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Diffstat (limited to 'contrib/perl5/lib/File/Spec/Unix.pm')
| -rw-r--r-- | contrib/perl5/lib/File/Spec/Unix.pm | 458 |
1 files changed, 0 insertions, 458 deletions
diff --git a/contrib/perl5/lib/File/Spec/Unix.pm b/contrib/perl5/lib/File/Spec/Unix.pm deleted file mode 100644 index a81c533..0000000 --- a/contrib/perl5/lib/File/Spec/Unix.pm +++ /dev/null @@ -1,458 +0,0 @@ -package File::Spec::Unix; - -use strict; -use vars qw($VERSION); - -$VERSION = '1.2'; - -use Cwd; - -=head1 NAME - -File::Spec::Unix - methods used by File::Spec - -=head1 SYNOPSIS - - require File::Spec::Unix; # Done automatically by File::Spec - -=head1 DESCRIPTION - -Methods for manipulating file specifications. - -=head1 METHODS - -=over 2 - -=item canonpath - -No physical check on the filesystem, but a logical cleanup of a -path. On UNIX eliminated successive slashes and successive "/.". - - $cpath = File::Spec->canonpath( $path ) ; - -=cut - -sub canonpath { - my ($self,$path) = @_; - $path =~ s|/+|/|g unless($^O eq 'cygwin'); # xx////xx -> xx/xx - $path =~ s|(/\.)+/|/|g; # xx/././xx -> xx/xx - $path =~ s|^(\./)+||s unless $path eq "./"; # ./xx -> xx - $path =~ s|^/(\.\./)+|/|s; # /../../xx -> xx - $path =~ s|/\Z(?!\n)|| unless $path eq "/"; # xx/ -> xx - return $path; -} - -=item catdir - -Concatenate two or more directory names to form a complete path ending -with a directory. But remove the trailing slash from the resulting -string, because it doesn't look good, isn't necessary and confuses -OS2. Of course, if this is the root directory, don't cut off the -trailing slash :-) - -=cut - -sub catdir { - my $self = shift; - my @args = @_; - foreach (@args) { - # append a slash to each argument unless it has one there - $_ .= "/" if $_ eq '' || substr($_,-1) ne "/"; - } - return $self->canonpath(join('', @args)); -} - -=item catfile - -Concatenate one or more directory names and a filename to form a -complete path ending with a filename - -=cut - -sub catfile { - my $self = shift; - my $file = pop @_; - return $file unless @_; - my $dir = $self->catdir(@_); - $dir .= "/" unless substr($dir,-1) eq "/"; - return $dir.$file; -} - -=item curdir - -Returns a string representation of the current directory. "." on UNIX. - -=cut - -sub curdir { - return "."; -} - -=item devnull - -Returns a string representation of the null device. "/dev/null" on UNIX. - -=cut - -sub devnull { - return "/dev/null"; -} - -=item rootdir - -Returns a string representation of the root directory. "/" on UNIX. - -=cut - -sub rootdir { - return "/"; -} - -=item tmpdir - -Returns a string representation of the first writable directory -from the following list or "" if none are writable: - - $ENV{TMPDIR} - /tmp - -=cut - -my $tmpdir; -sub tmpdir { - return $tmpdir if defined $tmpdir; - foreach ($ENV{TMPDIR}, "/tmp") { - next unless defined && -d && -w _; - $tmpdir = $_; - last; - } - $tmpdir = '' unless defined $tmpdir; - return $tmpdir; -} - -=item updir - -Returns a string representation of the parent directory. ".." on UNIX. - -=cut - -sub updir { - return ".."; -} - -=item no_upwards - -Given a list of file names, strip out those that refer to a parent -directory. (Does not strip symlinks, only '.', '..', and equivalents.) - -=cut - -sub no_upwards { - my $self = shift; - return grep(!/^\.{1,2}\Z(?!\n)/s, @_); -} - -=item case_tolerant - -Returns a true or false value indicating, respectively, that alphabetic -is not or is significant when comparing file specifications. - -=cut - -sub case_tolerant { - return 0; -} - -=item file_name_is_absolute - -Takes as argument a path and returns true if it is an absolute path. - -This does not consult the local filesystem on Unix, Win32, or OS/2. It -does sometimes on MacOS (see L<File::Spec::MacOS/file_name_is_absolute>). -It does consult the working environment for VMS (see -L<File::Spec::VMS/file_name_is_absolute>). - -=cut - -sub file_name_is_absolute { - my ($self,$file) = @_; - return scalar($file =~ m:^/:s); -} - -=item path - -Takes no argument, returns the environment variable PATH as an array. - -=cut - -sub path { - my @path = split(':', $ENV{PATH}); - foreach (@path) { $_ = '.' if $_ eq '' } - return @path; -} - -=item join - -join is the same as catfile. - -=cut - -sub join { - my $self = shift; - return $self->catfile(@_); -} - -=item splitpath - - ($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 ( '', $path, '' ). - -The directory portion may or may not be returned with a trailing '/'. - -The results can be passed to L</catpath()> to get back a path equivalent to -(usually identical to) the original path. - -=cut - -sub splitpath { - my ($self,$path, $nofile) = @_; - - my ($volume,$directory,$file) = ('','',''); - - if ( $nofile ) { - $directory = $path; - } - else { - $path =~ m|^ ( (?: .* / (?: \.\.?\Z(?!