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Tk::CmdLine contains process standard X11 command line options and set initial resources.

SYNOPSIS

Tk::CmdLine::SetArguments([@argument]);

my $value = Tk::CmdLine::cget([$option]);

Tk::CmdLine::SetResources((@resource | $resource) [, $priority]);

Tk::CmdLine::LoadResources(
[ -symbol => $symbol ]
[ -file => $fileSpec ]
[ -priority => $priority ]
[ -echo => $fileHandle ] );

Process standard X11 command line options and set initial resources.

The X11R5 man page for X11 says: "Most X programs attempt to use the same names for command line options and arguments. All applications written with the X Toolkit Intrinsics automatically accept the following options: ...". This module processes these command line options for perl/Tk applications using the SetArguments function.

This module can optionally be used to load initial resources explicitly via function SetResources, or from specified files (default: the standard X11 application-specific resource files) via function LoadResources.

Ctioga is a powerful command-line plotting system, to rapidly make publication quality graphs. Ctioga is based on the wonderful work by Bill Paxton, Tioga.

Ctioga has been designed with ease of use and extensibility in mind. It is based on the powerful Tioga plotting library.

Getopt::ExPar contains extended parameters command line parser.

SYNOPSIS

use Getopt::ExPar;

my(@PDT, @MM, %OPT);
ExPar @PDT, @MM, $OPT;

EXPORT

use Getopt::ExPar exports the sub ExPar into your name space.

ExPar is a perl5 module used to parse command line parameters. This package uses the @PDT, Parameter Description Table, and the @MM, Message Module, to return %OPT which is a hash reference containing the command line option data. The function of Getopt::ExPar is based on Getopt::EvaP, created by Stephen O. Lidie.

Introduction

The ExPar function parses a perl command line. Using the option definitions in the @PDT, argument types are checked and the arguments themselves may be checked against a specified range or pattern. By using both @PDT and @MM, several types of help may be retured to the user. ExPar handles command lines with this format:

command [-parameters] [file_list]

where any parameters and file_list are optional.

Parameter Description Table (PDT) Syntax

Here is the PDT syntax. Optional constructs are enclosed in [], and the | character separates possible values in a list.

PDT [program_name, alias]
[parameter_name[, alias]: type [pattern | range] [ = [default_variable,] default_value]]
PDTEND [flag_list]

flag_list is one or more of the following flags: optional_file_list | required_file_list | no_file_list: specifies condition of list of files at end of command line. (only one of these may be specified) abbreviations: allows for abbreviations of commands or aliases as long as enough of the command is given to make it distinguishable from all others. If not, a message is printed so the user may be more specific. switchglomming: allows for multiple single-letter switch options to be specified as single option (must be first option). pdt_warnings: for debugging a @PDT, it prints out messages that are not necessarily errors, like inconsistent number of default values in a list, etc.
The default_variable is an environment variable - see the section Usage Notes for complete details.

So, the simplest possible PDT would be:

PDT
PDTEND

This PDT would simply define a -help switch for the command, but is rather useless.

A typical PDT would look more like this:

PDT frog
number, n: integer = 1
chars, c: string = "default_string"
PDTEND no_file_list

This PDT, for command frog, defines two parameters, number (or n), of type integer with a default value of 1, and chars (or c), of type string with a default value of "default_string". The PDTEND no_file_list indicator indicates that no trailing file_list can appear on the command line. Of course, the -help switch is defined automatically.

Each of these options may be further refined by using a range and a pattern, respectively:

PDT frog
number, n: integer (((#100, the # is implied. Other simple conditions are < and == (a single = is accepted as ==, not an assignment). Ex: This condition: (#>10, #<<less