Technical facts

Operating system(s) or programming environment(s)

Lubuntu 15.04 (vivid)

IDE(s):

Qt Creator 3.1.1

Project type:

Console application

C++ standard:

C++11

Compiler(s):

G++ 4.9.2

Libraries used:

STL: GNU ISO C++ Library, version 4.9.2

Qt project file: ./CppStrToXml/CppStrToXml.pro


TEMPLATE = app

CONFIG += console

CONFIG -= app_bundle

CONFIG -= qt



SOURCES += main.cpp





#

#

# Type of compile

#

#



CONFIG(release, debug|release) {

  DEFINES += NDEBUG NTRACE_BILDERBIKKEL

}



QMAKE_CXXFLAGS += -std=c++11 -Wall -Wextra -Weffc++



unix {

  QMAKE_CXXFLAGS += -Werror

}



#

#

# Boost

#

#



win32 {

  INCLUDEPATH += \

    ../../Libraries/boost_1_54_0

}

./CppStrToXml/main.cpp


#include <cassert>

#include <string>

#include <sstream>

#include <vector>



#pragma GCC diagnostic push

#pragma GCC diagnostic ignored "-Weffc++"

#pragma GCC diagnostic ignored "-Wunused-local-typedefs"

#include <boost/lexical_cast.hpp>

#pragma GCC diagnostic pop



///Convert a std::string to single-line XML

///For example, a std::string with tag name "cat_name" and content "Kitty" becomes

/// <cat_name>Kitty</cat_name>

///The data can be converted back with XmlToStr

const std::string StrToXml(

  const std::string& tag_name,

  const std::string& content)

{

  std::stringstream s;

  s << "<"  << tag_name << ">" << content << "</" << tag_name << ">";

  //No test here, as StrToXml is used in testing XmlToStr

  return s.str();

}



///Convert a single-line XML to its content and its tag name

///For example, the XML line "<cat_name>Kitty</cat_name>"

///becomes a std::pair with elements {"cat_name","Kitty"}

///The data can be converted back with StrToXml

const std::pair<std::string,std::string> XmlToStr(const std::string& s)

{

  assert(!s.empty());

  assert(s[0] == '<');

  assert(s[s.size() - 1] == '>');

  assert(s.find('>') != std::string::npos);

  const int tag_name_sz = static_cast<int>(s.find('>')) - 1;

  const std::string tag_name = s.substr(1,tag_name_sz);



  assert(s.find_last_of('/') != std::string::npos);

  const int content_sz = static_cast<int>(s.find_last_of('/')) - tag_name_sz - 3;

  const std::string content = s.substr(tag_name.size() + 2,content_sz);

  const std::pair<std::string,std::string> p { tag_name, content };

  assert(StrToXml(p.first,p.second) == s);

  return p;

}





int main()

{

  const std::vector<std::string> v { "a", "ab", "abc", " ", "" };

  const std::size_t sz = v.size();

  for (std::size_t i=0; i!=sz; ++i)

  {

    const std::string tag_name = v[i];

    for (std::size_t j=0; j!=sz; ++j)

    {

      const std::string content = v[j];

      const std::string xml = StrToXml(tag_name,content);

      assert(XmlToStr(xml).first  == tag_name);

      assert(XmlToStr(xml).second == content);

    }

  }

}

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(C++) StrToXml

Technical facts

Qt project file: ./CppStrToXml/CppStrToXml.pro

./CppStrToXml/main.cpp