# GetOpt::Long.pm -- POSIX compatible options parsing
-# RCS Status : $Id: GetoptLong.pm,v 2.1 1996/02/02 20:24:35 jv Exp $
+# RCS Status : $Id: GetoptLong.pm,v 2.6 1997-01-11 13:12:01+01 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: Sat Jan 11 13:11:35 1997
+# Update Count : 506
# Status : Released
package Getopt::Long;
@ISA = qw(Exporter);
@EXPORT = qw(&GetOptions $REQUIRE_ORDER $PERMUTE $RETURN_IN_ORDER);
-$VERSION = sprintf("%d.%02d", q$Revision: 2.1 $ =~ /(\d+)\.(\d+)/);
+$VERSION = sprintf("%d.%02d", '$Revision: 2.6 $ ' =~ /(\d+)\.(\d+)/);
+use vars qw($autoabbrev $getopt_compat $ignorecase $bundling $order
+ $passthrough $error $debug
+ $REQUIRE_ORDER $PERMUTE $RETURN_IN_ORDER
+ $VERSION $major_version $minor_version);
use strict;
=head1 NAME
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
=over 8
-=item <none>
+=item E<lt>noneE<gt>
Option does not take an argument.
The option variable will be set to 1.
$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,
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.
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
+of this option. If no linkage is specified, options "foo", "bar" and
"blech" all will set $opt_foo.
Option names may be abbreviated to uniqueness, depending on
=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.
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 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 variable $Getopt::Long::getopt_compat is set to a
-non-zero value, options that start with "+" may also include their
+non-zero value, 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.
--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);
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);
$RETURN_IN_ORDER is not supported by GetOptions().
-=item $Getopt::Long::ignorecase
+=item $Getopt::Long::bundling
+
+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,
+
+ ps -vax --vax
+
+would be equivalent to
+
+ ps -v -a -x --vax
+
+provided "vax", "v", "a" and "x" have been defined to be valid
+options.
+
+Bundled options can also include a value in the bundle; this value has
+to be the last part of the bundle, e.g.
+
+ scale -h24 -w80
+
+is equivalent to
+
+ scale -h 24 -w 80
-Ignore case when matching options. Default is 1.
+B<Note:> Using option bundling can easily lead to unexpected results,
+especially when mixing long options and bundles. Caveat emptor.
+
+=item $Getopt::Long::ignorecase
+
+Ignore case when matching options. Default is 1. When bundling is in
+effect, case is ignored on single-character options only if
+$Getopt::Long::ignorecase is greater than 1.
+
+=item $Getopt::Long::passthrough
+
+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.
+
+This can be very confusing, especially when $Getopt::Long::order is
+set to $PERMUTE.
=item $Getopt::Long::VERSION
################ 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
# 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,
- $Getopt::Long::RETURN_IN_ORDER) = (0..2);
+($REQUIRE_ORDER, $PERMUTE, $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;
+ $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 {
$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;
+ $autoabbrev = 1; # automatic abbrev of options
+ $bundling = 0; # bundling off by default
+ $getopt_compat = 1; # allow '+' to start options
+ $order = $PERMUTE;
}
# Other configurable settings.
-$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;
+$debug = 0; # for debugging
+$error = 0; # error tally
+$ignorecase = 1; # ignore case when matching options
+$passthrough = 0; # leave unrecognized options alone
+($major_version, $minor_version) = $VERSION =~ /^(\d+)\.(\d+)/;
+
+use vars qw($genprefix %opctl @opctl %bopctl $opt $arg $argend $array);
+use vars qw(%aliases $hash $key);
################ Subroutines ################
sub GetOptions {
my @optionlist = @_; # local copy of the option descriptions
- my $argend = '--'; # option list terminator
- my %opctl; # table of arg.specs
+ local ($argend) = '--'; # option list terminator
+ local (%opctl); # table of arg.specs (long and abbrevs)
+ local (%bopctl); # table of arg.specs (bundles)
my $pkg = (caller)[0]; # current context
# Needed if linkage is omitted.
- my %aliases; # alias table
+ local (%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 = $gen_prefix; # so we can call the same module more
+ local ($genprefix) = $gen_prefix; # so we can call the same module more
# than once in differing environments
- $Getopt::Long::error = 0;
+ $error = 0;
- print STDERR ("GetOptions $Getopt::Long::version",
- " [GetOpt::Long $Getopt::Long::VERSION] -- ",
+ print STDERR ('GetOptions $Revision: 2.6 $ ',
+ "[GetOpt::Long $Getopt::Long::VERSION] -- ",
"called from package \"$pkg\".\n",
- " autoabbrev=$Getopt::Long::autoabbrev".
