#ifdef __linux__

// enumerate the set of thread siblings, num entries is num cores

std::unordered_set<std::string> siblings;

for (uint32_t cpu=0; cpu < UINT32_MAX; ++cpu) {

std::ifstream thread_siblings("/sys/devices/system/cpu"

+ std::to_string(cpu) + "/topology/thread_siblings");

if (!thread_siblings.is_open()) {

break; // no more cpus

}

std::string line;

if (std::getline(thread_siblings, line)) {

siblings.insert(line);

}

}

if (siblings.size() > 0) {

return static_cast<int32_t>(siblings.size());

}

#elif defined(__APPLE__) && defined(__MACH__)

int32_t num_physical_cores;

size_t len = sizeof(num_physical_cores);

int result = sysctlbyname("hw.perflevel0.physicalcpu", &num_physical_cores, &len, NULL, 0);

if (result == 0) {

return num_physical_cores;

}

result = sysctlbyname("hw.physicalcpu", &num_physical_cores, &len, NULL, 0);

if (result == 0) {

return num_physical_cores;

}

#elif defined(_WIN32)

//TODO: Implement

#endif

unsigned int n_threads = std::thread::hardware_concurrency();

return n_threads > 0 ? (n_threads <= 4 ? n_threads : n_threads / 2) : 4;

std::size_t input_len = input.length();

std::size_t output_idx = 0;

for (std::size_t input_idx = 0; input_idx < input_len; ++input_idx) {

if (input[input_idx] == '\\' && input_idx + 1 < input_len) {

switch (input[++input_idx]) {

case 'n': input[output_idx++] = '\n'; break;

case 'r': input[output_idx++] = '\r'; break;

case 't': input[output_idx++] = '\t'; break;

case '\'': input[output_idx++] = '\''; break;

case '\"': input[output_idx++] = '\"'; break;

case '\\': input[output_idx++] = '\\'; break;

default: input[output_idx++] = '\\';

input[output_idx++] = input[input_idx]; break;

}

} else {

input[output_idx++] = input[input_idx];

}

}

input.resize(output_idx);

bool invalid_param = false;

bool escape_prompt = false;

std::string arg;

gpt_params default_params;

const std::string arg_prefix = "--";

for (int i = 1; i < argc; i++) {

arg = argv[i];

if (arg.compare(0, arg_prefix.size(), arg_prefix) == 0) {

std::replace(arg.begin(), arg.end(), '_', '-');

}

if (arg == "-s" || arg == "--seed") {

if (++i >= argc) {

invalid_param = true;

break;

}

params.seed = std::stoul(argv[i]);

} else if (arg == "-t" || arg == "--threads") {

if (++i >= argc) {

invalid_param = true;

break;

}

params.n_threads = std::stoi(argv[i]);

if (params.n_threads <= 0) {

params.n_threads = std::thread::hardware_concurrency();

}

} else if (arg == "-p" || arg == "--prompt") {

if (++i >= argc) {

invalid_param = true;

break;

}

params.prompt = argv[i];

} else if (arg == "-e") {

escape_prompt = true;

} else if (arg == "--prompt-cache") {

if (++i >= argc) {

invalid_param = true;

break;

}

params.path_prompt_cache = argv[i];

} else if (arg == "--prompt-cache-all") {

params.prompt_cache_all = true;

} else if (arg == "--prompt-cache-ro") {

params.prompt_cache_ro = true;

} else if (arg == "-f" || arg == "--file") {

if (++i >= argc) {

invalid_param = true;

break;

}

std::ifstream file(argv[i]);

if (!file) {

fprintf(stderr, "error: failed to open file '%s'\n", argv[i]);

invalid_param = true;

break;

}

std::copy(std::istreambuf_iterator<char>(file), std::istreambuf_iterator<char>(), back_inserter(params.prompt));

if (params.prompt.back() == '\n') {

params.prompt.pop_back();

}

} else if (arg == "-n" || arg == "--n-predict") {

if (++i >= argc) {

invalid_param = true;

break;

}

params.n_predict = std::stoi(argv[i]);

} else if (arg == "--top-k") {

if (++i >= argc) {

invalid_param = true;

break;

}

params.top_k = std::stoi(argv[i]);

} else if (arg == "-c" || arg == "--ctx-size") {

if (++i >= argc) {

invalid_param = true;

break;

}

params.n_ctx = std::stoi(argv[i]);

} else if (arg == "-gqa" || arg == "--gqa") {

if (++i >= argc) {

invalid_param = true;

break;

}

params.n_gqa = std::stoi(argv[i]);

