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authorFlorian Dold <florian.dold@gmail.com>2017-05-28 00:38:50 +0200
committerFlorian Dold <florian.dold@gmail.com>2017-05-28 00:40:43 +0200
commit7fff4499fd915bcea3fa93b1aa8b35f4fe7a6027 (patch)
tree6de9a1aebd150a23b7f8c273ec657a5d0a18fe3e /node_modules/uid2/index.js
parent963b7a41feb29cc4be090a2446bdfe0c1f1bcd81 (diff)
add linting (and some initial fixes)
Diffstat (limited to 'node_modules/uid2/index.js')
-rw-r--r--node_modules/uid2/index.js55
1 files changed, 55 insertions, 0 deletions
diff --git a/node_modules/uid2/index.js b/node_modules/uid2/index.js
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index 000000000..6240b3083
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+++ b/node_modules/uid2/index.js
@@ -0,0 +1,55 @@
+/**
+ * Module dependencies
+ */
+
+var crypto = require('crypto');
+
+/**
+ * 62 characters in the ascii range that can be used in URLs without special
+ * encoding.
+ */
+var UIDCHARS = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
+
+/**
+ * Make a Buffer into a string ready for use in URLs
+ *
+ * @param {String}
+ * @returns {String}
+ * @api private
+ */
+function tostr(bytes) {
+ var chars, r, i;
+
+ r = [];
+ for (i = 0; i < bytes.length; i++) {
+ r.push(UIDCHARS[bytes[i] % UIDCHARS.length]);
+ }
+
+ return r.join('');
+}
+
+/**
+ * Generate an Unique Id
+ *
+ * @param {Number} length The number of chars of the uid
+ * @param {Number} cb (optional) Callback for async uid generation
+ * @api public
+ */
+
+function uid(length, cb) {
+
+ if (typeof cb === 'undefined') {
+ return tostr(crypto.pseudoRandomBytes(length));
+ } else {
+ crypto.pseudoRandomBytes(length, function(err, bytes) {
+ if (err) return cb(err);
+ cb(null, tostr(bytes));
+ })
+ }
+}
+
+/**
+ * Exports
+ */
+
+module.exports = uid;