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package GUID;
# ************************************************************
# Description : Generate GUID's for VC7 projects and workspaces
# Author : Chad Elliott
# Create Date : 5/14/2002
# ************************************************************
# ************************************************************
# Pragmas
# ************************************************************
use strict;
# ************************************************************
# Subroutine Section
# ************************************************************
sub new {
my($class) = shift;
my($self) = bless {
}, $class;
return $self;
}
sub generate {
my($self) = shift;
my($out) = shift;
my($in) = shift;
my($cwd) = shift;
my($chash) = $self->hash($cwd);
my($nhash) = $self->hash($out);
my($ihash) = $self->hash($in);
my($val) = 0xfeca1bad;
return sprintf("%08X-%04X-%04X-%04X-%04X%08X",
$nhash, ($val >> 16) & 0xffff, ($val & 0xffff),
($ihash >> 16) & 0xffff, $ihash & 0xffff, $chash);
}
sub hash {
my($self) = shift;
my($str) = shift;
my($value) = 0;
if (defined $str) {
my($length) = length($str);
for(my $i = 0; $i < $length; $i++) {
$value = ($value << 4) ^ ($value >> 28) ^ ord(substr($str, $i, 1));
}
}
return $value;
}
1;
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