} else if (arg == "-eps" || arg == "--rms-norm-eps") {

if (++i >= argc) {

invalid_param = true;

break;

}

params.rms_norm_eps = std::stof(argv[i]);

} else if (arg == "--rope-freq-base") {

if (++i >= argc) {

invalid_param = true;

break;

}

params.rope_freq_base = std::stof(argv[i]);

} else if (arg == "--rope-freq-scale") {

if (++i >= argc) {

invalid_param = true;

break;

}

params.rope_freq_scale = std::stof(argv[i]);

} else if (arg == "--memory-f32") {

params.memory_f16 = false;

} else if (arg == "--top-p") {

if (++i >= argc) {

invalid_param = true;

break;

}

params.top_p = std::stof(argv[i]);

} else if (arg == "--temp") {

if (++i >= argc) {

invalid_param = true;

break;

}

params.temp = std::stof(argv[i]);

} else if (arg == "--tfs") {

if (++i >= argc) {

invalid_param = true;

break;

}

params.tfs_z = std::stof(argv[i]);

} else if (arg == "--typical") {

if (++i >= argc) {

invalid_param = true;

break;

}

params.typical_p = std::stof(argv[i]);

} else if (arg == "--repeat-last-n") {

if (++i >= argc) {

invalid_param = true;

break;

}

params.repeat_last_n = std::stoi(argv[i]);

} else if (arg == "--repeat-penalty") {

if (++i >= argc) {

invalid_param = true;

break;

}

params.repeat_penalty = std::stof(argv[i]);

} else if (arg == "--frequency-penalty") {

if (++i >= argc) {

invalid_param = true;

break;

}

params.frequency_penalty = std::stof(argv[i]);

} else if (arg == "--presence-penalty") {

if (++i >= argc) {

invalid_param = true;

break;

}

params.presence_penalty = std::stof(argv[i]);

} else if (arg == "--mirostat") {

if (++i >= argc) {

invalid_param = true;

break;

}

params.mirostat = std::stoi(argv[i]);

} else if (arg == "--mirostat-lr") {

if (++i >= argc) {

invalid_param = true;

break;

}

params.mirostat_eta = std::stof(argv[i]);

} else if (arg == "--mirostat-ent") {

if (++i >= argc) {

invalid_param = true;

break;

}

params.mirostat_tau = std::stof(argv[i]);

} else if (arg == "--cfg-negative-prompt") {

if (++i >= argc) {

invalid_param = true;

break;

}

params.cfg_negative_prompt = argv[i];

} else if (arg == "--cfg-scale") {

if (++i >= argc) {

invalid_param = true;

break;

}

params.cfg_scale = std::stof(argv[i]);

} else if (arg == "-b" || arg == "--batch-size") {

if (++i >= argc) {

invalid_param = true;

break;

}

params.n_batch = std::stoi(argv[i]);

params.n_batch = std::min(512, params.n_batch);

} else if (arg == "--keep") {

if (++i >= argc) {

invalid_param = true;

break;

}

params.n_keep = std::stoi(argv[i]);

} else if (arg == "--chunks") {

if (++i >= argc) {

invalid_param = true;

break;

}

params.n_chunks = std::stoi(argv[i]);

} else if (arg == "-m" || arg == "--model") {

if (++i >= argc) {

invalid_param = true;

break;

}

params.model = argv[i];

} else if (arg == "-a" || arg == "--alias") {

if (++i >= argc) {

invalid_param = true;

break;

}

params.model_alias = argv[i];

} else if (arg == "--lora") {

if (++i >= argc) {

invalid_param = true;

break;

}

params.lora_adapter = argv[i];

params.use_mmap = false;

} else if (arg == "--lora-base") {

if (++i >= argc) {

invalid_param = true;

break;

}

params.lora_base = argv[i];

} else if (arg == "-i" || arg == "--interactive") {

params.interactive = true;

} else if (arg == "--embedding") {

params.embedding = true;

} else if (arg == "--interactive-first") {

params.interactive_first = true;

} else if (arg == "-ins" || arg == "--instruct") {

params.instruct = true;

} else if (arg == "--multiline-input") {

params.multiline_input = true;

} else if (arg == "--color") {

params.use_color = true;

} else if (arg == "--mlock") {

params.use_mlock = true;

} else if (arg == "--gpu-layers" || arg == "-ngl" || arg == "--n-gpu-layers") {

if (++i >= argc) {

invalid_param = true;

break;

}

#ifdef LLAMA_SUPPORTS_GPU_OFFLOAD

params.n_gpu_layers = std::stoi(argv[i]);

