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- # Getopt::Long.pm -- Universal options parsing
-
- package Getopt::Long;
-
- # RCS Status : $Id: GetoptLong.pm,v 2.72 2005-04-28 21:18:33+02 jv Exp $
- # Author : Johan Vromans
- # Created On : Tue Sep 11 15:00:12 1990
- # Last Modified By: Johan Vromans
- # Last Modified On: Wed Dec 14 21:17:21 2005
- # Update Count : 1458
- # Status : Released
-
- ################ Copyright ################
-
- # This program is Copyright 1990,2005 by Johan Vromans.
- # This program is free software; you can redistribute it and/or
- # modify it under the terms of the Perl Artistic License or the
- # GNU General Public License as published by the Free Software
- # Foundation; either version 2 of the License, or (at your option) any
- # later version.
- #
- # This program is distributed in the hope that it will be useful,
- # but WITHOUT ANY WARRANTY; without even the implied warranty of
- # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- # GNU General Public License for more details.
- #
- # If you do not have a copy of the GNU General Public License write to
- # the Free Software Foundation, Inc., 675 Mass Ave, Cambridge,
- # MA 02139, USA.
-
- ################ Module Preamble ################
-
- use 5.004;
-
- use strict;
-
- use vars qw($VERSION);
- $VERSION = 2.35;
- # For testing versions only.
- #use vars qw($VERSION_STRING);
- #$VERSION_STRING = "2.35";
-
- use Exporter;
- use vars qw(@ISA @EXPORT @EXPORT_OK);
- @ISA = qw(Exporter);
-
- # Exported subroutines.
- sub GetOptions(@); # always
- sub Configure(@); # on demand
- sub HelpMessage(@); # on demand
- sub VersionMessage(@); # in demand
-
- BEGIN {
- # Init immediately so their contents can be used in the 'use vars' below.
- @EXPORT = qw(&GetOptions $REQUIRE_ORDER $PERMUTE $RETURN_IN_ORDER);
- @EXPORT_OK = qw(&HelpMessage &VersionMessage &Configure);
- }
-
- # User visible variables.
- use vars @EXPORT, @EXPORT_OK;
- use vars qw($error $debug $major_version $minor_version);
- # Deprecated visible variables.
- use vars qw($autoabbrev $getopt_compat $ignorecase $bundling $order
- $passthrough);
- # Official invisible variables.
- use vars qw($genprefix $caller $gnu_compat $auto_help $auto_version $longprefix);
-
- # Public subroutines.
- sub config(@); # deprecated name
-
- # Private subroutines.
- sub ConfigDefaults();
- sub ParseOptionSpec($$);
- sub OptCtl($);
- sub FindOption($$$$);
- sub ValidValue ($$$$$);
-
- ################ Local Variables ################
-
- # $requested_version holds the version that was mentioned in the 'use'
- # or 'require', if any. It can be used to enable or disable specific
- # features.
- my $requested_version = 0;
-
- ################ Resident subroutines ################
-
- sub ConfigDefaults() {
- # Handle POSIX compliancy.
- if ( defined $ENV{"POSIXLY_CORRECT"} ) {
- $genprefix = "(--|-)";
- $autoabbrev = 0; # no automatic abbrev of options
- $bundling = 0; # no bundling of single letter switches
- $getopt_compat = 0; # disallow '+' to start options
- $order = $REQUIRE_ORDER;
- }
- else {
- $genprefix = "(--|-|\\+)";
- $autoabbrev = 1; # automatic abbrev of options
- $bundling = 0; # bundling off by default
- $getopt_compat = 1; # allow '+' to start options
- $order = $PERMUTE;
- }
- # Other configurable settings.
- $debug = 0; # for debugging
- $error = 0; # error tally
- $ignorecase = 1; # ignore case when matching options
- $passthrough = 0; # leave unrecognized options alone
- $gnu_compat = 0; # require --opt=val if value is optional
- $longprefix = "(--)"; # what does a long prefix look like
- }
-
- # Override import.
- sub import {
- my $pkg = shift; # package
- my @syms = (); # symbols to import
- my @config = (); # configuration
- my $dest = \@syms; # symbols first
- for ( @_ ) {
- if ( $_ eq ':config' ) {
- $dest = \@config; # config next
- next;
- }
- push(@$dest, $_); # push
- }
- # Hide one level and call super.
- local $Exporter::ExportLevel = 1;
- push(@syms, qw(&GetOptions)) if @syms; # always export GetOptions
- $pkg->SUPER::import(@syms);
- # And configure.
- Configure(@config) if @config;
- }
-
- ################ Initialization ################
-
- # Values for $order. See GNU getopt.c for details.
- ($REQUIRE_ORDER, $PERMUTE, $RETURN_IN_ORDER) = (0..2);
- # Version major/minor numbers.
- ($major_version, $minor_version) = $VERSION =~ /^(\d+)\.(\d+)/;
-
- ConfigDefaults();
-
- ################ OO Interface ################
-
- package Getopt::Long::Parser;
-
- # Store a copy of the default configuration. Since ConfigDefaults has
- # just been called, what we get from Configure is the default.
- my $default_config = do {
- Getopt::Long::Configure ()
- };
-
- sub new {
- my $that = shift;
- my $class = ref($that) || $that;
- my %atts = @_;
-
- # Register the callers package.
- my $self = { caller_pkg => (caller)[0] };
-
- bless ($self, $class);
-
- # Process config attributes.
- if ( defined $atts{config} ) {
- my $save = Getopt::Long::Configure ($default_config, @{$atts{config}});
- $self->{settings} = Getopt::Long::Configure ($save);
- delete ($atts{config});
- }
- # Else use default config.
- else {
- $self->{settings} = $default_config;
- }
-
- if ( %atts ) { # Oops
- die(__PACKAGE__.": unhandled attributes: ".
- join(" ", sort(keys(%atts)))."\n");
- }
-
- $self;
- }
-
- sub configure {
- my ($self) = shift;
-
- # Restore settings, merge new settings in.
- my $save = Getopt::Long::Configure ($self->{settings}, @_);
-
- # Restore orig config and save the new config.
- $self->{settings} = Getopt::Long::Configure ($save);
- }
-
- sub getoptions {
- my ($self) = shift;
-
- # Restore config settings.
