NAME

iconvctl - control iconv behavior

SYNOPSIS

#include <iconv.h>

int iconvctl (iconv_t cd , int request, void * argument);

DESCRIPTION

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.

REQUEST VALUES

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.

RETURN VALUE

The iconvctl function returns 0 if it succeeds. In case of error, it sets errno and returns -1.

ERRORS

The following errors can occur, among others:

EINVAL: The request is invalid.

CONFORMING TO

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).