Initial Commit
This commit is contained in:
Riley Schneider
439
database/perl/lib/File/Spec/Win32.pm
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439
database/perl/lib/File/Spec/Win32.pm
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package File::Spec::Win32;
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use strict;
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use Cwd ();
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require File::Spec::Unix;
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our $VERSION = '3.79';
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$VERSION =~ tr/_//d;
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our @ISA = qw(File::Spec::Unix);
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# Some regexes we use for path splitting
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my $DRIVE_RX = '[a-zA-Z]:';
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my $UNC_RX = '(?:\\\\\\\\|//)[^\\\\/]+[\\\\/][^\\\\/]+';
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my $VOL_RX = "(?:$DRIVE_RX|$UNC_RX)";
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=head1 NAME
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File::Spec::Win32 - methods for Win32 file specs
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=head1 SYNOPSIS
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require File::Spec::Win32; # Done internally by File::Spec if needed
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=head1 DESCRIPTION
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See File::Spec::Unix for a documentation of the methods provided
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there. This package overrides the implementation of these methods, not
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the semantics.
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=over 4
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=item devnull
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Returns a string representation of the null device.
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=cut
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sub devnull {
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return "nul";
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}
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sub rootdir { '\\' }
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=item tmpdir
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Returns a string representation of the first existing directory
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from the following list:
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$ENV{TMPDIR}
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$ENV{TEMP}
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$ENV{TMP}
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SYS:/temp
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C:\system\temp
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C:/temp
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/tmp
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/
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The SYS:/temp is preferred in Novell NetWare and the C:\system\temp
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for Symbian (the File::Spec::Win32 is used also for those platforms).
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If running under taint mode, and if the environment
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variables are tainted, they are not used.
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=cut
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sub tmpdir {
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my $tmpdir = $_[0]->_cached_tmpdir(qw(TMPDIR TEMP TMP));
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return $tmpdir if defined $tmpdir;
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$tmpdir = $_[0]->_tmpdir( map( $ENV{$_}, qw(TMPDIR TEMP TMP) ),
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'SYS:/temp',
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'C:\system\temp',
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'C:/temp',
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'/tmp',
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'/' );
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$_[0]->_cache_tmpdir($tmpdir, qw(TMPDIR TEMP TMP));
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}
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=item case_tolerant
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MSWin32 case-tolerance depends on GetVolumeInformation() $ouFsFlags == FS_CASE_SENSITIVE,
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indicating the case significance when comparing file specifications.
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Since XP FS_CASE_SENSITIVE is effectively disabled for the NT subsubsystem.
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See L<http://cygwin.com/ml/cygwin/2007-07/msg00891.html>
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Default: 1
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=cut
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sub case_tolerant {
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eval {
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local @INC = @INC;
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pop @INC if $INC[-1] eq '.';
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require Win32API::File;
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} or return 1;
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my $drive = shift || "C:";
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my $osFsType = "\0"x256;
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my $osVolName = "\0"x256;
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my $ouFsFlags = 0;
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Win32API::File::GetVolumeInformation($drive, $osVolName, 256, [], [], $ouFsFlags, $osFsType, 256 );
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if ($ouFsFlags & Win32API::File::FS_CASE_SENSITIVE()) { return 0; }
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else { return 1; }
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}
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=item file_name_is_absolute
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As of right now, this returns 2 if the path is absolute with a
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volume, 1 if it's absolute with no volume, 0 otherwise.
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=cut
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sub file_name_is_absolute {
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my ($self,$file) = @_;
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if ($file =~ m{^($VOL_RX)}o) {
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my $vol = $1;
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return ($vol =~ m{^$UNC_RX}o ? 2
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: $file =~ m{^$DRIVE_RX[\\/]}o ? 2
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: 0);
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}
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return $file =~ m{^[\\/]} ? 1 : 0;
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}
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=item catfile
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Concatenate one or more directory names and a filename to form a
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complete path ending with a filename
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=cut
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sub catfile {
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shift;
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# Legacy / compatibility support
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#
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shift, return _canon_cat( "/", @_ )
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if !@_ || $_[0] eq "";
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# Compatibility with File::Spec <= 3.26:
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# catfile('A:', 'foo') should return 'A:\foo'.
