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#pragma once
#include <cstdlib>
#include <libtcod/console.hpp>
#include <string>
#ifdef _MSC_VER
#define KNOWN_DEPRECATION _Pragma("warning(suppress : 4996)")
#else
#define KNOWN_DEPRECATION
#endif // _MSC_VER
/***************************************************************************
@brief Return the path to a test data file.
@param path A relative path to the test data.
@return std::string
*/
static inline std::string get_file(const std::string& path) {
static const char* DEFAULT_DIR = "data";
KNOWN_DEPRECATION const char* data_dir = std::getenv("DATA_DIR"); // Ignore MSVC warning.
if (!data_dir) {
data_dir = DEFAULT_DIR;
}
return std::string(data_dir) + "/" + path;
}
/*****************************************************************************
@brief Convert a console to a multi-line string, used for tests.
*/
static inline std::string to_string(const TCOD_Console& console) {
std::string result;
for (int y = 0; y < console.h; ++y) {
if (y != 0) {
result += '\n';
}
for (int x = 0; x < console.w; ++x) {
result += static_cast<char>(console.at(x, y).ch);
}
}
return result;
}
/***************************************************************************
@brief Convert a Unicode codepoint to a UTF-8 multi-byte string.
*/
static inline auto ucs4_to_utf8(int ucs4) -> std::string {
char utf8[4];
if (ucs4 < 0) {
throw std::invalid_argument("Invalid codepoint.");
} else if (ucs4 <= 0x7F) {
utf8[0] = static_cast<uint8_t>(ucs4);
return std::string(utf8, 1);
} else if (ucs4 <= 0x07FF) {
utf8[0] = 0b11000000 | static_cast<uint8_t>((ucs4 & 0b11111'000000) >> 6);
utf8[1] = 0b10000000 | static_cast<uint8_t>((ucs4 & 0b00000'111111) >> 0);
return std::string(utf8, 2);
} else if (ucs4 <= 0xFFFF) {
utf8[0] = 0b11100000 | static_cast<uint8_t>((ucs4 & 0b1111'000000'000000) >> 12);
utf8[1] = 0b10000000 | static_cast<uint8_t>((ucs4 & 0b0000'111111'000000) >> 6);
utf8[2] = 0b10000000 | static_cast<uint8_t>((ucs4 & 0b0000'000000'111111) >> 0);
return std::string(utf8, 3);
} else if (ucs4 <= 0x10FFFF) {
utf8[0] = 0b11110000 | static_cast<uint8_t>((ucs4 & 0b111'000000'000000'000000) >> 18);
utf8[1] = 0b10000000 | static_cast<uint8_t>((ucs4 & 0b000'111111'000000'000000) >> 12);
utf8[2] = 0b10000000 | static_cast<uint8_t>((ucs4 & 0b000'000000'111111'000000) >> 6);
utf8[3] = 0b10000000 | static_cast<uint8_t>((ucs4 & 0b000'000000'000000'111111) >> 0);
return std::string(utf8, 4);
}
throw std::invalid_argument("Invalid codepoint.");
}
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