diff options
Diffstat (limited to 'contrib/perl5/lib/File/Spec/Mac.pm')
| -rw-r--r-- | contrib/perl5/lib/File/Spec/Mac.pm | 285 |
1 files changed, 226 insertions, 59 deletions
diff --git a/contrib/perl5/lib/File/Spec/Mac.pm b/contrib/perl5/lib/File/Spec/Mac.pm index 63a9e1283e0e..959e33d0cf3b 100644 --- a/contrib/perl5/lib/File/Spec/Mac.pm +++ b/contrib/perl5/lib/File/Spec/Mac.pm @@ -1,18 +1,9 @@ package File::Spec::Mac; -use Exporter (); -use Config; use strict; -use File::Spec; -use vars qw(@ISA $VERSION $Is_Mac); - -$VERSION = '1.0'; - +use vars qw(@ISA); +require File::Spec::Unix; @ISA = qw(File::Spec::Unix); -$Is_Mac = $^O eq 'MacOS'; - -Exporter::import('File::Spec', '$Verbose'); - =head1 NAME @@ -20,7 +11,7 @@ File::Spec::Mac - File::Spec for MacOS =head1 SYNOPSIS -C<require File::Spec::Mac;> + require File::Spec::Mac; # Done internally by File::Spec if needed =head1 DESCRIPTION @@ -37,8 +28,8 @@ On MacOS, there's nothing to be done. Returns what it's given. =cut sub canonpath { - my($self,$path) = @_; - $path; + my ($self,$path) = @_; + return $path; } =item catdir @@ -84,20 +75,17 @@ aren't done here. This routine will treat this as absolute. =cut -# '; - sub catdir { shift; my @args = @_; - $args[0] =~ s/:$//; - my $result = shift @args; - for (@args) { - s/:$//; - s/^://; - $result .= ":$_"; + my $result = shift @args; + $result =~ s/:\z//; + foreach (@args) { + s/:\z//; + s/^://s; + $result .= ":$_"; } - $result .= ":"; - $result; + return "$result:"; } =item catfile @@ -118,50 +106,69 @@ give the same answer, as one might expect. =cut sub catfile { - my $self = shift @_; + my $self = shift; my $file = pop @_; return $file unless @_; my $dir = $self->catdir(@_); - $file =~ s/^://; + $file =~ s/^://s; return $dir.$file; } =item curdir -Returns a string representing of the current directory. +Returns a string representing the current directory. =cut sub curdir { - return ":" ; + return ":"; +} + +=item devnull + +Returns a string representing the null device. + +=cut + +sub devnull { + return "Dev:Null"; } =item rootdir Returns a string representing the root directory. Under MacPerl, returns the name of the startup volume, since that's the closest in -concept, although other volumes aren't rooted there. On any other -platform returns '', since there's no common way to indicate "root -directory" across all Macs. +concept, although other volumes aren't rooted there. =cut sub rootdir { # -# There's no real root directory on MacOS. If you're using MacPerl, -# the name of the startup volume is returned, since that's the closest in -# concept. On other platforms, simply return '', because nothing better -# can be done. +# There's no real root directory on MacOS. The name of the startup +# volume is returned, since that's the closest in concept. # - if($Is_Mac) { - require Mac::Files; - my $system = Mac::Files::FindFolder(&Mac::Files::kOnSystemDisk, - &Mac::Files::kSystemFolderType); - $system =~ s/:.*$/:/; - return $system; - } else { - return ''; - } + require Mac::Files; + my $system = Mac::Files::FindFolder(&Mac::Files::kOnSystemDisk, + &Mac::Files::kSystemFolderType); + $system =~ s/:.