feat: add config options to en-/disable each parser

Also fix cmake line, so that ctest can find the test executable;
update readme.

LICENSE

@@ -1,4 +1,4 @@
-Copyright 2017, 2018, 2019, 2020 M. Petra Baranski
+Copyright 2017, 2018, 2019, 2020, 2023 M. Petra Baranski
 
 Permission is hereby granted, free of charge, to any person obtaining a copy of
 this software and associated documentation files (the "Software"), to deal in

README.md

@@ -2,8 +2,6 @@
 
 [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
 [![Version: 1.1.2](https://img.shields.io/badge/Version-1.1.2-brightgreen.svg)](https://semver.org/)
-[![Travis Build Status](https://travis-ci.org/progsource/maddy.svg?branch=master)](https://travis-ci.org/progsource/maddy)
-[![Appveyor Build Status](https://ci.appveyor.com/api/projects/status/04m0lg27kigv1pg8/branch/master?svg=true)](https://ci.appveyor.com/project/progsource/maddy/branch/master)
 
 maddy is a C++ Markdown to HTML **header-only** parser library.
 
@@ -45,13 +43,17 @@ std::stringstream markdownInput("");
 
 // config is optional
 std::shared_ptr<maddy::ParserConfig> config = std::make_shared<maddy::ParserConfig>();
-config->isEmphasizedParserEnabled = true; // default
+// config->isEmphasizedParserEnabled = false; // default true - this flag is deprecated
-config->isHTMLWrappedInParagraph = true; // default
+// config->isHTMLWrappedInParagraph = false; // default true - this flag is deprecated
+config->enabledParsers &= ~maddy::types::EMPHASIZED_PARSER;
+config->enabledParsers |= maddy::types::HTML_PARSER;
 
