-# GetOpt::Long.pm -- POSIX compatible options parsing
+# GetOpt::Long.pm -- Universal options parsing
-# RCS Status : $Id: GetoptLong.pm,v 2.1 1996/02/02 20:24:35 jv Exp $
+package Getopt::Long;
+
+# RCS Status : $Id: GetoptLong.pl,v 2.18 1998-06-14 15:02:19+02 jv Exp $
# Author : Johan Vromans
# Created On : Tue Sep 11 15:00:12 1990
# Last Modified By: Johan Vromans
-# Last Modified On: Fri Feb 2 21:24:32 1996
-# Update Count : 347
+# Last Modified On: Sun Jun 14 13:17:22 1998
+# Update Count : 705
# Status : Released
-package Getopt::Long;
-require 5.000;
-require Exporter;
+################ Copyright ################
+
+# This program is Copyright 1990,1998 by Johan Vromans.
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of 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., 59 Temple Place, Suite 330, Boston,
+# MA 02111-1307, USA.
+
+################ Module Preamble ################
-@ISA = qw(Exporter);
-@EXPORT = qw(&GetOptions $REQUIRE_ORDER $PERMUTE $RETURN_IN_ORDER);
-$VERSION = sprintf("%d.%02d", q$Revision: 2.1 $ =~ /(\d+)\.(\d+)/);
use strict;
+BEGIN {
+ require 5.004;
+ use Exporter ();
+ use vars qw($VERSION @ISA @EXPORT @EXPORT_OK %EXPORT_TAGS);
+ $VERSION = "2.17";
+
+ @ISA = qw(Exporter);
+ @EXPORT = qw(&GetOptions $REQUIRE_ORDER $PERMUTE $RETURN_IN_ORDER);
+ %EXPORT_TAGS = qw();
+ @EXPORT_OK = qw();
+ use AutoLoader qw(AUTOLOAD);
+}
+
+# User visible variables.
+use vars @EXPORT, @EXPORT_OK;
+use vars qw($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);
+
+# Public subroutines.
+sub Configure (@);
+sub config (@); # deprecated name
+sub GetOptions;
+
+# Private subroutines.
+sub ConfigDefaults ();
+sub FindOption ($$$$$$$);
+sub Croak (@); # demand loading the real Croak
+
+################ Local Variables ################
+
+################ 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
+}
+
+################ 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+)/;
+
+# Set defaults.
+ConfigDefaults ();
+
+################ Package return ################
+
+1;
+
+__END__
+
+################ AutoLoading subroutines ################
+
+# RCS Status : $Id: GetoptLongAl.pl,v 2.20 1998-06-14 15:02:19+02 jv Exp $
+# Author : Johan Vromans
+# Created On : Fri Mar 27 11:50:30 1998
+# Last Modified By: Johan Vromans
+# Last Modified On: Sun Jun 14 13:54:35 1998
+# Update Count : 24
+# Status : Released
+
+sub GetOptions {
+
+ my @optionlist = @_; # local copy of the option descriptions
+ my $argend = '--'; # option list terminator
+ my %opctl = (); # table of arg.specs (long and abbrevs)
+ my %bopctl = (); # table of arg.specs (bundles)
+ my $pkg = (caller)[0]; # current context
+ # Needed if linkage is omitted.
+ my %aliases= (); # alias table
+ my @ret = (); # accum for non-options
+ my %linkage; # linkage
+ my $userlinkage; # user supplied HASH
+ my $opt; # current option
+ my $genprefix = $genprefix; # so we can call the same module many times
+ my @opctl; # the possible long option names
+
+ $error = '';
+
+ print STDERR ("GetOpt::Long $Getopt::Long::VERSION ",
+ "called from package \"$pkg\".",
+ "\n ",
+ 'GetOptionsAl $Revision: 2.20 $ ',
+ "\n ",
+ "ARGV: (@ARGV)",
+ "\n ",
+ "autoabbrev=$autoabbrev,".
+ "bundling=$bundling,",
+ "getopt_compat=$getopt_compat,",
+ "order=$order,",
+ "\n ",
+ "ignorecase=$ignorecase,",
+ "passthrough=$passthrough,",
+ "genprefix=\"$genprefix\".",
+ "\n")
+ if $debug;
+
+ # 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.
+ $userlinkage = undef;
+ if ( ref($optionlist[0]) and
+ "$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.
+ if ( $optionlist[0] =~ /^\W+$/ ) {
+ $genprefix = shift (@optionlist);
+ # Turn into regexp. Needs to be parenthesized!
+ $genprefix =~ s/(\W)/\\$1/g;
+ $genprefix = "([" . $genprefix . "])";
+ }
+
+ # Verify correctness of optionlist.
+ %opctl = ();
+ %bopctl = ();
+ while ( @optionlist > 0 ) {
+ my $opt = shift (@optionlist);
+
+ # Strip leading prefix so people can specify "--foo=i" if they like.
+ $opt = $+ if $opt =~ /^$genprefix+(.*)$/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";
+ next;
+ }
+ $linkage{'<>'} = shift (@optionlist);
+ next;
+ }
+
+ # Match option spec. Allow '?' as an alias.
+ if ( $opt !~ /^((\w+[-\w]*)(\|(\?|\w[-\w]*)?)*)?([!~+]|[=:][infse][@%]?)?$/ ) {
+ $error .= "Error in option spec: \"$opt\"\n";
+ next;
+ }
+ my ($o, $c, $a) = ($1, $5);
+ $c = '' unless defined $c;
+
+ if ( ! defined $o ) {
+ # empty -> '-' option
+ $opctl{$o = ''} = $c;
+ }
+ else {
+ # Handle alias names
+ my @o = split (/\|/, $o);
+ my $linko = $o = $o[0];
+ # Force an alias if the option name is not locase.
+ $a = $o unless $o eq lc($o);
+ $o = lc ($o)
+ if $ignorecase > 1
+ || ($ignorecase
+ && ($bundling ? length($o) > 1 : 1));
+
+ foreach ( @o ) {
+ if ( $bundling && length($_) == 1 ) {
+ $_ = lc ($_) if $ignorecase > 1;
+ if ( $c eq '!' ) {
+ $opctl{"no$_"} = $c;
+ warn ("Ignoring '!' modifier for short option $_\n");
+ $c = '';
+ }
+ $opctl{$_} = $bopctl{$_} = $c;
+ }
+ else {
+ $_ = lc ($_) if $ignorecase;
+ if ( $c eq '!' ) {
+ $opctl{"no$_"} = $c;
+ $c = '';
+ }
+ $opctl{$_} = $c;
+ }
+ if ( defined $a ) {
+ # Note alias.
