package Portable::FileSpec;
### UGLY HACK: these functions where completely copied from File::Spec::Win32
use 5.008;
use strict;
use warnings;
our $VERSION = '1.22';
# Some regexes we use for path splitting
my $DRIVE_RX = '[a-zA-Z]:';
my $UNC_RX = '(?:\\\\\\\\|//)[^\\\\/]+[\\\\/][^\\\\/]+';
my $VOL_RX = "(?:$DRIVE_RX|$UNC_RX)";
sub splitpath {
my ($path, $nofile) = @_;
my ($volume,$directory,$file) = ('','','');
if ( $nofile ) {
$path =~
m{^ ( $VOL_RX ? ) (.*) }sox;
$volume = $1;
$directory = $2;
}
else {
$path =~
m{^ ( $VOL_RX ? )
( (?:.*[\\/](?:\.\.?\Z(?!\n))?)? )
(.*)
}sox;
$volume = $1;
$directory = $2;
$file = $3;
}
return ($volume,$directory,$file);
}
sub splitdir {
my ($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(?!\n)| ) {
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[ $#directories ]= '' ;
return @directories ;
}
}
sub catpath {
my ($volume,$directory,$file) = @_;
# If it's UNC, make sure the glue separator is there, reusing
# whatever separator is first in the $volume
my $v;
$volume .= $v
if ( (($v) = $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 catdir {
# Legacy / compatibility support
return "" unless @_;
shift, return _canon_cat( "/", @_ ) if $_[0] eq "";
# Compatibility with File::Spec <= 3.26:
# catdir('A:', 'foo') should return 'A:\foo'.
return _canon_cat( ($_[0].'\\'), @_[1..$#_] ) if $_[0] =~ m{^$DRIVE_RX\z}o;
return _canon_cat( @_ );
}
sub catfile {
# Legacy / compatibility support
#
shift, return _canon_cat( "/", @_ )
if $_[0] eq "";
# Compatibility with File::Spec <= 3.26:
# catfile('A:', 'foo') should return 'A:\foo'.
return _canon_cat( ($_[0].'\\'), @_[1..$#_] )
if $_[0] =~ m{^$DRIVE_RX\z}o;
return _canon_cat( @_ );
}
sub _canon_cat {
my ($first, @rest) = @_;
my $volume = $first =~ s{ \A ([A-Za-z]:) ([\\/]?) }{}x # drive letter
? ucfirst( $1 ).( $2 ? "\\" : "" )
: $first =~ s{ \A (?:\\\\|//) ([^\\/]+)
(?: [\\/] ([^\\/]+) )?
[\\/]? }{}xs # UNC volume
? "\\\\$1".( defined $2 ? "\\$2" : "" )."\\"
: $first =~ s{ \A [\\/] }{}x # root dir
? "\\"
: "";
my $path = join "\\", $first, @rest;
$path =~ tr#\\/#\\\\#s; # xx/yy --> xx\yy & xx\\yy --> xx\yy
# xx/././yy --> xx/yy
$path =~ s{(?:
(?:\A|\\) # at begin or after a slash
\.
(?:\\\.)* # and more
(?:\\|\z) # at end or followed by slash
)+ # performance boost -- I do not know why
}{\\}gx;
# XXX I do not know whether more dots are supported by the OS supporting
# this ... annotation (NetWare or symbian but not MSWin32).
# Then .... could easily become ../../.. etc:
# Replace \.\.\. by (\.\.\.+) and substitute with
# { $1 . ".." . "\\.." x (length($2)-2) }gex
# ... --> ../..
$path =~ s{ (\A|\\) # at begin or after a slash
\.\.\.
(?=\\|\z) # at end or followed by slash
}{$1..\\..}gx;
# xx\yy\..\zz --> xx\zz
while ( $path =~ s{(?:
(?:\A|\\) # at begin or after a slash
[^\\]+ # rip this 'yy' off
\\\.\.
(?<!\A\.\.\\\.\.) # do *not* replace ^..\..
(?<!\\\.\.\\\.\.) # do *not* replace \..\..
(?:\\|\z) # at end or followed by slash
)+ # performance boost -- I do not know why
}{\\}sx ) {}
$path =~ s#\A\\##; # \xx --> xx NOTE: this is *not* root
$path =~ s#\\\z##; # xx\ --> xx
if ( $volume =~ m#\\\z# )
{ # <vol>\.. --> <vol>\
$path =~ s{ \A # at begin
\.\.
(?:\\\.\.)* # and more
(?:\\|\z) # at end or followed by slash
}{}x;
return $1 # \\HOST\SHARE\ --> \\HOST\SHARE
if $path eq ""
and $volume =~ m#\A(\\\\.*)\\\z#s;
}
return $path ne "" || $volume ? $volume.$path : ".";
}
1;