1 /*
2 * Copyright (c) 2021 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 "CssStyleParser.h"
17
getArributesMap(const std::string & key) const18 const std::unordered_map<std::string, std::string>& CssStyleParser::getArributesMap(const std::string& key) const
19 {
20 auto styleClassIter = fStyleMap.find(key);
21 if (styleClassIter != fStyleMap.end()) {
22 return styleClassIter->second;
23 } else {
24 static std::unordered_map<std::string, std::string> fEmptyMap;
25 return fEmptyMap;
26 }
27 }
28
parseCssStyle(const std::string & style)29 void CssStyleParser::parseCssStyle(const std::string& style)
30 {
31 // begin from 1 to skip first '.'
32 auto styles = splitString(style.substr(1), "}.");
33 for (auto& style : styles) {
34 auto nameEnd = style.find_first_of('{');
35 if (nameEnd != std::string::npos) {
36 auto names = style.substr(0, nameEnd);
37 if (names.empty()) {
38 return;
39 }
40 auto splitNames = splitString(names, ",.");
41 auto attributesString = style.substr(nameEnd + 1);
42 auto attributesVector = splitString(attributesString, ";");
43 for (auto& splitName : splitNames) {
44 for (auto& attribute : attributesVector) {
45 auto arrPair = splitString(attribute, ":");
46 if (arrPair.size() == 2) {
47 auto arrMapIter = fStyleMap.find(splitName);
48 if (arrMapIter == fStyleMap.end()) {
49 std::unordered_map<std::string, std::string> arrMap;
50 arrMap.emplace(std::make_pair(arrPair[0], arrPair[1]));
51 fStyleMap.emplace(std::make_pair(splitName, arrMap));
52 } else {
53 arrMapIter->second.emplace(std::make_pair(arrPair[0], arrPair[1]));
54 }
55 }
56 }
57 }
58 }
59 }
60 }
61
splitString(const std::string & srcString,const std::string & splitString)62 std::vector<std::string> CssStyleParser::splitString(const std::string& srcString, const std::string& splitString)
63 {
64 std::string::size_type pos1;
65 std::string::size_type pos2;
66 std::vector<std::string> res;
67 pos2 = srcString.find(splitString);
68 pos1 = 0;
69 while (std::string::npos != pos2) {
70 res.push_back(srcString.substr(pos1, pos2 - pos1));
71
72 pos1 = pos2 + splitString.size();
73 pos2 = srcString.find(splitString, pos1);
74 }
75 if (pos1 != srcString.length()) {
76 res.push_back(srcString.substr(pos1));
77 }
78 return res;
79 }