1AppConfig(3) User Contributed Perl Documentation AppConfig(3)
2
6 AppConfig - Perl5 module for reading configuration files and parsing
7 command line arguments.
8
10 use AppConfig;
11 # create a new AppConfig object
13 my $config = AppConfig->new( \%cfg );
14 # define a new variable
16 $config->define( $varname => \%varopts );
17 # create/define combined
19 my $config = AppConfig->new( \%cfg,
20 $varname => \%varopts,
21 $varname => \%varopts,
22 ...
23 );
24 # set/get the value
26 $config->set( $varname, $value );
27 $config->get($varname);
28 # shortcut form
30 $config->varname($value);
31 $config->varname;
32 # read configuration file
34 $config->file($file);
35 # parse command line options
37 $config->args(\@args); # default to \@ARGV
38 # advanced command line options with Getopt::Long
40 $config->getopt(\@args); # default to \@ARGV
41 # parse CGI parameters (GET method)
43 $config->cgi($query); # default to $ENV{ QUERY_STRING }
44
46 AppConfig is a Perl5 module for managing application configuration
47 information. It maintains the state of any number of variables and
48 provides methods for parsing configuration files, command line
49 arguments and CGI script parameters.
50 Variables values may be set via configuration files. Variables may be
52 flags (On/Off), take a single value, or take multiple values stored as
53 a list or hash. The number of arguments a variable expects is
54 determined by its configuration when defined.
55 # flags
57 verbose
58 nohelp
59 debug = On
60 # single value
62 home = /home/abw/
63 # multiple list value
65 file = /tmp/file1
66 file = /tmp/file2
67 # multiple hash value
69 book camel = Programming Perl
70 book llama = Learning Perl
71 The '-' prefix can be used to reset a variable to its default value and
73 the '+' prefix can be used to set it to 1
74 -verbose
76 +debug
77 Variable, environment variable and tilde (home directory) expansions
79 can be applied (selectively, if necessary) to the values read from
80 configuration files:
81 home = ~ # home directory
83 nntp = ${NNTPSERVER} # environment variable
84 html = $home/html # internal variables
85 img = $html/images
86 Configuration files may be arranged in blocks as per the style of Win32
88 "INI" files.
89 [file]
91 site = kfs
92 src = ~/websrc/docs/$site
93 lib = ~/websrc/lib
94 dest = ~/public_html/$site
95 [page]
97 header = $lib/header
98 footer = $lib/footer
99 You can also use Perl's "heredoc" syntax to define a large block of
101 text in a configuration file.
102 multiline = <<FOOBAR
104 line 1
105 line 2
106 FOOBAR
107 paths exe = "${PATH}:${HOME}/.bin"
109 paths link = <<'FOO'
110 ${LD_LIBARRAY_PATH}:${HOME}/lib
111 FOO
112 Variables may also be set by parsing command line arguments.
114 myapp -verbose -site kfs -file f1 -file f2
116 AppConfig provides a simple method (args()) for parsing command line
118 arguments. A second method (getopt()) allows more complex argument
119 processing by delegation to Johan Vroman's Getopt::Long module.
120 AppConfig also allows variables to be set by parameters passed to a CGI
122 script via the URL (GET method).
123 http://www.nowhere.com/cgi-bin/myapp?verbose&site=kfs
125
127 AppConfig requires Perl 5.005 or later.
128 The Getopt::Long and Test::More modules should be installed. If you
130 are using a recent version of Perl (e.g. 5.8.0) then these should
131 already be installed.
132
134 The AppConfig module bundle is available from CPAN. As the 'perlmod'
135 manual page explains:
136 CPAN stands for the Comprehensive Perl Archive Network.
138 This is a globally replicated collection of all known Perl
139 materials, including hundreds of unbundled modules.
140 [...]
142 For an up-to-date listing of CPAN sites, see
144 http://www.perl.com/perl/ or ftp://ftp.perl.com/perl/ .
145 Within the CPAN archive, AppConfig is in the category:
147 12) Option, Argument, Parameter and Configuration File Processing
149 The module is available in the following directories:
151 /modules/by-module/AppConfig/AppConfig-<version>.tar.gz
153 /authors/id/ABW/AppConfig-<version>.tar.gz
154 AppConfig is distributed as a single gzipped tar archive file:
156 AppConfig-<version>.tar.gz
158 Note that "<version>" represents the current AppConfig version number,
160 of the form "n.nn", e.g. "3.14". See the REVISION section below to
161 determine the current version number for AppConfig.