+ $aliases{$_} = $a;
+ }
+ else {
+ # Set primary name.
+ $a = $_;
+ }
+ }
+ $o = $linko;
+ }
+
+ # 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 $userlinkage->{$o} && ref($userlinkage->{$o}) ) {
+ print STDERR ("=> found userlinkage for \"$o\": ",
+ "$userlinkage->{$o}\n")
+ if $debug;
+ unshift (@optionlist, $userlinkage->{$o});
+ }
+ else {
+ # Do nothing. Being undefined will be handled later.
+ next;
+ }
+ }
+ }
+
+ # Copy the linkage. If omitted, link to global variable.
+ if ( @optionlist > 0 && ref($optionlist[0]) ) {
+ print STDERR ("=> link \"$o\" to $optionlist[0]\n")
+ if $debug;
+ if ( ref($optionlist[0]) =~ /^(SCALAR|CODE)$/ ) {
+ $linkage{$o} = shift (@optionlist);
+ }
+ elsif ( ref($optionlist[0]) =~ /^(ARRAY)$/ ) {
+ $linkage{$o} = shift (@optionlist);
+ $opctl{$o} .= '@'
+ if $opctl{$o} ne '' and $opctl{$o} !~ /\@$/;
+ $bopctl{$o} .= '@'
+ if $bundling and defined $bopctl{$o} and
+ $bopctl{$o} ne '' and $bopctl{$o} !~ /\@$/;
+ }
+ elsif ( ref($optionlist[0]) =~ /^(HASH)$/ ) {
+ $linkage{$o} = shift (@optionlist);
+ $opctl{$o} .= '%'
+ if $opctl{$o} ne '' and $opctl{$o} !~ /\%$/;
+ $bopctl{$o} .= '%'
+ if $bundling and defined $bopctl{$o} and
+ $bopctl{$o} ne '' and $bopctl{$o} !~ /\%$/;
+ }
+ else {
+ $error .= "Invalid option linkage for \"$opt\"\n";
+ }
+ }
+ else {
+ # Link to global $opt_XXX variable.
+ # Make sure a valid perl identifier results.
+ my $ov = $o;
+ $ov =~ s/\W/_/g;
+ if ( $c =~ /@/ ) {
+ print STDERR ("=> link \"$o\" to \@$pkg","::opt_$ov\n")
+ if $debug;
+ eval ("\$linkage{\$o} = \\\@".$pkg."::opt_$ov;");
+ }
+ elsif ( $c =~ /%/ ) {
+ print STDERR ("=> link \"$o\" to \%$pkg","::opt_$ov\n")
+ if $debug;
+ eval ("\$linkage{\$o} = \\\%".$pkg."::opt_$ov;");
+ }
+ else {
+ print STDERR ("=> link \"$o\" to \$$pkg","::opt_$ov\n")
+ if $debug;
+ eval ("\$linkage{\$o} = \\\$".$pkg."::opt_$ov;");
+ }
+ }
+ }
+
+ # Bail out if errors found.
+ die ($error) if $error;
+ $error = 0;
+
+ # Sort the possible long option names.
+ @opctl = sort(keys (%opctl)) if $autoabbrev;
+
+ # Show the options tables if debugging.
+ if ( $debug ) {
+ my ($arrow, $k, $v);
+ $arrow = "=> ";
+ while ( ($k,$v) = each(%opctl) ) {
+ print STDERR ($arrow, "\$opctl{\"$k\"} = \"$v\"\n");
+ $arrow = " ";
+ }
+ $arrow = "=> ";
+ while ( ($k,$v) = each(%bopctl) ) {
+ print STDERR ($arrow, "\$bopctl{\"$k\"} = \"$v\"\n");
+ $arrow = " ";
+ }
+ }
+
+ # Process argument list
+ while ( @ARGV > 0 ) {
+
+ #### Get next argument ####
+
+ $opt = shift (@ARGV);
+ print STDERR ("=> option \"", $opt, "\"\n") if $debug;
+
+ #### Determine what we have ####
+
+ # Double dash is option list terminator.
+ if ( $opt eq $argend ) {
+ # Finish. Push back accumulated arguments and return.
+ unshift (@ARGV, @ret)
+ if $order == $PERMUTE;
+ return ($error == 0);
+ }
+
+ my $tryopt = $opt;
+ my $found; # success status
+ my $dsttype; # destination type ('@' or '%')
+ my $incr; # destination increment
+ my $key; # key (if hash type)
+ my $arg; # option argument
+
+ ($found, $opt, $arg, $dsttype, $incr, $key) =
+ FindOption ($genprefix, $argend, $opt,
+ \%opctl, \%bopctl, \@opctl, \%aliases);
+
+ if ( $found ) {
+
+ # FindOption undefines $opt in case of errors.
+ next unless defined $opt;
+
+ if ( defined $arg ) {
+ $opt = $aliases{$opt} if defined $aliases{$opt};
+
+ if ( defined $linkage{$opt} ) {
+ print STDERR ("=> ref(\$L{$opt}) -> ",
+ ref($linkage{$opt}), "\n") if $debug;
+
+ if ( ref($linkage{$opt}) eq 'SCALAR' ) {
+ if ( $incr ) {
+ print STDERR ("=> \$\$L{$opt} += \"$arg\"\n")
+ if $debug;
+ if ( defined ${$linkage{$opt}} ) {
+ ${$linkage{$opt}} += $arg;
+ }
+ else {
+ ${$linkage{$opt}} = $arg;
+ }
+ }
+ else {
+ print STDERR ("=> \$\$L{$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}(\"$opt\", \"$arg\")\n")
+ if $debug;
+ &{$linkage{$opt}}($opt, $arg);
+ }
+ else {
+ print STDERR ("Invalid REF type \"", ref($linkage{$opt}),
+ "\" in linkage\n");
+ Croak ("Getopt::Long -- internal error!\n");
+ }
+ }
+ # No entry in linkage means entry in userlinkage.
+ elsif ( $dsttype eq '@' ) {
+ 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 ( $dsttype eq '%' ) {
+ 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 ( $incr ) {
+ print STDERR ("=> \$L{$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;
+ }
+ }
+ }
+ }
+
+ # 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 = $linkage{'<>'})) ) {
+ &$cb ($tryopt);
+ }
+ else {
+ print STDERR ("=> saving \"$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 ( $order == $PERMUTE ) {
+ # Push back accumulated arguments
+ print STDERR ("=> restoring \"", join('" "', @ret), "\"\n")
+ if $debug && @ret > 0;
+ unshift (@ARGV, @ret) if @ret > 0;
+ }
+
+ return ($error == 0);
+}
+
+# Option lookup.
