Helper.pm

   1 package Helper;
   2 use strict;
   3
   4 use Exporter();
   5 use vars qw($VERSION @ISA @EXPORT);
   6 $VERSION = 0.01;
   7 @ISA=qw(Exporter);
   8 @EXPORT=qw(&get_option);
   9
  10 sub get_option ($$) {
  11     my $file = 'Cache';
  12     my $response;
  13     my $var = shift;
  14
  15     require "$file.pm";
  16     if(defined($Cache::{$var})){
  17                         $response=$Cache::{$var};
  18                         return $$response;
  19                 }
  20
  21                 my $request = shift;
  22                 my $filename;
  23                 my $path;
  24                 foreach $path (@INC) {
  25                         $filename="$path/$file.pm";
  26                         last if (-e $filename);
  27                 }
  28                 print STDERR "Enter $request\n";
  29                 $response=<STDIN>;
  30                 chop($response);
  31                 open(CACHE,"<$filename") or die "Cannot open cache for reading";
  32                 undef $/;
  33                 my $cache = <CACHE>;
  34                 $/="\n";
  35                 close CACHE;
  36                 $cache =~ s/^(\@EXPORT\s*=\s*qw\(\s*[^\)]*)\)\s*;/$1 $var\)\;/msg;
  37                 $cache =~ s/^1;[\n\s]*\Z/\$$var=\"$response\"\;\n1\;\n/msg;
  38                 open(CACHE,">$filename") or die "Cannot open cache for writing";
  39                 print CACHE $cache;
  40                 close CACHE;
  41                 return $response;
  42 }
  43
  44 1;