-
package File::Spec::VMS;
-use Carp qw( &carp );
-use Config;
-require Exporter;
-use VMS::Filespec;
-use File::Basename;
+use strict;
+use vars qw(@ISA $VERSION);
+require File::Spec::Unix;
-use File::Spec;
-use vars qw($Revision);
-$Revision = '5.3901 (6-Mar-1997)';
+$VERSION = '1.4';
@ISA = qw(File::Spec::Unix);
-Exporter::import('File::Spec', '$Verbose');
+use File::Basename;
+use VMS::Filespec;
=head1 NAME
=head1 SYNOPSIS
- use File::Spec::VMS; # Done internally by File::Spec if needed
+ require File::Spec::VMS; # Done internally by File::Spec if needed
=head1 DESCRIPTION
there. This package overrides the implementation of these methods, not
the semantics.
-=head2 Methods always loaded
+=over 4
+
+=item canonpath (override)
+
+Removes redundant portions of file specifications according to VMS syntax.
-=over
+=cut
+
+sub canonpath {
+ my($self,$path) = @_;
+
+ if ($path =~ m|/|) { # Fake Unix
+ my $pathify = $path =~ m|/\Z(?!\n)|;
+ $path = $self->SUPER::canonpath($path);
+ if ($pathify) { return vmspath($path); }
+ else { return vmsify($path); }
+ }
+ else {
+ $path =~ tr/<>/[]/; # < and > ==> [ and ]
+ $path =~ s/\]\[\./\.\]\[/g; # ][. ==> .][
+ $path =~ s/\[000000\.\]\[/\[/g; # [000000.][ ==> [
+ $path =~ s/\[000000\./\[/g; # [000000. ==> [
+ $path =~ s/\.\]\[000000\]/\]/g; # .][000000] ==> ]
+ $path =~ s/\.\]\[/\./g; # foo.][bar ==> foo.bar
+ 1 while ($path =~ s/([\[\.])(-+)\.(-+)([\.\]])/$1$2$3$4/);
+ # That loop does the following
+ # with any amount of dashes:
+ # .-.-. ==> .--.
+ # [-.-. ==> [--.
+ # .-.-] ==> .--]
+ # [-.-] ==> [--]
+ 1 while ($path =~ s/([\[\.])[^\]\.]+\.-(-+)([\]\.])/$1$2$3/);
+ # That loop does the following
+ # with any amount (minimum 2)
+ # of dashes:
+ # .foo.--. ==> .-.
+ # .foo.--] ==> .-]
+ # [foo.--. ==> [-.
+ # [foo.--] ==> [-]
+ #
+ # And then, the remaining cases
+ $path =~ s/\[\.-/[-/; # [.- ==> [-
+ $path =~ s/\.[^\]\.]+\.-\./\./g; # .foo.-. ==> .
+ $path =~ s/\[[^\]\.]+\.-\./\[/g; # [foo.-. ==> [
+ $path =~ s/\.[^\]\.]+\.-\]/\]/g; # .foo.-] ==> ]
+ $path =~ s/\[[^\]\.]+\.-\]/\[000000\]/g;# [foo.-] ==> [000000]
+ $path =~ s/\[\]// unless $path eq '[]'; # [] ==>
+ return $path;
+ }
+}
-=item catdir
+=item catdir (override)
Concatenates a list of file specifications, and returns the result as a
-VMS-syntax directory specification.
+VMS-syntax directory specification. No check is made for "impossible"
+cases (e.g. elements other than the first being absolute filespecs).
