planning

node_modules/hast-util-parse-selector/index.js

@@ -0,0 +1,43 @@
+'use strict'
+
+module.exports = parse
+
+var search = /[#.]/g
+
+// Create a hast element from a simple CSS selector.
+function parse(selector, defaultTagName) {
+  var value = selector || ''
+  var name = defaultTagName || 'div'
+  var props = {}
+  var start = 0
+  var subvalue
+  var previous
+  var match
+
+  while (start < value.length) {
+    search.lastIndex = start
+    match = search.exec(value)
+    subvalue = value.slice(start, match ? match.index : value.length)
+
+    if (subvalue) {
+      if (!previous) {
+        name = subvalue
+      } else if (previous === '#') {
+        props.id = subvalue
+      } else if (props.className) {
+        props.className.push(subvalue)
+      } else {
+        props.className = [subvalue]
+      }
+
+      start += subvalue.length
+    }
+
+    if (match) {
+      previous = match[0]
+      start++
+    }
+  }
+
+  return {type: 'element', tagName: name, properties: props, children: []}
+}