#else

fprintf(stderr, "warning: not compiled with GPU offload support, --n-gpu-layers option will be ignored\n");

fprintf(stderr, "warning: see main README.md for information on enabling GPU BLAS support\n");

#endif

} else if (arg == "--main-gpu" || arg == "-mg") {

if (++i >= argc) {

invalid_param = true;

break;

}

#ifdef GGML_USE_CUBLAS

params.main_gpu = std::stoi(argv[i]);

#else

fprintf(stderr, "warning: llama.cpp was compiled without cuBLAS. It is not possible to set a main GPU.\n");

#endif

} else if (arg == "--tensor-split" || arg == "-ts") {

if (++i >= argc) {

invalid_param = true;

break;

}

#ifdef GGML_USE_CUBLAS

std::string arg_next = argv[i];

// split string by , and /

const std::regex regex{R"([,/]+)"};

std::sregex_token_iterator it{arg_next.begin(), arg_next.end(), regex, -1};

std::vector<std::string> split_arg{it, {}};

GGML_ASSERT(split_arg.size() <= LLAMA_MAX_DEVICES);

for (size_t i = 0; i < LLAMA_MAX_DEVICES; ++i) {

if (i < split_arg.size()) {

params.tensor_split[i] = std::stof(split_arg[i]);

} else {

params.tensor_split[i] = 0.0f;

}

}

#else

fprintf(stderr, "warning: llama.cpp was compiled without cuBLAS. It is not possible to set a tensor split.\n");

#endif // GGML_USE_CUBLAS

} else if (arg == "--low-vram" || arg == "-lv") {

#ifdef GGML_USE_CUBLAS

params.low_vram = true;

#else

fprintf(stderr, "warning: llama.cpp was compiled without cuBLAS. It is not possible to set lower vram usage.\n");

#endif // GGML_USE_CUBLAS

} else if (arg == "--no-mmap") {

params.use_mmap = false;

} else if (arg == "--mtest") {

params.mem_test = true;

} else if (arg == "--numa") {

params.numa = true;

} else if (arg == "--export") {

params.export_cgraph = true;

} else if (arg == "--verbose-prompt") {

params.verbose_prompt = true;

} else if (arg == "-r" || arg == "--reverse-prompt") {

if (++i >= argc) {

invalid_param = true;

break;

}

params.antiprompt.push_back(argv[i]);

} else if (arg == "--perplexity") {

params.perplexity = true;

} else if (arg == "--perplexity-lines") {

params.perplexity_lines = true;

} else if (arg == "--ignore-eos") {

params.logit_bias[llama_token_eos()] = -INFINITY;

} else if (arg == "--no-penalize-nl") {

params.penalize_nl = false;

} else if (arg == "-l" || arg == "--logit-bias") {

if (++i >= argc) {

invalid_param = true;

break;

}

std::stringstream ss(argv[i]);

llama_token key;

char sign;

std::string value_str;

try {

if (ss >> key && ss >> sign && std::getline(ss, value_str) && (sign == '+' || sign == '-')) {

params.logit_bias[key] = std::stof(value_str) * ((sign == '-') ? -1.0f : 1.0f);

} else {

throw std::exception();

}

} catch (const std::exception&) {

invalid_param = true;

break;

}

} else if (arg == "-h" || arg == "--help") {

gpt_print_usage(argc, argv, default_params);

exit(0);

} else if (arg == "--random-prompt") {

params.random_prompt = true;

} else if (arg == "--in-prefix") {

if (++i >= argc) {

invalid_param = true;

break;

}

params.input_prefix = argv[i];

} else if (arg == "--in-suffix") {

if (++i >= argc) {

invalid_param = true;

break;

}

params.input_suffix = argv[i];

} else if (arg == "--grammar") {

if (++i >= argc) {

invalid_param = true;

break;

}

params.grammar = argv[i];

} else if (arg == "--grammar-file") {

if (++i >= argc) {

invalid_param = true;

break;

}

std::ifstream file(argv[i]);

if (!file) {

fprintf(stderr, "error: failed to open file '%s'\n", argv[i]);

invalid_param = true;

break;

}

std::copy(

std::istreambuf_iterator<char>(file),

std::istreambuf_iterator<char>(),

std::back_inserter(params.grammar)

);

} else {

fprintf(stderr, "error: unknown argument: %s\n", arg.c_str());

gpt_print_usage(argc, argv, default_params);

exit(1);

}

}

if (invalid_param) {

fprintf(stderr, "error: invalid parameter for argument: %s\n", arg.c_str());

gpt_print_usage(argc, argv, default_params);

exit(1);