=cut
sub catdir {
- my($self,@dirs) = @_;
- my($dir) = pop @dirs;
- @dirs = grep($_,@dirs);
- my($rslt);
+ my $self = shift;
+ my $dir = pop;
+ my @dirs = grep {defined() && length()} @_;
+
+ my $rslt;
if (@dirs) {
- my($path) = (@dirs == 1 ? $dirs[0] : $self->catdir(@dirs));
- my($spath,$sdir) = ($path,$dir);
- $spath =~ s/.dir$//; $sdir =~ s/.dir$//;
- $sdir = $self->eliminate_macros($sdir) unless $sdir =~ /^[\w\-]+$/;
- $rslt = $self->fixpath($self->eliminate_macros($spath)."/$sdir",1);
+ my $path = (@dirs == 1 ? $dirs[0] : $self->catdir(@dirs));
+ my ($spath,$sdir) = ($path,$dir);
+ $spath =~ s/\.dir\Z(?!\n)//; $sdir =~ s/\.dir\Z(?!\n)//;
+ $sdir = $self->eliminate_macros($sdir) unless $sdir =~ /^[\w\-]+\Z(?!\n)/s;
+ $rslt = $self->fixpath($self->eliminate_macros($spath)."/$sdir",1);
+
+ # Special case for VMS absolute directory specs: these will have had device
+ # prepended during trip through Unix syntax in eliminate_macros(), since
+ # Unix syntax has no way to express "absolute from the top of this device's
+ # directory tree".
+ if ($spath =~ /^[\[<][^.\-]/s) { $rslt =~ s/^[^\[<]+//s; }
}
- else {
- if ($dir =~ /^\$\([^\)]+\)$/) { $rslt = $dir; }
- else { $rslt = vmspath($dir); }
+ else {
+ if (not defined $dir or not length $dir) { $rslt = ''; }
+ elsif ($dir =~ /^\$\([^\)]+\)\Z(?!\n)/s) { $rslt = $dir; }
+ else { $rslt = vmspath($dir); }
}
- print "catdir(",join(',',@_[1..$#_]),") = |$rslt|\n" if $Verbose >= 3;
- $rslt;
+ return $self->canonpath($rslt);
}
-=item catfile
+=item catfile (override)
Concatenates a list of file specifications, and returns the result as a
-VMS-syntax directory specification.
+VMS-syntax file specification.
=cut
sub catfile {
- my($self,@files) = @_;
- my($file) = pop @files;
- @files = grep($_,@files);
- my($rslt);
+ my $self = shift;
+ my $file = $self->canonpath(pop());
+ my @files = grep {defined() && length()} @_;
+
+ my $rslt;
if (@files) {
- my($path) = (@files == 1 ? $files[0] : $self->catdir(@files));
- my($spath) = $path;
- $spath =~ s/.dir$//;
- if ( $spath =~ /^[^\)\]\/:>]+\)$/ && basename($file) eq $file) { $rslt = "$spath$file"; }
- else {
- $rslt = $self->eliminate_macros($spath);
- $rslt = vmsify($rslt.($rslt ? '/' : '').unixify($file));
- }
+ my $path = (@files == 1 ? $files[0] : $self->catdir(@files));
+ my $spath = $path;
+ $spath =~ s/\.dir\Z(?!\n)//;
+ if ($spath =~ /^[^\)\]\/:>]+\)\Z(?!\n)/s && basename($file) eq $file) {
+ $rslt = "$spath$file";
+ }
+ else {
+ $rslt = $self->eliminate_macros($spath);
+ $rslt = vmsify($rslt.((defined $rslt) && ($rslt ne '') ? '/' : '').unixify($file));
+ }
}
- else { $rslt = vmsify($file); }
- print "catfile(",join(',',@_[1..$#_]),") = |$rslt|\n" if $Verbose >= 3;
- $rslt;
+ else { $rslt = (defined($file) && length($file)) ? vmsify($file) : ''; }
+ return $self->canonpath($rslt);
}
+
=item curdir (override)
-Returns a string representing of the current directory.
+Returns a string representation of the current directory: '[]'
=cut
=item devnull (override)
-Returns a string representing the null device.
+Returns a string representation of the null device: '_NLA0:'
=cut
sub devnull {
- return 'NL:';
+ return "_NLA0:";
}
=item rootdir (override)
-Returns a string representing of the root directory.
+Returns a string representation of the root directory: 'SYS$DISK:[000000]'
=cut
sub rootdir {
- return '';
+ return 'SYS$DISK:[000000]';
+}
+
+=item tmpdir (override)
+
+Returns a string representation of the first writable directory
+from the following list or '' if none are writable:
+
+ sys$scratch:
+ $ENV{TMPDIR}
+
+Since perl 5.8.0, if running under taint mode, and if $ENV{TMPDIR}
+is tainted, it is not used.
