mirror of
https://github.com/gbdev/rgbds.git
synced 2025-11-20 18:22:07 +00:00
72 lines
1.8 KiB
C++
72 lines
1.8 KiB
C++
// SPDX-License-Identifier: MIT
|
|
|
|
#ifndef RGBDS_UTIL_HPP
|
|
#define RGBDS_UTIL_HPP
|
|
|
|
#include <algorithm>
|
|
#include <numeric>
|
|
#include <optional>
|
|
#include <stddef.h>
|
|
#include <stdint.h>
|
|
#include <string>
|
|
#include <unordered_map>
|
|
|
|
#include "helpers.hpp"
|
|
|
|
enum NumberBase {
|
|
BASE_AUTO = 0,
|
|
BASE_2 = 2,
|
|
BASE_8 = 8,
|
|
BASE_10 = 10,
|
|
BASE_16 = 16,
|
|
};
|
|
|
|
// Locale-independent character class functions
|
|
bool isNewline(int c);
|
|
bool isBlankSpace(int c);
|
|
bool isWhitespace(int c);
|
|
bool isPrintable(int c);
|
|
bool isUpper(int c);
|
|
bool isLower(int c);
|
|
bool isLetter(int c);
|
|
bool isDigit(int c);
|
|
bool isBinDigit(int c);
|
|
bool isOctDigit(int c);
|
|
bool isHexDigit(int c);
|
|
bool isAlphanumeric(int c);
|
|
|
|
// Locale-independent character transform functions
|
|
char toLower(char c);
|
|
char toUpper(char c);
|
|
|
|
bool startsIdentifier(int c);
|
|
bool continuesIdentifier(int c);
|
|
|
|
uint8_t parseHexDigit(int c);
|
|
std::optional<uint64_t> parseNumber(char const *&str, NumberBase base = BASE_AUTO);
|
|
std::optional<uint64_t> parseWholeNumber(char const *str, NumberBase base = BASE_AUTO);
|
|
|
|
char const *printChar(int c);
|
|
|
|
struct Uppercase {
|
|
// FNV-1a hash of an uppercased string
|
|
constexpr size_t operator()(std::string const &str) const {
|
|
return std::accumulate(RANGE(str), 0x811C9DC5, [](size_t hash, char c) {
|
|
return (hash ^ toUpper(c)) * 16777619;
|
|
});
|
|
}
|
|
|
|
// Compare two strings without case-sensitivity (by converting to uppercase)
|
|
constexpr bool operator()(std::string const &str1, std::string const &str2) const {
|
|
return std::equal(RANGE(str1), RANGE(str2), [](char c1, char c2) {
|
|
return toUpper(c1) == toUpper(c2);
|
|
});
|
|
}
|
|
};
|
|
|
|
// An unordered map from case-insensitive `std::string` keys to `ItemT` items
|
|
template<typename ItemT>
|
|
using UpperMap = std::unordered_map<std::string, ItemT, Uppercase, Uppercase>;
|
|
|
|
#endif // RGBDS_UTIL_HPP
|