*\z/:/s; + return $system; +} + +=item tmpdir + +Returns a string representation of the first existing directory +from the following list or '' if none exist: + + $ENV{TMPDIR} + +=cut + +my $tmpdir; +sub tmpdir { + return $tmpdir if defined $tmpdir; + $tmpdir = $ENV{TMPDIR} if -d $ENV{TMPDIR}; + $tmpdir = '' unless defined $tmpdir; + return $tmpdir; } =item updir @@ -185,11 +192,11 @@ distinguish unambiguously. =cut sub file_name_is_absolute { - my($self,$file) = @_; - if ($file =~ /:/) { - return ($file !~ m/^:/); - } else { - return (! -e ":$file"); + my ($self,$file) = @_; + if ($file =~ /:/) { + return ($file !~ m/^:/s); + } else { + return (! -e ":$file"); } } @@ -207,16 +214,178 @@ sub path { # The concept is meaningless under the MacPerl application. # Under MPW, it has a meaning. # - my($self) = @_; - my @path; - if(exists $ENV{Commands}) { - @path = split /,/,$ENV{Commands}; - } else { - @path = (); - } - @path; + return unless exists $ENV{Commands}; + return split(/,/, $ENV{Commands}); +} + +=item splitpath + +=cut + +sub splitpath { + my ($self,$path, $nofile) = @_; + + my ($volume,$directory,$file) = ('','',''); + + if ( $nofile ) { + ( $volume, $directory ) = $path =~ m@((?:[^:]+(?::|\z))?)(.*)@s; + } + else { + $path =~ + m@^( (?: [^:]+: )? ) + ( (?: .*: )? ) + ( .* ) + @xs; + $volume = $1; + $directory = $2; + $file = $3; + } + + # Make sure non-empty volumes and directories end in ':' + $volume .= ':' if $volume =~ m@[^:]\z@ ; + $directory .= ':' if $directory =~ m@[^:]\z@ ; + return ($volume,$directory,$file); +} + + +=item splitdir + +=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@ ) { + 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 + +=cut + +sub catpath { + my $self = shift ; + + my $result = shift ; + $result =~ s@^([^/])@/$1@s ; + + my $segment ; + for $segment ( @_ ) { + if ( $result =~ m@[^/]\z@ && $segment =~ m@^[^/]@s ) { + $result .= "/$segment" ; + } + elsif ( $result =~ m@/\z@ && $segment =~ m@^/@s ) { + $result =~ s@/+\z@/@; + $segment =~ s@^/+@@s; + $result .= "$segment" ; + } + else { + $result .= $segment ; + } + } + + return $result ; } +=item abs2rel + +=cut + +sub abs2rel { + my($self,$path,$base) = @_; + + # Clean up $path + if ( ! $self->file_name_is_absolute( $path ) ) { + $path = $self->rel2abs( $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 ) ; + } + + # 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 = join( ':', @pathchunks ); + + # @basechunks now contains the number of directories to climb out of. + $base = ':' x @basechunks ; + + return "$base:$path" ; +} + +=item rel2abs + +Converts a relative path to an absolute path. + + $abs_path = File::Spec->rel2abs( $destination ) ; + $abs_path = File::Spec->rel2abs( $destination, $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 $destination volume. + +On systems that have a grammar that indicates filenames, this ignores the +$base filename as well. Otherwise all path components are assumed to be +directories. + +If $path is absolute, it is cleaned up and returned using L</canonpath()>. + +Based on code written by Shigio Yamaguchi. + +No checks against the filesystem are made. + +=cut + +sub rel2abs($;$;) { + my ($self,$path,$base ) = @_; + + if ( ! $self->file_name_is_absolute( $path ) ) { + if ( !defined( $base ) || $base eq '' ) { + $base = cwd() ; + } + elsif ( ! $self->file_name_is_absolute( $base ) ) { + $base = $self->rel2abs( $base ) ; + } + else { + $base = $self->canonpath( $base ) ; + } + + $path = $self->canonpath("$base$path") ; + } + + return $path ; +} + + =back =head1 SEE ALSO @@ -226,5 +395,3 @@ L<File::Spec> =cut 1; -__END__ - |