GIF89a=( õ' 7IAXKgNgYvYx\%wh…hŽth%ˆs%—x¨}9®Œ©€&©‰%¶†(¹–.¹5·œD¹&Çš)ÇŸ5ǘ;Í£*È¡&Õ²)ׯ7×µ<Ñ»4ï°3ø‘HÖ§KͯT÷¨Yÿšqÿ»qÿÔFØ !ù ' !ÿ NETSCAPE2.0 , =( þÀ“pH,È¤rÉl:ŸÐ¨tJ­Z¯Ø¬vËíz¿à°xL.›Ïè´zÍn»ßð¸|N¯Ûïø¼~Ïïûÿ€‚ƒ„…†‡ˆ‰Š‹ŒŽ‘’“”•–—˜™š›œžŸ ¡¢£¤¥¦§gª«ªE¯°¨¬ª±²Œ¹º¹E¾­”´ÂB¶¯ §Åȸ»ÑD¾¿Á•ÄÅ®° ÝH¾ÒLÀÆDÙ«D¶BÝïðÀ¾DÑÑÔTÌÍíH òGö¨A RÎڐ |¥ ٭&ºìE8œ¹kGÔAÞpx­a¶­ã R2XB®åE8I€Õ6Xî:vT)äžþÀq¦è³¥ì仕F~%xñ  4#ZÔ‰O|-4Bs‘X:= QÉ œš lºÒyXJŠGȦ|s hÏíK–3l7·B|¥$'7Jީܪ‰‡àá”Dæn=Pƒ ¤Òëí‰`䌨ljóá¯Éüv>á–Á¼5 ½.69ûϸd«­ºÀûnlv©‹ªîf{¬ÜãPbŸ  l5‘Ž¯pß ´ ˜3aÅùäI«O’ý·‘áÞ‡˜¾Æ‚ÙÏiÇÿ‹Àƒ #öó)pâš Þ½ ‘Ý{ó)vmÞü%D~ 6f s}ŃƒDØW Eþ`‡þ À…L8xá†ç˜{)x`X/> Ì}mø‚–RØ‘*|`D=‚Ø_ ^ð5 !_…'aä“OÚ—7âcð`D”Cx`ÝÂ¥ä‹éY¹—F¼¤¥Š?¡Õ™ n@`} lď’ÄÉ@4>ñd œ à‘vÒxNÃ×™@žd=ˆgsžG±æ ´²æud &p8Qñ)ˆ«lXD©øÜéAžHìySun jª×k*D¤LH] †¦§C™Jä–´Xb~ʪwStŽ6K,°£qÁœ:9ت:¨þªl¨@¡`‚ûÚ ».Û¬¯t‹ÆSÉ[:°=Š‹„‘Nåû”Ìî{¿ÂA ‡Rà›ÀÙ6úë°Ÿð0Ä_ ½;ÃϱîÉì^ÇÛÇ#Ëë¼ôº!±Ä˜íUîÅÇ;0L1óÁµö«p% AÀºU̬ݵ¼á%霼€‡¯Á~`ÏG¯»À× ­²± =4ªnpð3¾¤³¯­ü¾¦îuÙuµÙ®|%2ÊIÿür¦#0·ÔJ``8È@S@5ê¢ ö×Þ^`8EÜ]ý.뜃Âç 7 ú ȉÞj œ½Dç zý¸iþœÑÙûÄë!ˆÞÀl§Ïw‹*DçI€nEX¯¬¼ &A¬Go¼QföõFç°¯;é¦÷îŽêJ°îúôF5¡ÌQ|îúöXªæ»TÁÏyñêï]ê² o óÎC=öõ›ÒÓPB@ D×½œä(>èCÂxŽ`±«Ÿ–JЀ»Û á¤±p+eE0`ëŽ`A Ú/NE€Ø†À9‚@¤à H½7”à‡%B‰`Àl*ƒó‘–‡8 2ñ%¸ —€:Ù1Á‰E¸àux%nP1ð!‘ðC)¾P81lÑɸF#ˆ€{´âé°ÈB„0>±û °b¡Š´±O‚3È–Ù()yRpbµ¨E.Z‘D8ÊH@% òŒx+%Ù˜Æcü »¸˜fõ¬b·d`Fê™8èXH"ÉÈ-±|1Ô6iI, 2““¬$+](A*jÐ QTÂo‰.ÛU슬Œã„Ž`¯SN¡–¶Äåyše¯ª’­¬‚´b¦Éož œ)åyâ@Ì®3 ÎtT̉°&Ø+žLÀf"Ø-|žçÔ>‡Ðv¦Ðžì\‚ Q1)Ž@Žh#aP72”ˆ™¨$‚ !ù " , =( …7IAXG]KgNgYvYxR"k\%w]'}hŽth%ˆg+ˆs%—r.—m3šx3˜x¨}9®€&©€+¨‡7§‰%¶†(¹–.¹œD¹&ǘ;Í•&ײ)×»4ïÌ6ò§KÍ þ@‘pH,È¤rÉl:ŸÐ¨tJ­Z¯Ø¬vËíz¿à°xL.›Ïè´zÍn»ßð¸|N¯Ûïø¼~Ïïûÿ€‚ƒ„…†‡ˆ‰Š‹ŒŽ‘’“”•–—˜™š›œžŸ ¡¢£¤¥¦§g «¬ E ±± ¨­¶°ººE Á´”·®C¬²§Ç¶Œ»ÓDÃÕƷ¯Ê±H½ºM×ÁGÚ¬D¶BËÁ½î½DÓôTÏÛßîG»ôõC×CÌ l&âž:'òtU³6ɹ#·Ø)€'Ü.6±&ëÍÈ» K(8p0N?!æ2"ÛˆNIJX>R¼ÐO‚M '¡¨2¸*Ÿþ>#n↠å@‚<[:¡Iïf’ ¤TÚ˘CdbÜÙ“[«ŽEú5MBo¤×@€`@„€Êt W-3 ¶Ÿ¡BíêäjIÝ…Eò9[T…$íêﯧ„…•s»Óȳ¹€ÅÚdc®UUρ#±Ùïldj?´í¼²`\ŽÁðÞu|3'ÖŒ]ë6 ¶S#²‡˜FKLÈ *N E´‘áäŠ$˜›eÄYD„ºq«.è촁ƒs \-ÔjA 9²õ÷å- üúM[Âx(ís÷ì®x€|í¡Ù’p¦‚ ŽkÛTÇDpE@WÜ ²Ç]kŠ1¨ þ€·Yb ÓÁ‰l°*n0 ç™—žzBdОu¾7ĉBl€â‰-ºx~|UåU‰  h*Hœ|e"#"?vpÄiŠe6^ˆ„+qâŠm8 #VÇá ‘å–ÄV„œ|Šè•m"сœn|@›U¶ÆΞ—Špb¥G¨ED”€±Úê2FÌIç? >Éxå Œ± ¡¤„%‘žjŸ‘ꄯ<Ìaà9ijÐ2˜D¦È&›†Z`‚å]wþ¼Â:ç6àB¤7eFJ|õÒ§Õ,¨äàFÇ®cS·Ê¶+B°,‘Þ˜ºNûãØ>PADÌHD¹æž«ÄÀnÌ¥}­#Ë’ë QÀÉSÌÂÇ2ÌXÀ{æk²lQÁ2«ÊðÀ¯w|2Í h‹ÄÂG€,m¾¶ë3ÐÙ6-´ÅE¬L°ÆIij*K½ÀÇqï`DwVÍQXœÚÔpeœ±¬Ñ q˜§Tœ½µƒ°Œìu Â<¶aØ*At¯lmEØ ü ôÛN[P1ÔÛ¦­±$ÜÆ@`ùåDpy¶yXvCAyåB`ŽD¶ 0QwG#¯ æš[^Äþ $ÀÓÝǦ{„L™[±úKÄgÌ;ï£S~¹ìGX.