#!/usr/bin/env node var util = require('util'); var fs = require('fs'); var path = require('path'); var CleanCSS = require('../index'); var commands = require('commander'); var packageConfig = fs.readFileSync(path.join(path.dirname(fs.realpathSync(process.argv[1])), '../package.json')); var buildVersion = JSON.parse(packageConfig).version; var isWindows = process.platform == 'win32'; // Specify commander options to parse command line params correctly commands .version(buildVersion, '-v, --version') .usage('[options] <source-file>') .option('-e, --remove-empty', 'Remove empty declarations, e.g. .a{}') .option('-b, --keep-line-breaks', 'Keep line breaks') .option('--s0', 'Remove all special comments, i.e. /*! comment */') .option('--s1', 'Remove all special comments but the first one') .option('-r, --root [root-path]', 'Set a root path to which resolve absolute @import rules') .option('-o, --output [output-file]', 'Use [output-file] as output instead of STDOUT') .option('-s, --skip-import', 'Disable @import processing') .option('--skip-rebase', 'Disable URLs rebasing') .option('-d, --debug', 'Shows debug information (minification time & compression efficiency)'); commands.on('--help', function() { util.puts(' Examples:\n'); util.puts(' %> cleancss one.css'); util.puts(' %> cleancss -o one-min.css one.css'); if (isWindows) { util.puts(' %> type one.css two.css three.css | cleancss -o merged-and-minified.css'); } else { util.puts(' %> cat one.css two.css three.css | cleancss -o merged-and-minified.css'); util.puts(' %> cat one.css two.css three.css | cleancss | gzip -9 -c > merged-minified-and-gzipped.css.gz'); } util.puts(''); process.exit(); }); commands.parse(process.argv); var options = { source: null, target: null }; var cleanOptions = {}; var fromStdin = !process.env['__DIRECT__'] && !process.stdin.isTTY; // If no sensible data passed in just print help and exit if (!fromStdin && commands.args.length == 0) { commands.outputHelp(); return 0; } // Now coerce commands into CleanCSS configuration... if (commands.output) cleanOptions.target = options.target = commands.output; if (commands.removeEmpty) cleanOptions.removeEmpty = true; if (commands.keepLineBreaks) cleanOptions.keepBreaks = true; if (commands.s1) cleanOptions.keepSpecialComments = 1; if (commands.s0) cleanOptions.keepSpecialComments = 0; if (commands.root) cleanOptions.root = commands.root; if (commands.skipImport) cleanOptions.processImport = false; if (commands.skipRebase) cleanOptions.noRebase = true; if (commands.debug) options.debug = true; if (commands.args.length > 0) { var source = commands.args[0]; options.source = source; cleanOptions.relativeTo = path.dirname(path.resolve(source)); } // ... and do the magic! if (options.source) { fs.readFile(options.source, 'utf8', function(error, data) { if (error) throw error; output(minify(data)); }); } else { var stdin = process.openStdin(); stdin.setEncoding('utf-8'); var data = ''; stdin.on('data', function(chunk) { data += chunk; }); stdin.on('end', function() { output(minify(data)); }); } function minify(data) { var minified; if (options.debug) { var start = process.hrtime(); minified = CleanCSS.process(data, cleanOptions); var taken = process.hrtime(start); console.error('Minification time: %dms', ~~(taken[0] * 1e3 + taken[1] / 1e6)); console.error('Compression efficiency: %d%', ~~((1 - minified.length / CleanCSS.originalSize) * 100)); } else { minified = CleanCSS.process(data, cleanOptions); } return minified; } function output(minified) { if (options.target) fs.writeFileSync(options.target, minified, 'utf8'); else process.stdout.write(minified); };