+
+=cut
+
+my $tmpdir;
+sub tmpdir {
+ return $tmpdir if defined $tmpdir;
+ $tmpdir = $_[0]->_tmpdir( 'sys$scratch:', $ENV{TMPDIR} );
}
=item updir (override)
-Returns a string representing of the parent directory.
+Returns a string representation of the parent directory: '[-]'
=cut
return '[-]';
}
+=item case_tolerant (override)
+
+VMS file specification syntax is case-tolerant.
+
+=cut
+
+sub case_tolerant {
+ return 1;
+}
+
=item path (override)
Translate logical name DCL$PATH as a searchlist, rather than trying
=cut
sub path {
- my(@dirs,$dir,$i);
+ my (@dirs,$dir,$i);
while ($dir = $ENV{'DCL$PATH;' . $i++}) { push(@dirs,$dir); }
- @dirs;
+ return @dirs;
}
=item file_name_is_absolute (override)
=cut
sub file_name_is_absolute {
- my($self,$file) = @_;
+ my ($self,$file) = @_;
# If it's a logical name, expand it.
- $file = $ENV{$file} while $file =~ /^[\w\$\-]+$/ and $ENV{$file};
- $file =~ m!^/! or $file =~ m![<\[][^.\-\]>]! or $file =~ /:[^<\[]/;
+ $file = $ENV{$file} while $file =~ /^[\w\$\-]+\Z(?!\n)/s && $ENV{$file};
+ return scalar($file =~ m!^/!s ||
+ $file =~ m![<\[][^.\-\]>]! ||
+ $file =~ /:[^<\[]/);
+}
+
+=item splitpath (override)
+
+Splits using VMS syntax.
+
+=cut
+
+sub splitpath {
+ my($self,$path) = @_;
+ my($dev,$dir,$file) = ('','','');
+
+ vmsify($path) =~ /(.+:)?([\[<].*[\]>])?(.*)/s;
+ return ($1 || '',$2 || '',$3);
+}
+
+=item splitdir (override)
+
+Split dirspec using VMS syntax.
+
+=cut
+
+sub splitdir {
+ my($self,$dirspec) = @_;
+ $dirspec =~ tr/<>/[]/; # < and > ==> [ and ]
+ $dirspec =~ s/\]\[\./\.\]\[/g; # ][. ==> .][
+ $dirspec =~ s/\[000000\.\]\[/\[/g; # [000000.][ ==> [
+ $dirspec =~ s/\[000000\./\[/g; # [000000. ==> [
+ $dirspec =~ s/\.\]\[000000\]/\]/g; # .][000000] ==> ]
+ $dirspec =~ s/\.\]\[/\./g; # foo.][bar ==> foo.bar
+ while ($dirspec =~ s/(^|[\[\<\.])\-(\-+)($|[\]\>\.])/$1-.$2$3/g) {}
+ # That loop does the following
+ # with any amount of dashes:
+ # .--. ==> .-.-.
+ # [--. ==> [-.-.
+ # .--] ==> .-.-]
+ # [--] ==> [-.-]
+ $dirspec = "[$dirspec]" unless $dirspec =~ /[\[<]/; # make legal
+ my(@dirs) = split('\.', vmspath($dirspec));
+ $dirs[0] =~ s/^[\[<]//s; $dirs[-1] =~ s/[\]>]\Z(?!\n)//s;
+ @dirs;
}
-1;
-__END__
+=item catpath (override)
+
+Construct a complete filespec using VMS syntax
+
+=cut
+
+sub catpath {
+ my($self,$dev,$dir,$file) = @_;
+
+ # We look for a volume in $dev, then in $dir, but not both
+ my ($dir_volume, $dir_dir, $dir_file) = $self->splitpath($dir);
+ $dev = $dir_volume unless length $dev;
+ $dir = length $dir_file ? $self->catfile($dir_dir, $dir_file) : $dir_dir;
+
+ if ($dev =~ m|^/+([^/]+)|) { $dev = "$1:"; }
+ else { $dev .= ':' unless $dev eq '' or $dev =~ /:\Z(?!\n)/; }
+ if (length($dev) or length($dir)) {
+ $dir = "[$dir]" unless $dir =~ /[\[<\/]/;
+ $dir = vmspath($dir);
+ }
+ "$dev$dir$file";
+}
+
+=item abs2rel (override)
+
+Use VMS syntax when converting filespecs.
