WIP - add extractor, generate snippet_data

node_modules/remark-parse/lib/tokenize/heading-atx.js

@@ -0,0 +1,135 @@
+'use strict'
+
+module.exports = atxHeading
+
+var lineFeed = '\n'
+var tab = '\t'
+var space = ' '
+var numberSign = '#'
+
+var maxFenceCount = 6
+
+function atxHeading(eat, value, silent) {
+  var self = this
+  var pedantic = self.options.pedantic
+  var length = value.length + 1
+  var index = -1
+  var now = eat.now()
+  var subvalue = ''
+  var content = ''
+  var character
+  var queue
+  var depth
+
+  // Eat initial spacing.
+  while (++index < length) {
+    character = value.charAt(index)
+
+    if (character !== space && character !== tab) {
+      index--
+      break
+    }
+
+    subvalue += character
+  }
+
+  // Eat hashes.
+  depth = 0
+
+  while (++index <= length) {
+    character = value.charAt(index)
+
+    if (character !== numberSign) {
+      index--
+      break
+    }
+
+    subvalue += character
+    depth++
+  }
+
+  if (depth > maxFenceCount) {
+    return
+  }
+
+  if (!depth || (!pedantic && value.charAt(index + 1) === numberSign)) {
+    return
+  }
+
+  length = value.length + 1
+
+  // Eat intermediate white-space.
+  queue = ''
+
+  while (++index < length) {
+    character = value.charAt(index)
+
+    if (character !== space && character !== tab) {
+      index--
+      break
+    }
+
+    queue += character
+  }
+
+  // Exit when not in pedantic mode without spacing.
+  if (!pedantic && queue.length === 0 && character && character !== lineFeed) {
+    return
+  }
+
+  if (silent) {
+    return true
+  }
+
+  // Eat content.
+  subvalue += queue
+  queue = ''
+  content = ''
+
+  while (++index < length) {
+    character = value.charAt(index)
+
+    if (!character || character === lineFeed) {
+      break
+    }
+
+    if (character !== space && character !== tab && character !== numberSign) {
+      content += queue + character
+      queue = ''
+      continue
+    }
+
+    while (character === space || character === tab) {
+      queue += character
+      character = value.charAt(++index)
+    }
+
+    // `#` without a queue is part of the content.
+    if (!pedantic && content && !queue && character === numberSign) {
+      content += character
+      continue
+    }
+
+    while (character === numberSign) {
+      queue += character
+      character = value.charAt(++index)
+    }
+
+    while (character === space || character === tab) {
+      queue += character
+      character = value.charAt(++index)
+    }
+
+    index--
+  }
+
+  now.column += subvalue.length
+  now.offset += subvalue.length
+  subvalue += content + queue
+
+  return eat(subvalue)({
+    type: 'heading',
+    depth: depth,
+    children: self.tokenizeInline(content, now)
+  })
+}