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21
22package installer::patch::Version;
23
24
25=head1 NAME
26
27    package installer::patch::Version - Functions for handling version numbers.
28
29=cut
30
31
32
33# We handle version numbers that consist of three parts: major, minor and micro version number.
34my $VersionPartCount = 3;
35
36
37
38=head2 StringToNumberArray($version_string)
39
40    Convert a version string (where the individual parts are separated by '.') into an array of three numbers.
41    Missing numbers are filled with 0.
42
43    Returns an array with three elements (major, minor, micro).
44=cut
45sub StringToNumberArray ($)
46{
47    my ($version_string) = @_;
48
49    my @version_parts = split(/\./, $version_string);
50    while (scalar @version_parts < $VersionPartCount)
51    {
52        push @version_parts, "0";
53    }
54    return @version_parts;
55}
56
57
58
59
60=head2 ArrayToDirectoryName (@)
61
62    Return a directory name (without any path) for the given array of version numbers.
63
64=cut
65sub ArrayToDirectoryName (@)
66{
67    return "v-".join("-", @_);
68}
69
70
71
72=head2 ArrayToNoDotName (@)
73
74    This symply creates a version array (A,B,C) into a version string
75    "ABC" with no dots between major, minor and micro version number.
76
77=cut
78sub ArrayToNoDotName (@)
79{
80    return join("", @_);
81}
82
83
84
85
86=head2 IsMajorVersion ($version_string)
87
88    Return 1 if $version_string is a major version, ie. ?.0.0
89    Return 0 otherwise.
90
91=cut
92sub IsMajorVersion ($)
93{
94    my ($version_string) = @_;
95    my @version = installer::patch::Version::StringToNumberArray($version_string);
96    for (my $index=1; $index<$VersionPartCount; ++$index)
97    {
98        return 0 if $version[$index] ne "0";
99    }
100    return 1;
101}
102
103
104
1051;
106