}

if (params.prompt_cache_all &&

(params.interactive || params.interactive_first ||

params.instruct)) {

fprintf(stderr, "error: --prompt-cache-all not supported in interactive mode yet\n");

gpt_print_usage(argc, argv, default_params);

exit(1);

}

if (escape_prompt) {

process_escapes(params.prompt);

process_escapes(params.input_prefix);

process_escapes(params.input_suffix);

}

return true;

fprintf(stdout, "usage: %s [options]\n", argv[0]);

fprintf(stdout, "\n");

fprintf(stdout, "options:\n");

fprintf(stdout, " -h, --help show this help message and exit\n");

fprintf(stdout, " -i, --interactive run in interactive mode\n");

fprintf(stdout, " --interactive-first run in interactive mode and wait for input right away\n");

fprintf(stdout, " -ins, --instruct run in instruction mode (use with Alpaca models)\n");

fprintf(stdout, " --multiline-input allows you to write or paste multiple lines without ending each in '\\'\n");

fprintf(stdout, " -r PROMPT, --reverse-prompt PROMPT\n");

fprintf(stdout, " halt generation at PROMPT, return control in interactive mode\n");

fprintf(stdout, " (can be specified more than once for multiple prompts).\n");

fprintf(stdout, " --color colorise output to distinguish prompt and user input from generations\n");

fprintf(stdout, " -s SEED, --seed SEED RNG seed (default: -1, use random seed for < 0)\n");

fprintf(stdout, " -t N, --threads N number of threads to use during computation (default: %d)\n", params.n_threads);

fprintf(stdout, " -p PROMPT, --prompt PROMPT\n");

fprintf(stdout, " prompt to start generation with (default: empty)\n");

fprintf(stdout, " -e process prompt escapes sequences (\\n, \\r, \\t, \\', \\\", \\\\)\n");

fprintf(stdout, " --prompt-cache FNAME file to cache prompt state for faster startup (default: none)\n");

fprintf(stdout, " --prompt-cache-all if specified, saves user input and generations to cache as well.\n");

fprintf(stdout, " not supported with --interactive or other interactive options\n");

fprintf(stdout, " --prompt-cache-ro if specified, uses the prompt cache but does not update it.\n");

fprintf(stdout, " --random-prompt start with a randomized prompt.\n");

fprintf(stdout, " --in-prefix STRING string to prefix user inputs with (default: empty)\n");

fprintf(stdout, " --in-suffix STRING string to suffix after user inputs with (default: empty)\n");

fprintf(stdout, " -f FNAME, --file FNAME\n");

fprintf(stdout, " prompt file to start generation.\n");

fprintf(stdout, " -n N, --n-predict N number of tokens to predict (default: %d, -1 = infinity)\n", params.n_predict);

fprintf(stdout, " -c N, --ctx-size N size of the prompt context (default: %d)\n", params.n_ctx);

fprintf(stdout, " -b N, --batch-size N batch size for prompt processing (default: %d)\n", params.n_batch);

fprintf(stdout, " -gqa N, --gqa N grouped-query attention factor (TEMP!!! use 8 for LLaMAv2 70B) (default: %d)\n", params.n_gqa);

fprintf(stdout, " -eps N, --rms-norm-eps N rms norm eps (TEMP!!! use 1e-5 for LLaMAv2) (default: %.1e)\n", params.rms_norm_eps);

fprintf(stdout, " --top-k N top-k sampling (default: %d, 0 = disabled)\n", params.top_k);

fprintf(stdout, " --top-p N top-p sampling (default: %.1f, 1.0 = disabled)\n", (double)params.top_p);

fprintf(stdout, " --tfs N tail free sampling, parameter z (default: %.1f, 1.0 = disabled)\n", (double)params.tfs_z);

fprintf(stdout, " --typical N locally typical sampling, parameter p (default: %.1f, 1.0 = disabled)\n", (double)params.typical_p);

fprintf(stdout, " --repeat-last-n N last n tokens to consider for penalize (default: %d, 0 = disabled, -1 = ctx_size)\n", params.repeat_last_n);

fprintf(stdout, " --repeat-penalty N penalize repeat sequence of tokens (default: %.1f, 1.0 = disabled)\n", (double)params.repeat_penalty);

fprintf(stdout, " --presence-penalty N repeat alpha presence penalty (default: %.1f, 0.0 = disabled)\n", (double)params.presence_penalty);

fprintf(stdout, " --frequency-penalty N repeat alpha frequency penalty (default: %.1f, 0.0 = disabled)\n", (double)params.frequency_penalty);

fprintf(stdout, " --mirostat N use Mirostat sampling.\n");

