1 /* 2 * Copyright 2011 Google Inc. All Rights Reserved. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include <stdio.h> 18 #include <stdlib.h> 19 20 #include <map> 21 #include <utility> 22 23 #include "sfntly/font.h" 24 #include "subtly/character_predicate.h" 25 #include "subtly/stats.h" 26 #include "subtly/subsetter.h" 27 #include "subtly/utils.h" 28 29 using namespace subtly; 30 31 void PrintUsage(const char* program_name) { 32 fprintf(stdout, "Usage: %s <input_font_file> <output_font_file>" 33 "<start_char> <end_char>\n", program_name); 34 } 35 36 int main(int argc, const char** argv) { 37 const char* program_name = argv[0]; 38 if (argc < 5) { 39 PrintUsage(program_name); 40 exit(1); 41 } 42 43 const char* input_font_path = argv[1]; 44 const char* output_font_path = argv[2]; 45 FontPtr font; 46 font.Attach(subtly::LoadFont(input_font_path)); 47 if (font->num_tables() == 0) { 48 fprintf(stderr, "Could not load font %s.\n", input_font_path); 49 exit(1); 50 } 51 52 const char* start_char = argv[3]; 53 const char* end_char = argv[4]; 54 if (start_char[1] != 0) { 55 fprintf(stderr, "Start character %c invalid.\n", start_char[0]); 56 exit(1); 57 } 58 if (end_char[1] != 0) { 59 fprintf(stderr, "Start character %c invalid.\n", end_char[0]); 60 exit(1); 61 } 62 int32_t original_size = TotalFontSize(font); 63 64 65 Ptr<CharacterPredicate> range_predicate = 66 new AcceptRange(start_char[0], end_char[0]); 67 Ptr<Subsetter> subsetter = new Subsetter(font, range_predicate); 68 Ptr<Font> new_font; 69 new_font.Attach(subsetter->Subset()); 70 if (!new_font) { 71 fprintf(stdout, "Cannot create subset.\n"); 72 return 0; 73 } 74 75 subtly::SerializeFont(output_font_path, new_font); 76 subtly::PrintComparison(stdout, font, new_font); 77 int32_t new_size = TotalFontSize(new_font); 78 fprintf(stdout, "Went from %d to %d: %lf%% of original\n", 79 original_size, new_size, 80 static_cast<double>(new_size) / original_size * 100); 81 return 0; 82 } 83
