iconvctl − control iconv behavior
#include <iconv.h>
int iconvctl (iconv_t cd , int request, void * argument);
The argument cd must be a conversion descriptor created using the function iconv_open.
iconvctl queries or adjusts the behavior of the iconv function, when invoked with the specified conversion descriptor, depending on the request value.
The following
are permissible values for the request parameter.
ICONV_TRIVIALP
argument should be an int * which will receive 1 if the conversion is trivial, or 0 otherwise.
ICONV_GET_TRANSLITERATE
argument should be an int * which will receive 1 if transliteration is enabled in the conversion, or 0 otherwise.
ICONV_SET_TRANSLITERATE
argument should be a const int *, pointing to an int value. A non-zero value is used to enable transliteration in the conversion. A zero value disables it.
ICONV_GET_DISCARD_ILSEQ
argument should be an int * which will receive 1 if "illegal sequence discard and continue" is enabled in the conversion, or 0 otherwise.
ICONV_SET_DISCARD_ILSEQ
argument should be a const int *, pointing to an int value. A non-zero value is used to enable "illegal sequence discard and continue" in the conversion. A zero value disables it.
The iconvctl function returns 0 if it succeeds. In case of error, it sets errno and returns −1.
The following errors can occur, among others:
|
EINVAL |
The request is invalid. |
This function is implemented only in GNU libiconv and not in other iconv implementations. It is not backed by a standard. You can test for its presence through (_LIBICONV_VERSION >= 0x0108).
iconv_open(3) iconv(3)