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#pragma once
#include <robin_hood.h>
#include <cstdio>
#include <cstring>
#include <filesystem>
#include <glm/glm.hpp>
#include <string>
#include <string_view>
namespace Utils {
enum IoMode {
Read,
WriteTruncate,
WriteAppend,
};
FILE* OpenCstdioFile(const std::filesystem::path& path, IoMode mode, bool binary = false);
FILE* OpenCstdioFile(const char* path, IoMode mode, bool binary = false);
/// Retrieve a whole line (marked by `\n` or EOF) into the buffer. If the line ends with EOF, two things happen:
/// 1. a `\n` character is appended to the line content, emulating as-if the line ended with `\n`.
/// 2. `false` is returned
/// Otherwise, `true` is returned.
///
/// Empty lines are not skipped at all, including the very last empty line if it exists.
bool ReadCstdioLine(FILE* file, std::string& buffer);
/// Same as the other overload, except working with a fixed-size buffer.
/// NOTE: this also gives the length of the line compared to `std::fgets`.
/// `std::fgets` requires us to run `std::strlen` on the output again to find the length
bool ReadCstdioLine(FILE* file, char* buffer, size_t bufferSize, size_t* outLineLength = nullptr);
std::string ReadFileAsString(const std::filesystem::path& path);
constexpr float Abs(float v) noexcept {
return v < 0.0f ? -v : v;
}
bool InRangeInclusive(int n, int lower, int upper);
bool LineContains(glm::ivec2 p1, glm::ivec2 p2, glm::ivec2 candidate);
bool IsColinear(glm::ivec2 p1, glm::ivec2 p2);
template <typename T>
void HashCombine(std::size_t& seed, const T& v) {
seed ^= std::hash<T>{}(v) + 0x9e3779b9 + (seed << 6) + (seed >> 2);
}
std::string MakeRandomNumberedName(const char* tag);
} // namespace Utils
struct StringHash {
using is_transparent = void;
std::size_t operator()(const std::string& key) const { return robin_hood::hash_bytes(key.c_str(), key.size()); }
std::size_t operator()(std::string_view key) const { return robin_hood::hash_bytes(key.data(), key.size()); }
std::size_t operator()(const char* key) const { return robin_hood::hash_bytes(key, std::strlen(key)); }
};
struct StringEqual {
using is_transparent = int;
bool operator()(std::string_view lhs, const std::string& rhs) const {
const std::string_view view = rhs;
return lhs == view;
}
bool operator()(const char* lhs, const std::string& rhs) const {
return std::strcmp(lhs, rhs.c_str()) == 0;
}
bool operator()(const std::string& lhs, const std::string& rhs) const {
return lhs == rhs;
}
};
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