class Nokogiri::XML::RelaxNG

Nokogiri::XML::RelaxNG is used for validating XML against a RelaxNG schema.


Validate an XML document against a RelaxNG schema. Loop over the errors that are returned and print them out:

schema  = Nokogiri::XML::RelaxNG(
doc     = Nokogiri::XML(

schema.validate(doc).each do |error|
  puts error.message

The list of errors are Nokogiri::XML::SyntaxError objects.

NOTE: RelaxNG input is always treated as TRUSTED documents, meaning that they will cause the underlying parsing libraries to access network resources. This is counter to Nokogiri’s “untrusted by default” security policy, but is a limitation of the underlying libraries.

Public Class Methods

from_document(doc) click to toggle source

Create a new RelaxNG schema from the Nokogiri::XML::Document doc

static VALUE
from_document(int argc, VALUE *argv, VALUE klass)
  VALUE rb_document;
  VALUE rb_parse_options;
  xmlDocPtr c_document;
  xmlRelaxNGParserCtxtPtr c_parser_context;

  rb_scan_args(argc, argv, "11", &rb_document, &rb_parse_options);

  c_document = noko_xml_document_unwrap(rb_document);
  c_document = c_document->doc; /* In case someone passes us a node. ugh. */

  c_parser_context = xmlRelaxNGNewDocParserCtxt(c_document);

  return xml_relax_ng_parse_schema(klass, c_parser_context, rb_parse_options);
read_memory(string) click to toggle source

Create a new RelaxNG from the contents of string

static VALUE
read_memory(int argc, VALUE *argv, VALUE klass)
  VALUE rb_content;
  VALUE rb_parse_options;
  xmlRelaxNGParserCtxtPtr c_parser_context;

  rb_scan_args(argc, argv, "11", &rb_content, &rb_parse_options);

  c_parser_context = xmlRelaxNGNewMemParserCtxt(
                       (const char *)StringValuePtr(rb_content),

  return xml_relax_ng_parse_schema(klass, c_parser_context, rb_parse_options);