mirror of
https://github.com/less/less.js.git
synced 2026-01-22 21:58:14 -05:00
426 lines
12 KiB
JavaScript
Executable File
426 lines
12 KiB
JavaScript
Executable File
#!/usr/bin/env node
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var path = require('path'),
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fs = require('../lib/less-node/fs'),
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os = require('os'),
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mkdirp;
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var less = require('../lib/less-node'),
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pluginLoader = new less.PluginLoader(less),
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plugin,
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plugins = [];
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var args = process.argv.slice(1);
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var silent = false,
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verbose = false,
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options = {
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depends: false,
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compress: false,
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max_line_len: -1,
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lint: false,
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paths: [],
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color: true,
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strictImports: false,
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insecure: false,
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rootpath: '',
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relativeUrls: false,
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ieCompat: true,
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strictMath: false,
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strictUnits: false,
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globalVariables: '',
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modifyVariables: '',
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urlArgs: '',
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plugins: plugins
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};
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var sourceMapOptions = {};
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var continueProcessing = true,
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currentErrorcode;
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// calling process.exit does not flush stdout always
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// so use this to set the exit code
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process.on('exit', function() { process.reallyExit(currentErrorcode); });
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var checkArgFunc = function(arg, option) {
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if (!option) {
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console.log(arg + " option requires a parameter");
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continueProcessing = false;
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return false;
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}
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return true;
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};
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var checkBooleanArg = function(arg) {
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var onOff = /^((on|t|true|y|yes)|(off|f|false|n|no))$/i.exec(arg);
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if (!onOff) {
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console.log(" unable to parse "+arg+" as a boolean. use one of on/t/true/y/yes/off/f/false/n/no");
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continueProcessing = false;
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return false;
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}
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return Boolean(onOff[2]);
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};
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var parseVariableOption = function(option) {
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var parts = option.split('=', 2);
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return '@' + parts[0] + ': ' + parts[1] + ';\n';
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};
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var warningMessages = "";
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var sourceMapFileInline = false;
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function printUsage() {
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less.lesscHelper.printUsage();
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pluginLoader.printUsage(plugins);
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continueProcessing = false;
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}
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args = args.filter(function (arg) {
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var match;
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match = arg.match(/^-I(.+)$/);
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if (match) {
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options.paths.push(match[1]);
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return false;
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}
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match = arg.match(/^--?([a-z][0-9a-z-]*)(?:=(.*))?$/i);
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if (match) { arg = match[1]; }
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else { return arg; }
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switch (arg) {
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case 'v':
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case 'version':
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console.log("lessc " + less.version.join('.') + " (Less Compiler) [JavaScript]");
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continueProcessing = false;
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break;
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case 'verbose':
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verbose = true;
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break;
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case 's':
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case 'silent':
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silent = true;
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break;
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case 'l':
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case 'lint':
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options.lint = true;
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break;
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case 'strict-imports':
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options.strictImports = true;
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break;
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case 'h':
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case 'help':
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printUsage();
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break;
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case 'x':
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case 'compress':
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options.compress = true;
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break;
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case 'insecure':
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options.insecure = true;
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break;
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case 'M':
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case 'depends':
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options.depends = true;
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break;
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case 'max-line-len':
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if (checkArgFunc(arg, match[2])) {
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options.maxLineLen = parseInt(match[2], 10);
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if (options.maxLineLen <= 0) {
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options.maxLineLen = -1;
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}
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}
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break;
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case 'no-color':
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options.color = false;
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break;
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case 'no-ie-compat':
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options.ieCompat = false;
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break;
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case 'no-js':
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options.javascriptEnabled = false;
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break;
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case 'include-path':
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if (checkArgFunc(arg, match[2])) {
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options.paths = match[2].split(os.type().match(/Windows/) ? ';' : ':')
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.map(function(p) {
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if (p) {
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return path.resolve(process.cwd(), p);
