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/*
* 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 "subtly/subsetter.h"
#include <stdio.h>
#include "sfntly/font.h"
#include "sfntly/font_factory.h"
#include "sfntly/tag.h"
#include "subtly/character_predicate.h"
#include "subtly/font_assembler.h"
#include "subtly/font_info.h"
#include "subtly/utils.h"
namespace subtly {
using namespace sfntly;
/******************************************************************************
* Subsetter class
******************************************************************************/
Subsetter::Subsetter(Font* font, CharacterPredicate* predicate)
: font_(font),
predicate_(predicate) {
}
Subsetter::Subsetter(const char* font_path, CharacterPredicate* predicate)
: predicate_(predicate) {
font_.Attach(LoadFont(font_path));
}
CALLER_ATTACH Font* Subsetter::Subset() {
Ptr<FontSourcedInfoBuilder> info_builder =
new FontSourcedInfoBuilder(font_, 0, predicate_);
Ptr<FontInfo> font_info;
font_info.Attach(info_builder->GetFontInfo());
if (!font_info) {
#if defined (SUBTLY_DEBUG)
fprintf(stderr,
"Couldn't create font info. No subset will be generated.\n");
#endif
return NULL;
}
IntegerSet* table_blacklist = new IntegerSet;
table_blacklist->insert(Tag::DSIG);
Ptr<FontAssembler> font_assembler = new FontAssembler(font_info,
table_blacklist);
Ptr<Font> font_subset;
font_subset.Attach(font_assembler->Assemble());
delete table_blacklist;
return font_subset.Detach();
}
}
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