162 Unpack the archive to create a AppConfig installation directory:
164 gunzip AppConfig-<version>.tar.gz
166 tar xvf AppConfig-<version>.tar
167 'cd' into that directory, make, test and install the modules:
169 cd AppConfig-<version>
171 perl Makefile.PL
172 make
173 make test
174 make install
175 The 't' sub-directory contains a number of test scripts that are run
177 when a 'make test' is run.
178 The 'make install' will install the module on your system. You may
180 need administrator privileges to perform this task. If you install the
181 module in a local directory (for example, by executing "perl
182 Makefile.PL LIB=~/lib" in the above - see "perldoc MakeMaker" for full
183 details), you will need to ensure that the PERL5LIB environment
184 variable is set to include the location, or add a line to your scripts
185 explicitly naming the library location:
186 use lib '/local/path/to/lib';
188 The 'examples' sub-directory contains some simple examples of using the
190 AppConfig modules.
191
193 USING THE AppConfig MODULE
194 To import and use the AppConfig module the following line should appear
195 in your Perl script:
196 use AppConfig;
198 To import constants defined by the AppConfig module, specify the name
200 of one or more of the constant or tag sets as parameters to "use":
201 use AppConfig qw(:expand :argcount);
203 See "CONSTANT DEFINITIONS" below for more information on the constant
205 tagsets defined by AppConfig.
206 AppConfig is implemented using object-oriented methods. A new
208 AppConfig object is created and initialized using the new() method.
209 This returns a reference to a new AppConfig object.
210 my $config = AppConfig->new();
212 This will create and return a reference to a new AppConfig object.
214 In doing so, the AppConfig object also creates an internal reference to
216 an AppConfig::State object in which to store variable state. All
217 arguments passed into the AppConfig constructor are passed directly to
218 the AppConfig::State constructor.
219 The first (optional) parameter may be a reference to a hash array
221 containing configuration information.
222 my $config = AppConfig->new( {
224 CASE => 1,
225 ERROR => \&my_error,
226 GLOBAL => {
227 DEFAULT => "<unset>",
228 ARGCOUNT => ARGCOUNT_ONE,
229 },
230 } );
231 See AppConfig::State for full details of the configuration options
233 available. These are, in brief:
234 CASE
236 Used to set case sensitivity for variable names (default: off).
237 CREATE
239 Used to indicate that undefined variables should be created
240 automatically (default: off).
241 GLOBAL
243 Reference to a hash array of global values used by default when
244 defining variables. Valid global values are DEFAULT, ARGCOUNT,
245 EXPAND, VALIDATE and ACTION.
246 PEDANTIC
248 Used to indicate that command line and configuration file parsing
249 routines should return immediately on encountering an error.
250 ERROR
252 Used to provide a error handling routine. Arguments as per
253 printf().
254 Subsequent parameters may be variable definitions. These are passed to
256 the define() method, described below in "DEFINING VARIABLES".
257 my $config = AppConfig->new("foo", "bar", "baz");
259 my $config = AppConfig->new( { CASE => 1 }, qw(foo bar baz) );
260 Note that any unresolved method calls to AppConfig are automatically
262 delegated to the AppConfig::State object. In practice, it means that
263 it is possible to treat the AppConfig object as if it were an
264 AppConfig::State object:
265 # create AppConfig
267 my $config = AppConfig->new('foo', 'bar');
268 # methods get passed through to internal AppConfig::State
270 $config->foo(100);
271 $config->set('bar', 200);
272 $config->define('baz');
273 $config->baz(300);
274 DEFINING VARIABLES
276 The define() method (delegated to AppConfig::State) is used to pre-
277 declare a variable and specify its configuration.
278 $config->define("foo");
280 Variables may also be defined directly from the AppConfig new()
282 constructor.
283 my $config = AppConfig->new("foo");
285 In both simple examples above, a new variable called "foo" is defined.
287 A reference to a hash array may also be passed to specify configuration
288 information for the variable:
289 $config->define("foo", {
291 DEFAULT => 99,
292 ALIAS => 'metavar1',
293 });
294 Configuration items specified in the GLOBAL option to the module
296 constructor are applied by default when variables are created. e.g.
