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#! @PERL@ -w
# This script is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
#
# See the COPYING and AUTHORS files for more details.
use strict;
my $opts;
my @words;
my $found_sep = 0;
foreach my $arg (@ARGV) {
if ($arg eq '--') {
$found_sep = 1;
}
else {
if (!$found_sep) {
$opts .= ' ' . $arg;
}
else {
push @words, $arg;
}
}
}
# there is no reason to parse
# the opts if there are no args.
if (! length(@words)) {
print ' -- ';
exit;
}
my $short_opts = '';
my @long_opts;
# nothing fancy to see here; this script provides minimal compatibility
# with the getopt from util-linux until a cross platform binary exists.
if ($opts =~ /^\s*-o ([a-zA-Z:]*)?(\s+--long .*)*/) {
$short_opts = $1;
if ($2) {
my $long_opts = $2;
$long_opts =~ s/^\s*--long //g;
$long_opts =~ s/ --long /,/g;
@long_opts = split(/,/,$long_opts);
}
}
my @barewords;
my @options;
# set the previous option name when a param is required
my $need_param;
foreach my $word (@words) {
# allow '-' to be an option value
if (!$need_param && $word !~ /^-./) {
push @barewords, $word;
next;
}
if ($need_param) {
die "expecting param for $need_param" if $word =~ /^-./;
push @options, '"'.$word.'"';
$need_param = undef;
next;
}
# process short options
if ($word =~ s/^-([^-])/$1/) {
my @letters = reverse(split(//,$word));
while (@letters) {
my $letter = pop @letters;
my $found = grep(/$letter/, $short_opts);
push @options, '-'.$letter;
die "illegal option: $letter" if !$found;
if (grep(/$letter:/, $short_opts)) {
if (scalar(@letters) == 0) {
$need_param = $letter;
} else {
# short options can have numerical args
# embedded in the short option list: -UO
die "unexpected character after option $letter"
if ($letters[$#letters] !~ /[0-9]/);
my @digits;
while (scalar(@letters) && ($letters[$#letters] =~ /[0-9]/)) {
push @digits, pop @letters;
}
push @options, join('',reverse @digits);
}
}
}
}
# process long options
if ($word =~ s/^--//) {
my $param = '';
if ($word =~ /(.*)=(.*)/) {
$word = $1;
$param = $2;
}
my ($found) = grep(/^$word:?$/,@long_opts);
die "illegal option: $word" if !$found;
die "$word: unexpected paramater $param" if $found !~ /:$/ && $param ne '';
$need_param = $word if $found =~ /:$/ && $param eq '';
push @options, "--$word";
push @options, '"'."$param".'"' if $param;
}
}
print "@options -- @barewords"
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