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60 lines
1.7 KiB
JavaScript
60 lines
1.7 KiB
JavaScript
#!/usr/bin/env node
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let defaults =
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{input: 'input.br', output: 'output.txt', test_iters: 0, test_repeat: 100};
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/* Parse command line arguments. */
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let argv =
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require('yargs')
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.usage('Usage: $0 -i file -o file')
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.option(
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'input',
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{alias: 'i', default: defaults.input, describe: 'compressed file'})
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.option('output', {
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alias: 'o',
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default: defaults.output,
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describe: 'decompressed file'
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})
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.option('test_iters', {
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default: defaults.test_iters,
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describe: '# of times to run performance test'
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})
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.option('test_repeat', {
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default: defaults.test_repeat,
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describe: '# of times to decompress file in performance test'
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})
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.argv;
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/* Read input. */
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const fs = require('fs');
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data = fs.readFileSync(argv.input);
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if (!Buffer.isBuffer(data)) throw 'not a buffer';
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const bytes = new Uint8Array(data);
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/* Load and map brotli decoder module. */
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global.window = {};
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require('./decode.js')
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const brotliDecode = window['BrotliDecode'];
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/* Load "performance" module. */
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const {PerformanceObserver, performance} = require('perf_hooks');
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/* Performance test. */
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for (let i = 0; i < argv.test_iters; ++i) {
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const a = performance.now();
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let result;
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for (let j = 0; j < argv.test_repeat; ++j) {
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result = brotliDecode(bytes);
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}
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const b = performance.now();
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const total_length = argv.test_repeat * result.length / (1024 * 1024);
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const total_time = (b - a) / 1000;
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console.log(
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total_length + 'MB / ' + total_time +
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's = ' + (total_length / total_time) + 'MB/s');
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}
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/* Decode and write output file. */
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fs.writeFileSync(argv.output, new Buffer(brotliDecode(bytes)));
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