A Subroutine to Find and Extract Data from an AFOS Database Product

摘要

A subroutine consisting of routines FIND and XTRACT has been written to aid in searching for and extracting data from AFOS database products. The search routine, FIND, will locate the occurrence and position of a user-defined pattern in the AFOS product. The implementation of metacharacters to alter the normal search process makes the routine very flexible. The extraction routine, XTRACT, will retrieve a copy of the data as well as locate it in the AFOS product. The subroutine runs within the environment of the calling program. It is designed to be called from a program running in the background partition of the AFOS Eclipse S/230 minicomputer. The routines FIND and XTRACT are written in Data General's assembly language for the Eclipse. The routines have been combined into a single subroutine with two entry points.