Closes the read end of a StringIO. Will raise an IOError if the strio is not readable.
/*
* call-seq:
* strio.close_read -> nil
*
* Closes the read end of a StringIO. Will raise an +IOError+ if the
* *strio* is not readable.
*/
static VALUE
strio_close_read(self)
VALUE self;
{
struct StringIO *ptr = StringIO(self);
if (!READABLE(ptr)) {
rb_raise(rb_eIOError, "closing non-duplex IO for reading");
}
ptr->flags &= ~FMODE_READABLE;
return Qnil;
}