297 my $config = AppConfig->new( {
299 GLOBAL => {
300 DEFAULT => "<undef>",
301 ARGCOUNT => ARGCOUNT_ONE,
302 }
303 } );
304 $config->define("foo");
306 $config->define("bar", { ARGCOUNT => ARGCOUNT_NONE } );
307 is equivalent to:
309 my $config = AppConfig->new();
311 $config->define( "foo", {
313 DEFAULT => "<undef>",
314 ARGCOUNT => ARGCOUNT_ONE,
315 } );
316 $config->define( "bar",
318 DEFAULT => "<undef>",
319 ARGCOUNT => ARGCOUNT_NONE,
320 } );
321 Multiple variables may be defined in the same call to define().
323 Configuration hashes for variables can be omitted.
324 $config->define("foo", "bar" => { ALIAS = "boozer" }, "baz");
326 See AppConfig::State for full details of the configuration options
328 available when defining variables. These are, in brief:
329 DEFAULT
331 The default value for the variable (default: undef).
332 ALIAS
334 One or more (list reference or "list|like|this") alternative names
335 for the variable.
336 ARGCOUNT
338 Specifies the number and type of arguments that the variable
339 expects. Constants in ":expand" tag set define ARGCOUNT_NONE -
340 simple on/off flag (default), ARGCOUNT_ONE - single value,
341 ARGCOUNT_LIST - multiple values accessed via list reference,
342 ARGCOUNT_HASH - hash table, "key=value", accessed via hash
343 reference.
344 ARGS
346 Used to provide an argument specification string to pass to
347 Getopt::Long via AppConfig::Getopt. E.g. "=i", ":s", "=s@". This
348 can also be used to implicitly set the ARGCOUNT value ("/^!/" =
349 ARGCOUNT_NONE, "/@/" = ARGCOUNT_LIST, "/%/" = ARGCOUNT_HASH,
350 "/[=:].*/" = ARGCOUNT_ONE)
351 EXPAND
353 Specifies which variable expansion policies should be used when
354 parsing configuration files. Constants in ":expand" tag set
355 define:
356 EXPAND_NONE - no expansion (default)
358 EXPAND_VAR - expand C<$var> or C<$(var)> as other variables
359 EXPAND_UID - expand C<~> and C<~uid> as user's home directory
360 EXPAND_ENV - expand C<${var}> as environment variable
361 EXPAND_ALL - do all expansions.
362 VALIDATE
364 Regex which the intended variable value should match or code
365 reference which returns 1 to indicate successful validation
366 (variable may now be set).
367 ACTION
369 Code reference to be called whenever variable value changes.
370 COMPACT FORMAT DEFINITION
372 Variables can be specified using a compact format. This is identical
373 to the specification format of Getopt::Long and is of the form:
374 "name|alias|alias<argopts>"
376 The first element indicates the variable name and subsequent ALIAS
378 values may be added, each separated by a vertical bar '|'.
379 The <argopts> element indicates the ARGCOUNT value and may be one of
381 the following;
382 ! ARGCOUNT_NONE
384 =s ARGCOUNT_ONE
385 =s@ ARGCOUNT_LIST
386 =s% ARGCOUNT_HASH
387 Additional constructs supported by Getopt::Long may be specified
389 instead of the "=s" element (e.g. "=f"). The entire <argopts> element
390 is stored in the ARGS parameter for the variable and is passed intact
391 to Getopt::Long when the getopt() method is called.
392 The following examples demonstrate use of the compact format, with
394 their equivalent full specifications:
395 $config->define("foo|bar|baz!");
397 $config->define(
399 "foo" => {
400 ALIAS => "bar|baz",
401 ARGCOUNT => ARGCOUNT_NONE,
402 });
403 $config->define("name=s");
405 $config->define(
407 "name" => {
408 ARGCOUNT => ARGCOUNT_ONE,
409 });
410 $config->define("file|filelist|f=s@");
412 $config->define(
414 "file" => {
415 ALIAS => "filelist|f",
416 ARGCOUNT => ARGCOUNT_LIST,
417 });
418 $config->define("user|u=s%");
420 $config->define(
422 "user" => {
423 ALIAS => "u",
424 ARGCOUNT => ARGCOUNT_HASH,
425 });
426 Additional configuration options may be specified by hash reference, as
428 per normal. The compact definition format will override any
429 configuration values provided for ARGS and ARGCOUNT.
430 $config->define("file|filelist|f=s@", { VALIDATE => \&check_file } );
432 READING AND MODIFYING VARIABLE VALUES
434 AppConfig defines two methods (via AppConfig::State) to manipulate
435 variable values
436 set($variable, $value);
438 get($variable);
439 Once defined, variables may be accessed directly as object methods
441 where the method name is the same as the variable name. i.e.
