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Diffstat (limited to 'Master/tlpkg/tlperl/lib/File/Spec/OS2.pm')
| -rwxr-xr-x | Master/tlpkg/tlperl/lib/File/Spec/OS2.pm | 274 |
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 |