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#include <gcj/cni.h>
#include <java/io/ByteArrayInputStream.h>
#include <java/lang/System.h>
#include <java/lang/Throwable.h>
#include <java/util/ArrayList.h>
#include <javax/xml/xpath/XPath.h>
#include <javax/xml/xpath/XPathFactory.h>
#include <javax/xml/xpath/XPathExpression.h>
#include <javax/xml/xpath/XPathConstants.h>
#include <javax/xml/parsers/DocumentBuilderFactory.h>
#include <javax/xml/parsers/DocumentBuilder.h>
#include <org/w3c/dom/Attr.h>
#include <org/w3c/dom/Document.h>
#include <org/w3c/dom/Element.h>
#include <org/w3c/dom/NodeList.h>
#include <org/w3c/dom/NamedNodeMap.h>
#include <org/xml/sax/InputSource.h>
#include "nu/validator/htmlparser/dom/HtmlDocumentBuilder.h"
#include "DomUtils.h"
#include "ruby.h"
using namespace java::io;
using namespace java::lang;
using namespace java::util;
using namespace javax::xml::parsers;
using namespace javax::xml::xpath;
using namespace nu::validator::htmlparser::dom;
using namespace org::w3c::dom;
using namespace org::xml::sax;
static VALUE jaxp_Document;
static VALUE jaxp_Attr;
static VALUE jaxp_Element;
static ID ID_read;
static ID ID_doc;
static ID ID_element;
// convert a Java string into a Ruby string
static VALUE j2r(String *string) {
if (string == NULL) return Qnil;
jint len = JvGetStringUTFLength(string);
char buf[len];
JvGetStringUTFRegion(string, 0, len, buf);
return rb_str_new(buf, len);
}
// convert a Ruby string into a Java string
static String *r2j(VALUE string) {
return JvNewStringUTF(RSTRING(string)->ptr);
}
// release the Java Document associated with this Ruby Document
static void vnu_document_free(Document *doc) {
DomUtils::unpin(doc);
}
// Nu::Validator::parse( string|file )
static VALUE vnu_parse(VALUE self, VALUE input) {
HtmlDocumentBuilder *parser = new HtmlDocumentBuilder();
// read file-like objects into memory. TODO: buffer such objects
if (rb_respond_to(input, ID_read))
input = rb_funcall(input, ID_read, 0);
// convert input in to a ByteArrayInputStream
jbyteArray bytes = JvNewByteArray(RSTRING(input)->len);
memcpy(elements(bytes), RSTRING(input)->ptr, RSTRING(input)->len);
InputSource *source = new InputSource(new ByteArrayInputStream(bytes));
// parse, pin, and wrap
Document *doc = parser->parse(source);
DomUtils::pin(doc);
return Data_Wrap_Struct(jaxp_Document, NULL, vnu_document_free, doc);
}
// Jaxp::parse( string|file )
static VALUE jaxp_parse(VALUE self, VALUE input) {
DocumentBuilderFactory *factory = DocumentBuilderFactory::newInstance();
DocumentBuilder *parser = factory->newDocumentBuilder();
// read file-like objects into memory. TODO: buffer such objects
if (rb_respond_to(input, ID_read))
input = rb_funcall(input, ID_read, 0);
try {
jbyteArray bytes = JvNewByteArray(RSTRING(input)->len);
memcpy(elements(bytes), RSTRING(input)->ptr, RSTRING(input)->len);
Document *doc = parser->parse(new ByteArrayInputStream(bytes));
DomUtils::pin(doc);
return Data_Wrap_Struct(jaxp_Document, NULL, vnu_document_free, doc);
} catch (java::lang::Throwable *ex) {
ex->printStackTrace();
return Qnil;
}
}
// Nu::Validator::Document#encoding
static VALUE jaxp_document_encoding(VALUE rdoc) {
Document *jdoc;
Data_Get_Struct(rdoc, Document, jdoc);
return j2r(jdoc->getXmlEncoding());
