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 19 #include "sfntly/font.h" 20 #include "sfntly/table/table.h" 21 #include "sfntly/tag.h" 22 #include "subtly/stats.h" 23 24 namespace subtly { 25 using namespace sfntly; 26 27 int32_t TotalFontSize(Font* font) { 28 int32_t size = 0; 29 const TableMap* table_map = font->GetTableMap(); 30 for (TableMap::const_iterator it = table_map->begin(), 31 e = table_map->end(); it != e; ++it) { 32 size += it->second->DataLength(); 33 } 34 return size; 35 } 36 37 double TableSizePercent(Font* font, int32_t tag) { 38 TablePtr table = font->GetTable(tag); 39 return static_cast<double>(table->DataLength()) / TotalFontSize(font) * 100; 40 } 41 42 void PrintComparison(FILE* out, Font* font, Font* new_font) { 43 fprintf(out, "====== Table Comparison (original v. subset) ======\n"); 44 const TableMap* tables = font->GetTableMap(); 45 for (TableMap::const_iterator it = tables->begin(), 46 e = tables->end(); it != e; ++it) { 47 char *name = TagToString(it->first); 48 int32_t size = it->second->DataLength(); 49 fprintf(out, "-- %s: %d (%lf%%) ", name, size, 50 TableSizePercent(font, it->first)); 51 delete[] name; 52 53 Ptr<FontDataTable> new_table = new_font->GetTable(it->first); 54 int32_t new_size = 0; 55 double size_percent = 0; 56 if (new_table) { 57 new_size = new_table->DataLength(); 58 size_percent = subtly::TableSizePercent(new_font, it->first); 59 } 60 61 if (new_size == size) { 62 fprintf(out, "| same size\n"); 63 } else { 64 fprintf(out, "-> %d (%lf%%) | %lf%% of original\n", new_size, 65 size_percent, static_cast<double>(new_size) / size * 100); 66 } 67 } 68 } 69 70 void PrintStats(FILE* out, Font* font) { 71 fprintf(out, "====== Table Stats ======\n"); 72 const TableMap* tables = font->GetTableMap(); 73 for (TableMap::const_iterator it = tables->begin(), 74 e = tables->end(); it != e; ++it) { 75 char *name = TagToString(it->first); 76 int32_t size = it->second->DataLength(); 77 fprintf(out, "-- %s: %d (%lf%%)\n", name, size, 78 TableSizePercent(font, it->first)); 79 delete[] name; 80 } 81 } 82 } 83