fprintf(stdout, " Top K, Nucleus, Tail Free and Locally Typical samplers are ignored if used.\n");

fprintf(stdout, " (default: %d, 0 = disabled, 1 = Mirostat, 2 = Mirostat 2.0)\n", params.mirostat);

fprintf(stdout, " --mirostat-lr N Mirostat learning rate, parameter eta (default: %.1f)\n", (double)params.mirostat_eta);

fprintf(stdout, " --mirostat-ent N Mirostat target entropy, parameter tau (default: %.1f)\n", (double)params.mirostat_tau);

fprintf(stdout, " -l TOKEN_ID(+/-)BIAS, --logit-bias TOKEN_ID(+/-)BIAS\n");

fprintf(stdout, " modifies the likelihood of token appearing in the completion,\n");

fprintf(stdout, " i.e. `--logit-bias 15043+1` to increase likelihood of token ' Hello',\n");

fprintf(stdout, " or `--logit-bias 15043-1` to decrease likelihood of token ' Hello'\n");

fprintf(stdout, " --grammar GRAMMAR BNF-like grammar to constrain generations (see samples in grammars/ dir)\n");

fprintf(stdout, " --grammar-file FNAME file to read grammar from\n");

fprintf(stdout, " --cfg-negative-prompt PROMPT \n");

fprintf(stdout, " negative prompt to use for guidance. (default: empty)\n");

fprintf(stdout, " --cfg-scale N strength of guidance (default: %f, 1.0 = disable)\n", params.cfg_scale);

fprintf(stdout, " --rope-freq-base N RoPE base frequency (default: %.1f)\n", params.rope_freq_base);

fprintf(stdout, " --rope-freq-scale N RoPE frequency scaling factor (default: %g)\n", params.rope_freq_scale);

fprintf(stdout, " --ignore-eos ignore end of stream token and continue generating (implies --logit-bias 2-inf)\n");

fprintf(stdout, " --no-penalize-nl do not penalize newline token\n");

fprintf(stdout, " --memory-f32 use f32 instead of f16 for memory key+value (default: disabled)\n");

fprintf(stdout, " not recommended: doubles context memory required and no measurable increase in quality\n");

fprintf(stdout, " --temp N temperature (default: %.1f)\n", (double)params.temp);

fprintf(stdout, " --perplexity compute perplexity over each ctx window of the prompt\n");

fprintf(stdout, " --perplexity-lines compute perplexity over each line of the prompt\n");

fprintf(stdout, " --keep number of tokens to keep from the initial prompt (default: %d, -1 = all)\n", params.n_keep);

fprintf(stdout, " --chunks N max number of chunks to process (default: %d, -1 = all)\n", params.n_chunks);

if (llama_mlock_supported()) {

fprintf(stdout, " --mlock force system to keep model in RAM rather than swapping or compressing\n");

}

if (llama_mmap_supported()) {

fprintf(stdout, " --no-mmap do not memory-map model (slower load but may reduce pageouts if not using mlock)\n");

}

fprintf(stdout, " --numa attempt optimizations that help on some NUMA systems\n");

fprintf(stdout, " if run without this previously, it is recommended to drop the system page cache before using this\n");

fprintf(stdout, " see https://github.com/ggerganov/llama.cpp/issues/1437\n");

#ifdef LLAMA_SUPPORTS_GPU_OFFLOAD

fprintf(stdout, " -ngl N, --n-gpu-layers N\n");

fprintf(stdout, " number of layers to store in VRAM\n");

fprintf(stdout, " -ts SPLIT --tensor-split SPLIT\n");

fprintf(stdout, " how to split tensors across multiple GPUs, comma-separated list of proportions, e.g. 3,1\n");

fprintf(stdout, " -mg i, --main-gpu i the GPU to use for scratch and small tensors\n" );

fprintf(stdout, " -lv, --low-vram don't allocate VRAM scratch buffer\n" );

#endif

fprintf(stdout, " --mtest compute maximum memory usage\n");

fprintf(stdout, " --export export the computation graph to 'llama.ggml'\n");

fprintf(stdout, " --verbose-prompt print prompt before generation\n");

fprintf(stdout, " --lora FNAME apply LoRA adapter (implies --no-mmap)\n");

fprintf(stdout, " --lora-base FNAME optional model to use as a base for the layers modified by the LoRA adapter\n");

fprintf(stdout, " -m FNAME, --model FNAME\n");

fprintf(stdout, " model path (default: %s)\n", params.model.c_str());

fprintf(stdout, "\n");

const int r = rng() % 10;

switch (r) {

case 0: return "So";

case 1: return "Once upon a time";

case 2: return "When";

case 3: return "The";

case 4: return "After";

case 5: return "If";

case 6: return "import";

case 7: return "He";

case 8: return "She";

case 9: return "They";

default: return "To";

