- ext
- clib
- socket.pl -- Network socket (TCP and UDP) library
- uid.pl -- User and group management on Unix systems
- unix.pl -- Unix specific operations
- syslog.pl -- Unix syslog interface
- filesex.pl -- Extended operations on files
- uri.pl -- Process URIs
- process.pl -- Create processes and redirect I/O
- time.pl -- Time and alarm library
- sha.pl -- SHA secure hashes
- crypt.pl
- memfile.pl
- uuid.pl -- Universally Unique Identifier (UUID) Library
- hash_stream.pl -- Maintain a hash on a stream
- md5.pl -- MD5 hashes
- prolog_stream.pl -- A stream with Prolog callbacks
- udp_broadcast.pl -- A UDP broadcast proxy
- streampool.pl -- Input multiplexing
- cgi.pl -- Read CGI parameters
- rlimit.pl
- clib
- relative_file_name(+Path:atom, +RelToFile:atom, -RelPath:atom) is det
- relative_file_name(-Path:atom, +RelToFile:atom, +RelPath:atom) is det
- True when RelPath is Path, relative to the file RelToFile. Path and
RelTo are first handed to absolute_file_name/2, which makes the
absolute and canonical. Below are two examples:
?- relative_file_name('/home/janw/nice', '/home/janw/deep/dir/file', Path). Path = '../../nice'. ?- relative_file_name(Path, '/home/janw/deep/dir/file', '../../nice'). Path = '/home/janw/nice'.Add a terminating
/to get a path relative to a directory, e.g.?- relative_file_name('/home/janw/deep/dir/file', './', Path). Path = 'deep/dir/file'.- Arguments:
-
All - paths must be in canonical POSIX notation, i.e., using / to separate segments in the path. See prolog_to_os_filename/2. - bug
- - It would probably have been cleaner to use a directory as second argument. We can not do such dynamically as this predicate is defined as a syntactical operation, which implies it may be used for non-existing paths and URLs.