[Pkg-javascript-commits] [pdf.js] 06/207: Fixes murmurhash for old webkit.

[David Prévot]

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taffit pushed a commit to branch master
in repository pdf.js.

commit a09aecb24a390609924b176101a83ac9a07726b5
Author: Yury Delendik <ydelendik at mozilla.com>
Date:   Thu May 29 21:16:32 2014 -0500

    Fixes murmurhash for old webkit.
---
 src/core/murmurhash3.js | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/src/core/murmurhash3.js b/src/core/murmurhash3.js
index aa7421f..6346cab 100644
--- a/src/core/murmurhash3.js
+++ b/src/core/murmurhash3.js
@@ -34,9 +34,19 @@ var MurmurHash3_64 = (function MurmurHash3_64Closure (seed) {
     this.h2 = seed ? seed & 0xffffffff : SEED;
   }
 
+  var alwaysUseUint32ArrayView = false;
+//#if !(FIREFOX || MOZCENTRAL || B2G || CHROME)
+  // old webkits have issues with non-aligned arrays
+  try {
+    new Uint32Array(new Uint8Array(5).buffer, 0, 1);
+  } catch (e) {
+    alwaysUseUint32ArrayView = true;
+  }
+//#endif
+
   MurmurHash3_64.prototype = {
     update: function MurmurHash3_64_update(input) {
-      var useUint32ArrayView = false;
+      var useUint32ArrayView = alwaysUseUint32ArrayView;
       var i;
       if (typeof input == 'string') {
         var data = new Uint8Array(input.length * 2);

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