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 // Remove VC++ nag on fopen.
18 #define _CRT_SECURE_NO_WARNINGS
19
20 #include "sample/subsetter/subset_util.h"
21
22 #include <stdio.h>
23
24 #include <vector>
25 #include <memory>
26
27 #include "sfntly/font.h"
28 #include "sfntly/data/memory_byte_array.h"
29 #include "sfntly/port/memory_output_stream.h"
30 #include "sfntly/port/type.h"
31 #include "sfntly/tag.h"
32 #include "sfntly/tools/subsetter/subsetter.h"
33
34 namespace sfntly {
35
SubsetUtil()36 SubsetUtil::SubsetUtil() {
37 }
38
~SubsetUtil()39 SubsetUtil::~SubsetUtil() {
40 }
41
Subset(const char * input_file_path,const char * output_file_path)42 void SubsetUtil::Subset(const char *input_file_path,
43 const char *output_file_path) {
44 UNREFERENCED_PARAMETER(output_file_path);
45 ByteVector input_buffer;
46 FILE* input_file = fopen(input_file_path, "rb");
47 if (input_file == NULL) {
48 fprintf(stderr, "file not found\n");
49 return;
50 }
51 fseek(input_file, 0, SEEK_END);
52 size_t file_size = ftell(input_file);
53 fseek(input_file, 0, SEEK_SET);
54 input_buffer.resize(file_size);
55 size_t bytes_read = fread(&(input_buffer[0]), 1, file_size, input_file);
56 UNREFERENCED_PARAMETER(bytes_read);
57 fclose(input_file);
58
59 FontFactoryPtr factory;
60 factory.Attach(FontFactory::GetInstance());
61
62 FontArray font_array;
63 factory->LoadFonts(&input_buffer, &font_array);
64 if (font_array.empty() || font_array[0] == NULL)
65 return;
66
67 IntegerList glyphs;
68 for (int32_t i = 0; i < 10; i++) {
69 glyphs.push_back(i);
70 }
71 glyphs.push_back(11);
72 glyphs.push_back(10);
73
74 Ptr<Subsetter> subsetter = new Subsetter(font_array[0], factory);
75 subsetter->SetGlyphs(&glyphs);
76 IntegerSet remove_tables;
77 remove_tables.insert(Tag::DSIG);
78 subsetter->SetRemoveTables(&remove_tables);
79
80 FontBuilderPtr font_builder;
81 font_builder.Attach(subsetter->Subset());
82
83 FontPtr new_font;
84 new_font.Attach(font_builder->Build());
85
86 // TODO(arthurhsu): glyph renumbering/Loca table
87 // TODO(arthurhsu): alter CMaps
88
89 MemoryOutputStream output_stream;
90 factory->SerializeFont(new_font, &output_stream);
91
92 FILE* output_file = fopen(output_file_path, "wb");
93 fwrite(output_stream.Get(), 1, output_stream.Size(), output_file);
94 fflush(output_file);
95 fclose(output_file);
96 }
97
98 } // namespace sfntly
99