constant.t

source of perl for linux application,

#!/usr/bin/perl -w

BEGIN {
    if( $ENV{PERL_CORE} ) {
        chdir 't' if -d 't';
        @INC = '../lib';
    }
    use Config;
    unless ($Config{usedl}) {
	print "1..0 # no usedl, skipping\n";
	exit 0;
    }
}

# use warnings;
use strict;
use ExtUtils::MakeMaker;
use ExtUtils::Constant qw (C_constant autoload);
use File::Spec;
use Cwd;

my $do_utf_tests = $] > 5.006;
my $better_than_56 = $] > 5.007;
# For debugging set this to 1.
my $keep_files = 0;
$| = 1;

# Because were are going to be changing directory before running Makefile.PL
my $perl = $^X;
# 5.005 doesn't have new enough File::Spec to have rel2abs. But actually we
# only need it when $^X isn't absolute, which is going to be 5.8.0 or later
# (where ExtUtils::Constant is in the core, and tests against the uninstalled
# perl)
$perl = File::Spec->rel2abs ($perl) unless $] < 5.006;
# ExtUtils::Constant::C_constant uses $^X inside a comment, and we want to
# compare output to ensure that it is the same. We were probably run as ./perl
# whereas we will run the child with the full path in $perl. So make $^X for
# us the same as our child will see.
$^X = $perl;
my $lib = $ENV{PERL_CORE} ? '../../../lib' : '../../blib/lib';
my $runperl = "$perl \"-I$lib\"";
print "# perl=$perl\n";

my $make = $Config{make};
$make = $ENV{MAKE} if exists $ENV{MAKE};
if ($^O eq 'MSWin32' && $make eq 'nmake') { $make .= " -nologo"; }

# VMS may be using something other than MMS/MMK
my $mms_or_mmk = 0;
if ($^O eq 'VMS') {
   $mms_or_mmk = 1 if (($make eq 'MMK') || ($make eq 'MMS'));
}

# Renamed by make clean
my $makefile = ($mms_or_mmk ? 'descrip' : 'Makefile');
my $makefile_ext = ($mms_or_mmk ? '.mms' : '');
my $makefile_rename = $makefile . ($mms_or_mmk ? '.mms_old' : '.old');

my $output = "output";
my $package = "ExtTest";
my $dir = "ext-$$";
my $subdir = 0;
# The real test counter.
my $realtest = 1;

my $orig_cwd = cwd;
my $updir = File::Spec->updir;
die "Can't get current directory: $!" unless defined $orig_cwd;

print "# $dir being created...\n";
mkdir $dir, 0777 or die "mkdir: $!\n";

END {
  if (defined $orig_cwd and length $orig_cwd) {
    chdir $orig_cwd or die "Can't chdir back to '$orig_cwd': $!";
    use File::Path;
    print "# $dir being removed...\n";
    rmtree($dir) unless $keep_files;
  } else {
    # Can't get here.
    die "cwd at start was empty, but directory '$dir' was created" if $dir;
  }
}

chdir $dir or die $!;
push @INC, '../../lib', '../../../lib';

package TieOut;

sub TIEHANDLE {
    my $class = shift;
    bless(\( my $ref = ''), $class);
}

sub PRINT {
    my $self = shift;
    $$self .= join('', @_);
}

sub PRINTF {
    my $self = shift;
    $$self .= sprintf shift, @_;
}

sub read {
    my $self = shift;
    return substr($$self, 0, length($$self), '');
}

package main;

sub check_for_bonus_files {
  my $dir = shift;
  my %expect = map {($^O eq 'VMS' ? lc($_) : $_), 1} @_;

  my $fail;
  opendir DIR, $dir or die "opendir '$dir': $!";
  while (defined (my $entry = readdir DIR)) {
    $entry =~ s/\.$// if $^O eq 'VMS';  # delete trailing dot that indicates no extension
    next if $expect{$entry};
    print "# Extra file '$entry'\n";
    $fail = 1;
  }

  closedir DIR or warn "closedir '.': $!";
  if ($fail) {
    print "not ok $realtest\n";
  } else {
    print "ok $realtest\n";
  }
  $realtest++;
}

