diff options
| author | Jeremy White <jwhite@codeweavers.com> | 2013-04-16 14:59:08 -0500 |
|---|---|---|
| committer | Jeremy White <jwhite@codeweavers.com> | 2013-04-16 14:59:08 -0500 |
| commit | 78e0d938cf9a1cef400a57ca3d727b9772dd4a1a (patch) | |
| tree | 5f850739860274c7ac5017ef167ebb9cb7a2516b | |
| parent | ec9ae0cbd6d5ebbcea746b4b771ac87835ff8920 (diff) | |
Extend the native ArrayBuffer to add a slice() method if missing.
This allows IE10 to function. Note that we would normally subclass
this type, but ArrayBuffer is implemented in native code, and so is
difficult to subclass.
| -rw-r--r-- | spice.html | 1 | ||||
| -rw-r--r-- | spicearraybuffer.js | 58 |
2 files changed, 59 insertions, 0 deletions
@@ -28,6 +28,7 @@ <head> <title>Spice Javascript client</title> + <script src="spicearraybuffer.js"></script> <script src="enums.js"></script> <script src="atKeynames.js"></script> <script src="utils.js"></script> diff --git a/spicearraybuffer.js b/spicearraybuffer.js new file mode 100644 index 0000000..228bce6 --- /dev/null +++ b/spicearraybuffer.js @@ -0,0 +1,58 @@ +"use strict"; +/* + Copyright (C) 2012 by Jeremy P. White <jwhite@codeweavers.com> + + This file is part of spice-html5. + + spice-html5 is free software: you can redistribute it and/or modify + it under the terms of the GNU Lesser General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + spice-html5 is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with spice-html5. If not, see <http://www.gnu.org/licenses/>. +*/ + +/*---------------------------------------------------------------------------- +** SpiceArrayBufferSlice +** This function is a work around for IE 10, which has no slice() +** method in it's subclass. +**--------------------------------------------------------------------------*/ +function SpiceArrayBufferSlice(start, end) +{ + start = start || 0; + end = end || this.byteLength; + if (end < 0) + end = this.byteLength + end; + if (start < 0) + start = this.byteLength + start; + if (start < 0) + start = 0; + if (end < 0) + end = 0; + if (end > this.byteLength) + end = this.byteLength; + if (start > end) + start = end; + + var ret = new ArrayBuffer(end - start); + var in1 = new Uint8Array(this, start, end - start); + var out = new Uint8Array(ret); + var i; + + for (i = 0; i < end - start; i++) + out[i] = in1[i]; + + return ret; +} + +if (! ArrayBuffer.prototype.slice) +{ + ArrayBuffer.prototype.slice = SpiceArrayBufferSlice; + console.log("WARNING: ArrayBuffer.slice() is missing; we are extending ArrayBuffer to compensate"); +} |