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package File::Spec::OS2; |
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|
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use strict; |
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use vars qw(@ISA $VERSION); |
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require File::Spec::Unix; |
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|
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$VERSION = '1.2'; |
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|
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@ISA = qw(File::Spec::Unix); |
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|
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sub devnull { |
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return "/dev/nul"; |
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} |
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|
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sub case_tolerant { |
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return 1; |
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} |
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|
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sub file_name_is_absolute { |
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my ($self,$file) = @_; |
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return scalar($file =~ m{^([a-z]:)?[\\/]}is); |
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} |
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|
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sub path { |
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my $path = $ENV{PATH}; |
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$path =~ s:\\:/:g; |
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my @path = split(';',$path); |
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foreach (@path) { $_ = '.' if $_ eq '' } |
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return @path; |
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} |
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|
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sub _cwd { |
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# In OS/2 the "require Cwd" is unnecessary bloat. |
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return Cwd::sys_cwd(); |
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} |
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|
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my $tmpdir; |
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sub tmpdir { |
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return $tmpdir if defined $tmpdir; |
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my $self = shift; |
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$tmpdir = $self->_tmpdir( @ENV{qw(TMPDIR TEMP TMP)}, |
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'/tmp', |
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'/' ); |
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} |
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|
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sub catdir { |
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my $self = shift; |
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my @args = @_; |
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foreach (@args) { |
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tr[\\][/]; |
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# append a backslash to each argument unless it has one there |
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$_ .= "/" unless m{/$}; |
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} |
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return $self->canonpath(join('', @args)); |
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} |
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|
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sub canonpath { |
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my ($self,$path) = @_; |
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$path =~ s/^([a-z]:)/\l$1/s; |
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$path =~ s|\\|/|g; |
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$path =~ s|([^/])/+|$1/|g; # xx////xx -> xx/xx |
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$path =~ s|(/\.)+/|/|g; # xx/././xx -> xx/xx |
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$path =~ s|^(\./)+(?=[^/])||s; # ./xx -> xx |
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$path =~ s|/\Z(?!\n)|| |
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unless $path =~ m#^([a-z]:)?/\Z(?!\n)#si;# xx/ -> xx |
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$path =~ s{^/\.\.$}{/}; # /.. -> / |
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1 while $path =~ s{^/\.\.}{}; # /../xx -> /xx |
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return $path; |
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} |
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|
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|
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sub splitpath { |
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my ($self,$path, $nofile) = @_; |
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my ($volume,$directory,$file) = ('','',''); |
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if ( $nofile ) { |
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$path =~ |
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m{^( (?:[a-zA-Z]:|(?:\\\\|//)[^\\/]+[\\/][^\\/]+)? ) |
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(.*) |
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}xs; |
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$volume = $1; |
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$directory = $2; |
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} |
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else { |
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$path =~ |
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m{^ ( (?: [a-zA-Z]: | |
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(?:\\\\|//)[^\\/]+[\\/][^\\/]+ |
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)? |
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) |
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( (?:.*[\\\\/](?:\.\.?\Z(?!\n))?)? ) |
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(.*) |
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}xs; |
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$volume = $1; |
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$directory = $2; |
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$file = $3; |
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} |
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|
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return ($volume,$directory,$file); |
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} |
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|
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|
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sub splitdir { |
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my ($self,$directories) = @_ ; |
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split m|[\\/]|, $directories, -1; |
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} |
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|
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|
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sub catpath { |
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my ($self,$volume,$directory,$file) = @_; |
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|
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# If it's UNC, make sure the glue separator is there, reusing |
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# whatever separator is first in the $volume |
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$volume .= $1 |
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if ( $volume =~ m@^([\\/])[\\/][^\\/]+[\\/][^\\/]+\Z(?!\n)@s && |
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$directory =~ m@^[^\\/]@s |
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) ; |
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|
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$volume .= $directory ; |
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|
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# If the volume is not just A:, make sure the glue separator is |
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# there, reusing whatever separator is first in the $volume if possible. |
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if ( $volume !~ m@^[a-zA-Z]:\Z(?!\n)@s && |
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$volume =~ m@[^\\/]\Z(?!\n)@ && |
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$file =~ m@[^\\/]@ |
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) { |
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$volume =~ m@([\\/])@ ; |
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my $sep = $1 ? $1 : '/' ; |
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$volume .= $sep ; |
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} |
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|
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$volume .= $file ; |
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|
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return $volume ; |
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} |
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|
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|
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sub abs2rel { |
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my($self,$path,$base) = @_; |
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|
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# Clean up $path |
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if ( ! $self->file_name_is_absolute( $path ) ) { |
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$path = $self->rel2abs( $path ) ; |
