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cosmopolitan/third_party/ggml/common.cc
Justine Tunney daf4454a06
Validate privileged code relationships 
- Work towards improving non-optimized build support
- Introduce MODE=zero which is -O0 without ASAN/UBSAN
- Use system GCC when ~/.cosmo.mk has USE_SYSTEM_TOOLCHAIN=1
- Have package.com check .privileged code doesn't call non-privileged
2023-06-08 04:38:06 -07:00

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/*-*-mode:c++;indent-tabs-mode:nil;c-basic-offset:4;tab-width:8;coding:utf-8-*-│
│vi: set net ft=c++ ts=4 sts=4 sw=4 fenc=utf-8 :vi│
╚──────────────────────────────────────────────────────────────────────────────╝
│ │
│ llama.com │
│ Copyright (c) 2023 Justine Alexandra Roberts Tunney │
│ Copyright (c) 2023 Georgi Gerganov │
│ │
│ Permission is hereby granted, free of charge, to any person obtaining │
│ a copy of this software and associated documentation files (the │
│ "Software"), to deal in the Software without restriction, including │
│ without limitation the rights to use, copy, modify, merge, publish, │
│ distribute, sublicense, and/or sell copies of the Software, and to │
│ permit persons to whom the Software is furnished to do so, subject to │
│ the following conditions: │
│ │
│ The above copyright notice and this permission notice shall be │
│ included in all copies or substantial portions of the Software. │
│ │
│ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, │
│ EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF │
│ MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. │
│ IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY │
│ CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, │
│ TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE │
│ SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. │
│ │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "third_party/ggml/common.h"
#include "libc/calls/calls.h"
#include "libc/calls/struct/termios.h"
#include "libc/calls/termios.h"
#include "libc/runtime/runtime.h"
#include "libc/stdio/stdio.h"
#include "libc/str/str.h"
#include "libc/sysv/consts/fileno.h"
#include "libc/sysv/consts/termios.h"
#include "third_party/ggml/llama.h"
#include "third_party/ggml/llama_util.h"
#include "third_party/libcxx/algorithm"
#include "third_party/libcxx/cassert"
#include "third_party/libcxx/cstring"
#include "third_party/libcxx/fstream"
#include "third_party/libcxx/iterator"
#include "third_party/libcxx/sstream"
#include "third_party/libcxx/string"
STATIC_YOINK("zipos");
asm(".ident\t\"\\n\\n\
llama.cpp (MIT License)\\n\
Copyright (c) 2023 Georgi Gerganov\"");
asm(".include \"libc/disclaimer.inc\"");
// clang-format off
static std::string replace_all(std::string const& original,
std::string const& before,
std::string const& after) {
// https://stackoverflow.com/a/7724536/1653720
std::string retval;
std::string::const_iterator end = original.end();
std::string::const_iterator current = original.begin();
std::string::const_iterator next =
std::search(current, end, before.begin(), before.end());
while (next != end) {
retval.append(current, next);
retval.append(after);
current = next + before.size();
next = std::search(current, end, before.begin(), before.end());
}
retval.append(current, next);
return retval;
}
static bool append_file_to_prompt(const char *path, gpt_params & params) {
std::ifstream file(path);
if (!file) {
fprintf(stderr, "error: failed to open file '%s'\n", path);
return false;
}
std::copy(std::istreambuf_iterator<char>(file),
std::istreambuf_iterator<char>(),
back_inserter(params.prompt));
if (params.prompt.back() == '\n') {
params.prompt.pop_back();
}
return true;
}
bool gpt_params_parse(int argc, char ** argv, gpt_params & params) {
params.n_threads = std::min(20, std::max(1, _getcpucount() >> 1));
bool invalid_param = false;
std::string arg;
gpt_params default_params;
for (int i = 1; i < argc; i++) {
arg = argv[i];
if (arg == "-s" || arg == "--seed") {
if (++i >= argc) {
invalid_param = true;
break;
}
params.seed = std::stoi(argv[i]);
} else if (arg == "-v" || arg == "--verbose") {
++params.verbose;
} else if (arg == "-q" || arg == "--quiet") {
