WIP - add extractor, generate snippet_data

node_modules/remark-parse/lib/tokenize/footnote-definition.js

@@ -0,0 +1,186 @@
+'use strict'
+
+var whitespace = require('is-whitespace-character')
+var normalize = require('../util/normalize')
+
+module.exports = footnoteDefinition
+footnoteDefinition.notInList = true
+footnoteDefinition.notInBlock = true
+
+var backslash = '\\'
+var lineFeed = '\n'
+var tab = '\t'
+var space = ' '
+var leftSquareBracket = '['
+var rightSquareBracket = ']'
+var caret = '^'
+var colon = ':'
+
+var EXPRESSION_INITIAL_TAB = /^( {4}|\t)?/gm
+
+function footnoteDefinition(eat, value, silent) {
+  var self = this
+  var offsets = self.offset
+  var index
+  var length
+  var subvalue
+  var now
+  var currentLine
+  var content
+  var queue
+  var subqueue
+  var character
+  var identifier
+  var add
+  var exit
+
+  if (!self.options.footnotes) {
+    return
+  }
+
+  index = 0
+  length = value.length
+  subvalue = ''
+  now = eat.now()
+  currentLine = now.line
+
+  while (index < length) {
+    character = value.charAt(index)
+
+    if (!whitespace(character)) {
+      break
+    }
+
+    subvalue += character
+    index++
+  }
+
+  if (
+    value.charAt(index) !== leftSquareBracket ||
+    value.charAt(index + 1) !== caret
+  ) {
+    return
+  }
+
+  subvalue += leftSquareBracket + caret
+  index = subvalue.length
+  queue = ''
+
+  while (index < length) {
+    character = value.charAt(index)
+
+    if (character === rightSquareBracket) {
+      break
+    } else if (character === backslash) {
+      queue += character
+      index++
+      character = value.charAt(index)
+    }
+
+    queue += character
+    index++
+  }
+
+  if (
+    !queue ||
+    value.charAt(index) !== rightSquareBracket ||
+    value.charAt(index + 1) !== colon
+  ) {
+    return
+  }
+
+  if (silent) {
+    return true
+  }
+
+  identifier = queue
+  subvalue += queue + rightSquareBracket + colon
+  index = subvalue.length
+
+  while (index < length) {
+    character = value.charAt(index)
+
+    if (character !== tab && character !== space) {
+      break
+    }
+
+    subvalue += character
+    index++
+  }
+
+  now.column += subvalue.length
+  now.offset += subvalue.length
+  queue = ''
+  content = ''
+  subqueue = ''
+
+  while (index < length) {
+    character = value.charAt(index)
+
+    if (character === lineFeed) {
+      subqueue = character
+      index++
+
+      while (index < length) {
+        character = value.charAt(index)
+
+        if (character !== lineFeed) {
+          break
+        }
+
+        subqueue += character
+        index++
+      }
+
+      queue += subqueue
+      subqueue = ''
+
+      while (index < length) {
+        character = value.charAt(index)
+
+        if (character !== space) {
+          break
+        }
+
+        subqueue += character
+        index++
+      }
+
+      if (subqueue.length === 0) {
+        break
+      }
+
+      queue += subqueue
+    }
+
+    if (queue) {
+      content += queue
+      queue = ''
+    }
+
+    content += character
+    index++
+  }
+
+  subvalue += content
+
+  content = content.replace(EXPRESSION_INITIAL_TAB, function(line) {
+    offsets[currentLine] = (offsets[currentLine] || 0) + line.length
+    currentLine++
+
+    return ''
+  })
+
+  add = eat(subvalue)
+
+  exit = self.enterBlock()
+  content = self.tokenizeBlock(content, now)
+  exit()
+
+  return add({
+    type: 'footnoteDefinition',
+    identifier: normalize(identifier),
+    label: identifier,
+    children: content
+  })
+}