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/**
* @file
* @author 2012-2013 Stefan Radomski (stefan.radomski@cs.tu-darmstadt.de)
* @copyright Simplified BSD
*
* @cond
* This program is free software: you can redistribute it and/or modify
* it under the terms of the FreeBSD license as published by the FreeBSD
* project.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* You should have received a copy of the FreeBSD license along with this
* program. If not, see <http://www.opensource.org/licenses/bsd-license>.
* @endcond
*/
#include <uscxml/Common.h>
#include "uscxml/UUID.h"
#include "uscxml/DOMUtils.h"
#include <uscxml/Convenience.h>
#include <glog/logging.h>
#include <SAX/helpers/InputSourceResolver.hpp>
namespace uscxml {
using namespace Arabica::XPath;
using namespace Arabica::DOM;
bool DOMUtils::attributeIsTrue(const::std::string& value) {
return stringIsTrue(value.c_str());
}
std::string DOMUtils::idForNode(const Arabica::DOM::Node<std::string>& node) {
std::string nodeId;
std::string seperator;
Arabica::DOM::Node<std::string> curr = node;
while(curr) {
switch (curr.getNodeType()) {
case Arabica::DOM::Node_base::ELEMENT_NODE: {
Arabica::DOM::Element<std::string> elem = Arabica::DOM::Element<std::string>(curr);
if (HAS_ATTR(elem, "id") && !UUID::isUUID(ATTR(elem, "id"))) {
std::string elementId = ATTR(elem, "id");
boost::replace_all(elementId, ".", "_");
boost::replace_all(elementId, ",", "_");
nodeId.insert(0, elementId + seperator);
seperator = "_";
return nodeId;
} else {
Arabica::DOM::Node<std::string> sibling = curr.getPreviousSibling();
int index = 0;
while(sibling) {
if (sibling.getNodeType() == Arabica::DOM::Node_base::ELEMENT_NODE) {
if (iequals(TAGNAME_CAST(sibling), TAGNAME(elem))) {
index++;
}
}
sibling = sibling.getPreviousSibling();
}
nodeId.insert(0, TAGNAME(elem) + toStr(index) + seperator);
seperator = "_";
}
break;
}
case Arabica::DOM::Node_base::DOCUMENT_NODE:
return nodeId;
}
curr = curr.getParentNode();
}
return nodeId;
}
std::string DOMUtils::xPathForNode(const Arabica::DOM::Node<std::string>& node, const std::string& ns) {
std::string xPath;
std::string nsPrefix;
if (ns.size() > 0) {
nsPrefix = ns + ":";
}
if (!node || node.getNodeType() != Arabica::DOM::Node_base::ELEMENT_NODE)
return xPath;
Arabica::DOM::Node<std::string> curr = node;
while(curr) {
switch (curr.getNodeType()) {
case Arabica::DOM::Node_base::ELEMENT_NODE: {
Arabica::DOM::Element<std::string> elem = Arabica::DOM::Element<std::string>(curr);
if (HAS_ATTR(elem, "id") && !UUID::isUUID(ATTR(elem, "id"))) {
// we assume ids to be unique and return immediately
if (ns == "*") {
xPath.insert(0, "//*[local-name() = \"" + TAGNAME(elem) + "\"][@id=\"" + ATTR(elem, "id") + "\"]");
} else {
xPath.insert(0, "//" + nsPrefix + TAGNAME(elem) + "[@id=\"" + ATTR(elem, "id") + "\"]");
}
return xPath;
} else {
// check previous siblings to count our index
Arabica::DOM::Node<std::string> sibling = curr.getPreviousSibling();
int index = 1; // xpath indices start at 1
while(sibling) {
if (sibling.getNodeType() == Arabica::DOM::Node_base::ELEMENT_NODE) {
if (iequals(TAGNAME_CAST(sibling), TAGNAME(elem))) {
index++;
}
}
sibling = sibling.getPreviousSibling();
}
if (ns == "*") {
xPath.insert(0, "/*[local-name() = \"" + TAGNAME(elem) + "\"][" + toStr(index) + "]");
} else {
xPath.insert(0, "/" + nsPrefix + TAGNAME(elem) + "[" + toStr(index) + "]");
}
}
break;
}
case Arabica::DOM::Node_base::DOCUMENT_NODE:
return xPath;
default:
LOG(ERROR) << "Only nodes of type element supported for now";
return "";
break;
}
curr = curr.getParentNode();
}
return xPath;
}
NodeSet<std::string> DOMUtils::inPostFixOrder(const std::set<std::string>& elements,
const Element<std::string>& root,
const bool includeEmbeddedDoc) {
NodeSet<std::string> nodes;
inPostFixOrder(elements, root, includeEmbeddedDoc, nodes);
return nodes;
}
void DOMUtils::inPostFixOrder(const std::set<std::string>& elements,
const Element<std::string>& root,
const bool includeEmbeddedDoc,
NodeSet<std::string>& nodes) {
NodeList<std::string> children = root.getChildNodes();
