mirror of
https://github.com/ToruNiina/toml11.git
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225 lines
7.5 KiB
C++
225 lines
7.5 KiB
C++
// Copyright Toru Niina 2017.
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// Distributed under the MIT License.
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#ifndef TOML11_STRING_HPP
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#define TOML11_STRING_HPP
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#include <cstdint>
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#include <algorithm>
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#include <string>
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#if __cplusplus >= 201703L
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#if __has_include(<string_view>)
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#include <string_view>
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#endif
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#endif
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namespace toml
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{
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enum class string_t : std::uint8_t
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{
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basic = 0,
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literal = 1,
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};
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struct string
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{
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string() = default;
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~string() = default;
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string(const string& s) = default;
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string(string&& s) = default;
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string& operator=(const string& s) = default;
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string& operator=(string&& s) = default;
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string(const std::string& s): kind(string_t::basic), str(s){}
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string(const std::string& s, string_t k): kind(k), str(s){}
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string(const char* s): kind(string_t::basic), str(s){}
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string(const char* s, string_t k): kind(k), str(s){}
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string(std::string&& s): kind(string_t::basic), str(std::move(s)){}
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string(std::string&& s, string_t k): kind(k), str(std::move(s)){}
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string& operator=(const std::string& s)
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{kind = string_t::basic; str = s; return *this;}
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string& operator=(std::string&& s)
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{kind = string_t::basic; str = std::move(s); return *this;}
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operator std::string& () & noexcept {return str;}
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operator std::string const& () const& noexcept {return str;}
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operator std::string&& () && noexcept {return std::move(str);}
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string& operator+=(const char* rhs) {str += rhs; return *this;}
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string& operator+=(const char rhs) {str += rhs; return *this;}
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string& operator+=(const std::string& rhs) {str += rhs; return *this;}
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string& operator+=(const string& rhs) {str += rhs.str; return *this;}
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#if __cplusplus >= 201703L
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explicit string(std::string_view s): kind(string_t::basic), str(s){}
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string(std::string_view s, string_t k): kind(k), str(s){}
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string& operator=(std::string_view s)
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{kind = string_t::basic; str = s; return *this;}
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explicit operator std::string_view() const noexcept
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{return std::string_view(str);}
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string& operator+=(const std::string_view& rhs) {str += rhs; return *this;}
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#endif
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string_t kind;
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std::string str;
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};
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inline bool operator==(const string& lhs, const string& rhs)
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{
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return lhs.kind == rhs.kind && lhs.str == rhs.str;
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}
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inline bool operator!=(const string& lhs, const string& rhs)
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{
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return !(lhs == rhs);
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}
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inline bool operator<(const string& lhs, const string& rhs)
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{
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return (lhs.kind == rhs.kind) ? (lhs.str < rhs.str) : (lhs.kind < rhs.kind);
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}
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inline bool operator>(const string& lhs, const string& rhs)
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{
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return rhs < lhs;
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}
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inline bool operator<=(const string& lhs, const string& rhs)
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{
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return !(rhs < lhs);
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}
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inline bool operator>=(const string& lhs, const string& rhs)
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{
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return !(lhs < rhs);
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}
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inline bool
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operator==(const string& lhs, const std::string& rhs) {return lhs.str == rhs;}
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inline bool
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operator!=(const string& lhs, const std::string& rhs) {return lhs.str != rhs;}
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inline bool
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operator< (const string& lhs, const std::string& rhs) {return lhs.str < rhs;}
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inline bool
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operator> (const string& lhs, const std::string& rhs) {return lhs.str > rhs;}
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inline bool
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operator<=(const string& lhs, const std::string& rhs) {return lhs.str <= rhs;}
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inline bool
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operator>=(const string& lhs, const std::string& rhs) {return lhs.str >= rhs;}
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inline bool
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operator==(const std::string& lhs, const string& rhs) {return lhs == rhs.str;}
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inline bool
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operator!=(const std::string& lhs, const string& rhs) {return lhs != rhs.str;}
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inline bool
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operator< (const std::string& lhs, const string& rhs) {return lhs < rhs.str;}
