switch to vuepress

1 files changed, 142 insertions, 0 deletions

diff --git a/node_modules/stylus/lib/functions/url.js b/node_modules/stylus/lib/functions/url.js
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+
+/*!
+ * Stylus - plugin - url
+ * Copyright (c) Automattic <developer.wordpress.com>
+ * MIT Licensed
+ */
+
+/**
+ * Module dependencies.
+ */
+
+var Compiler = require('../visitor/compiler')
+  , events = require('../renderer').events
+  , nodes = require('../nodes')
+  , parse = require('url').parse
+  , extname = require('path').extname
+  , utils = require('../utils')
+  , fs = require('fs');
+
+/**
+ * Mime table.
+ */
+
+var defaultMimes = {
+    '.gif': 'image/gif'
+  , '.png': 'image/png'
+  , '.jpg': 'image/jpeg'
+  , '.jpeg': 'image/jpeg'
+  , '.svg': 'image/svg+xml'
+  , '.webp': 'image/webp'
+  , '.ttf': 'application/x-font-ttf'
+  , '.eot': 'application/vnd.ms-fontobject'
+  , '.woff': 'application/font-woff'
+  , '.woff2': 'application/font-woff2'
+};
+
+/**
+ * Supported encoding types
+ */
+var encodingTypes = {
+  BASE_64: 'base64',
+  UTF8: 'charset=utf-8'
+}
+
+/**
+ * Return a url() function with the given `options`.
+ *
+ * Options:
+ *
+ *    - `limit` bytesize limit defaulting to 30Kb
+ *    - `paths` image resolution path(s), merged with general lookup paths
+ *
+ * Examples:
+ *
+ *    stylus(str)
+ *      .set('filename', __dirname + '/css/test.styl')
+ *      .define('url', stylus.url({ paths: [__dirname + '/public'] }))
+ *      .render(function(err, css){ ... })
+ *
+ * @param {Object} options
+ * @return {Function}
+ * @api public
+ */
+
+module.exports = function(options) {
+  options = options || {};
+
+  var _paths = options.paths || [];
+  var sizeLimit = null != options.limit ? options.limit : 30000;
+  var mimes = options.mimes || defaultMimes;
+
+  /**
+   * @param {object} url - The path to the image you want to encode.
+   * @param {object} enc - The encoding for the image. Defaults to base64, the 
+   * other valid option is `utf8`.
+   */
+  function fn(url, enc){
+    // Compile the url
+    var compiler = new Compiler(url)
+      , encoding = encodingTypes.BASE_64;
+
+    compiler.isURL = true;
+    url = url.nodes.map(function(node){
+      return compiler.visit(node);
+    }).join('');
+
+    // Parse literal
+    url = parse(url);
+    var ext = extname(url.pathname)
+      , mime = mimes[ext]
+      , hash = url.hash || ''
+      , literal = new nodes.Literal('url("' + url.href + '")')
+      , paths = _paths.concat(this.paths)
+      , buf
+      , result;
+
+    // Not supported
+    if (!mime) return literal;
+
+    // Absolute
+    if (url.protocol) return literal;
+
+    // Lookup
+    var found = utils.lookup(url.pathname, paths);
+
+    // Failed to lookup
+    if (!found) {
+      events.emit(
+          'file not found'
+        , 'File ' + literal + ' could not be found, literal url retained!'
+      );
+
+      return literal;
+    }
+
+    // Read data
+    buf = fs.readFileSync(found);
+
+    // Too large
+    if (false !== sizeLimit && buf.length > sizeLimit) return literal;
+
+    if (enc && 'utf8' == enc.first.val.toLowerCase()) {
+      encoding = encodingTypes.UTF8;
+      result = buf.toString('utf8').replace(/\s+/g, ' ')
+        .replace(/[{}\|\\\^~\[\]`"<>#%]/g, function(match) {
+          return '%' + match[0].charCodeAt(0).toString(16).toUpperCase();
+        }).trim();
+    } else {
+      result = buf.toString(encoding) + hash;
+    }
+
+    // Encode
+    return new nodes.Literal('url("data:' + mime + ';' +  encoding + ',' + result + '")');
+  };
+
+  fn.raw = true;
+  return fn;
+};
+
+// Exporting default mimes so we could easily access them
+module.exports.mimes = defaultMimes;
+