+sub FindOption ($$$$$$$) {
+
+ # returns (1, $opt, $arg, $dsttype, $incr, $key) if okay,
+ # returns (0) otherwise.
+
+ my ($prefix, $argend, $opt, $opctl, $bopctl, $names, $aliases) = @_;
+ my $key; # hash key for a hash option
+ my $arg;
+
+ print STDERR ("=> find \"$opt\", prefix=\"$prefix\"\n") if $debug;
+
+ return (0) unless $opt =~ /^$prefix(.*)$/s;
+
+ $opt = $+;
+ my ($starter) = $1;
+
+ print STDERR ("=> split \"$starter\"+\"$opt\"\n") if $debug;
+
+ my $optarg = undef; # value supplied with --opt=value
+ my $rest = undef; # remainder from unbundling
+
+ # If it is a long option, it may include the value.
+ if (($starter eq "--" || ($getopt_compat && !$bundling))
+ && $opt =~ /^([^=]+)=(.*)$/s ) {
+ $opt = $1;
+ $optarg = $2;
+ print STDERR ("=> option \"", $opt,
+ "\", optarg = \"$optarg\"\n") if $debug;
+ }
+
+ #### Look it up ###
+
+ my $tryopt = $opt; # option to try
+ my $optbl = $opctl; # table to look it up (long names)
+ my $type;
+ my $dsttype = '';
+ my $incr = 0;
+
+ if ( $bundling && $starter eq '-' ) {
+ # Unbundle single letter option.
+ $rest = substr ($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 '';
+ $optbl = $bopctl; # look it up in the short names table
+
+ # If bundling == 2, long options can override bundles.
+ if ( $bundling == 2 and
+ defined ($type = $opctl->{$tryopt.$rest}) ) {
+ print STDERR ("=> $starter$tryopt rebundled to ",
+ "$starter$tryopt$rest\n") if $debug;
+ $tryopt .= $rest;
+ undef $rest;
+ }
+ }
+
+ # Try auto-abbreviation.
+ elsif ( $autoabbrev ) {
+ # Downcase if allowed.
+ $tryopt = $opt = lc ($opt) if $ignorecase;
+ # 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 ) {
+ $_ = $aliases->{$_} if defined $aliases->{$_};
+ $hit{$_} = 1;
+ }
+ # Now see if it really is ambiguous.
+ unless ( keys(%hit) == 1 ) {
+ return (0) if $passthrough;
+ warn ("Option ", $opt, " is ambiguous (",
+ join(", ", @hits), ")\n");
+ $error++;
+ undef $opt;
+ return (1, $opt,$arg,$dsttype,$incr,$key);
+ }
+ @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.
+ $type = $optbl->{$tryopt} unless defined $type;
+ unless ( defined $type ) {
+ return (0) if $passthrough;
+ warn ("Unknown option: ", $opt, "\n");
+ $error++;
+ return (1, $opt,$arg,$dsttype,$incr,$key);
+ }
+ # Apparently valid.
+ $opt = $tryopt;
+ print STDERR ("=> found \"$type\" for ", $opt, "\n") if $debug;
+
+ #### Determine argument status ####
+
+ # If it is an option w/o argument, we're almost finished with it.
+ 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 '+' ) {
+ $arg = 1; # supply explicit value
+ $incr = $type eq '+';
+ }
+ else {
+ substr ($opt, 0, 2) = ''; # strip NO prefix
+ $arg = 0; # supply explicit value
+ }
+ unshift (@ARGV, $starter.$rest) if defined $rest;
+ return (1, $opt,$arg,$dsttype,$incr,$key);
+ }
+
+ # Get mandatory status and type info.
+ my $mand;
+ ($mand, $type, $dsttype, $key) = $type =~ /^(.)(.)([@%]?)$/;
+
+ # 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 eq "=" ) {
+ return (0) if $passthrough;
+ warn ("Option ", $opt, " requires an argument\n");
+ $error++;
+ undef $opt;
+ }
+ if ( $mand eq ":" ) {
+ $arg = $type eq "s" ? '' : 0;
+ }
+ return (1, $opt,$arg,$dsttype,$incr,$key);
+ }
+
+ # 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.
+ $key = undef;
+ if ($dsttype eq '%' && defined $arg) {
+ ($key, $arg) = ($arg =~ /^(.*)=(.*)$/s) ? ($1, $2) : ($arg, 1);
+ }
+
+ #### Check if the argument is valid for this option ####
+
+ if ( $type eq "s" ) { # string
+ # A mandatory string takes anything.
+ return (1, $opt,$arg,$dsttype,$incr,$key) if $mand eq "=";
+
+ # An optional string takes almost anything.
+ return (1, $opt,$arg,$dsttype,$incr,$key)
+ if defined $optarg || defined $rest;
+ return (1, $opt,$arg,$dsttype,$incr,$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 "n" || $type eq "i" ) { # numeric/integer
+ if ( $bundling && defined $rest && $rest =~ /^(-?[0-9]+)(.*)$/s ) {
+ $arg = $1;
+ $rest = $2;
+ unshift (@ARGV, $starter.$rest) if defined $rest && $rest ne '';
+ }
+ elsif ( $arg !~ /^-?[0-9]+$/ ) {
+ if ( defined $optarg || $mand eq "=" ) {
+ if ( $passthrough ) {
+ unshift (@ARGV, defined $rest ? $starter.$rest : $arg)
+ unless defined $optarg;
+ return (0);
+ }
+ warn ("Value \"", $arg, "\" invalid for option ",
+ $opt, " (number expected)\n");
+ $error++;
+ undef $opt;
+ # Push back.
+ unshift (@ARGV, $starter.$rest) if defined $rest;
+ }
+ else {
+ # Push back.
+ unshift (@ARGV, defined $rest ? $starter.$rest : $arg);
+ # Supply default value.
+ $arg = 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 &&
+ $rest =~ /^(-?[0-9]+(\.[0-9]+)?([eE]-?[0-9]+)?)(.*)$/s ) {
+ $arg = $1;
+ $rest = $+;
+ unshift (@ARGV, $starter.$rest) if defined $rest && $rest ne '';
+ }
+ elsif ( $arg !~ /^-?[0-9.]+(\.[0-9]+)?([eE]-?[0-9]+)?$/ ) {
+ if ( defined $optarg || $mand eq "=" ) {
+ 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++;
+ undef $opt;
+ # Push back.
