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https://github.com/RetroDECK/Duckstation.git
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145 lines
4.1 KiB
C++
145 lines
4.1 KiB
C++
#pragma once
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#include "types.h"
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#include <cstdarg>
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#include <cstddef>
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#include <cstring>
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#include <iomanip>
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#include <optional>
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#include <string>
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#include <string_view>
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#include <vector>
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#if defined(__has_include) && __has_include(<charconv>)
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#include <charconv>
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#ifndef _MSC_VER
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#include <sstream>
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#endif
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#else
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#include <sstream>
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#endif
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namespace StringUtil {
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/// Constructs a std::string from a format string.
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std::string StdStringFromFormat(const char* format, ...);
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std::string StdStringFromFormatV(const char* format, std::va_list ap);
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/// Checks if a wildcard matches a search string.
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bool WildcardMatch(const char* subject, const char* mask, bool case_sensitive = true);
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/// Safe version of strlcpy.
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std::size_t Strlcpy(char* dst, const char* src, std::size_t size);
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/// Strlcpy from string_view.
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std::size_t Strlcpy(char* dst, const std::string_view& src, std::size_t size);
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/// Platform-independent strcasecmp
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static inline int Strcasecmp(const char* s1, const char* s2)
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{
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#ifdef _MSC_VER
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return _stricmp(s1, s2);
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#else
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return strcasecmp(s1, s2);
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#endif
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}
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/// Platform-independent strcasecmp
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static inline int Strncasecmp(const char* s1, const char* s2, std::size_t n)
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{
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#ifdef _MSC_VER
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return _strnicmp(s1, s2, n);
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#else
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return strncasecmp(s1, s2, n);
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#endif
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}
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/// Wrapper arond std::from_chars
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template<typename T, std::enable_if_t<std::is_integral<T>::value, bool> = true>
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inline std::optional<T> FromChars(const std::string_view& str, int base = 10)
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{
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T value;
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#if defined(__has_include) && __has_include(<charconv>)
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const std::from_chars_result result = std::from_chars(str.data(), str.data() + str.length(), value, base);
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if (result.ec != std::errc())
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return std::nullopt;
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#else
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std::string temp(str);
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std::istringstream ss(temp);
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ss >> std::setbase(base) >> value;
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if (ss.fail())
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return std::nullopt;
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#endif
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return value;
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}
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template<typename T, std::enable_if_t<std::is_floating_point<T>::value, bool> = true>
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inline std::optional<T> FromChars(const std::string_view& str)
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{
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T value;
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#if defined(__has_include) && __has_include(<charconv>) && defined(_MSC_VER)
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const std::from_chars_result result = std::from_chars(str.data(), str.data() + str.length(), value);
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if (result.ec != std::errc())
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return std::nullopt;
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#else
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/// libstdc++ does not support from_chars with floats yet
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std::string temp(str);
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std::istringstream ss(temp);
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ss >> value;
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if (ss.fail())
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return std::nullopt;
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#endif
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return value;
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}
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/// Explicit override for booleans
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template<>
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inline std::optional<bool> FromChars(const std::string_view& str, int base)
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{
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if (Strncasecmp("true", str.data(), str.length()) == 0 || Strncasecmp("yes", str.data(), str.length()) == 0 ||
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Strncasecmp("on", str.data(), str.length()) == 0 || Strncasecmp("1", str.data(), str.length()) == 0)
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{
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return true;
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}
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if (Strncasecmp("false", str.data(), str.length()) == 0 || Strncasecmp("no", str.data(), str.length()) == 0 ||
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Strncasecmp("off", str.data(), str.length()) == 0 || Strncasecmp("0", str.data(), str.length()) == 0)
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{
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return false;
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}
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return std::nullopt;
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}
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/// Encode/decode hexadecimal byte buffers
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std::optional<std::vector<u8>> DecodeHex(const std::string_view& str);
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std::string EncodeHex(const u8* data, int length);
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/// starts_with from C++20
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ALWAYS_INLINE static bool StartsWith(const std::string_view& str, const char* prefix)
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{
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return (str.compare(0, std::strlen(prefix), prefix) == 0);
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}
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ALWAYS_INLINE static bool EndsWith(const std::string_view& str, const char* suffix)
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{
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const std::size_t suffix_length = std::strlen(suffix);
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return (str.length() >= suffix_length && str.compare(str.length() - suffix_length, suffix_length, suffix) == 0);
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}
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#ifdef WIN32
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/// Converts the specified UTF-8 string to a wide string.
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std::wstring UTF8StringToWideString(const std::string_view& str);
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bool UTF8StringToWideString(std::wstring& dest, const std::string_view& str);
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/// Converts the specified wide string to a UTF-8 string.
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std::string WideStringToUTF8String(const std::wstring_view& str);
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bool WideStringToUTF8String(std::string& dest, const std::wstring_view& str);
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#endif
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} // namespace StringUtil
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