#!perl -w

#

# remove_old_builds.pl

#

# usage:

# perl remove_old_builds.pl current_build_number build-directory required-free-space

#

use strict;

sub usage

    {

  print <<USAGE_EOF;

Usage: perl remove_old_builds.pl current_build build-directory required-bytes

where: current_build   = the number of the current build (e.g 00924_Symbian_OS_v9.1)

       build-directory = the top level directory containing the various builds

       required-bytes  = the free disk space required.

USAGE_EOF

    exit 1;

    }

sub freespace

    {

    my $dir = shift;

    open FDIR, "dir /-c $dir |" or die "Cannot open FDIR $dir";    # /-c = suppress thousand separators (commas)

    my $s= -1;      # Signifying "ERROR"

    while (<FDIR>)

        {

        if (/\s+(\d+) bytes free/) { $s=$1;}

        }

    return $s;

    }

my $current_build=$ARGV[0];

my $bld_dir=$ARGV[1];

my $space=$ARGV[2];

unless ($space) { usage() };    # Must have all three args. So check for last one only.

open DIRS, "dir /b /ad /od $bld_dir |" or die "Cannot open DIRS $bld_dir";     # /b = "bare output"  /ad = directories only   /od = sort by date

while (my $name = <DIRS>)

    {

       if (freespace($bld_dir) >= $space)

       { last; }

       chomp $name;

       chomp $current_build;

       if(($name =~ /^((D|T|M|MSF|TB|E|(\d{2,3}_))?(\d+))(([a-z]\.\d+)|([a-z])|(\.\d+))?/) && ($name ne $current_build))

       {

                print "Removing $bld_dir\\$name\n";

                if (system("rmdir /s /q $bld_dir\\$name"))

                {

                    print "ERROR: Failed to remove: $bld_dir\\$name\n";

                }

       }

    }

close DIRS;

if (freespace($bld_dir) < $space)

    {

    print "ERROR: Cannot create $space free bytes in $bld_dir\n";

    exit 1;

    }

exit 0;