ôgoT.»åˆ°ùŸûù¡?1zö¦Ÿž:ÅgÁ|ìL¹ „®£œŠ‚à0œ]PÁ^p F<"•ç?!,ñ‡N4—…PÄ Á„ö¨Û:Tè@hÀ‹%táÿ:ø-žI<`þ‹p I….)^ 40D#p@ƒj4–؀:²‰1Øâr˜¼F2oW¼#Z†;$Q q” ‘ ÂK¦ñNl#29 !’F@¥Bh·ᏀL!—XFóLH‘Kh¤.«hE&JòG¨¥<™WN!€ÑÙÚˆY„@†>Œž19J" 2,/ &.GXB%ÌRÈ9B6¹W]’î×ÔW¥’IÎ$ ñ‹ÓŒE8YÆ ¼³™ñA5“à®Q.aŸB€&Ø©³ JÁ—! ¦t)K%tœ-¦JF bòNMxLôþ)ÐR¸Ð™‘ èÝ6‘O!THÌ„HÛ ‰ !ù ) , =( …AXKgNgYvYxR"k\%wh…hŽh%ˆg+ˆs%—r.—x3˜x¨}9®€&©€+¨Œ,©‡7§‰%¶†(¹–.¹5·&Çš)ǘ;Í•&×£*Ȳ)ׯ7×»4ï°3øÌ6ò‘HÖ§KÍ»Hó¯T÷¨Yÿ»qÿÇhÿ þÀ”pH,È¤rÉl:ŸÐ¨tJ­Z¯Ø¬vËíz¿à°xL.›Ïè´zÍn»ßð¸|N¯Ûïø¼~Ïïûÿ€‚ƒ„…†‡ˆ‰Š‹ŒŽ‘’“”•–—˜™š›œžŸ ¡¢£¤¥¦§g ª« E$±²¨ª­ · °²½$E$ÂÕ««D· Í ¿¦Ç¶¸ÌŒ¾³CÃÅÆ E ééH½MÛÂGâªD­ çBêêϾD²ÒaÀà€Š1r­ðÓ¤ ÔožzU!L˜C'¾yW½UGtäÇïÙllê0×àÂuGþ)AÀs[þ·xì ÁxO%ƒûX2ó—  P£n›R/¡ÑšHše+êDm?# —‘Ç£6¡8íJ¡ŸâDiäªM¥Ö„ôj“¬¹£5oQ7°- <‡ *´lãÓŒ2r/a!l)dÈ A™ÈE¢ôÔ͆…ð ;Ö˜c ¡%ß‚’Ùˆâ¸b½—pe~C"BíëÚHïeF2§æŠ8qb t_`urŠeü wÅu3êæPv§h•"ß`íÍxçLĹÜÖ3á  ~Öº“®›¸ÏMDfJÙ °„ÛµáWõ%§œ‚à©–‚X Ó؁)@®Ñ›Eþ´wëuÅSxb8y\mÖzœ¥§ZbºE—ÂLªÌw!y(>¡™wú=Ç|ÅÝs¢d €CÁW)HÜcC$€L Ä7„r.á\{)@ð` @ äXÈ$PD” `šaG:§æˆOˆ72EÐamn]ù"ŒcÊxÑŒ° &dR8`g«iÙŸLR!¦P …d’ä¡“¦ðÎTƒ¦ià|À _ ¥ Qi#¦Šg›Æ ›noMµ ›V ã£)p ç£ÎW…š=Âeªk§†j„ ´®1ß²sÉxéW«jšl|0¯B0Û, \jÛ´›6±¬¶C ÛíWþï|ëÙ‹¸ñzĸV {ì;Ýñn¼òVˆm³I¼³.Ðã¤PN¥ ²µ¼„µCã+¹ÍByî£Ñ¾HŸ›ëê 7ìYÆFTk¨SaoaY$Dµœìï¿Ã29RÈkt Çïfñ ÇÒ:ÀÐSp¹3ÇI¨â¥DZÄ ü9Ïýögñ½­uÔ*3)O‘˜Ö[_hv ,àî×Et Ÿé¶BH€ Õ[ü±64M@ÔSÌM7dÐl5-ÄÙU܍´©zߌ3Ô€3ž„ „ ¶ÛPô½5×g› êÚ˜kN„Ý…0Îj4€Ìë°“#{þÕ3S2çKÜ'ợlø¼Ú2K{° {Û¶?žm𸧠ËI¼nEò='êüóºè^üæÃ_Û=°óž‚ì#Oý¿Í'¡½áo..ÏYìnüñCœO±Áa¿¢Kô½o,üÄËbö²çºíï{ËC Ú— "”Ï{ËK ÍÒw„õ±Oz dÕ¨à:$ ƒô—«v»] A#ð «€¿šéz)Rx׿ˆ¥‚d``èw-îyÏf×K!ð€þ­Ð|ìPľ„=Ì`ý(f” 'Pa ¥ÐBJa%Ðâf§„%Š¡}FàáÝ×6>ÉäŠG"éŽè=ø!oŠ°^FP¼Ø©Q„ÀCÙÁ`(Ž\ÄÝ® ©Â$<n@dÄ E#ììUÒI! ‚#lù‹`k¦ÐÇ'Rró’ZýNBÈMF Í[¤+‹ðɈ-áwj¨¥þ8¾rá ,VÂh„"|½œ=×G_¦Ñ™EØ 0i*%̲˜Æda0mV‚k¾)›;„&6 p>ÓjK “¦Ç# âDÂ:ûc?:R Ó¬fÞéI-Ì“•Ã<ä=™Ï7˜3œ¨˜c2ŒW ,ˆ”8(T™P‰F¡Jhç"‚ ; 403WebShell
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Current File : /usr/local/lib64/perl5/version/vpp.pm
package charstar;
# a little helper class to emulate C char* semantics in Perl
# so that prescan_version can use the same code as in C

