Added several usage examples, fixed bugs, turned off restore by default

libs/annotator/lib/xpath.js

@@ -0,0 +1,103 @@
+// Generated by CoffeeScript 1.6.3
+var findChild, getNodeName, getNodePosition, simpleXPathJQuery, simpleXPathPure;
+
+simpleXPathJQuery = function(relativeRoot) {
+  var jq;
+  jq = this.map(function() {
+    var elem, idx, path, tagName;
+    path = '';
+    elem = this;
+    while ((elem != null ? elem.nodeType : void 0) === Node.ELEMENT_NODE && elem !== relativeRoot) {
+      tagName = elem.tagName.replace(":", "\\:");
+      idx = $(elem.parentNode).children(tagName).index(elem) + 1;
+      idx = "[" + idx + "]";
+      path = "/" + elem.tagName.toLowerCase() + idx + path;
+      elem = elem.parentNode;
+    }
+    return path;
+  });
+  return jq.get();
+};
+
+simpleXPathPure = function(relativeRoot) {
+  var getPathSegment, getPathTo, jq, rootNode;
+  getPathSegment = function(node) {
+    var name, pos;
+    name = getNodeName(node);
+    pos = getNodePosition(node);
+    return "" + name + "[" + pos + "]";
+  };
+  rootNode = relativeRoot;
+  getPathTo = function(node) {
+    var xpath;
+    xpath = '';
+    while (node !== rootNode) {
+      if (node == null) {
+        throw new Error("Called getPathTo on a node which was not a descendant of @rootNode. " + rootNode);
+      }
+      xpath = (getPathSegment(node)) + '/' + xpath;
+      node = node.parentNode;
+    }
+    xpath = '/' + xpath;
+    xpath = xpath.replace(/\/$/, '');
+    return xpath;
+  };
+  jq = this.map(function() {
+    var path;
+    path = getPathTo(this);
+    return path;
+  });
+  return jq.get();
+};
+
+findChild = function(node, type, index) {
+  var child, children, found, name, _i, _len;
+  if (!node.hasChildNodes()) {
+    throw new Error("XPath error: node has no children!");
+  }
+  children = node.childNodes;
+  found = 0;
+  for (_i = 0, _len = children.length; _i < _len; _i++) {
+    child = children[_i];
+    name = getNodeName(child);
+    if (name === type) {
+      found += 1;
+      if (found === index) {
+        return child;
+      }
+    }
+  }
+  throw new Error("XPath error: wanted child not found.");
+};
+
+getNodeName = function(node) {
+  var nodeName;
+  nodeName = node.nodeName.toLowerCase();
+  switch (nodeName) {
+    case "#text":
+      return "text()";
+    case "#comment":
+      return "comment()";
+    case "#cdata-section":
+      return "cdata-section()";
+    default:
+      return nodeName;
+  }
+};
+
+getNodePosition = function(node) {
+  var pos, tmp;
+  pos = 0;
+  tmp = node;
+  while (tmp) {
+    if (tmp.nodeName === node.nodeName) {
+      pos++;
+    }
+    tmp = tmp.previousSibling;
+  }
+  return pos;
+};
+
+/*
+//@ sourceMappingURL=xpath.map
+*/