 std::shared_ptr<maddy::Parser> parser = std::make_shared<maddy::Parser>(config);
 std::string htmlOutput = parser->Parse(markdownInput);
 ```
 
+You can find all parser flags in [`include/maddy/parserconfig.h`](include/maddy/parserconfig.h).
+
 ## How to run the tests
 
 *(tested on Linux with

include/maddy/paragraphparser.h

@@ -34,11 +34,13 @@ public:
    */
    ParagraphParser(
     std::function<void(std::string&)> parseLineCallback,
-    std::function<std::shared_ptr<BlockParser>(const std::string& line)> getBlockParserForLineCallback
+    std::function<std::shared_ptr<BlockParser>(const std::string& line)> getBlockParserForLineCallback,
+    bool isEnabled
   )
     : BlockParser(parseLineCallback, getBlockParserForLineCallback)
     , isStarted(false)
     , isFinished(false)
+    , isEnabled(isEnabled)
   {}
 
   /**
@@ -88,19 +90,31 @@ protected:
   void
   parseBlock(std::string& line) override
   {
-    if (!this->isStarted)
+    if (this->isEnabled && !this->isStarted)
     {
       line = "<p>" + line + " ";
       this->isStarted = true;
       return;
     }
+    else if (!this->isEnabled && !this->isStarted)
+    {
+      line += " ";
+      this->isStarted = true;
+      return;
+    }
 
-    if (line.empty())
+    if (this->isEnabled && line.empty())
     {
       line += "</p>";
       this->isFinished = true;
       return;
     }
+    else if (!this->isEnabled && line.empty())
+    {
+      line += "<br/>";
+      this->isFinished = true;
+      return;
+    }
 
     line += " ";
   }
@@ -108,6 +122,7 @@ protected:
 private:
   bool isStarted;
   bool isFinished;
+  bool isEnabled;
 }; // class ParagraphParser
 
 // -----------------------------------------------------------------------------

include/maddy/parser.h

@@ -59,15 +59,82 @@ public:
    */
   Parser(std::shared_ptr<ParserConfig> config = nullptr)
     : config(config)
-    , breakLineParser(std::make_shared<BreakLineParser>())
+  {
-    , emphasizedParser(std::make_shared<EmphasizedParser>())
+    // deprecated backward compatibility
-    , imageParser(std::make_shared<ImageParser>())
+    // will be removed in 1.4.0 latest including the booleans
-    , inlineCodeParser(std::make_shared<InlineCodeParser>())
+    if (this->config && !this->config->isEmphasizedParserEnabled)
-    , italicParser(std::make_shared<ItalicParser>())
+    {
-    , linkParser(std::make_shared<LinkParser>())
+      this->config->enabledParsers &= ~maddy::types::EMPHASIZED_PARSER;
-    , strikeThroughParser(std::make_shared<StrikeThroughParser>())
+    }
-    , strongParser(std::make_shared<StrongParser>())
+    if (this->config && !this->config->isHTMLWrappedInParagraph)
-  {}
+    {
+      this->config->enabledParsers |= maddy::types::HTML_PARSER;
+    }
+
+    if (
+      !this->config ||
+      (this->config->enabledParsers & maddy::types::BREAKLINE_PARSER) != 0
+    )
+    {
+      this->breakLineParser = std::make_shared<BreakLineParser>();
+    }
+
+    if (
+      !this->config ||
+      (this->config->enabledParsers & maddy::types::EMPHASIZED_PARSER) != 0
+    )
+    {
+      this->emphasizedParser = std::make_shared<EmphasizedParser>();
+    }
+
+    if (
+      !this->config ||
+      (this->config->enabledParsers & maddy::types::IMAGE_PARSER) != 0
+    )
+    {
+      this->imageParser = std::make_shared<ImageParser>();
+    }
+
+    if (
+      !this->config ||
+      (this->config->enabledParsers & maddy::types::INLINE_CODE_PARSER) != 0
+    )
+    {
+      this->inlineCodeParser = std::make_shared<InlineCodeParser>();
+    }
+
+    if (
+      !this->config ||
+      (this->config->enabledParsers & maddy::types::ITALIC_PARSER) != 0
+    )
+    {
+      this->italicParser = std::make_shared<ItalicParser>();
+    }
+
+    if (
+      !this->config ||
+      (this->config->enabledParsers & maddy::types::LINK_PARSER) != 0
