perl/Git/SVN/Utils.pm

   1 package Git::SVN::Utils;
   2
   3 use strict;
   4 use warnings;
   5
   6 use base qw(Exporter);
   7
   8 our @EXPORT_OK = qw(fatal can_compress);
   9
  10
  11 =head1 NAME
  12
  13 Git::SVN::Utils - utility functions used across Git::SVN
  14
  15 =head1 SYNOPSIS
  16
  17     use Git::SVN::Utils qw(functions to import);
  18
  19 =head1 DESCRIPTION
  20
  21 This module contains functions which are useful across many different
  22 parts of Git::SVN.  Mostly it's a place to put utility functions
  23 rather than duplicate the code or have classes grabbing at other
  24 classes.
  25
  26 =head1 FUNCTIONS
  27
  28 All functions can be imported only on request.
  29
  30 =head3 fatal
  31
  32     fatal(@message);
  33
  34 Display a message and exit with a fatal error code.
  35
  36 =cut
  37
  38 # Note: not certain why this is in use instead of die.  Probably because
  39 # the exit code of die is 255?  Doesn't appear to be used consistently.
  40 sub fatal (@) { print STDERR "@_\n"; exit 1 }
  41
  42
  43 =head3 can_compress
  44
  45     my $can_compress = can_compress;
  46
  47 Returns true if Compress::Zlib is available, false otherwise.
  48
  49 =cut
  50
  51 my $can_compress;
  52 sub can_compress {
  53         return $can_compress if defined $can_compress;
  54
  55         return $can_compress = eval { require Compress::Zlib; };
  56 }
  57
  58
  59 1;