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annotate 3rdparty/maddy/quoteparser.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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ferencd@0 1 /*
ferencd@0 2 * This project is licensed under the MIT license. For more information see the
ferencd@0 3 * LICENSE file.
ferencd@0 4 */
ferencd@0 5 #pragma once
ferencd@0 6
ferencd@0 7 // -----------------------------------------------------------------------------
ferencd@0 8
ferencd@0 9 #include <functional>
ferencd@0 10 #include <regex>
ferencd@0 11 #include <string>
ferencd@0 12
ferencd@0 13 #include "maddy/blockparser.h"
ferencd@0 14
ferencd@0 15 // -----------------------------------------------------------------------------
ferencd@0 16
ferencd@0 17 namespace maddy {
ferencd@0 18
ferencd@0 19 // -----------------------------------------------------------------------------
ferencd@0 20
ferencd@0 21 /**
ferencd@0 22 * QuoteParser
ferencd@0 23 *
ferencd@0 24 * @class
ferencd@0 25 */
ferencd@0 26 class QuoteParser : public BlockParser
ferencd@0 27 {
ferencd@0 28 public:
ferencd@0 29 /**
ferencd@0 30 * ctor
ferencd@0 31 *
ferencd@0 32 * @method
ferencd@0 33 * @param {std::function<void(std::string&)>} parseLineCallback
ferencd@0 34 * @param {std::function<std::shared_ptr<BlockParser>(const std::string& line)>} getBlockParserForLineCallback
ferencd@0 35 */
ferencd@0 36 QuoteParser(
ferencd@0 37 std::function<void(std::string&)> parseLineCallback,
ferencd@0 38 std::function<std::shared_ptr<BlockParser>(const std::string& line)> getBlockParserForLineCallback
ferencd@0 39 )
ferencd@0 40 : BlockParser(parseLineCallback, getBlockParserForLineCallback)
ferencd@0 41 , isStarted(false)
ferencd@0 42 , isFinished(false)
ferencd@0 43 {}
ferencd@0 44
ferencd@0 45 /**
ferencd@0 46 * IsStartingLine
ferencd@0 47 *
ferencd@0 48 * A quote starts with `> `.
ferencd@0 49 *
ferencd@0 50 * @method
ferencd@0 51 * @param {const std::string&} line
ferencd@0 52 * @return {bool}
ferencd@0 53 */
ferencd@0 54 static bool
ferencd@0 55 IsStartingLine(const std::string& line)
ferencd@0 56 {
ferencd@0 57 static std::regex re("^\\>.*");
ferencd@0 58 return std::regex_match(line, re);
ferencd@0 59 }
ferencd@0 60
ferencd@0 61 /**
ferencd@0 62 * AddLine
ferencd@0 63 *
ferencd@0 64 * Adding a line which has to be parsed.
ferencd@0 65 *
ferencd@0 66 * @method
ferencd@0 67 * @param {std::string&} line
ferencd@0 68 * @return {void}
ferencd@0 69 */
ferencd@0 70 void
ferencd@0 71 AddLine(std::string& line) override
ferencd@0 72 {
ferencd@0 73 if (!this->isStarted)
ferencd@0 74 {
ferencd@0 75 this->result << "<blockquote>";
ferencd@0 76 this->isStarted = true;
ferencd@0 77 }
ferencd@0 78
ferencd@0 79 bool finish = false;
ferencd@0 80 if (line.empty())
ferencd@0 81 {
ferencd@0 82 finish = true;
ferencd@0 83 }
ferencd@0 84
ferencd@0 85 this->parseBlock(line);
ferencd@0 86
ferencd@0 87 if (this->isInlineBlockAllowed() && !this->childParser)
ferencd@0 88 {
ferencd@0 89 this->childParser = this->getBlockParserForLine(line);
ferencd@0 90 }
ferencd@0 91
ferencd@0 92 if (this->childParser)
ferencd@0 93 {
ferencd@0 94 this->childParser->AddLine(line);
ferencd@0 95
ferencd@0 96 if (this->childParser->IsFinished())
ferencd@0 97 {
ferencd@0 98 this->result << this->childParser->GetResult().str();
ferencd@0 99 this->childParser = nullptr;
ferencd@0 100 }
ferencd@0 101
ferencd@0 102 return;
ferencd@0 103 }
ferencd@0 104
ferencd@0 105 if (this->isLineParserAllowed())
ferencd@0 106 {
ferencd@0 107 this->parseLine(line);
ferencd@0 108 }
ferencd@0 109
ferencd@0 110 if (finish)
ferencd@0 111 {
ferencd@0 112 this->result << "</blockquote>";
ferencd@0 113 this->isFinished = true;
ferencd@0 114 }
ferencd@0 115
ferencd@0 116 this->result << line;
ferencd@0 117 }
ferencd@0 118
ferencd@0 119 /**
ferencd@0 120 * IsFinished
ferencd@0 121 *
ferencd@0 122 * @method
ferencd@0 123 * @return {bool}
ferencd@0 124 */
ferencd@0 125 bool
ferencd@0 126 IsFinished() const override
ferencd@0 127 {
ferencd@0 128 return this->isFinished;
ferencd@0 129 }
ferencd@0 130
ferencd@0 131 protected:
ferencd@0 132 bool
ferencd@0 133 isInlineBlockAllowed() const override
ferencd@0 134 {
ferencd@0 135 return true;
ferencd@0 136 }
ferencd@0 137
ferencd@0 138 bool
ferencd@0 139 isLineParserAllowed() const override
ferencd@0 140 {
ferencd@0 141 return true;
ferencd@0 142 }
ferencd@0 143
ferencd@0 144 void
ferencd@0 145 parseBlock(std::string& line) override
ferencd@0 146 {
ferencd@0 147 static std::regex lineRegexWithSpace("^\\> ");
ferencd@0 148 line = std::regex_replace(line, lineRegexWithSpace, "");
ferencd@0 149 static std::regex lineRegexWithoutSpace("^\\>");
ferencd@0 150 line = std::regex_replace(line, lineRegexWithoutSpace, "");
ferencd@0 151
ferencd@0 152 if (!line.empty())
ferencd@0 153 {
ferencd@0 154 line += " ";
ferencd@0 155 }
ferencd@0 156 }
ferencd@0 157
ferencd@0 158 private:
ferencd@0 159 bool isStarted;
ferencd@0 160 bool isFinished;
ferencd@0 161 }; // class QuoteParser
ferencd@0 162
ferencd@0 163 // -----------------------------------------------------------------------------
ferencd@0 164
ferencd@0 165 } // namespace maddy