1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
|
package CPAN::Version;
use strict;
use vars qw($VERSION);
$VERSION = "5.5001";
# CPAN::Version::vcmp courtesy Jost Krieger
sub vcmp {
my($self,$l,$r) = @_;
local($^W) = 0;
CPAN->debug("l[$l] r[$r]") if $CPAN::DEBUG;
return 0 if $l eq $r; # short circuit for quicker success
for ($l,$r) {
s/_//g;
}
CPAN->debug("l[$l] r[$r]") if $CPAN::DEBUG;
for ($l,$r) {
next unless tr/.// > 1 || /^v/;
s/^v?/v/;
1 while s/\.0+(\d)/.$1/; # remove leading zeroes per group
}
CPAN->debug("l[$l] r[$r]") if $CPAN::DEBUG;
if ($l=~/^v/ <=> $r=~/^v/) {
for ($l,$r) {
next if /^v/;
$_ = $self->float2vv($_);
}
}
CPAN->debug("l[$l] r[$r]") if $CPAN::DEBUG;
my $lvstring = "v0";
my $rvstring = "v0";
if ($] >= 5.006
&& $l =~ /^v/
&& $r =~ /^v/) {
$lvstring = $self->vstring($l);
$rvstring = $self->vstring($r);
CPAN->debug(sprintf "lv[%vd] rv[%vd]", $lvstring, $rvstring) if $CPAN::DEBUG;
}
return (
($l ne "undef") <=> ($r ne "undef")
||
$lvstring cmp $rvstring
||
$l <=> $r
||
$l cmp $r
);
}
sub vgt {
my($self,$l,$r) = @_;
$self->vcmp($l,$r) > 0;
}
sub vlt {
my($self,$l,$r) = @_;
$self->vcmp($l,$r) < 0;
}
sub vge {
my($self,$l,$r) = @_;
$self->vcmp($l,$r) >= 0;
}
sub vle {
my($self,$l,$r) = @_;
$self->vcmp($l,$r) <= 0;
}
sub vstring {
my($self,$n) = @_;
$n =~ s/^v// or die "CPAN::Version::vstring() called with invalid arg [$n]";
pack "U*", split /\./, $n;
}
# vv => visible vstring
sub float2vv {
my($self,$n) = @_;
my($rev) = int($n);
$rev ||= 0;
my($mantissa) = $n =~ /\.(\d{1,12})/; # limit to 12 digits to limit
# architecture influence
$mantissa ||= 0;
$mantissa .= "0" while length($mantissa)%3;
my $ret = "v" . $rev;
while ($mantissa) {
$mantissa =~ s/(\d{1,3})// or
die "Panic: length>0 but not a digit? mantissa[$mantissa]";
$ret .= ".".int($1);
}
# warn "n[$n]ret[$ret]";
$ret =~ s/(\.0)+/.0/; # v1.0.0 => v1.0
$ret;
}
sub readable {
my($self,$n) = @_;
$n =~ /^([\w\-\+\.]+)/;
return $1 if defined $1 && length($1)>0;
# if the first user reaches version v43, he will be treated as "+".
# We'll have to decide about a new rule here then, depending on what
# will be the prevailing versioning behavior then.
if ($] < 5.006) { # or whenever v-strings were introduced
# we get them wrong anyway, whatever we do, because 5.005 will
# have already interpreted 0.2.4 to be "0.24". So even if he
# indexer sends us something like "v0.2.4" we compare wrongly.
# And if they say v1.2, then the old perl takes it as "v12"
if (defined $CPAN::Frontend) {
$CPAN::Frontend->mywarn("Suspicious version string seen [$n]\n");
} else {
warn("Suspicious version string seen [$n]\n");
}
return $n;
}
my $better = sprintf "v%vd", $n;
CPAN->debug("n[$n] better[$better]") if $CPAN::DEBUG;
return $better;
}
1;
__END__
=head1 NAME
CPAN::Version - utility functions to compare CPAN versions
=head1 SYNOPSIS
use CPAN::Version;
CPAN::Version->vgt("1.1","1.1.1"); # 1 bc. 1.1 > 1.001001
CPAN::Version->vlt("1.1","1.1"); # 0 bc. 1.1 not < 1.1
CPAN::Version->vcmp("1.1","1.1.1"); # 1 bc. first is larger
CPAN::Version->vcmp("1.1.1","1.1"); # -1 bc. first is smaller
CPAN::Version->readable(v1.2.3); # "v1.2.3"
CPAN::Version->vstring("v1.2.3"); # v1.2.3
CPAN::Version->float2vv(1.002003); # "v1.2.3"
=head1 DESCRIPTION
This module mediates between some version that perl sees in a package
and the version that is published by the CPAN indexer.
It's only written as a helper module for both CPAN.pm and CPANPLUS.pm.
As it stands it predates version.pm but has the same goal: make
version strings visible and comparable.
=head1 LICENSE
This program is free software; you can redistribute it and/or
modify it under the same terms as Perl itself.
=cut
# Local Variables:
# mode: cperl
# cperl-indent-level: 4
# End:
|