--params.verbose;
} else if (arg == "-t" || arg == "--threads") {
if (++i >= argc) {
invalid_param = true;
break;
}
params.n_threads = std::stoi(argv[i]);
} else if (arg == "-p" || arg == "--prompt") {
if (++i >= argc) {
invalid_param = true;
break;
}
params.prompt = argv[i];
} else if (arg == "-C" || arg == "--prompt_cache") {
if (++i >= argc) {
invalid_param = true;
break;
}
params.prompt_path = argv[i];
} else if (arg == "-f" || arg == "--file") {
if (++i >= argc) {
invalid_param = true;
break;
}
if (!append_file_to_prompt(argv[i], params)) {
invalid_param = true;
break;
}
} 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 == "--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 == "--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 == "-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_str = argv[i];
if (is_integer_str(argv[i])) {
params.n_keep = std::stoi(params.n_keep_str);
if (!params.n_keep) {
params.n_keep_str = "";
}
}
} else if (arg == "-m" || arg == "--model") {
if (++i >= argc) {
invalid_param = true;
break;
}
params.model = 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 == "--no-mmap") {
params.use_mmap = false;
} else if (arg == "--mtest") {
params.mem_test = true;
} else if (arg == "--verbose-prompt") {
params.verbose_prompt = true;
} else if (arg == "-r" || arg == "--stop" || 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 == "--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 = 0;
char sign = 0;
std::string value_str;
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 {
invalid_param = true;
break;
}
} else if (arg == "--n_parts") {
if (++i >= argc) {
invalid_param = true;
break;
}
params.n_parts = std::stoi(argv[i]);
} else if (arg == "-h" || arg == "--help") {
gpt_print_usage(stdout, 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 {
fprintf(stderr, "error: unknown argument: %s\n", arg.c_str());
gpt_print_usage(stderr, argc, argv, default_params);
exit(1);
}
}
if (invalid_param) {
fprintf(stderr, "error: invalid parameter for argument: %s\n", arg.c_str());
gpt_print_usage(stderr, argc, argv, default_params);
exit(1);
}
// if no prompt is specified, then use companion ai
if (params.prompt.empty()) {
if (params.verbose > 0) {
fprintf(stderr, "%s: No prompt specified\n", __func__);
fprintf(stderr, "%s: Loading CompanionAI\n", __func__);
}
if (fileexists("third_party/ggml/companionai.txt")) {
append_file_to_prompt("third_party/ggml/companionai.txt", params);
} else {
append_file_to_prompt("/zip/companionai.txt", params);
}
const char *user;
user = getenv("USER");
if (!user || !*user) {
user = "Cosmo";
}
params.prompt = replace_all(params.prompt, "USER_NAME", user);
std::string user_prompt;
user_prompt.append(user);
user_prompt.append(":");
params.logit_bias[llama_token_eos()] = -INFINITY;
params.antiprompt.push_back(user_prompt);
params.repeat_penalty = 1.17647;
params.repeat_last_n = 256;
params.interactive = true;
params.n_predict = -1;
params.n_ctx = 2048;
params.n_keep = 0;
params.n_keep_str = "\n\n\n";
params.top_k = 40;
params.top_p = .5;
params.temp = 0.4;
}
return true;
}
void gpt_print_usage(FILE *f, int /*argc*/, char ** argv, const gpt_params & params) {
fprintf(f, "usage: %s [options]\n", argv[0]);
fprintf(f, "\n");
fprintf(f, "options:\n");
fprintf(f, " -h, --help show this help message and exit\n");
fprintf(f, " -v, --verbose print helpful information to stderr [repeatable]\n");
fprintf(f, " -s, --silent disables ephemeral progress indicators [repeatable]\n");
fprintf(f, " -i, --interactive run in interactive mode\n");
fprintf(f, " --interactive-first run in interactive mode and wait for input right away\n");
fprintf(f, " -ins, --instruct run in instruction mode (use with Alpaca models)\n");
fprintf(f, " --multiline-input allows you to write or paste multiple lines without ending each in '\\'\n");
fprintf(f, " -r PROMPT, --stop PROMPT, --reverse-prompt PROMPT\n");
fprintf(f, " stop generating text when the specified text is encountered.\n");
fprintf(f, " this option may be repeated.\n");
fprintf(f, " -s SEED, --seed SEED RNG seed (default: -1, use random seed for < 0)\n");
