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85 lines
1.8 KiB
JavaScript
85 lines
1.8 KiB
JavaScript
#!/usr/bin/env node
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'use strict';
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var program = require('commander');
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var lzma = require('../');
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var fs = require('fs');
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var path = require('path');
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var argv = process.argv.slice(2);
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var positionalArgs = [];
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var level = undefined;
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var threads = undefined;
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var compress = true;
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for (var i = 0; i < argv.length; ++i) {
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if (argv[i][0] !== '-') {
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positionalArgs.push(argv[i]);
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continue;
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}
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if (!isNaN(+argv[i][1])) {
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level = +argv[i][1];
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continue;
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}
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switch (argv[i]) {
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case '-d':
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case '--decompress':
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compress = false;
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break;
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case '-z':
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case '--compress':
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compress = true;
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break;
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case '-t':
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case '--threads':
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if (!isNaN(+argv[i+1]))
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threads = +argv[++i];
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else
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threads = 0;
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break;
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default:
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case '-h':
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case '--help':
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usage();
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return;
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}
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}
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function usage() {
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process.stdout.write('Usage: \n' +
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' ' + path.basename(process.argv[1]) +
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' [-d|-z] [-t num] [-1|...|-9] [infile] [outfile]\n' +
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'\n' +
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' -d, --decompress Decompress infile to outfile\n' +
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' -z, --compress Compress infile to outfile\n' +
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' -t n, --threads n Use n threads for compressing\n' +
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' -1, ..., -9 Specifiy compression level\n' +
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' -h, --help Display this text\n' +
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'\n' +
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' <infile> defaults to stdin and <outfile> defaults to stdout.\n');
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return;
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}
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var input = process.stdin, output = process.stdout;
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if (positionalArgs.length > 0) {
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input = fs.createReadStream(positionalArgs.shift());
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}
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if (positionalArgs.length > 0) {
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output = fs.createWriteStream(positionalArgs.shift());
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}
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var opts = {
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preset: level || lzma.PRESET_DEFAULT,
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threads: threads,
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};
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var encoder = lzma.createStream(compress ? 'easyEncoder' : 'autoDecoder', opts);
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input.pipe(encoder).pipe(output);
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