sub build_and_run {
  my ($tests, $expect, $files) = @_;
  my $core = $ENV{PERL_CORE} ? ' PERL_CORE=1' : '';
  my @perlout = `$runperl Makefile.PL $core`;
  if ($?) {
    print "not ok $realtest # $runperl Makefile.PL failed: $?\n";
    print "# $_" foreach @perlout;
    exit($?);
  } else {
    print "ok $realtest\n";
  }
  $realtest++;

  if (-f "$makefile$makefile_ext") {
    print "ok $realtest\n";
  } else {
    print "not ok $realtest\n";
  }
  $realtest++;

  my @makeout;

  if ($^O eq 'VMS') { $make .= ' all'; }

  # Sometimes it seems that timestamps can get confused

  # make failed: 256
  # Makefile out-of-date with respect to Makefile.PL
  # Cleaning current config before rebuilding Makefile...
  # make -f Makefile.old clean > /dev/null 2>&1 || /bin/sh -c true
  # ../../perl "-I../../../lib" "-I../../../lib" Makefile.PL "PERL_CORE=1"
  # Checking if your kit is complete...                         
  # Looks good
  # Writing Makefile for ExtTest
  # ==> Your Makefile has been rebuilt. <==
  # ==> Please rerun the make command.  <==
  # false

  my $timewarp = (-M "Makefile.PL") - (-M "$makefile$makefile_ext");
  # Convert from days to seconds
  $timewarp *= 86400;
  print "# Makefile.PL is $timewarp second(s) older than $makefile$makefile_ext\n";
  if ($timewarp < 0) {
      # Sleep for a while to catch up.
      $timewarp = -$timewarp;
      $timewarp+=2;
      $timewarp = 10 if $timewarp > 10;
      print "# Sleeping for $timewarp second(s) to try to resolve this\n";
      sleep $timewarp;
  }

  print "# make = '$make'\n";
  @makeout = `$make`;
  if ($?) {
    print "not ok $realtest # $make failed: $?\n";
    print "# $_" foreach @makeout;
    exit($?);
  } else {
    print "ok $realtest\n";
  }
  $realtest++;

  if ($^O eq 'VMS') { $make =~ s{ all}{}; }

  if ($Config{usedl}) {
    print "ok $realtest # This is dynamic linking, so no need to make perl\n";
  } else {
    my $makeperl = "$make perl";
    print "# make = '$makeperl'\n";
    @makeout = `$makeperl`;
    if ($?) {
      print "not ok $realtest # $makeperl failed: $?\n";
      print "# $_" foreach @makeout;
      exit($?);
    } else {
      print "ok $realtest\n";
    }
  }
  $realtest++;

  my $maketest = "$make test";
  print "# make = '$maketest'\n";

  @makeout = `$maketest`;

  if (open OUTPUT, "<$output") {
    local $/; # Slurp it - faster.
    print <OUTPUT>;
    close OUTPUT or print "# Close $output failed: $!\n";
  } else {
    # Harness will report missing test results at this point.
    print "# Open <$output failed: $!\n";
  }

  $realtest += $tests;
  if ($?) {
    print "not ok $realtest # $maketest failed: $?\n";
    print "# $_" foreach @makeout;
  } else {
    print "ok $realtest - maketest\n";
  }
  $realtest++;

  if (defined $expect) {
      # -x is busted on Win32 < 5.6.1, so we emulate it.
      my $regen;
      if( $^O eq 'MSWin32' && $] <= 5.006001 ) {
	  open(REGENTMP, ">regentmp") or die $!;
	  open(XS, "$package.xs")     or die $!;
	  my $saw_shebang;
	  while(<XS>) {
	      $saw_shebang++ if /^#!.*/i ;
	      print REGENTMP $_ if $saw_shebang;
	  }
	  close XS;  close REGENTMP;
	  $regen = `$runperl regentmp`;
	  unlink 'regentmp';
      }
      else {
	  $regen = `$runperl -x $package.xs`;
      }
      if ($?) {
	  print "not ok $realtest # $runperl -x $package.xs failed: $?\n";
	  } else {
	      print "ok $realtest - regen\n";
	  }
      $realtest++;

