1 /*
2 * Copyright (c) 2023 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #include "font_config.h"
17
18 #include <dirent.h>
19 #include <fstream>
20 #include <libgen.h>
21 #include <sys/stat.h>
22 #include <sys/types.h>
23 #include <unistd.h>
24
25 #include "securec.h"
26 #include "texgine/utils/exlog.h"
27
28 namespace OHOS {
29 namespace Rosen {
30 namespace TextEngine {
31 #define SUCCESSED 0
32 #define FAILED 1
33
34 const std::string DEFAULT_DIR = "/system/fonts/";
35
FontConfig(const char * fname)36 FontConfig::FontConfig(const char* fname)
37 {
38 int err = ParseConfig(fname);
39 if (err != 0) {
40 LOGSO_FUNC_LINE(ERROR) << "parse config err";
41 }
42 }
43
GetFileData(const char * fname,int & size)44 char* FontConfig::GetFileData(const char* fname, int& size)
45 {
46 char realPath[PATH_MAX] = {0};
47 if (fname == nullptr || realpath(fname, realPath) == NULL) {
48 LOGSO_FUNC_LINE(ERROR) << "path or realPath is NULL";
49 return nullptr;
50 }
51 std::ifstream file(fname);
52 if (file.good()) {
53 FILE* fp = fopen(fname, "r");
54 if (fp == nullptr) {
55 return nullptr;
56 }
57 fseek(fp, 0L, SEEK_END);
58 size = ftell(fp) + 1;
59 rewind(fp);
60 char* data = static_cast<char*>(malloc(size));
61 if (data == nullptr) {
62 fclose(fp);
63 return nullptr;
64 }
65 if (memset_s(data, size, 0, size) != EOK) {
66 LOGSO_FUNC_LINE(ERROR) << "memset failed";
67 free(data);
68 data = nullptr;
69 fclose(fp);
70 return nullptr;
71 }
72 (void)fread(data, size, 1, fp);
73 fclose(fp);
74 return data;
75 }
76
77 return nullptr;
78 }
79
CheckConfigFile(const char * fname,Json::Value & root) const80 int FontConfig::CheckConfigFile(const char* fname, Json::Value& root) const
81 {
82 int size = 0;
83 char* data = GetFileData(fname, size);
84 if (data == nullptr) {
85 LOGSO_FUNC_LINE(ERROR) << "data is null";
86 return FAILED;
87 }
88 JSONCPP_STRING errs;
89 Json::CharReaderBuilder charReaderBuilder;
90 std::unique_ptr<Json::CharReader> jsonReader(charReaderBuilder.newCharReader());
91 bool isJson = jsonReader->parse(data, data + size, &root, &errs);
92 free(data);
93 data = nullptr;
94
95 if (!isJson || !errs.empty()) {
96 LOGSO_FUNC_LINE(ERROR) << "not json or errs no empty";
97 return FAILED;
98 }
99 return SUCCESSED;
100 }
101
ParseFont(const Json::Value & root)102 int FontConfig::ParseFont(const Json::Value& root)
103 {
104 for (unsigned int i = 0; i < root.size(); ++i) {
105 if (root[i].isString()) {
106 fontSet_.emplace_back(DEFAULT_DIR + root[i].asString());
107 }
108 }
109 return SUCCESSED;
110 }
111
ParseConfig(const char * fname)112 int FontConfig::ParseConfig(const char* fname)
113 {
114 if (fname == nullptr) {
115 LOGSO_FUNC_LINE(ERROR) << "fname is null";
116 return FAILED;
117 }
118 Json::Value root;
119 int err = CheckConfigFile(fname, root);
120 if (err != 0) {
121 LOGSO_FUNC_LINE(ERROR) << "check config file failed";
122 return err;
123 }
124 const char* tag = "font";
125 if (root.isMember(tag)) {
126 if (root[tag].isArray()) {
127 ParseFont(root[tag]);
128 } else {
129 LOGSO_FUNC_LINE(ERROR) << "not array";
130 return FAILED;
131 }
132 } else {
133 LOGSO_FUNC_LINE(ERROR) << "not member";
134 return FAILED;
135 }
136
137 return SUCCESSED;
138 }
139
Dump() const140 void FontConfig::Dump() const
141 {
142 for (auto it : fontSet_) {
143 LOGSO_FUNC_LINE(INFO) << "fname:" << it;
144 }
145 }
146
GetFontSet() const147 std::vector<std::string> FontConfig::GetFontSet() const
148 {
149 return fontSet_;
150 }
151 } // namespace TextEngine
152 } // namespace Rosen
153 } // namespace OHOS