#!/usr/bin/perl


if ($#ARGV != 1) {
    # 2 arguments mandatory
    print "Usage: $0 <old-cvs-host> <new-cvs-host>\n";
    print "\n";
    print "This script recurses from the current working directory, thus\n";
    print "you should run this script from the root of your checked-out\n";
    print "CVS tree.\n";  
    exit();
}

print <<EOWARN

**********************************************************************
                                WARNING
**********************************************************************

This script will recursively change every Root file in every CVS directory
in the current directory `pwd` and below it, substituting 

        $ARGV[0]        for       $ARGV[1]

EOWARN
    ;

$done = 0;
while(!$done) {
    print "Are you sure you want to proceed? (yes/no): ";
    chomp($answer = <STDIN>);
    if($answer =~ /^yes$/i) {
        $done = true;
    } elsif ($answer =~ /^no$/i) {
	exit(0);
    } else {
	print "Please answer yes or no.\n";
    }
}

open(FIND, "find . -name 'CVS' -type d -print|") || die "can't run find: $!";
while(<FIND>) {
    chomp;
    $cvsdir = $_;
    system("perl -pi.bak -e 's/$ARGV[0]/$ARGV[1]/;' $cvsdir/Root");
}
close(FIND);