 | Introduction to Conversion Series 3 |
| RM/COBOL Source Compatibility |  |
To successfully transfer your source programs and their associated data
files from an RM/COBOL to this environment, you must be familiar with:
- The operation of the application which you wish to transfer. This knowledge
is necessary if you are to ensure that the results given by the application are
the same in both environments
- The design and implementation of the application
- The COBOL language.
We advise that you carry out the following steps to ensure successful
migration from the RM/COBOL environment to this COBOL environment:
- Transfer all your source programs and their associated data files to the
target machine.
- If your source programs contain any TAB characters, run the tabx program to
expand them into a form that is acceptable to this COBOL system. See the section
The Tabx Program later in this chapter for details.
- If you wish to submit your source programs to this COBOL system in batch
mode, you must create a command file containing the commands needed to do this.
See your operating system documentation for details of the format of the command
file. See your Object COBOL User Guide for full details of the
commands needed to submit your source programs to this COBOL system.
- Submit your source programs to this COBOL system. The command to do this is
specific to your implementation. See your Object COBOL User Guide
for full details.
- Investigate the cause of any problems you may experience when you submit
your source programs to this COBOL system. The chapter RM/COBOL Conversion
Problem Solving describes known problems which you may experience and gives
hints on how you can recover if you receive them. Resubmit your corrected source
programs to this COBOL system.
- Test any sections of your source programs which do not use data files. If
you receive unexpected results see the chapter RM/COBOL Conversion Problem
Solving for a description of known problems you may experience in executing
your source programs, and hints on how to correct these. Alternatively, use the
debugging tool, Animator, to isolate and correct any problems.
- Ensure the ACCEPT/DISPLAY module Adis
is configured correctly. See your Programmer's Guide to Creating
User Interfaces for details.
- Run Convert3 to convert any existing data files used by your source
programs to a format that is acceptable to this COBOL system. See the chapters
Converting RM/COBOL Data Files, Running Convert3 and Using the File
Conversion Program for full details on how to use Convert3.
- Finish system testing.
- Archive your original data files to disk or tape.
If disk space on your system is limited you may not be able to have both the
old and the new copies of all your data files present on your system at the same
time. If this is the case, load and unload the data files gradually onto your
system during the conversion process.
If your RM/COBOL source programs contain any TAB characters, you must run
the tabx program before you can successfully submit them to this COBOL system.
This is necessary because each COBOL system handles TAB characters differently.
Under the RM/COBOL system the first TAB stop is at character position 8, while
subsequent TAB stops are at four character intervals up to position 72. However,
under this COBOL system, the first TAB stop is at character position 9, while
subsequent TAB stops are at eight character intervals.
The tabx program expands any TAB characters in your RM/COBOL source programs
to spaces. The resulting source code can be submitted successfully to either the
RM/COBOL or this COBOL system.
UNIX:
To run tabx on UNIX, enter the following command line:
tabx [-options] input-filename [output-filename]
DOS and OS/2:
To run tabx on DOS and OS/2, enter the following command line:
tabx [/options] input-filename [output-filename]
where the parameters are:
options |
Can be any of the following:
| v |
Sets verbose mode. Any messages are displayed upon
your screen |
| l |
Parameters are read from the file specified as
input-filename |
| t(tab-spec) |
Informs tabx of the positions at which TAB
characters are set. For example -t (16-8, 64) assumes tab positions are
initially at position 16, and then at eight character intervals up to column 64.
By default this is set to -t (8-4, 72) which is suitable for RM/COBOL source
programs. |
|
input-filename |
The file containing the RM/COBOL source program
|
output-filename |
The file to which the source program output by
tabx, is directed. If you do not specify output-filename,
tabx directs its output to input-filename, so overwriting
the original contents of input-filename |
If you do not specify any parameters, tabx displays the required format of
the parameters as above.
Examples
:
tabx -v myfile.cbl myfile.new
expands the TAB characters in the file myfile.cbl and outputs a new file,
myfile.new.
tabx -l filelist
tabx treats each line of the file filelist as a command line.
tabx myfile.cbl
expands the TAB characters in the file myfile.cbl and overwrites myfile.cbl
with the resulting source program.
Copyright © 1999 MERANT International Limited. All rights reserved.
This document and the proprietary marks and names
used herein are protected by international law.
| Introduction to Conversion Series 3 |
| RM/COBOL Source Compatibility | |