Skipping filters based on field value

[revilord]

I am converting an EBCDIC file complete with packed decimal. Someone thought of the bright idea of putting 2 record types in the outpt file sent to me. The file is fixed with and in field position 54 is equal to 1 its one record type and its not equal to 1 then its the other record type. I have filters set up like so.

restrict to block length 100
....restrict bytes 76-79
.......expand packed decimal
Convert to EBCDIC
...


All I need to do is skip the expand packed decimal if position 54 equals 1 and I am set to go. Any suggections how I might do this.

[DataMystic Support]

Inside your restrict to block lenght 100, use two pattern matches as a restriction.

The first matches '1' records:
.{53}1.{46}
Inside this put your expand packed decimal expansion.

The other matches not '1' records
.{53}[^1].{46}