ExtUtils-Helpers-0.022HEADExtUtils-Helpers-0.022master

1 files changed, 214 insertions, 0 deletions

diff --git a/lib/ExtUtils/Helpers/Windows.pm b/lib/ExtUtils/Helpers/Windows.pm
new file mode 100644
index 0000000..62d38d1
--- /dev/null
+++ b/lib/ExtUtils/Helpers/Windows.pm
@@ -0,0 +1,214 @@
+package ExtUtils::Helpers::Windows;
+$ExtUtils::Helpers::Windows::VERSION = '0.022';
+use strict;
+use warnings FATAL => 'all';
+
+use Exporter 5.57 'import';
+our @EXPORT = qw/make_executable split_like_shell detildefy/;
+
+use Config;
+use Carp qw/carp croak/;
+
+sub make_executable {
+	my $script = shift;
+	if (-T $script && $script !~ / \. (?:bat|cmd) $ /x) {
+		_pl2bat(in => $script, update => 1);
+	}
+	return;
+}
+
+# This routine was copied almost verbatim from the 'pl2bat' utility
+# distributed with perl. It requires too much voodoo with shell quoting
+# differences and shortcomings between the various flavors of Windows
+# to reliably shell out
+sub _pl2bat {
+	my %opts = @_;
+
+	# NOTE: %0 is already enclosed in doublequotes by cmd.exe, as appropriate
+	$opts{ntargs}    = '-x -S %0 %*';
+	$opts{otherargs} = '-x -S "%0" %1 %2 %3 %4 %5 %6 %7 %8 %9';
+
+	$opts{stripsuffix} = qr/\.plx?/ unless exists $opts{stripsuffix};
+
+	if (not exists $opts{out}) {
+		$opts{out} = $opts{in};
+		$opts{out} =~ s/$opts{stripsuffix}$//i;
+		$opts{out} .= '.bat' unless $opts{in} =~ /\.bat$/i or $opts{in} eq '-';
+	}
+
+	my $head = <<"EOT";
+	\@rem = '--*-Perl-*--
+	\@echo off
+	if "%OS%" == "Windows_NT" goto WinNT
+	perl $opts{otherargs}
+	\@set ErrorLevel=%ErrorLevel%
+	goto endofperl
+	:WinNT
+	perl $opts{ntargs}
+	\@set ErrorLevel=%ErrorLevel%
+	if NOT "%COMSPEC%" == "%SystemRoot%\\system32\\cmd.exe" goto endofperl
+	if %errorlevel% == 9009 echo You do not have Perl in your PATH.
+	goto endofperl
+	\@rem ';
+EOT
+
+	$head =~ s/^\s+//gm;
+	my $headlines = 2 + ($head =~ tr/\n/\n/);
+	my $tail = <<'EOT';
+	__END__
+	:endofperl
+	@"%COMSPEC%" /c exit /b %ErrorLevel%
+EOT
+	$tail =~ s/^\s+//gm;
+
+	my $linedone = 0;
+	my $taildone = 0;
+	my $linenum = 0;
+	my $skiplines = 0;
+
+	my $start = $Config{startperl};
+	$start = '#!perl' unless $start =~ /^#!.*perl/;
+
+	open my $in, '<', $opts{in} or croak "Can't open $opts{in}: $!";
+	my @file = <$in>;
+	close $in;
+
+	foreach my $line ( @file ) {
+		$linenum++;
+		if ( $line =~ /^:endofperl\b/ ) {
+			if (!exists $opts{update}) {
+				warn "$opts{in} has already been converted to a batch file!\n";
+				return;
+			}
+			$taildone++;
+		}
+		if ( not $linedone and $line =~ /^#!.*perl/ ) {
+			if (exists $opts{update}) {
+				$skiplines = $linenum - 1;
+				$line .= '#line '.(1+$headlines)."\n";
+			} else {
+	$line .= '#line '.($linenum+$headlines)."\n";
+			}
+	$linedone++;
+		}
+		if ( $line =~ /^#\s*line\b/ and $linenum == 2 + $skiplines ) {
+			$line = '';
+		}
+	}
+
+	open my $out, '>', $opts{out} or croak "Can't open $opts{out}: $!";
+	print $out $head;
+	print $out $start, ( $opts{usewarnings} ? ' -w' : '' ),
+						 "\n#line ", ($headlines+1), "\n" unless $linedone;
+	print $out @file[$skiplines..$#file];
+	print $out $tail unless $taildone;
+	close $out;
+
+	return $opts{out};
+}
+
+sub split_like_shell {
+	# As it turns out, Windows command-parsing is very different from
+	# Unix command-parsing.	Double-quotes mean different things,
+	# backslashes don't necessarily mean escapes, and so on.	So we
+	# can't use Text::ParseWords::shellwords() to break a command string
+	# into words.	The algorithm below was bashed out by Randy and Ken
+	# (mostly Randy), and there are a lot of regression tests, so we
+	# should feel free to adjust if desired.
+
+	local ($_) = @_;
+
+	my @argv;
+	return @argv unless defined && length;
+
+	my $arg = '';
+	my ($i, $quote_mode ) = ( 0, 0 );
+
+	while ( $i < length ) {
+
+		my $ch      = substr $_, $i, 1;
+		my $next_ch = substr $_, $i+1, 1;
+
+		if ( $ch eq '\\' && $next_ch eq '"' ) {
+			$arg .= '"';
+			$i++;
+		} elsif ( $ch eq '\\' && $next_ch eq '\\' ) {
+			$arg .= '\\';
+			$i++;
+		} elsif ( $ch eq '"' && $next_ch eq '"' && $quote_mode ) {
+			$quote_mode = !$quote_mode;
+			$arg .= '"';
+			$i++;
+		} elsif ( $ch eq '"' && $next_ch eq '"' && !$quote_mode &&
+				( $i + 2 == length() || substr( $_, $i + 2, 1 ) eq ' ' )
+			) { # for cases like: a"" => [ 'a' ]
+			push @argv, $arg;
+			$arg = '';
+			$i += 2;
+		} elsif ( $ch eq '"' ) {
+			$quote_mode = !$quote_mode;
+		} elsif ( $ch =~ /\s/ && !$quote_mode ) {
+			push @argv, $arg if $arg;
+			$arg = '';
+			++$i while substr( $_, $i + 1, 1 ) =~ /\s/;
+		} else {
+			$arg .= $ch;
+		}
+
+		$i++;
+	}
+
+	push @argv, $arg if defined $arg && length $arg;
+	return @argv;
+}
+
+sub detildefy {
+	my $value = shift;
+	$value =~ s{ ^ ~ (?= [/\\] | $ ) }[$ENV{USERPROFILE}]x if $ENV{USERPROFILE};
+	return $value;
+}
+
+1;
+
+# ABSTRACT: Windows specific helper bits
+
+__END__
+
+=pod
+
+=encoding UTF-8
+
+=head1 NAME
+
+ExtUtils::Helpers::Windows - Windows specific helper bits
+
+=head1 VERSION
+
+version 0.022
+
+=for Pod::Coverage make_executable
+split_like_shell
+detildefy
+
+=head1 AUTHORS
+
+=over 4
+
+=item *
+
+Ken Williams <kwilliams@cpan.org>
+
+=item *
+
+Leon Timmermans <leont@cpan.org>
+
+=back
+
+=head1 COPYRIGHT AND LICENSE
+
+This software is copyright (c) 2004 by Ken Williams, Leon Timmermans.
+
+This is free software; you can redistribute it and/or modify it under
+the same terms as the Perl 5 programming language system itself.
+
+=cut