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authornanalelfe <nargiza.nosirova@mail.utoronto.ca>2016-07-18 10:54:08 +0000
committernanalelfe <nargiza.nosirova@mail.utoronto.ca>2016-07-18 10:54:08 +0000
commita35da9f9ccc1124d9b6f4461c7216ffbb0285e2f (patch)
treed5b4b8548caae36a20e1258a8341dab4b3d522d2 /node_modules/encodeurl/index.js
parent16bbc66ebafc6f1a55e47dbda3f3c0f658fe715c (diff)
parentc1ce89359a7b54ec97b54ce577e5534c180c5c4b (diff)
merged
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+/*!
+ * encodeurl
+ * Copyright(c) 2016 Douglas Christopher Wilson
+ * MIT Licensed
+ */
+
+'use strict'
+
+/**
+ * Module exports.
+ * @public
+ */
+
+module.exports = encodeUrl
+
+/**
+ * RegExp to match non-URL code points, *after* encoding (i.e. not including "%")
+ * and including invalid escape sequences.
+ * @private
+ */
+
+var ENCODE_CHARS_REGEXP = /(?:[^\x21\x25\x26-\x3B\x3D\x3F-\x5B\x5D\x5F\x61-\x7A\x7E]|%(?:[^0-9A-Fa-f]|[0-9A-Fa-f][^0-9A-Fa-f]))+/g
+
+/**
+ * RegExp to match unmatched surrogate pair.
+ * @private
+ */
+
+var UNMATCHED_SURROGATE_PAIR_REGEXP = /(^|[^\uD800-\uDBFF])[\uDC00-\uDFFF]|[\uD800-\uDBFF]([^\uDC00-\uDFFF]|$)/g
+
+/**
+ * String to replace unmatched surrogate pair with.
+ * @private
+ */
+
+var UNMATCHED_SURROGATE_PAIR_REPLACE = '$1\uFFFD$2'
+
+/**
+ * Encode a URL to a percent-encoded form, excluding already-encoded sequences.
+ *
+ * This function will take an already-encoded URL and encode all the non-URL
+ * code points. This function will not encode the "%" character unless it is
+ * not part of a valid sequence (`%20` will be left as-is, but `%foo` will
+ * be encoded as `%25foo`).
+ *
+ * This encode is meant to be "safe" and does not throw errors. It will try as
+ * hard as it can to properly encode the given URL, including replacing any raw,
+ * unpaired surrogate pairs with the Unicode replacement character prior to
+ * encoding.
+ *
+ * @param {string} url
+ * @return {string}
+ * @public
+ */
+
+function encodeUrl (url) {
+ return String(url)
+ .replace(UNMATCHED_SURROGATE_PAIR_REGEXP, UNMATCHED_SURROGATE_PAIR_REPLACE)
+ .replace(ENCODE_CHARS_REGEXP, encodeURI)
+}