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llama.cpp/examples/tokenize/tokenize.cpp
Daniel Bevenius 6f63d646c1
tokenize : add --show-count (token) option (#8299) 
This commit adds a new option to the tokenize example, --show-count.
When this is set the total number of tokens are printed to stdout.

This was added as an option as I was concerned that there might be
scripts that use the output from this program and it might be better to
not print this information by default.

The motivation for this is that can be useful to find out how many
tokens a file contains, for example when trying to determine prompt
input file sizes for testing.

Signed-off-by: Daniel Bevenius <daniel.bevenius@gmail.com>
2024-07-04 19:38:58 +03:00

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#include "common.h"
#include "llama.h"
#include <cmath>
#include <cstdio>
#include <fstream>
#include <string>
#include <vector>
#if defined(_WIN32)
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <shellapi.h> // For CommandLineToArgvW
#endif
static void print_usage_information(const char * argv0, FILE * stream) {
fprintf(stream, "usage: %s [options]\n\n", argv0);
fprintf(stream, "The tokenize program tokenizes a prompt using a given model,\n");
fprintf(stream, "and prints the resulting tokens to standard output.\n\n");
fprintf(stream, "It needs a model file, a prompt, and optionally other flags\n");
fprintf(stream, "to control the behavior of the tokenizer.\n\n");
fprintf(stream, " The possible options are:\n");
fprintf(stream, "\n");
fprintf(stream, " -h, --help print this help and exit\n");
fprintf(stream, " -m MODEL_PATH, --model MODEL_PATH path to model.\n");
fprintf(stream, " --ids if given, only print numerical token IDs, and not token strings.\n");
fprintf(stream, " The output format looks like [1, 2, 3], i.e. parseable by Python.\n");
fprintf(stream, " -f PROMPT_FNAME, --file PROMPT_FNAME read prompt from a file.\n");
fprintf(stream, " -p PROMPT, --prompt PROMPT read prompt from the argument.\n");
fprintf(stream, " --stdin read prompt from standard input.\n");
fprintf(stream, " --no-bos do not ever add a BOS token to the prompt, even if normally the model uses a BOS token.\n");
fprintf(stream, " --log-disable disable logs. Makes stderr quiet when loading the model.\n");
fprintf(stream, " --show-count print the total number of tokens.\n");
}
static void llama_log_callback_null(ggml_log_level level, const char * text, void * user_data) {
(void) level;
(void) text;
(void) user_data;
}
static std::string read_prompt_from_file(const char * filepath, bool & success) {
success = false;
std::ifstream in(filepath, std::ios::binary);
if (!in) {
fprintf(stderr, "%s: could not open file '%s' for reading: %s\n", __func__, filepath, strerror(errno));
return std::string();
}
// do not assume the file is seekable (e.g. /dev/stdin)
std::stringstream buffer;
buffer << in.rdbuf();
if (in.fail()) {
fprintf(stderr, "%s: could not read the entire file '%s': %s\n", __func__, filepath, strerror(errno));
return std::string();
}
success = true;
return buffer.str();
}
//
// Function: ingest_args(...) -> vector<string>
//
// Takes argc and argv arguments, and converts them to a vector of UTF-8 encoded
// strings, as an STL vector<string>.
//
// In particular, it handles character encoding shenanigans on Windows.
//
// Note: raw_argc and raw_argv are not actually read at all on Windows.
// On Windows we call GetCommandLineW to get the arguments in wchar_t
// format, ignoring the regular argc/argv arguments to main().
//
// TODO: potential opportunity to roll common stuff into common/console.cpp
// in relation to Windows wchar_t shenanigans.
static std::vector<std::string> ingest_args(int raw_argc, char ** raw_argv) {
std::vector<std::string> argv;
// Handle Windows, if given non-ASCII arguments.
// We convert wchar_t arguments into UTF-8 char* on this platform.
// Lets you invoke 'tokenize' on Windows cmd.exe with non-ASCII characters
// without throwing tantrums.
