matroskatag.h

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#ifndef TAG_PARSER_MATROSKATAG_H
#define TAG_PARSER_MATROSKATAG_H
 
#include "./matroskatagfield.h"
#include "./matroskatagid.h"
 
#include "../fieldbasedtag.h"
 
namespace TagParser {
 
class EbmlElement;
class MatroskaTag;
 
enum class MatroskaTagFlags : std::uint64_t {
    None = 0x0, 
    NormalizeKnownFieldIds = 0x1, 
};
 
} // namespace TagParser
 
CPP_UTILITIES_MARK_FLAG_ENUM_CLASS(TagParser, TagParser::MatroskaTagFlags)
 
namespace TagParser {
 
class TAG_PARSER_EXPORT MatroskaTagMaker {
    friend class MatroskaTag;
 
public:
    void make(std::ostream &stream) const;
    const MatroskaTag &tag() const;
    std::uint64_t requiredSize() const;
 
private:
    MatroskaTagMaker(MatroskaTag &tag, Diagnostics &diag);
 
    MatroskaTag &m_tag;
    std::uint64_t m_targetsSize;
    std::uint64_t m_simpleTagsSize;
    std::vector<MatroskaTagFieldMaker> m_maker;
    std::uint64_t m_tagSize;
    std::uint64_t m_totalSize;
};
 
inline const MatroskaTag &MatroskaTagMaker::tag() const
{
    return m_tag;
}
 
inline std::uint64_t MatroskaTagMaker::requiredSize() const
{
    return m_totalSize;
}
 
template <> class TAG_PARSER_EXPORT FieldMapBasedTagTraits<MatroskaTag> {
public:
    using FieldType = MatroskaTagField;
    using Compare = std::less<typename FieldType::IdentifierType>;
};
 
class TAG_PARSER_EXPORT MatroskaTag final : public FieldMapBasedTag<MatroskaTag> {
    friend class FieldMapBasedTag<MatroskaTag>;
 
public:
    MatroskaTag();
 
    static constexpr TagType tagType = TagType::MatroskaTag;
    static constexpr std::string_view tagName = "Matroska tag";
    static constexpr TagTextEncoding defaultTextEncoding = TagTextEncoding::Utf8;
    bool canEncodingBeUsed(TagTextEncoding encoding) const override;
    bool supportsTarget() const override;
    bool supportsMultipleValues(KnownField field) const override;
    TagTargetLevel targetLevel() const override;
 
    void parse(EbmlElement &tagElement, Diagnostics &diag);
    void parse2(EbmlElement &tagElement, MatroskaTagFlags flags, Diagnostics &diag);
    MatroskaTagMaker prepareMaking(Diagnostics &diag);
    void make(std::ostream &stream, Diagnostics &diag);
 
protected:
    IdentifierType internallyGetFieldId(KnownField field) const;
    KnownField internallyGetKnownField(const IdentifierType &id) const;
 
private:
    void parseTargets(EbmlElement &targetsElement, Diagnostics &diag);
};
 
inline MatroskaTag::MatroskaTag()
{
}
 
inline bool MatroskaTag::supportsTarget() const
{
    return true;
}
 
inline bool MatroskaTag::supportsMultipleValues(KnownField) const
{
    return true;
}
 
inline TagTargetLevel MatroskaTag::targetLevel() const
{
    return matroskaTagTargetLevel(m_target.level());
}
 
inline MatroskaTagMaker MatroskaTag::prepareMaking(Diagnostics &diag)
{
    return MatroskaTagMaker(*this, diag);
}
 
inline void MatroskaTag::make(std::ostream &stream, Diagnostics &diag)
{
    prepareMaking(diag).make(stream);
}
 
inline bool MatroskaTag::canEncodingBeUsed(TagTextEncoding encoding) const
{
    return encoding == TagTextEncoding::Utf8;
}
 
} // namespace TagParser
 
#endif // TAG_PARSER_MATROSKATAG_H