/* * call-seq: * from_memory(string, url = nil, encoding = nil, options = 0) * * Create a new reader that parses +string+ */ static VALUE from_memory(int argc, VALUE *argv, VALUE klass) { VALUE rb_buffer, rb_url, encoding, rb_options; xmlTextReaderPtr reader; const char * c_url = NULL; const char * c_encoding = NULL; int c_options = 0; VALUE rb_reader, args[3]; rb_scan_args(argc, argv, "13", &rb_buffer, &rb_url, &encoding, &rb_options); if (!RTEST(rb_buffer)) rb_raise(rb_eArgError, "string cannot be nil"); if (RTEST(rb_url)) c_url = StringValuePtr(rb_url); if (RTEST(encoding)) c_encoding = StringValuePtr(encoding); if (RTEST(rb_options)) c_options = (int)NUM2INT(rb_options); reader = xmlReaderForMemory( StringValuePtr(rb_buffer), (int)RSTRING_LEN(rb_buffer), c_url, c_encoding, c_options ); if(reader == NULL) { xmlFreeTextReader(reader); rb_raise(rb_eRuntimeError, "couldn't create a parser"); } rb_reader = Data_Wrap_Struct(klass, NULL, dealloc, reader); args[0] = rb_buffer; args[1] = rb_url; args[2] = encoding; rb_obj_call_init(rb_reader, 3, args); return rb_reader; }