c unicode examples

file.c

#include <wchar.h>
#include <stdio.h>
#include <locale.h>
#include <stdlib.h>


int main()
{
  setlocale(LC_CTYPE, "");

  FILE* f = fopen("test.string", "r");

  long int position = ftell(f);
  wint_t character = fgetwc(f);
  while(character != WEOF)
  {
    printf("char: %lc  position: %ld\n", character, position);
    position = ftell(f);
    character = fgetwc(f);
  }

  fclose(f);

  return 0;
}

Makefile

ALL: file string

string: string.o
	cc -o $@ $<

file: file.o
	cc -o $@ $<

string.c

#include <wchar.h>
#include <stdio.h>
#include <locale.h>
#include <string.h>
#include <stdlib.h>


int main()
{
  setlocale(LC_CTYPE, "");

  const char *test_string = "A🍄B🌶C🍍";
  const char *test_string_end = test_string + strlen(test_string);

  mbstate_t mbs;
  mbsinit(&mbs);

  for(const char* str = test_string; str < test_string_end; )
  {
    wchar_t wchar;
    const int mbresult = mbtowc(&wchar, str, test_string_end - str);
    printf("mbtowc result: %d  char: %lc\n", mbresult, wchar);
    if(mbresult <= 0)
      break;
    str += mbresult;
  }

  return 0;
}

test.string

A🍄B🌶C🍍