- my $save = Getopt::Long::Configure ($self->{settings});
-
- # Call main routine.
- my $ret = 0;
- $Getopt::Long::caller = $self->{caller_pkg};
-
- eval {
- # Locally set exception handler to default, otherwise it will
- # be called implicitly here, and again explicitly when we try
- # to deliver the messages.
- local ($SIG{__DIE__}) = '__DEFAULT__';
- $ret = Getopt::Long::GetOptions (@_);
- };
-
- # Restore saved settings.
- Getopt::Long::Configure ($save);
-
- # Handle errors and return value.
- die ($@) if $@;
- return $ret;
- }
-
- package Getopt::Long;
-
- ################ Back to Normal ################
-
- # Indices in option control info.
- # Note that ParseOptions uses the fields directly. Search for 'hard-wired'.
- use constant CTL_TYPE => 0;
- #use constant CTL_TYPE_FLAG => '';
- #use constant CTL_TYPE_NEG => '!';
- #use constant CTL_TYPE_INCR => '+';
- #use constant CTL_TYPE_INT => 'i';
- #use constant CTL_TYPE_INTINC => 'I';
- #use constant CTL_TYPE_XINT => 'o';
- #use constant CTL_TYPE_FLOAT => 'f';
- #use constant CTL_TYPE_STRING => 's';
-
- use constant CTL_CNAME => 1;
-
- use constant CTL_DEFAULT => 2;
-
- use constant CTL_DEST => 3;
- use constant CTL_DEST_SCALAR => 0;
- use constant CTL_DEST_ARRAY => 1;
- use constant CTL_DEST_HASH => 2;
- use constant CTL_DEST_CODE => 3;
-
- use constant CTL_AMIN => 4;
- use constant CTL_AMAX => 5;
-
- # FFU.
- #use constant CTL_RANGE => ;
- #use constant CTL_REPEAT => ;
-
- sub GetOptions(@) {
-
- my @optionlist = @_; # local copy of the option descriptions
- my $argend = '--'; # option list terminator
- my %opctl = (); # table of option specs
- my $pkg = $caller || (caller)[0]; # current context
- # Needed if linkage is omitted.
- my @ret = (); # accum for non-options
- my %linkage; # linkage
- my $userlinkage; # user supplied HASH
- my $opt; # current option
- my $prefix = $genprefix; # current prefix
-
- $error = '';
-
- if ( $debug ) {
- # Avoid some warnings if debugging.
- local ($^W) = 0;
- print STDERR
- ("Getopt::Long $Getopt::Long::VERSION (",
- '$Revision: 2.72 $', ") ",
- "called from package \"$pkg\".",
- "\n ",
- "ARGV: (@ARGV)",
- "\n ",
- "autoabbrev=$autoabbrev,".
- "bundling=$bundling,",
- "getopt_compat=$getopt_compat,",
- "gnu_compat=$gnu_compat,",
- "order=$order,",
- "\n ",
- "ignorecase=$ignorecase,",
- "requested_version=$requested_version,",
- "passthrough=$passthrough,",
- "genprefix=\"$genprefix\",",
- "longprefix=\"$longprefix\".",
- "\n");
- }
-
- # Check for ref HASH as first argument.
- # First argument may be an object. It's OK to use this as long
- # as it is really a hash underneath.
- $userlinkage = undef;
- if ( @optionlist && ref($optionlist[0]) and
- UNIVERSAL::isa($optionlist[0],'HASH') ) {
- $userlinkage = shift (@optionlist);
- print STDERR ("=> user linkage: $userlinkage\n") if $debug;
- }
-
- # See if the first element of the optionlist contains option
- # starter characters.
- # Be careful not to interpret '<>' as option starters.
- if ( @optionlist && $optionlist[0] =~ /^\W+$/
- && !($optionlist[0] eq '<>'
- && @optionlist > 0
- && ref($optionlist[1])) ) {
- $prefix = shift (@optionlist);
- # Turn into regexp. Needs to be parenthesized!
- $prefix =~ s/(\W)/\\$1/g;
- $prefix = "([" . $prefix . "])";
- print STDERR ("=> prefix=\"$prefix\"\n") if $debug;
- }
-
- # Verify correctness of optionlist.
- %opctl = ();
- while ( @optionlist ) {
- my $opt = shift (@optionlist);
-
- unless ( defined($opt) ) {
- $error .= "Undefined argument in option spec\n";
- next;
- }
-
- # Strip leading prefix so people can specify "--foo=i" if they like.
- $opt = $+ if $opt =~ /^$prefix+(.*)$/s;
-
- if ( $opt eq '<>' ) {
- if ( (defined $userlinkage)
- && !(@optionlist > 0 && ref($optionlist[0]))
- && (exists $userlinkage->{$opt})
- && ref($userlinkage->{$opt}) ) {
- unshift (@optionlist, $userlinkage->{$opt});
- }
- unless ( @optionlist > 0
- && ref($optionlist[0]) && ref($optionlist[0]) eq 'CODE' ) {
- $error .= "Option spec <> requires a reference to a subroutine\n";
- # Kill the linkage (to avoid another error).
- shift (@optionlist)
- if @optionlist && ref($optionlist[0]);
- next;
- }
- $linkage{'<>'} = shift (@optionlist);
- next;
- }
-
- # Parse option spec.
- my ($name, $orig) = ParseOptionSpec ($opt, \%opctl);
- unless ( defined $name ) {
- # Failed. $orig contains the error message. Sorry for the abuse.
- $error .= $orig;
- # Kill the linkage (to avoid another error).
- shift (@optionlist)
- if @optionlist && ref($optionlist[0]);
- next;
- }
-
- # If no linkage is supplied in the @optionlist, copy it from
- # the userlinkage if available.
- if ( defined $userlinkage ) {
- unless ( @optionlist > 0 && ref($optionlist[0]) ) {
- if ( exists $userlinkage->{$orig} &&
- ref($userlinkage->{$orig}) ) {
- print STDERR ("=> found userlinkage for \"$orig\": ",
- "$userlinkage->{$orig}\n")
- if $debug;
- unshift (@optionlist, $userlinkage->{$orig});
- }
- else {
- # Do nothing. Being undefined will be handled later.
- next;
- }
- }
- }
-
- # Copy the linkage. If omitted, link to global variable.