use overload (
    '""'	=> \&thischar,
    '0+'	=> \&thischar,
    '++'	=> \&increment,
    '--'	=> \&decrement,
    '+'		=> \&plus,
    '-'		=> \&minus,
    '*'		=> \&multiply,
    'cmp'	=> \&cmp,
    '<=>'	=> \&spaceship,
    'bool'	=> \&thischar,
    '='		=> \&clone,
);

sub new {
    my ($self, $string) = @_;
    my $class = ref($self) || $self;

    my $obj = {
	string  => [split(//,$string)],
	current => 0,
    };
    return bless $obj, $class;
}

sub thischar {
    my ($self) = @_;
    my $last = $#{$self->{string}};
    my $curr = $self->{current};
    if ($curr >= 0 && $curr <= $last) {
	return $self->{string}->[$curr];
    }
    else {
	return '';
    }
}

sub increment {
    my ($self) = @_;
    $self->{current}++;
}

sub decrement {
    my ($self) = @_;
    $self->{current}--;
}

sub plus {
    my ($self, $offset) = @_;
    my $rself = $self->clone;
    $rself->{current} += $offset;
    return $rself;
}

sub minus {
    my ($self, $offset) = @_;
    my $rself = $self->clone;
    $rself->{current} -= $offset;
    return $rself;
}

sub multiply {
    my ($left, $right, $swapped) = @_;
    my $char = $left->thischar();
    return $char * $right;
}

