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
TotalFontSize(Font * font)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
TableSizePercent(Font * font,int32_t tag)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
PrintComparison(FILE * out,Font * font,Font * new_font)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
PrintStats(FILE * out,Font * font)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