      if ($expect eq $regen) {
	  print "ok $realtest - regen worked\n";
      } else {
	  print "not ok $realtest - regen worked\n";
	  # open FOO, ">expect"; print FOO $expect;
	  # open FOO, ">regen"; print FOO $regen; close FOO;
      }
      $realtest++;
  } else {
    for (0..1) {
      print "ok $realtest # skip no regen or expect for this set of tests\n";
      $realtest++;
    }
  }

  my $makeclean = "$make clean";
  print "# make = '$makeclean'\n";
  @makeout = `$makeclean`;
  if ($?) {
    print "not ok $realtest # $make failed: $?\n";
    print "# $_" foreach @makeout;
  } else {
    print "ok $realtest\n";
  }
  $realtest++;

  check_for_bonus_files ('.', @$files, $output, $makefile_rename, '.', '..');

  rename $makefile_rename, $makefile . $makefile_ext
    or die "Can't rename '$makefile_rename' to '$makefile$makefile_ext': $!";

  unlink $output or warn "Can't unlink '$output': $!";

  # Need to make distclean to remove ../../lib/ExtTest.pm
  my $makedistclean = "$make distclean";
  print "# make = '$makedistclean'\n";
  @makeout = `$makedistclean`;
  if ($?) {
    print "not ok $realtest # $make failed: $?\n";
    print "# $_" foreach @makeout;
  } else {
    print "ok $realtest\n";
  }
  $realtest++;

  check_for_bonus_files ('.', @$files, '.', '..');

  unless ($keep_files) {
    foreach (@$files) {
      unlink $_ or warn "unlink $_: $!";
    }
  }

  check_for_bonus_files ('.', '.', '..');
}

sub Makefile_PL {
  my $package = shift;
  ################ Makefile.PL
  # We really need a Makefile.PL because make test for a no dynamic linking perl
  # will run Makefile.PL again as part of the "make perl" target.
  my $makefilePL = "Makefile.PL";
  open FH, ">$makefilePL" or die "open >$makefilePL: $!\n";
  print FH <<"EOT";
#!$perl -w
use ExtUtils::MakeMaker;
WriteMakefile(
              'NAME'		=> "$package",
              'VERSION_FROM'	=> "$package.pm", # finds \$VERSION
              (\$] >= 5.005 ?
               (#ABSTRACT_FROM => "$package.pm", # XXX add this
                AUTHOR     => "$0") : ())
             );
EOT

  close FH or die "close $makefilePL: $!\n";
  return $makefilePL;
}

sub MANIFEST {
  my (@files) = @_;
  ################ MANIFEST
  # We really need a MANIFEST because make distclean checks it.
  my $manifest = "MANIFEST";
  push @files, $manifest;
  open FH, ">$manifest" or die "open >$manifest: $!\n";
  print FH "$_\n" foreach @files;
  close FH or die "close $manifest: $!\n";
  return @files;
}

sub write_and_run_extension {
  my ($name, $items, $export_names, $package, $header, $testfile, $num_tests,
      $wc_args) = @_;

  my $c = tie *C, 'TieOut';
  my $xs = tie *XS, 'TieOut';

  ExtUtils::Constant::WriteConstants(C_FH => \*C,
				     XS_FH => \*XS,
				     NAME => $package,
				     NAMES => $items,
				     @$wc_args,
				     );

  my $C_code = $c->read();
  my $XS_code = $xs->read();

  undef $c;
  undef $xs;

  untie *C;
  untie *XS;

  # Don't check the regeneration code if we specify extra arguments to
  # WriteConstants. (Fix this to give finer grained control if needed)
  my $expect;
  $expect = $C_code . "\n#### XS Section:\n" . $XS_code unless $wc_args;

  print "# $name\n# $dir/$subdir being created...\n";
  mkdir $subdir, 0777 or die "mkdir: $!\n";
  chdir $subdir or die $!;

  my @files;

