anorgatarrak-wordpress-theme/node_modules/domutils/lib/helpers.js

32 lines
706 B
JavaScript

// removeSubsets
// Given an array of nodes, remove any member that is contained by another.
exports.removeSubsets = function(nodes) {
var idx = nodes.length, node, ancestor, replace;
// Check if each node (or one of its ancestors) is already contained in the
// array.
while (--idx > -1) {
node = ancestor = nodes[idx];
// Temporarily remove the node under consideration
nodes[idx] = null;
replace = true;
while (ancestor) {
if (nodes.indexOf(ancestor) > -1) {
replace = false;
nodes.splice(idx, 1);
break;
}
ancestor = ancestor.parent;
}
// If the node has been found to be unique, re-insert it.
if (replace) {
nodes[idx] = node;
}
}
return nodes;
};