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} else { |
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$path = $self->canonpath( $path ) ; |
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} |
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|
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# Figure out the effective $base and clean it up. |
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if ( !defined( $base ) || $base eq '' ) { |
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$base = $self->_cwd(); |
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} elsif ( ! $self->file_name_is_absolute( $base ) ) { |
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$base = $self->rel2abs( $base ) ; |
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} else { |
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$base = $self->canonpath( $base ) ; |
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} |
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|
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# Split up paths |
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my ( $path_volume, $path_directories, $path_file ) = $self->splitpath( $path, 1 ) ; |
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my ( $base_volume, $base_directories ) = $self->splitpath( $base, 1 ) ; |
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return $path unless $path_volume eq $base_volume; |
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|
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# Now, remove all leading components that are the same |
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my @pathchunks = $self->splitdir( $path_directories ); |
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my @basechunks = $self->splitdir( $base_directories ); |
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|
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while ( @pathchunks && |
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@basechunks && |
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lc( $pathchunks[0] ) eq lc( $basechunks[0] ) |
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) { |
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shift @pathchunks ; |
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shift @basechunks ; |
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} |
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|
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# No need to catdir, we know these are well formed. |
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$path_directories = CORE::join( '/', @pathchunks ); |
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$base_directories = CORE::join( '/', @basechunks ); |
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|
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# $base_directories now contains the directories the resulting relative |
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# path must ascend out of before it can descend to $path_directory. So, |
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# replace all names with $parentDir |
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|
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#FA Need to replace between backslashes... |
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$base_directories =~ s|[^\\/]+|..|g ; |
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|
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# Glue the two together, using a separator if necessary, and preventing an |
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# empty result. |
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|
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#FA Must check that new directories are not empty. |
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if ( $path_directories ne '' && $base_directories ne '' ) { |
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$path_directories = "$base_directories/$path_directories" ; |
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} else { |
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$path_directories = "$base_directories$path_directories" ; |
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} |
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|
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return $self->canonpath( |
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$self->catpath( "", $path_directories, $path_file ) |
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) ; |
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} |
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|
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|
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sub rel2abs { |
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my ($self,$path,$base ) = @_; |
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|
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if ( ! $self->file_name_is_absolute( $path ) ) { |
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|
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if ( !defined( $base ) || $base eq '' ) { |
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$base = $self->_cwd(); |
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} |
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elsif ( ! $self->file_name_is_absolute( $base ) ) { |
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$base = $self->rel2abs( $base ) ; |
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} |
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else { |
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$base = $self->canonpath( $base ) ; |
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} |
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|
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my ( $path_directories, $path_file ) = |
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($self->splitpath( $path, 1 ))[1,2] ; |
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|
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my ( $base_volume, $base_directories ) = |
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$self->splitpath( $base, 1 ) ; |
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|
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$path = $self->catpath( |
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$base_volume, |
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$self->catdir( $base_directories, $path_directories ), |
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$path_file |
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) ; |
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} |
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|
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return $self->canonpath( $path ) ; |
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} |
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|
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1; |
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__END__ |
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|
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=head1 NAME |
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|
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File::Spec::OS2 - methods for OS/2 file specs |
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|
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=head1 SYNOPSIS |
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|
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require File::Spec::OS2; # Done internally by File::Spec if needed |
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|
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=head1 DESCRIPTION |
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|
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See L<File::Spec> and L<File::Spec::Unix>. This package overrides the |
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implementation of these methods, not the semantics. |
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|
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Amongst the changes made for OS/2 are... |
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|
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=over 4 |
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|
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=item tmpdir |
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|
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Modifies the list of places temp directory information is looked for. |
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|
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$ENV{TMPDIR} |
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$ENV{TEMP} |
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$ENV{TMP} |
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/tmp |
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/ |
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|
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=item splitpath |
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|
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Volumes can be drive letters or UNC sharenames (\\server\share). |
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|
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=back |
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|
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=head1 COPYRIGHT |
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|
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Copyright (c) 2004 by the Perl 5 Porters. All rights reserved. |
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|
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This program is free software; you can redistribute it and/or modify |
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it under the same terms as Perl itself. |
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|
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=cut |
