package File::Spec::VMS;
use strict;
-use vars qw(@ISA);
+use vars qw(@ISA $VERSION);
require File::Spec::Unix;
+
+$VERSION = '1.4';
+
@ISA = qw(File::Spec::Unix);
use File::Basename;
there. This package overrides the implementation of these methods, not
the semantics.
-=over
+=over 4
=item eliminate_macros
my($self,$path) = @_;
return '' unless $path;
$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#(.*?)\$\((\S+?)\)(.*)#g) {
+ while ($npath =~ m#(.*?)\$\((\S+?)\)(.*)#gs) {
if ($self->{$2}) {
($head,$macro,$tail) = ($1,$2,$3);
if (ref $self->{$macro}) {
$complex = 1;
}
}
- else { ($macro = unixify($self->{$macro})) =~ s#/$##; }
+ else { ($macro = unixify($self->{$macro})) =~ s#/\Z(?!\n)##; }
$npath = "$head$macro$tail";
}
}
- if ($complex) { $npath =~ s#\cB(.*?)\cB#\${$1}#g; }
+ if ($complex) { $npath =~ s#\cB(.*?)\cB#\${$1}#gs; }
$npath;
}
$self = bless {} unless ref $self;
my($fixedpath,$prefix,$name);
- if ($path =~ m#^\$\([^\)]+\)$# || $path =~ m#[/:>\]]#) {
- if ($force_path or $path =~ /(?:DIR\)|\])$/) {
+ if ($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#^\$\(([^\)]+)\)(.+)#)) && $self->{$prefix}) {
+ 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 $prefix =~ /DIR$/) ? vmspath($vmspre) : '';
+ $vmspre = ($vmspre =~ m|/| or $prefix =~ /DIR\Z(?!\n)/) ? vmspath($vmspre) : '';
$fixedpath = ($vmspre ? $vmspre : $self->{$prefix}) . $name;
$fixedpath = vmspath($fixedpath) if $force_path;
}
if (!defined($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/^[^\[<]+//; }
$fixedpath;
}
=head2 Methods always loaded
-=over
+=over 4
+
+=item canonpath (override)
+
+Removes redundant portions of file specifications according to VMS syntax.
+
+=cut
+
+sub canonpath {
+ my($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 =~ s/([\[<])000000\./$1/g; # [000000.foo ==> [foo
+ $path =~ s/([^-]+)\.(\]\[|><)?000000([\]\>])/$1$3/g; # foo.000000] ==> foo]
+ $path =~ s-\]\[--g; $path =~ s/><//g; # foo.][bar ==> foo.bar
+ 1 while $path =~ s{([\[<-])\.-}{$1-}; # [.-.- ==> [--
+ $path =~ s/\.[^\[<\.]+\.-([\]\>])/$1/; # bar.foo.-] ==> bar]
+ $path =~ s/([\[<])(-+)/$1 . "\cx" x length($2)/e; # encode leading '-'s
+ $path =~ s/([\[<\.])([^\[<\.\cx]+)\.-\.?/$1/g; # bar.-.foo ==> foo
+ $path =~ s/([\[<])(\cx+)/$1 . '-' x length($2)/e; # then decode
+ $path =~ s/^[\[<\]>]{2}//; # []foo ==> foo
+ return $path;
+ }
+}
=item catdir
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
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 $sdir =~ /^[\w\-]+$/;
+ $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); }
+ if (not defined $dir or not length $dir) { $rslt = ''; }
+ elsif ($dir =~ /^\$\([^\)]+\)\Z(?!\n)/s) { $rslt = $dir; }
+ else { $rslt = vmspath($dir); }
}
- return $rslt;
+ return $self->canonpath($rslt);
}
=item catfile
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;
+ my $file = $self->canonpath(pop @files);
@files = grep($_,@files);
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) {
+ $spath =~ s/\.dir\Z(?!\n)//;
+ if ($spath =~ /^[^\)\]\/:>]+\)\Z(?!\n)/s && basename($file) eq $file) {
$rslt = "$spath$file";
}
else {
$rslt = vmsify($rslt.($rslt ? '/' : '').unixify($file));
}
}
- else { $rslt = vmsify($file); }
- return $rslt;
+ else { $rslt = (defined($file) && length($file)) ? vmsify($file) : ''; }
+ return $self->canonpath($rslt);
}
+
=item curdir (override)
Returns a string representation of the current directory: '[]'
Returns a string representation of the first writable directory
from the following list or '' if none are writable:
- /sys$scratch
+ sys$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 $tmpdir;
- foreach ('/sys$scratch', $ENV{TMPDIR}) {
- next unless defined && -d && -w _;
- $tmpdir = $_;
- last;
- }
- $tmpdir = '' unless defined $tmpdir;
- return $tmpdir;
+ my $self = shift;
+ $tmpdir = $self->_tmpdir( 'sys$scratch:', $ENV{TMPDIR} );
}
=item updir (override)
return '[-]';
}
+=item case_tolerant (override)
+
+VMS file specification syntax is case-tolerant.
