ACIL FM

Pilih semua

Nama	Ukuran	Aksi
Base.pm	32.54 MB	View DL Edit
ProxySubs.pm	19.28 MB	View DL Edit
Utils.pm	3.44 MB	View DL Edit
XS.pm	6.2 MB	View DL Edit

Edit file: /usr/share/perl5/ExtUtils/Constant/Utils.pm

package ExtUtils::Constant::Utils;

use strict;
use vars qw($VERSION @EXPORT_OK @ISA);
use Carp;

@ISA = 'Exporter';
@EXPORT_OK = qw(C_stringify perl_stringify);
$VERSION = '0.04';

use constant is_perl55 => ($] < 5.005_50);
use constant is_perl56 => ($] < 5.007 && $] > 5.005_50);
use constant is_sane_perl => $] > 5.007;

=head1 NAME

ExtUtils::Constant::Utils - helper functions for ExtUtils::Constant

=head1 SYNOPSIS

use ExtUtils::Constant::Utils qw (C_stringify);
    $C_code = C_stringify $stuff;

=head1 DESCRIPTION

ExtUtils::Constant::Utils packages up utility subroutines used by
ExtUtils::Constant, ExtUtils::Constant::Base and derived classes. All its
functions are explicitly exportable.

=head1 USAGE

=over 4

=item C_stringify NAME

A function which returns a 7 bit ASCII correctly \ escaped version of the
string passed suitable for C's "" or ''. It will die if passed Unicode
characters.

=cut

# Hopefully make a happy C identifier.
sub C_stringify {
  local $_ = shift;
  return unless defined $_;
  # grr 5.6.1
  confess "Wide character in '$_' intended as a C identifier"
    if tr/\0-\377// != length;
  # grr 5.6.1 more so because its regexps will break on data that happens to
  # be utf8, which includes my 8 bit test cases.
  $_ = pack 'C*', unpack 'U*', $_ . pack 'U*' if is_perl56;
  s/\\/\\\\/g;
  s/([\"\'])/\\$1/g;	# Grr. fix perl mode.
  s/\n/\\n/g;		# Ensure newlines don't end up in octal
  s/\r/\\r/g;
  s/\t/\\t/g;
  s/\f/\\f/g;
  s/\a/\\a/g;
  unless (is_perl55) {
    # This will elicit a warning on 5.005_03 about [: :] being reserved unless
    # I cheat
    my $cheat = '([[:^print:]])';

if (ord('A') == 193) { # EBCDIC has no ^\0-\177 workalike.
      s/$cheat/sprintf "\\%03o", ord $1/ge;
    } else {
      s/([^\0-\177])/sprintf "\\%03o", ord $1/ge;
    }

s/$cheat/sprintf "\\%03o", ord $1/ge;
  } else {
    require POSIX;
    s/([^A-Za-z0-9_])/POSIX::isprint($1) ? $1 : sprintf "\\%03o", ord $1/ge;
  }
  $_;
}

=item perl_stringify NAME

A function which returns a 7 bit ASCII correctly \ escaped version of the
string passed suitable for a perl "" string.

=cut

# Hopefully make a happy perl identifier.
sub perl_stringify {
  local $_ = shift;
  return unless defined $_;
  s/\\/\\\\/g;
  s/([\"\'])/\\$1/g;	# Grr. fix perl mode.
  s/\n/\\n/g;		# Ensure newlines don't end up in octal
  s/\r/\\r/g;
  s/\t/\\t/g;
  s/\f/\\f/g;
  s/\a/\\a/g;
  unless (is_perl55) {
    # This will elicit a warning on 5.005_03 about [: :] being reserved unless
    # I cheat
    my $cheat = '([[:^print:]])';
    if (is_sane_perl) {
	if (ord('A') == 193) { # EBCDIC has no ^\0-\177 workalike.
	    s/$cheat/sprintf "\\x{%X}", ord $1/ge;
	} else {
	    s/([^\0-\177])/sprintf "\\x{%X}", ord $1/ge;
	}
    } else {
      # Grr 5.6.1. And I don't think I can use utf8; to force the regexp
      # because 5.005_03 will fail.
      # This is grim, but I also can't split on //
      my $copy;
      foreach my $index (0 .. length ($_) - 1) {
        my $char = substr ($_, $index, 1);
        $copy .= ($char le "\177") ? $char : sprintf "\\x{%X}", ord $char;
      }
      $_ = $copy;
    }
    s/$cheat/sprintf "\\%03o", ord $1/ge;
  } else {
    # Turns out "\x{}" notation only arrived with 5.6
    s/([^\0-\177])/sprintf "\\x%02X", ord $1/ge;
    require POSIX;
    s/([^A-Za-z0-9_])/POSIX::isprint($1) ? $1 : sprintf "\\%03o", ord $1/ge;
  }
  $_;
}

1;
__END__

=back

=head1 AUTHOR

Nicholas Clark <nick@ccl4.org> based on the code in C<h2xs> by Larry Wall and
others

Batal

Isi Zip:

Create