- if ( @optionlist > 0 && ref($optionlist[0]) ) {
- print STDERR ("=> link \"$orig\" to $optionlist[0]\n")
- if $debug;
- my $rl = ref($linkage{$orig} = shift (@optionlist));
-
- if ( $rl eq "ARRAY" ) {
- $opctl{$name}[CTL_DEST] = CTL_DEST_ARRAY;
- }
- elsif ( $rl eq "HASH" ) {
- $opctl{$name}[CTL_DEST] = CTL_DEST_HASH;
- }
- elsif ( $rl eq "SCALAR" ) {
- # if ( $opctl{$name}[CTL_DEST] == CTL_DEST_ARRAY ) {
- # my $t = $linkage{$orig};
- # $$t = $linkage{$orig} = [];
- # }
- # elsif ( $opctl{$name}[CTL_DEST] == CTL_DEST_HASH ) {
- # }
- # else {
- # Ok.
- # }
- }
- elsif ( $rl eq "CODE" ) {
- # Ok.
- }
- else {
- $error .= "Invalid option linkage for \"$opt\"\n";
- }
- }
- else {
- # Link to global $opt_XXX variable.
- # Make sure a valid perl identifier results.
- my $ov = $orig;
- $ov =~ s/\W/_/g;
- if ( $opctl{$name}[CTL_DEST] == CTL_DEST_ARRAY ) {
- print STDERR ("=> link \"$orig\" to \@$pkg","::opt_$ov\n")
- if $debug;
- eval ("\$linkage{\$orig} = \\\@".$pkg."::opt_$ov;");
- }
- elsif ( $opctl{$name}[CTL_DEST] == CTL_DEST_HASH ) {
- print STDERR ("=> link \"$orig\" to \%$pkg","::opt_$ov\n")
- if $debug;
- eval ("\$linkage{\$orig} = \\\%".$pkg."::opt_$ov;");
- }
- else {
- print STDERR ("=> link \"$orig\" to \$$pkg","::opt_$ov\n")
- if $debug;
- eval ("\$linkage{\$orig} = \\\$".$pkg."::opt_$ov;");
- }
- }
- }
-
- # Bail out if errors found.
- die ($error) if $error;
- $error = 0;
-
- # Supply --version and --help support, if needed and allowed.
- if ( defined($auto_version) ? $auto_version : ($requested_version >= 2.3203) ) {
- if ( !defined($opctl{version}) ) {
- $opctl{version} = ['','version',0,CTL_DEST_CODE,undef];
- $linkage{version} = \&VersionMessage;
- }
- $auto_version = 1;
- }
- if ( defined($auto_help) ? $auto_help : ($requested_version >= 2.3203) ) {
- if ( !defined($opctl{help}) && !defined($opctl{'?'}) ) {
- $opctl{help} = $opctl{'?'} = ['','help',0,CTL_DEST_CODE,undef];
- $linkage{help} = \&HelpMessage;
- }
- $auto_help = 1;
- }
-
- # Show the options tables if debugging.
- if ( $debug ) {
- my ($arrow, $k, $v);
- $arrow = "=> ";
- while ( ($k,$v) = each(%opctl) ) {
- print STDERR ($arrow, "\$opctl{$k} = $v ", OptCtl($v), "\n");
- $arrow = " ";
- }
- }
-
- # Process argument list
- my $goon = 1;
- while ( $goon && @ARGV > 0 ) {
-
- # Get next argument.
- $opt = shift (@ARGV);
- print STDERR ("=> arg \"", $opt, "\"\n") if $debug;
-
- # Double dash is option list terminator.
- if ( $opt eq $argend ) {
- push (@ret, $argend) if $passthrough;
- last;
- }
-
- # Look it up.
- my $tryopt = $opt;
- my $found; # success status
- my $key; # key (if hash type)
- my $arg; # option argument
- my $ctl; # the opctl entry
-
- ($found, $opt, $ctl, $arg, $key) =
- FindOption ($prefix, $argend, $opt, \%opctl);
-
- if ( $found ) {
-
- # FindOption undefines $opt in case of errors.
- next unless defined $opt;
-
- my $argcnt = 0;
- while ( defined $arg ) {
-
- # Get the canonical name.
- print STDERR ("=> cname for \"$opt\" is ") if $debug;
- $opt = $ctl->[CTL_CNAME];
- print STDERR ("\"$ctl->[CTL_CNAME]\"\n") if $debug;
-
- if ( defined $linkage{$opt} ) {
- print STDERR ("=> ref(\$L{$opt}) -> ",
- ref($linkage{$opt}), "\n") if $debug;
-
- if ( ref($linkage{$opt}) eq 'SCALAR' ) {
- if ( $ctl->[CTL_TYPE] eq '+' ) {
- print STDERR ("=> \$\$L{$opt} += \"$arg\"\n")
- if $debug;
- if ( defined ${$linkage{$opt}} ) {
- ${$linkage{$opt}} += $arg;
- }
- else {
- ${$linkage{$opt}} = $arg;
- }
- }
- elsif ( $ctl->[CTL_DEST] == CTL_DEST_ARRAY ) {
- print STDERR ("=> ref(\$L{$opt}) auto-vivified",
- " to ARRAY\n")
- if $debug;
- my $t = $linkage{$opt};
- $$t = $linkage{$opt} = [];
- print STDERR ("=> push(\@{\$L{$opt}, \"$arg\")\n")
- if $debug;
- push (@{$linkage{$opt}}, $arg);
- }
- elsif ( $ctl->[CTL_DEST] == CTL_DEST_HASH ) {
- print STDERR ("=> ref(\$L{$opt}) auto-vivified",
- " to HASH\n")
- if $debug;
- my $t = $linkage{$opt};
- $$t = $linkage{$opt} = {};
- print STDERR ("=> \$\$L{$opt}->{$key} = \"$arg\"\n")
- if $debug;
- $linkage{$opt}->{$key} = $arg;
- }
- else {
- print STDERR ("=> \$\$L{$opt} = \"$arg\"\n")
- if $debug;
- ${$linkage{$opt}} = $arg;
- }
- }
- elsif ( ref($linkage{$opt}) eq 'ARRAY' ) {
- print STDERR ("=> push(\@{\$L{$opt}, \"$arg\")\n")
- if $debug;
- push (@{$linkage{$opt}}, $arg);
- }
- elsif ( ref($linkage{$opt}) eq 'HASH' ) {
- print STDERR ("=> \$\$L{$opt}->{$key} = \"$arg\"\n")
- if $debug;
- $linkage{$opt}->{$key} = $arg;
- }
- elsif ( ref($linkage{$opt}) eq 'CODE' ) {
- print STDERR ("=> &L{$opt}(\"$opt\"",
- $ctl->[CTL_DEST] == CTL_DEST_HASH ? ", \"$key\"" : "",
- ", \"$arg\")\n")
- if $debug;
- my $eval_error = do {
- local $@;
- local $SIG{__DIE__} = '__DEFAULT__';
- eval {
- &{$linkage{$opt}}($opt,
- $ctl->[CTL_DEST] == CTL_DEST_HASH ? ($key) : (),
- $arg);
- };
- $@;
- };
- print STDERR ("=> die($eval_error)\n")
- if $debug && $eval_error ne '';
- if ( $eval_error =~ /^!/ ) {
- if ( $eval_error =~ /^!FINISH\b/ ) {
- $goon = 0;
- }
- }
- elsif ( $eval_error ne '' ) {
- warn ($eval_error);
- $error++;
- }
- }
- else {
- print STDERR ("Invalid REF type \"", ref($linkage{$opt}),
- "\" in linkage\n");
- die("Getopt::Long -- internal error!\n");
- }
- }
- # No entry in linkage means entry in userlinkage.
