move tlperl.straw to tlperl

git-svn-id: svn://tug.org/texlive/trunk@18210 c570f23f-e606-0410-a88d-b1316a301751

1 files changed, 274 insertions, 0 deletions

diff --git a/Master/tlpkg/tlperl/lib/File/Spec/OS2.pm b/Master/tlpkg/tlperl/lib/File/Spec/OS2.pm
new file mode 100755
index 00000000000..a8fa63e3c16
--- /dev/null
+++ b/Master/tlpkg/tlperl/lib/File/Spec/OS2.pm
@@ -0,0 +1,274 @@
+package File::Spec::OS2;
+
+use strict;
+use vars qw(@ISA $VERSION);
+require File::Spec::Unix;
+
+$VERSION = '3.30';
+$VERSION = eval $VERSION;
+
+@ISA = qw(File::Spec::Unix);
+
+sub devnull {
+    return "/dev/nul";
+}
+
+sub case_tolerant {
+    return 1;
+}
+
+sub file_name_is_absolute {
+    my ($self,$file) = @_;
+    return scalar($file =~ m{^([a-z]:)?[\\/]}is);
+}
+
+sub path {
+    my $path = $ENV{PATH};
+    $path =~ s:\\:/:g;
+    my @path = split(';',$path);
+    foreach (@path) { $_ = '.' if $_ eq '' }
+    return @path;
+}
+
+sub _cwd {
+    # In OS/2 the "require Cwd" is unnecessary bloat.
+    return Cwd::sys_cwd();
+}
+
+my $tmpdir;
+sub tmpdir {
+    return $tmpdir if defined $tmpdir;
+    my @d = @ENV{qw(TMPDIR TEMP TMP)};	# function call could autovivivy
+    $tmpdir = $_[0]->_tmpdir( @d, '/tmp', '/'  );
+}
+
+sub catdir {
+    my $self = shift;
+    my @args = @_;
+    foreach (@args) {
+	tr[\\][/];
+        # append a backslash to each argument unless it has one there
+        $_ .= "/" unless m{/$};
+    }
+    return $self->canonpath(join('', @args));
+}
+
+sub canonpath {
+    my ($self,$path) = @_;
+    return unless defined $path;
+
+    $path =~ s/^([a-z]:)/\l$1/s;
+    $path =~ s|\\|/|g;
+    $path =~ s|([^/])/+|$1/|g;                  # xx////xx  -> xx/xx
+    $path =~ s|(/\.)+/|/|g;                     # xx/././xx -> xx/xx
+    $path =~ s|^(\./)+(?=[^/])||s;		# ./xx      -> xx
+    $path =~ s|/\Z(?!\n)||
+             unless $path =~ m#^([a-z]:)?/\Z(?!\n)#si;# xx/       -> xx
+    $path =~ s{^/\.\.$}{/};                     # /..    -> /
+    1 while $path =~ s{^/\.\.}{};               # /../xx -> /xx
+    return $path;
+}
+
+
+sub splitpath {
+    my ($self,$path, $nofile) = @_;
+    my ($volume,$directory,$file) = ('','','');
+    if ( $nofile ) {
+        $path =~ 
+            m{^( (?:[a-zA-Z]:|(?:\\\\|//)[^\\/]+[\\/][^\\/]+)? ) 
+                 (.*)
+             }xs;
+        $volume    = $1;
+        $directory = $2;
+    }
+    else {
+        $path =~ 
+            m{^ ( (?: [a-zA-Z]: |
+                      (?:\\\\|//)[^\\/]+[\\/][^\\/]+
+                  )?
+                )
+                ( (?:.*[\\\\/](?:\.\.?\Z(?!\n))?)? )
+                (.*)
+             }xs;
+        $volume    = $1;
+        $directory = $2;
+        $file      = $3;
+    }
+
+    return ($volume,$directory,$file);
+}
+
+
+sub splitdir {
+    my ($self,$directories) = @_ ;
+    split m|[\\/]|, $directories, -1;
+}
+
+
+sub catpath {
+    my ($self,$volume,$directory,$file) = @_;
+
+    # If it's UNC, make sure the glue separator is there, reusing
+    # whatever separator is first in the $volume
+    $volume .= $1
+        if ( $volume =~ m@^([\\/])[\\/][^\\/]+[\\/][^\\/]+\Z(?!\n)@s &&
+             $directory =~ m@^[^\\/]@s
+           ) ;
+
+    $volume .= $directory ;
+
+    # If the volume is not just A:, make sure the glue separator is 
+    # there, reusing whatever separator is first in the $volume if possible.
+    if ( $volume !~ m@^[a-zA-Z]:\Z(?!\n)@s &&
+         $volume =~ m@[^\\/]\Z(?!\n)@      &&
+         $file   =~ m@[^\\/]@
+       ) {
