ParserMarkdown: Implement processLink

.gitmodules

@@ -7,3 +7,6 @@
 [submodule "submodules/qssb.h"]
 	path = submodules/qssb.h
 	url = https://gitea.quitesimple.org/crtxcr/qssb.h.git
+[submodule "submodules/qsmaddy"]
+	path = submodules/qsmaddy
+	url = https://gitea.quitesimple.org/crtxcr/qsmaddy

Makefile

@@ -3,7 +3,7 @@
 CXXFLAGS=-std=c++17 -O0 -g -no-pie -pipe -MMD -Wall -Wextra
 RELEASE_CXXFLAGS=-std=c++17 -O3 -pipe -MMD -Wall -Wextra
 LDFLAGS=-lsqlite3 -lpthread -lcrypto -lstdc++fs -lseccomp
-INCLUDEFLAGS=-I submodules/sqlitemoderncpp/hdr -I submodules/cpp-httplib -I submodules/qssb.h
+INCLUDEFLAGS=-I submodules/sqlitemoderncpp/hdr -I submodules/cpp-httplib -I submodules/qssb.h -I submodules/qsmaddy/include/
 
 CXX=g++
 

parser.cpp

@@ -30,19 +30,12 @@ SOFTWARE.
 std::vector<Headline> Parser::extractHeadlines(std::string content) const
 {
 	std::vector<Headline> result;
-	std::string reg = R"(\[h(1|2|3)\](.*?)\[/h\1\])";
-	std::regex headerfinder(reg);
-	auto begin = std::sregex_iterator(content.begin(), content.end(), headerfinder);
-	auto end = std::sregex_iterator();
-
-	for(auto it = begin; it != end; it++)
-	{
-		auto smatch = *it;
+	utils::regex_callback_extractor(std::regex(R"(\[h(1|2|3)\](.*?)\[/h\1\])"), content, [&](std::smatch &smatch) {
 		Headline h;
 		h.level = utils::toUInt(smatch.str(1));
 		h.title = smatch.str(2);
 		result.push_back(h);
-	}
+	});
 	return result;
 }
 

parsermarkdown.cpp

@@ -0,0 +1,61 @@
+#include "parsermarkdown.h"
+#include "logger.h"
+#include "htmllink.h"
+
+std::string ParserMarkdown::processLink(const PageDao &pageDao, UrlProvider &urlProvider, std::smatch &match) const
+{
+	std::string inner = match.str(1);
+	std::string link = match.str(2);
+	HtmlLink htmllink;
+	htmllink.href = link;
+	htmllink.innervalue = inner;
+
+	if(link.find("http://") == 0 || link.find("https://") == 0)
+	{
+		return htmllink.render();
+	}
+
+	if(pageDao.exists(link))
+	{
+		htmllink.cssclass = "exists";
+	}
+	else
+	{
+		htmllink.cssclass = "notexists";
+	}
+
+	htmllink.href = urlProvider.page(htmllink.href);
+
+	return htmllink.render();
+}
+
+ParserMarkdown::ParserMarkdown()
+{
+}
+
+std::vector<Headline> ParserMarkdown::extractHeadlines(std::string content) const
+{
+	std::vector<Headline> result;
+	utils::regex_callback_extractor(std::regex(R"((#{1,6}) (.*))"), content, [&](std::smatch &smatch) {
+		Headline h;
+		h.level = smatch.str(1).length();
+		h.title = smatch.str(2);
+		result.push_back(h);
+	});
+	return result;
+}
+
+std::string ParserMarkdown::parse(const PageDao &pagedao, UrlProvider &provider, std::string content) const
+{
+	std::shared_ptr<maddy::ParserConfig> config = std::make_shared<maddy::ParserConfig>();
+	auto maddy = std::make_shared<maddy::Parser>(config);
+
+	auto linkParser = std::make_shared<maddy::LinkParser>();
+	linkParser->setCallback([&](std::smatch &match) { return processLink(pagedao, provider, match); });
+	maddy->setLinkParser(linkParser);
+	// TODO: hack because the parser breaks if there is an \r
+	content = utils::strreplace(content, "\r", "");
+	std::stringstream s{content};
+	std::string result = maddy->Parse(s);
+	return result;
+}

parsermarkdown.h

@@ -0,0 +1,17 @@
+#ifndef PARSER_MARKDOWN_H
+#define PARSER_MARKDOWN_H
+
+#include "parser.h"
+#include "maddy/parser.h"
+class ParserMarkdown : public Parser
+{
+private:
+	std::string processLink(const PageDao &pageDao, UrlProvider &urlProvider, std::smatch &match) const;
+
+public:
+	ParserMarkdown();
+	std::vector<Headline> extractHeadlines(std::string content) const;
+	std::string parse(const PageDao &pagedao, UrlProvider &provider, std::string content) const;
+};
+
+#endif // PARSER_MARKDOWN_H

utils.cpp

@@ -175,3 +175,14 @@ std::string utils::toISODate(time_t t)
 	}
 	return std::string{result};
 }
+
+void utils::regex_callback_extractor(std::regex regex, const std::string &input, std::function<void (std::smatch &)> callback)
+{
+	auto begin = std::sregex_iterator(input.begin(), input.end(), regex);
+	auto end = std::sregex_iterator();
+	for(auto it = begin; it != end; it++)
+	{
+		std::smatch smatch = *it;
+		callback(smatch);
+	}
+}

utils.h

@@ -60,6 +60,7 @@ template <class T, class U> std::vector<U> getAll(std::multimap<T, U> map, T key
 std::string regex_callback_replacer(std::regex regex, const std::string &input,
 									std::function<std::string(std::smatch &)> callback);
 
+void regex_callback_extractor(std::regex regex, const std::string &input, std::function<void(std::smatch &)> callback);
 std::string readCompleteFile(std::string_view filepath);
 
 inline std::string nz(const char *s)