08-27-周三_17-09-29

node_modules/dom-serializer/index.js

@@ -0,0 +1,148 @@
+/*
+  Module dependencies
+*/
+var ElementType = require('domelementtype');
+var entities = require('entities');
+
+var unencodedElements = {
+  __proto__: null,
+  style: true,
+  script: true,
+  xmp: true,
+  iframe: true,
+  noembed: true,
+  noframes: true,
+  plaintext: true,
+  noscript: true
+};
+
+/*
+  Format attributes
+*/
+function formatAttrs(attributes, opts) {
+  if (!attributes) return;
+
+  var output = '',
+      value;
+
+  // Loop through the attributes
+  for (var key in attributes) {
+    value = attributes[key];
+    if (output) {
+      output += ' ';
+    }
+
+    output += key;
+    if ((value !== null && value !== '') || opts.xmlMode) {
+        output += '="' + (opts.decodeEntities ? entities.encodeXML(value) : value) + '"';
+    }
+  }
+
+  return output;
+}
+
+/*
+  Self-enclosing tags (stolen from node-htmlparser)
+*/
+var singleTag = {
+  __proto__: null,
+  area: true,
+  base: true,
+  basefont: true,
+  br: true,
+  col: true,
+  command: true,
+  embed: true,
+  frame: true,
+  hr: true,
+  img: true,
+  input: true,
+  isindex: true,
+  keygen: true,
+  link: true,
+  meta: true,
+  param: true,
+  source: true,
+  track: true,
+  wbr: true,
+};
+
+
+var render = module.exports = function(dom, opts) {
+  if (!Array.isArray(dom) && !dom.cheerio) dom = [dom];
+  opts = opts || {};
+
+  var output = '';
+
+  for(var i = 0; i < dom.length; i++){
+    var elem = dom[i];
+
+    if (elem.type === 'root')
+      output += render(elem.children, opts);
+    else if (ElementType.isTag(elem))
+      output += renderTag(elem, opts);
+    else if (elem.type === ElementType.Directive)
+      output += renderDirective(elem);
+    else if (elem.type === ElementType.Comment)
+      output += renderComment(elem);
+    else if (elem.type === ElementType.CDATA)
+      output += renderCdata(elem);
+    else
+      output += renderText(elem, opts);
+  }
+
+  return output;
+};
+
+function renderTag(elem, opts) {
+  // Handle SVG
+  if (elem.name === "svg") opts = {decodeEntities: opts.decodeEntities, xmlMode: true};
+
+  var tag = '<' + elem.name,
+      attribs = formatAttrs(elem.attribs, opts);
+
+  if (attribs) {
+    tag += ' ' + attribs;
+  }
+
+  if (
+    opts.xmlMode
+    && (!elem.children || elem.children.length === 0)
+  ) {
+    tag += '/>';
+  } else {
+    tag += '>';
+    if (elem.children) {
+      tag += render(elem.children, opts);
+    }
+
+    if (!singleTag[elem.name] || opts.xmlMode) {
+      tag += '</' + elem.name + '>';
+    }
+  }
+
+  return tag;
+}
+
+function renderDirective(elem) {
+  return '<' + elem.data + '>';
+}
+
+function renderText(elem, opts) {
+  var data = elem.data || '';
+
+  // if entities weren't decoded, no need to encode them back
+  if (opts.decodeEntities && !(elem.parent && elem.parent.name in unencodedElements)) {
+    data = entities.encodeXML(data);
+  }
+
+  return data;
+}
+
+function renderCdata(elem) {
+  return '<![CDATA[' + elem.children[0].data + ']]>';
+}
+
+function renderComment(elem) {
+  return '<!--' + elem.data + '-->';
+}