Nokogiri::XML::Schema
class Nokogiri::XML::Schema
Nokogiri::XML::Schema is used for validating XML against a schema (usually from an xsd file).
Synopsis
Validate an XML document against a Schema. Loop over the errors that are returned and print them out:
xsd = Nokogiri::XML::Schema(File.read(PO_SCHEMA_FILE)) doc = Nokogiri::XML(File.read(PO_XML_FILE)) xsd.validate(doc).each do |error| puts error.message end
The list of errors are Nokogiri::XML::SyntaxError objects.
Attributes
Errors while parsing the schema file
Public Class Methods
Create a new Schema from the Nokogiri::XML::Document doc
static VALUE from_document(VALUE klass, VALUE document) { xmlDocPtr doc; xmlSchemaParserCtxtPtr ctx; xmlSchemaPtr schema; VALUE errors; VALUE rb_schema; Data_Get_Struct(document, xmlDoc, doc); /* In case someone passes us a node. ugh. */ doc = doc->doc; ctx = xmlSchemaNewDocParserCtxt(doc); errors = rb_ary_new(); xmlSetStructuredErrorFunc((void *)errors, Nokogiri_error_array_pusher); #ifdef HAVE_XMLSCHEMASETPARSERSTRUCTUREDERRORS xmlSchemaSetParserStructuredErrors( ctx, Nokogiri_error_array_pusher, (void *)errors ); #endif schema = xmlSchemaParse(ctx); xmlSetStructuredErrorFunc(NULL, NULL); xmlSchemaFreeParserCtxt(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; return Qnil; }
Create a new Nokogiri::XML::Schema object using a string_or_io
object.
# File lib/nokogiri/xml/schema.rb, line 36 def self.new string_or_io from_document Nokogiri::XML(string_or_io) end
Create a new Schema from the contents of string
static VALUE read_memory(VALUE klass, VALUE content) { xmlSchemaPtr schema; xmlSchemaParserCtxtPtr ctx = xmlSchemaNewMemParserCtxt( (const char *)StringValuePtr(content), (int)RSTRING_LEN(content) ); VALUE rb_schema; VALUE errors = rb_ary_new(); xmlSetStructuredErrorFunc((void *)errors, Nokogiri_error_array_pusher); #ifdef HAVE_XMLSCHEMASETPARSERSTRUCTUREDERRORS xmlSchemaSetParserStructuredErrors( ctx, Nokogiri_error_array_pusher, (void *)errors ); #endif schema = xmlSchemaParse(ctx); xmlSetStructuredErrorFunc(NULL, NULL); xmlSchemaFreeParserCtxt(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; }
Public Instance Methods
Returns true if thing
is a valid Nokogiri::XML::Document or file.
# File lib/nokogiri/xml/schema.rb, line 58 def valid? thing validate(thing).length == 0 end
Validate thing
against this schema. thing
can be a Nokogiri::XML::Document object, or a filename. An Array of Nokogiri::XML::SyntaxError objects found while validating the thing
is returned.
# File lib/nokogiri/xml/schema.rb, line 45 def validate thing if thing.is_a?(Nokogiri::XML::Document) validate_document(thing) elsif File.file?(thing) validate_file(thing) else raise ArgumentError, "Must provide Nokogiri::Xml::Document or the name of an existing file" end end
© 2008–2016 Aaron Patterson, Mike Dalessio, Charles Nutter, Sergio Arbeo
Patrick Mahoney, Yoko Harada, Akinori Musha, John Shahid
Licensed under the MIT License.