file_io.hpp

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#ifndef PCL_COMMON_FILE_IO_IMPL_HPP_
#define PCL_COMMON_FILE_IO_IMPL_HPP_
 
#include <boost/filesystem.hpp>
#include <boost/range/iterator_range.hpp>
 
#include <algorithm>
#include <cstddef>
#include <iostream>
#include <string>
#include <vector>
 
namespace pcl
{
 
void getAllPcdFilesInDirectory(const std::string& directory, std::vector<std::string>& file_names)
{
  boost::filesystem::path p(directory);
  if(boost::filesystem::is_directory(p))
  {
    for(const auto& entry : boost::make_iterator_range(boost::filesystem::directory_iterator(p), {}))
    {
      if (boost::filesystem::is_regular_file(entry))
      {
        if (entry.path().extension() == ".pcd")
          file_names.emplace_back(entry.path().filename().string());
      }
    }
  }
  else
  {
    std::cerr << "Given path is not a directory\n";
    return;
  }
  std::sort(file_names.begin(), file_names.end());
}
 
std::string getFilenameWithoutPath(const std::string& input)
{
  std::size_t filename_start = input.find_last_of('/', static_cast<std::size_t>(-1)) + 1;
  return input.substr(filename_start, input.size()-filename_start);
}
 
std::string getFilenameWithoutExtension(const std::string& input)
{
  std::size_t dot_position = input.find_last_of('.', input.size());
  return input.substr(0, dot_position);
}
 
std::string getFileExtension(const std::string& input)
{
  std::size_t dot_position = input.find_last_of('.', input.size());
  return input.substr(dot_position+1, input.size());
}
 
}  // namespace end
 
#endif