Parser: Add callback support for unknown "tags"

iparser.h

@@ -2,15 +2,27 @@
 #define IPARSER_H
 #include <vector>
 #include <string_view>
+#include <functional>
 #include "headline.h"
 #include "database/pagedao.h"
 #include "urlprovider.h"
 class IParser
 {
+  protected:
+	static std::string empty(std::string_view key, std::string_view content)
+	{
+		return "";
+	}
+
   public:
 	virtual std::string extractCommand(std::string cmdname, const std::string &content) const = 0;
 	virtual std::vector<Headline> extractHeadlines(const std::string &content) const = 0;
-	virtual std::string parse(const PageDao &pagedao, UrlProvider &provider, const std::string &content) const = 0;
+	virtual inline std::string parse(const PageDao &pagedao, UrlProvider &provider, const std::string &content) const
+	{
+		return parse(pagedao, provider, content, empty);
+	}
+	virtual std::string parse(const PageDao &pagedao, UrlProvider &provider, const std::string &content,
+							  const std::function<std::string(std::string_view, std::string_view)> &callback) const = 0;
 	virtual std::vector<std::string> extractCategories(const std::string &content) const = 0;
 
 	virtual ~IParser(){};

parser.cpp

@@ -116,12 +116,13 @@ std::string Parser::processLink(const PageDao &pageDao, UrlProvider &urlProvider
 	return htmllink.render();
 }
 
-std::string Parser::parse(const PageDao &pagedao, UrlProvider &provider, const std::string &content) const
+std::string Parser::parse(const PageDao &pagedao, UrlProvider &provider, const std::string &content,
+						  const std::function<std::string(std::string_view, std::string_view)> &callback) const
 {
 	std::string result;
 	// we don't care about commands, but we nevertheless replace them with empty strings
 	std::regex tagfinder(
-		R"(\[(b|i|u|li||ul|ol|link|wikilink|h\d|cmd:rename|cmd:redirect|cmd:pagetitle|category)*?\]((\s|\S)*?)\[/\1])");
+		R"(\[(b|i|u|li||ul|ol|link|wikilink|h\d|cmd:rename|cmd:redirect|cmd:pagetitle|category|dynamic:postlist)*?\]((\s|\S)*?)\[/\1])");
 	result = utils::regex_callback_replacer(
 		tagfinder, content,
 		[&](std::smatch &match)
@@ -129,7 +130,7 @@ std::string Parser::parse(const PageDao &pagedao, UrlProvider &provider, const s
 			std::string tag = match.str(1);
 			std::string content = match.str(2);
 			std::string justreplace[] = {"b", "i", "u", "ul", "li", "ol"};
-			content = parse(pagedao, provider, content);
+			content = parse(pagedao, provider, content, callback);
 			if(std::find(std::begin(justreplace), std::end(justreplace), tag) != std::end(justreplace))
 			{
 				return "<" + tag + ">" + content + "</" + tag + ">";
@@ -144,7 +145,7 @@ std::string Parser::parse(const PageDao &pagedao, UrlProvider &provider, const s
 			{
 				return "<" + tag + " id='" + content + "'>" + content + "</" + tag + ">";
 			}
-			return std::string("");
+			return callback(tag, content);
 		});
 	result = utils::strreplace(result, "\r\n", "<br>");
 	return result;

parser.h

@@ -11,9 +11,12 @@ class Parser : public IParser
 	std::string extractCommand(std::string cmdname, const std::string &content) const;
 	std::vector<Headline> extractHeadlines(const std::string &content) const override;
 	std::vector<std::string> extractCategories(const std::string &content) const override;
-	std::string parse(const PageDao &pagedao, UrlProvider &provider, const std::string &content) const override;
+	using IParser::parse;
+	virtual std::string parse(
+		const PageDao &pagedao, UrlProvider &provider, const std::string &content,
+		const std::function<std::string(std::string_view, std::string_view)> &callback) const override;
+
 	using IParser::IParser;
-	~Parser(){};
 };
 
 #endif // PARSER_H