+ unshift (@ARGV, $starter.$rest) if defined $rest;
+ }
+ else {
+ # Push back.
+ unshift (@ARGV, defined $rest ? $starter.$rest : $arg);
+ # Supply default value.
+ $arg = 0.0;
+ }
+ }
+ }
+ else {
+ Croak ("GetOpt::Long internal error (Can't happen)\n");
+ }
+ return (1, $opt, $arg, $dsttype, $incr, $key);
+}
+
+# Getopt::Long Configuration.
+sub Configure (@) {
+ my (@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' ) {
+ ConfigDefaults () if $action;
+ }
+ elsif ( $try eq 'auto_abbrev' or $try eq 'autoabbrev' ) {
+ $autoabbrev = $action;
+ }
+ elsif ( $try eq 'getopt_compat' ) {
+ $getopt_compat = $action;
+ }
+ elsif ( $try eq 'ignorecase' or $try eq 'ignore_case' ) {
+ $ignorecase = $action;
+ }
+ elsif ( $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 ( $try =~ /^prefix=(.+)$/ ) {
+ $genprefix = $1;
+ # Turn into regexp. Needs to be parenthesized!
+ $genprefix = "(" . quotemeta($genprefix) . ")";
+ eval { '' =~ /$genprefix/; };
+ Croak ("Getopt::Long: invalid pattern \"$genprefix\"") if $@;
+ }
+ elsif ( $try =~ /^prefix_pattern=(.+)$/ ) {
+ $genprefix = $1;
+ # Parenthesize if needed.
+ $genprefix = "(" . $genprefix . ")"
+ unless $genprefix =~ /^\(.*\)$/;
+ eval { '' =~ /$genprefix/; };
+ Croak ("Getopt::Long: invalid pattern \"$genprefix\"") if $@;
+ }
+ elsif ( $try eq 'debug' ) {
+ $debug = $action;
+ }
+ else {
+ Croak ("Getopt::Long: unknown config parameter \"$opt\"")
+ }
+ }
+}
+
+# Deprecated name.
+sub config (@) {
+ Configure (@_);
+}
+
+# To prevent Carp from being loaded unnecessarily.
+sub Croak (@) {
+ require 'Carp.pm';
+ $Carp::CarpLevel = 1;
+ Carp::croak(@_);
+};
+
+################ Documentation ################
+
=head1 NAME
GetOptions - extended processing of command line options
GetOptions(). This function adheres to the POSIX syntax for command
line options, with GNU extensions. In general, this means that options
have long names instead of single letters, and are introduced with a
-double dash "--". There is no bundling of command line options, as was
-the case with the more traditional single-letter approach. For
-example, the UNIX "ps" command can be given the command line "option"
+double dash "--". Support for bundling of command line options, as was
+the case with the more traditional single-letter approach, is provided
+but not enabled by default. For example, the UNIX "ps" command can be
+given the command line "option"
-vax
variable that will be set when the option is used. For example, the
following call to GetOptions:
- &GetOptions("size=i" => \$offset);
+ GetOptions("size=i" => \$offset);
will accept a command line option "size" that must have an integer
value. With a command line of "--size 24" this will cause the variable
$offset to get the value 24.
Alternatively, the first argument to GetOptions may be a reference to
-a HASH describing the linkage for the options. The following call is
-equivalent to the example above:
+a HASH describing the linkage for the options, or an object whose
+class is based on a HASH. The following call is equivalent to the
+example above:
%optctl = ("size" => \$offset);
- &GetOptions(\%optctl, "size=i");
+ GetOptions(\%optctl, "size=i");
Linkage may be specified using either of the above methods, or both.
Linkage specified in the argument list takes precedence over the
the command line.
Each option specifier designates the name of the option, optionally
-followed by an argument specifier. Values for argument specifiers are:
+followed by an argument specifier.
-=over 8
+Options that do not take arguments will have no argument specifier.
+The option variable will be set to 1 if the option is used.
-=item <none>
+For the other options, the values for argument specifiers are:
-Option does not take an argument.
-The option variable will be set to 1.
+=over 8
=item !
(with value 0).
The option variable will be set to 1, or 0 if negated.
+=item +
+
+Option does not take an argument and will be incremented by 1 every
+time it appears on the command line. E.g. "more+", when used with
+B<--more --more --more>, will set the option variable to 3 (provided
+it was 0 or undefined at first).
+
+The B<+> specifier is ignored if the option destination is not a SCALAR.
+
=item =s
Option takes a mandatory string argument.
the HASH. For example:
%optctl = ();
- &GetOptions (\%optctl, "size=i");
+ GetOptions (\%optctl, "size=i");
will perform the equivalent of the assignment
For array options, a reference to an array is used, e.g.:
%optctl = ();
- &GetOptions (\%optctl, "sizes=i@");
+ GetOptions (\%optctl, "sizes=i@");
with command line "-sizes 24 -sizes 48" will perform the equivalent of
the assignment
$optctl{"sizes"} = [24, 48];
+For hash options (an option whose argument looks like "name=value"),
+a reference to a hash is used, e.g.:
+
+ %optctl = ();
+ GetOptions (\%optctl, "define=s%");
+
+with command line "--define foo=hello --define bar=world" will perform the
+equivalent of the assignment
+
+ $optctl{"define"} = {foo=>'hello', bar=>'world')
+
If no linkage is explicitly specified and no ref HASH is passed,
GetOptions will put the value in a global variable named after the
option, prefixed by "opt_". To yield a usable Perl variable,
in the namespace of the calling program, not necessarily B<main>.
For example:
- &GetOptions ("size=i", "sizes=i@");
+ GetOptions ("size=i", "sizes=i@");
with command line "-size 10 -sizes 24 -sizes 48" will perform the
equivalent of the assignments
identifier is $opt_ .
The linkage specifier can be a reference to a scalar, a reference to
-an array or a reference to a subroutine.
+an array, a reference to a hash or a reference to a subroutine.
+
+Note that, if your code is running under the recommended C<use strict
+'vars'> pragma, it may be helpful to declare these package variables
+via C<use vars> perhaps something like this:
+
+ use vars qw/ $opt_size @opt_sizes $opt_bar /;
If a REF SCALAR is supplied, the new value is stored in the referenced
variable. If the option occurs more than once, the previous value is
If a REF ARRAY is supplied, the new value is appended (pushed) to the
referenced array.
+If a REF HASH is supplied, the option value should look like "key" or
+"key=value" (if the "=value" is omitted then a value of 1 is implied).
