HP TACL User Manual

Processing Arguments
Developing TACL Routines
107365 Tandem Computers Incorporated 3–5
To process several types of arguments entered in any order, use a #CASE statement.
Use the routine in Figure 3-1 to process zero or more of the following:
File attribute names (defined in ALL)
Numbers
Figure 3-1. Processing Arguments
?SECTION mult_args ROUTINE
#FRAME
#PUSH stat count end
#SET count 0
#SET end 0
[#DEF attributes TEXT |BODY|
Type Size Age Owner Security
]
#OUTPUT Entered arguments were: [#REST]
[#LOOP |DO|
#SET count [#COMPUTE [count] + 1]
[#CASE [#ARGUMENT/VALUE stat/
KEYWORD/WORDLIST [attributes]/ NUMBER END OTHERWISE]
|1|
#OUTPUT Argument [count] is the keyword [stat].
|2|
#OUTPUT Argument [count] is the number [stat].
|3|
#SET end 1
|4|
#OUTPUT *** Invalid argument ***
#SET end 1
]
|UNTIL| (NOT [#MORE]) OR end
]
#UNFRAME
Using #ARGUMENT for Data Within a Program
TACL itself does not provide data type declarations and functions, but you can write a
function that uses #ARGUMENT to determine the type and return the information.
The following routine returns TRUE (not zero) if you pass it a number; otherwise, it
returns FALSE:
?SECTION anumber ROUTINE
#RESULT [#COMPUTE NOT ([#ARGUMENT NUMBER OTHERWISE] - 1)]
Variations on this routine could return TRUE for text or special characters, a number
that reflects a group of argument types, or an index into the entire set of
#ARGUMENT alternatives.

HP TACL Specifications

General

Name	HP TACL
Purpose	Task automation, system management, and application control
Category	Software
Platform	HP NonStop
Type	Scripting language
Developer	Hewlett-Packard

Summary

Section 1 An Overview of TACL

Running the Examples in This Manual

Instructions for executing manual examples, including setting required variables.

About This Manual

Section 2 Developing TACL Programs

Processing Character Data

Covers tasks like constructing text strings, analyzing output, and manipulating characters.

Debugging TACL Programs

Introduces the TACL debugger for step-by-step execution and variable examination.

Section 3 Developing TACL Routines

Processing Arguments

Details how routines handle arguments using #ARGUMENT, including options and alternatives.

Writing an Exception Handler

Explains handling events like BREAK keys or TACL errors using exception handlers.

4 Accessing Files

#REQUESTER Operation

Describes the #REQUESTER function for opening files and initiating I/O operations.

Requesting Waited Reads

Explains opening files for waited read operations using #REQUESTER.

5 Initiating and Communicating With Processes

Initiating a Process: RUN and #NEWPROCESS

Covers starting processes using RUN and #NEWPROCESS, including startup options.

Using the INLINE Facility

Using INV and OUTV

Using $RECEIVE

Using #SERVER

6 Running TACL as a Server

Running a TACL Process as a Server

Explains making a TACL process a server by establishing its IN file as $RECEIVE.

Running TACL Code as a Server

Details providing TACL code for a TACL-server process using #INPUTV and #REPLYV.

Using TACL as a Pathway Server

Describes creating a Pathway environment with TCP and TACL servers to process requests.

7 Using Programmatic Interfaces

Overview of SPI and EMS

Using SPI

Using EMS

8 Example of a System Management Program

Monitoring System Operation