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return _canon_cat( ($_[0].'\\'), @_[1..$#_] )
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if $_[0] =~ m{^$DRIVE_RX\z}o;
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return _canon_cat( @_ );
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}
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sub catdir {
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shift;
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# Legacy / compatibility support
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#
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return ""
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unless @_;
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shift, return _canon_cat( "/", @_ )
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if $_[0] eq "";
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# Compatibility with File::Spec <= 3.26:
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# catdir('A:', 'foo') should return 'A:\foo'.
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return _canon_cat( ($_[0].'\\'), @_[1..$#_] )
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if $_[0] =~ m{^$DRIVE_RX\z}o;
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return _canon_cat( @_ );
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}
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sub path {
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my @path = split(';', $ENV{PATH});
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s/"//g for @path;
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@path = grep length, @path;
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unshift(@path, ".");
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return @path;
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}
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=item canonpath
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No physical check on the filesystem, but a logical cleanup of a
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path. On UNIX eliminated successive slashes and successive "/.".
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On Win32 makes
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dir1\dir2\dir3\..\..\dir4 -> \dir\dir4 and even
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dir1\dir2\dir3\...\dir4 -> \dir\dir4
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=cut
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sub canonpath {
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# Legacy / compatibility support
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#
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return $_[1] if !defined($_[1]) or $_[1] eq '';
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return _canon_cat( $_[1] );
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}
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=item splitpath
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($volume,$directories,$file) = File::Spec->splitpath( $path );
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($volume,$directories,$file) = File::Spec->splitpath( $path,
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$no_file );
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Splits a path into volume, directory, and filename portions. Assumes that
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the last file is a path unless the path ends in '\\', '\\.', '\\..'
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or $no_file is true. On Win32 this means that $no_file true makes this return
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( $volume, $path, '' ).
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Separators accepted are \ and /.
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Volumes can be drive letters or UNC sharenames (\\server\share).
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The results can be passed to L</catpath> to get back a path equivalent to
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(usually identical to) the original path.
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=cut
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sub splitpath {
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my ($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{^ ( $VOL_RX ? ) (.*) }sox;
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$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{^ ( $VOL_RX ? )
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( (?:.*[\\/](?:\.\.?\Z(?!\n))?)? )
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(.*)
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}sox;
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$volume = $1;
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$directory = $2;
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$file = $3;
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}
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return ($volume,$directory,$file);
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}
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=item splitdir
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The opposite of L<catdir()|File::Spec/catdir>.
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@dirs = File::Spec->splitdir( $directories );
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$directories must be only the directory portion of the path on systems
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that have the concept of a volume or that have path syntax that differentiates
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files from directories.
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Unlike just splitting the directories on the separator, leading empty and
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trailing directory entries can be returned, because these are significant
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on some OSs. So,
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File::Spec->splitdir( "/a/b/c" );
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Yields:
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( '', 'a', 'b', '', 'c', '' )
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=cut
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sub splitdir {
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my ($self,$directories) = @_ ;
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#
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# split() likes to forget about trailing null fields, so here we
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# check to be sure that there will not be any before handling the
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# simple case.
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#
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if ( $directories !~ m|[\\/]\Z(?!\n)| ) {
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return split( m|[\\/]|, $directories );
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}
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else {
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#
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# since there was a trailing separator, add a file name to the end,
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# then do the split, then replace it with ''.
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#
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my( @directories )= split( m|[\\/]|, "${directories}dummy" ) ;
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$directories[ $#directories ]= '' ;
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return @directories ;
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}
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}
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=item catpath
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Takes volume, directory and file portions and returns an entire path. Under
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Unix, $volume is ignored, and this is just like catfile(). On other OSs,
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the $volume become significant.