- elsif ( $ctl->[CTL_DEST] == CTL_DEST_ARRAY ) {
- if ( defined $userlinkage->{$opt} ) {
- print STDERR ("=> push(\@{\$L{$opt}}, \"$arg\")\n")
- if $debug;
- push (@{$userlinkage->{$opt}}, $arg);
- }
- else {
- print STDERR ("=>\$L{$opt} = [\"$arg\"]\n")
- if $debug;
- $userlinkage->{$opt} = [$arg];
- }
- }
- elsif ( $ctl->[CTL_DEST] == CTL_DEST_HASH ) {
- if ( defined $userlinkage->{$opt} ) {
- print STDERR ("=> \$L{$opt}->{$key} = \"$arg\"\n")
- if $debug;
- $userlinkage->{$opt}->{$key} = $arg;
- }
- else {
- print STDERR ("=>\$L{$opt} = {$key => \"$arg\"}\n")
- if $debug;
- $userlinkage->{$opt} = {$key => $arg};
- }
- }
- else {
- if ( $ctl->[CTL_TYPE] eq '+' ) {
- print STDERR ("=> \$L{$opt} += \"$arg\"\n")
- if $debug;
- if ( defined $userlinkage->{$opt} ) {
- $userlinkage->{$opt} += $arg;
- }
- else {
- $userlinkage->{$opt} = $arg;
- }
- }
- else {
- print STDERR ("=>\$L{$opt} = \"$arg\"\n") if $debug;
- $userlinkage->{$opt} = $arg;
- }
- }
-
- $argcnt++;
- last if $argcnt >= $ctl->[CTL_AMAX] && $ctl->[CTL_AMAX] != -1;
- undef($arg);
-
- # Need more args?
- if ( $argcnt < $ctl->[CTL_AMIN] ) {
- if ( @ARGV ) {
- if ( ValidValue($ctl, $ARGV[0], 1, $argend, $prefix) ) {
- $arg = shift(@ARGV);
- ($key,$arg) = $arg =~ /^([^=]+)=(.*)/
- if $ctl->[CTL_DEST] == CTL_DEST_HASH;
- next;
- }
- warn("Value \"$ARGV[0]\" invalid for option $opt\n");
- $error++;
- }
- else {
- warn("Insufficient arguments for option $opt\n");
- $error++;
- }
- }
-
- # Any more args?
- if ( @ARGV && ValidValue($ctl, $ARGV[0], 0, $argend, $prefix) ) {
- $arg = shift(@ARGV);
- ($key,$arg) = $arg =~ /^([^=]+)=(.*)/
- if $ctl->[CTL_DEST] == CTL_DEST_HASH;
- next;
- }
- }
- }
-
- # Not an option. Save it if we $PERMUTE and don't have a <>.
- elsif ( $order == $PERMUTE ) {
- # Try non-options call-back.
- my $cb;
- if ( (defined ($cb = $linkage{'<>'})) ) {
- print STDERR ("=> &L{$tryopt}(\"$tryopt\")\n")
- if $debug;
- my $eval_error = do {
- local $@;
- local $SIG{__DIE__} = '__DEFAULT__';
- eval { &$cb ($tryopt) };
- $@;
- };
- print STDERR ("=> die($eval_error)\n")
- if $debug && $eval_error ne '';
- if ( $eval_error =~ /^!/ ) {
- if ( $eval_error =~ /^!FINISH\b/ ) {
- $goon = 0;
- }
- }
- elsif ( $eval_error ne '' ) {
- warn ($eval_error);
- $error++;
- }
- }
- else {
- print STDERR ("=> saving \"$tryopt\" ",
- "(not an option, may permute)\n") if $debug;
- push (@ret, $tryopt);
- }
- next;
- }
-
- # ...otherwise, terminate.
- else {
- # Push this one back and exit.
- unshift (@ARGV, $tryopt);
- return ($error == 0);
- }
-
- }
-
- # Finish.
- if ( @ret && $order == $PERMUTE ) {
- # Push back accumulated arguments
- print STDERR ("=> restoring \"", join('" "', @ret), "\"\n")
- if $debug;
- unshift (@ARGV, @ret);
- }
-
- return ($error == 0);
- }
-
- # A readable representation of what's in an optbl.
- sub OptCtl ($) {
- my ($v) = @_;
- my @v = map { defined($_) ? ($_) : ("<undef>") } @$v;
- "[".
- join(",",
- "\"$v[CTL_TYPE]\"",
- "\"$v[CTL_CNAME]\"",
- "\"$v[CTL_DEFAULT]\"",
- ("\$","\@","\%","\&")[$v[CTL_DEST] || 0],
- $v[CTL_AMIN] || '',
- $v[CTL_AMAX] || '',
- # $v[CTL_RANGE] || '',
- # $v[CTL_REPEAT] || '',
- ). "]";
- }
-
- # Parse an option specification and fill the tables.