\n) )? )? ) ([^/]*) |xs; - $directory = $1; - $file = $2; - } - - return ($volume,$directory,$file); -} - - -=item splitdir - -The opposite of L</catdir()>. - - @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 (C<''>) can be returned, because these are significant -on some OSs (e.g. MacOS). - -On Unix, - - File::Spec->splitdir( "/a/b//c/" ); - -Yields: - - ( '', 'a', 'b', '', 'c', '' ) - -=cut - -sub splitdir { - my ($self,$directories) = @_ ; - # - # split() likes to forget about trailing null fields, so here we - # check to be sure that there will not be any before handling the - # simple case. - # - if ( $directories !~ m|/\Z(?!\n)| ) { - return split( m|/|, $directories ); - } - else { - # - # since there was a trailing separator, add a file name to the end, - # then do the split, then replace it with ''. - # - my( @directories )= split( m|/|, "${directories}dummy" ) ; - $directories[ $#directories ]= '' ; - return @directories ; - } -} - - -=item catpath - -Takes volume, directory and file portions and returns an entire path. Under -Unix, $volume is ignored, and directory and file are catenated. A '/' is -inserted if need be. On other OSs, $volume is significant. - -=cut - -sub catpath { - my ($self,$volume,$directory,$file) = @_; - - if ( $directory ne '' && - $file ne '' && - substr( $directory, -1 ) ne '/' && - substr( $file, 0, 1 ) ne '/' - ) { - $directory .= "/$file" ; - } - else { - $directory .= $file ; - } - - return $directory ; -} - -=item abs2rel - -Takes a destination path and an optional base path returns a relative path -from the base path to the destination path: - - $rel_path = File::Spec->abs2rel( $path ) ; - $rel_path = File::Spec->abs2rel( $path, $base ) ; - -If $base is not present or '', then L<cwd()> is used. If $base is relative, -then it is converted to absolute form using L</rel2abs()>. This means that it -is taken to be relative to L<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 $path is relative, it is converted to absolute form using L</rel2abs()>. -This means that it is taken to be relative to L<cwd()>. - -No checks against the filesystem are made on most systems. On MacOS, -the filesystem may be consulted (see -L<File::Spec::MacOS/file_name_is_absolute>). On VMS, there is -interaction with the working environment, as logicals and -macros are expanded. - -Based on code written by Shigio Yamaguchi. - -=cut - -sub abs2rel { - my($self,$path,$base) = @_; - - # Clean up $path - if ( ! $self->file_name_is_absolute( $path ) ) { - $path = $self->rel2abs( $path ) ; - } - else { - $path = $self->canonpath( $path ) ; - } - - # Figure out the effective $base and clean it up. - if ( !defined( $base ) || $base eq '' ) { - $base = cwd() ; - } - elsif ( ! $self->file_name_is_absolute( $base ) ) { - $base = $self->rel2abs( $base ) ; - } - else { - $base = $self->canonpath( $base ) ; - } - - # Now, remove all leading components that are the same - my @pathchunks = $self->splitdir( $path); - my @basechunks = $self->splitdir( $base); - - while (@pathchunks && @basechunks && $pathchunks[0] eq $basechunks[0]) { - shift @pathchunks ; - shift @basechunks ; - } - - $path = CORE::join( '/', @pathchunks ); - $base = CORE::join( '/', @basechunks ); - - # $base now contains the directories the resulting relative path - # must ascend out of before it can descend to $path_directory. So, - # replace all names with $parentDir - $base =~ s|[^/]+|..|g ; - - # Glue the two together, using a separator if necessary, and preventing an - # empty result. - if ( $path ne '' && $base ne '' ) { - $path = "$base/$path" ; - } else { - $path = "$base$path" ; - } - - return $self->canonpath( $path ) ; -} - -=item rel2abs - -Converts a relative path to an absolute path. - - $abs_path = File::Spec->rel2abs( $path ) ; - $abs_path = File::Spec->rel2abs( $path, $base ) ; - -If $base is not present or '', then L<cwd()> is used. If $base is relative, -then it is converted to absolute form using L</rel2abs()>. This means that it -is taken to be relative to L<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 $path is absolute, it is cleaned up and returned using L</canonpath()>. - -No checks against the filesystem are made on most systems. On MacOS, -the filesystem may be consulted (see -L<File::Spec::MacOS/file_name_is_absolute>). On VMS, there is -interaction with the working environment, as logicals and -macros are expanded. - -Based on code written by Shigio Yamaguchi. - -=cut - -sub rel2abs { - my ($self,$path,$base ) = @_; - - # Clean up $path - if ( ! $self->file_name_is_absolute( $path ) ) { - # Figure out the effective $base and clean it up. - if ( !defined( $base ) || $base eq '' ) { - $base = cwd() ; - } - elsif ( ! $self->file_name_is_absolute( $base ) ) { - $base = $self->rel2abs( $base ) ; - } - else { - $base = $self->canonpath( $base ) ; - } - - # Glom them together - $path = $self->catdir( $base, $path ) ; - } - - return $self->canonpath( $path ) ; -} - - -=back - -=head1 SEE ALSO - -L<File::Spec> - -=cut - -1; |
