Tag Parser 12.0.0
C++ library for reading and writing MP4 (iTunes), ID3, Vorbis, Opus, FLAC and Matroska tags
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positioninset.h
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1#ifndef TAG_PARSER_POSITIONINSET_H
2#define TAG_PARSER_POSITIONINSET_H
3
4#include "./global.h"
5
6#include <c++utilities/conversion/stringconversion.h>
7#include <c++utilities/misc/traits.h>
8
9#include <string>
10
11namespace TagParser {
12
22public:
23 constexpr explicit PositionInSet(std::int32_t position = 0, std::int32_t total = 0);
24 template <typename StringType = std::string,
25 CppUtilities::Traits::EnableIfAny<CppUtilities::Traits::IsSpecializationOf<StringType, std::basic_string>> * = nullptr>
26 PositionInSet(const StringType &numericString);
27
28 constexpr std::int32_t position() const;
29 constexpr std::int32_t total() const;
30 constexpr bool isNull() const;
31 constexpr bool operator==(const PositionInSet &other) const;
32
33 template <typename StringType = std::string,
34 CppUtilities::Traits::EnableIfAny<CppUtilities::Traits::IsSpecializationOf<StringType, std::basic_string>> * = nullptr>
35 StringType toString() const;
36
37private:
38 std::int32_t m_position;
39 std::int32_t m_total;
40};
41
48template <typename StringType, CppUtilities::Traits::EnableIfAny<CppUtilities::Traits::IsSpecializationOf<StringType, std::basic_string>> *>
49PositionInSet::PositionInSet(const StringType &numericString)
50 : m_position(0)
51 , m_total(0)
52{
53 const auto separator = numericString.find('/');
54 if (separator == StringType::npos || separator == numericString.length() - 1) {
55 m_position = CppUtilities::stringToNumber<std::int32_t, StringType>(numericString);
56 } else if (separator == 0) {
57 m_total = CppUtilities::stringToNumber<std::int32_t, StringType>(numericString.substr(1));
58 } else {
59 m_position = CppUtilities::stringToNumber<std::int32_t, StringType>(numericString.substr(0, separator));
60 m_total = CppUtilities::stringToNumber<std::int32_t, StringType>(numericString.substr(separator + 1));
61 }
62}
63
69constexpr inline PositionInSet::PositionInSet(std::int32_t position, std::int32_t total)
70 : m_position(position)
71 , m_total(total)
72{
73}
74
78constexpr inline std::int32_t PositionInSet::position() const
79{
80 return m_position;
81}
82
86constexpr inline std::int32_t PositionInSet::total() const
87{
88 return m_total;
89}
90
94constexpr inline bool PositionInSet::isNull() const
95{
96 return m_position == 0 && m_total == 0;
97}
98
102constexpr inline bool PositionInSet::operator==(const PositionInSet &other) const
103{
104 return m_position == other.m_position && m_total == other.m_total;
105}
106
110template <typename StringType, CppUtilities::Traits::EnableIfAny<CppUtilities::Traits::IsSpecializationOf<StringType, std::basic_string>> *>
111StringType PositionInSet::toString() const
112{
113 std::basic_stringstream<typename StringType::value_type> ss;
114 if (m_position) {
115 ss << m_position;
116 }
117 if (m_total) {
118 ss << '/' << m_total;
119 }
120 return ss.str();
121}
122
123} // namespace TagParser
124
125#endif // TAG_PARSER_POSITIONINSET_H
The PositionInSet class describes the position of an element in a set which consists of a certain num...
constexpr bool operator==(const PositionInSet &other) const
Returns whether this instance equals other.
constexpr std::int32_t position() const
Returns the element position of the current instance.
constexpr std::int32_t total() const
Returns the total element count of the current instance.
constexpr PositionInSet(std::int32_t position=0, std::int32_t total=0)
Constructs a new Position in set of the specified element position and total element count.
StringType toString() const
Returns the string representation of the current PositionInSet.
constexpr bool isNull() const
Returns an indication whether both the element position and total element count is 0.
#define TAG_PARSER_EXPORT
Marks the symbol to be exported by the tagparser library.
Definition global.h:13
Contains all classes and functions of the TagInfo library.
Definition aaccodebook.h:10
constexpr bool operator==(std::uint8_t lhs, FlacMetaDataBlockType type)