planning

node_modules/mdast-util-to-markdown/lib/handle/link.js

@@ -0,0 +1,70 @@
+module.exports = link
+link.peek = linkPeek
+
+var checkQuote = require('../util/check-quote')
+var formatLinkAsAutolink = require('../util/format-link-as-autolink')
+var phrasing = require('../util/container-phrasing')
+var safe = require('../util/safe')
+
+function link(node, _, context) {
+  var quote = checkQuote(context)
+  var suffix = quote === '"' ? 'Quote' : 'Apostrophe'
+  var exit
+  var subexit
+  var value
+  var stack
+
+  if (formatLinkAsAutolink(node, context)) {
+    // Hide the fact that we’re in phrasing, because escapes don’t work.
+    stack = context.stack
+    context.stack = []
+    exit = context.enter('autolink')
+    value = '<' + phrasing(node, context, {before: '<', after: '>'}) + '>'
+    exit()
+    context.stack = stack
+    return value
+  }
+
+  exit = context.enter('link')
+  subexit = context.enter('label')
+  value = '[' + phrasing(node, context, {before: '[', after: ']'}) + ']('
+  subexit()
+
+  if (
+    // If there’s no url but there is a title…
+    (!node.url && node.title) ||
+    // Or if there’s markdown whitespace or an eol, enclose.
+    /[ \t\r\n]/.test(node.url)
+  ) {
+    subexit = context.enter('destinationLiteral')
+    value += '<' + safe(context, node.url, {before: '<', after: '>'}) + '>'
+  } else {
+    // No whitespace, raw is prettier.
+    subexit = context.enter('destinationRaw')
+    value += safe(context, node.url, {
+      before: '(',
+      after: node.title ? ' ' : ')'
+    })
+  }
+
+  subexit()
+
+  if (node.title) {
+    subexit = context.enter('title' + suffix)
+    value +=
+      ' ' +
+      quote +
+      safe(context, node.title, {before: quote, after: quote}) +
+      quote
+    subexit()
+  }
+
+  value += ')'
+
+  exit()
+  return value
+}
+
+function linkPeek(node, _, context) {
+  return formatLinkAsAutolink(node, context) ? '<' : '['
+}