442 $config->set("verbose", 1);
444 is equivalent to
446 $config->verbose(1);
448 Note that AppConfig defines the following methods:
450 new();
452 file();
453 args();
454 getopt();
455 And also, through delegation to AppConfig::State:
457 define()
459 get()
460 set()
461 varlist()
462 If you define a variable with one of the above names, you will not be
464 able to access it directly as an object method. i.e.
465 $config->file();
467 This will call the file() method, instead of returning the value of the
469 'file' variable. You can work around this by explicitly calling get()
470 and set() on a variable whose name conflicts:
471 $config->get('file');
473 or by defining a "safe" alias by which the variable can be accessed:
475 $config->define("file", { ALIAS => "fileopt" });
477 or
478 $config->define("file|fileopt");
479 ...
481 $config->fileopt();
482 Without parameters, the current value of the variable is returned. If
484 a parameter is specified, the variable is set to that value and the
485 result of the set() operation is returned.
486 $config->age(29); # sets 'age' to 29, returns 1 (ok)
488 print $config->age(); # prints "29"
489 The varlist() method can be used to extract a number of variables into
491 a hash array. The first parameter should be a regular expression used
492 for matching against the variable names.
493 my %vars = $config->varlist("^file"); # all "file*" variables
495 A second parameter may be specified (any true value) to indicate that
497 the part of the variable name matching the regex should be removed when
498 copied to the target hash.
499 $config->file_name("/tmp/file");
501 $config->file_path("/foo:/bar:/baz");
502 my %vars = $config->varlist("^file_", 1);
504 # %vars:
506 # name => /tmp/file
507 # path => "/foo:/bar:/baz"
508 READING CONFIGURATION FILES
510 The AppConfig module provides a streamlined interface for reading
511 configuration files with the AppConfig::File module. The file() method
512 automatically loads the AppConfig::File module and creates an object to
513 process the configuration file or files. Variables stored in the
514 internal AppConfig::State are automatically updated with values
515 specified in the configuration file.
516 $config->file($filename);
518 Multiple files may be passed to file() and should indicate the file
520 name or be a reference to an open file handle or glob.
521 $config->file($filename, $filehandle, \*STDIN, ...);
523 The file may contain blank lines and comments (prefixed by '#') which
525 are ignored. Continutation lines may be marked by ending the line with
526 a '\'.
527 # this is a comment
529 callsign = alpha bravo camel delta echo foxtrot golf hipowls \
530 india juliet kilo llama mike november oscar papa \
531 quebec romeo sierra tango umbrella victor whiskey \
532 x-ray yankee zebra
533 Variables that are simple flags and do not expect an argument (ARGCOUNT
535 = ARGCOUNT_NONE) can be specified without any value. They will be set
536 with the value 1, with any value explicitly specified (except "0" and
537 "off") being ignored. The variable may also be specified with a "no"
538 prefix to implicitly set the variable to 0.
539 verbose # on (1)
541 verbose = 1 # on (1)
542 verbose = 0 # off (0)
543 verbose off # off (0)
544 verbose on # on (1)
545 verbose mumble # on (1)
546 noverbose # off (0)
547 Variables that expect an argument (ARGCOUNT = ARGCOUNT_ONE) will be set
549 to whatever follows the variable name, up to the end of the current
550 line (including any continuation lines). An optional equals sign may
551 be inserted between the variable and value for clarity.
552 room = /home/kitchen
554 room /home/bedroom
555 Each subsequent re-definition of the variable value overwrites the
557 previous value.
558 print $config->room(); # prints "/home/bedroom"
560 Variables may be defined to accept multiple values (ARGCOUNT =
562 ARGCOUNT_LIST). Each subsequent definition of the variable adds the
563 value to the list of previously set values for the variable.
564 drink = coffee
566 drink = tea
567 A reference to a list of values is returned when the variable is
569 requested.
570 my $beverages = $config->drink();
572 print join(", ", @$beverages); # prints "coffee, tea"
573 Variables may also be defined as hash lists (ARGCOUNT = ARGCOUNT_HASH).
575 Each subsequent definition creates a new key and value in the hash
576 array.