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inline bool
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operator> (const std::string& lhs, const string& rhs) {return lhs > rhs.str;}
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inline bool
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operator<=(const std::string& lhs, const string& rhs) {return lhs <= rhs.str;}
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inline bool
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operator>=(const std::string& lhs, const string& rhs) {return lhs >= rhs.str;}
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inline bool
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operator==(const string& lhs, const char* rhs) {return lhs.str == std::string(rhs);}
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inline bool
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operator!=(const string& lhs, const char* rhs) {return lhs.str != std::string(rhs);}
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inline bool
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operator< (const string& lhs, const char* rhs) {return lhs.str < std::string(rhs);}
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inline bool
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operator> (const string& lhs, const char* rhs) {return lhs.str > std::string(rhs);}
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inline bool
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operator<=(const string& lhs, const char* rhs) {return lhs.str <= std::string(rhs);}
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inline bool
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operator>=(const string& lhs, const char* rhs) {return lhs.str >= std::string(rhs);}
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inline bool
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operator==(const char* lhs, const string& rhs) {return std::string(lhs) == rhs.str;}
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inline bool
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operator!=(const char* lhs, const string& rhs) {return std::string(lhs) != rhs.str;}
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inline bool
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operator< (const char* lhs, const string& rhs) {return std::string(lhs) < rhs.str;}
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inline bool
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operator> (const char* lhs, const string& rhs) {return std::string(lhs) > rhs.str;}
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inline bool
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operator<=(const char* lhs, const string& rhs) {return std::string(lhs) <= rhs.str;}
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inline bool
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operator>=(const char* lhs, const string& rhs) {return std::string(lhs) >= rhs.str;}
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template<typename charT, typename traits>
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std::basic_ostream<charT, traits>&
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operator<<(std::basic_ostream<charT, traits>& os, const string& s)
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{
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if(s.kind == string_t::basic)
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{
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if(std::find(s.str.cbegin(), s.str.cend(), '\n') != s.str.cend())
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{
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// it contains newline. make it multiline string.
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os << "\"\"\"\n";
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for(auto i=s.str.cbegin(), e=s.str.cend(); i!=e; ++i)
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{
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switch(*i)
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{
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case '\\': {os << "\\\\"; break;}
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case '\"': {os << "\\\""; break;}
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case '\b': {os << "\\b"; break;}
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case '\t': {os << "\\t"; break;}
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case '\f': {os << "\\f"; break;}
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case '\n': {os << '\n'; break;}
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case '\r':
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{
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// since it is a multiline string,
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// CRLF is not needed to be escaped.
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if(std::next(i) != e && *std::next(i) == '\n')
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{
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os << "\r\n";
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++i;
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}
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else
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{
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os << "\\r";
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}
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break;
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}
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default: {os << *i; break;}
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}
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}
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os << "\\\n\"\"\"";
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return os;
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}
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// no newline. make it inline.
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os << "\"";
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for(const auto c : s.str)
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{
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switch(c)
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{
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case '\\': {os << "\\\\"; break;}
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case '\"': {os << "\\\""; break;}
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case '\b': {os << "\\b"; break;}
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case '\t': {os << "\\t"; break;}
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case '\f': {os << "\\f"; break;}
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case '\n': {os << "\\n"; break;}
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case '\r': {os << "\\r"; break;}
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default : {os << c; break;}
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}
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}
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os << "\"";
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return os;
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}
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// the string `s` is literal-string.
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if(std::find(s.str.cbegin(), s.str.cend(), '\n') != s.str.cend() ||
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std::find(s.str.cbegin(), s.str.cend(), '\'') != s.str.cend() )
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{
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// contains newline or single quote. make it multiline.
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os << "'''\n" << s.str << "'''";
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return os;
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}
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// normal literal string
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os << '\'' << s.str << '\'';
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return os;
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}
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} // toml
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#endif// TOML11_STRING_H
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