ubdate

node_modules/gulp-cli/lib/shared/log/copy-tree.js

@@ -0,0 +1,81 @@
+'use strict';
+
+function copyNode(node) {
+  var newNode = {};
+  Object.keys(node).forEach(function(key) {
+    newNode[key] = node[key];
+  });
+  return newNode;
+}
+
+var defaultNodeFactory = {
+  topNode: copyNode,
+  taskNode: copyNode,
+  childNode: copyNode,
+};
+
+function copyTree(tree, opts, nodeFactory) {
+  opts = opts || {};
+
+  var depth = opts.tasksDepth;
+  depth = typeof depth === 'number' ? ((depth < 1) ? 1 : depth) : null;
+
+  nodeFactory = nodeFactory || defaultNodeFactory;
+
+  var newTree = nodeFactory.topNode(tree);
+  newTree.nodes = [];
+
+  if (Array.isArray(tree.nodes)) {
+    tree.nodes.forEach(visit);
+  }
+
+  function visit(node) {
+    var newNode = nodeFactory.taskNode(node);
+    newNode.nodes = [];
+    newTree.nodes.push(newNode);
+
+    if (opts.compactTasks) {
+      forEach(node.nodes, copyNotRecursively, newNode);
+
+    } else if (!depth || depth > 1) {
+      forEach(node.nodes, copyRecursively, depth, 2, newNode);
+    }
+  }
+
+  function copyNotRecursively(child, newParent) {
+    var newChild = nodeFactory.childNode(child);
+    newChild.nodes = [];
+    newParent.nodes.push(newChild);
+
+    if (child.branch) {
+      forEach(child.nodes, copyNotRecursively, newChild);
+    }
+  }
+
+  function copyRecursively(child, maxDepth, nowDepth, newParent) {
+    var newChild = nodeFactory.childNode(child);
+    newChild.nodes = [];
+    newParent.nodes.push(newChild);
+
+    if (!maxDepth || maxDepth > nowDepth) {
+      forEach(child.nodes, copyRecursively, maxDepth, nowDepth + 1, newChild);
+    }
+  }
+
+  return newTree;
+}
+
+function forEach(nodes, fn) {
+  if (!Array.isArray(nodes)) {
+    return;
+  }
+
+  var args = Array.prototype.slice.call(arguments, 2);
+
+  for (var i = 0, n = nodes.length; i < n; i++) {
+    fn.apply(nodes[i], [nodes[i]].concat(args));
+  }
+}
+
+module.exports = copyTree;
+