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Commit Description:
temporary for logo voting
Commit Description:
temporary for logo voting
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node_modules/pako/lib/utils/common.js
| 102 lines
| 2.3 KiB
| application/javascript
| JavascriptLexer
|
| r789 | 'use strict'; | |||
| var TYPED_OK = (typeof Uint8Array !== 'undefined') && | ||||
| (typeof Uint16Array !== 'undefined') && | ||||
| (typeof Int32Array !== 'undefined'); | ||||
| exports.assign = function (obj /*from1, from2, from3, ...*/) { | ||||
| var sources = Array.prototype.slice.call(arguments, 1); | ||||
| while (sources.length) { | ||||
| var source = sources.shift(); | ||||
| if (!source) { continue; } | ||||
| if (typeof source !== 'object') { | ||||
| throw new TypeError(source + 'must be non-object'); | ||||
| } | ||||
| for (var p in source) { | ||||
| if (source.hasOwnProperty(p)) { | ||||
| obj[p] = source[p]; | ||||
| } | ||||
| } | ||||
| } | ||||
| return obj; | ||||
| }; | ||||
| // reduce buffer size, avoiding mem copy | ||||
| exports.shrinkBuf = function (buf, size) { | ||||
| if (buf.length === size) { return buf; } | ||||
| if (buf.subarray) { return buf.subarray(0, size); } | ||||
| buf.length = size; | ||||
| return buf; | ||||
| }; | ||||
| var fnTyped = { | ||||
| arraySet: function (dest, src, src_offs, len, dest_offs) { | ||||
| if (src.subarray && dest.subarray) { | ||||
| dest.set(src.subarray(src_offs, src_offs + len), dest_offs); | ||||
| return; | ||||
| } | ||||
| // Fallback to ordinary array | ||||
| for (var i = 0; i < len; i++) { | ||||
| dest[dest_offs + i] = src[src_offs + i]; | ||||
| } | ||||
| }, | ||||
| // Join array of chunks to single array. | ||||
| flattenChunks: function (chunks) { | ||||
| var i, l, len, pos, chunk, result; | ||||
| // calculate data length | ||||
| len = 0; | ||||
| for (i = 0, l = chunks.length; i < l; i++) { | ||||
| len += chunks[i].length; | ||||
| } | ||||
| // join chunks | ||||
| result = new Uint8Array(len); | ||||
| pos = 0; | ||||
| for (i = 0, l = chunks.length; i < l; i++) { | ||||
| chunk = chunks[i]; | ||||
| result.set(chunk, pos); | ||||
| pos += chunk.length; | ||||
| } | ||||
| return result; | ||||
| } | ||||
| }; | ||||
| var fnUntyped = { | ||||
| arraySet: function (dest, src, src_offs, len, dest_offs) { | ||||
| for (var i = 0; i < len; i++) { | ||||
| dest[dest_offs + i] = src[src_offs + i]; | ||||
| } | ||||
| }, | ||||
| // Join array of chunks to single array. | ||||
| flattenChunks: function (chunks) { | ||||
| return [].concat.apply([], chunks); | ||||
| } | ||||
| }; | ||||
| // Enable/Disable typed arrays use, for testing | ||||
| // | ||||
| exports.setTyped = function (on) { | ||||
| if (on) { | ||||
| exports.Buf8 = Uint8Array; | ||||
| exports.Buf16 = Uint16Array; | ||||
| exports.Buf32 = Int32Array; | ||||
| exports.assign(exports, fnTyped); | ||||
| } else { | ||||
| exports.Buf8 = Array; | ||||
| exports.Buf16 = Array; | ||||
| exports.Buf32 = Array; | ||||
| exports.assign(exports, fnUntyped); | ||||
| } | ||||
| }; | ||||
| exports.setTyped(TYPED_OK); | ||||