1 /*
2 * Copyright (C) 2015 The Android Open Source Project
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 #define LOG_TAG "Minikin"
18
19 #include <libxml/tree.h>
20 #include <log/log.h>
21 #include <unistd.h>
22
23 #include "minikin/FontCollection.h"
24 #include "minikin/FontFamily.h"
25 #include "minikin/LocaleList.h"
26
27 #include "FontTestUtils.h"
28 #include "FreeTypeMinikinFontForTest.h"
29 #include "LocaleListCache.h"
30 #include "MinikinInternal.h"
31
32 namespace minikin {
33
34 namespace {
xmlTrim(const std::string & in)35 std::string xmlTrim(const std::string& in) {
36 if (in.empty()) {
37 return in;
38 }
39 const char XML_SPACES[] = "\u0020\u000D\u000A\u0009";
40 const size_t start = in.find_first_not_of(XML_SPACES); // inclusive
41 const size_t end = in.find_last_not_of(XML_SPACES); // inclusive
42 MINIKIN_ASSERT(start != std::string::npos, "Not a valid file name \"%s\"", in.c_str());
43 MINIKIN_ASSERT(end != std::string::npos, "Not a valid file name \"%s\"", in.c_str());
44 return in.substr(start, end - start + 1 /* +1 since end is inclusive */);
45 }
46
47 } // namespace
48
getFontFamilies(const std::string & fontDir,const std::string & xmlPath)49 std::vector<std::shared_ptr<FontFamily>> getFontFamilies(const std::string& fontDir,
50 const std::string& xmlPath) {
51 xmlDoc* doc = xmlReadFile(xmlPath.c_str(), NULL, 0);
52 xmlNode* familySet = xmlDocGetRootElement(doc);
53
54 std::vector<std::shared_ptr<FontFamily>> families;
55 for (xmlNode* familyNode = familySet->children; familyNode; familyNode = familyNode->next) {
56 if (xmlStrcmp(familyNode->name, (const xmlChar*)"family") != 0) {
57 continue;
58 }
59
60 xmlChar* variantXmlch = xmlGetProp(familyNode, (const xmlChar*)"variant");
61 FamilyVariant variant = FamilyVariant::DEFAULT;
62 if (variantXmlch) {
63 if (xmlStrcmp(variantXmlch, (const xmlChar*)"elegant") == 0) {
64 variant = FamilyVariant::ELEGANT;
65 } else if (xmlStrcmp(variantXmlch, (const xmlChar*)"compact") == 0) {
66 variant = FamilyVariant::COMPACT;
67 }
68 }
69
70 std::vector<std::shared_ptr<Font>> fonts;
71 for (xmlNode* fontNode = familyNode->children; fontNode; fontNode = fontNode->next) {
72 if (xmlStrcmp(fontNode->name, (const xmlChar*)"font") != 0) {
73 continue;
74 }
75
76 uint16_t weight = atoi((const char*)(xmlGetProp(fontNode, (const xmlChar*)"weight")));
77 FontStyle::Slant italic = static_cast<FontStyle::Slant>(
78 xmlStrcmp(xmlGetProp(fontNode, (const xmlChar*)"style"),
79 (const xmlChar*)"italic") == 0);
80 xmlChar* index = xmlGetProp(familyNode, (const xmlChar*)"index");
81
82 xmlChar* fontFileName = xmlNodeListGetString(doc, fontNode->xmlChildrenNode, 1);
83 const std::string fontPath = xmlTrim(fontDir + std::string((const char*)fontFileName));
84 xmlFree(fontFileName);
85
86 // TODO: Support font variation axis.
87
88 if (access(fontPath.c_str(), R_OK) != 0) {
89 ALOGW("%s is not found.", fontPath.c_str());
90 continue;
91 }
92
93 FontStyle style(weight, italic);
94 if (index == nullptr) {
95 std::shared_ptr<MinikinFont> minikinFont =
96 std::make_shared<FreeTypeMinikinFontForTest>(fontPath);
97 fonts.push_back(Font::Builder(minikinFont).setStyle(style).build());
98 } else {
99 std::shared_ptr<MinikinFont> minikinFont =
100 std::make_shared<FreeTypeMinikinFontForTest>(fontPath,
101 atoi((const char*)index));
102 fonts.push_back(Font::Builder(minikinFont).setStyle(style).build());
103 }
104 }
105
106 xmlChar* lang = xmlGetProp(familyNode, (const xmlChar*)"lang");
107 std::shared_ptr<FontFamily> family;
108 if (lang == nullptr) {
109 family = std::make_shared<FontFamily>(variant, std::move(fonts));
110 } else {
111 uint32_t langId = registerLocaleList(std::string((const char*)lang, xmlStrlen(lang)));
112 family = std::make_shared<FontFamily>(langId, variant, std::move(fonts),
113 false /* isCustomFallback */);
114 }
115 families.push_back(family);
116 }
117 xmlFreeDoc(doc);
118 return families;
119 }
120
buildFontCollection(const std::string & filePath)121 std::shared_ptr<FontCollection> buildFontCollection(const std::string& filePath) {
122 return std::make_shared<FontCollection>(buildFontFamily(filePath));
123 }
124
buildFontFamily(const std::string & filePath)125 std::shared_ptr<FontFamily> buildFontFamily(const std::string& filePath) {
126 auto font = std::make_shared<FreeTypeMinikinFontForTest>(getTestFontPath(filePath));
127 std::vector<std::shared_ptr<Font>> fonts;
128 fonts.push_back(Font::Builder(font).build());
129 return std::make_shared<FontFamily>(std::move(fonts));
130 }
131
buildFontFamily(const std::string & filePath,const std::string & lang,bool isCustomFallback)132 std::shared_ptr<FontFamily> buildFontFamily(const std::string& filePath, const std::string& lang,
133 bool isCustomFallback) {
134 auto font = std::make_shared<FreeTypeMinikinFontForTest>(getTestFontPath(filePath));
135 std::vector<std::shared_ptr<Font>> fonts;
136 fonts.push_back(Font::Builder(font).build());
137 return std::make_shared<FontFamily>(LocaleListCache::getId(lang), FamilyVariant::DEFAULT,
138 std::move(fonts), isCustomFallback);
139 }
140
141 } // namespace minikin
142