+    )
+    {
+      this->linkParser = std::make_shared<LinkParser>();
+    }
+
+    if (
+      !this->config ||
+      (this->config->enabledParsers & maddy::types::STRIKETHROUGH_PARSER) != 0
+    )
+    {
+      this->strikeThroughParser = std::make_shared<StrikeThroughParser>();
+    }
+
+    if (
+      !this->config ||
+      (this->config->enabledParsers & maddy::types::STRONG_PARSER) != 0
+    )
+    {
+      this->strongParser = std::make_shared<StrongParser>();
+    }
+  }
 
   /**
    * Parse
@@ -132,24 +199,46 @@ private:
   runLineParser(std::string& line) const
   {
     // Attention! ImageParser has to be before LinkParser
-    this->imageParser->Parse(line);
+    if (this->imageParser)
-    this->linkParser->Parse(line);
+    {
+      this->imageParser->Parse(line);
+    }
+
+    if (this->linkParser)
+    {
+      this->linkParser->Parse(line);
+    }
 
     // Attention! StrongParser has to be before EmphasizedParser
-    this->strongParser->Parse(line);
+    if (this->strongParser)
+    {
+      this->strongParser->Parse(line);
+    }
 
-    if (!this->config || this->config->isEmphasizedParserEnabled)
+    if (this->emphasizedParser)
     {
       this->emphasizedParser->Parse(line);
     }
 
-    this->strikeThroughParser->Parse(line);
+    if (this->strikeThroughParser)
+    {
+      this->strikeThroughParser->Parse(line);
+    }
 
-    this->inlineCodeParser->Parse(line);
+    if (this->inlineCodeParser)
+    {
+      this->inlineCodeParser->Parse(line);
+    }
 
-    this->italicParser->Parse(line);
+    if (this->italicParser)
+    {
+      this->italicParser->Parse(line);
+    }
 
-    this->breakLineParser->Parse(line);
+    if (this->breakLineParser)
+    {
+      this->breakLineParser->Parse(line);
+    }
   }
 
   std::shared_ptr<BlockParser>
@@ -157,66 +246,117 @@ private:
   {
     std::shared_ptr<BlockParser> parser;
 
-    if (maddy::CodeBlockParser::IsStartingLine(line))
+    if (
+      (
+        !this->config ||
+        (this->config->enabledParsers & maddy::types::CODE_BLOCK_PARSER) != 0
+      ) &&
+      maddy::CodeBlockParser::IsStartingLine(line)
+    )
     {
       parser = std::make_shared<maddy::CodeBlockParser>(
         nullptr,
         nullptr
       );
     }
-    else if (maddy::HeadlineParser::IsStartingLine(line))
+    else if (
+      (
+        !this->config ||
+        (this->config->enabledParsers & maddy::types::HEADLINE_PARSER) != 0
+      ) &&
+      maddy::HeadlineParser::IsStartingLine(line)
+    )
     {
       parser = std::make_shared<maddy::HeadlineParser>(
         nullptr,
         nullptr
       );
     }
-    else if (maddy::HorizontalLineParser::IsStartingLine(line))
+    else if (
+      (
+        !this->config ||
+        (this->config->enabledParsers & maddy::types::HORIZONTAL_LINE_PARSER) != 0
+      ) &&
+      maddy::HorizontalLineParser::IsStartingLine(line)
+    )
     {
       parser = std::make_shared<maddy::HorizontalLineParser>(
         nullptr,
         nullptr
       );
     }
-    else if (maddy::QuoteParser::IsStartingLine(line))
+    else if (
+      (
+        !this->config ||
+        (this->config->enabledParsers & maddy::types::QUOTE_PARSER) != 0
+      ) &&
+      maddy::QuoteParser::IsStartingLine(line)
+    )
     {
       parser = std::make_shared<maddy::QuoteParser>(
         [this](std::string& line){ this->runLineParser(line); },
         [this](const std::string& line){ return this->getBlockParserForLine(line); }
       );
     }
-    else if (maddy::TableParser::IsStartingLine(line))
+    else if (
+      (
+        !this->config ||
+        (this->config->enabledParsers & maddy::types::TABLE_PARSER) != 0
+      ) &&
+      maddy::TableParser::IsStartingLine(line)
+    )
     {
       parser = std::make_shared<maddy::TableParser>(
