/****************************************************************************
**
** Copyright (C) 2018 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing
**
** This file is part of Qbs.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
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** GNU Lesser General Public License Usage
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function languageVersion(versionArray, knownValues, lang) {
    if (!versionArray)
        return undefined;
    var versions = [].uniqueConcat(versionArray);
    if (versions.length === 1)
        return versions[0];
    for (var i = 0; i < knownValues.length; ++i) {
        var candidate = knownValues[i];
        if (versions.contains(candidate))
            return candidate;
    }
    var version = versions[0];
    console.debug("Randomly choosing '" + version
                  + "' from list of unknown " + lang + " version strings (" + versions + ")");
    return version;
}