for (size_t i = 0; i < children.getLength(); i++) {
if (children.item(i).getNodeType() != Node_base::ELEMENT_NODE)
continue;
Arabica::DOM::Element<std::string> childElem(children.item(i));
if (!includeEmbeddedDoc && LOCALNAME(childElem) == "scxml")
continue;
inPostFixOrder(elements, childElem, includeEmbeddedDoc, nodes);
}
for (size_t i = 0; i < children.getLength(); i++) {
if (children.item(i).getNodeType() != Node_base::ELEMENT_NODE)
continue;
Arabica::DOM::Element<std::string> childElem(children.item(i));
if (!includeEmbeddedDoc && LOCALNAME(childElem) == "scxml")
continue;
if (elements.find(TAGNAME(childElem)) != elements.end()) {
nodes.push_back(childElem);
}
}
}
NodeSet<std::string> DOMUtils::inDocumentOrder(const std::set<std::string>& elements,
const Element<std::string>& root,
const bool includeEmbeddedDoc) {
NodeSet<std::string> nodes;
inDocumentOrder(elements, root, includeEmbeddedDoc, nodes);
return nodes;
}
void DOMUtils::inDocumentOrder(const std::set<std::string>& elements,
const Element<std::string>& root,
const bool includeEmbeddedDoc,
NodeSet<std::string>& nodes) {
if (elements.find(TAGNAME(root)) != elements.end()) {
nodes.push_back(root);
}
NodeList<std::string> children = root.getChildNodes();
for (size_t i = 0; i < children.getLength(); i++) {
if (children.item(i).getNodeType() != Node_base::ELEMENT_NODE)
continue;
if (!includeEmbeddedDoc && LOCALNAME_CAST(children.item(i)) == "scxml")
continue;
Arabica::DOM::Element<std::string> childElem(children.item(i));
inDocumentOrder(elements, childElem, includeEmbeddedDoc, nodes);
}
}
std::list<Arabica::DOM::Node<std::string> > DOMUtils::getElementsByType(const Arabica::DOM::Node<std::string>& root, Arabica::DOM::Node_base::Type type) {
std::list<Arabica::DOM::Node<std::string> > result;
std::list<Arabica::DOM::Node<std::string> > stack;
std::list<Arabica::DOM::Node<std::string> >::iterator stackIter;
if (!root)
return result;
stack.push_back(root);
while(stack.size() > 0) {
// for(stackIter = stack.begin(); stackIter != stack.end(); stackIter++) {
// std::cout << stackIter->getNodeType() << " " << stackIter->getLocalName() << " " << stackIter->getNodeValue() << std::endl;
// }
// std::cout << std::endl;
Arabica::DOM::Node<std::string> currNode = stack.back();
if (currNode.hasChildNodes()) {
stack.push_back(currNode.getFirstChild());
continue;
}
// roll back stack and pop everyone without next sibling
do {
currNode = stack.back();
if (currNode.getNodeType() == type)
result.push_back(currNode);
stack.pop_back();
if (currNode.getNextSibling()) {
stack.push_back(currNode.getNextSibling());
break;
}
} while(stack.size() > 0);
}
return result;
}
NameSpacingParser NameSpacingParser::fromFile(const std::string& file) {
Arabica::SAX::InputSource<std::string> inputSource;
inputSource.setSystemId(file);
return fromInputSource(inputSource);
}
NameSpacingParser NameSpacingParser::fromXML(const std::string& xml) {
std::stringstream* ss = new std::stringstream();
(*ss) << xml;
// we need an auto_ptr for arabica to assume ownership
std::auto_ptr<std::istream> ssPtr(ss);
Arabica::SAX::InputSource<std::string> inputSource;
inputSource.setByteStream(ssPtr);
return fromInputSource(inputSource);
}
NameSpacingParser NameSpacingParser::fromInputSource(Arabica::SAX::InputSource<std::string>& source) {
NameSpacingParser parser;
if(!parser.parse(source) || !parser.getDocument().hasChildNodes()) {
if(parser._errorHandler.errorsReported()) {
// LOG(ERROR) << "could not parse input:";
// LOG(ERROR) << parser._errorHandler.errors() << std::endl;
} else {
Arabica::SAX::InputSourceResolver resolver(source, Arabica::default_string_adaptor<std::string>());
if (!resolver.resolve()) {
LOG(ERROR) << source.getSystemId() << ": no such file";
}
}
}
return parser;
}
NameSpacingParser::NameSpacingParser() {
setErrorHandler(_errorHandler);
}
void NameSpacingParser::startPrefixMapping(const std::string& prefix, const std::string& uri) {
nameSpace.insert(std::make_pair(uri, prefix));
}
}
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