}

return "The";

// initialize to prompt numer of chars, since n_tokens <= n_prompt_chars

std::vector<llama_token> res(text.size() + (int) add_bos);

const int n = llama_tokenize(ctx, text.c_str(), res.data(), res.size(), add_bos);

assert(n >= 0);

res.resize(n);

return res;

auto lparams = llama_context_default_params();

lparams.n_ctx = params.n_ctx;

lparams.n_batch = params.n_batch;

lparams.n_gqa = params.n_gqa;

lparams.rms_norm_eps = params.rms_norm_eps;

lparams.n_gpu_layers = params.n_gpu_layers;

lparams.main_gpu = params.main_gpu;

lparams.tensor_split = params.tensor_split;

lparams.low_vram = params.low_vram;

lparams.seed = params.seed;

lparams.f16_kv = params.memory_f16;

lparams.use_mmap = params.use_mmap;

lparams.use_mlock = params.use_mlock;

lparams.logits_all = params.perplexity;

lparams.embedding = params.embedding;

lparams.rope_freq_base = params.rope_freq_base;

lparams.rope_freq_scale = params.rope_freq_scale;

return lparams;

auto lparams = llama_context_params_from_gpt_params(params);

llama_model * model = llama_load_model_from_file(params.model.c_str(), lparams);

if (model == NULL) {

fprintf(stderr, "%s: error: failed to load model '%s'\n", __func__, params.model.c_str());

return std::make_tuple(nullptr, nullptr);

}

llama_context * lctx = llama_new_context_with_model(model, lparams);

if (lctx == NULL) {

fprintf(stderr, "%s: error: failed to create context with model '%s'\n", __func__, params.model.c_str());

llama_free_model(model);

return std::make_tuple(nullptr, nullptr);

}

if (!params.lora_adapter.empty()) {

int err = llama_model_apply_lora_from_file(model,

params.lora_adapter.c_str(),

params.lora_base.empty() ? NULL : params.lora_base.c_str(),

params.n_threads);

if (err != 0) {

fprintf(stderr, "%s: error: failed to apply lora adapter\n", __func__);

llama_free(lctx);

llama_free_model(model);

return std::make_tuple(nullptr, nullptr);

}

}

return std::make_tuple(model, lctx);

#if defined(_WIN32)

// Windows-specific console initialization

DWORD dwMode = 0;

con_st.hConsole = GetStdHandle(STD_OUTPUT_HANDLE);

if (con_st.hConsole == INVALID_HANDLE_VALUE || !GetConsoleMode(con_st.hConsole, &dwMode)) {

con_st.hConsole = GetStdHandle(STD_ERROR_HANDLE);

if (con_st.hConsole != INVALID_HANDLE_VALUE && (!GetConsoleMode(con_st.hConsole, &dwMode))) {

con_st.hConsole = NULL;

}

}

if (con_st.hConsole) {

// Enable ANSI colors on Windows 10+

if (con_st.use_color && !(dwMode & ENABLE_VIRTUAL_TERMINAL_PROCESSING)) {

SetConsoleMode(con_st.hConsole, dwMode | ENABLE_VIRTUAL_TERMINAL_PROCESSING);

}

// Set console output codepage to UTF8

SetConsoleOutputCP(CP_UTF8);

}

HANDLE hConIn = GetStdHandle(STD_INPUT_HANDLE);

if (hConIn != INVALID_HANDLE_VALUE && GetConsoleMode(hConIn, &dwMode)) {

// Set console input codepage to UTF16

_setmode(_fileno(stdin), _O_WTEXT);

// Turn off ICANON (ENABLE_LINE_INPUT) and ECHO (ENABLE_ECHO_INPUT)

dwMode &= ~(ENABLE_LINE_INPUT | ENABLE_ECHO_INPUT);

SetConsoleMode(hConIn, dwMode);

}

#else

// POSIX-specific console initialization

struct termios new_termios;

tcgetattr(STDIN_FILENO, &con_st.prev_state);

new_termios = con_st.prev_state;

new_termios.c_lflag &= ~(ICANON | ECHO);

new_termios.c_cc[VMIN] = 1;

new_termios.c_cc[VTIME] = 0;

tcsetattr(STDIN_FILENO, TCSANOW, &new_termios);

con_st.tty = fopen("/dev/tty", "w+");

if (con_st.tty != nullptr) {

con_st.out = con_st.tty;

