/* Copyright (c) 2018 Albert S. 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 the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ #include #include #include #include #include #include #include "parser.h" #include "utils.h" #include "htmllink.h" std::vector Parser::extractHeadlines(const std::string &content) const { std::vector 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; Headline h; h.level = utils::toUInt(smatch.str(1)); h.title = smatch.str(2); result.push_back(h); } return result; } std::vector Parser::extractCategories(const std::string &content) const { std::vector result; std::string reg = R"(\[category\](.*?)\[/category\])"; 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; result.emplace_back(smatch.str(1)); } return result; } std::string Parser::extractCommand(std::string cmdname, const std::string &content) const { std::string cmd = "[cmd:" + cmdname + "]"; std::string cmdend = "[/cmd:" + cmdname + "]"; std::string_view view = content; size_t pos = 0; if((pos = view.find(cmd)) != std::string::npos) { view.remove_prefix(pos); view.remove_prefix(cmd.size()); if((pos = view.find(cmdend)) != std::string::npos) { auto result = view.substr(0, pos); return std::string{result}; } } return ""; } std::string Parser::processLink(const PageDao &pageDao, UrlProvider &urlProvider, std::smatch &match) const { std::string linktag = match.str(1); std::string inside = match.str(2); std::vector splitted = utils::split(inside, '|'); HtmlLink htmllink; if(splitted.size() == 2) { htmllink.innervalue = splitted[1]; htmllink.href = splitted[0]; } else { htmllink.innervalue = inside; htmllink.href = inside; } if(linktag == "wikilink") { if(pageDao.exists(htmllink.href)) { htmllink.cssclass = "exists"; } else { htmllink.cssclass = "notexists"; } htmllink.href = urlProvider.page(htmllink.href); } return htmllink.render(); } std::string Parser::parse(const PageDao &pagedao, UrlProvider &provider, const std::string &content, const std::function &callback) const { std::string result; // we don't care about commands, but we nevertheless replace them with empty strings std::regex tagfinder( R"(\[(b|i|u|li||ul|ol|link|wikilink|h\d|cmd:rename|cmd:redirect|cmd:pagetitle|category|dynamic:postlist|dynamic:includepage)*?\]((\s|\S)*?)\[/\1])"); result = utils::regex_callback_replacer( tagfinder, content, [&](std::smatch &match) { 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, callback); if(std::find(std::begin(justreplace), std::end(justreplace), tag) != std::end(justreplace)) { return "<" + tag + ">" + content + ""; } if(tag == "link" || tag == "wikilink") { return this->processLink( pagedao, provider, match); // TODO: recreate this so we don't check inside the function stuff again } if(tag[0] == 'h') { return "<" + tag + " id='" + content + "'>" + content + ""; } return callback(tag, content); }); result = utils::strreplace(result, "\r\n", "
"); return result; }