(C++) HtmlPage

 

 

HtmlPage is a class for processing an HTML page.

Technical facts

 

 

 

 

 

 

./CppHtmlPage/CppHtmlPage.pri

 

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INCLUDEPATH += \     ../../Classes/CppHtmlPage SOURCES += \     ../../Classes/CppHtmlPage/htmlpage.cpp HEADERS  += \     ../../Classes/CppHtmlPage/htmlpage.h OTHER_FILES += \     ../../Classes/CppHtmlPage/Licence.txt

 

 

 

 

 

./CppHtmlPage/htmlpage.h

 

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//--------------------------------------------------------------------------- /* HtmlPage, HTML page class Copyright 2011-2015 Richel Bilderbeek This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ //--------------------------------------------------------------------------- //From http://www.richelbilderbeek.nl/CppHtmlPage.htm //--------------------------------------------------------------------------- #ifndef HTMLPAGE_H #define HTMLPAGE_H #include <string> #include <vector> #pragma GCC diagnostic push #pragma GCC diagnostic ignored "-Weffc++" #include <boost/checked_delete.hpp> #pragma GCC diagnostic pop namespace ribi { struct HtmlPage {   explicit HtmlPage(const std::string& filename);   HtmlPage(const HtmlPage&) = delete;   HtmlPage& operator=(const HtmlPage&) = delete;   ///Obtain the filename of the HTML page   const std::string& GetFilename() const noexcept { return m_filename; }   ///Obtain the title of the HTML page   const std::string& GetTitle() const noexcept { return m_title; }   ///Obtain the version of this class   static std::string GetVersion() noexcept;   ///Obtain the version history of this class   static std::vector<std::string> GetVersionHistory() noexcept;   ///Replace all occurrences of a string within a string   ///From http://www.richelbilderbeek.nl/CppReplaceAll.htm   static std::string ReplaceAll(     std::string s,     const std::string& replaceWhat,     const std::string& replaceWithWhat) noexcept;   private:   ~HtmlPage() noexcept {}   friend void boost::checked_delete<>(HtmlPage* x);   friend void boost::checked_delete<>(const HtmlPage* x);   ///The filename of the HTML page   const std::string m_filename;   ///The title of the HTML page   const std::string m_title;   ///Find the <title> in an HTML document   static std::string FindTitle(const std::string& filename) noexcept;   #ifndef NDEBUG   static void Test() noexcept;   #endif }; bool operator<(const HtmlPage& lhs, const HtmlPage& rhs) noexcept; } //~namespace ribi #endif // HTMLPAGE_H

 

 

 

 

 

./CppHtmlPage/htmlpage.cpp

 

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//--------------------------------------------------------------------------- /* HtmlPage, HTML page class Copyright 2011-2015 Richel Bilderbeek This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ //--------------------------------------------------------------------------- //From http://www.richelbilderbeek.nl/CppHtmlPage.htm //--------------------------------------------------------------------------- #pragma GCC diagnostic push #pragma GCC diagnostic ignored "-Weffc++" #pragma GCC diagnostic ignored "-Wunused-local-typedefs" #include "htmlpage.h" #include <fstream> #include <iostream> #include <boost/algorithm/string.hpp> #include <boost/xpressive/xpressive.hpp> #include <QDir> #include <QFile> #include "fileio.h" #pragma GCC diagnostic pop ribi::HtmlPage::HtmlPage(const std::string& filename)   : m_filename{filename},     m_title{FindTitle(filename)} {   #ifndef NDEBUG   Test();   #endif   assert(ribi::fileio::FileIo().IsRegularFile(filename)); } std::string ribi::HtmlPage::FindTitle(const std::string& filename) noexcept {   const boost::xpressive::sregex title_regex     = boost::xpressive::sregex::compile("<title>.*</title>");   //Copy all filenames matching the regex in the resulting std::vector   const std::vector<std::string> v = ribi::fileio::FileIo().FileToVector(filename);   for (const std::string s: v)   {     if (boost::xpressive::regex_search(s,title_regex))     {       std::string t = s;       //Trim leading whitespace       while (!std::isgraph(t[0])) t = t.substr(1,t.size() - 1);       //Trim trailing whitespace       while (!std::isgraph(t[t.size()-1])) t.resize(t.size() - 1);       //Extract title       assert(t.substr(0,7)=="<title>");       assert(t.substr(t.size()-8,8)=="</title>");       const std::string title = t.substr(7,t.size()-8-7);       const std::string title_clean = ReplaceAll(title,"&amp;","&");       return title_clean;     }   }   return {}; } std::string ribi::HtmlPage::GetVersion() noexcept {   return "1.2"; } std::vector<std::string> ribi::HtmlPage::GetVersionHistory() noexcept {   return {     "2011-xx-xx: version 1.0: initial version",     "2012-08-12: version 1.1: started versioning this class",     "2013-09-02: version 1.2: replaced Boost.Regex by Boost.Xpressive"   }; } std::string ribi::HtmlPage::ReplaceAll(   std::string s,   const std::string& replaceWhat,   const std::string& replaceWithWhat) noexcept {   while(1)   {     const int pos = s.find(replaceWhat);     if (pos==-1) break;     s.replace(pos,replaceWhat.size(),replaceWithWhat);   }   return s; } #ifndef NDEBUG void ribi::HtmlPage::Test() noexcept {   {     static bool is_tested{false};     if (is_tested) return;     is_tested = true;   }   //Test finding   {     const std::string filename { "tmp.txt" };     std::ofstream file(filename);     file << "Nothing";     file.close();     assert(FindTitle(filename)=="");     std::remove(filename.c_str());   }   {     const std::string filename { "tmp.txt" };     std::ofstream file(filename);     file << "Nothing\n";     file << "<title>Something</title>\n";     file << "Nothing\n";     file.close();     assert(FindTitle(filename)=="Something");     std::remove(filename.c_str());   } } #endif bool ribi::operator<(const HtmlPage& lhs, const HtmlPage& rhs) noexcept {   //Case insensitive compare   return boost::algorithm::to_lower_copy(lhs.GetTitle())        < boost::algorithm::to_lower_copy(rhs.GetTitle()); }