DEC Text Processing Utility Program Development

5.6 Using DECTPU Startup Files

This command causes DECTPU to write the binary form of the file MY_ APPLICATION.TPU to the file you specified as the parameter to the SAVE statement in your program. To use the section file, invoke DECTPU, specifying your section file.

For more information on invoking DECTPU, see Chapter 2.

5.6.5.2 Extending an Existing Section File

To extend an existing section file, begin by writing a program in the DECTPU language.

If you are extending the EVE section file, put your initializing statements in an initialization procedure called TPU$LOCAL_INIT. TPU$LOCAL_INIT is an empty procedure in the EVE section file. When you add your DECTPU statements and procedures to the EVE section file, your procedure named TPU$LOCAL_INIT supersedes EVE’s original empty value of TPU$LOCAL_INIT. TPU$LOCAL_INIT is called at the end of the procedure TPU$INIT_ PROCEDURE during the initialization sequence. For more information on the initialization sequence, see Section 5.6.4.

If you are extending a non-EVE section file, you must determine whether that section file has implemented the convention of including a TPU$LOCAL_INIT procedure.

After adding DECTPU procedures and statements that implement your application, end your program with the following statements:

•A statement that contains the SAVE built-in procedure. SAVE is the mechanism by which you store all currently defined procedures, variables, and bound keys in binary form.

•The QUIT built-in procedure. QUIT ends the DECTPU session.

For more information on SAVE and QUIT, see the descriptions of these built-ins in the DEC Text Processing Utility Reference Manual.

Example 5–4 shows the syntax of a program that could be used to create a section file.

Example 5–4 Sample Program for a Section File

PROCEDURE tpu$local_init

.

.

.

ENDPROCEDURE;

PROCEDURE vt100_keys

.

.

.

ENDPROCEDURE;

vt100_keys; !Call the procedure that defines the keys

SAVE ("vt100ini.tpusection");

QUIT;

To add your program to an existing section file, invoke DECTPU but do not supply as a parameter the name of a file to be edited. Use the /SECTION qualifier to specify the section file to which you want to add your program. Use the /COMMAND qualifier to specify the file that contains your program.

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Compaq AA-PWCBD-TE manual Extending an Existing Section File, Example 5-4 Sample Program for a Section File
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