- sub ParseOptionSpec ($$) {
- my ($opt, $opctl) = @_;
-
- # Match option spec.
- if ( $opt !~ m;^
- (
- # Option name
- (?: \w+[-\w]* )
- # Alias names, or "?"
- (?: \| (?: \? | \w[-\w]* )? )*
- )?
- (
- # Either modifiers ...
- [!+]
- |
- # ... or a value/dest/repeat specification
- [=:] [ionfs] [@%]? (?: \{\d*,?\d*\} )?
- |
- # ... or an optional-with-default spec
- : (?: -?\d+ | \+ ) [@%]?
- )?
- $;x ) {
- return (undef, "Error in option spec: \"$opt\"\n");
- }
-
- my ($names, $spec) = ($1, $2);
- $spec = '' unless defined $spec;
-
- # $orig keeps track of the primary name the user specified.
- # This name will be used for the internal or external linkage.
- # In other words, if the user specifies "FoO|BaR", it will
- # match any case combinations of 'foo' and 'bar', but if a global
- # variable needs to be set, it will be $opt_FoO in the exact case
- # as specified.
- my $orig;
-
- my @names;
- if ( defined $names ) {
- @names = split (/\|/, $names);
- $orig = $names[0];
- }
- else {
- @names = ('');
- $orig = '';
- }
-
- # Construct the opctl entries.
- my $entry;
- if ( $spec eq '' || $spec eq '+' || $spec eq '!' ) {
- # Fields are hard-wired here.
- $entry = [$spec,$orig,undef,CTL_DEST_SCALAR,0,0];
- }
- elsif ( $spec =~ /^:(-?\d+|\+)([@%])?$/ ) {
- my $def = $1;
- my $dest = $2;
- my $type = $def eq '+' ? 'I' : 'i';
- $dest ||= '$';
- $dest = $dest eq '@' ? CTL_DEST_ARRAY
- : $dest eq '%' ? CTL_DEST_HASH : CTL_DEST_SCALAR;
- # Fields are hard-wired here.
- $entry = [$type,$orig,$def eq '+' ? undef : $def,
- $dest,0,1];
- }
- else {
- my ($mand, $type, $dest) =
- $spec =~ /^([=:])([ionfs])([@%])?(\{(\d+)?(,)?(\d+)?\})?$/;
- return (undef, "Cannot repeat while bundling: \"$opt\"\n")
- if $bundling && defined($4);
- my ($mi, $cm, $ma) = ($5, $6, $7);
- return (undef, "{0} is useless in option spec: \"$opt\"\n")
- if defined($mi) && !$mi && !defined($ma) && !defined($cm);
-
- $type = 'i' if $type eq 'n';
- $dest ||= '$';
- $dest = $dest eq '@' ? CTL_DEST_ARRAY
- : $dest eq '%' ? CTL_DEST_HASH : CTL_DEST_SCALAR;
- # Default minargs to 1/0 depending on mand status.
- $mi = $mand eq '=' ? 1 : 0 unless defined $mi;
- # Adjust mand status according to minargs.
- $mand = $mi ? '=' : ':';
- # Adjust maxargs.
- $ma = $mi ? $mi : 1 unless defined $ma || defined $cm;
- return (undef, "Max must be greater than zero in option spec: \"$opt\"\n")
- if defined($ma) && !$ma;
- return (undef, "Max less than min in option spec: \"$opt\"\n")
- if defined($ma) && $ma < $mi;
-
- # Fields are hard-wired here.
- $entry = [$type,$orig,undef,$dest,$mi,$ma||-1];
- }
-
- # Process all names. First is canonical, the rest are aliases.
- my $dups = '';
- foreach ( @names ) {
-
- $_ = lc ($_)
- if $ignorecase > (($bundling && length($_) == 1) ? 1 : 0);
-
- if ( exists $opctl->{$_} ) {
- $dups .= "Duplicate specification \"$opt\" for option \"$_\"\n";
- }
-
- if ( $spec eq '!' ) {
- $opctl->{"no$_"} = $entry;
- $opctl->{"no-$_"} = $entry;
- $opctl->{$_} = [@$entry];
- $opctl->{$_}->[CTL_TYPE] = '';
- }
- else {
- $opctl->{$_} = $entry;
- }
- }
-
- if ( $dups && $^W ) {
- foreach ( split(/\n+/, $dups) ) {
- warn($_."\n");
- }
- }
- ($names[0], $orig);
- }
-
- # Option lookup.
- sub FindOption ($$$$) {
-
- # returns (1, $opt, $ctl, $arg, $key) if okay,
- # returns (1, undef) if option in error,
- # returns (0) otherwise.
-
- my ($prefix, $argend, $opt, $opctl) = @_;
-
- print STDERR ("=> find \"$opt\"\n") if $debug;
-
- return (0) unless $opt =~ /^$prefix(.*)$/s;
- return (0) if $opt eq "-" && !defined $opctl->{''};
-
- $opt = $+;
- my $starter = $1;
-
- print STDERR ("=> split \"$starter\"+\"$opt\"\n") if $debug;
-
- my $optarg; # value supplied with --opt=value
- my $rest; # remainder from unbundling
-
- # If it is a long option, it may include the value.
- # With getopt_compat, only if not bundling.
- if ( ($starter=~/^$longprefix$/
- || ($getopt_compat && ($bundling == 0 || $bundling == 2)))
- && $opt =~ /^([^=]+)=(.*)$/s ) {
- $opt = $1;
- $optarg = $2;
- print STDERR ("=> option \"", $opt,
- "\", optarg = \"$optarg\"\n") if $debug;
- }
-
- #### Look it up ###
-
- my $tryopt = $opt; # option to try
-
- if ( $bundling && $starter eq '-' ) {
-
- # To try overrides, obey case ignore.
- $tryopt = $ignorecase ? lc($opt) : $opt;
-
- # If bundling == 2, long options can override bundles.
- if ( $bundling == 2 && length($tryopt) > 1
- && defined ($opctl->{$tryopt}) ) {
- print STDERR ("=> $starter$tryopt overrides unbundling\n")
- if $debug;
- }
- else {
- $tryopt = $opt;
- # Unbundle single letter option.
