247 lines
9.3 KiB
JavaScript
247 lines
9.3 KiB
JavaScript
(function(){
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var BANNER, CoffeeScript, SWITCHES, _a, compileOptions, compileScript, compileScripts, compileStdio, exec, fs, lint, optionParser, options, optparse, parseOptions, path, printTokens, sources, spawn, usage, version, watch, writeJs;
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// The `coffee` utility. Handles command-line compilation of CoffeeScript
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// into various forms: saved into `.js` files or printed to stdout, piped to
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// [JSLint](http://javascriptlint.com/) or recompiled every time the source is
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// saved, printed as a token stream or as the syntax tree, or launch an
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// interactive REPL.
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// External dependencies.
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fs = require('fs');
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path = require('path');
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optparse = require('./optparse');
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CoffeeScript = require('./coffee-script');
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_a = require('child_process');
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spawn = _a.spawn;
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exec = _a.exec;
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// The help banner that is printed when `coffee` is called without arguments.
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BANNER = 'coffee compiles CoffeeScript source files into JavaScript.\n\nUsage:\n coffee path/to/script.coffee';
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// The list of all the valid option flags that `coffee` knows how to handle.
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SWITCHES = [['-c', '--compile', 'compile to JavaScript and save as .js files'], ['-i', '--interactive', 'run an interactive CoffeeScript REPL'], ['-o', '--output [DIR]', 'set the directory for compiled JavaScript'], ['-w', '--watch', 'watch scripts for changes, and recompile'], ['-p', '--print', 'print the compiled JavaScript to stdout'], ['-l', '--lint', 'pipe the compiled JavaScript through JSLint'], ['-s', '--stdio', 'listen for and compile scripts over stdio'], ['-e', '--eval', 'compile a string from the command line'], ['--no-wrap', 'compile without the top-level function wrapper'], ['-t', '--tokens', 'print the tokens that the lexer produces'], ['-n', '--nodes', 'print the parse tree that Jison produces'], ['-v', '--version', 'display CoffeeScript version'], ['-h', '--help', 'display this help message']];
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// Top-level objects shared by all the functions.
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options = {};
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sources = [];
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optionParser = null;
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// Run `coffee` by parsing passed options and determining what action to take.
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// Many flags cause us to divert before compiling anything. Flags passed after
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// `--` will be passed verbatim to your script as arguments in `process.argv`
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exports.run = function() {
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var flags, separator;
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parseOptions();
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if (options.help) {
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return usage();
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}
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if (options.version) {
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return version();
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}
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if (options.interactive) {
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return require('./repl');
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}
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if (options.stdio) {
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return compileStdio();
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}
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if (options.eval) {
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return compileScript('console', sources[0]);
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}
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if (!(sources.length)) {
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return require('./repl');
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}
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separator = sources.indexOf('--');
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flags = [];
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if (separator >= 0) {
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flags = sources.slice((separator + 1), sources.length);
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sources = sources.slice(0, separator);
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}
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process.ARGV = (process.argv = flags);
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return compileScripts();
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};
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// Asynchronously read in each CoffeeScript in a list of source files and
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// compile them. If a directory is passed, recursively compile all
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// '.coffee' extension source files in it and all subdirectories.
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compileScripts = function() {
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var _b, _c, _d, _e, base, compile, source;
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_b = []; _d = sources;
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for (_c = 0, _e = _d.length; _c < _e; _c++) {
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source = _d[_c];
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_b.push((function() {
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base = source;
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compile = function(source, topLevel) {
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return path.exists(source, function(exists) {
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if (!(exists)) {
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throw new Error(("File not found: " + source));
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}
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return fs.stat(source, function(err, stats) {
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if (stats.isDirectory()) {
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return fs.readdir(source, function(err, files) {
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var _f, _g, _h, _i, file;
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_f = []; _h = files;
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for (_g = 0, _i = _h.length; _g < _i; _g++) {
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file = _h[_g];
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_f.push(compile(path.join(source, file)));
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}
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return _f;
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});
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} else if (topLevel || path.extname(source) === '.coffee') {
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fs.readFile(source, function(err, code) {
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return compileScript(source, code.toString(), base);
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});
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if (options.watch) {
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return watch(source, base);
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}
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}
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});
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});
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};
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return compile(source, true);
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})());
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}
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return _b;
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};
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// Compile a single source script, containing the given code, according to the
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// requested options. If evaluating the script directly sets `__filename`,
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// `__dirname` and `module.filename` to be correct relative to the script's path.