fprintf(f, " -t N, --threads N number of threads to use during computation (default: %d)\n", params.n_threads);
fprintf(f, " -p PROMPT, --prompt PROMPT\n");
fprintf(f, " prompt to start generation with (default: Companion AI)\n");
fprintf(f, " --random-prompt start with a randomized prompt.\n");
fprintf(f, " --in-prefix STRING string to prefix user inputs with (default: empty)\n");
fprintf(f, " --in-suffix STRING string to suffix after user inputs with (default: empty)\n");
fprintf(f, " -f FNAME, --file FNAME\n");
fprintf(f, " text file containing prompt (default: Companion AI)\n");
fprintf(f, " -C FNAME, --prompt_cache FNAME\n");
fprintf(f, " path of cache for fast prompt reload (default: .prompt.jtlp)\n");
fprintf(f, " -n N, --n_predict N number of tokens to predict (default: %d, -1 = infinity)\n", params.n_predict);
fprintf(f, " --top_k N top-k sampling (default: %d, 0 = disabled)\n", params.top_k);
fprintf(f, " --top_p N top-p sampling (default: %.1f, 1.0 = disabled)\n", (double)params.top_p);
fprintf(f, " --tfs N tail free sampling, parameter z (default: %.1f, 1.0 = disabled)\n", (double)params.tfs_z);
fprintf(f, " --typical N locally typical sampling, parameter p (default: %.1f, 1.0 = disabled)\n", (double)params.typical_p);
fprintf(f, " --repeat_last_n N last n tokens to consider for penalize (default: %d, 0 = disabled, -1 = ctx_size)\n", params.repeat_last_n);
fprintf(f, " --repeat_penalty N penalize repeat sequence of tokens (default: %.1f, 1.0 = disabled)\n", (double)params.repeat_penalty);
fprintf(f, " --presence_penalty N repeat alpha presence penalty (default: %.1f, 0.0 = disabled)\n", (double)params.presence_penalty);
fprintf(f, " --frequency_penalty N repeat alpha frequency penalty (default: %.1f, 0.0 = disabled)\n", (double)params.frequency_penalty);
fprintf(f, " --mirostat N use Mirostat sampling.\n");
fprintf(f, " Top K, Nucleus, Tail Free and Locally Typical samplers are ignored if used.\n");
fprintf(f, " (default: %d, 0 = disabled, 1 = Mirostat, 2 = Mirostat 2.0)\n", params.mirostat);
fprintf(f, " --mirostat_lr N Mirostat learning rate, parameter eta (default: %.1f)\n", (double)params.mirostat_eta);
fprintf(f, " --mirostat_ent N Mirostat target entropy, parameter tau (default: %.1f)\n", (double)params.mirostat_tau);
fprintf(f, " -l TOKEN_ID(+/-)BIAS, --logit-bias TOKEN_ID(+/-)BIAS\n");
fprintf(f, " modifies the likelihood of token appearing in the completion,\n");
fprintf(f, " i.e. `--logit-bias 15043+1` to increase likelihood of token ' Hello',\n");
fprintf(f, " or `--logit-bias 15043-1` to decrease likelihood of token ' Hello'\n");
fprintf(f, " --repeat_last_n N last n tokens to consider for penalize (default: %d)\n", params.repeat_last_n);
fprintf(f, " --repeat_penalty N penalize repeat sequence of tokens (default: %.1f)\n", (double)params.repeat_penalty);
fprintf(f, " -c N, --ctx_size N size of the prompt context (default: %d)\n", params.n_ctx);
fprintf(f, " --ignore-eos ignore end of stream token and continue generating (implies --logit-bias 2-inf)\n");
fprintf(f, " --no-penalize-nl do not penalize newline token\n");
fprintf(f, " --memory_f32 use f32 instead of f16 for memory key+value\n");
fprintf(f, " --temp N temperature (default: %.1f)\n", (double)params.temp);
fprintf(f, " --n_parts N number of model parts (default: -1 = determine from dimensions)\n");
fprintf(f, " -b N, --batch_size N batch size for prompt processing (default: %d)\n", params.n_batch);
fprintf(f, " --perplexity compute perplexity over the prompt\n");
fprintf(f, " --keep NUM|STR number of tokens to keep from the initial prompt, or substring\n");
fprintf(f, " to search for within prompt that divides the actual prompt from\n");
fprintf(f, " its initial example text (default: %d, -1 = all)\n", params.n_keep);
if (llama_mlock_supported()) {
fprintf(f, " --mlock force system to keep model in RAM rather than swapping or compressing\n");
}
if (llama_mmap_supported()) {
fprintf(f, " --no-mmap do not memory-map model (slower load but may reduce pageouts if not using mlock)\n");
}
#ifdef LLAMA_SUPPORTS_GPU_OFFLOAD
fprintf(stderr, " -ngl N, --n-gpu-layers N\n");
fprintf(stderr, " number of layers to store in VRAM\n");
