Class: Nokogiri::XML::RelaxNG

Inherits:
NokogiriXmlSchema
  • Object
show all
Defined in:
lib/nokogiri/xml/relax_ng.rb,
ext/nokogiri/xml_relax_ng.c

Overview

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

Synopsis

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

schema  = Nokogiri::XML::RelaxNG(File.open(ADDRESS_SCHEMA_FILE))
doc     = Nokogiri::XML(File.open(ADDRESS_XML_FILE))

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

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

Class Method Summary collapse

Class Method Details

.from_document(doc) ⇒ Object

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



103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
 
# File 'ext/nokogiri/xml_relax_ng.c', line 103

static VALUE from_document(VALUE klass, VALUE document)
{
  xmlDocPtr doc;
  xmlRelaxNGParserCtxtPtr ctx;
  xmlRelaxNGPtr schema;
  VALUE errors;
  VALUE rb_schema;

  Data_Get_Struct(document, xmlDoc, doc);

  /* In case someone passes us a node. ugh. */
  doc = doc->doc;

  ctx = xmlRelaxNGNewDocParserCtxt(doc);

  errors = rb_ary_new();
  xmlSetStructuredErrorFunc((void *)errors, Nokogiri_error_array_pusher);

#ifdef HAVE_XMLRELAXNGSETPARSERSTRUCTUREDERRORS
  xmlRelaxNGSetParserStructuredErrors(
    ctx,
    Nokogiri_error_array_pusher,
    (void *)errors
  );
#endif

  schema = xmlRelaxNGParse(ctx);

  xmlSetStructuredErrorFunc(NULL, NULL);

  if(NULL == schema) {
    xmlErrorPtr error = xmlGetLastError();
    if(error)
      Nokogiri_error_raise(NULL, error);
    else
      rb_raise(rb_eRuntimeError, "Could not parse document");

    return Qnil;
  }

  rb_schema = Data_Wrap_Struct(klass, 0, dealloc, schema);
  rb_iv_set(rb_schema, "@errors", errors);

  return rb_schema;
}

.read_memory(string) ⇒ Object

Create a new RelaxNG from the contents of string



56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
 
# File 'ext/nokogiri/xml_relax_ng.c', line 56

static VALUE read_memory(VALUE klass, VALUE content)
{
  xmlRelaxNGParserCtxtPtr ctx = xmlRelaxNGNewMemParserCtxt(
      (const char *)StringValuePtr(content),
      (int)RSTRING_LEN(content)
  );
  xmlRelaxNGPtr schema;
  VALUE errors = rb_ary_new();
  VALUE rb_schema;

  xmlSetStructuredErrorFunc((void *)errors, Nokogiri_error_array_pusher);

#ifdef HAVE_XMLRELAXNGSETPARSERSTRUCTUREDERRORS
  xmlRelaxNGSetParserStructuredErrors(
    ctx,
    Nokogiri_error_array_pusher,
    (void *)errors
  );
#endif

  schema = xmlRelaxNGParse(ctx);

  xmlSetStructuredErrorFunc(NULL, NULL);
  xmlRelaxNGFreeParserCtxt(ctx);

  if(NULL == schema) {
    xmlErrorPtr error = xmlGetLastError();
    if(error)
      Nokogiri_error_raise(NULL, error);
    else
      rb_raise(rb_eRuntimeError, "Could not parse document");

    return Qnil;
  }

  rb_schema = Data_Wrap_Struct(klass, 0, dealloc, schema);
  rb_iv_set(rb_schema, "@errors", errors);

  return rb_schema;
}