110 lines
4.2 KiB
C++
110 lines
4.2 KiB
C++
#pragma once
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#include <cstddef>
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#include <cstring>
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#include <string> // std::char_traits
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namespace mtl {
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class istring;
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constexpr size_t strlen(const char* str) {
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return *str != '\0' ? strlen(str + 1) + 1 : 0;
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}
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class string_view {
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const char* m_str;
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size_t m_size;
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friend class istring;
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public:
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static constexpr size_t npos = -1;
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constexpr string_view(const char* str) : m_str(str), m_size(std::char_traits<char>::length(str)) {}
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constexpr string_view(const char* str, size_t size) : m_str(str), m_size(size) {}
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string_view() : m_str(nullptr), m_size(0) {}
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string_view(const istring& str);
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string_view(const istring& str, size_t size);
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constexpr const char& at(size_t i) const { return m_str[i]; }
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constexpr const char& operator[](size_t i) const { return m_str[i]; }
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constexpr const char& front() const { return m_str[0]; }
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constexpr const char& back() const { return m_str[m_size - 1]; }
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constexpr const char* data() const { return m_str; }
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constexpr const char* c_str() const { return m_str; }
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constexpr bool empty() const { return m_size == 0; }
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constexpr size_t size() const { return m_size; }
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constexpr size_t length() const { return m_size; }
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/**
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* \brief Copy the string to a buffer
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*
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* Copies the string to the buffer pointed to by dest. Will always
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* copy the string from front to back, never in reverse. The strings
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* must not overlap.
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*/
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size_t copy(char* dest, size_t count = npos, size_t pos = 0) const;
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// Search
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size_t find(const istring& str, size_t pos = 0) const;
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size_t find(const string_view& str, size_t pos = 0) const;
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size_t find(char ch, size_t pos = 0) const;
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size_t rfind(const istring& str, size_t pos = npos) const;
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size_t rfind(const string_view&, size_t pos = npos) const;
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size_t rfind(char ch, size_t pos = npos) const;
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size_t find_first_of(const istring& str, size_t pos = 0) const;
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size_t find_first_of(const string_view& str, size_t pos = 0) const;
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size_t find_first_of(char ch, size_t pos = 0) const;
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size_t find_first_not_of(const istring& str, size_t pos = 0) const;
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size_t find_first_not_of(const string_view& str, size_t pos = 0) const;
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size_t find_first_not_of(char ch, size_t pos = 0) const;
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size_t find_last_of(const istring& str, size_t pos = npos) const;
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size_t find_last_of(const string_view& str, size_t pos = npos) const;
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size_t find_last_of(char ch, size_t pos = npos) const;
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size_t find_last_not_of(const istring& str, size_t pos = npos) const;
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size_t find_last_not_of(const string_view& str, size_t pos = npos) const;
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size_t find_last_not_of(char ch, size_t pos = npos) const;
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// Comparison
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int32_t compare(const istring& str) const;
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int32_t compare(size_t pos, size_t count, const istring& str) const;
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int32_t compare(size_t pos1, size_t count1, istring& str, size_t pos2, size_t count2 = npos) const;
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int32_t compare(const string_view& str) const;
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int32_t compare(size_t pos, size_t count, const string_view& str) const;
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int32_t compare(size_t pos1, size_t count1, const string_view& str, size_t pos2, size_t count2 = npos) const;
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friend bool operator==(const istring& lhs, const istring& rhs);
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friend bool operator!=(const istring& lhs, const istring& rhs);
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friend bool operator<(const istring& lhs, const istring& rhs);
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friend bool operator<=(const istring& lhs, const istring& rhs);
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friend bool operator>(const istring& lhs, const istring& rhs);
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friend bool operator>=(const istring& lhs, const istring& rhs);
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friend bool operator==(const istring& lhs, const string_view& rhs);
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friend bool operator==(const string_view& lhs, const istring& rhs);
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friend bool operator!=(const istring& lhs, const string_view& rhs);
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friend bool operator!=(const string_view& lhs, const istring& rhs);
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friend bool operator<(const istring& lhs, const string_view& rhs);
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friend bool operator<(const string_view& lhs, const istring& rhs);
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friend bool operator<=(const istring& lhs, const string_view& rhs);
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friend bool operator<=(const string_view& lhs, const istring& rhs);
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friend bool operator>(const istring& lhs, const string_view& rhs);
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friend bool operator>(const string_view& lhs, const istring& rhs);
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friend bool operator>=(const istring& lhs, const string_view& rhs);
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friend bool operator>=(const string_view& lhs, const istring& rhs);
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};
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} // namespace mtl
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