+
+=cut
+
+sub abs2rel {
+ my $self = shift;
+ return vmspath(File::Spec::Unix::abs2rel( $self, @_ ))
+ if grep m{/}, @_;
+
+ my($path,$base) = @_;
+ $base = $self->_cwd() unless defined $base and length $base;
+
+ for ($path, $base) { $_ = $self->canonpath($_) }
+
+ # Are we even starting $path on the same (node::)device as $base? Note that
+ # logical paths or nodename differences may be on the "same device"
+ # but the comparison that ignores device differences so as to concatenate
+ # [---] up directory specs is not even a good idea in cases where there is
+ # a logical path difference between $path and $base nodename and/or device.
+ # Hence we fall back to returning the absolute $path spec
+ # if there is a case blind device (or node) difference of any sort
+ # and we do not even try to call $parse() or consult %ENV for $trnlnm()
+ # (this module needs to run on non VMS platforms after all).
+
+ my ($path_volume, $path_directories, $path_file) = $self->splitpath($path);
+ my ($base_volume, $base_directories, $base_file) = $self->splitpath($base);
+ return $path unless lc($path_volume) eq lc($base_volume);
+
+ for ($path, $base) { $_ = $self->rel2abs($_) }
+
+ # Now, remove all leading components that are the same
+ my @pathchunks = $self->splitdir( $path_directories );
+ my $pathchunks = @pathchunks;
+ unshift(@pathchunks,'000000') unless $pathchunks[0] eq '000000';
+ my @basechunks = $self->splitdir( $base_directories );
+ my $basechunks = @basechunks;
+ unshift(@basechunks,'000000') unless $basechunks[0] eq '000000';
+
+ while ( @pathchunks &&
+ @basechunks &&
+ lc( $pathchunks[0] ) eq lc( $basechunks[0] )
+ ) {
+ shift @pathchunks ;
+ shift @basechunks ;
+ }
+
+ # @basechunks now contains the directories to climb out of,
+ # @pathchunks now has the directories to descend in to.
+ if ((@basechunks > 0) || ($basechunks != $pathchunks)) {
+ $path_directories = join '.', ('-' x @basechunks, @pathchunks) ;
+ }
+ else {
+ $path_directories = join '.', @pathchunks;
+ }
+ $path_directories = '['.$path_directories.']';
+ return $self->canonpath( $self->catpath( '', $path_directories, $path_file ) ) ;
+}
+
+
+=item rel2abs (override)
+
+Use VMS syntax when converting filespecs.
+
+=cut
+
+sub rel2abs {
+ my $self = shift ;
+ my ($path,$base ) = @_;
+ return undef unless defined $path;
+ if ($path =~ m/\//) {
+ $path = ( -d $path || $path =~ m/\/\z/ # educated guessing about
+ ? vmspath($path) # whether it's a directory
+ : vmsify($path) );
+ }
+ $base = vmspath($base) if defined $base && $base =~ m/\//;
+ # Clean up and split up $path
+ if ( ! $self->file_name_is_absolute( $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_directories, $path_file ) =
+ ($self->splitpath( $path ))[1,2] ;
+
+ my ( $base_volume, $base_directories ) =
+ $self->splitpath( $base ) ;
+
+ $path_directories = '' if $path_directories eq '[]' ||
+ $path_directories eq '<>';
+ my $sep = '' ;
+ $sep = '.'
+ if ( $base_directories =~ m{[^.\]>]\Z(?!\n)} &&
+ $path_directories =~ m{^[^.\[<]}s
+ ) ;
+ $base_directories = "$base_directories$sep$path_directories";
+ $base_directories =~ s{\.?[\]>][\[<]\.?}{.};
+
+ $path = $self->catpath( $base_volume, $base_directories, $path_file );
+ }
+
+ return $self->canonpath( $path ) ;
+}
+
+
+# eliminate_macros() and fixpath() are MakeMaker-specific methods
+# which are used inside catfile() and catdir(). MakeMaker has its own
+# copies as of 6.06_03 which are the canonical ones. We leave these
+# here, in peace, so that File::Spec continues to work with MakeMakers
+# prior to 6.06_03.
