lib/perl5/5.6.1/msys/GDBM_File.pm

   1 # GDBM_File.pm -- Perl 5 interface to GNU gdbm library.
   2
   3 =head1 NAME
   4
   5 GDBM_File - Perl5 access to the gdbm library.
   6
   7 =head1 SYNOPSIS
   8
   9     use GDBM_File ;
  10     tie %hash, 'GDBM_File', $filename, &GDBM_WRCREAT, 0640;
  11     # Use the %hash array.
  12     untie %hash ;
  13
  14 =head1 DESCRIPTION
  15
  16 B<GDBM_File> is a module which allows Perl programs to make use of the
  17 facilities provided by the GNU gdbm library.  If you intend to use this
  18 module you should really have a copy of the gdbm manualpage at hand.
  19
  20 Most of the libgdbm.a functions are available through the GDBM_File
  21 interface.
  22
  23 =head1 AVAILABILITY
  24
  25 Gdbm is available from any GNU archive.  The master site is
  26 C<prep.ai.mit.edu>, but your are strongly urged to use one of the many
  27 mirrors.   You can obtain a list of mirror sites by issuing the
  28 command C<finger fsf@prep.ai.mit.edu>.
  29
  30 =head1 BUGS
  31
  32 The available functions and the gdbm/perl interface need to be documented.
  33
  34 =head1 SEE ALSO
  35
  36 L<perl(1)>, L<DB_File(3)>, L<perldbmfilter>.
  37
  38 =cut
  39
  40 package GDBM_File;
  41
  42 use strict;
  43 use warnings;
  44 our($VERSION, @ISA, @EXPORT, $AUTOLOAD);
  45
  46 require Carp;
  47 require Tie::Hash;
  48 require Exporter;
  49 use AutoLoader;
  50 use XSLoader ();
  51 @ISA = qw(Tie::Hash Exporter);
  52 @EXPORT = qw(
  53         GDBM_CACHESIZE
  54         GDBM_FAST
  55         GDBM_INSERT
  56         GDBM_NEWDB
  57         GDBM_NOLOCK
  58         GDBM_READER
  59         GDBM_REPLACE
  60         GDBM_WRCREAT
  61         GDBM_WRITER
  62 );
  63
  64 $VERSION = "1.05";
  65
  66 sub AUTOLOAD {
  67     my($constname);
  68     ($constname = $AUTOLOAD) =~ s/.*:://;
  69     my $val = constant($constname, @_ ? $_[0] : 0);
  70     if ($! != 0) {
  71         if ($! =~ /Invalid/ || $!{EINVAL}) {
  72             $AutoLoader::AUTOLOAD = $AUTOLOAD;
  73             goto &AutoLoader::AUTOLOAD;
  74         }
  75         else {
  76             Carp::croak("Your vendor has not defined GDBM_File macro $constname, used");
  77         }
  78     }
  79     eval "sub $AUTOLOAD { $val }";
  80     goto &$AUTOLOAD;
  81 }
  82
  83 XSLoader::load 'GDBM_File', $VERSION;
  84
  85 # Preloaded methods go here.  Autoload methods go after __END__, and are
  86 # processed by the autosplit program.
  87
  88 1;
  89 __END__