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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 <stdio.h>
#include <stdlib.h>
#include <map>
#include <utility>
#include "sfntly/font.h"
#include "subtly/character_predicate.h"
#include "subtly/stats.h"
#include "subtly/subsetter.h"
#include "subtly/utils.h"
using namespace subtly;
void PrintUsage(const char* program_name) {
fprintf(stdout, "Usage: %s <input_font_file> <output_font_file>"
"<start_char> <end_char>\n", program_name);
}
int main(int argc, const char** argv) {
const char* program_name = argv[0];
if (argc < 5) {
PrintUsage(program_name);
exit(1);
}
const char* input_font_path = argv[1];
const char* output_font_path = argv[2];
FontPtr font;
font.Attach(subtly::LoadFont(input_font_path));
if (font->num_tables() == 0) {
fprintf(stderr, "Could not load font %s.\n", input_font_path);
exit(1);
}
const char* start_char = argv[3];
const char* end_char = argv[4];
if (start_char[1] != 0) {
fprintf(stderr, "Start character %c invalid.\n", start_char[0]);
exit(1);
}
if (end_char[1] != 0) {
fprintf(stderr, "Start character %c invalid.\n", end_char[0]);
exit(1);
}
int32_t original_size = TotalFontSize(font);
Ptr<CharacterPredicate> range_predicate =
new AcceptRange(start_char[0], end_char[0]);
Ptr<Subsetter> subsetter = new Subsetter(font, range_predicate);
Ptr<Font> new_font;
new_font.Attach(subsetter->Subset());
if (!new_font) {
fprintf(stdout, "Cannot create subset.\n");
return 0;
}
subtly::SerializeFont(output_font_path, new_font);
subtly::PrintComparison(stdout, font, new_font);
int32_t new_size = TotalFontSize(new_font);
fprintf(stdout, "Went from %d to %d: %lf%% of original\n",
original_size, new_size,
static_cast<double>(new_size) / original_size * 100);
return 0;
}
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