sub spaceship {
    my ($left, $right, $swapped) = @_;
    unless (ref($right)) { # not an object already
	$right = $left->new($right);
    }
    return $left->{current} <=> $right->{current};
}

sub cmp {
    my ($left, $right, $swapped) = @_;
    unless (ref($right)) { # not an object already
	if (length($right) == 1) { # comparing single character only
	    return $left->thischar cmp $right;
	}
	$right = $left->new($right);
    }
    return $left->currstr cmp $right->currstr;
}

sub bool {
    my ($self) = @_;
    my $char = $self->thischar;
    return ($char ne '');
}

sub clone {
    my ($left, $right, $swapped) = @_;
    $right = {
	string  => [@{$left->{string}}],
	current => $left->{current},
    };
    return bless $right, ref($left);
}

sub currstr {
    my ($self, $s) = @_;
    my $curr = $self->{current};
    my $last = $#{$self->{string}};
    if (defined($s) && $s->{current} < $last) {
	$last = $s->{current};
    }

    my $string = join('', @{$self->{string}}[$curr..$last]);
    return $string;
}

package version::vpp;

use 5.006002;
use strict;
use warnings::register;

use Config;

our $VERSION = '0.9930';
our $CLASS = 'version::vpp';
our ($LAX, $STRICT, $WARN_CATEGORY);

if ($] > 5.015) {
    warnings::register_categories(qw/version/);
    $WARN_CATEGORY = 'version';
} else {
    $WARN_CATEGORY = 'numeric';
}

require version::regex;
*version::vpp::is_strict = \&version::regex::is_strict;
*version::vpp::is_lax = \&version::regex::is_lax;
*LAX = \$version::regex::LAX;
*STRICT = \$version::regex::STRICT;

use overload (
    '""'       => \&stringify,
    '0+'       => \&numify,
    'cmp'      => \&vcmp,
    '<=>'      => \&vcmp,
    'bool'     => \&vbool,
    '+'        => \&vnoop,
    '-'        => \&vnoop,
    '*'        => \&vnoop,
    '/'        => \&vnoop,
    '+='        => \&vnoop,
    '-='        => \&vnoop,
    '*='        => \&vnoop,
    '/='        => \&vnoop,
    'abs'      => \&vnoop,
);

sub import {
    no strict 'refs';
    my ($class) = shift;

    # Set up any derived class
    unless ($class eq $CLASS) {
	local $^W;
	*{$class.'::declare'} =  \&{$CLASS.'::declare'};
	*{$class.'::qv'} = \&{$CLASS.'::qv'};
    }

    my %args;
    if (@_) { # any remaining terms are arguments
	map { $args{$_} = 1 } @_
    }
    else { # no parameters at all on use line
	%args =
	(
	    qv => 1,
	    'UNIVERSAL::VERSION' => 1,
	);
    }

    my $callpkg = caller();

    if (exists($args{declare})) {
	*{$callpkg.'::declare'} =
	    sub {return $class->declare(shift) }
	  unless defined(&{$callpkg.'::declare'});
    }

    if (exists($args{qv})) {
	*{$callpkg.'::qv'} =
	    sub {return $class->qv(shift) }
	  unless defined(&{$callpkg.'::qv'});
    }

    if (exists($args{'UNIVERSAL::VERSION'})) {
	no warnings qw/redefine/;
	*UNIVERSAL::VERSION
		= \&{$CLASS.'::_VERSION'};
    }

    if (exists($args{'VERSION'})) {
	*{$callpkg.'::VERSION'} = \&{$CLASS.'::_VERSION'};
    }

    if (exists($args{'is_strict'})) {
	*{$callpkg.'::is_strict'} = \&{$CLASS.'::is_strict'}
	  unless defined(&{$callpkg.'::is_strict'});
    }

    if (exists($args{'is_lax'})) {
	*{$callpkg.'::is_lax'} = \&{$CLASS.'::is_lax'}
	  unless defined(&{$callpkg.'::is_lax'});
    }
}

my $VERSION_MAX = 0x7FFFFFFF;

# implement prescan_version as closely to the C version as possible
use constant TRUE  => 1;
use constant FALSE => 0;

sub isDIGIT {
    my ($char) = shift->thischar();
    return ($char =~ /\d/);
}

sub isALPHA {
    my ($char) = shift->thischar();
    return ($char =~ /[a-zA-Z]/);
}

sub isSPACE {
    my ($char) = shift->thischar();
    return ($char =~ /\s/);
}

sub BADVERSION {
    my ($s, $errstr, $error) = @_;
    if ($errstr) {
	$$errstr = $error;
    }
    return $s;
}

sub prescan_version {
    my ($s, $strict, $errstr, $sqv, $ssaw_decimal, $swidth, $salpha) = @_;
    my $qv          = defined $sqv          ? $$sqv          : FALSE;
    my $saw_decimal = defined $ssaw_decimal ? $$ssaw_decimal : 0;
    my $width       = defined $swidth       ? $$swidth       : 3;
    my $alpha       = defined $salpha       ? $$salpha       : FALSE;

    my $d = $s;