- ",getopt_compat=$Getopt::Long::getopt_compat",
+ " (@ARGV)\n",
+ " autoabbrev=$autoabbrev".
+ ",bundling=$bundling",
+ ",getopt_compat=$getopt_compat",
+ ",order=$order",
+ ",\n ignorecase=$ignorecase",
+ ",passthrough=$passthrough",
",genprefix=\"$genprefix\"",
- ",order=$Getopt::Long::order",
- ",ignorecase=$Getopt::Long::ignorecase",
".\n")
if $debug;
# 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.
+ # Strip leading prefix so people can specify "--foo=i" if they like.
$opt = $' if $opt =~ /^($genprefix)+/;
if ( $opt eq '<>' ) {
unless ( @optionlist > 0
&& ref($optionlist[0]) && ref($optionlist[0]) eq 'CODE' ) {
warn ("Option spec <> requires a reference to a subroutine\n");
- $Getopt::Long::error++;
+ $error++;
next;
}
$linkage{'<>'} = shift (@optionlist);
next;
}
- $opt =~ tr/A-Z/a-z/ if $Getopt::Long::ignorecase;
- if ( $opt !~ /^(\w+[-\w|]*)?(!|[=:][infse]@?)?$/ ) {
+ if ( $opt !~ /^(\w+[-\w|]*)?(!|[=:][infse][@%]?)?$/ ) {
warn ("Error in option spec: \"", $opt, "\"\n");
- $Getopt::Long::error++;
+ $error++;
next;
}
my ($o, $c, $a) = ($1, $2);
+ $c = '' unless defined $c;
if ( ! defined $o ) {
# empty -> '-' option
- $opctl{$o = ''} = defined $c ? $c : '';
+ $opctl{$o = ''} = $c;
}
else {
# Handle alias names
my @o = split (/\|/, $o);
- $o = $o[0];
+ 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 ( defined $c && $c eq '!' ) {
- $opctl{"no$_"} = $c;
- $c = '';
+ if ( $bundling && length($_) == 1 ) {
+ $_ = lc ($_) if $ignorecase > 1;
+ if ( $c eq '!' ) {
+ $opctl{"no$_"} = $c;
+ warn ("Ignoring '!' modifier for short option $_\n");
+ $c = '';
+ }
+ $bopctl{$_} = $c;
+ }
+ else {
+ $_ = lc ($_) if $ignorecase;
+ if ( $c eq '!' ) {
+ $opctl{"no$_"} = $c;
+ $c = '';
+ }
+ $opctl{$_} = $c;
}
- $opctl{$_} = defined $c ? $c : '';
if ( defined $a ) {
# Note alias.
$aliases{$_} = $a;
$a = $_;
}
}
+ $o = $linko;
}
# If no linkage is supplied in the @optionlist, copy it from
if ( @optionlist > 0 && ref($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' ) {
+ if ( ref($optionlist[0]) =~ /^(SCALAR|CODE)$/ ) {
+ $linkage{$o} = shift (@optionlist);
+ }
+ elsif ( ref($optionlist[0]) =~ /^(ARRAY)$/ ) {
+ $linkage{$o} = shift (@optionlist);
+ $opctl{$o} .= '@' unless $opctl{$o} =~ /\@$/;
+ }
+ elsif ( ref($optionlist[0]) =~ /^(HASH)$/ ) {
$linkage{$o} = shift (@optionlist);
+ $opctl{$o} .= '%' unless $opctl{$o} =~ /\%$/;
}
else {
warn ("Invalid option linkage for \"", $opt, "\"\n");
- $Getopt::Long::error++;
+ $error++;
}
}
else {
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;
}
# Bail out if errors found.
- return 0 if $Getopt::Long::error;
+ return 0 if $error;
- # Sort the possible option names.
- my @opctl = sort(keys (%opctl)) if $Getopt::Long::autoabbrev;
+ # Sort the possible long option names.
+ local (@opctl) = sort(keys (%opctl)) if $autoabbrev;
- # Show if debugging.