+In this case, the element of the referenced hash with the key "key"
+is assigned "value".
+
If a REF CODE is supplied, the referenced subroutine is called with
two arguments: the option name and the option value.
The option name is always the true name, not an abbreviation or alias.
The option name may actually be a list of option names, separated by
"|"s, e.g. "foo|bar|blech=s". In this example, "foo" is the true name
-op this option. If no linkage is specified, options "foo", "bar" and
-"blech" all will set $opt_foo.
+of this option. If no linkage is specified, options "foo", "bar" and
+"blech" all will set $opt_foo. For convenience, the single character
+"?" is allowed as an alias, e.g. "help|?".
Option names may be abbreviated to uniqueness, depending on
-configuration variable $Getopt::Long::autoabbrev.
+configuration option B<auto_abbrev>.
=head2 Non-option call-back routine
-A special option specifier, <>, can be used to designate a subroutine
+A special option specifier, E<lt>E<gt>, can be used to designate a subroutine
to handle non-option arguments. GetOptions will immediately call this
subroutine for every non-option it encounters in the options list.
This subroutine gets the name of the non-option passed.
-This feature requires $Getopt::Long::order to have the value $PERMUTE.
+This feature requires configuration option B<permute>, see section
+CONFIGURATION OPTIONS.
+
See also the examples.
=head2 Option starters
Options that start with "--" may have an argument appended, separated
with an "=", e.g. "--foo=bar".
-=head2 Return value
+=head2 Return values and Errors
+
+Configuration errors and errors in the option definitions are
+signalled using C<die()> and will terminate the calling
+program unless the call to C<Getopt::Long::GetOptions()> was embedded
+in C<eval { ... }> or C<die()> was trapped using C<$SIG{__DIE__}>.
+
+A return value of 1 (true) indicates success.
+
+A return status of 0 (false) indicates that the function detected one
+or more errors during option parsing. These errors are signalled using
+C<warn()> and can be trapped with C<$SIG{__WARN__}>.
-A return status of 0 (false) indicates that the function detected
-one or more errors.
+Errors that can't happen are signalled using C<Carp::croak()>.
=head1 COMPATIBILITY
the module.
If an "@" sign is appended to the argument specifier, the option is
-treated as an array. Value(s) are not set, but pushed into array
-@opt_name. This only applies if no linkage is supplied.
+treated as an array. Value(s) are not set, but pushed into array
+@opt_name. If explicit linkage is supplied, this must be a reference
+to an ARRAY.
-If configuration variable $Getopt::Long::getopt_compat is set to a
-non-zero value, options that start with "+" may also include their
-arguments, e.g. "+foo=bar". This is for compatiblity with older
-implementations of the GNU "getopt" routine.
+If an "%" sign is appended to the argument specifier, the option is
+treated as a hash. Value(s) of the form "name=value" are set by
+setting the element of the hash %opt_name with key "name" to "value"
+(if the "=value" portion is omitted it defaults to 1). If explicit
+linkage is supplied, this must be a reference to a HASH.
+
+If configuration option B<getopt_compat> is set (see section
+CONFIGURATION OPTIONS), options that start with "+" or "-" may also
+include their arguments, e.g. "+foo=bar". This is for compatiblity
+with older implementations of the GNU "getopt" routine.
If the first argument to GetOptions is a string consisting of only
non-alphanumeric characters, it is taken to specify the option starter
--bar= -> $opt_bar = ''
--bar=-- -> $opt_bar = '--'
-Example of using variabel references:
+Example of using variable references:
- $ret = &GetOptions ('foo=s', \$foo, 'bar=i', 'ar=s', \@ar);
+ $ret = GetOptions ('foo=s', \$foo, 'bar=i', 'ar=s', \@ar);
With command line options "-foo blech -bar 24 -ar xx -ar yy"
this will result in:
- $bar = 'blech'
+ $foo = 'blech'
$opt_bar = 24
@ar = ('xx','yy')
-Example of using the <> option specifier:
+Example of using the E<lt>E<gt> option specifier:
@ARGV = qw(-foo 1 bar -foo 2 blech);
- &GetOptions("foo=i", \$myfoo, "<>", \&mysub);
+ GetOptions("foo=i", \$myfoo, "<>", \&mysub);
Results:
- &mysub("bar") will be called (with $myfoo being 1)
- &mysub("blech") will be called (with $myfoo being 2)
+ mysub("bar") will be called (with $myfoo being 1)
+ mysub("blech") will be called (with $myfoo being 2)
Compare this with:
@ARGV = qw(-foo 1 bar -foo 2 blech);
- &GetOptions("foo=i", \$myfoo);
+ GetOptions("foo=i", \$myfoo);
This will leave the non-options in @ARGV:
$myfoo -> 2
@ARGV -> qw(bar blech)
-=head1 CONFIGURATION VARIABLES
+=head1 CONFIGURATION OPTIONS
+
+B<GetOptions> can be configured by calling subroutine
+B<Getopt::Long::Configure>. This subroutine takes a list of quoted
+strings, each specifying a configuration option to be set, e.g.
+B<ignore_case>. Options can be reset by prefixing with B<no_>, e.g.
+B<no_ignore_case>. Case does not matter. Multiple calls to B<config>
+are possible.
+
+Previous versions of Getopt::Long used variables for the purpose of
+configuring. Although manipulating these variables still work, it
+is strongly encouraged to use the new B<config> routine. Besides, it
+is much easier.
-The following variables can be set to change the default behaviour of
-GetOptions():
+The following options are available:
=over 12
-=item $Getopt::Long::autoabbrev
+=item default
+
+This option causes all configuration options to be reset to their
+default values.
+
+=item auto_abbrev
Allow option names to be abbreviated to uniqueness.
-Default is 1 unless environment variable
-POSIXLY_CORRECT has been set.
+Default is set unless environment variable
+POSIXLY_CORRECT has been set, in which case B<auto_abbrev> is reset.
-=item $Getopt::Long::getopt_compat
+=item getopt_compat
+
+Allow '+' to start options.
+Default is set unless environment variable
+POSIXLY_CORRECT has been set, in which case B<getopt_compat> is reset.
+
+=item require_order
+
+Whether non-options are allowed to be mixed with
+options.
+Default is set unless environment variable
+POSIXLY_CORRECT has been set, in which case b<require_order> is reset.
-Allow '+' to start options.
-Default is 1 unless environment variable
-POSIXLY_CORRECT has been set.
+See also B<permute>, which is the opposite of B<require_order>.