    if ($qv && isDIGIT($d)) {
	goto dotted_decimal_version;
    }

    if ($d eq 'v') { # explicit v-string
	$d++;
	if (isDIGIT($d)) {
	    $qv = TRUE;
	}
	else { # degenerate v-string
	    # requires v1.2.3
	    return BADVERSION($s,$errstr,"Invalid version format (dotted-decimal versions require at least three parts)");
	}

dotted_decimal_version:
	if ($strict && $d eq '0' && isDIGIT($d+1)) {
	    # no leading zeros allowed
	    return BADVERSION($s,$errstr,"Invalid version format (no leading zeros)");
	}

	while (isDIGIT($d)) { 	# integer part
	    $d++;
	}

	if ($d eq '.')
	{
	    $saw_decimal++;
	    $d++; 		# decimal point
	}
	else
	{
	    if ($strict) {
		# require v1.2.3
		return BADVERSION($s,$errstr,"Invalid version format (dotted-decimal versions require at least three parts)");
	    }
	    else {
		goto version_prescan_finish;
	    }
	}

	{
	    my $i = 0;
	    my $j = 0;
	    while (isDIGIT($d)) {	# just keep reading
		$i++;
		while (isDIGIT($d)) {
		    $d++; $j++;
		    # maximum 3 digits between decimal
		    if ($strict && $j > 3) {
			return BADVERSION($s,$errstr,"Invalid version format (maximum 3 digits between decimals)");
		    }
		}
		if ($d eq '_') {
		    if ($strict) {
			return BADVERSION($s,$errstr,"Invalid version format (no underscores)");
		    }
		    if ( $alpha ) {
			return BADVERSION($s,$errstr,"Invalid version format (multiple underscores)");
		    }
		    $d++;
		    $alpha = TRUE;
		}
		elsif ($d eq '.') {
		    if ($alpha) {
			return BADVERSION($s,$errstr,"Invalid version format (underscores before decimal)");
		    }
		    $saw_decimal++;
		    $d++;
		}
		elsif (!isDIGIT($d)) {
		    last;
		}
		$j = 0;
	    }

	    if ($strict && $i < 2) {
		# requires v1.2.3
		return BADVERSION($s,$errstr,"Invalid version format (dotted-decimal versions require at least three parts)");
	    }
	}
    } 					# end if dotted-decimal
    else
    {					# decimal versions
	my $j = 0;
	# special $strict case for leading '.' or '0'
	if ($strict) {
	    if ($d eq '.') {
		return BADVERSION($s,$errstr,"Invalid version format (0 before decimal required)");
	    }
	    if ($d eq '0' && isDIGIT($d+1)) {
		return BADVERSION($s,$errstr,"Invalid version format (no leading zeros)");
	    }
	}

	# and we never support negative version numbers
	if ($d eq '-') {
	    return BADVERSION($s,$errstr,"Invalid version format (negative version number)");
	}

	# consume all of the integer part
	while (isDIGIT($d)) {
	    $d++;
	}

	# look for a fractional part
	if ($d eq '.') {
	    # we found it, so consume it
	    $saw_decimal++;
	    $d++;
	}
	elsif (!$d || $d eq ';' || isSPACE($d) || $d eq '}') {
	    if ( $d == $s ) {
		# found nothing
		return BADVERSION($s,$errstr,"Invalid version format (version required)");
	    }
	    # found just an integer
	    goto version_prescan_finish;
	}
	elsif ( $d == $s ) {
	    # didn't find either integer or period
	    return BADVERSION($s,$errstr,"Invalid version format (non-numeric data)");
	}
	elsif ($d eq '_') {
	    # underscore can't come after integer part
	    if ($strict) {
		return BADVERSION($s,$errstr,"Invalid version format (no underscores)");
	    }
	    elsif (isDIGIT($d+1)) {
		return BADVERSION($s,$errstr,"Invalid version format (alpha without decimal)");
	    }
	    else {
		return BADVERSION($s,$errstr,"Invalid version format (misplaced underscore)");
	    }
	}
	elsif ($d) {
	    # anything else after integer part is just invalid data
	    return BADVERSION($s,$errstr,"Invalid version format (non-numeric data)");
	}

	# scan the fractional part after the decimal point
	if ($d && !isDIGIT($d) && ($strict || ! ($d eq ';' || isSPACE($d) || $d eq '}') )) {
		# $strict or lax-but-not-the-end
		return BADVERSION($s,$errstr,"Invalid version format (fractional part required)");
	}

	while (isDIGIT($d)) {
	    $d++; $j++;
	    if ($d eq '.' && isDIGIT($d-1)) {
		if ($alpha) {
		    return BADVERSION($s,$errstr,"Invalid version format (underscores before decimal)");
		}
		if ($strict) {
		    return BADVERSION($s,$errstr,"Invalid version format (dotted-decimal versions must begin with 'v')");
		}
		$d = $s; # start all over again
		$qv = TRUE;
		goto dotted_decimal_version;
	    }
	    if ($d eq '_') {
		if ($strict) {
		    return BADVERSION($s,$errstr,"Invalid version format (no underscores)");
		}
		if ( $alpha ) {
		    return BADVERSION($s,$errstr,"Invalid version format (multiple underscores)");
		}
		if ( ! isDIGIT($d+1) ) {
		    return BADVERSION($s,$errstr,"Invalid version format (misplaced underscore)");
		}
		$width = $j;
		$d++;
		$alpha = TRUE;
	    }
	}
    }