}
// Nu::Validator::Document#root
static VALUE jaxp_document_root(VALUE rdoc) {
Document *jdoc;
Data_Get_Struct(rdoc, Document, jdoc);
Element *jelement = jdoc->getDocumentElement();
if (jelement==NULL) return Qnil;
VALUE relement = Data_Wrap_Struct(jaxp_Element, NULL, NULL, jelement);
rb_ivar_set(relement, ID_doc, rdoc);
return relement;
}
// Nu::Validator::Document#xpath
static VALUE jaxp_document_xpath(VALUE rdoc, VALUE path) {
Document *jdoc;
Data_Get_Struct(rdoc, Document, jdoc);
Element *jelement = jdoc->getDocumentElement();
if (jelement==NULL) return Qnil;
XPath *xpath = XPathFactory::newInstance()->newXPath();
XPathExpression *expr = xpath->compile(r2j(path));
NodeList *list = (NodeList*) expr->evaluate(jdoc, XPathConstants::NODESET);
VALUE result = rb_ary_new();
for (int i=0; i<list->getLength(); i++) {
VALUE relement = Data_Wrap_Struct(jaxp_Element, NULL, NULL, list->item(i));
rb_ivar_set(relement, ID_doc, rdoc);
rb_ary_push(result, relement);
}
return result;
}
// Nu::Validator::Element#name
static VALUE jaxp_element_name(VALUE relement) {
Element *jelement;
Data_Get_Struct(relement, Element, jelement);
return j2r(jelement->getNodeName());
}
// Nu::Validator::Element#attributes
static VALUE jaxp_element_attributes(VALUE relement) {
Element *jelement;
Data_Get_Struct(relement, Element, jelement);
VALUE result = rb_hash_new();
NamedNodeMap *map = jelement->getAttributes();
for (int i=0; i<map->getLength(); i++) {
Attr *jattr = (Attr *) map->item(i);
VALUE rattr = Data_Wrap_Struct(jaxp_Attr, NULL, NULL, jattr);
rb_ivar_set(rattr, ID_element, relement);
rb_hash_aset(result, j2r(jattr->getName()), rattr);
}
return result;
}
// Nu::Validator::Attribute#value
static VALUE jaxp_attribute_value(VALUE rattribute) {
Attr *jattribute;
Data_Get_Struct(rattribute, Attr, jattribute);
return j2r(jattribute->getValue());
}
typedef VALUE (ruby_method)(...);
// Nu::Validator module initialization
extern "C" void Init_validator() {
JvCreateJavaVM(NULL);
JvAttachCurrentThread(NULL, NULL);
JvInitClass(&DomUtils::class$);
JvInitClass(&XPathFactory::class$);
JvInitClass(&XPathConstants::class$);
VALUE jaxp = rb_define_module("Jaxp");
rb_define_singleton_method(jaxp, "parse", (ruby_method*)&jaxp_parse, 1);
VALUE nu = rb_define_module("Nu");
VALUE validator = rb_define_module_under(nu, "Validator");
rb_define_singleton_method(validator, "parse", (ruby_method*)&vnu_parse, 1);
jaxp_Document = rb_define_class_under(jaxp, "Document", rb_cObject);
rb_define_method(jaxp_Document, "encoding",
(ruby_method*)&jaxp_document_encoding, 0);
rb_define_method(jaxp_Document, "root",
(ruby_method*)&jaxp_document_root, 0);
rb_define_method(jaxp_Document, "xpath",
(ruby_method*)&jaxp_document_xpath, 1);
jaxp_Element = rb_define_class_under(jaxp, "Element", rb_cObject);
rb_define_method(jaxp_Element, "name",
(ruby_method*)&jaxp_element_name, 0);
rb_define_method(jaxp_Element, "attributes",
(ruby_method*)&jaxp_element_attributes, 0);
jaxp_Attr = rb_define_class_under(jaxp, "Attr", rb_cObject);
rb_define_method(jaxp_Attr, "value",
(ruby_method*)&jaxp_attribute_value, 0);
ID_read = rb_intern("read");
ID_doc = rb_intern("@doc");
ID_element = rb_intern("@element");
}
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