_subsetter != table_subsetter_end; ++table_subsetter) {
+    bool handled = (*table_subsetter)->Subset(this, font_, font_builder);
+    if (handled) {
+      IntegerSet* handled_tags = (*table_subsetter)->TagsHandled();
+      IntegerSet result;
+      std::set_difference(table_tags.begin(), table_tags.end(),
+                          handled_tags->begin(), handled_tags->end(),
+                          std::inserter(result, result.end()));
+      table_tags = result;
+    }
+  }
+  for (IntegerSet::iterator tag = table_tags.begin(),
+                            tag_end = table_tags.end(); tag != tag_end; ++tag) {
+    Table* table = font_->GetTable(*tag);
+    if (table) {
+      font_builder->NewTableBuilder(*tag, table->ReadFontData());
+    }
+  }
+  return font_builder.Detach();
+}
+
+IntegerList* Subsetter::GlyphPermutationTable() {
+  return &new_to_old_glyphs_;
+}
+
+CMapIdList* Subsetter::CMapId() {
+  return &cmap_ids_;
+}
+
+}  // namespace sfntly