- $rest = length ($tryopt) > 0 ? substr ($tryopt, 1) : '';
- $tryopt = substr ($tryopt, 0, 1);
- $tryopt = lc ($tryopt) if $ignorecase > 1;
- print STDERR ("=> $starter$tryopt unbundled from ",
- "$starter$tryopt$rest\n") if $debug;
- $rest = undef unless $rest ne '';
- }
- }
-
- # Try auto-abbreviation.
- elsif ( $autoabbrev ) {
- # Sort the possible long option names.
- my @names = sort(keys (%$opctl));
- # Downcase if allowed.
- $opt = lc ($opt) if $ignorecase;
- $tryopt = $opt;
- # Turn option name into pattern.
- my $pat = quotemeta ($opt);
- # Look up in option names.
- my @hits = grep (/^$pat/, @names);
- print STDERR ("=> ", scalar(@hits), " hits (@hits) with \"$pat\" ",
- "out of ", scalar(@names), "\n") if $debug;
-
- # Check for ambiguous results.
- unless ( (@hits <= 1) || (grep ($_ eq $opt, @hits) == 1) ) {
- # See if all matches are for the same option.
- my %hit;
- foreach ( @hits ) {
- my $hit = $_;
- $hit = $opctl->{$hit}->[CTL_CNAME]
- if defined $opctl->{$hit}->[CTL_CNAME];
- $hit{$hit} = 1;
- }
- # Remove auto-supplied options (version, help).
- if ( keys(%hit) == 2 ) {
- if ( $auto_version && exists($hit{version}) ) {
- delete $hit{version};
- }
- elsif ( $auto_help && exists($hit{help}) ) {
- delete $hit{help};
- }
- }
- # Now see if it really is ambiguous.
- unless ( keys(%hit) == 1 ) {
- return (0) if $passthrough;
- warn ("Option ", $opt, " is ambiguous (",
- join(", ", @hits), ")\n");
- $error++;
- return (1, undef);
- }
- @hits = keys(%hit);
- }
-
- # Complete the option name, if appropriate.
- if ( @hits == 1 && $hits[0] ne $opt ) {
- $tryopt = $hits[0];
- $tryopt = lc ($tryopt) if $ignorecase;
- print STDERR ("=> option \"$opt\" -> \"$tryopt\"\n")
- if $debug;
- }
- }
-
- # Map to all lowercase if ignoring case.
- elsif ( $ignorecase ) {
- $tryopt = lc ($opt);
- }
-
- # Check validity by fetching the info.
- my $ctl = $opctl->{$tryopt};
- unless ( defined $ctl ) {
- return (0) if $passthrough;
- # Pretend one char when bundling.
- if ( $bundling == 1 && length($starter) == 1 ) {
- $opt = substr($opt,0,1);
- unshift (@ARGV, $starter.$rest) if defined $rest;
- }
- warn ("Unknown option: ", $opt, "\n");
- $error++;
- return (1, undef);
- }
- # Apparently valid.
- $opt = $tryopt;
- print STDERR ("=> found ", OptCtl($ctl),
- " for \"", $opt, "\"\n") if $debug;
-
- #### Determine argument status ####
-
- # If it is an option w/o argument, we're almost finished with it.
- my $type = $ctl->[CTL_TYPE];
- my $arg;
-
- if ( $type eq '' || $type eq '!' || $type eq '+' ) {
- if ( defined $optarg ) {
- return (0) if $passthrough;
- warn ("Option ", $opt, " does not take an argument\n");
- $error++;
- undef $opt;
- }
- elsif ( $type eq '' || $type eq '+' ) {
- # Supply explicit value.
- $arg = 1;
- }
- else {
- $opt =~ s/^no-?//i; # strip NO prefix
- $arg = 0; # supply explicit value
- }
- unshift (@ARGV, $starter.$rest) if defined $rest;
- return (1, $opt, $ctl, $arg);
- }
-
- # Get mandatory status and type info.
- my $mand = $ctl->[CTL_AMIN];
-
- # Check if there is an option argument available.
- if ( $gnu_compat && defined $optarg && $optarg eq '' ) {
- return (1, $opt, $ctl, $type eq 's' ? '' : 0) unless $mand;
- $optarg = 0 unless $type eq 's';
- }
-
- # Check if there is an option argument available.
- if ( defined $optarg
- ? ($optarg eq '')
- : !(defined $rest || @ARGV > 0) ) {
- # Complain if this option needs an argument.
- if ( $mand ) {
- return (0) if $passthrough;
- warn ("Option ", $opt, " requires an argument\n");
- $error++;
- return (1, undef);
- }
- if ( $type eq 'I' ) {
- # Fake incremental type.
- my @c = @$ctl;
- $c[CTL_TYPE] = '+';
- return (1, $opt, \@c, 1);
- }
- return (1, $opt, $ctl,
- defined($ctl->[CTL_DEFAULT]) ? $ctl->[CTL_DEFAULT] :
- $type eq 's' ? '' : 0);
- }
-
- # Get (possibly optional) argument.
- $arg = (defined $rest ? $rest
- : (defined $optarg ? $optarg : shift (@ARGV)));
-
- # Get key if this is a "name=value" pair for a hash option.
- my $key;
- if ($ctl->[CTL_DEST] == CTL_DEST_HASH && defined $arg) {
- ($key, $arg) = ($arg =~ /^([^=]*)=(.*)$/s) ? ($1, $2)
- : ($arg, defined($ctl->[CTL_DEFAULT]) ? $ctl->[CTL_DEFAULT] :
- ($mand ? undef : ($type eq 's' ? "" : 1)));
- if (! defined $arg) {
- warn ("Option $opt, key \"$key\", requires a value\n");
- $error++;
- # Push back.
- unshift (@ARGV, $starter.$rest) if defined $rest;
- return (1, undef);
- }
- }
-
- #### Check if the argument is valid for this option ####
-
- my $key_valid = $ctl->[CTL_DEST] == CTL_DEST_HASH ? "[^=]+=" : "";
-
- if ( $type eq 's' ) { # string
- # A mandatory string takes anything.
- return (1, $opt, $ctl, $arg, $key) if $mand;
-
- # An optional string takes almost anything.
- return (1, $opt, $ctl, $arg, $key)
- if defined $optarg || defined $rest;
- return (1, $opt, $ctl, $arg, $key) if $arg eq "-"; # ??
-
- # Check for option or option list terminator.
