1 files changed, 89 insertions, 0 deletions
diff --git a/node_modules/uuid/lib/sha1-browser.js b/node_modules/uuid/lib/sha1-browser.js
new file mode 100644
index 0000000..5758ed7
--- /dev/null
+++ b/node_modules/uuid/lib/sha1-browser.js
@@ -0,0 +1,89 @@
+// Adapted from Chris Veness' SHA1 code at
+// http://www.movable-type.co.uk/scripts/sha1.html
+'use strict';
+
+function f(s, x, y, z) {
+  switch (s) {
+    case 0: return (x & y) ^ (~x & z);
+    case 1: return x ^ y ^ z;
+    case 2: return (x & y) ^ (x & z) ^ (y & z);
+    case 3: return x ^ y ^ z;
+  }
+}
+
+function ROTL(x, n) {
+  return (x << n) | (x>>> (32 - n));
+}
+
+function sha1(bytes) {
+  var K = [0x5a827999, 0x6ed9eba1, 0x8f1bbcdc, 0xca62c1d6];
+  var H = [0x67452301, 0xefcdab89, 0x98badcfe, 0x10325476, 0xc3d2e1f0];
+
+  if (typeof(bytes) == 'string') {
+    var msg = unescape(encodeURIComponent(bytes)); // UTF8 escape
+    bytes = new Array(msg.length);
+    for (var i = 0; i < msg.length; i++) bytes[i] = msg.charCodeAt(i);
+  }
+
+  bytes.push(0x80);
+
+  var l = bytes.length/4 + 2;
+  var N = Math.ceil(l/16);
+  var M = new Array(N);
+
+  for (var i=0; i<N; i++) {
+    M[i] = new Array(16);
+    for (var j=0; j<16; j++) {
+      M[i][j] =
+        bytes[i * 64 + j * 4] << 24 |
+        bytes[i * 64 + j * 4 + 1] << 16 |
+        bytes[i * 64 + j * 4 + 2] << 8 |
+        bytes[i * 64 + j * 4 + 3];
+    }
+  }
+
+  M[N - 1][14] = ((bytes.length - 1) * 8) /
+    Math.pow(2, 32); M[N - 1][14] = Math.floor(M[N - 1][14]);
+  M[N - 1][15] = ((bytes.length - 1) * 8) & 0xffffffff;
+
+  for (var i=0; i<N; i++) {
+    var W = new Array(80);
+
+    for (var t=0; t<16; t++) W[t] = M[i][t];
+    for (var t=16; t<80; t++) {
+      W[t] = ROTL(W[t - 3] ^ W[t - 8] ^ W[t - 14] ^ W[t - 16], 1);
+    }
+
+    var a = H[0];
+    var b = H[1];
+    var c = H[2];
+    var d = H[3];
+    var e = H[4];
+
+    for (var t=0; t<80; t++) {
+      var s = Math.floor(t/20);
+      var T = ROTL(a, 5) + f(s, b, c, d) + e + K[s] + W[t] >>> 0;
+      e = d;
+      d = c;
+      c = ROTL(b, 30) >>> 0;
+      b = a;
+      a = T;
+    }
+
+    H[0] = (H[0] + a) >>> 0;
+    H[1] = (H[1] + b) >>> 0;
+    H[2] = (H[2] + c) >>> 0;
+    H[3] = (H[3] + d) >>> 0;
+    H[4] = (H[4] + e) >>> 0;
+  }
+
+  return [
+    H[0] >> 24 & 0xff, H[0] >> 16 & 0xff, H[0] >> 8 & 0xff, H[0] & 0xff,
+    H[1] >> 24 & 0xff, H[1] >> 16 & 0xff, H[1] >> 8 & 0xff, H[1] & 0xff,
+    H[2] >> 24 & 0xff, H[2] >> 16 & 0xff, H[2] >> 8 & 0xff, H[2] & 0xff,
+    H[3] >> 24 & 0xff, H[3] >> 16 & 0xff, H[3] >> 8 & 0xff, H[3] & 0xff,
+    H[4] >> 24 & 0xff, H[4] >> 16 & 0xff, H[4] >> 8 & 0xff, H[4] & 0xff
+  ];
+}
+
+module.exports = sha1;