/* * call-seq: * read_io(io, url, encoding, options) * * Create a new document from an IO object */ static VALUE read_io( VALUE klass, VALUE io, VALUE url, VALUE encoding, VALUE options ) { const char * c_url = (url == Qnil) ? NULL : StringValuePtr(url); const char * c_enc = (encoding == Qnil) ? NULL : StringValuePtr(encoding); xmlInitParser(); xmlDocPtr doc = xmlReadIO( (xmlInputReadCallback)io_read_callback, (xmlInputCloseCallback)io_close_callback, (void *)io, c_url, c_enc, NUM2INT(options) ); if(doc == NULL) { xmlFreeDoc(doc); rb_raise(rb_eRuntimeError, "Couldn't create a document"); return Qnil; } return Nokogiri_wrap_xml_document(klass, doc); }