-=item $Getopt::Long::order
+=item permute
Whether non-options are allowed to be mixed with
options.
-Default is $REQUIRE_ORDER if environment variable
-POSIXLY_CORRECT has been set, $PERMUTE otherwise.
+Default is set unless environment variable
+POSIXLY_CORRECT has been set, in which case B<permute> is reset.
+Note that B<permute> is the opposite of B<require_order>.
-$PERMUTE means that
+If B<permute> is set, this means that
-foo arg1 -bar arg2 arg3
will call the call-back routine for arg1 and arg2, and terminate
leaving arg2 in @ARGV.
-If $Getopt::Long::order is $REQUIRE_ORDER, options processing
+If B<require_order> is set, options processing
terminates when the first non-option is encountered.
-foo arg1 -bar arg2 arg3
-foo -- arg1 -bar arg2 arg3
-$RETURN_IN_ORDER is not supported by GetOptions().
-
-=item $Getopt::Long::ignorecase
-
-Ignore case when matching options. Default is 1.
-
-=item $Getopt::Long::VERSION
-
-The version number of this Getopt::Long implementation in the format
-C<major>.C<minor>. This can be used to have Exporter check the
-version, e.g.
-
- use Getopt::Long 2.00;
-
-You can inspect $Getopt::Long::major_version and
-$Getopt::Long::minor_version for the individual components.
-
-=item $Getopt::Long::error
-
-Internal error flag. May be incremented from a call-back routine to
-cause options parsing to fail.
-
-=item $Getopt::Long::debug
-
-Enable copious debugging output. Default is 0.
-
-=back
-
-=cut
-
-################ Introduction ################
-#
-# This package implements an extended getopt function. This function
-# adheres to the new syntax (long option names, no bundling). It tries
-# to implement the better functionality of traditional, GNU and POSIX
-# getopt functions.
-#
-# This program is Copyright 1990,1996 by Johan Vromans.
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of 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.
-
-################ History ################
-#
-# 13-Jan-1996 Johan Vromans
-# Generalized the linkage interface.
-# Eliminated the linkage argument.
-# Add code references as a possible value for the option linkage.
-# Add option specifier <> to have a call-back for non-options.
-#
-# 26-Dec-1995 Johan Vromans
-# Import from netgetopt.pl.
-# Turned into a decent module.
-# Added linkage argument.
-
-################ Configuration Section ################
-
-# Values for $order. See GNU getopt.c for details.
-($Getopt::Long::REQUIRE_ORDER,
- $Getopt::Long::PERMUTE,
- $Getopt::Long::RETURN_IN_ORDER) = (0..2);
-
-my $gen_prefix; # generic prefix (option starters)
-
-# Handle POSIX compliancy.
-if ( defined $ENV{"POSIXLY_CORRECT"} ) {
- $gen_prefix = "(--|-)";
- $Getopt::Long::autoabbrev = 0; # no automatic abbrev of options
- $Getopt::Long::getopt_compat = 0; # disallow '+' to start options
- $Getopt::Long::order = $Getopt::Long::REQUIRE_ORDER;
-}
-else {
- $gen_prefix = "(--|-|\\+)";
- $Getopt::Long::autoabbrev = 1; # automatic abbrev of options
- $Getopt::Long::getopt_compat = 1; # allow '+' to start options
- $Getopt::Long::order = $Getopt::Long::PERMUTE;
-}
-
-# Other configurable settings.
-$Getopt::Long::debug = 0; # for debugging
-$Getopt::Long::error = 0; # error tally
-$Getopt::Long::ignorecase = 1; # ignore case when matching options
-($Getopt::Long::version,
- $Getopt::Long::major_version,
- $Getopt::Long::minor_version) = '$Revision: 2.1 $ ' =~ /: ((\d+)\.(\d+))/;
-$Getopt::Long::version .= '*' if length('$Locker: $ ') > 12;
-
-################ Subroutines ################
-
-sub GetOptions {
-
- my @optionlist = @_; # local copy of the option descriptions
- my $argend = '--'; # option list terminator
- my %opctl; # table of arg.specs
- my $pkg = (caller)[0]; # current context
- # Needed if linkage is omitted.
- my %aliases; # alias table
- my @ret = (); # accum for non-options
- my %linkage; # linkage
- my $userlinkage; # user supplied HASH
- my $debug = $Getopt::Long::debug; # convenience
- my $genprefix = $gen_prefix; # so we can call the same module more
- # than once in differing environments
- $Getopt::Long::error = 0;
-
- print STDERR ("GetOptions $Getopt::Long::version",
- " [GetOpt::Long $Getopt::Long::VERSION] -- ",
- "called from package \"$pkg\".\n",
- " autoabbrev=$Getopt::Long::autoabbrev".
- ",getopt_compat=$Getopt::Long::getopt_compat",
- ",genprefix=\"$genprefix\"",
- ",order=$Getopt::Long::order",
- ",ignorecase=$Getopt::Long::ignorecase",
- ".\n")
- if $debug;
-
- # Check for ref HASH as first argument.
- $userlinkage = undef;
- if ( ref($optionlist[0]) && ref($optionlist[0]) eq 'HASH' ) {
- $userlinkage = shift (@optionlist);
- }
+=item bundling (default: reset)
- # See if the first element of the optionlist contains option
- # starter characters.
- if ( $optionlist[0] =~ /^\W+$/ ) {
- $genprefix = shift (@optionlist);
- # Turn into regexp.
- $genprefix =~ s/(\W)/\\$1/g;
- $genprefix = "[" . $genprefix . "]";
- }
+Setting this variable to a non-zero value will allow single-character
+options to be bundled. To distinguish bundles from long option names,
+long options must be introduced with B<--> and single-character
+options (and bundles) with B<->. For example,
- # Verify correctness of optionlist.
- %opctl = ();
- while ( @optionlist > 0 ) {
- my $opt = shift (@optionlist);
+ ps -vax --vax
- # Strip leading prefix so people can specify "-foo=i" if they like.
- $opt = $' if $opt =~ /^($genprefix)+/;
+would be equivalent to
- 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' ) {
- warn ("Option spec <> requires a reference to a subroutine\n");
- $Getopt::Long::error++;
- next;
- }
- $linkage{'<>'} = shift (@optionlist);
- next;
- }
+ ps -v -a -x --vax
- $opt =~ tr/A-Z/a-z/ if $Getopt::Long::ignorecase;
- if ( $opt !~ /^(\w+[-\w|]*)?(!|[=:][infse]@?)?$/ ) {
- warn ("Error in option spec: \"", $opt, "\"\n");
- $Getopt::Long::error++;
- next;
- }
- my ($o, $c, $a) = ($1, $2);
+provided "vax", "v", "a" and "x" have been defined to be valid
+options.
