/* * call-seq: * transform(document, params = []) * * Apply an XSLT stylesheet to an XML::Document. * +params+ is an array of strings used as XSLT parameters. * returns Nokogiri::XML::Document * * Example: * * doc = Nokogiri::XML(File.read(ARGV[0])) * xslt = Nokogiri::XSLT(File.read(ARGV[1])) * puts xslt.transform(doc, ['key', 'value']) * */ static VALUE transform(int argc, VALUE* argv, VALUE self) { VALUE xmldoc, paramobj, errstr, exception ; xmlDocPtr xml ; xmlDocPtr result ; nokogiriXsltStylesheetTuple *wrapper; const char** params ; long param_len, j ; int parse_error_occurred ; rb_scan_args(argc, argv, "11", &xmldoc, ¶mobj); if (NIL_P(paramobj)) { paramobj = rb_ary_new2(0L) ; } if (!rb_obj_is_kind_of(xmldoc, cNokogiriXmlDocument)) rb_raise(rb_eArgError, "argument must be a Nokogiri::XML::Document"); /* handle hashes as arguments. */ if(T_HASH == TYPE(paramobj)) { paramobj = rb_funcall(paramobj, rb_intern("to_a"), 0); paramobj = rb_funcall(paramobj, rb_intern("flatten"), 0); } Check_Type(paramobj, T_ARRAY); Data_Get_Struct(xmldoc, xmlDoc, xml); Data_Get_Struct(self, nokogiriXsltStylesheetTuple, wrapper); param_len = RARRAY_LEN(paramobj); params = calloc((size_t)param_len+1, sizeof(char*)); for (j = 0 ; j < param_len ; j++) { VALUE entry = rb_ary_entry(paramobj, j); const char * ptr = StringValuePtr(entry); params[j] = ptr; } params[param_len] = 0 ; errstr = rb_str_new(0, 0); xsltSetGenericErrorFunc((void *)errstr, xslt_generic_error_handler); xmlSetGenericErrorFunc(NULL, (xmlGenericErrorFunc)&swallow_superfluous_xml_errors); result = xsltApplyStylesheet(wrapper->ss, xml, params); free(params); xsltSetGenericErrorFunc(NULL, NULL); xmlSetGenericErrorFunc(NULL, NULL); parse_error_occurred = (Qfalse == rb_funcall(errstr, rb_intern("empty?"), 0)); if (parse_error_occurred) { exception = rb_exc_new3(rb_eRuntimeError, errstr); rb_exc_raise(exception); } return Nokogiri_wrap_xml_document((VALUE)0, result) ; }