DirSearchPath.cpp

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// $Id: DirSearchPath.cpp,v 1.2 2007/10/16 15:37:25 marcocle Exp $

//<<<<<< INCLUDES                                                       >>>>>>
#include <algorithm>  /* find */
#include <iostream>
#include "boost/filesystem/operations.hpp"
#include "boost/tokenizer.hpp"
#include "GaudiKernel/DirSearchPath.h"

using namespace std;

using boost::filesystem::filesystem_error;
using boost::filesystem::exists;
using boost::filesystem::is_directory;

using boost::tokenizer;
using boost::char_separator;

//structors
DirSearchPath::DirSearchPath(const std::string& stringifiedPath, const char* separator) {
  addCWD(); //FIXME is this a good idea?

  typedef  tokenizer<char_separator<char> > Tokenizer;

  Tokenizer tok(stringifiedPath, char_separator<char>(separator));


  //add names to dir container, filtering dir names to remove invalid ones
  //notice how we iterate over all tokens even if there is an illegal one
  Tokenizer::iterator it = tok.begin();
  while(it != tok.end()) {
    try {
      //path p( *(it++), boost::filesystem::native);
      // For some reason native() does not work with boost 1.31. Changed to no_check and cross the fingers....
      path p( *(it++), boost::filesystem::no_check);
      add(p);
    }
    catch (boost::filesystem::filesystem_error /*err*/) {
    }
  }
}

//modifiers
// bool DirSearchPath::add(const std::string& dirName) {
//   bool rc(false);
//   try {
//     rc=add(path(dirName));
//   } catch (const filesystem_error& err) {
// #ifndef NDEBUG
//     cerr << "DirSearchPath::DirSearchPath: ERROR adding dir "
//       << err.what() << endl;
//     throw err;
// #endif
//   }
//   return rc;
// }

bool DirSearchPath::addCWD() {
  return add(boost::filesystem::current_path());
}

bool DirSearchPath::add(const path& dir) {
  bool dirExist(existsDir(dir));
  //add dir to path even if dir does not (yet) exist,
  // but don't add twice same dir
  if (m_dirs.end() == std::find_if(m_dirs.begin(), m_dirs.end(), eqPath(dir)))
    m_dirs.push_back(dir);
  return dirExist;
}

//accessors
bool DirSearchPath::find(const string& fileName, string& fullFileName) const {
  bool rc(false);
  try {
    path fileFound;
    if ( (rc = find(path(fileName), fileFound)) )
      fullFileName = fileFound.native_directory_string();
  } catch (...) {}
  return rc;
}

//accessors
bool DirSearchPath::find(const path& file, path& fileFound) const {
  bool rc(false);
  for (std::list<path>::const_iterator iDir=m_dirs.begin(); iDir!=m_dirs.end(); ++iDir) {
    path full(*iDir / file);
    if (exists(full)) {
      fileFound = full;
      rc = true;
      break;
    }
  }
  return rc;
}

//accessors
std::list<DirSearchPath::path>
DirSearchPath::find_all(const path& file) const {
  std::list<path> found;
  for (std::list<path>::const_iterator iDir=m_dirs.begin(); iDir!=m_dirs.end(); ++iDir) {
    path full(*iDir / file);
    if (exists(full)) {
      found.push_back(full);
    }
  }
  return found;
}

//helpers
bool DirSearchPath::existsDir(const std::string& dirName) {
  bool rc(false);
  try {
    rc=is_directory(path(dirName));
  } catch(...) {}
  return rc;
}
bool DirSearchPath::existsDir(const path& dir) {
  return (exists(dir) && is_directory(dir));
}