tag.cpp

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#include "./tag.h"
 
using namespace std;
 
namespace TagParser {
 
struct TagPrivate {};
 
Tag::Tag()
    : m_size(0)
{
}
 
Tag::~Tag()
{
}
 
string Tag::toString() const
{
    string res;
    res += typeName();
    if (supportsTarget()) {
        res += " targeting ";
        res += targetString();
    }
    return res;
}
 
std::vector<const TagValue *> Tag::values(KnownField field) const
{
    std::vector<const TagValue *> values;
    const TagValue &v = value(field);
    if (!v.isEmpty()) {
        values.push_back(&v);
    }
    return values;
}
 
bool Tag::setValues(KnownField field, const std::vector<TagValue> &values)
{
    return setValue(field, values.size() ? values.front() : TagValue());
}
 
std::size_t Tag::insertValues(const Tag &from, bool overwrite)
{
    auto count = std::size_t(0);
    for (int i = static_cast<int>(KnownField::Invalid) + 1, last = static_cast<int>(KnownField::Description); i <= last; ++i) {
        auto field = static_cast<KnownField>(i);
        const TagValue &ownValue = value(field);
        if (overwrite || ownValue.isEmpty()) {
            const TagValue &otherValue = from.value(field);
            if (!otherValue.isEmpty() && setValue(field, otherValue)) {
                ++count;
            }
        }
    }
    return count;
}
 
} // namespace TagParser