- if ( ! defined $o ) {
- # empty -> '-' option
- $opctl{$o = ''} = defined $c ? $c : '';
- }
- else {
- # Handle alias names
- my @o = split (/\|/, $o);
- $o = $o[0];
- foreach ( @o ) {
- if ( defined $c && $c eq '!' ) {
- $opctl{"no$_"} = $c;
- $c = '';
- }
- $opctl{$_} = defined $c ? $c : '';
- if ( defined $a ) {
- # Note alias.
- $aliases{$_} = $a;
- }
- else {
- # Set primary name.
- $a = $_;
- }
- }
- }
+Bundled options can also include a value in the bundle; for strings
+this value is the rest of the bundle, but integer and floating values
+may be combined in the bundle, e.g.
- # 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 $userlinkage->{$o} && ref($userlinkage->{$o}) ) {
- print STDERR ("=> found userlinkage for \"$o\": ",
- "$userlinkage->{$o}\n")
- if $debug;
- unshift (@optionlist, $userlinkage->{$o});
- }
- else {
- # Do nothing. Being undefined will be handled later.
- next;
- }
- }
- }
+ scale -h24w80
- # Copy the linkage. If omitted, link to global variable.
- if ( @optionlist > 0 && ref($optionlist[0]) ) {
- print STDERR ("=> link \"$o\" to $optionlist[0]\n")
- if $debug;
- if ( ref($optionlist[0]) eq 'SCALAR'
- || ref($optionlist[0]) eq 'ARRAY'
- || ref($optionlist[0]) eq 'CODE' ) {
- $linkage{$o} = shift (@optionlist);
- }
- else {
- warn ("Invalid option linkage for \"", $opt, "\"\n");
- $Getopt::Long::error++;
- }
- }
- else {
- # Link to global $opt_XXX variable.
- # Make sure a valid perl identifier results.
- my $ov = $o;
- $ov =~ s/\W/_/g;
- if ( $c =~ /@/ ) {
- print STDERR ("=> link \"$o\" to \@$pkg","::opt_$ov\n")
- if $debug;
- eval ("\$linkage{\$o} = \\\@".$pkg."::opt_$ov;");
- }
- else {
- print STDERR ("=> link \"$o\" to \$$pkg","::opt_$ov\n")
- if $debug;
- eval ("\$linkage{\$o} = \\\$".$pkg."::opt_$ov;");
- }
- }
- }
+is equivalent to
- # Bail out if errors found.
- return 0 if $Getopt::Long::error;
+ scale -h 24 -w 80
- # Sort the possible option names.
- my @opctl = sort(keys (%opctl)) if $Getopt::Long::autoabbrev;
+Note: resetting B<bundling> also resets B<bundling_override>.
- # Show if debugging.
- if ( $debug ) {
- my ($arrow, $k, $v);
- $arrow = "=> ";
- while ( ($k,$v) = each(%opctl) ) {
- print STDERR ($arrow, "\$opctl{\"$k\"} = \"$v\"\n");
- $arrow = " ";
- }
- }
+=item bundling_override (default: reset)
- my $opt; # current option
- my $arg; # current option value
- my $array; # current option is array typed
+If B<bundling_override> is set, bundling is enabled as with
+B<bundling> but now long option names override option bundles. In the
+above example, B<-vax> would be interpreted as the option "vax", not
+the bundle "v", "a", "x".
- # Process argument list
- while ( @ARGV > 0 ) {
+Note: resetting B<bundling_override> also resets B<bundling>.
- # >>> See also the continue block <<<
+B<Note:> Using option bundling can easily lead to unexpected results,
+especially when mixing long options and bundles. Caveat emptor.
- #### Get next argument ####
+=item ignore_case (default: set)
- $opt = shift (@ARGV);
- $arg = undef;
- my $optarg = undef;
- $array = 0;
- print STDERR ("=> option \"", $opt, "\"\n") if $debug;
+If set, case is ignored when matching options.
- #### Determine what we have ####
+Note: resetting B<ignore_case> also resets B<ignore_case_always>.
- # Double dash is option list terminator.
- if ( $opt eq $argend ) {
- # Finish. Push back accumulated arguments and return.
- unshift (@ARGV, @ret)
- if $Getopt::Long::order == $Getopt::Long::PERMUTE;
- return ($Getopt::Long::error == 0);
- }
-
- if ( $opt =~ /^$genprefix/ ) {
- # Looks like an option.
- $opt = $'; # option name (w/o prefix)
- # If it is a long opt, it may include the value.
- if (($& eq "--" || ($Getopt::Long::getopt_compat && $& eq "+"))
- && $opt =~ /^([^=]+)=/ ) {
- $opt = $1;
- $optarg = $';
- print STDERR ("=> option \"", $opt,
- "\", optarg = \"$optarg\"\n") if $debug;
- }
+=item ignore_case_always (default: reset)
- }
+When bundling is in effect, case is ignored on single-character
+options also.
- # Not an option. Save it if we $PERMUTE and don't have a <>.
- elsif ( $Getopt::Long::order == $Getopt::Long::PERMUTE ) {
- # Try non-options call-back.
- my $cb;
- if ( (defined ($cb = $linkage{'<>'})) ) {
- &$cb($opt);
- }
- else {
- push (@ret, $opt);
- }
- next;
- }
+Note: resetting B<ignore_case_always> also resets B<ignore_case>.
- # ...otherwise, terminate.
- else {
- # Push this one back and exit.
- unshift (@ARGV, $opt);
- return ($Getopt::Long::error == 0);
- }
+=item pass_through (default: reset)
- #### Look it up ###
+Unknown options are passed through in @ARGV instead of being flagged
+as errors. This makes it possible to write wrapper scripts that
+process only part of the user supplied options, and passes the
+remaining options to some other program.
- $opt =~ tr/A-Z/a-z/ if $Getopt::Long::ignorecase;
+This can be very confusing, especially when B<permute> is also set.
- my $tryopt = $opt;
- if ( $Getopt::Long::autoabbrev ) {
- my $pat;
-
- # Turn option name into pattern.
- ($pat = $opt) =~ s/(\W)/\\$1/g;
- # Look up in option names.
- my @hits = grep (/^$pat/, @opctl);
- print STDERR ("=> ", 0+@hits, " hits (@hits) with \"$pat\" ",
- "out of ", 0+@opctl, "\n") if $debug;
-
- # Check for ambiguous results.