}

setlocale(LC_ALL, "");

#endif

// Reset console color

console_set_color(con_st, CONSOLE_COLOR_DEFAULT);

#if !defined(_WIN32)

if (con_st.tty != nullptr) {

con_st.out = stdout;

fclose(con_st.tty);

con_st.tty = nullptr;

}

// Restore the terminal settings on POSIX systems

tcsetattr(STDIN_FILENO, TCSANOW, &con_st.prev_state);

#endif

if (con_st.use_color && con_st.color != color) {

fflush(stdout);

switch(color) {

case CONSOLE_COLOR_DEFAULT:

fprintf(con_st.out, ANSI_COLOR_RESET);

break;

case CONSOLE_COLOR_PROMPT:

fprintf(con_st.out, ANSI_COLOR_YELLOW);

break;

case CONSOLE_COLOR_USER_INPUT:

fprintf(con_st.out, ANSI_BOLD ANSI_COLOR_GREEN);

break;

case CONSOLE_COLOR_ERROR:

fprintf(con_st.out, ANSI_BOLD ANSI_COLOR_RED);

break;

}

con_st.color = color;

fflush(con_st.out);

}

#if defined(_WIN32)

HANDLE hConsole = GetStdHandle(STD_INPUT_HANDLE);

wchar_t high_surrogate = 0;

while (true) {

INPUT_RECORD record;

DWORD count;

if (!ReadConsoleInputW(hConsole, &record, 1, &count) || count == 0) {

return WEOF;

}

if (record.EventType == KEY_EVENT && record.Event.KeyEvent.bKeyDown) {

wchar_t wc = record.Event.KeyEvent.uChar.UnicodeChar;

if (wc == 0) {

continue;

}

if ((wc >= 0xD800) && (wc <= 0xDBFF)) { // Check if wc is a high surrogate

high_surrogate = wc;

continue;

} else if ((wc >= 0xDC00) && (wc <= 0xDFFF)) { // Check if wc is a low surrogate

if (high_surrogate != 0) { // Check if we have a high surrogate

return ((high_surrogate - 0xD800) << 10) + (wc - 0xDC00) + 0x10000;

}

}

high_surrogate = 0; // Reset the high surrogate

return static_cast<char32_t>(wc);

}

}

#else

wchar_t wc = getwchar();

if (static_cast<wint_t>(wc) == WEOF) {

return WEOF;

}

#if WCHAR_MAX == 0xFFFF

if ((wc >= 0xD800) && (wc <= 0xDBFF)) { // Check if wc is a high surrogate

wchar_t low_surrogate = getwchar();

if ((low_surrogate >= 0xDC00) && (low_surrogate <= 0xDFFF)) { // Check if the next wchar is a low surrogate

return (static_cast<char32_t>(wc & 0x03FF) << 10) + (low_surrogate & 0x03FF) + 0x10000;

}

}

if ((wc >= 0xD800) && (wc <= 0xDFFF)) { // Invalid surrogate pair

return 0xFFFD; // Return the replacement character U+FFFD

}

#endif

return static_cast<char32_t>(wc);

#endif

#if defined(_WIN32)

if (con_st.hConsole != NULL) {

CONSOLE_SCREEN_BUFFER_INFO bufferInfo;

GetConsoleScreenBufferInfo(con_st.hConsole, &bufferInfo);

COORD newCursorPosition = bufferInfo.dwCursorPosition;

if (newCursorPosition.X == 0) {

newCursorPosition.X = bufferInfo.dwSize.X - 1;

newCursorPosition.Y -= 1;

} else {

newCursorPosition.X -= 1;

}

SetConsoleCursorPosition(con_st.hConsole, newCursorPosition);

return;

}

#endif

putc('\b', con_st.out);

#if defined(_WIN32)

return 1;

#else

return wcwidth(codepoint);

#endif

#if defined(_WIN32)

CONSOLE_SCREEN_BUFFER_INFO bufferInfo;

if (!GetConsoleScreenBufferInfo(con_st.hConsole, &bufferInfo)) {

// go with the default

return expectedWidth;

}

COORD initialPosition = bufferInfo.dwCursorPosition;

DWORD nNumberOfChars = length;

WriteConsole(con_st.hConsole, utf8_codepoint, nNumberOfChars, &nNumberOfChars, NULL);

CONSOLE_SCREEN_BUFFER_INFO newBufferInfo;

GetConsoleScreenBufferInfo(con_st.hConsole, &newBufferInfo);

// Figure out our real position if we're in the last column

if (utf8_codepoint[0] != 0x09 && initialPosition.X == newBufferInfo.dwSize.X - 1) {

