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local/lib/perl5/Module/Build/Platform/Windows.pm  view on Meta::CPAN

    if NOT "%COMSPEC%" == "%SystemRoot%\\system32\\cmd.exe" goto endofperl
    if %errorlevel% == 9009 echo You do not have Perl in your PATH.
    if errorlevel 1 goto script_failed_so_exit_with_non_zero_val 2>nul
    goto endofperl
    \@rem ';
EOT

  $head =~ s/^\s+//gm;
  my $headlines = 2 + ($head =~ tr/\n/\n/);
  my $tail = "\n__END__\n:endofperl\n";

  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 die "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 die "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 _quote_args {
  # Returns a string that can become [part of] a command line with
  # proper quoting so that the subprocess sees this same list of args.
  my ($self, @args) = @_;

  my @quoted;

  for (@args) {
    if ( /^[^\s*?!\$<>;|'"\[\]\{\}]+$/ ) {
      # Looks pretty safe
      push @quoted, $_;
    } else {
      # XXX this will obviously have to improve - is there already a
      # core module lying around that does proper quoting?
      s/"/\\"/g;
      push @quoted, qq("$_");
    }
  }

  return join " ", @quoted;
}


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.

  (my $self, local $_) = @_;

  return @$_ if defined() && ref() eq 'ARRAY';

  my @argv;
  return @argv unless defined() && length();

  my $length = length;
  m/\G\s*/gc;

  ARGS: until ( pos == $length ) {
    my $quote_mode;
    my $arg = '';
    CHARS: until ( pos == $length ) {
      if ( m/\G((?:\\\\)+)(?=\\?(")?)/gc ) {
          if (defined $2) {
              $arg .= '\\' x (length($1) / 2);
          }
          else {
              $arg .= $1;
          }
      }
      elsif ( m/\G\\"/gc ) {
        $arg .= '"';
      }
      elsif ( m/\G"/gc ) {
        if ( $quote_mode && m/\G"/gc ) {
            $arg .= '"';
        }
        $quote_mode = !$quote_mode;
      }