version_prescan_finish:
    while (isSPACE($d)) {
	$d++;
    }

    if ($d && !isDIGIT($d) && (! ($d eq ';' || $d eq '}') )) {
	# trailing non-numeric data
	return BADVERSION($s,$errstr,"Invalid version format (non-numeric data)");
    }
    if ($saw_decimal > 1 && ($d-1) eq '.') {
	# no trailing period allowed
	return BADVERSION($s,$errstr,"Invalid version format (trailing decimal)");
    }

    if (defined $sqv) {
	$$sqv = $qv;
    }
    if (defined $swidth) {
	$$swidth = $width;
    }
    if (defined $ssaw_decimal) {
	$$ssaw_decimal = $saw_decimal;
    }
    if (defined $salpha) {
	$$salpha = $alpha;
    }
    return $d;
}

sub scan_version {
    my ($s, $rv, $qv) = @_;
    my $start;
    my $pos;
    my $last;
    my $errstr;
    my $saw_decimal = 0;
    my $width = 3;
    my $alpha = FALSE;
    my $vinf = FALSE;
    my @av;

    $s = new charstar $s;

    while (isSPACE($s)) { # leading whitespace is OK
	$s++;
    }

    $last = prescan_version($s, FALSE, \$errstr, \$qv, \$saw_decimal,
	\$width, \$alpha);

    if ($errstr) {
	# 'undef' is a special case and not an error
	if ( $s ne 'undef') {
	    require Carp;
	    Carp::croak($errstr);
	}
    }

    $start = $s;
    if ($s eq 'v') {
	$s++;
    }
    $pos = $s;

    if ( $qv ) {
	$$rv->{qv} = $qv;
    }
    if ( $alpha ) {
	$$rv->{alpha} = $alpha;
    }
    if ( !$qv && $width < 3 ) {
	$$rv->{width} = $width;
    }

    while (isDIGIT($pos) || $pos eq '_') {
	$pos++;
    }
    if (!isALPHA($pos)) {
	my $rev;

	for (;;) {
	    $rev = 0;
	    {
  		# this is atoi() that delimits on underscores
  		my $end = $pos;
  		my $mult = 1;
		my $orev;

		#  the following if() will only be true after the decimal
		#  point of a version originally created with a bare
		#  floating point number, i.e. not quoted in any way
		#
 		if ( !$qv && $s > $start && $saw_decimal == 1 ) {
		    $mult *= 100;
 		    while ( $s < $end ) {
			next if $s eq '_';
			$orev = $rev;
 			$rev += $s * $mult;
 			$mult /= 10;
			if (   (abs($orev) > abs($rev))
			    || (abs($rev) > $VERSION_MAX )) {
			    warn("Integer overflow in version %d",
					   $VERSION_MAX);
			    $s = $end - 1;
			    $rev = $VERSION_MAX;
			    $vinf = 1;
			}
 			$s++;
			if ( $s eq '_' ) {
			    $s++;
			}
 		    }
  		}
 		else {
 		    while (--$end >= $s) {
			next if $end eq '_';
			$orev = $rev;
 			$rev += $end * $mult;
 			$mult *= 10;
			if (   (abs($orev) > abs($rev))
			    || (abs($rev) > $VERSION_MAX )) {
			    warn("Integer overflow in version");
			    $end = $s - 1;
			    $rev = $VERSION_MAX;
			    $vinf = 1;
			}
 		    }
 		}
  	    }

  	    # Append revision
	    push @av, $rev;
	    if ( $vinf ) {
		$s = $last;
		last;
	    }
	    elsif ( $pos eq '.' ) {
		$s = ++$pos;
	    }
	    elsif ( $pos eq '_' && isDIGIT($pos+1) ) {
		$s = ++$pos;
	    }
	    elsif ( $pos eq ',' && isDIGIT($pos+1) ) {
		$s = ++$pos;
	    }
	    elsif ( isDIGIT($pos) ) {
		$s = $pos;
	    }
	    else {
		$s = $pos;
		last;
	    }
	    if ( $qv ) {
		while ( isDIGIT($pos) || $pos eq '_') {
		    $pos++;
		}
	    }
	    else {
		my $digits = 0;
		while ( ( isDIGIT($pos) || $pos eq '_' ) && $digits < 3 ) {
		    if ( $pos ne '_' ) {
			$digits++;
		    }
		    $pos++;
		}
	    }
	}
    }
    if ( $qv ) { # quoted versions always get at least three terms
	my $len = $#av;
	#  This for loop appears to trigger a compiler bug on OS X, as it
	#  loops infinitely. Yes, len is negative. No, it makes no sense.
	#  Compiler in question is:
	#  gcc version 3.3 20030304 (Apple Computer, Inc. build 1640)
	#  for ( len = 2 - len; len > 0; len-- )
	#  av_push(MUTABLE_AV(sv), newSViv(0));
	#
	$len = 2 - $len;
	while ($len-- > 0) {
	    push @av, 0;
	}
    }

