Truncate the locale ID string to get the parent locale ID. Copies the part of the string before the last underscore. The parent locale ID will be an empty string if there is no underscore, or if there is only one underscore at localeID[0].

Parameters:

localeID	Input locale ID string.
parent	Output string buffer for the parent locale ID.
parentCapacity	Size of the output buffer.
err	A UErrorCode value.

Returns:

The length of the parent locale ID. ICU 2.0

Definition at line 1800 of file uloc.c.

References NULL, and U_FAILURE.

{
    const char *lastUnderscore;
    int32_t i;
    
    if (U_FAILURE(*err))
        return 0;
    
    if (localeID == NULL)
        localeID = uloc_getDefault();

    lastUnderscore=uprv_strrchr(localeID, '_');
    if(lastUnderscore!=NULL) {
        i=(int32_t)(lastUnderscore-localeID);
    } else {
        i=0;
    }

    if(i>0 && parent != localeID) {
        uprv_memcpy(parent, localeID, uprv_min(i, parentCapacity));
    }
    return u_terminateChars(parent, parentCapacity, i, err);
}