Getting Started with DECTPU

2.2 Invoking DECTPU from a DCL Command Procedure

Example 2–1 shows a DCL command procedure that ‘‘remembers’’ the last file that you were editing and uses it as the input file for DECTPU. When you edit a file, the file name you specify is saved in the DCL symbol last_file_edited. If you do not specify a file name when you invoke the editor the next time, the file name from the previous session is used.

Example 2–1 DCL Command Procedure FILENAME.COM

$ IF P1 .NES. "" THEN last_file_edited == P1

$ WRITE SYS$OUTPUT "*** ’’last_file_edited’ ***"

$ DEFINE/USER SYS$INPUT SYS$COMMAND

$ EDIT/TPU/COMMAND=DISK$:[USER]TPU$COMMAND.TPU ’last_file_edited’

Example 2–2 establishes an environment that specifies tab stop settings for FORTRAN programs.

Example 2–2 DCL Command Procedure FORTRAN_TS.COM

$ IF P1 .EQS. "" THEN GOTO REGULAR_INVOKE $ last_file_edited == P1

$ FTN_TEST = F$FILE_ATTRIBUTES (last_file_edited,"RAT")

$ IF FTN_TEST .NES. "FTN" THEN GOTO REGULAR_INVOKE $ FTN_INVOKE:

$

DEFINE/USER SYS$INPUT SYS$COMMAND

$

EDIT/TPU/COMMAND=FTNTABS ’last_file_edited’

$ GOTO TPU_DONE $ REGULAR_INVOKE:

$

DEFINE/USER SYS$INPUT SYS$COMMAND

$

EDIT/TPU/ ’last_file_edited’

$ TPU_DONE:

2.2.2 Creating a Noninteractive Application

In some situations, you may want to put all of your editing commands in a file and have them read from the file rather than entering the commands interactively. You may also want DECTPU to perform the edits without displaying them on the screen. You can do this type of editing from a batch job; or, if you want to see the results of the editing session displayed on your screen, you can do this type of editing from a DCL command procedure. Even though the edits are not displayed on your screen as they are being made, your terminal is not free while the command procedure is executing.

Example 2–3 shows a DCL command procedure named INVISIBLE_TPU.COM, which contains a single command line that uses the following qualifiers to invoke

DECTPU:

•/NOSECTION—This qualifier prevents DECTPU from using a section file. All procedures and key definitions must be specified in a command file.

•/COMMAND=gsr.tpu—This qualifier specifies a command file that contains the code to be executed (GSR.TPU).

•/NODISPLAY—This qualifier suppresses screen display.

2–4Getting Started with DECTPU

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Compaq AA-PWCBD-TE manual Creating a Noninteractive Application, Example 2-1 DCL Command Procedure FILENAME.COM, Dectpu
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