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src/inc/version/vpp.pm  view on Meta::CPAN

    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 strict;

use POSIX qw/locale_h/;
use locale;
use vars qw ($VERSION @ISA @REGEXS);
$VERSION = 0.96;

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

eval "use warnings";
if ($@) {
    eval '
	package
	warnings;
	sub enabled {return $^W;}
	1;
    ';
}

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 {

src/inc/version/vpp.pm  view on Meta::CPAN

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

	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;
	}

	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/,/./;
	}

	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 ( $#_ == 2 ) { # must be CVS-style
	    $value = $_[2];
	    $qv = TRUE;
	}

	$value = _un_vstring($value);

	# 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("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 $width = $self->{width} || 3;
    my $alpha = $self->{alpha} || "";
    my $len = $#{$self->{version}};
    my $digit = $self->{version}[0];
    my $string = sprintf("%d.", $digit );

    for ( my $i = 1 ; $i < $len ; $i++ ) {
	$digit = $self->{version}[$i];
	if ( $width < 3 ) {
	    my $denom = 10**(3-$width);
	    my $quot = int($digit/$denom);
	    my $rem = $digit - ($quot * $denom);
	    $string .= sprintf("%0".$width."d_%d", $quot, $rem);
	}
	else {
	    $string .= sprintf("%03d", $digit);
	}