  ################ Header
  my $header_name = "test.h";
  push @files, $header_name;
  open FH, ">$header_name" or die "open >$header_name: $!\n";
  print FH $header or die $!;
  close FH or die "close $header_name: $!\n";

  ################ XS
  my $xs_name = "$package.xs";
  push @files, $xs_name;
  open FH, ">$xs_name" or die "open >$xs_name: $!\n";

  print FH <<"EOT";
#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"
#include "$header_name"


$C_code
MODULE = $package		PACKAGE = $package
PROTOTYPES: ENABLE
$XS_code;
EOT

  close FH or die "close $xs: $!\n";

  ################ PM
  my $pm = "$package.pm";
  push @files, $pm;
  open FH, ">$pm" or die "open >$pm: $!\n";
  print FH "package $package;\n";
  print FH "use $];\n";

  print FH <<'EOT';

use strict;
EOT
  printf FH "use warnings;\n" unless $] < 5.006;
  print FH <<'EOT';
use Carp;

require Exporter;
require DynaLoader;
use vars qw ($VERSION @ISA @EXPORT_OK $AUTOLOAD);

$VERSION = '0.01';
@ISA = qw(Exporter DynaLoader);
EOT
  # Having this qw( in the here doc confuses cperl mode far too much to be
  # helpful. And I'm using cperl mode to edit this, even if you're not :-)
  print FH "\@EXPORT_OK = qw(\n";

  # Print the names of all our autoloaded constants
  print FH "\t$_\n" foreach (@$export_names);
  print FH ");\n";
  # Print the AUTOLOAD subroutine ExtUtils::Constant generated for us
  print FH autoload ($package, $]);
  print FH "bootstrap $package \$VERSION;\n1;\n__END__\n";
  close FH or die "close $pm: $!\n";

  ################ test.pl
  my $testpl = "test.pl";
  push @files, $testpl;
  open FH, ">$testpl" or die "open >$testpl: $!\n";
  # Standard test header (need an option to suppress this?)
  print FH <<"EOT" or die $!;
use strict;
use $package qw(@$export_names);

print "1..2\n";
if (open OUTPUT, ">$output") {
  print "ok 1\n";
  select OUTPUT;
} else {
  print "not ok 1 # Failed to open '$output': \$!\n";
  exit 1;
}
EOT
  print FH $testfile or die $!;
  print FH <<"EOT" or die $!;
select STDOUT;
if (close OUTPUT) {
  print "ok 2\n";
} else {
  print "not ok 2 # Failed to close '$output': \$!\n";
}
EOT
  close FH or die "close $testpl: $!\n";

  push @files, Makefile_PL($package);
  @files = MANIFEST (@files);

  build_and_run ($num_tests, $expect, \@files);

  chdir $updir or die "chdir '$updir': $!";
  ++$subdir;
}

# Tests are arrayrefs of the form
# $name, [items], [export_names], $package, $header, $testfile, $num_tests
my @tests;
my $before_tests = 4; # Number of "ok"s emitted to build extension
my $after_tests = 8; # Number of "ok"s emitted after make test run
my $dummytest = 1;

my $here;
sub start_tests {
  $dummytest += $before_tests;
  $here = $dummytest;
}
sub end_tests {
  my ($name, $items, $export_names, $header, $testfile, $args) = @_;
  push @tests, [$name, $items, $export_names, $package, $header, $testfile,
               $dummytest - $here, $args];
  $dummytest += $after_tests;
}

my $pound;
if (ord('A') == 193) {  # EBCDIC platform
  $pound = chr 177; # A pound sign. (Currency)
} else { # ASCII platform
  $pound = chr 163; # A pound sign. (Currency)
}
my @common_items = (
                    {name=>"perl", type=>"PV",},
                    {name=>"*/", type=>"PV", value=>'"CLOSE"', macro=>1},
                    {name=>"/*", type=>"PV", value=>'"OPEN"', macro=>1},
                    {name=>$pound, type=>"PV", value=>'"Sterling"', macro=>1},
                   );

my @args = undef;