- if ($arg eq $argend ||
- $arg =~ /^$prefix.+/) {
- # Push back.
- unshift (@ARGV, $arg);
- # Supply empty value.
- $arg = '';
- }
- }
-
- elsif ( $type eq 'i' # numeric/integer
- || $type eq 'I' # numeric/integer w/ incr default
- || $type eq 'o' ) { # dec/oct/hex/bin value
-
- my $o_valid =
- $type eq 'o' ? "[-+]?[1-9][0-9]*|0x[0-9a-f]+|0b[01]+|0[0-7]*"
- : "[-+]?[0-9]+";
-
- if ( $bundling && defined $rest
- && $rest =~ /^($key_valid)($o_valid)(.*)$/si ) {
- ($key, $arg, $rest) = ($1, $2, $+);
- chop($key) if $key;
- $arg = ($type eq 'o' && $arg =~ /^0/) ? oct($arg) : 0+$arg;
- unshift (@ARGV, $starter.$rest) if defined $rest && $rest ne '';
- }
- elsif ( $arg =~ /^($o_valid)$/si ) {
- $arg = ($type eq 'o' && $arg =~ /^0/) ? oct($arg) : 0+$arg;
- }
- else {
- if ( defined $optarg || $mand ) {
- if ( $passthrough ) {
- unshift (@ARGV, defined $rest ? $starter.$rest : $arg)
- unless defined $optarg;
- return (0);
- }
- warn ("Value \"", $arg, "\" invalid for option ",
- $opt, " (",
- $type eq 'o' ? "extended " : '',
- "number expected)\n");
- $error++;
- # Push back.
- unshift (@ARGV, $starter.$rest) if defined $rest;
- return (1, undef);
- }
- else {
- # Push back.
- unshift (@ARGV, defined $rest ? $starter.$rest : $arg);
- if ( $type eq 'I' ) {
- # Fake incremental type.
- my @c = @$ctl;
- $c[CTL_TYPE] = '+';
- return (1, $opt, \@c, 1);
- }
- # Supply default value.
- $arg = defined($ctl->[CTL_DEFAULT]) ? $ctl->[CTL_DEFAULT] : 0;
- }
- }
- }
-
- elsif ( $type eq 'f' ) { # real number, int is also ok
- # We require at least one digit before a point or 'e',
- # and at least one digit following the point and 'e'.
- # [-]NN[.NN][eNN]
- if ( $bundling && defined $rest &&
- $rest =~ /^($key_valid)([-+]?[0-9]+(\.[0-9]+)?([eE][-+]?[0-9]+)?)(.*)$/s ) {
- ($key, $arg, $rest) = ($1, $2, $+);
- chop($key) if $key;
- unshift (@ARGV, $starter.$rest) if defined $rest && $rest ne '';
- }
- elsif ( $arg !~ /^[-+]?[0-9.]+(\.[0-9]+)?([eE][-+]?[0-9]+)?$/ ) {
- if ( defined $optarg || $mand ) {
- if ( $passthrough ) {
- unshift (@ARGV, defined $rest ? $starter.$rest : $arg)
- unless defined $optarg;
- return (0);
- }
- warn ("Value \"", $arg, "\" invalid for option ",
- $opt, " (real number expected)\n");
- $error++;
- # Push back.
- unshift (@ARGV, $starter.$rest) if defined $rest;
- return (1, undef);
- }
- else {
- # Push back.
- unshift (@ARGV, defined $rest ? $starter.$rest : $arg);
- # Supply default value.
- $arg = 0.0;
- }
- }
- }
- else {
- die("Getopt::Long internal error (Can't happen)\n");
- }
- return (1, $opt, $ctl, $arg, $key);
- }
-
- sub ValidValue ($$$$$) {
- my ($ctl, $arg, $mand, $argend, $prefix) = @_;
-
- if ( $ctl->[CTL_DEST] == CTL_DEST_HASH ) {
- return 0 unless $arg =~ /[^=]+=(.*)/;
- $arg = $1;
- }
-
- my $type = $ctl->[CTL_TYPE];
-
- if ( $type eq 's' ) { # string
- # A mandatory string takes anything.
- return (1) if $mand;
-
- return (1) if $arg eq "-";
-
- # Check for option or option list terminator.
- return 0 if $arg eq $argend || $arg =~ /^$prefix.+/;
- return 1;
- }
-
- elsif ( $type eq 'i' # numeric/integer
- || $type eq 'I' # numeric/integer w/ incr default
- || $type eq 'o' ) { # dec/oct/hex/bin value
-
- my $o_valid =
- $type eq 'o' ? "[-+]?[1-9][0-9]*|0x[0-9a-f]+|0b[01]+|0[0-7]*"
- : "[-+]?[0-9]+";
-
- return $arg =~ /^$o_valid$/si;
- }
-
- elsif ( $type eq 'f' ) { # real number, int is also ok
- # We require at least one digit before a point or 'e',
- # and at least one digit following the point and 'e'.
- # [-]NN[.NN][eNN]
- return $arg =~ /^[-+]?[0-9.]+(\.[0-9]+)?([eE][-+]?[0-9]+)?$/;
- }
- die("ValidValue: Cannot happen\n");
- }
-
- # Getopt::Long Configuration.
