122 lines
3.1 KiB
C++
122 lines
3.1 KiB
C++
#ifndef TAG_PARSER_MATROSKATAGFIELD_H
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#define TAG_PARSER_MATROSKATAGFIELD_H
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#include "../generictagfield.h"
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namespace TagParser {
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class EbmlElement;
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class MatroskaTagField;
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class Diagnostics;
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/*!
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* \brief Defines traits for the TagField implementation of the MatroskaTagField class.
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*/
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template <> class TAG_PARSER_EXPORT TagFieldTraits<MatroskaTagField> {
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public:
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using IdentifierType = std::string;
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using TypeInfoType = std::string;
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static bool supportsNestedFields();
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};
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/*!
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* \brief The MatroskaTagField supports nested fields.
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*/
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inline bool TagFieldTraits<MatroskaTagField>::supportsNestedFields()
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{
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return true;
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}
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class TAG_PARSER_EXPORT MatroskaTagFieldMaker {
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friend class MatroskaTagField;
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public:
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void make(std::ostream &stream) const;
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const MatroskaTagField &field() const;
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std::uint64_t requiredSize() const;
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private:
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MatroskaTagFieldMaker(MatroskaTagField &field, Diagnostics &diag);
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MatroskaTagField &m_field;
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std::string m_stringValue;
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const std::string &m_language;
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const std::string &m_languageIETF;
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std::uint64_t m_simpleTagSize;
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std::uint64_t m_totalSize;
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std::vector<MatroskaTagFieldMaker> m_nestedMaker;
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bool m_isBinary;
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};
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/*!
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* \brief Returns the associated field.
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*/
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inline const MatroskaTagField &MatroskaTagFieldMaker::field() const
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{
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return m_field;
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}
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/*!
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* \brief Returns number of bytes which will be written when making the field.
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*/
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inline std::uint64_t MatroskaTagFieldMaker::requiredSize() const
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{
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return m_totalSize;
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}
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class TAG_PARSER_EXPORT MatroskaTagField : public TagField<MatroskaTagField> {
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friend class TagField<MatroskaTagField>;
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public:
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MatroskaTagField();
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MatroskaTagField(const std::string &id, const TagValue &value);
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void reparse(EbmlElement &simpleTagElement, Diagnostics &diag, bool parseNestedFields = true);
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MatroskaTagFieldMaker prepareMaking(Diagnostics &diag);
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void make(std::ostream &stream, Diagnostics &diag);
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bool isAdditionalTypeInfoUsed() const;
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bool supportsNestedFields() const;
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static typename std::string fieldIdFromString(std::string_view idString);
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static std::string fieldIdToString(const std::string &id);
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static void normalizeId(std::string &id);
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};
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/*!
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* \brief Returns whether the additional type info is used.
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*/
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inline bool MatroskaTagField::isAdditionalTypeInfoUsed() const
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{
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return false;
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}
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/*!
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* \brief Returns whether nested fields are supported.
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*/
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inline bool MatroskaTagField::supportsNestedFields() const
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{
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return true;
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}
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/*!
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* \brief Converts the specified ID string representation to an actual ID.
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* \remarks As Matroska field IDs are text strings the string is just passed.
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*/
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inline std::string MatroskaTagField::fieldIdFromString(std::string_view idString)
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{
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return std::string(idString);
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}
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/*!
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* \brief Returns the string representation for the specified \a id.
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* \remarks As Matroska field IDs are text strings the string is just passed.
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*/
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inline std::string MatroskaTagField::fieldIdToString(const std::string &id)
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{
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return id;
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}
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} // namespace TagParser
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#endif // TAG_PARSER_MATROSKATAGFIELD_H
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