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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,171 @@ | ||
| import Benchmark from 'benchmark'; | ||
| import { encode, decode } from '../../../src/Base64'; | ||
| function getSuite() { | ||
| return new Benchmark.Suite() | ||
| .on('cycle', function(event: any) { | ||
| console.log(event.target.toString()); | ||
| }) | ||
| .on('complete', function(this: any) { | ||
| console.log(`字节长度 ${Max} :`); | ||
| console.table( | ||
| Array.from(this).map(v => { | ||
| // @ts-ignore | ||
| v.hzk = (v.hz / 1000).toFixed(2) + 'K'; | ||
| return v; | ||
| }), | ||
| ['name', 'hzk'] | ||
| ); | ||
| }); | ||
| } | ||
|
|
||
| const TABLE = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'.split(''); | ||
| const TABLE_JOIN = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'; | ||
| const PAD = '='; | ||
| const Max = 64; | ||
| const Data: number[] = []; | ||
| const Data1: number[] = []; | ||
| const Data2: number[] = []; | ||
| for (let i = 0; i < Max; i++) { | ||
| Data.push((Math.random() * 256) >> 0); | ||
| } | ||
| for (let i = 0; i < Max + 1; i++) { | ||
| Data1.push((Math.random() * 256) >> 0); | ||
| } | ||
| for (let i = 0; i < Max + 2; i++) { | ||
| Data2.push((Math.random() * 256) >> 0); | ||
| } | ||
| const DataB64 = encode(Data); | ||
| const DataB64_1 = encode(Data1); | ||
| const DataB64_2 = encode(Data2); | ||
|
|
||
| const getV = function(char: string): number { | ||
| let index = TABLE_JOIN.indexOf(char); | ||
| if (index == -1) throw new TypeError(`"${char}" not base64 char`); | ||
| return index; | ||
| }; | ||
| const getPads = function(base64Str: string): number { | ||
| let index = base64Str.length; | ||
| let pads = 0; | ||
| while (index-- > 0 && base64Str.charAt(index) === PAD) { | ||
| pads++; | ||
| } | ||
| return pads; | ||
| }; | ||
| function B64DecodeV0_2_3(base64Str: string): Uint8Array | number[] { | ||
| // base64Str = base64Str.trim(); | ||
| let length = base64Str.length; | ||
| let indexMax = length - getPads(base64Str); | ||
| let mc4 = indexMax % 4; | ||
| if (mc4 === 1) throw new TypeError('The parameter is not a base64 string!'); | ||
| let buffer = new Uint8Array(Math.floor((indexMax * 6) / 8)); | ||
| let index = 0; | ||
| let i = 0; | ||
| const next = function() { | ||
| return getV(base64Str.charAt(i++)); | ||
| }; | ||
| for (let loopLength = indexMax - mc4; i < loopLength; ) { | ||
| let [c0, c1, c2, c3] = [next(), next(), next(), next()]; | ||
| buffer[index++] = ((c0 << 2) | (c1 >> 4)) & 0xff; | ||
| buffer[index++] = ((c1 << 4) | (c2 >> 2)) & 0xff; | ||
| buffer[index++] = ((c2 << 6) | c3) & 0xff; | ||
| } | ||
| if (mc4) { | ||
| let c1; | ||
| buffer[index++] = ((next() << 2) | ((c1 = next()) >> 4)) & 0xff; | ||
| if (mc4 === 3) { | ||
| buffer[index++] = ((c1 << 4) | (next() >> 2)) & 0xff; | ||
| } | ||
| } | ||
| // 复写toString以UTF8编码输出; | ||
| // toString && (buffer.toString = toString); | ||
| return buffer; | ||
| } | ||
|
|
||
| const getV1 = function(char: string): number { | ||