    # need to save off the current version string for later
    if ( $vinf ) {
	$$rv->{original} = "v.Inf";
	$$rv->{vinf} = 1;
    }
    elsif ( $s > $start ) {
	$$rv->{original} = $start->currstr($s);
	if ( $qv && $saw_decimal == 1 && $start ne 'v' ) {
	    # need to insert a v to be consistent
	    $$rv->{original} = 'v' . $$rv->{original};
	}
    }
    else {
	$$rv->{original} = '0';
	push(@av, 0);
    }

    # And finally, store the AV in the hash
    $$rv->{version} = \@av;

    # fix RT#19517 - special case 'undef' as string
    if ($s eq 'undef') {
	$s += 5;
    }

    return $s;
}

sub new {
    my $class = shift;
    unless (defined $class or $#_ > 1) {
	require Carp;
	Carp::croak('Usage: version::new(class, version)');
    }

    my $self = bless ({}, ref ($class) || $class);
    my $qv = FALSE;

    if ( $#_ == 1 ) { # must be CVS-style
	$qv = TRUE;
    }
    my $value = pop; # always going to be the last element

    if ( ref($value) && eval('$value->isa("version")') ) {
	# Can copy the elements directly
	$self->{version} = [ @{$value->{version} } ];
	$self->{qv} = 1 if $value->{qv};
	$self->{alpha} = 1 if $value->{alpha};
	$self->{original} = ''.$value->{original};
	return $self;
    }

    if ( not defined $value or $value =~ /^undef$/ ) {
	# RT #19517 - special case for undef comparison
	# or someone forgot to pass a value
	push @{$self->{version}}, 0;
	$self->{original} = "0";
	return ($self);
    }


    if (ref($value) =~ m/ARRAY|HASH/) {
	require Carp;
	Carp::croak("Invalid version format (non-numeric data)");
    }

    $value = _un_vstring($value);

    if ($Config{d_setlocale}) {
	use POSIX qw/locale_h/;
	use if $Config{d_setlocale}, 'locale';
	my $currlocale = setlocale(LC_ALL);

	# if the current locale uses commas for decimal points, we
	# just replace commas with decimal places, rather than changing
	# locales
	if ( localeconv()->{decimal_point} eq ',' ) {
	    $value =~ tr/,/./;
	}
    }

    # exponential notation
    if ( $value =~ /\d+.?\d*e[-+]?\d+/ ) {
	$value = sprintf("%.9f",$value);
	$value =~ s/(0+)$//; # trim trailing zeros
    }

    my $s = scan_version($value, \$self, $qv);

    if ($s) { # must be something left over
	warn(sprintf "Version string '%s' contains invalid data; "
		   ."ignoring: '%s'", $value, $s);
    }

    return ($self);
}

*parse = \&new;

sub numify {
    my ($self) = @_;
    unless (_verify($self)) {
	require Carp;
	Carp::croak("Invalid version object");
    }
    my $alpha = $self->{alpha} || "";
    my $len = $#{$self->{version}};
    my $digit = $self->{version}[0];
    my $string = sprintf("%d.", $digit );

    if ($alpha and warnings::enabled()) {
	warnings::warn($WARN_CATEGORY, 'alpha->numify() is lossy');
    }

    for ( my $i = 1 ; $i <= $len ; $i++ ) {
	$digit = $self->{version}[$i];
	$string .= sprintf("%03d", $digit);
    }

    if ( $len == 0 ) {
	$string .= sprintf("000");
    }

    return $string;
}

sub normal {
    my ($self) = @_;
    unless (_verify($self)) {
	require Carp;
	Carp::croak("Invalid version object");
    }

    my $len = $#{$self->{version}};
    my $digit = $self->{version}[0];
    my $string = sprintf("v%d", $digit );

    for ( my $i = 1 ; $i <= $len ; $i++ ) {
	$digit = $self->{version}[$i];
	$string .= sprintf(".%d", $digit);
    }

    if ( $len <= 2 ) {
	for ( $len = 2 - $len; $len != 0; $len-- ) {
	    $string .= sprintf(".%0d", 0);
	}
    }

    return $string;
}

sub stringify {
    my ($self) = @_;
    unless (_verify($self)) {
	require Carp;
	Carp::croak("Invalid version object");
    }
    return exists $self->{original}
    	? $self->{original}
	: exists $self->{qv}
	    ? $self->normal
	    : $self->numify;
}

sub vcmp {
    my ($left,$right,$swap) = @_;
    die "Usage: version::vcmp(lobj, robj, ...)" if @_ < 2;
    my $class = ref($left);
    unless ( UNIVERSAL::isa($right, $class) ) {
	$right = $class->new($right);
    }

    if ( $swap ) {
	($left, $right) = ($right, $left);
    }
    unless (_verify($left)) {
	require Carp;
	Carp::croak("Invalid version object");
    }
    unless (_verify($right)) {
	require Carp;
	Carp::croak("Invalid version format");
    }
    my $l = $#{$left->{version}};
    my $r = $#{$right->{version}};
    my $m = $l < $r ? $l : $r;
    my $lalpha = $left->is_alpha;
    my $ralpha = $right->is_alpha;
    my $retval = 0;
    my $i = 0;
    while ( $i <= $m && $retval == 0 ) {
	$retval = $left->{version}[$i] <=> $right->{version}[$i];
	$i++;
    }