+#
+# Please consider these two methods deprecated. Do not patch them,
+# patch the ones in ExtUtils::MM_VMS instead.
+sub eliminate_macros {
+ my($self,$path) = @_;
+ return '' unless (defined $path) && ($path ne '');
+ $self = {} unless ref $self;
+
+ if ($path =~ /\s/) {
+ return join ' ', map { $self->eliminate_macros($_) } split /\s+/, $path;
+ }
+
+ my($npath) = unixify($path);
+ my($complex) = 0;
+ my($head,$macro,$tail);
+
+ # perform m##g in scalar context so it acts as an iterator
+ while ($npath =~ m#(.*?)\$\((\S+?)\)(.*)#gs) {
+ if ($self->{$2}) {
+ ($head,$macro,$tail) = ($1,$2,$3);
+ if (ref $self->{$macro}) {
+ if (ref $self->{$macro} eq 'ARRAY') {
+ $macro = join ' ', @{$self->{$macro}};
+ }
+ else {
+ print "Note: can't expand macro \$($macro) containing ",ref($self->{$macro}),
+ "\n\t(using MMK-specific deferred substitutuon; MMS will break)\n";
+ $macro = "\cB$macro\cB";
+ $complex = 1;
+ }
+ }
+ else { ($macro = unixify($self->{$macro})) =~ s#/\Z(?!\n)##; }
+ $npath = "$head$macro$tail";
+ }
+ }
+ if ($complex) { $npath =~ s#\cB(.*?)\cB#\${$1}#gs; }
+ $npath;
+}
+
+# Deprecated. See the note above for eliminate_macros().
+sub fixpath {
+ my($self,$path,$force_path) = @_;
+ return '' unless $path;
+ $self = bless {} unless ref $self;
+ my($fixedpath,$prefix,$name);
+
+ if ($path =~ /\s/) {
+ return join ' ',
+ map { $self->fixpath($_,$force_path) }
+ split /\s+/, $path;
+ }
+
+ if ($path =~ m#^\$\([^\)]+\)\Z(?!\n)#s || $path =~ m#[/:>\]]#) {
+ if ($force_path or $path =~ /(?:DIR\)|\])\Z(?!\n)/) {
+ $fixedpath = vmspath($self->eliminate_macros($path));
+ }
+ else {
+ $fixedpath = vmsify($self->eliminate_macros($path));
+ }
+ }
+ elsif ((($prefix,$name) = ($path =~ m#^\$\(([^\)]+)\)(.+)#s)) && $self->{$prefix}) {
+ my($vmspre) = $self->eliminate_macros("\$($prefix)");
+ # is it a dir or just a name?
+ $vmspre = ($vmspre =~ m|/| or $prefix =~ /DIR\Z(?!\n)/) ? vmspath($vmspre) : '';
+ $fixedpath = ($vmspre ? $vmspre : $self->{$prefix}) . $name;
+ $fixedpath = vmspath($fixedpath) if $force_path;
+ }
+ else {
+ $fixedpath = $path;
+ $fixedpath = vmspath($fixedpath) if $force_path;
+ }
+ # No hints, so we try to guess
+ if (!defined($force_path) and $fixedpath !~ /[:>(.\]]/) {
+ $fixedpath = vmspath($fixedpath) if -d $fixedpath;
+ }
+
+ # Trim off root dirname if it's had other dirs inserted in front of it.
+ $fixedpath =~ s/\.000000([\]>])/$1/;
+ # Special case for VMS absolute directory specs: these will have had device
+ # prepended during trip through Unix syntax in eliminate_macros(), since
+ # Unix syntax has no way to express "absolute from the top of this device's
+ # directory tree".
+ if ($path =~ /^[\[>][^.\-]/) { $fixedpath =~ s/^[^\[<]+//; }
+ $fixedpath;
+}
+
+
+=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.
+
+=head1 SEE ALSO
+
+See L<File::Spec> and L<File::Spec::Unix>. This package overrides the
+implementation of these methods, not the semantics.
+
+An explanation of VMS file specs can be found at
+L<"http://h71000.www7.hp.com/doc/731FINAL/4506/4506pro_014.html#apps_locating_naming_files">.
+
+=cut
+
+1;
projects / p5sagit/p5-mst-13.2.git / blobdiff