ICONV.cpp

Go to the documentation of this file.

// checking for iconv() in <iconv.h>
 
 
#include <iconv.h>
#include <stddef.h>
 
extern "C" {
 
typedef size_t (f_i_cppc)(iconv_t, const char**, size_t*, char**, size_t*);
typedef size_t (f_i_cpp) (iconv_t,       char**, size_t*, char**, size_t*);
 
}
 
 
const char* foo (f_i_cppc*) { return "const char**"; }
const char* foo (f_i_cpp*)  { return "char**"; }
 
 
const char* bar ()
{
    return foo (&iconv);
}
 
 
// include last so as not to pollute the global namespace
// and skew the result of the test
#include <stdio.h>
 
 
int main ()
{
    const char *argtype = bar ();
 
    if ('o' == argtype [1]) {
        // iconv() second argument type is const char**
        printf ("// ");
    }
 
    // may be commented out in the printf statement above
    printf ("#define _RWSTD_NO_ICONV_CONST_CHAR\n");
 
    printf ("#define _RWSTD_ICONV_ARG2_T %s\n", argtype);
 
    return 0;
}