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compileScript = function(source, code, base) {
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var codeOpts, js, o;
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o = options;
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codeOpts = compileOptions(source);
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try {
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if (o.tokens) {
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return printTokens(CoffeeScript.tokens(code));
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} else if (o.nodes) {
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return puts(CoffeeScript.nodes(code).toString());
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} else if (o.run) {
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return CoffeeScript.run(code, codeOpts);
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} else {
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js = CoffeeScript.compile(code, codeOpts);
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if (o.print) {
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return print(js);
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} else if (o.compile) {
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return writeJs(source, js, base);
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} else if (o.lint) {
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return lint(js);
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}
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}
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} catch (err) {
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if (!(o.watch)) {
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error(err.stack) && process.exit(1);
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}
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return puts(err.message);
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}
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};
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// Attach the appropriate listeners to compile scripts incoming over **stdin**,
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// and write them back to **stdout**.
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compileStdio = function() {
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var code, stdin;
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code = '';
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stdin = process.openStdin();
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stdin.addListener('data', function(buffer) {
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if (buffer) {
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return code += buffer.toString();
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}
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});
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return stdin.addListener('end', function() {
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return compileScript('stdio', code);
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});
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};
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// Watch a source CoffeeScript file using `fs.watchFile`, recompiling it every
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// time the file is updated. May be used in combination with other options,
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// such as `--lint` or `--print`.
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watch = function(source, base) {
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return fs.watchFile(source, {
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persistent: true,
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interval: 500
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}, function(curr, prev) {
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if (curr.mtime.getTime() === prev.mtime.getTime()) {
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return null;
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}
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if (options.compile) {
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puts(("Compiled " + source));
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}
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return fs.readFile(source, function(err, code) {
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return compileScript(source, code.toString(), base);
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});
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});
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};
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// Write out a JavaScript source file with the compiled code. By default, files
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// are written out in `cwd` as `.js` files with the same name, but the output
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// directory can be customized with `--output`.
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writeJs = function(source, js, base) {
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var baseDir, compile, dir, filename, jsPath, srcDir;
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filename = path.basename(source, path.extname(source)) + '.js';
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srcDir = path.dirname(source);
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baseDir = srcDir.substring(base.length);
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dir = options.output ? path.join(options.output, baseDir) : srcDir;
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jsPath = path.join(dir, filename);
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compile = function() {
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return fs.writeFile(jsPath, js);
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};
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return path.exists(dir, function(exists) {
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if (exists) {
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return compile();
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} else {
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return exec(("mkdir -p " + dir), compile);
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}
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});
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};
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// Pipe compiled JS through JSLint (requires a working `jsl` command), printing
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// any errors or warnings that arise.
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lint = function(js) {
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var jsl, printIt;
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printIt = function(buffer) {
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return print(buffer.toString());
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};
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jsl = spawn('jsl', ['-nologo', '-stdin']);
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jsl.stdout.addListener('data', printIt);
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jsl.stderr.addListener('data', printIt);
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jsl.stdin.write(js);
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return jsl.stdin.end();
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};
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// Pretty-print a stream of tokens.
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printTokens = function(tokens) {
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var _b, _c, _d, _e, _f, strings, tag, token, value;
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strings = (function() {
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_b = []; _d = tokens;
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for (_c = 0, _e = _d.length; _c < _e; _c++) {
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token = _d[_c];
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_b.push((function() {
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_f = [token[0], token[1].toString().replace(/\n/, '\\n')];
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tag = _f[0];
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value = _f[1];
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return "[" + tag + " " + value + "]";
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})());
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}
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return _b;
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})();
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return puts(strings.join(' '));
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};
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// Use the [OptionParser module](optparse.html) to extract all options from
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// `process.argv` that are specified in `SWITCHES`.
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parseOptions = function() {
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var o;
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optionParser = new optparse.OptionParser(SWITCHES, BANNER);
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o = (options = optionParser.parse(process.argv));
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options.run = !(o.compile || o.print || o.lint);
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options.print = !!(o.print || (o.eval || o.stdio && o.compile));
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sources = options.arguments.slice(2, options.arguments.length);
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return sources;
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};
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// The compile-time options to pass to the CoffeeScript compiler.
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compileOptions = function(source) {
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var o;
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o = {
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source: source
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};
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o['no_wrap'] = options['no-wrap'];
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return o;
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};
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// Print the `--help` usage message and exit.
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usage = function() {
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puts(optionParser.help());
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return process.exit(0);
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};
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// Print the `--version` message and exit.
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version = function() {
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puts(("CoffeeScript version " + CoffeeScript.VERSION));
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return process.exit(0);
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};
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})();
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