         [this](std::string& line){ this->runLineParser(line); },
         nullptr
       );
     }
-    else if (maddy::ChecklistParser::IsStartingLine(line))
+    else if (
+      (
+        !this->config ||
+        (this->config->enabledParsers & maddy::types::CHECKLIST_PARSER) != 0
+      ) &&
+      maddy::ChecklistParser::IsStartingLine(line)
+    )
     {
       parser = this->createChecklistParser();
     }
-    else if (maddy::OrderedListParser::IsStartingLine(line))
+    else if (
+      (
+        !this->config ||
+        (this->config->enabledParsers & maddy::types::ORDERED_LIST_PARSER) != 0
+      ) &&
+      maddy::OrderedListParser::IsStartingLine(line)
+    )
     {
       parser = this->createOrderedListParser();
     }
-    else if (maddy::UnorderedListParser::IsStartingLine(line))
+    else if (
+      (
+        !this->config ||
+        (this->config->enabledParsers & maddy::types::UNORDERED_LIST_PARSER) != 0
+      ) &&
+      maddy::UnorderedListParser::IsStartingLine(line)
+    )
     {
       parser = this->createUnorderedListParser();
     }
     else if (
       this->config &&
-      !this->config->isHTMLWrappedInParagraph &&
+      (this->config->enabledParsers & maddy::types::HTML_PARSER) != 0 &&
       maddy::HtmlParser::IsStartingLine(line)
     )
     {
       parser = std::make_shared<maddy::HtmlParser>(nullptr, nullptr);
     }
-    else if (maddy::ParagraphParser::IsStartingLine(line))
+    else if (
+      maddy::ParagraphParser::IsStartingLine(line)
+    )
     {
       parser = std::make_shared<maddy::ParagraphParser>(
         [this](std::string& line){ this->runLineParser(line); },
-        nullptr
+        nullptr,
+        (!this->config || (this->config->enabledParsers & maddy::types::PARAGRAPH_PARSER) != 0)
       );
     }
 
@@ -232,7 +372,13 @@ private:
       {
         std::shared_ptr<BlockParser> parser;
 
-        if (maddy::ChecklistParser::IsStartingLine(line))
+        if (
+          (
+            !this->config ||
+            (this->config->enabledParsers & maddy::types::CHECKLIST_PARSER) != 0
+          ) &&
+          maddy::ChecklistParser::IsStartingLine(line)
+        )
         {
           parser = this->createChecklistParser();
         }
@@ -251,11 +397,23 @@ private:
       {
         std::shared_ptr<BlockParser> parser;
 
-        if (maddy::OrderedListParser::IsStartingLine(line))
+        if (
+          (
+            !this->config ||
+            (this->config->enabledParsers & maddy::types::ORDERED_LIST_PARSER) != 0
+          ) &&
+          maddy::OrderedListParser::IsStartingLine(line)
+        )
         {
           parser = this->createOrderedListParser();
         }
-        else if (maddy::UnorderedListParser::IsStartingLine(line))
+        else if (
+          (
+            !this->config ||
+            (this->config->enabledParsers & maddy::types::UNORDERED_LIST_PARSER) != 0
+          ) &&
+          maddy::UnorderedListParser::IsStartingLine(line)
+        )
         {
           parser = this->createUnorderedListParser();
         }
@@ -274,11 +432,23 @@ private:
       {
         std::shared_ptr<BlockParser> parser;
 
-        if (maddy::OrderedListParser::IsStartingLine(line))
+        if (
+          (
+            !this->config ||
+            (this->config->enabledParsers & maddy::types::ORDERED_LIST_PARSER) != 0
+          ) &&
+          maddy::OrderedListParser::IsStartingLine(line)
+        )
         {
           parser = this->createOrderedListParser();
         }
-        else if (maddy::UnorderedListParser::IsStartingLine(line))
+        else if (
+          (
+            !this->config ||
+            (this->config->enabledParsers & maddy::types::UNORDERED_LIST_PARSER) != 0
+          ) &&
+          maddy::UnorderedListParser::IsStartingLine(line)
+        )
         {
           parser = this->createUnorderedListParser();