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=cut
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sub catpath {
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my ($self,$volume,$directory,$file) = @_;
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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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my $v;
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$volume .= $v
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if ( (($v) = $volume =~ m@^([\\/])[\\/][^\\/]+[\\/][^\\/]+\Z(?!\n)@s) &&
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$directory =~ m@^[^\\/]@s
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) ;
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$volume .= $directory ;
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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 .= $sep ;
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}
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$volume .= $file ;
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return $volume ;
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}
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sub _same {
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lc($_[1]) eq lc($_[2]);
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}
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sub rel2abs {
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my ($self,$path,$base ) = @_;
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my $is_abs = $self->file_name_is_absolute($path);
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# Check for volume (should probably document the '2' thing...)
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return $self->canonpath( $path ) if $is_abs == 2;
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if ($is_abs) {
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# It's missing a volume, add one
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my $vol = ($self->splitpath( Cwd::getcwd() ))[0];
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return $self->canonpath( $vol . $path );
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}
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if ( !defined( $base ) || $base eq '' ) {
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$base = Cwd::getdcwd( ($self->splitpath( $path ))[0] ) if defined &Cwd::getdcwd ;
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$base = Cwd::getcwd() unless defined $base ;
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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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my ( $path_directories, $path_file ) =
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($self->splitpath( $path, 1 ))[1,2] ;
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my ( $base_volume, $base_directories ) =
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$self->splitpath( $base, 1 ) ;
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$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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return $self->canonpath( $path ) ;
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}
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=back
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=head2 Note For File::Spec::Win32 Maintainers
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Novell NetWare inherits its File::Spec behaviour from File::Spec::Win32.
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=head1 COPYRIGHT
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Copyright (c) 2004,2007 by the Perl 5 Porters. All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the same terms as Perl itself.
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=head1 SEE ALSO
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See L<File::Spec> and L<File::Spec::Unix>. This package overrides the
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implementation of these methods, not the semantics.
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=cut
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sub _canon_cat # @path -> path
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{
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my ($first, @rest) = @_;
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my $volume = $first =~ s{ \A ([A-Za-z]:) ([\\/]?) }{}x # drive letter
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? ucfirst( $1 ).( $2 ? "\\" : "" )
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: $first =~ s{ \A (?:\\\\|//) ([^\\/]+)
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(?: [\\/] ([^\\/]+) )?
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[\\/]? }{}xs # UNC volume
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? "\\\\$1".( defined $2 ? "\\$2" : "" )."\\"
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: $first =~ s{ \A [\\/] }{}x # root dir
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? "\\"
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: "";
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my $path = join "\\", $first, @rest;
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$path =~ tr#\\/#\\\\#s; # xx/yy --> xx\yy & xx\\yy --> xx\yy
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# xx/././yy --> xx/yy
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$path =~ s{(?:
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(?:\A|\\) # at begin or after a slash
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\.
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(?:\\\.)* # and more
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(?:\\|\z) # at end or followed by slash
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)+ # performance boost -- I do not know why
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}{\\}gx;
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# xx\yy\..\zz --> xx\zz
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while ( $path =~ s{(?:
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(?:\A|\\) # at begin or after a slash
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[^\\]+ # rip this 'yy' off
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\\\.\.
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(?<!\A\.\.\\\.\.) # do *not* replace ^..\..
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(?<!\\\.\.\\\.\.) # do *not* replace \..\..
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(?:\\|\z) # at end or followed by slash
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)+ # performance boost -- I do not know why
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}{\\}sx ) {}
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$path =~ s#\A\\##; # \xx --> xx NOTE: this is *not* root
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$path =~ s#\\\z##; # xx\ --> xx
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if ( $volume =~ m#\\\z# )
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{ # <vol>\.. --> <vol>\
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$path =~ s{ \A # at begin
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\.\.
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(?:\\\.\.)* # and more
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(?:\\|\z) # at end or followed by slash
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}{}x;
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return $1 # \\HOST\SHARE\ --> \\HOST\SHARE
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if $path eq ""
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and $volume =~ m#\A(\\\\.*)\\\z#s;
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}
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return $path ne "" || $volume ? $volume.$path : ".";
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}
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1;
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Block a user