DWORD nNumberOfChars;

WriteConsole(con_st.hConsole, &" \b", 2, &nNumberOfChars, NULL);

GetConsoleScreenBufferInfo(con_st.hConsole, &newBufferInfo);

}

int width = newBufferInfo.dwCursorPosition.X - initialPosition.X;

if (width < 0) {

width += newBufferInfo.dwSize.X;

}

return width;

#else

// we can trust expectedWidth if we've got one

if (expectedWidth >= 0 || con_st.tty == nullptr) {

fwrite(utf8_codepoint, length, 1, con_st.out);

return expectedWidth;

}

fputs("\033[6n", con_st.tty); // Query cursor position

int x1, x2, y1, y2;

int results = 0;

results = fscanf(con_st.tty, "\033[%d;%dR", &y1, &x1);

fwrite(utf8_codepoint, length, 1, con_st.tty);

fputs("\033[6n", con_st.tty); // Query cursor position

results += fscanf(con_st.tty, "\033[%d;%dR", &y2, &x2);

if (results != 4) {

return expectedWidth;

}

int width = x2 - x1;

if (width < 0) {

// Calculate the width considering text wrapping

struct winsize w;

ioctl(STDOUT_FILENO, TIOCGWINSZ, &w);

width += w.ws_col;

}

return width;

#endif

#if defined(_WIN32)

pop_cursor(con_st);

put_codepoint(con_st, &ch, 1, 1);

#else

fprintf(con_st.out, "\b%c", ch);

#endif

if (ch <= 0x7F) {

out.push_back(static_cast<unsigned char>(ch));

} else if (ch <= 0x7FF) {

out.push_back(static_cast<unsigned char>(0xC0 | ((ch >> 6) & 0x1F)));

out.push_back(static_cast<unsigned char>(0x80 | (ch & 0x3F)));

} else if (ch <= 0xFFFF) {

out.push_back(static_cast<unsigned char>(0xE0 | ((ch >> 12) & 0x0F)));

out.push_back(static_cast<unsigned char>(0x80 | ((ch >> 6) & 0x3F)));

out.push_back(static_cast<unsigned char>(0x80 | (ch & 0x3F)));

} else if (ch <= 0x10FFFF) {

out.push_back(static_cast<unsigned char>(0xF0 | ((ch >> 18) & 0x07)));

out.push_back(static_cast<unsigned char>(0x80 | ((ch >> 12) & 0x3F)));

out.push_back(static_cast<unsigned char>(0x80 | ((ch >> 6) & 0x3F)));

out.push_back(static_cast<unsigned char>(0x80 | (ch & 0x3F)));

} else {

// Invalid Unicode code point

}

if (line.empty()) {

return;

}

size_t pos = line.length() - 1;

// Find the start of the last UTF-8 character (checking up to 4 bytes back)

for (size_t i = 0; i < 3 && pos > 0; ++i, --pos) {

if ((line[pos] & 0xC0) != 0x80) break; // Found the start of the character

}

line.erase(pos);

console_set_color(con_st, CONSOLE_COLOR_USER_INPUT);

if (con_st.out != stdout) {

fflush(stdout);

}

line.clear();

std::vector<int> widths;

bool is_special_char = false;

bool end_of_stream = false;

char32_t input_char;

while (true) {

fflush(con_st.out); // Ensure all output is displayed before waiting for input

input_char = getchar32();

if (input_char == '\r' || input_char == '\n') {

break;

}

if (input_char == (char32_t) WEOF || input_char == 0x04 /* Ctrl+D*/) {

end_of_stream = true;

break;

}

if (is_special_char) {

console_set_color(con_st, CONSOLE_COLOR_USER_INPUT);

replace_last(con_st, line.back());

is_special_char = false;

}

if (input_char == '\033') { // Escape sequence

char32_t code = getchar32();

if (code == '[' || code == 0x1B) {

// Discard the rest of the escape sequence

while ((code = getchar32()) != (char32_t) WEOF) {

if ((code >= 'A' && code <= 'Z') || (code >= 'a' && code <= 'z') || code == '~') {

break;

}

}

}

} else if (input_char == 0x08 || input_char == 0x7F) { // Backspace

if (!widths.empty()) {

int count;

do {

count = widths.back();

widths.pop_back();

// Move cursor back, print space, and move cursor back again

for (int i = 0; i < count; i++) {

replace_last(con_st, ' ');

pop_cursor(con_st);

}

pop_back_utf8_char(line);

} while (count == 0 && !widths.empty());

}

} else {

int offset = line.length();

append_utf8(input_char, line);