AOO410/main/solenv/bin/modules/installer/patch/Version.pm

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package installer::patch::Version;


=head1 NAME

    package installer::patch::Version - Functions for handling version numbers.

=cut



# We handle version numbers that consist of three parts: major, minor and micro version number.
my $VersionPartCount = 3;



=head2 StringToNumberArray($version_string)

    Convert a version string (where the individual parts are separated by '.') into an array of three numbers.
    Missing numbers are filled with 0.

    Returns an array with three elements (major, minor, micro).
=cut
sub StringToNumberArray ($)
{
    my ($version_string) = @_;

    my @version_parts = split(/\./, $version_string);
    while (scalar @version_parts < $VersionPartCount)
    {
        push @version_parts, "0";
    }
    return @version_parts;
}




=head2 ArrayToDirectoryName (@)

    Return a directory name (without any path) for the given array of version numbers.
    
=cut
sub ArrayToDirectoryName (@)
{
    return "v-".join("-", @_);
}



=head2 ArrayToNoDotName (@)

    This symply creates a version array (A,B,C) into a version string
    "ABC" with no dots between major, minor and micro version number.

=cut
sub ArrayToNoDotName (@)
{
    return join("", @_);
}




=head2 IsMajorVersion ($version_string)

    Return 1 if $version_string is a major version, ie. ?.0.0
    Return 0 otherwise.

=cut
sub IsMajorVersion ($)
{
    my ($version_string) = @_;
    my @version = installer::patch::Version::StringToNumberArray($version_string);
    for (my $index=1; $index<$VersionPartCount; ++$index)
    {
        return 0 if $version[$index] ne "0";
    }
    return 1;
}



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