577 alias l="ls -CF"
579 alias e="emacs"
580 A reference to the hash is returned when the variable is requested.
582 my $aliases = $config->alias();
584 foreach my $k (keys %$aliases) {
585 print "$k => $aliases->{ $k }\n";
586 }
587 The '-' prefix can be used to reset a variable to its default value and
589 the '+' prefix can be used to set it to 1
590 -verbose
592 +debug
593 VARIABLE EXPANSION
595 Variable values may contain references to other AppConfig variables,
596 environment variables and/or users' home directories. These will be
597 expanded depending on the EXPAND value for each variable or the GLOBAL
598 EXPAND value.
599 Three different expansion types may be applied:
601 bin = ~/bin # expand '~' to home dir if EXPAND_UID
603 tmp = ~abw/tmp # as above, but home dir for user 'abw'
604 perl = $bin/perl # expand value of 'bin' variable if EXPAND_VAR
606 ripl = $(bin)/ripl # as above with explicit parens
607 home = ${HOME} # expand HOME environment var if EXPAND_ENV
609 See AppConfig::State for more information on expanding variable values.
611 The configuration files may have variables arranged in blocks. A block
613 header, consisting of the block name in square brackets, introduces a
614 configuration block. The block name and an underscore are then
615 prefixed to the names of all variables subsequently referenced in that
616 block. The block continues until the next block definition or to the
617 end of the current file.
618 [block1]
620 foo = 10 # block1_foo = 10
621 [block2]
623 foo = 20 # block2_foo = 20
624 PARSING COMMAND LINE OPTIONS
626 There are two methods for processing command line options. The first,
627 args(), is a small and efficient implementation which offers basic
628 functionality. The second, getopt(), offers a more powerful and
629 complete facility by delegating the task to Johan Vroman's Getopt::Long
630 module. The trade-off between args() and getopt() is essentially one
631 of speed/size against flexibility. Use as appropriate. Both implement
632 on-demand loading of modules and incur no overhead until used.
633 The args() method is used to parse simple command line options. It
635 automatically loads the AppConfig::Args module and creates an object to
636 process the command line arguments. Variables stored in the internal
637 AppConfig::State are automatically updated with values specified in the
638 arguments.
639 The method should be passed a reference to a list of arguments to
641 parse. The @ARGV array is used if args() is called without parameters.
642 $config->args(\@myargs);
644 $config->args(); # uses @ARGV
645 Arguments are read and shifted from the array until the first is
647 encountered that is not prefixed by '-' or '--'. At that point, the
648 method returns 1 to indicate success, leaving any unprocessed arguments
649 remaining in the list.
650 Each argument should be the name or alias of a variable prefixed by '-'
652 or '--'. Arguments that are not prefixed as such (and are not an
653 additional parameter to a previous argument) will cause a warning to be
654 raised. If the PEDANTIC option is set, the method will return 0
655 immediately. With PEDANTIC unset (default), the method will continue
656 to parse the rest of the arguments, returning 0 when done.
657 If the variable is a simple flag (ARGCOUNT = ARGCOUNT_NONE) then it is
659 set to the value 1. The variable may be prefixed by "no" to set its
660 value to 0.
661 myprog -verbose --debug -notaste # $config->verbose(1)
663 # $config->debug(1)
664 # $config->taste(0)
665 Variables that expect an additional argument (ARGCOUNT != 0) will be
667 set to the value of the argument following it.
668 myprog -f /tmp/myfile # $config->file('/tmp/file');
670 Variables that expect multiple values (ARGCOUNT = ARGCOUNT_LIST or
672 ARGCOUNT_HASH) will have successive values added each time the option
673 is encountered.
674 myprog -file /tmp/foo -file /tmp/bar # $config->file('/tmp/foo')
676 # $config->file('/tmp/bar')
677 # file => [ '/tmp/foo', '/tmp/bar' ]
679 myprog -door "jim=Jim Morrison" -door "ray=Ray Manzarek"
681 # $config->door("jim=Jim Morrison");
682 # $config->door("ray=Ray Manzarek");
683 # door => { 'jim' => 'Jim Morrison', 'ray' => 'Ray Manzarek' }
685 See AppConfig::Args for further details on parsing command line
687 arguments.
688 The getopt() method provides a way to use the power and flexibility of
690 the Getopt::Long module to parse command line arguments and have the
691 internal values of the AppConfig object updates automatically.
692 The first (non-list reference) parameters may contain a number of
694 configuration string to pass to Getopt::Long::Configure. A reference
695 to a list of arguments may additionally be passed or @ARGV is used by
696 default.
