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// Built-in functions
#include <errno.h>
#include <execinfo.h>
#include <fcntl.h>
#include <gc.h>
#include <locale.h>
#include <signal.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdlib.h>
#include <sys/param.h>
#include <time.h>
#include "../config.h"
#include "files.h"
#include "metamethods.h"
#include "optionals.h"
#include "print.h"
#include "siphash.h"
#include "stacktrace.h"
#include "stdlib.h"
#include "text.h"
#include "util.h"
#if defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__) || defined(__APPLE__)
static ssize_t getrandom(void *buf, size_t buflen, unsigned int flags) {
(void)flags;
arc4random_buf(buf, buflen);
return buflen;
}
#elif defined(__linux__)
// Use getrandom()
#include <sys/random.h>
#else
#error "Unsupported platform for secure random number generation"
#endif
public
bool USE_COLOR;
public
Text_t TOMO_VERSION_TEXT = Text(TOMO_VERSION);
public
const char *TOMO_PATH = TOMO_INSTALL;
static _Noreturn void signal_handler(int sig, siginfo_t *info, void *userdata) {
(void)info, (void)userdata;
assert(sig == SIGILL);
fflush(stdout);
if (USE_COLOR) fputs("\x1b[31;7m ===== ILLEGAL INSTRUCTION ===== \n\n\x1b[m", stderr);
else fputs("===== ILLEGAL INSTRUCTION =====\n\n", stderr);
print_stacktrace(stderr, 3);
fflush(stderr);
raise(SIGABRT);
_exit(1);
}
public
void tomo_init(void) {
GC_INIT();
const char *color_env = getenv("COLOR");
USE_COLOR = color_env ? strcmp(color_env, "1") == 0 : isatty(STDOUT_FILENO);
if (getenv("NO_COLOR") && getenv("NO_COLOR")[0] != '\0') USE_COLOR = false;
setlocale(LC_ALL, "");
assert(getrandom(TOMO_HASH_KEY, sizeof(TOMO_HASH_KEY), 0) == sizeof(TOMO_HASH_KEY));
struct sigaction sigact;
sigact.sa_sigaction = signal_handler;
sigemptyset(&sigact.sa_mask);
sigact.sa_flags = 0;
sigaction(SIGILL, &sigact, (struct sigaction *)NULL);
}
public
_Noreturn void fail_text(Text_t message) { fail(message); }
public
Text_t builtin_last_err() { return Text$from_str(strerror(errno)); }
static int _inspect_depth = 0;
static file_t *file = NULL;
__attribute__((nonnull)) public
void start_inspect(const char *filename, int64_t start, int64_t end) {
if (file == NULL || strcmp(file->filename, filename) != 0) file = load_file(filename);
if (file) {
size_t first_line_len = strcspn(file->text + start, "\r\n");
if (first_line_len > (size_t)(end - start)) first_line_len = (size_t)(end - start);
const char *slash = strrchr(filename, '/');
const char *file_base = slash ? slash + 1 : filename;
int64_t line_num = get_line_number(file, file->text + start);
if (USE_COLOR) {
print(repeated_char(' ', 3 * _inspect_depth), "\x1b[33;1m>> \x1b[m",
string_slice(file->text + start, first_line_len), " ",
repeated_char(' ', MAX(0, 35 - (int64_t)first_line_len - 3 * _inspect_depth)), "\x1b[32;2m[",
file_base, ":", line_num, "]\x1b[m");
} else {
print(repeated_char(' ', 3 * _inspect_depth), ">> ", string_slice(file->text + start, first_line_len),
" ", repeated_char(' ', MAX(0, 35 - (int64_t)first_line_len - 3 * _inspect_depth)), "[", file_base,
":", line_num, "]");
}
// For multi-line expressions, dedent each and print it on a new line with ".. " in front:
if (end > start + (int64_t)first_line_len) {
const char *line_start = get_line(file, line_num);
int64_t indent_len = (int64_t)strspn(line_start, " \t");
for (const char *line = file->text + start + first_line_len; line < file->text + end;
line += strcspn(line, "\r\n")) {
line += strspn(line, "\r\n");
if ((int64_t)strspn(line, " \t") >= indent_len) line += indent_len;
print(repeated_char(' ', 3 * _inspect_depth), USE_COLOR ? "\x1b[33m..\033[m " : ".. ",
string_slice(line, strcspn(line, "\r\n")));
}
}
}
_inspect_depth += 1;
}
public
void end_inspect(const void *expr, const TypeInfo_t *type) {
_inspect_depth -= 1;
if (type && type->metamethods.as_text) {
Text_t expr_text = generic_as_text(expr, USE_COLOR, type);
Text_t type_name = generic_as_text(NULL, false, type);
for (int i = 0; i < 3 * _inspect_depth; i++)
fputc(' ', stdout);
fprint(stdout, USE_COLOR ? "\x1b[33;1m=\x1b[0m " : "= ", expr_text, USE_COLOR ? " \x1b[2m: \x1b[36m" : " : ",
type_name, USE_COLOR ? "\033[m" : "");
}
}
public
void say(Text_t text, bool newline) {
Text$print(stdout, text);
if (newline) fputc('\n', stdout);
fflush(stdout);
}
public
_Noreturn void tomo_exit(Text_t text, int32_t status) {
if (text.length > 0) print(text);
_exit(status);
}
public
OptionalText_t ask(Text_t prompt, bool bold, bool force_tty) {
OptionalText_t ret = NONE_TEXT;
FILE *out = stdout;
FILE *in = stdin;
char *line = NULL;
size_t bufsize = 0;
ssize_t length = 0;
char *gc_input = NULL;
if (force_tty && !isatty(STDOUT_FILENO)) {
out = fopen("/dev/tty", "w");
if (!out) goto cleanup;
}
if (bold) fputs("\x1b[1m", out);
Text$print(out, prompt);
if (bold) fputs("\x1b[m", out);
fflush(out);
if (force_tty && !isatty(STDIN_FILENO)) {
in = fopen("/dev/tty", "r");
if (!in) {
fputs("\n", out); // finish the line, since the user can't
goto cleanup;
}
}
length = getline(&line, &bufsize, in);
if (length == -1) {
fputs("\n", out); // finish the line, since we didn't get any input
goto cleanup;
}
if (length > 0 && line[length - 1] == '\n') {
line[length - 1] = '\0';
--length;
}
gc_input = GC_MALLOC_ATOMIC((size_t)(length + 1));
memcpy(gc_input, line, (size_t)(length + 1));
ret = Text$from_strn(gc_input, (size_t)(length));
cleanup:
if (out && out != stdout) fclose(out);
if (in && in != stdin) fclose(in);
if (line != NULL) free(line);
return ret;
}
public
void sleep_num(double seconds) {
struct timespec ts;
ts.tv_sec = (time_t)seconds;
ts.tv_nsec = (long)((seconds - (double)ts.tv_sec) * 1e9);
nanosleep(&ts, NULL);
}
public
OptionalText_t getenv_text(Text_t name) {
const char *val = getenv(Text$as_c_string(name));
return val ? Text$from_str(val) : NONE_TEXT;
}
public
void setenv_text(Text_t name, Text_t value) { setenv(Text$as_c_string(name), Text$as_c_string(value), 1); }
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