+        $volume =~ m@([\\/])@ ;
+        my $sep = $1 ? $1 : '/' ;
+        $volume .= $sep ;
+    }
+
+    $volume .= $file ;
+
+    return $volume ;
+}
+
+
+sub abs2rel {
+    my($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 = $self->_cwd();
+    } elsif ( ! $self->file_name_is_absolute( $base ) ) {
+        $base = $self->rel2abs( $base ) ;
+    } else {
+        $base = $self->canonpath( $base ) ;
+    }
+
+    # Split up paths
+    my ( $path_volume, $path_directories, $path_file ) = $self->splitpath( $path, 1 ) ;
+    my ( $base_volume, $base_directories ) = $self->splitpath( $base, 1 ) ;
+    return $path unless $path_volume eq $base_volume;
+
+    # Now, remove all leading components that are the same
+    my @pathchunks = $self->splitdir( $path_directories );
+    my @basechunks = $self->splitdir( $base_directories );
+
+    while ( @pathchunks && 
+            @basechunks && 
+            lc( $pathchunks[0] ) eq lc( $basechunks[0] ) 
+          ) {
+        shift @pathchunks ;
+        shift @basechunks ;
+    }
+
+    # No need to catdir, we know these are well formed.
+    $path_directories = CORE::join( '/', @pathchunks );
+    $base_directories = CORE::join( '/', @basechunks );
+
+    # $base_directories 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
+
+    #FA Need to replace between backslashes...
+    $base_directories =~ s|[^\\/]+|..|g ;
+
+    # Glue the two together, using a separator if necessary, and preventing an
+    # empty result.
+
+    #FA Must check that new directories are not empty.
+    if ( $path_directories ne '' && $base_directories ne '' ) {
+        $path_directories = "$base_directories/$path_directories" ;
+    } else {
+        $path_directories = "$base_directories$path_directories" ;
+    }
+
+    return $self->canonpath( 
+        $self->catpath( "", $path_directories, $path_file ) 
+    ) ;
+}
+
+
+sub rel2abs {
+    my ($self,$path,$base ) = @_;
+
+    if ( ! $self->file_name_is_absolute( $path ) ) {
+
+        if ( !defined( $base ) || $base eq '' ) {
+	    $base = $self->_cwd();
+        }
+        elsif ( ! $self->file_name_is_absolute( $base ) ) {
+            $base = $self->rel2abs( $base ) ;
+        }
+        else {
+            $base = $self->canonpath( $base ) ;
+        }
+
+        my ( $path_directories, $path_file ) =
+            ($self->splitpath( $path, 1 ))[1,2] ;
+
+        my ( $base_volume, $base_directories ) =
+            $self->splitpath( $base, 1 ) ;
+
+        $path = $self->catpath( 
+            $base_volume, 
+            $self->catdir( $base_directories, $path_directories ), 
+            $path_file
+        ) ;
+    }
+
+    return $self->canonpath( $path ) ;
+}
+
+1;
+__END__
+
+=head1 NAME
+
+File::Spec::OS2 - methods for OS/2 file specs
+
+=head1 SYNOPSIS
+
+ require File::Spec::OS2; # Done internally by File::Spec if needed
+
+=head1 DESCRIPTION
+
+See L<File::Spec> and L<File::Spec::Unix>.  This package overrides the
+implementation of these methods, not the semantics.
+
+Amongst the changes made for OS/2 are...
+
+=over 4
+
+=item tmpdir
+
+Modifies the list of places temp directory information is looked for.
+
+    $ENV{TMPDIR}
+    $ENV{TEMP}
+    $ENV{TMP}
+    /tmp
+    /
+
+=item splitpath
+
+Volumes can be drive letters or UNC sharenames (\\server\share).
+
+=back
+
+=head1 COPYRIGHT
+
+Copyright (c) 2004 by the Perl 5 Porters.  All rights reserved.
+
+This program is free software; you can redistribute it and/or modify
+it under the same terms as Perl itself.
+
+=cut