- unless ( (@hits <= 1) || (grep ($_ eq $opt, @hits) == 1) ) {
- print STDERR ("Option ", $opt, " is ambiguous (",
- join(", ", @hits), ")\n");
- $Getopt::Long::error++;
- next;
- }
+=item prefix
- # Complete the option name, if appropriate.
- if ( @hits == 1 && $hits[0] ne $opt ) {
- $tryopt = $hits[0];
- print STDERR ("=> option \"$opt\" -> \"$tryopt\"\n")
- if $debug;
- }
- }
+The string that starts options. See also B<prefix_pattern>.
- my $type;
- unless ( defined ( $type = $opctl{$tryopt} ) ) {
- print STDERR ("Unknown option: ", $opt, "\n");
- $Getopt::Long::error++;
- next;
- }
- $opt = $tryopt;
- print STDERR ("=> found \"$type\" for ", $opt, "\n") if $debug;
+=item prefix_pattern
- #### Determine argument status ####
+A Perl pattern that identifies the strings that introduce options.
+Default is C<(--|-|\+)> unless environment variable
+POSIXLY_CORRECT has been set, in which case it is C<(--|-)>.
- # If it is an option w/o argument, we're almost finished with it.
- if ( $type eq '' || $type eq '!' ) {
- if ( defined $optarg ) {
- print STDERR ("Option ", $opt, " does not take an argument\n");
- $Getopt::Long::error++;
- }
- elsif ( $type eq '' ) {
- $arg = 1; # supply explicit value
- }
- else {
- substr ($opt, 0, 2) = ''; # strip NO prefix
- $arg = 0; # supply explicit value
- }
- next;
- }
+=item debug (default: reset)
- # Get mandatory status and type info.
- my $mand;
- ($mand, $type, $array) = $type =~ /^(.)(.)(@?)$/;
+Enable copious debugging output.
- # Check if there is an option argument available.
- if ( defined $optarg ? ($optarg eq '') : (@ARGV <= 0) ) {
+=back
- # Complain if this option needs an argument.
- if ( $mand eq "=" ) {
- print STDERR ("Option ", $opt, " requires an argument\n");
- $Getopt::Long::error++;
- }
- if ( $mand eq ":" ) {
- $arg = $type eq "s" ? '' : 0;
- }
- next;
- }
+=head1 OTHER USEFUL VARIABLES
- # Get (possibly optional) argument.
- $arg = defined $optarg ? $optarg : shift (@ARGV);
+=over 12
- #### Check if the argument is valid for this option ####
+=item $Getopt::Long::VERSION
- if ( $type eq "s" ) { # string
- # A mandatory string takes anything.
- next if $mand eq "=";
+The version number of this Getopt::Long implementation in the format
+C<major>.C<minor>. This can be used to have Exporter check the
+version, e.g.
- # An optional string takes almost anything.
- next if defined $optarg;
- next if $arg eq "-";
+ use Getopt::Long 3.00;
- # Check for option or option list terminator.
- if ($arg eq $argend ||
- $arg =~ /^$genprefix.+/) {
- # Push back.
- unshift (@ARGV, $arg);
- # Supply empty value.
- $arg = '';
- }
- next;
- }
+You can inspect $Getopt::Long::major_version and
+$Getopt::Long::minor_version for the individual components.
- if ( $type eq "n" || $type eq "i" ) { # numeric/integer
- if ( $arg !~ /^-?[0-9]+$/ ) {
- if ( defined $optarg || $mand eq "=" ) {
- print STDERR ("Value \"", $arg, "\" invalid for option ",
- $opt, " (number expected)\n");
- $Getopt::Long::error++;
- undef $arg; # don't assign it
- }
- else {
- # Push back.
- unshift (@ARGV, $arg);
- # Supply default value.
- $arg = 0;
- }
- }
- next;
- }
+=item $Getopt::Long::error
- if ( $type eq "f" ) { # fixed real number, int is also ok
- if ( $arg !~ /^-?[0-9.]+$/ ) {
- if ( defined $optarg || $mand eq "=" ) {
- print STDERR ("Value \"", $arg, "\" invalid for option ",
- $opt, " (real number expected)\n");
- $Getopt::Long::error++;
- undef $arg; # don't assign it
- }
- else {
- # Push back.
- unshift (@ARGV, $arg);
- # Supply default value.
- $arg = 0.0;
- }
- }
- next;
- }
+Internal error flag. May be incremented from a call-back routine to
+cause options parsing to fail.
- die ("GetOpt::Long internal error (Can't happen)\n");
- }
+=back
- continue {
- if ( defined $arg ) {
- $opt = $aliases{$opt} if defined $aliases{$opt};
+=head1 AUTHOR
- if ( defined $linkage{$opt} ) {
- print STDERR ("=> ref(\$L{$opt}) -> ",
- ref($linkage{$opt}), "\n") if $debug;
+Johan Vromans E<lt>jvromans@squirrel.nlE<gt>
- if ( ref($linkage{$opt}) eq 'SCALAR' ) {
- print STDERR ("=> \$\$L{$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{$opt}) eq 'CODE' ) {
- print STDERR ("=> &L{$opt}(\"$opt\", \"$arg\")\n")
- if $debug;
- &{$linkage{$opt}}($opt, $arg);
- }
- else {
- print STDERR ("Invalid REF type \"", ref($linkage{$opt}),
- "\" in linkage\n");
- die ("Getopt::Long -- internal error!\n");
- }
- }
- # No entry in linkage means entry in userlinkage.
- elsif ( $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} = [$arg];
- }
- }
- else {
- print STDERR ("=>\$L{$opt} = \"$arg\"\n") if $debug;
- $userlinkage->{$opt} = $arg;
- }
- }
- }
+=head1 COPYRIGHT AND DISCLAIMER
- # Finish.
- if ( $Getopt::Long::order == $Getopt::Long::PERMUTE ) {
- # Push back accumulated arguments
- unshift (@ARGV, @ret) if @ret > 0;
- }
+This program is Copyright 1990,1998 by Johan Vromans.
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+as published by the Free Software Foundation; either version 2
+of the License, or (at your option) any later version.
- return ($Getopt::Long::error == 0);
-}
+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.
-################ Package return ################
+If you do not have a copy of the GNU General Public License write to
+the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+MA 02111-1307, USA.
-# Returning 1 is so boring...
-$Getopt::Long::major_version * 1000 + $Getopt::Long::minor_version;
+=cut
projects / p5sagit/p5-mst-13.2.git / blobdiff