#if defined(_WIN32)
int argc;
const LPWSTR cmdline_wargv = GetCommandLineW();
LPWSTR * wargv = CommandLineToArgvW(cmdline_wargv, &argc);
// silence unused arg warnings
(void) raw_argc;
(void) raw_argv;
for (int i = 0; i < argc; ++i) {
int length_needed = WideCharToMultiByte(CP_UTF8, 0, wargv[i], wcslen(wargv[i]), 0, 0, NULL, NULL);
char * output_buf = (char *) calloc(length_needed+1, sizeof(char));
GGML_ASSERT(output_buf);
WideCharToMultiByte(CP_UTF8, 0, wargv[i], wcslen(wargv[i]), output_buf, length_needed, NULL, NULL);
output_buf[length_needed] = '\0';
argv.push_back(output_buf);
free(output_buf);
}
LocalFree((HLOCAL) wargv);
#else
int argc = raw_argc;
for (int i = 0; i < argc; ++i) {
argv.push_back(raw_argv[i]);
}
#endif
GGML_ASSERT((unsigned int) argc == argv.size());
return argv;
}
//
// Function: write_utf8_cstr_to_stdout(const char *) -> <writes to stdout>
//
// writes a string to standard output; taking into account that on Windows
// to display correctly you have to use special handling. Works even if the
// user has not set a unicode code page on a Windows cmd.exe.
//
// In case of invalid UTF-8, invalid_utf8 is set to true on Windows, and something
// a human-readable is written instead.
//
// On non-Windows systems, simply printfs() the string.
static void write_utf8_cstr_to_stdout(const char * str, bool & invalid_utf8) {
invalid_utf8 = false;
#if defined(_WIN32)
// Are we in a console?
HANDLE hConsole = GetStdHandle(STD_OUTPUT_HANDLE);
DWORD dwMode = 0;
// According to Microsoft docs:
// "WriteConsole fails if it is used with a standard handle that is redirected to a file."
// Also according to the docs, you can use GetConsoleMode to check for that.
if (hConsole == INVALID_HANDLE_VALUE || !GetConsoleMode(hConsole, &dwMode)) {
printf("%s", str);
return;
}
// MultiByteToWideChar reports an error if str is empty, don't report
// them as invalid_utf8.
if (*str == 0) {
return;
}
int length_needed = MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS, str, strlen(str), NULL, 0);
if (length_needed == 0) {
DWORD err = GetLastError();
if (err == ERROR_NO_UNICODE_TRANSLATION) {
invalid_utf8 = true;
int len = strlen(str);
printf("<");
for (int i = 0; i < len; ++i) {
if (i > 0) {
printf(" ");
}
printf("%02x", (uint8_t) str[i]);
}
printf(">");
return;
}
GGML_ASSERT(false && "MultiByteToWideChar() failed in an unexpected way.");
}
LPWSTR wstr = (LPWSTR) calloc(length_needed+1, sizeof(*wstr));
GGML_ASSERT(wstr);
MultiByteToWideChar(CP_UTF8, 0, str, strlen(str), wstr, length_needed);
WriteConsoleW(hConsole, wstr, length_needed, NULL, NULL);
free(wstr);
#else
// TODO: reporting invalid_utf8 would be useful on non-Windows too.
// printf will silently just write bad unicode.
printf("%s", str);
#endif
}
int main(int raw_argc, char ** raw_argv) {
const std::vector<std::string> argv = ingest_args(raw_argc, raw_argv);
const int argc = argv.size();
if (argc <= 1) {
print_usage_information(argv[0].c_str(), stderr);
return 1;
}
//////
// Read out all the command line arguments.
//////
// variables where to put any arguments we see.
bool printing_ids = false;
bool no_bos = false;
bool disable_logging = false;
bool show_token_count = false;
const char * model_path = NULL;
const char * prompt_path = NULL;
const char * prompt_arg = NULL;
// track which arguments were explicitly given
// used for sanity checking down the line
bool model_path_set = false;
bool prompt_path_set = false;
bool prompt_set = false;
bool stdin_set = false;
int iarg = 1;
for (; iarg < argc; ++iarg) {
std::string arg{argv[iarg]};
if (arg == "-h" || arg == "--help") {
print_usage_information(argv[0].c_str(), stdout);
return 0;
}
else if (arg == "--ids") {
printing_ids = true;
}
else if (arg == "-m" || arg == "--model") {
if (model_path_set) {
fprintf(stderr, "Error: -m or --model specified multiple times.\n");
return 1;
}
model_path = argv[++iarg].c_str();
model_path_set = true;
}
else if (arg == "--no-bos") {
no_bos = true;
}
else if (arg == "-p" || arg == "--prompt") {
if (prompt_set) {
fprintf(stderr, "Error: -p or --prompt specified multiple times.\n");
return 1;
}
prompt_arg = argv[++iarg].c_str();
prompt_set = true;
}
else if (arg == "-f" || arg == "--file") {
if (prompt_path_set) {
fprintf(stderr, "Error: -f or --file specified multiple times.\n");
return 1;
}
prompt_path = argv[++iarg].c_str();
prompt_path_set = true;
}
else if (arg == "--stdin") {
stdin_set = true;
}
else if (arg == "--log-disable") {
disable_logging = true;
}
else if (arg == "--show-count") {
show_token_count = true;
}
else {
fprintf(stderr, "Error: unknown option '%s'\n", argv[iarg].c_str());
return 1;
}
}
//////
// Sanity check the command line arguments.
