Mercurial > thymian

comparison 3rdparty/maddy/checklistparser.h @ 0:a4671277546c tip

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
created the repository for the thymian project
author ferencd
date Tue, 17 Aug 2021 11:19:54 +0200
parents
children
comparison
equal deleted inserted replaced
-1:000000000000 0:a4671277546c
1 /*
2 * This project is licensed under the MIT license. For more information see the
3 * LICENSE file.
4 */
5 #pragma once
6
7 // -----------------------------------------------------------------------------
8
9 #include <functional>
10 #include <regex>
11 #include <string>
12
13 #include "maddy/blockparser.h"
14
15 // -----------------------------------------------------------------------------
16
17 namespace maddy {
18
19 // -----------------------------------------------------------------------------
20
21 /**
22 * ChecklistParser
23 *
24 * @class
25 */
26 class ChecklistParser : public BlockParser
27 {
28 public:
29 /**
30 * ctor
31 *
32 * @method
33 * @param {std::function<void(std::string&)>} parseLineCallback
34 * @param {std::function<std::shared_ptr<BlockParser>(const std::string& line)>} getBlockParserForLineCallback
35 */
36 ChecklistParser(
37 std::function<void(std::string&)> parseLineCallback,
38 std::function<std::shared_ptr<BlockParser>(const std::string& line)> getBlockParserForLineCallback
39 )
40 : BlockParser(parseLineCallback, getBlockParserForLineCallback)
41 , isStarted(false)
42 , isFinished(false)
43 {}
44
45 /**
46 * IsStartingLine
47 *
48 * An unordered list starts with `* `.
49 *
50 * @method
51 * @param {const std::string&} line
52 * @return {bool}
53 */
54 static bool
55 IsStartingLine(const std::string& line)
56 {
57 static std::regex re("^- \\[[x| ]\\] .*");
58 return std::regex_match(line, re);
59 }
60
61 /**
62 * IsFinished
63 *
64 * @method
65 * @return {bool}
66 */
67 bool
68 IsFinished() const override
69 {
70 return this->isFinished;
71 }
72
73 protected:
74 bool
75 isInlineBlockAllowed() const override
76 {
77 return true;
78 }
79
80 bool
81 isLineParserAllowed() const override
82 {
83 return true;
84 }
85
86 void
87 parseBlock(std::string& line) override
88 {
89 bool isStartOfNewListItem = IsStartingLine(line);
90 uint32_t indentation = getIndentationWidth(line);
91
92 static std::regex lineRegex("^(- )");
93 line = std::regex_replace(line, lineRegex, "");
94
95 static std::regex emptyBoxRegex("^\\[ \\]");
96 static std::string emptyBoxReplacement = "<input type=\"checkbox\"/>";
97 line = std::regex_replace(line, emptyBoxRegex, emptyBoxReplacement);
98
99 static std::regex boxRegex("^\\[x\\]");
100 static std::string boxReplacement = "<input type=\"checkbox\" checked=\"checked\"/>";
101 line = std::regex_replace(line, boxRegex, boxReplacement);
102
103 if (!this->isStarted)
104 {
105 line = "<ul class=\"checklist\"><li><label>" + line;
106 this->isStarted = true;
107 return;
108 }
109
110 if (indentation >= 2)
111 {
112 line = line.substr(2);
113 return;
114 }
115
116 if (
117 line.empty() ||
118 line.find("</label></li><li><label>") != std::string::npos ||
119 line.find("</label></li></ul>") != std::string::npos
120 )
121 {
122 line = "</label></li></ul>" + line;
123 this->isFinished = true;
124 return;
125 }
126
127 if (isStartOfNewListItem)
128 {
129 line = "</label></li><li><label>" + line;
130 }
131 }
132
133 private:
134 bool isStarted;
135 bool isFinished;
136 }; // class ChecklistParser
137
138 // -----------------------------------------------------------------------------
139
140 } // namespace maddy