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}
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});
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}
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break;
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case 'line-numbers':
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if (checkArgFunc(arg, match[2])) {
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options.dumpLineNumbers = match[2];
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}
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break;
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case 'source-map':
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options.sourceMap = true;
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if (match[2]) {
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sourceMapOptions.sourceMapFullFilename = match[2];
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}
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break;
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case 'source-map-rootpath':
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if (checkArgFunc(arg, match[2])) {
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sourceMapOptions.sourceMapRootpath = match[2];
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}
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break;
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case 'source-map-basepath':
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if (checkArgFunc(arg, match[2])) {
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sourceMapOptions.sourceMapBasepath = match[2];
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}
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break;
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case 'source-map-map-inline':
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sourceMapFileInline = true;
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options.sourceMap = true;
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break;
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case 'source-map-less-inline':
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sourceMapOptions.outputSourceFiles = true;
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break;
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case 'source-map-url':
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if (checkArgFunc(arg, match[2])) {
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sourceMapOptions.sourceMapURL = match[2];
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}
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break;
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case 'rp':
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case 'rootpath':
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if (checkArgFunc(arg, match[2])) {
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options.rootpath = match[2].replace(/\\/g, '/');
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}
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break;
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case "ru":
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case "relative-urls":
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options.relativeUrls = true;
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break;
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case "sm":
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case "strict-math":
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if (checkArgFunc(arg, match[2])) {
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options.strictMath = checkBooleanArg(match[2]);
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}
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break;
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case "su":
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case "strict-units":
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if (checkArgFunc(arg, match[2])) {
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options.strictUnits = checkBooleanArg(match[2]);
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}
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break;
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case "global-var":
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if (checkArgFunc(arg, match[2])) {
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options.globalVariables += parseVariableOption(match[2]);
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}
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break;
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case "modify-var":
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if (checkArgFunc(arg, match[2])) {
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options.modifyVariables += parseVariableOption(match[2]);
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}
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break;
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case 'url-args':
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if (checkArgFunc(arg, match[2])) {
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options.urlArgs = match[2];
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}
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break;
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case 'plugin':
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var splitupArg = match[2].match(/^([^=]+)(=(.*))?/),
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name = splitupArg[1],
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pluginOptions = splitupArg[3];
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plugin = pluginLoader.tryLoadPlugin(name, pluginOptions);
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if (plugin) {
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plugins.push(plugin);
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} else {
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console.log("Unable to load plugin " + name + " please make sure that it is installed under or at the same level as less");
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console.log();
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printUsage();
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currentErrorcode = 1;
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}
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break;
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default:
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plugin = pluginLoader.tryLoadPlugin("less-plugin-" + arg, match[2]);
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if (plugin) {
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plugins.push(plugin);
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} else {
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console.log("Unable to interpret argument " + arg + " - if it is a plugin (less-plugin-" + arg + "), make sure that it is installed under or at the same level as less");
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console.log();
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printUsage();
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currentErrorcode = 1;
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}
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break;
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}
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});
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if (!continueProcessing) {
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return;
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}
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var input = args[1];
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if (input && input != '-') {
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input = path.resolve(process.cwd(), input);
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}
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var output = args[2];
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var outputbase = args[2];
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if (output) {
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output = path.resolve(process.cwd(), output);
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if (warningMessages) {
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console.log(warningMessages);
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}
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}
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sourceMapOptions.sourceMapBasepath = options.sourceMapBasepath || (input ? path.dirname(input) : process.cwd());
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if (options.sourceMap) {
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sourceMapOptions.sourceMapInputFilename = input;
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if (!sourceMapOptions.sourceMapFullFilename) {
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if (!output && !sourceMapFileInline) {
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console.log("the sourcemap option only has an optional filename if the css filename is given");
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console.log("consider adding --source-map-map-inline which embeds the sourcemap into the css");
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return;
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}
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// its in the same directory, so always just the basename
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sourceMapOptions.sourceMapOutputFilename = path.basename(output);
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sourceMapOptions.sourceMapFullFilename = output + ".map";
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// its in the same directory, so always just the basename
