/*********************
return RET_NOK on error
*********************/
ret_code_t entry_read_int(const char * table, const char * file, int * res, ...)
{
ret_code_t ret;
va_list ap;
va_start(ap, res);
ret = __read_int(table, file, res, ap);
va_end(ap);
return ret;
}
static bool fortio_is_fortran_stream__(FILE * stream , bool endian_flip) {
const bool strict_checking = true; /* True: requires that *ALL* records in the file are fortran formatted */
offset_type init_pos = util_ftell(stream);
bool is_fortran_stream = false;
int header , tail;
bool cont;
do {
cont = false;
if (__read_int(stream , &header , endian_flip)) {
if (header >= 0) {
if (util_fseek(stream , (offset_type) header , SEEK_CUR) == 0) {
if (__read_int(stream , &tail , endian_flip)) {
cont = true;
/*
OK - now we have read a header and a tail - it might be
a fortran file.
*/
if (header == tail) {
if (header != 0) {
/* This is (most probably) a fortran file */
is_fortran_stream = true;
if (strict_checking)
cont = true;
else
cont = false;
}
/* Header == tail == 0 - we don't make any inference on this. */
} else {
/* Header != tail => this is *not* a fortran file */
cont = false;
is_fortran_stream = false;
}
}
}
}
}
} while (cont);
util_fseek(stream , init_pos , SEEK_SET);
return is_fortran_stream;
}