(C++) GetCurrentFolder

 

GetCurrentFolder is a file I/O code snippets to obtain the name of the folder your application runs in.

 

• Download the Qt Creator project 'GetCurrentFolder' (zip)

 

 

 

 

 

GetCurrentFolder using the STL only

 

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#include <iostream> #include <string> #include <string> #include <cassert> //From http://www.richelbilderbeek.nl/CppGetPath.htm //Returns the path, without a trailing backslash '\' const std::string GetPath(const std::string& fileName) {   #ifndef USE_WINDOWS   const int endOfPathIndex = fileName.rfind("/",fileName.size());   #else   const int endOfPathIndex = fileName.rfind("\\",fileName.size());   #endif   assert(endOfPathIndex < static_cast<int>(fileName.size()));   return fileName.substr(0,endOfPathIndex); } //From http://www.richelbilderbeek.nl/CppGetCurrentFolder.htm const std::string GetCurrentFolder(const std::string& s) {   return GetPath(s); } int main(int argc, char *argv[]) {   std::cout << GetCurrentFolder(argv[0]) << '\n'; }

 

Screen output:

 

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/home/richel/qtsdk-2010.04/bin/Projects/Website/CppGetCurrentFolder-build-desktop

 

 

 

 

 

GetCurrentFolder using Boost.Filesystem

 

This version is more elegant and portable.

 

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#include <cassert> #include <iostream> #include <string> #include <boost/filesystem.hpp> //From http://www.richelbilderbeek.nl/CppGetPath.htm const std::string GetPath(const std::string& filename) {   return boost::filesystem::path(filename).parent_path().string(); } //From http://www.richelbilderbeek.nl/CppGetCurrentFolder.htm const std::string GetCurrentFolder(const std::string& s) {   return GetPath(s); } int main(int argc, char *argv[]) {   argc; //To stop compiler warning about unused argument argc   assert(GetPath("/any_path/any_file.cpp")=="/any_path"); //non-Windows   std::cout << GetCurrentFolder(argv[0]) << '\n'; }

 

Screen output:

 

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/home/richel/qtsdk-2010.04/bin/Projects/Website/CppGetCurrentFolder-build-desktop