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sourceMapOptions.sourceMapFilename = path.basename(sourceMapOptions.sourceMapFullFilename);
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} else if (options.sourceMap && !sourceMapFileInline) {
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var mapFilename = path.resolve(process.cwd(), sourceMapOptions.sourceMapFullFilename),
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mapDir = path.dirname(mapFilename),
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outputDir = path.dirname(output);
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// find the path from the map to the output file
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sourceMapOptions.sourceMapOutputFilename = path.join(
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path.relative(mapDir, outputDir), path.basename(output));
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// make the sourcemap filename point to the sourcemap relative to the css file output directory
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sourceMapOptions.sourceMapFilename = path.join(
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path.relative(outputDir, mapDir), path.basename(sourceMapOptions.sourceMapFullFilename));
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}
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}
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if (! input) {
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console.log("lessc: no input files");
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console.log("");
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printUsage();
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currentErrorcode = 1;
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return;
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}
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var ensureDirectory = function (filepath) {
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var dir = path.dirname(filepath),
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cmd,
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existsSync = fs.existsSync || path.existsSync;
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if (!existsSync(dir)) {
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if (mkdirp === undefined) {
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try {mkdirp = require('mkdirp');}
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catch(e) { mkdirp = null; }
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}
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cmd = mkdirp && mkdirp.sync || fs.mkdirSync;
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cmd(dir);
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}
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};
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if (options.depends) {
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if (!outputbase) {
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console.log("option --depends requires an output path to be specified");
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return;
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}
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process.stdout.write(outputbase + ": ");
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}
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if (!sourceMapFileInline) {
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var writeSourceMap = function(output) {
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var filename = sourceMapOptions.sourceMapFullFilename;
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ensureDirectory(filename);
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fs.writeFileSync(filename, output, 'utf8');
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};
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}
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var parseLessFile = function (e, data) {
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if (e) {
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console.log("lessc: " + e.message);
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currentErrorcode = 1;
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return;
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}
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data = options.globalVariables + data + '\n' + options.modifyVariables;
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options.paths = [path.dirname(input)].concat(options.paths);
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options.filename = input;
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if (options.depends) {
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var parser = new(less.Parser)(options);
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parser.parse(data, function (err, tree) {
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if (err) {
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less.writeError(err, options);
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currentErrorcode = 1;
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return;
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}
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for(var file in parser.imports.files) {
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if (parser.imports.files.hasOwnProperty(file)) {
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process.stdout.write(file + " ");
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}
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}
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console.log("");
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});
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return;
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}
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if (options.lint) {
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options.sourceMap = false;
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}
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sourceMapOptions.sourceMapRootpath = options.sourceMapRootpath || "";
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sourceMapOptions.sourceMapFileInline = sourceMapFileInline;
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if (options.sourceMap) {
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options.sourceMap = sourceMapOptions;
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}
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less.logger.addListener({
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info: function(msg) {
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if (verbose) {
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console.log(msg);
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}
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},
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warn: function(msg) {
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if (!silent) {
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console.warn(msg);
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}
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},
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error: function(msg) {
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console.log(msg);
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}
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});
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less.render(data, options)
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.then(function(result) {
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if(!options.lint) {
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if (output) {
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ensureDirectory(output);
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fs.writeFileSync(output, result.css, 'utf8');
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less.logger.info('lessc: wrote ' + output);
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} else {
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process.stdout.write(result.css);
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}
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if (options.sourceMap && !sourceMapFileInline) {
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writeSourceMap(result.map);
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}
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}
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},
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function(err) {
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less.writeError(err, options);
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currentErrorcode = 1;
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});
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};
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if (input != '-') {
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fs.readFile(input, 'utf8', parseLessFile);
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} else {
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process.stdin.resume();
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process.stdin.setEncoding('utf8');
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var buffer = '';
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process.stdin.on('data', function(data) {
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buffer += data;
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});
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process.stdin.on('end', function() {
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parseLessFile(false, buffer);
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});
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}
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