+ # Show the options tables if debugging.
if ( $debug ) {
my ($arrow, $k, $v);
$arrow = "=> ";
print STDERR ($arrow, "\$opctl{\"$k\"} = \"$v\"\n");
$arrow = " ";
}
+ $arrow = "=> ";
+ while ( ($k,$v) = each(%bopctl) ) {
+ print STDERR ($arrow, "\$bopctl{\"$k\"} = \"$v\"\n");
+ $arrow = " ";
+ }
}
- my $opt; # current option
- my $arg; # current option value
- my $array; # current option is array typed
+ local ($opt); # current option
+ local ($arg); # current option value, if any
+ local ($array); # current option is array typed
+ local ($hash); # current option is hash typed
+ local ($key); # hash key for a hash option
# Process argument list
while ( @ARGV > 0 ) {
- # >>> See also the continue block <<<
-
#### Get next argument ####
$opt = shift (@ARGV);
$arg = undef;
- my $optarg = undef;
- $array = 0;
+ $array = $hash = 0;
print STDERR ("=> option \"", $opt, "\"\n") if $debug;
#### Determine what we have ####
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 $order == $PERMUTE;
+ return ($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;
- }
+ my $tryopt = $opt;
+ # find_option operates on the GLOBAL $opt and $arg!
+ if ( &find_option ) {
+
+ # find_option 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{$opt}) eq 'SCALAR' ) {
+ print STDERR ("=> \$\$L{$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");
+ 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];
+ }
+ }
+ elsif ( $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 => $arg};
+ }
+ }
+ else {
+ print STDERR ("=>\$L{$opt} = \"$arg\"\n") if $debug;
+ $userlinkage->{$opt} = $arg;
+ }
+ }
}
# Not an option. Save it if we $PERMUTE and don't have a <>.
- elsif ( $Getopt::Long::order == $Getopt::Long::PERMUTE ) {
+ elsif ( $order == $PERMUTE ) {
# Try non-options call-back.
my $cb;
if ( (defined ($cb = $linkage{'<>'})) ) {
- &$cb($opt);
+ &$cb($tryopt);
}
else {
- push (@ret, $opt);
+ print STDERR ("=> saving \"$tryopt\" ",
+ "(not an option, may permute)\n") if $debug;
+ push (@ret, $tryopt);
}
next;
}
# ...otherwise, terminate.
else {
# Push this one back and exit.
- unshift (@ARGV, $opt);
- return ($Getopt::Long::error == 0);
+ unshift (@ARGV, $tryopt);
+ return ($error == 0);
}
- #### Look it up ###
+ }
- $opt =~ tr/A-Z/a-z/ if $Getopt::Long::ignorecase;
+ # Finish.
+ if ( $order == $PERMUTE ) {
+ # Push back accumulated arguments
+ print STDERR ("=> restoring \"", join('" "', @ret), "\"\n")
+ if $debug && @ret > 0;
+ unshift (@ARGV, @ret) if @ret > 0;
+ }
- 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");
- $Getopt::Long::error++;
- next;
- }
+ return ($error == 0);
+}
- # Complete the option name, if appropriate.
- if ( @hits == 1 && $hits[0] ne $opt ) {
- $tryopt = $hits[0];
- print STDERR ("=> option \"$opt\" -> \"$tryopt\"\n")
- if $debug;
- }
- }
+sub find_option {
- 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;
+ return 0 unless $opt =~ /^$genprefix/;
- #### Determine argument status ####
+ $opt = $';
+ my ($starter) = $&;
- # 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
+ 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)
+ && $opt =~ /^([^=]+)=/ ) {
+ $opt = $1;
+ $optarg = $';
+ 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)
+
+ 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
+ }
+
+ # 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 (/^$pat/, @opctl);
+ print STDERR ("=> ", scalar(@hits), " hits (@hits) with \"$pat\" ",
+ "out of ", scalar(@opctl), "\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;
}
- else {
- substr ($opt, 0, 2) = ''; # strip NO prefix
- $arg = 0; # supply explicit value
+ # Now see if it really is ambiguous.
+ unless ( keys(%hit) == 1 ) {
+ return 0 if $passthrough;
+ print STDERR ("Option ", $opt, " is ambiguous (",
+ join(", ", @hits), ")\n");
+ $error++;
+ undef $opt;
+ return 1;
}
- next;
+ @hits = keys(%hit);
}
- # Get mandatory status and type info.
- my $mand;
- ($mand, $type, $array) = $type =~ /^(.)(.)(@?)$/;
+ # 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;
+ }
+ }
- # Check if there is an option argument available.
- if ( defined $optarg ? ($optarg eq '') : (@ARGV <= 0) ) {
+ # Map to all lowercase if ignoring case.
+ elsif ( $ignorecase ) {
+ $tryopt = lc ($opt);
+ }
- # 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;
+ # Check validity by fetching the info.