- sub Configure (@) {
- my (@options) = @_;
-
- my $prevconfig =
- [ $error, $debug, $major_version, $minor_version,
- $autoabbrev, $getopt_compat, $ignorecase, $bundling, $order,
- $gnu_compat, $passthrough, $genprefix, $auto_version, $auto_help,
- $longprefix ];
-
- if ( ref($options[0]) eq 'ARRAY' ) {
- ( $error, $debug, $major_version, $minor_version,
- $autoabbrev, $getopt_compat, $ignorecase, $bundling, $order,
- $gnu_compat, $passthrough, $genprefix, $auto_version, $auto_help,
- $longprefix ) = @{shift(@options)};
- }
-
- my $opt;
- foreach $opt ( @options ) {
- my $try = lc ($opt);
- my $action = 1;
- if ( $try =~ /^no_?(.*)$/s ) {
- $action = 0;
- $try = $+;
- }
- if ( ($try eq 'default' or $try eq 'defaults') && $action ) {
- ConfigDefaults ();
- }
- elsif ( ($try eq 'posix_default' or $try eq 'posix_defaults') ) {
- local $ENV{POSIXLY_CORRECT};
- $ENV{POSIXLY_CORRECT} = 1 if $action;
- ConfigDefaults ();
- }
- elsif ( $try eq 'auto_abbrev' or $try eq 'autoabbrev' ) {
- $autoabbrev = $action;
- }
- elsif ( $try eq 'getopt_compat' ) {
- $getopt_compat = $action;
- }
- elsif ( $try eq 'gnu_getopt' ) {
- if ( $action ) {
- $gnu_compat = 1;
- $bundling = 1;
- $getopt_compat = 0;
- $order = $PERMUTE;
- }
- }
- elsif ( $try eq 'gnu_compat' ) {
- $gnu_compat = $action;
- }
- elsif ( $try =~ /^(auto_?)?version$/ ) {
- $auto_version = $action;
- }
- elsif ( $try =~ /^(auto_?)?help$/ ) {
- $auto_help = $action;
- }
- elsif ( $try eq 'ignorecase' or $try eq 'ignore_case' ) {
- $ignorecase = $action;
- }
- elsif ( $try eq 'ignorecase_always' or $try eq 'ignore_case_always' ) {
- $ignorecase = $action ? 2 : 0;
- }
- elsif ( $try eq 'bundling' ) {
- $bundling = $action;
- }
- elsif ( $try eq 'bundling_override' ) {
- $bundling = $action ? 2 : 0;
- }
- elsif ( $try eq 'require_order' ) {
- $order = $action ? $REQUIRE_ORDER : $PERMUTE;
- }
- elsif ( $try eq 'permute' ) {
- $order = $action ? $PERMUTE : $REQUIRE_ORDER;
- }
- elsif ( $try eq 'pass_through' or $try eq 'passthrough' ) {
- $passthrough = $action;
- }
- elsif ( $try =~ /^prefix=(.+)$/ && $action ) {
- $genprefix = $1;
- # Turn into regexp. Needs to be parenthesized!
- $genprefix = "(" . quotemeta($genprefix) . ")";
- eval { '' =~ /$genprefix/; };
- die("Getopt::Long: invalid pattern \"$genprefix\"") if $@;
- }
- elsif ( $try =~ /^prefix_pattern=(.+)$/ && $action ) {
- $genprefix = $1;
- # Parenthesize if needed.
- $genprefix = "(" . $genprefix . ")"
- unless $genprefix =~ /^\(.*\)$/;
- eval { '' =~ m"$genprefix"; };
- die("Getopt::Long: invalid pattern \"$genprefix\"") if $@;
- }
- elsif ( $try =~ /^long_prefix_pattern=(.+)$/ && $action ) {
- $longprefix = $1;
- # Parenthesize if needed.
- $longprefix = "(" . $longprefix . ")"
- unless $longprefix =~ /^\(.*\)$/;
- eval { '' =~ m"$longprefix"; };
- die("Getopt::Long: invalid long prefix pattern \"$longprefix\"") if $@;
- }
- elsif ( $try eq 'debug' ) {
- $debug = $action;
- }
- else {
- die("Getopt::Long: unknown config parameter \"$opt\"")
- }
- }
- $prevconfig;
- }
-
- # Deprecated name.
- sub config (@) {
- Configure (@_);
- }
-
- # Issue a standard message for --version.
- #
- # The arguments are mostly the same as for Pod::Usage::pod2usage:
- #
- # - a number (exit value)
- # - a string (lead in message)
- # - a hash with options. See Pod::Usage for details.
- #
- sub VersionMessage(@) {
- # Massage args.
- my $pa = setup_pa_args("version", @_);
-
- my $v = $main::VERSION;
- my $fh = $pa->{-output} ||
- ($pa->{-exitval} eq "NOEXIT" || $pa->{-exitval} < 2) ? \*STDOUT : \*STDERR;
-
- print $fh (defined($pa->{-message}) ? $pa->{-message} : (),
- $0, defined $v ? " version $v" : (),
- "\n",
- "(", __PACKAGE__, "::", "GetOptions",
- " version ",
- defined($Getopt::Long::VERSION_STRING)
- ? $Getopt::Long::VERSION_STRING : $VERSION, ";",
- " Perl version ",
- $] >= 5.006 ? sprintf("%vd", $^V) : $],
- ")\n");
- exit($pa->{-exitval}) unless $pa->{-exitval} eq "NOEXIT";
- }
-
- # Issue a standard message for --help.
- #
- # The arguments are the same as for Pod::Usage::pod2usage:
- #
- # - a number (exit value)
- # - a string (lead in message)
- # - a hash with options. See Pod::Usage for details.
- #
- sub HelpMessage(@) {
- eval {
- require Pod::Usage;
- import Pod::Usage;
- 1;
- } || die("Cannot provide help: cannot load Pod::Usage\n");
-
- # Note that pod2usage will issue a warning if -exitval => NOEXIT.
- pod2usage(setup_pa_args("help", @_));
-
- }
-
- # Helper routine to set up a normalized hash ref to be used as
- # argument to pod2usage.
- sub setup_pa_args($@) {
- my $tag = shift; # who's calling
-
- # If called by direct binding to an option, it will get the option
- # name and value as arguments. Remove these, if so.
- @_ = () if @_ == 2 && $_[0] eq $tag;
-
- my $pa;
- if ( @_ > 1 ) {
- $pa = { @_ };
- }
- else {
- $pa = shift || {};
- }
-
- # At this point, $pa can be a number (exit value), string
- # (message) or hash with options.
-
- if ( UNIVERSAL::isa($pa, 'HASH') ) {
- # Get rid of -msg vs. -message ambiguity.
- $pa->{-message} = $pa->{-msg};
- delete($pa->{-msg});
- }
- elsif ( $pa =~ /^-?\d+$/ ) {
- $pa = { -exitval => $pa };
- }
- else {
- $pa = { -message => $pa };
- }
-
- # These are _our_ defaults.
- $pa->{-verbose} = 0 unless exists($pa->{-verbose});
- $pa->{-exitval} = 0 unless exists($pa->{-exitval});
- $pa;
- }
-
- # Sneak way to know what version the user requested.
- sub VERSION {
- $requested_version = $_[1];
- shift->SUPER::VERSION(@_);
- }
-
- 1;
-
- ################ Documentation ################
-
-