File::Spec::Unix - File::Spec for Unix, base for other File::Spec modules |
File::Spec::Unix - File::Spec for Unix, base for other File::Spec modules
require File::Spec::Unix; # Done automatically by File::Spec
Methods for manipulating file specifications. Other File::Spec modules, such as File::Spec::Mac, inherit from File::Spec::Unix and override specific methods.
canonpath()
$cpath = File::Spec->canonpath( $path ) ;
catdir()
$ENV{TMPDIR} /tmp
Since perl 5.8.0, if running under taint mode, and if $ENV{TMPDIR} is tainted, it is not used.
This does not consult the local filesystem on Unix, Win32, OS/2 or Mac OS (Classic). It does consult the working environment for VMS (see file_name_is_absolute in the File::Spec::VMS manpage).
($volume,$directories,$file) = File::Spec->splitpath( $path ); ($volume,$directories,$file) = File::Spec->splitpath( $path, $no_file );
Splits a path in to volume, directory, and filename portions. On systems with no concept of volume, returns undef for volume.
For systems with no syntax differentiating filenames from directories, assumes that the last file is a path unless $no_file is true or a trailing separator or /. or /.. is present. On Unix this means that $no_file true makes this return ( '', $path, '' ).
The directory portion may or may not be returned with a trailing '/'.
The results can be passed to catpath() to get back a path equivalent to (usually identical to) the original path.
@dirs = File::Spec->splitdir( $directories );
$directories must be only the directory portion of the path on systems that have the concept of a volume or that have path syntax that differentiates files from directories.
Unlike just splitting the directories on the separator, empty
directory names (''
) can be returned, because these are significant
on some OSs.
On Unix,
File::Spec->splitdir( "/a/b//c/" );
Yields:
( '', 'a', 'b', '', 'c', '' )
catpath()
$rel_path = File::Spec->abs2rel( $path ) ; $rel_path = File::Spec->abs2rel( $path, $base ) ;
If $base is not present or '', then cwd() is used. If $base is relative, then it is converted to absolute form using rel2abs(). This means that it is taken to be relative to cwd().
On systems with the concept of a volume, this assumes that both paths are on the $destination volume, and ignores the $base volume.
On systems that have a grammar that indicates filenames, this ignores the $base filename as well. Otherwise all path components are assumed to be directories.
If $path is relative, it is converted to absolute form using rel2abs(). This means that it is taken to be relative to cwd().
No checks against the filesystem are made. On VMS, there is interaction with the working environment, as logicals and macros are expanded.
Based on code written by Shigio Yamaguchi.
rel2abs()
$abs_path = File::Spec->rel2abs( $path ) ; $abs_path = File::Spec->rel2abs( $path, $base ) ;
If $base is not present or '', then cwd() is used. If $base is relative, then it is converted to absolute form using rel2abs(). This means that it is taken to be relative to cwd().
On systems with the concept of a volume, this assumes that both paths are on the $base volume, and ignores the $path volume.
On systems that have a grammar that indicates filenames, this ignores the $base filename as well. Otherwise all path components are assumed to be directories.
If $path is absolute, it is cleaned up and returned using canonpath().
No checks against the filesystem are made. On VMS, there is interaction with the working environment, as logicals and macros are expanded.
Based on code written by Shigio Yamaguchi.
File::Spec::Unix - File::Spec for Unix, base for other File::Spec modules |