//////
// Check that we have the required stuff set.
if (model_path_set && model_path == NULL) {
fprintf(stderr, "Error: --model requires an argument.\n");
return 1;
}
if (!model_path_set) {
fprintf(stderr, "Error: must specify --model.\n");
return 1;
}
if (prompt_path_set && prompt_path == NULL) {
fprintf(stderr, "Error: --file requires an argument.\n");
return 1;
}
if (prompt_set && prompt_arg == NULL) {
fprintf(stderr, "Error: --prompt requires an argument.\n");
return 1;
}
const int prompts_set = !!(prompt_path_set) + !!(prompt_set) + !!(stdin_set);
if (prompts_set > 1) {
fprintf(stderr, "Error: --stdin, --file and --prompt are mutually exclusive.\n");
return 1;
}
// Must have some prompt.
if (prompts_set == 0) {
fprintf(stderr, "Error: must specify one of: --stdin, --file or --prompt.\n");
return 1;
}
GGML_ASSERT(model_path);
GGML_ASSERT(prompt_path || prompt_arg || stdin_set);
//////
// Figure out where will the prompt come from.
//////
std::string prompt;
if (prompt_path_set) {
bool success = false;
prompt = read_prompt_from_file(prompt_path, success);
if (!success) {
return 1;
}
} else if (prompt_set) {
prompt = prompt_arg;
} else {
GGML_ASSERT(stdin_set);
// we read stdin *after* loading model (early exit if model cannot
// be loaded, which can be a nicer user experience)
}
//////
// Start actually doing the tokenizing stuff.
//////
#ifdef LOG_DISABLE_LOGS
disable_logging = true;
#endif
if (disable_logging) {
llama_log_set(llama_log_callback_null, NULL);
}
llama_backend_init();
llama_model_params model_params = llama_model_default_params();
model_params.vocab_only = true;
llama_model * model = llama_load_model_from_file(model_path, model_params);
if (!model) {
fprintf(stderr, "Error: could not load model from file '%s'.\n", model_path);
return 1;
}
llama_context_params ctx_params = llama_context_default_params();
llama_context * ctx = llama_new_context_with_model(model, ctx_params);
if (!ctx) {
fprintf(stderr, "Error: could not create context.\n");
return 1;
}
// read entire prompt from stdin?
if (stdin_set) {
GGML_ASSERT(!prompt_path_set && !prompt_set);
std::stringstream stdin_buffer;
stdin_buffer << std::cin.rdbuf();
if (std::cin.fail()) {
fprintf(stderr, "Error: could not read the entire standard input.\n");
return 1;
}
prompt = stdin_buffer.str();
}
const bool model_wants_add_bos = llama_should_add_bos_token(model);
const bool add_bos = model_wants_add_bos && !no_bos;
std::vector<llama_token> tokens;
tokens = ::llama_tokenize(model, prompt, add_bos, true);
if (printing_ids) {
printf("[");
}
for (int i = 0; i < (int) tokens.size(); i++) {
if (printing_ids) {
if (i > 0) {
printf(", ");
}
printf("%d", tokens[i]);
} else {
bool invalid_utf8 = false;
printf("%6d -> '", tokens[i]);
write_utf8_cstr_to_stdout(llama_token_to_piece(ctx, tokens[i]).c_str(), invalid_utf8);
if (invalid_utf8) {
printf("' (utf-8 decode failure)\n");
} else {
printf("'\n");
}
}
}
if (printing_ids) {
printf("]\n");
}
if (show_token_count) {
printf("Total number of tokens: %ld\n", tokens.size());
}
// silence valgrind
llama_free(ctx);
llama_free_model(model);
return 0;
}
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