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
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
|
# ex:ts=8 sw=4:
# $OpenBSD: PkgSpec.pm,v 1.1 2004/10/11 09:44:06 espie Exp $
#
# Copyright (c) 2003-2004 Marc Espie <espie@openbsd.org>
#
# Permission to use, copy, modify, and distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
use strict;
use warnings;
package OpenBSD::PkgSpec;
# one useful function:
# OpenBSD::PkgSpec::match($pattern, @list) -> @sublist
# note that @sublist may contain duplicates
# all the shit that does handle package specifications
sub compare_pseudo_numbers
{
my ($n, $m) = @_;
my ($n1, $m1);
if ($n =~ m/^\d+/) {
$n1 = $&;
$n = $';
}
if ($m =~ m/^\d+/) {
$m1 = $&;
$m = $';
}
if ($n1 == $m1) {
return $n cmp $m;
} else {
return $n1 <=> $m1;
}
}
sub dewey_compare
{
my ($a, $b) = @_;
my ($pa, $pb);
unless ($b =~ m/p\d+$/) { # does the Dewey hold a p<number> ?
$a =~ s/p\d+$//; # No -> strip it from version.
}
return 0 if $a =~ /^$b$/; # bare equality
if ($a =~ s/p(\d+)$//) { # extract patchlevels
$pa = $1;
}
if ($b =~ s/p(\d+)$//) {
$pb = $1;
}
my @a = split(/\./, $a);
push @a, $pa if defined $pa; # ... and restore them
my @b = split(/\\\./, $b);
push @b, $pb if defined $pb;
while (@a > 0 && @b > 0) {
my $va = shift @a;
my $vb = shift @b;
next if $va eq $vb;
return compare_pseudo_numbers($va, $vb);
}
if (@a > 0) {
return 1;
} else {
return -1;
}
}
sub check_version
{
my ($v, $spec) = @_;
local $_;
# any version spec
return 1 if $spec eq '.*';
my @specs = split(/,/, $spec);
for (grep /^\d/, @specs) { # exact number: check match
return 1 if $v =~ /^$_$/;
return 1 if $v =~ /^${_}p\d+$/; # allows for recent patches
}
# Last chance: dewey specs ?
my @deweys = grep !/^\d/, @specs;
for (@deweys) {
if (m/^\<\=|\>\=|\<|\>/) {
my ($op, $dewey) = ($&, $');
my $compare = dewey_compare($v, $dewey);
return 0 if $op eq '<' && $compare >= 0;
return 0 if $op eq '<=' && $compare > 0;
return 0 if $op eq '>' && $compare <= 0;
return 0 if $op eq '>=' && $compare < 0;
} else {
return 0; # unknown spec type
}
}
return @deweys == 0 ? 0 : 1;
}
sub check_1flavor
{
my ($f, $spec) = @_;
local $_;
for (split /-/, $spec) {
# must not be here
if (m/^\!/) {
return 0 if $f->{$'};
# must be here
} else {
return 0 unless $f->{$_};
}
}
return 1;
}
sub check_flavor
{
my ($f, $spec) = @_;
local $_;
# no flavor constraints
return 1 if $spec eq '';
$spec =~ s/^-//;
# retrieve all flavors
my %f = map +($_, 1), split /\-/, $f;
# check each flavor constraint
for (split /,/, $spec) {
if (check_1flavor(\%f, $_)) {
return 1;
}
}
return 0;
}
sub subpattern_match
{
my ($p, $list) = @_;
local $_;
my ($stemspec, $vspec, $flavorspec);
# then, guess at where the version number is if any,
# this finds patterns like -<=2.3,>=3.4.p1-
# the only constraint is that the actual number
# - must start with a digit,
# - not contain - or ,
if ($p =~ m/\-((?:\>|\>\=|\<|\<\=)?\d[^-]*)/) {
($stemspec, $vspec, $flavorspec) = ($`, $1, $');
# `any version' matcher
} elsif ($p =~ m/\-\*/) {
($stemspec, $vspec, $flavorspec) = ($`, '*', $');
# okay, so no version marker. Assume no flavor spec.
} else {
($stemspec, $vspec, $flavorspec) = ($p, '', '');
}
$stemspec =~ s/\./\\\./g;
$stemspec =~ s/\+/\\\+/g;
$stemspec =~ s/\*/\.\*/g;
$stemspec =~ s/\?/\./g;
$vspec =~ s/\./\\\./g;
$vspec =~ s/\+/\\\+/g;
$vspec =~ s/\*/\.\*/g;
$vspec =~ s/\?/\./g;
$p = $stemspec;
$p.="-.*" if $vspec ne '';
# First trim down the list
my @l = grep {/^$p$/} @$list;
my @result = ();
# Now, have to extract the version number, and the flavor...
for (@l) {
my ($stem, $v, $flavor);
if (m/\-(\d[^-]*)/) {
($stem, $v, $flavor) = ($`, $1, $');
if ($stem =~ m/^$stemspec$/ &&
check_version($v, $vspec) &&
check_flavor($flavor, $flavorspec)) {
push(@result, $_);
}
}
}
return @result;
}
sub match
{
my ($pattern, @list) = @_;
my @l = ();
for my $subpattern (split /\|/, $pattern) {
push(@l, subpattern_match($subpattern, \@list));
}
return @l;
}
1;
|
