System::PathResolver Class Reference

#include <PathResolver.h>

List of all members.

Public Types
enum	SearchPathStatus { Ok, EnvironmentVariableUndefined, UnknownDirectory }
enum	SearchType { LocalSearch, RecursiveSearch }
Static Public Member Functions
static std::string	find_file (const std::string &logical_file_name, const std::string &search_path, SearchType search_type=LocalSearch)
static std::string	find_file_from_list (const std::string &logical_file_name, const std::string &search_list, SearchType search_type=LocalSearch)
static std::string	find_directory (const std::string &logical_file_name, const std::string &search_path, SearchType search_type=LocalSearch)
static std::string	find_directory_from_list (const std::string &logical_file_name, const std::string &search_list, SearchType search_type=LocalSearch)
static SearchPathStatus	check_search_path (const std::string &search_path)

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Detailed Description

Definition at line 10 of file PathResolver.h.

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Member Enumeration Documentation

enum System::PathResolver::SearchPathStatus

Enumerator:

Ok
EnvironmentVariableUndefined
UnknownDirectory

Definition at line 14 of file PathResolver.h.

    {
      Ok,
      EnvironmentVariableUndefined,
      UnknownDirectory
    } SearchPathStatus;

enum System::PathResolver::SearchType

Enumerator:

LocalSearch
RecursiveSearch

Definition at line 21 of file PathResolver.h.

    {
      LocalSearch,
      RecursiveSearch
    } SearchType;

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Member Function Documentation

PathResolver::SearchPathStatus System::PathResolver::check_search_path

(

const std::string &

search_path

)

[static]

• search_path the name of a path-like environment variable

Returns:

the result of the verification. Can be one of Ok, EnvironmentVariableUndefined, UnknownDirectory

Definition at line 201 of file PathResolver.cpp.

{
  const char* path_env = ::getenv (search_path.c_str ());

  if (path_env == 0) return (EnvironmentVariableUndefined);

  std::string path_list (path_env);

  vector<string> spv;
  boost::split( spv, path_list, boost::is_any_of( path_separator ), boost::token_compress_on);
  vector<string>::iterator itr=spv.begin();

  try {
    for (; itr!= spv.end(); ++itr) {
      bf::path pp(*itr);
      if (!is_directory(pp)) {
        return (UnknownDirectory);
      }
    }
  } catch(bf::filesystem_error /*err*/) {
    return (UnknownDirectory);
  }

  return ( Ok );
}

string System::PathResolver::find_directory	(	const std::string &	logical_file_name,
		const std::string &	search_path,
		SearchType	search_type = LocalSearch
	)			[static]

• logical_file_name the name of the directory to locate in the search path
• search_path the name of a path-like environment variable
• search_type characterizes the type of search. Can be either LocalSearch or RecursiveSearch

Returns:

the physical name of the located directory or empty string if not found

Definition at line 164 of file PathResolver.cpp.

{
  const char* path_env = ::getenv (search_path.c_str ());

  std::string path_list;

  if (path_env != 0)
    {
      path_list = path_env;
    }

  return (find_directory_from_list (logical_file_name, path_list, search_type));
}

string System::PathResolver::find_directory_from_list	(	const std::string &	logical_file_name,
		const std::string &	search_list,
		SearchType	search_type = LocalSearch
	)			[static]

• logical_file_name the name of the directory to locate in the search path
• search_list the prioritized list of possible locations separated by the usual path separator
• search_type characterizes the type of search. Can be either LocalSearch or RecursiveSearch

Returns:

the physical name of the located directory or empty string if not found

Definition at line 183 of file PathResolver.cpp.

{
  std::string result;

  if (!PR_find (logical_file_name, search_list, PR_directory, search_type, result))
  {
    result = "";
  }

  return (result);
}

string System::PathResolver::find_file	(	const std::string &	logical_file_name,
		const std::string &	search_path,
		SearchType	search_type = LocalSearch
	)			[static]

• logical_file_name the name of the file to locate in the search path
• search_path the name of a path-like environment variable
• search_type characterizes the type of search. Can be either LocalSearch or RecursiveSearch

Returns:

the physical name of the located file or empty string if not found

Definition at line 119 of file PathResolver.cpp.

                                      {

  const char* path_env = ::getenv (search_path.c_str ());

  std::string path_list;

  if (path_env != 0)
  {
    path_list = path_env;
  }

  return (find_file_from_list (logical_file_name, path_list, search_type));
}

std::string System::PathResolver::find_file_from_list	(	const std::string &	logical_file_name,
		const std::string &	search_list,
		SearchType	search_type = LocalSearch
	)			[static]

• logical_file_name the name of the file to locate in the search path
• search_list the prioritized list of possible locations separated by the usual path separator
• search_type characterizes the type of search. Can be either LocalSearch or RecursiveSearch

Returns:

the physical name of the located file or empty string if not found

Definition at line 138 of file PathResolver.cpp.

{
  std::string result("");

  bf::path lfn( logical_file_name );

  /* bool found = */
  PR_find (lfn, search_list, PR_regular_file, search_type, result);

  // The following functionality was in the original PathResolver, but I believe
  // that it's WRONG. It extracts the filename of the requested item, and searches
  // for that if the preceding search fails. i.e., if you're looking for "B/a.txt",
  // and that fails, it will look for just "a.txt" in the search list.

  // if (! found && lfn.filename() != lfn ) {
  //   result = "";
  //   PR_find (lfn.filename(), search_list, PR_regular_file, search_type, result);
  // }

  return (result);
}

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The documentation for this class was generated from the following files:

• /afs/cern.ch/sw/Gaudi/releases/GAUDI/GAUDI_v22r0/GaudiKernel/GaudiKernel/PathResolver.h
• /afs/cern.ch/sw/Gaudi/releases/GAUDI/GAUDI_v22r0/GaudiKernel/src/Lib/PathResolver.cpp