         }

include/maddy/parserconfig.h

@@ -4,12 +4,50 @@
  */
 #pragma once
 
+#include <stdint.h>
+
 // -----------------------------------------------------------------------------
 
 namespace maddy {
 
 // -----------------------------------------------------------------------------
 
+namespace types {
+
+/**
+ * PARSER_TYPE
+ *
+ * Bitwise flags to turn on/off each parser
+*/
+enum PARSER_TYPE : uint32_t
+{
+  NONE                     = 0,
+
+  BREAKLINE_PARSER         = 0b1,
+  CHECKLIST_PARSER         = 0b10,
+  CODE_BLOCK_PARSER        = 0b100,
+  EMPHASIZED_PARSER        = 0b1000,
+  HEADLINE_PARSER          = 0b10000,
+  HORIZONTAL_LINE_PARSER   = 0b100000,
+  HTML_PARSER              = 0b1000000,
+  IMAGE_PARSER             = 0b10000000,
+  INLINE_CODE_PARSER       = 0b100000000,
+  ITALIC_PARSER            = 0b1000000000,
+  LINK_PARSER              = 0b10000000000,
+  ORDERED_LIST_PARSER      = 0b100000000000,
+  PARAGRAPH_PARSER         = 0b1000000000000,
+  QUOTE_PARSER             = 0b10000000000000,
+  STRIKETHROUGH_PARSER     = 0b100000000000000,
+  STRONG_PARSER            = 0b1000000000000000,
+  TABLE_PARSER             = 0b10000000000000000,
+  UNORDERED_LIST_PARSER    = 0b100000000000000000,
+
+  DEFAULT                  = 0b111111111110111111,
+  ALL                      = 0b111111111111111111,
+};
+
+} // namespace types
+
 /**
  * ParserConfig
  *
@@ -17,12 +55,22 @@ namespace maddy {
  */
 struct ParserConfig
 {
+  /**
+   * @deprecated will be removed in 1.4.0 latest
+  */
   bool isEmphasizedParserEnabled;
+
+  /**
+   * @deprecated will be removed in 1.4.0 latest
+  */
   bool isHTMLWrappedInParagraph;
 
+  uint32_t enabledParsers;
+
   ParserConfig()
     : isEmphasizedParserEnabled(true)
     , isHTMLWrappedInParagraph(true)
+    , enabledParsers(maddy::types::DEFAULT)
   {}
 }; // class ParserConfig
 

tests/CMakeLists.txt

@@ -25,4 +25,4 @@ target_include_directories(MaddyTests PUBLIC
   ${CMAKE_CURRENT_SOURCE_DIR}
 )
 target_link_libraries(MaddyTests maddy gmock_main)
-add_test(MaddyTests MaddyTests)
+add_test(NAME MaddyTests COMMAND MaddyTests)

tests/maddy/test_maddy_paragraphparser.cpp

@@ -20,7 +20,8 @@ protected:
   {
     this->pParser = std::make_shared<maddy::ParagraphParser>(
       nullptr,
-      nullptr
+      nullptr,
+      true
     );
   }
 };

tests/maddy/test_maddy_parser.cpp

@@ -34,3 +34,33 @@ TEST(MADDY_PARSER, ItShouldParseWithConfig)
 
   ASSERT_EQ(testHtml2, output);
 }
+
+TEST(MADDY_PARSER, ItShouldParseWithBitwiseConfig)
+{
+  auto config = std::make_shared<maddy::ParserConfig>();
+  config->enabledParsers &= ~maddy::types::EMPHASIZED_PARSER;
+  config->enabledParsers |= maddy::types::HTML_PARSER;
+
+  auto parser = std::make_shared<maddy::Parser>(config);
+
+  std::stringstream markdown(testMarkdown);
+
+  const std::string output = parser->Parse(markdown);
+
+  ASSERT_EQ(testHtml2, output);
+}
+
+TEST(MADDY_PARSER, ItShouldParseWithSmallConfig)
+{
+  auto config = std::make_shared<maddy::ParserConfig>();
+  config->enabledParsers = maddy::types::EMPHASIZED_PARSER |
+                           maddy::types::STRONG_PARSER;
+
+  auto parser = std::make_shared<maddy::Parser>(config);
+
+  std::stringstream markdown(testMarkdown);
+
+  const std::string output = parser->Parse(markdown);
+
+  ASSERT_EQ(testHtml3, output);
+}

tests/maddy/test_maddy_parser.h

@@ -71,3 +71,4 @@ foot a|foot b|foot c\n\
 