+
+=cut
+
+sub case_tolerant {
+ return 1;
+}
+
=item path (override)
Translate logical name DCL$PATH as a searchlist, rather than trying
sub file_name_is_absolute {
my ($self,$file) = @_;
# If it's a logical name, expand it.
- $file = $ENV{$file} while $file =~ /^[\w\$\-]+$/ && $ENV{$file};
- return scalar($file =~ m!^/! ||
+ $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 =~ s/\]\[//g; $dirspec =~ s/\-\-/-.-/g;
+ $dirspec = "[$dirspec]" unless $dirspec =~ /[\[<]/; # make legal
+ my(@dirs) = split('\.', vmspath($dirspec));
+ $dirs[0] =~ s/^[\[<]//s; $dirs[-1] =~ s/[\]>]\Z(?!\n)//s;
+ @dirs;
+}
+
+
+=item catpath (override)
+
+Construct a complete filespec using VMS syntax
+
+=cut
+
+sub catpath {
+ my($self,$dev,$dir,$file) = @_;
+ 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( $self, @_ ))
+ if ( join( '', @_ ) =~ m{/} ) ;
+
+ my($path,$base) = @_;
+
+ # Note: we use '/' to glue things together here, then let canonpath()
+ # clean them up at the end.
+
+ # 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->canonpath( $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 ))[1,2] ;
+
+ $path_directories = $1
+ if $path_directories =~ /^\[(.*)\]\Z(?!\n)/s ;
+
+ my $base_directories = ($self->splitpath( $base, 1 ))[1] ;
+
+ $base_directories = $1
+ if $base_directories =~ /^\[(.*)\]\Z(?!\n)/s ;
+
+ # Now, remove all leading components that are the same
+ my @pathchunks = $self->splitdir( $path_directories );
+ unshift(@pathchunks,'000000') unless $pathchunks[0] eq '000000';
+ my @basechunks = $self->splitdir( $base_directories );
+ 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.
+ $path_directories = '-.' x @basechunks . join( '.', @pathchunks ) ;
+ $path_directories =~ s{\.\Z(?!\n)}{} ;
+ return $self->canonpath( $self->catpath( '', $path_directories, $path_file ) ) ;
+}
+
+
+=item rel2abs (override)
+
+Use VMS syntax when converting filespecs.
+
+=cut
+
+sub rel2abs {
+ my $self = shift ;
+ return vmspath(File::Spec::Unix::rel2abs( $self, @_ ))
+ if ( join( '', @_ ) =~ m{/} ) ;
+
+ my ($path,$base ) = @_;
+ # 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 ) ;
+}
+
+
=back
=head1 SEE ALSO
-L<File::Spec>
+See L<File::Spec> and L<File::Spec::Unix>. This package overrides the
+implementation of these methods, not the semantics.
=cut
https://perl5.git.perl.org / perl5.git / blobdiff