#!/usr/bin/perl -w
#
# This is a simple tool to convert OpenLDAP Schema files to
# LDIF suitable for usage with OpenLDAP's dynamic configuration
# backend (cn=config)
#
# usage:
# schema2ldif.pl <input file>
#
# The generated LDIF is printed to stdout.
#

use strict;
use File::Basename;
use Text::Wrap;

my $infile = $ARGV[0] || print_usage();

sub print_usage
{
    print STDERR "usage: schema2ldif.pl <input file>\n";
    exit(1);
}

open( SCHEMA, "< $infile");

my $schemaline = "";
$Text::Wrap::columns=78;
$Text::Wrap::separator="\n ";

my $cn = basename($infile, ".schema");
print STDOUT "dn: cn=$cn,cn=schema,cn=config\n";
print STDOUT "objectClass: olcSchemaConfig\n"; 
print STDOUT "cn: $cn\n"; 
while ( <SCHEMA> )
{
    my $line = $_;
    if ( $line =~ /^\s+(.+)$/ )
    {
        $schemaline .= " $1";
        next;
    }
    elsif ( $schemaline ne "" )
    {
        print STDOUT wrap(""," ", $schemaline);
        print STDOUT "\n";
        $schemaline = "";
    }
    if ( $line =~ /^#/ ) 
    {
        print STDOUT $line;
    }
    elsif ( $line =~ /^\s*$/ )
    {
        print STDOUT "#\n";
    }
    elsif ( $line =~ /^(objectclass|attributetype|objectidentifier)\s+(.+)$/i )
    {
        if ( lc($1) eq "objectidentifier" )
        {
            $schemaline .= "olcObjectIdentifier: ";
        }
        elsif ( lc($1) eq "objectclass" )
        {
            $schemaline .= "olcObjectClasses: ";
        }
        elsif ( lc($1) eq "attributetype" )
        {
            $schemaline .= "olcAttributeTypes: ";
        }
        $schemaline .= $2;
    }
}