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#include "filetags.h"
#include <QStringList>

namespace qbs {
namespace Internal {

void FileTag::clear()
{
    Id::operator=(Id());
}

QStringList FileTags::toStringList() const
{
    QStringList strlst;
    foreach (const FileTag &tag, *this)
        strlst += tag.toString();
    return strlst;
}

FileTags FileTags::fromStringList(const QStringList &strings)
{
    FileTags result;
    foreach (const QString &str, strings)
        result += FileTag(str.toLocal8Bit());
    return result;
}

/*!
 * \return \c{true} if this file tags set has file tags in common with \c{other}.
 */
bool FileTags::matches(const FileTags &other) const
{
    for (FileTags::const_iterator it = other.begin(); it != other.end(); ++it)
        if (contains(*it))
            return true;
    return false;
}

LogWriter operator <<(LogWriter w, const FileTags &tags)
{
    bool firstLoop = true;
    w.write('(');
    foreach (const FileTag &tag, tags) {
        if (firstLoop)
            firstLoop = false;
        else
            w.write(QLatin1String(", "));
        w.write(tag.toString());
    }
    w.write(')');
    return w;
}

QDataStream &operator >>(QDataStream &s, FileTags &tags)
{
    int i;
    s >> i;
    tags.clear();
    tags.reserve(i);
    QVariant v;
    while (--i >= 0) {
        s >> v;
        tags += FileTag::fromSetting(v);
    }
    return s;
}

QDataStream &operator <<(QDataStream &s, const FileTags &tags)
{
    s << tags.count();
    foreach (const FileTag &ft, tags)
        s << ft.toSetting();
    return s;
}

} // namespace Internal
} // namespace qbs
