#!/usr/bin/perl
#
#
# CTMOD 
#
# ctmod ctreefile pattern command param1 param2
#                         <blank> = view
#                         <test>  = subst/param1/param2/ + print
#                         <subst> = subst/param1/param2/ + print + update
#                         <del>   = delete record 
#
# Author: Robert Eden  rmeden@yahoo.com

use Db::Ctree qw(:ALL);

die"ctmod ctreefile pattern command param1 param2
                         <blank> = view
                         <test>  = subst/param1/param2/ + print
                         <subst> = subst/param1/param2/ + print + update
                         <del>   = delete record \n"
     if $#ARGV < 1;
$ABORT = 0;
$SIG{INT}  = sub { $ABORT = 1 };
$SIG{TERM} = sub { $ABORT = 1 };

$filename = shift;
$pattern  = shift;
$command  = shift;
$param1   = shift;
$param2   = shift;

#die "ctmod ctreefile action paramter\n";

die "parameters of unequal length\n" if length($param1) != length($param2);

$filename .= ".dat" unless $filename =~ /\.dat$/;
unless (-e $filename)
{
   $filename = "/appl/plexar/master/$filename"
}
die "$filename not found "     unless -e $filename;

#
# open database
#
InitISAM(20,5,8);

$dbptr = new Db::Ctree(0, $filename, &SHARED);

$record = $dbptr -> fetch_first();
#$record = $dbptr -> fetch_gte('O014KSCY1998070818192');
while ($record)
{
#   last unless $record =~ /O014KSCY1998070818192/;
   print "rec $reccnt\n" unless ++$reccnt % 1000;
   if ( $record =~ m/$pattern/ )
    {
           print "old $record\n";

           if ($command eq "test")
           {
              $record =~ s/$param1/$param2/;
              print "new $record\n\n";
           }
           elsif ($command eq "subst")
           {
              $record =~ s/$param1/$param2/;
              print "new $record\n\n";

				Begin( &TRNLOG | & ENABLE );
#        $status = &ReWriteVRecord($dbptr->{DBNO},$record,length($record));
         $status = &ReWriteRecord($dbptr->{DBNO},$record);
				Commit( &FREE);
              die "stop $status" if $status;
           }
           elsif ($command eq "del")
           {
				Begin( &TRNLOG | & ENABLE );
                 $status = &DeleteRecord($dbptr->{DBNO});
                 die "stop $status" if $status;
				Commit( &FREE);
           }
    }

   last if $ABORT;
   $record = $dbptr -> fetch_next();
} # record loop

die &isam_err." Error on Read" if (&isam_err and
                                   &isam_err != &Db::Ctree::INOT_ERR);