| if (char === PAD) return -2; | ||
| return TABLE_JOIN.indexOf(char); | ||
| }; | ||
|
|
||
| function B64Decode(base64Str: string) { | ||
| let index = 0; | ||
| let i = 0; | ||
| let sLength = base64Str.length; | ||
| let buffer = []; | ||
| while (index < sLength) { | ||
| let c0 = TABLE_JOIN.indexOf(base64Str.charAt(index++)); | ||
| let c1 = TABLE_JOIN.indexOf(base64Str.charAt(index++)); | ||
| let c2 = TABLE_JOIN.indexOf(base64Str.charAt(index++)); | ||
| let c3 = TABLE_JOIN.indexOf(base64Str.charAt(index++)); | ||
| buffer[i++] = ((c0 << 2) | (c1 >> 4)) & 0xff; | ||
| if (c2 == -1) break; | ||
| buffer[i++] = ((c1 << 4) | (c2 >> 2)) & 0xff; | ||
| if (c3 == -1) break; | ||
| buffer[i++] = ((c2 << 6) | c3) & 0xff; | ||
| } | ||
| return buffer; | ||
| } | ||
|
|
||
| function B64Decode1(base64Str: string): Uint8Array | number[] { | ||
| // base64Str = base64Str.trim(); | ||
| let length = base64Str.length; | ||
| let indexMax = length - getPads(base64Str); | ||
| let mc4 = indexMax % 4; | ||
| if (mc4 === 1) throw new TypeError('The parameter is not a base64 string!'); | ||
| let buffer = new Uint8Array(Math.floor((indexMax * 6) / 8)); | ||
| let index = 0; | ||
| let i = 0; | ||
| let next = function() { | ||
| let char = base64Str.charAt(i++) | ||
| let index = TABLE_JOIN.indexOf(char); | ||
| if (index == -1) throw new TypeError(`"${char}" not base64 char`); | ||
| return index; | ||
| }; | ||
| for (let loopLength = indexMax - mc4; i < loopLength; ) { | ||
| let [c0, c1, c2, c3] = [next(), next(), next(), next()]; | ||
| buffer[index++] = (c0 << 2) | (c1 >> 4); | ||
| buffer[index++] = ((c1 << 4) | (c2 >> 2)) & 0xff; | ||
| buffer[index++] = ((c2 << 6) | c3) & 0xff; | ||
| } | ||
| if (mc4) { | ||
| let c1; | ||
| buffer[index++] = ((next() << 2) | ((c1 = next()) >> 4)) & 0xff; | ||
| if (mc4 === 3) { | ||
| buffer[index++] = ((c1 << 4) | (next() >> 2)) & 0xff; | ||
| } | ||
| } | ||
| // 复写toString以UTF8编码输出; | ||
| // toString && (buffer.toString = toString); | ||
| return buffer; | ||
| } | ||
|
|
||
|
|
||
| function test(fn: any) { | ||
| return ( | ||
| Data.join(',') == fn(DataB64) && Data1.join(',') == fn(DataB64_1) && Data2.join(',') == fn(DataB64_2) | ||
| ); | ||
| } | ||
|
|
||
| console.log('B64DecodeV0_2_3', test(B64DecodeV0_2_3)); | ||
| console.log('B64Decode', test(B64Decode)); | ||
| console.log('B64Decode1', test(B64Decode1)); | ||
| // console.log(Data,B64Decode(DataB64)); | ||
|
|
||
| DataB64; | ||
|
|
||
| getSuite() | ||
| .add('B64DecodeV0_2_3', function() { | ||
| var a1 = B64DecodeV0_2_3(DataB64); | ||
| var a2 = B64DecodeV0_2_3(DataB64_1); | ||
| var a3 = B64DecodeV0_2_3(DataB64_2); | ||
| }) | ||
| .add('B64Decode', function() { | ||
| var a1 = B64Decode(DataB64); | ||
| var a2 = B64Decode(DataB64_1); | ||
| var a3 = B64Decode(DataB64_2); | ||
| }) | ||
| .add('B64Decode1', function() { | ||
| var a1 = B64Decode1(DataB64); | ||
| var a2 = B64Decode1(DataB64_1); | ||
| var a3 = B64Decode1(DataB64_2); | ||
| }) | ||
| .run(); |
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