    # possible match except for trailing 0's
    if ( $retval == 0 && $l != $r ) {
	if ( $l < $r ) {
	    while ( $i <= $r && $retval == 0 ) {
		if ( $right->{version}[$i] != 0 ) {
		    $retval = -1; # not a match after all
		}
		$i++;
	    }
	}
	else {
	    while ( $i <= $l && $retval == 0 ) {
		if ( $left->{version}[$i] != 0 ) {
		    $retval = +1; # not a match after all
		}
		$i++;
	    }
	}
    }

    return $retval;
}

sub vbool {
    my ($self) = @_;
    return vcmp($self,$self->new("0"),1);
}

sub vnoop {
    require Carp;
    Carp::croak("operation not supported with version object");
}

sub is_alpha {
    my ($self) = @_;
    return (exists $self->{alpha});
}

sub qv {
    my $value = shift;
    my $class = $CLASS;
    if (@_) {
	$class = ref($value) || $value;
	$value = shift;
    }

    $value = _un_vstring($value);
    $value = 'v'.$value unless $value =~ /(^v|\d+\.\d+\.\d)/;
    my $obj = $CLASS->new($value);
    return bless $obj, $class;
}

*declare = \&qv;

sub is_qv {
    my ($self) = @_;
    return (exists $self->{qv});
}


sub _verify {
    my ($self) = @_;
    if ( ref($self)
	&& eval { exists $self->{version} }
	&& ref($self->{version}) eq 'ARRAY'
	) {
	return 1;
    }
    else {
	return 0;
    }
}

sub _is_non_alphanumeric {
    my $s = shift;
    $s = new charstar $s;
    while ($s) {
	return 0 if isSPACE($s); # early out
	return 1 unless (isALPHA($s) || isDIGIT($s) || $s =~ /[.-]/);
	$s++;
    }
    return 0;
}

sub _un_vstring {
    my $value = shift;
    # may be a v-string
    if ( length($value) >= 1 && $value !~ /[,._]/
	&& _is_non_alphanumeric($value)) {
	my $tvalue;
	if ( $] >= 5.008_001 ) {
	    $tvalue = _find_magic_vstring($value);
	    $value = $tvalue if length $tvalue;
	}
	elsif ( $] >= 5.006_000 ) {
	    $tvalue = sprintf("v%vd",$value);
	    if ( $tvalue =~ /^v\d+(\.\d+)*$/ ) {
		# must be a v-string
		$value = $tvalue;
	    }
	}
    }
    return $value;
}

sub _find_magic_vstring {
    my $value = shift;
    my $tvalue = '';
    require B;
    my $sv = B::svref_2object(\$value);
    my $magic = ref($sv) eq 'B::PVMG' ? $sv->MAGIC : undef;
    while ( $magic ) {
	if ( $magic->TYPE eq 'V' ) {
	    $tvalue = $magic->PTR;
	    $tvalue =~ s/^v?(.+)$/v$1/;
	    last;
	}
	else {
	    $magic = $magic->MOREMAGIC;
	}
    }
    $tvalue =~ tr/_//d;
    return $tvalue;
}

sub _VERSION {
    my ($obj, $req) = @_;
    my $class = ref($obj) || $obj;

    no strict 'refs';
    if ( exists $INC{"$class.pm"} and not %{"$class\::"} and $] >= 5.008) {
	 # file but no package
	require Carp;
	Carp::croak( "$class defines neither package nor VERSION"
	    ."--version check failed");
    }

    my $version = eval "\$$class\::VERSION";
    if ( defined $version ) {
	local $^W if $] <= 5.008;
	$version = version::vpp->new($version);
    }

    if ( defined $req ) {
	unless ( defined $version ) {
	    require Carp;
	    my $msg =  $] < 5.006
	    ? "$class version $req required--this is only version "
	    : "$class does not define \$$class\::VERSION"
	      ."--version check failed";

	    if ( $ENV{VERSION_DEBUG} ) {
		Carp::confess($msg);
	    }
	    else {
		Carp::croak($msg);
	    }
	}

	$req = version::vpp->new($req);

	if ( $req > $version ) {
	    require Carp;
	    if ( $req->is_qv ) {
		Carp::croak(
		    sprintf ("%s version %s required--".
			"this is only version %s", $class,
			$req->normal, $version->normal)
		);
	    }
	    else {
		Carp::croak(
		    sprintf ("%s version %s required--".
			"this is only version %s", $class,
			$req->stringify, $version->stringify)
		);
	    }
	}
    }

    return defined $version ? $version->stringify : undef;
}

1; #this line is important and will help the module return a true value

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