#endif
fprintf(f, " --mtest compute maximum memory usage\n");
fprintf(f, " --verbose-prompt print prompt before generation\n");
fprintf(f, " --lora FNAME apply LoRA adapter (implies --no-mmap)\n");
fprintf(f, " --lora-base FNAME optional model to use as a base for the layers modified by the LoRA adapter\n");
fprintf(f, " -m FNAME, --model FNAME\n");
fprintf(f, " model path (default: %s)\n", params.model.c_str());
fprintf(f, "\n");
}
std::string gpt_random_prompt(std::mt19937 & rng) {
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";
}
// TODO: not great allocating this every time
std::vector<llama_token> llama_tokenize(struct llama_context * ctx, const std::string & text, bool add_bos) {
// 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;
}
struct llama_context * llama_init_from_gpt_params(const gpt_params & params) {
auto lparams = llama_context_default_params();
lparams.n_ctx = params.n_ctx;
lparams.n_parts = params.n_parts;
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;
llama_context * lctx = llama_init_from_file(params.model.c_str(), lparams, params.verbose);
if (lctx == NULL) {
fprintf(stderr, "%s: error: failed to load model '%s'\n", __func__, params.model.c_str());
return NULL;
}
if (!params.lora_adapter.empty()) {
int err = llama_apply_lora_from_file(lctx,
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__);
return NULL;
}
}
return lctx;
}
void console_init(console_state & con_st) {
#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) {
setvbuf(con_st.tty, NULL, _IONBF, 0);
con_st.out = con_st.tty;
}
setlocale(LC_ALL, "");
#endif
}
void console_cleanup(console_state & con_st) {
// 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
}
/* Keep track of current color of output, and emit ANSI code if it changes. */
void console_set_color(console_state & con_st, console_color_t color) {
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;
}
con_st.color = color;
fflush(con_st.out);
}
}
char32_t getchar32() {
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);
}
void pop_cursor(console_state & con_st) {
#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);
}
int estimateWidth(char32_t codepoint) {
#if defined(_WIN32)
return 1;
#else
return wcwidth(codepoint);
#endif
}
int put_codepoint(console_state & con_st, const char* utf8_codepoint, size_t length, int expectedWidth) {
#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;
tcgetwinsize(STDOUT_FILENO, &w);
width += w.ws_col;
}
return width;
#endif
}
void replace_last(console_state & con_st, char ch) {
#if defined(_WIN32)
pop_cursor(con_st);
put_codepoint(con_st, &ch, 1, 1);
#else
fprintf(con_st.out, "\b%c", ch);
#endif
}
void append_utf8(char32_t ch, std::string & out) {
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
}
}
// Helper function to remove the last UTF-8 character from a string
void pop_back_utf8_char(std::string & line) {
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);
}
bool console_readline(console_state & con_st, std::string & line) {
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 == 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()) != 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);
int width = put_codepoint(con_st, line.c_str() + offset, line.length() - offset, estimateWidth(input_char));
if (width < 0) {
width = 0;
}
widths.push_back(width);
}
if (!line.empty() && (line.back() == '\\' || line.back() == '/')) {
console_set_color(con_st, CONSOLE_COLOR_PROMPT);
replace_last(con_st, line.back());
is_special_char = true;
}
}
bool has_more = con_st.multiline_input;
if (is_special_char) {
replace_last(con_st, ' ');
pop_cursor(con_st);
char last = line.back();
line.pop_back();
if (last == '\\') {
line += '\n';
fputc('\n', con_st.out);
has_more = !has_more;
} else {
// llama will just eat the single space, it won't act as a space
if (line.length() == 1 && line.back() == ' ') {
line.clear();
pop_cursor(con_st);
}
has_more = false;
}
} else {
if (end_of_stream) {
has_more = false;
} else {
line += '\n';
fputc('\n', con_st.out);
}
}
fflush(con_st.out);
return has_more;
}
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