WIP - add extractor, generate snippet_data

node_modules/unist-util-select/index.js

@@ -0,0 +1,40 @@
+'use strict';
+
+var parseSelector = require('./lib/selector'),
+    matchSelector = require('./lib/select');
+
+var debug = require('debug')('unist-util-select');
+
+
+var select = function select (ast, selector) {
+  if (arguments.length == 1) {
+    return select.bind(this, ast);
+  }
+
+  debug('Selector: %j', selector);
+  selector = parseSelector(selector);
+  debug('AST: %s',
+        JSON.stringify(selector, null, 2).replace(/(^|\n)/g, '\n    '));
+  return selector ? matchSelector[selector.type](selector, ast) : [];
+};
+
+
+select.one = function selectOne (ast, selector) {
+  if (arguments.length == 1) {
+    return selectOne.bind(this, ast);
+  }
+
+  var nodes = select(ast, selector);
+
+  if (!nodes.length) {
+    throw Error('Node not found by ' + JSON.stringify(selector));
+  }
+  if (nodes.length > 1) {
+    throw Error('Node matched by ' + JSON.stringify(selector) + ' is not unique');
+  }
+
+  return nodes[0];
+};
+
+
+module.exports = select;