/home/master/UCL/VisualizationLibrary/src/vlCore/FileSystem.cpp

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/*  Visualization Library                                                             */
/*  http://visualizationlibrary.org                                                   */
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#include <vlCore/FileSystem.hpp>
#include <vlCore/DiskDirectory.hpp>
#include <vlCore/GlobalSettings.hpp>

using namespace vl;

//-----------------------------------------------------------------------------
ref<VirtualFile> FileSystem::locateFile(const String& full_path, const String& alternate_path) const
{
  std::vector<String> paths;
  paths.push_back(full_path);
  if (!alternate_path.empty()) 
    paths.push_back(alternate_path + '/' + full_path);
  if( full_path.extractFileName() != full_path )
  {
    paths.push_back(full_path.extractFileName());
    if (!alternate_path.empty()) 
      paths.push_back(alternate_path + '/' + full_path.extractFileName());
  }

  for(unsigned ipath=0; ipath<paths.size(); ++ipath)
  {
    paths[ipath].normalizeSlashes();

    // first look in the "." directory
    ref<DiskFile> disk_file = new DiskFile( paths[ipath] );
    if ( disk_file->exists() )
      return disk_file;

    // iterate backwards
    for( int idir=directories().size(); idir--; )
    {
      // returns the first one found
      ref<VirtualFile> file  = directories()[idir]->file( paths[ipath] );
      if (file)
        return file;
    }
  }

  return NULL;
}
//-----------------------------------------------------------------------------
ref<VirtualDirectory> FileSystem::locateDirectory(const String& name) const
{
  // first look in the "." directory
  ref<DiskDirectory> disk_directory = new DiskDirectory( name );
  if ( disk_directory->exists() )
    return disk_directory;

  // iterate backwards
  for( int idir=directories().size(); idir--; )
  {
    // returns the first one found
    ref<VirtualDirectory> dir = directories()[idir]->subDir(name);
    if (dir)
      return dir;
  }

  return NULL;
}
//-----------------------------------------------------------------------------
void FileSystem::listFilesRecursive(std::vector<String>& file_list ) const
{
  file_list.clear();
  std::vector<String> file_list_part;
  // iterate backwards
  for( int idir=directories().size(); idir--; )
  {
    directories()[idir]->listFilesRecursive(file_list_part);
    file_list.reserve( file_list.size() + file_list_part.size() );
    for(unsigned j=0; j<file_list_part.size(); ++j)
      file_list.push_back( file_list_part[j] );
  }
}
//-----------------------------------------------------------------------------
void FileSystem::listFilesRecursive(std::vector<String>& file_list, const String& match) const
{
  file_list.clear();
  std::vector<String> file_list_part;
  // iterate backwards
  for( int idir=directories().size(); idir--; )
  {
    directories()[idir]->listFilesRecursive(file_list_part, match);
    file_list.reserve( file_list.size() + file_list_part.size() );
    for(unsigned j=0; j<file_list_part.size(); ++j)
      file_list.push_back( file_list_part[j] );
  }
}
//-----------------------------------------------------------------------------