697 $config->getopt(); # uses @ARGV
699 $config->getopt(\@myargs);
700 $config->getopt(qw(auto_abbrev debug)); # uses @ARGV
701 $config->getopt(qw(debug), \@myargs);
702 See Getopt::Long for details of the configuration options available.
704 The getopt() method constructs a specification string for each internal
706 variable and then initializes Getopt::Long with these values. The
707 specification string is constructed from the name, any aliases
708 (delimited by a vertical bar '|') and the value of the ARGS parameter.
709 $config->define("foo", {
711 ARGS => "=i",
712 ALIAS => "bar|baz",
713 });
714 # Getopt::Long specification: "foo|bar|baz=i"
716 Errors and warning generated by the Getopt::Long module are trapped and
718 handled by the AppConfig error handler. This may be a user-defined
719 routine installed with the ERROR configuration option.
720 Please note that the AppConfig::Getopt interface is still experimental
722 and may not be 100% operational. This is almost undoubtedly due to
723 problems in AppConfig::Getopt rather than Getopt::Long.
724 PARSING CGI PARAMETERS
726 The cgi() method provides an interface to the AppConfig::CGI module for
727 updating variable values based on the parameters appended to the URL
728 for a CGI script. This is commonly known as the CGI "GET" method. The
729 CGI "POST" method is currently not supported.
730 Parameter definitions are separated from the CGI script name by a
732 question mark and from each other by ampersands. Where variables have
733 specific values, these are appended to the variable with an equals
734 sign:
735 http://www.here.com/cgi-bin/myscript?foo=bar&baz=qux&verbose
737 # $config->foo('bar');
739 # $config->baz('qux');
740 # $config->verbose(1);
741 Certain values specified in a URL must be escaped in the appropriate
743 manner (see CGI specifications at http://www.w3c.org/ for full
744 details). The AppConfig::CGI module automatically unescapes the CGI
745 query string to restore the parameters to their intended values.
746 http://where.com/mycgi?title=%22The+Wrong+Trousers%22
748 # $config->title('"The Wrong Trousers"');
750 Please be considerate of the security implications of providing
752 writable access to script variables via CGI.
753 http://rebel.alliance.com/cgi-bin/...
755 .../send_report?file=%2Fetc%2Fpasswd&email=darth%40empire.com
756 To avoid any accidental or malicious changing of "private" variables,
758 define only the "public" variables before calling the cgi() (or any
759 other) method. Further variables can subsequently be defined which can
760 not be influenced by the CGI parameters.
761 $config->define('verbose', 'debug')
763 $config->cgi(); # can only set verbose and debug
764 $config->define('email', 'file');
766 $config->file($cfgfile); # can set verbose, debug, email + file
767
769 A number of constants are defined by the AppConfig module. These may
770 be accessed directly (e.g. AppConfig::EXPAND_VARS) or by first
771 importing them into the caller's package. Constants are imported by
772 specifying their names as arguments to "use AppConfig" or by importing
773 a set of constants identified by its "tag set" name.
774 use AppConfig qw(ARGCOUNT_NONE ARGCOUNT_ONE);
776 use AppConfig qw(:argcount);
778 The following tag sets are defined:
780 :expand
782 The ':expand' tagset defines the following constants:
783 EXPAND_NONE
785 EXPAND_VAR
786 EXPAND_UID
787 EXPAND_ENV
788 EXPAND_ALL # EXPAND_VAR | EXPAND_UID | EXPAND_ENV
789 EXPAND_WARN
790 See AppConfig::File for full details of the use of these constants.
792 :argcount
794 The ':argcount' tagset defines the following constants:
795 ARGCOUNT_NONE
797 ARGCOUNT_ONE
798 ARGCOUNT_LIST
799 ARGCOUNT_HASH
800 See AppConfig::State for full details of the use of these
802 constants.
803
805 <https://github.com/neilbowers/AppConfig>
806
808 Andy Wardley, <abw@wardley.org>
809 With contributions from Dave Viner, Ijon Tichy, Axel Gerstmair and many
811 others whose names have been lost to the sands of time (reminders
812 welcome).
813
815 Copyright (C) 1997-2007 Andy Wardley. All Rights Reserved.
816 Copyright (C) 1997,1998 Canon Research Centre Europe Ltd.
818 This module is free software; you can redistribute it and/or modify it
820 under the same terms as Perl itself.
821
823 AppConfig::State, AppConfig::File, AppConfig::Args, AppConfig::Getopt,
824 AppConfig::CGI, Getopt::Long
825perl v5.36.0 2023-01-19 AppConfig(3)