+ my $type = $optbl->{$tryopt};
+ unless ( defined $type ) {
+ return 0 if $passthrough;
+ warn ("Unknown option: ", $opt, "\n");
+ $error++;
+ return 1;
+ }
+ # 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 '!' ) {
+ if ( defined $optarg ) {
+ return 0 if $passthrough;
+ print STDERR ("Option ", $opt, " does not take an argument\n");
+ $error++;
+ undef $opt;
+ }
+ elsif ( $type eq '' ) {
+ $arg = 1; # supply explicit value
+ }
+ else {
+ substr ($opt, 0, 2) = ''; # strip NO prefix
+ $arg = 0; # supply explicit value
}
+ unshift (@ARGV, $starter.$rest) if defined $rest;
+ return 1;
+ }
- # Get (possibly optional) argument.
- $arg = defined $optarg ? $optarg : shift (@ARGV);
+ # Get mandatory status and type info.
+ my $mand;
+ ($mand, $type, $array, $hash) = $type =~ /^(.)(.)(@?)(%?)$/;
+
+ # 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;
+ print STDERR ("Option ", $opt, " requires an argument\n");
+ $error++;
+ undef $opt;
+ }
+ if ( $mand eq ":" ) {
+ $arg = $type eq "s" ? '' : 0;
+ }
+ return 1;
+ }
- #### Check if the argument is valid for this option ####
+ # Get (possibly optional) argument.
+ $arg = (defined $rest ? $rest
+ : (defined $optarg ? $optarg : shift (@ARGV)));
- if ( $type eq "s" ) { # string
- # A mandatory string takes anything.
- next if $mand eq "=";
+ # Get key if this is a "name=value" pair for a hash option.
+ $key = undef;
+ if ($hash && defined $arg) {
+ ($key, $arg) = ($arg =~ /=/o) ? ($`, $') : ($arg, 1);
+ }
- # An optional string takes almost anything.
- next if defined $optarg;
- next if $arg eq "-";
+ #### Check if the argument is valid for this option ####
- # Check for option or option list terminator.
- if ($arg eq $argend ||
- $arg =~ /^$genprefix.+/) {
- # Push back.
- unshift (@ARGV, $arg);
- # Supply empty value.
- $arg = '';
- }
- next;
- }
+ if ( $type eq "s" ) { # string
+ # A mandatory string takes anything.
+ return 1 if $mand eq "=";
- 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;
+ # An optional string takes almost anything.
+ return 1 if defined $optarg || defined $rest;
+ return 1 if $arg eq "-"; # ??
+
+ # Check for option or option list terminator.
+ if ($arg eq $argend ||
+ $arg =~ /^$genprefix.+/) {
+ # Push back.
+ unshift (@ARGV, $arg);
+ # Supply empty value.
+ $arg = '';
}
+ }
- 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;
- }
+ elsif ( $type eq "n" || $type eq "i" ) { # numeric/integer
+ if ( $arg !~ /^-?[0-9]+$/ ) {
+ if ( defined $optarg || $mand eq "=" ) {
+ return 0 if $passthrough;
+ print STDERR ("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;
}
- next;
}
-
- die ("GetOpt::Long internal error (Can't happen)\n");
}
- continue {
- 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{$opt}) eq 'SCALAR' ) {
- print STDERR ("=> \$\$L{$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];
- }
+ elsif ( $type eq "f" ) { # real number, int is also ok
+ if ( $arg !~ /^-?[0-9.]+([eE]-?[0-9]+)?$/ ) {
+ if ( defined $optarg || $mand eq "=" ) {
+ return 0 if $passthrough;
+ print STDERR ("Value \"", $arg, "\" invalid for option ",
+ $opt, " (real number expected)\n");
+ $error++;
+ undef $opt;
+ # Push back.
+ unshift (@ARGV, $starter.$rest) if defined $rest;
}
else {
- print STDERR ("=>\$L{$opt} = \"$arg\"\n") if $debug;
- $userlinkage->{$opt} = $arg;
+ # Push back.
+ unshift (@ARGV, defined $rest ? $starter.$rest : $arg);
+ # Supply default value.
+ $arg = 0.0;
}
}
}
-
- # Finish.
- if ( $Getopt::Long::order == $Getopt::Long::PERMUTE ) {
- # Push back accumulated arguments
- unshift (@ARGV, @ret) if @ret > 0;
+ else {
+ die ("GetOpt::Long internal error (Can't happen)\n");
}
-
- return ($Getopt::Long::error == 0);
+ return 1;
}
################ Package return ################
-# Returning 1 is so boring...
-$Getopt::Long::major_version * 1000 + $Getopt::Long::minor_version;
+1;
projects / p5sagit/p5-mst-13.2.git / blobdiff