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- #!/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, [source-file, ...]')
- .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('--skip-advanced', 'Disable advanced optimizations - selector & property merging, reduction, etc.')
- .option('--skip-aggressive-merging', 'Disable properties merging based on their order')
- .option('--rounding-precision [value]', 'Rounding precision, defaults to 2', parseInt)
- .option('-c, --compatibility [ie7|ie8]', 'Force compatibility mode')
- .option('-t, --timeout [seconds]', 'Per connection timeout when fetching remote @imports (defaults to 5 seconds)')
- .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 = {
- sources: 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.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.skipAdvanced)
- cleanOptions.noAdvanced = true;
- if (commands.skipAggressiveMerging)
- cleanOptions.noAggressiveMerging = true;
- if (commands.compatibility)
- cleanOptions.compatibility = commands.compatibility;
- if (commands.roundingPrecision !== undefined)
- cleanOptions.roundingPrecision = commands.roundingPrecision;
- if (commands.debug)
- cleanOptions.debug = true;
- if (commands.timeout)
- cleanOptions.inliner = { timeout: parseFloat(commands.timeout) * 1000 };
- if (commands.args.length > 0) {
- var relativeTo = (cleanOptions.noRebase ? false : cleanOptions.root) || commands.args[0];
- cleanOptions.relativeTo = path.dirname(path.resolve(relativeTo));
- options.sources = commands.args.map(function(source) {
- var isRemote = /^https?:\/\//.test(source);
- if (cleanOptions.processImport === false)
- source += '@shallow';
- return isRemote ?
- source :
- path.relative(cleanOptions.relativeTo, path.resolve(source));
- });
- }
- // ... and do the magic!
- if (options.sources) {
- var data = options.sources
- .map(function(source) {
- return '@import url(' + source + ');';
- })
- .join('');
- minify(data);
- } else {
- var stdin = process.openStdin();
- stdin.setEncoding('utf-8');
- var data = '';
- stdin.on('data', function(chunk) {
- data += chunk;
- });
- stdin.on('end', function() {
- minify(data);
- });
- }
- function minify(data) {
- new CleanCSS(cleanOptions).minify(data, function(errors, minified) {
- if (cleanOptions.debug) {
- console.error('Original: %d bytes', this.stats.originalSize);
- console.error('Minified: %d bytes', this.stats.minifiedSize);
- console.error('Efficiency: %d%', ~~(this.stats.efficiency * 10000) / 100.0);
- console.error('Time spent: %dms', this.stats.timeSpent);
- }
- outputFeedback(this.errors, true);
- outputFeedback(this.warnings);
- if (this.errors.length > 0)
- process.exit(1);
- output(minified);
- });
- }
- function output(minified) {
- if (options.target)
- fs.writeFileSync(options.target, minified, 'utf8');
- else
- process.stdout.write(minified);
- }
- function outputFeedback(messages, isError) {
- var prefix = isError ? '\x1B[31mERROR\x1B[39m:' : 'WARNING:';
- messages.forEach(function(message) {
- console.error('%s %s', prefix, message);
- });
- }
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