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

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created the repository for the thymian project
author ferencd
date Tue, 17 Aug 2021 11:19:54 +0200
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-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 <string>
11 #include <regex>
12
13 #include "maddy/blockparser.h"
14
15 // -----------------------------------------------------------------------------
16
17 namespace maddy {
18
19 // -----------------------------------------------------------------------------
20
21 /**
22 * HorizontalLineParser
23 *
24 * From Markdown: `---`
25 *
26 * To HTML: `<hr/>`
27 *
28 * @class
29 */
30 class HorizontalLineParser : public BlockParser
31 {
32 public:
33 /**
34 * ctor
35 *
36 * @method
37 * @param {std::function<void(std::string&)>} parseLineCallback
38 * @param {std::function<std::shared_ptr<BlockParser>(const std::string& line)>} getBlockParserForLineCallback
39 */
40 HorizontalLineParser(
41 std::function<void(std::string&)> parseLineCallback,
42 std::function<std::shared_ptr<BlockParser>(const std::string& line)> getBlockParserForLineCallback
43 )
44 : BlockParser(parseLineCallback, getBlockParserForLineCallback)
45 , lineRegex("^---$")
46 {}
47
48 /**
49 * IsStartingLine
50 *
51 * If the line has exact three dashes `---`, then it is a horizontal line.
52 *
53 * @method
54 * @param {const std::string&} line
55 * @return {bool}
56 */
57 static bool
58 IsStartingLine(const std::string& line)
59 {
60 static std::regex re("^---$");
61 return std::regex_match(line, re);
62 }
63
64 /**
65 * IsFinished
66 *
67 * The horizontal line is always only one line long, so this method always
68 * returns true.
69 *
70 * @method
71 * @return {bool}
72 */
73 bool
74 IsFinished() const override
75 {
76 return true;
77 }
78
79 protected:
80 bool
81 isInlineBlockAllowed() const override
82 {
83 return false;
84 }
85
86 bool
87 isLineParserAllowed() const override
88 {
89 return false;
90 }
91
92 void
93 parseBlock(std::string& line) override
94 {
95 static std::string replacement = "<hr/>";
96
97 line = std::regex_replace(line, lineRegex, replacement);
98 }
99
100 private:
101 std::regex lineRegex;
102 }; // class HorizontalLineParser
103
104 // -----------------------------------------------------------------------------
105
106 } // namespace maddy