 const std::string testHtml = "<h1>This is a test</h1><p>This should result in a praragraph it's that simple. </p><ul><li>an <i>unordered</i> list<ul><li>with some <strong>hierarchy</strong><ol><li>and an <em>ordered</em></li><li>list</li><li>directly</li></ol></li><li>inside</li></ul></li></ul><pre><code>\nvar c = 'blub';\n</code></pre><blockquote><p>A Quote  </p><p>With some <s>text</s>  blocks inside  </p><ul><li>even a list </li><li>should be </li><li>possible </li></ul></blockquote><p>And well <code>inline code</code> should also work. </p><h2>Another Headline</h2><p>And not to forget <a href=\"http://progsource.de\">link to progsource</a> should work. And well - let's see how an image would be shown: </p><p><img src=\"http://progsource.de/img/progsource.png\" alt=\"an image\"/> </p><hr/><p><a name=\"to top\"></a> </p><h3>and more headlines</h3><ul class=\"checklist\"><li><label><input type=\"checkbox\"/> how</label></li><li><label><input type=\"checkbox\"/> about<ul class=\"checklist\"><li><label><input type=\"checkbox\"/> a</label></li><li><label><input type=\"checkbox\" checked=\"checked\"/> nice</label></li></ul></label></li><li><label><input type=\"checkbox\" checked=\"checked\"/> check</label></li><li><label><input type=\"checkbox\"/> list</label></li></ul><h4>even a table</h4><table><thead><tr><th>Left header</th><th>middle header</th><th>last header</th></tr></thead><tbody><tr><td>cell 1</td><td>cell <strong>2</strong></td><td>cell 3</td></tr><tr><td>cell 4</td><td>cell 5</td><td>cell 6</td></tr></tbody><tfoot><tr><td>foot a</td><td>foot b</td><td>foot c</td></tr></tfoot></table><h5>h5</h5><h6>h6</h6>";
 const std::string testHtml2 = "<h1>This is a test</h1><p>This should result in a praragraph it's that simple. </p><ul><li>an <i>unordered</i> list<ul><li>with some <strong>hierarchy</strong><ol><li>and an _ordered_</li><li>list</li><li>directly</li></ol></li><li>inside</li></ul></li></ul><pre><code>\nvar c = 'blub';\n</code></pre><blockquote><p>A Quote  </p><p>With some <s>text</s>  blocks inside  </p><ul><li>even a list </li><li>should be </li><li>possible </li></ul></blockquote><p>And well <code>inline code</code> should also work. </p><h2>Another Headline</h2><p>And not to forget <a href=\"http://progsource.de\">link to progsource</a> should work. And well - let's see how an image would be shown: </p><p><img src=\"http://progsource.de/img/progsource.png\" alt=\"an image\"/> </p><hr/><a name=\"to top\"></a><h3>and more headlines</h3><ul class=\"checklist\"><li><label><input type=\"checkbox\"/> how</label></li><li><label><input type=\"checkbox\"/> about<ul class=\"checklist\"><li><label><input type=\"checkbox\"/> a</label></li><li><label><input type=\"checkbox\" checked=\"checked\"/> nice</label></li></ul></label></li><li><label><input type=\"checkbox\" checked=\"checked\"/> check</label></li><li><label><input type=\"checkbox\"/> list</label></li></ul><h4>even a table</h4><table><thead><tr><th>Left header</th><th>middle header</th><th>last header</th></tr></thead><tbody><tr><td>cell 1</td><td>cell <strong>2</strong></td><td>cell 3</td></tr><tr><td>cell 4</td><td>cell 5</td><td>cell 6</td></tr></tbody><tfoot><tr><td>foot a</td><td>foot b</td><td>foot c</td></tr></tfoot></table><h5>h5</h5><h6>h6</h6>";
+const std::string testHtml3 = "# This is a test <br/>This should result in a praragraph it's that simple. <br/>* an *unordered* list   * with some <strong>hierarchy</strong>     1. and an <em>ordered</em>     * list     * directly   * inside <br/>``` var c = 'blub'; ``` <br/>> A Quote > > With some ~~text~~  blocks inside > > * even a list > * should be > * possible > <br/>And well `inline code` should also work. <br/>## Another Headline <br/>And not to forget [link to progsource](http://progsource.de) should work. And well - let's see how an image would be shown: <br/>![an image](http://progsource.de/img/progsource.png) <br/>--- <br/><a name=\"to top\"></a> <br/>### and more headlines <br/>- [ ] how - [ ] about   - [ ] a   - [x] nice - [x] check - [ ] list <br/>#### even a table <br/>|table> Left header|middle header|last header - | - | - cell 1|cell <strong>2</strong>|cell 3 cell 4|cell 5|cell 6 - | - | - foot a|foot b|foot c |<table <br/>##### h5 ###### h6 <br/>";