08-27-周三_17-09-29

node_modules/cheerio/lib/parse.js

@@ -0,0 +1,86 @@
+/*
+  Module Dependencies
+*/
+var htmlparser = require('htmlparser2');
+
+/*
+  Parser
+*/
+exports = module.exports = function(content, options) {
+  var dom = exports.evaluate(content, options),
+      // Generic root element
+      root = exports.evaluate('<root></root>', options)[0];
+
+  root.type = 'root';
+
+  // Update the dom using the root
+  exports.update(dom, root);
+
+  return root;
+};
+
+exports.evaluate = function(content, options) {
+  // options = options || $.fn.options;
+
+  var dom;
+
+  if (typeof content === 'string' || Buffer.isBuffer(content)) {
+    dom = htmlparser.parseDOM(content, options);
+  } else {
+    dom = content;
+  }
+
+  return dom;
+};
+
+/*
+  Update the dom structure, for one changed layer
+*/
+exports.update = function(arr, parent) {
+  // normalize
+  if (!Array.isArray(arr)) arr = [arr];
+
+  // Update parent
+  if (parent) {
+    parent.children = arr;
+  } else {
+    parent = null;
+  }
+
+  // Update neighbors
+  for (var i = 0; i < arr.length; i++) {
+    var node = arr[i];
+
+    // Cleanly remove existing nodes from their previous structures.
+    var oldParent = node.parent || node.root,
+        oldSiblings = oldParent && oldParent.children;
+    if (oldSiblings && oldSiblings !== arr) {
+      oldSiblings.splice(oldSiblings.indexOf(node), 1);
+      if (node.prev) {
+        node.prev.next = node.next;
+      }
+      if (node.next) {
+        node.next.prev = node.prev;
+      }
+    }
+
+    if (parent) {
+      node.prev = arr[i - 1] || null;
+      node.next = arr[i + 1] || null;
+    } else {
+      node.prev = node.next = null;
+    }
+
+    if (parent && parent.type === 'root') {
+      node.root = parent;
+      node.parent = null;
+    } else {
+      node.root = null;
+      node.parent = parent;
+    }
+  }
+
+  return parent;
+};
+
+// module.exports = $.extend(exports);