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Click here to download plain text source code.

# subroutine name: readhash_nolock
# Reads all the data from $datafile
# Returns: reference to the HASH
# File format required: <key>\t<value>
sub readhash_nolock {
    my ($datafile) = @_;
    my %hash;
    local *DATA;
    if (open(DATA,"<$datafile")) {
        my @arr;
        while (my $line = <DATA>) {
            if ($line =~ m/^(.+?)\t(.*?)[\n\x0D\x0A]*$/) {
                my ($key,$value) = ($1, $2);
                push (@arr, (unsafe($key), unsafe($value)) );
            }
        }
        # Sort everything at once
        %hash = @arr;
        close(DATA);
    } else {
        die "Error in subroutine readhash: Can't open $datafile: $!";
    }
    \%hash;
}
 
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