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

#include "ocaml.h"

CAMLprim value 
c_set_locale(value v, value str) {

    int param = 0;
    char* defined_locale;
    switch (Int_val(v)) {
        case 0: param = LC_ALL; break;
        case 1: param = LC_COLLATE; break;
        case 2: param = LC_CTYPE; break;
        case 3: param = LC_MONETARY; break;
        case 4: param = LC_NUMERIC; break;
        case 5: param = LC_TIME; break;
        case 6: param = LC_MESSAGES; break;
    }

    const char *locale_name = String_val(str);
    setlocale(param,locale_name);
    defined_locale = setlocale(param,NULL);
    return caml_copy_string(defined_locale);

}

CAMLprim value
c_length( value v ) {

    char *s;
    int len = 0;
    int i = 0, sum = 0;
    s = String_val(v);

    while ( ( len = mbtowc (NULL, &s[i], MB_CUR_MAX )) != 0) {
        i += len;
        sum++;
    }

    return Val_int(sum);

}