common.h

#pragma once

#include <common/macro.h>
#include <unistd.h>
#include <stdint.h>

#define not_implemented() __not_implemented(__func__,__FILE__,__LINE__)
extern void __not_implemented(const char *func, char *file, int line);

#define UNUSED(...) __unused((void *) __VA_ARGS__)
void __unused(void *, ...);

long get_mtime(const char *path);

void *safe_malloc(size_t size);

int is_utf8(const char *string);

/* Read `bytes` as the big endian representation of a 32-bit unsigned integer.
   `n` is the number of bytes in `bytes`
   Returns 0 if n is 0.
   Restriction: n <= 4 */
uint32_t be_uint32_t(const uint8_t bytes[], size_t n);

/* Same as `be_uint32_t` but for 64-bit unsigned integers.
   Restriction: n <= 8 */
uint64_t be_uint64_t(const uint8_t bytes[], size_t n);

/* Trim the string `str` of the char `c` from the right and the left.
   The string may not be null terminated.
   Returns a pointer to the the trimmed string
   Restrictions: the len of the string must be `len`. */
char *trim(char *str, size_t len, char c);

/* Get a line from stdin safely. */
int get_stdin_line(const char *prompt, char *buf, size_t len);

int read_self_exe(char *path, size_t len);

int safe_snprintf(char *dest, const size_t max_len, const char *format, ...);