make_deflated_testdata.js
1.3 KB
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var zlib = require('../bin/node-jszlib.js');
var size = 123456;
var testData = new Uint8Array(size);
var i, il;
for (i = 0, il = size; i < il; ++i) {
testData[i] = i & 0xff;
}
var Zlib = require('zlib');
var deflated = zlib.deflateSync(testData);
var USE_TYPEDARRAY = typeof Uint8Array === 'function';
function decodeB64(b64buf) {
var decoded =
new (USE_TYPEDARRAY ? Uint8Array : Array)(b64buf.length * 3 / 4 | 0);
var tmp;
var pos = 0;
var i, il;
var table = decodeB64.DecodeTable;
for (i = 0, il = b64buf.length; i < il; i += 4, pos += 3) {
tmp = (table[b64buf.charCodeAt(i) ] << 18) |
(table[b64buf.charCodeAt(i+1)] << 12) |
(table[b64buf.charCodeAt(i+2)] << 6) |
(table[b64buf.charCodeAt(i+3)]);
decoded[pos] = tmp >>> 16;
decoded[pos+1] = tmp >>> 8 & 0xff;
decoded[pos+2] = tmp & 0xff;
}
return decoded;
}
decodeB64.DecodeTable = (function(chars){
var table = new (USE_TYPEDARRAY ? Uint8Array : Array)(256);
for (var i = 0, il = chars.length; i < il; ++i) {
table[chars.charCodeAt(i)] = i;
}
return table;
})('ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/');
console.log(deflated.toString("base64").length);
console.log(decodeB64(deflated.toString('base64')).length);