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don't make the command-line so OOP-y -- it's just a script

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This commit is contained in:
Jeremy Ashkenas
2010-02-13 10:16:28 -05:00
parent 7d348b5eae
commit b224d58a36
2 changed files with 67 additions and 57 deletions
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65
lib/coffee_script/command_line.js
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@@ -1,5 +1,5 @@
(function(){
var BANNER, SWITCHES, WATCH_INTERVAL, coffee, optparse, path, posix;
var BANNER, SWITCHES, WATCH_INTERVAL, coffee, compile, compile_scripts, lint, option_parser, options, optparse, parse_options, path, posix, sources, tokenize, usage, version, write_js;
posix = require('posix');
path = require('path');
coffee = require('coffee-script');
@@ -7,41 +7,46 @@
BANNER = "coffee compiles CoffeeScript source files into JavaScript.\n\nUsage:\n coffee path/to/script.coffee";
SWITCHES = [['-i', '--interactive', 'run an interactive CoffeeScript REPL'], ['-r', '--run', 'compile and run a CoffeeScript'], ['-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'], ['-e', '--eval', 'compile a cli scriptlet or read from stdin'], ['-t', '--tokens', 'print the tokens that the lexer produces'], ['--tree', 'print the parse tree that Jison produces'], ['-n', '--no-wrap', 'raw output, no function safety wrapper'], ['-g', '--globals', 'attach all top-level variables as globals'], ['-v', '--version', 'display CoffeeScript version'], ['-h', '--help', 'display this help message']];
WATCH_INTERVAL = 0.5;
options = {};
sources = [];
option_parser = null;
// The CommandLine handles all of the functionality of the `coffee` utility.
exports.run = function run() {
this.parse_options();
if (!(this.sources.length)) {
this.usage();
parse_options();
if (options.interactive) {
launch_repl();
}
this.compile_scripts();
if (!(sources.length)) {
usage();
}
compile_scripts();
return this;
};
// The "--help" usage message.
exports.usage = function usage() {
puts('\n' + this.option_parser.toString() + '\n');
usage = function usage() {
puts('\n' + option_parser.toString() + '\n');
return process.exit(0);
};
// The "--version" message.
exports.version = function version() {
version = function version() {
puts("CoffeeScript version " + coffee.VERSION);
return process.exit(0);
};
// Compile a single source file to JavaScript.
exports.compile = function compile(script, source) {
var options;
compile = function compile(script, source) {
source = source || 'error';
options = {};
if (this.options.no_wrap) {
if (options.no_wrap) {
options.no_wrap = true;
}
if (this.options.globals) {
if (options.globals) {
options.globals = true;
}
try {
return CoffeeScript.compile(script, options);
} catch (error) {
process.stdio.writeError(source + ': ' + error.toString());
if (!(this.options.watch)) {
if (!(options.watch)) {
process.exit(1);
}
return null;
@@ -49,16 +54,16 @@
};
// Compiles the source CoffeeScript, returning the desired JavaScript, tokens,
// or JSLint results.
exports.compile_scripts = function compile_scripts() {
compile_scripts = function compile_scripts() {
var opts, source;
if (!((source = this.sources.shift()))) {
if (!((source = sources.shift()))) {
return null;
}
opts = this.options;
opts = options;
return posix.cat(source).addCallback(function(code) {
var js;
if (opts.tokens) {
puts(exports.tokenize(code));
puts(tokenize(code));
} else if (opts.tree) {
puts(coffee.tree(code).toString());
} else {
@@ -68,26 +73,26 @@
} else if (opts.print) {
puts(js);
} else if (opts.lint) {
exports.lint(js);
lint(js);
} else {
exports.write_js(source, coffee.compile(code));
write_js(source, coffee.compile(code));
}
}
return exports.compile_scripts();
return compile_scripts();
});
};
// Write out a JavaScript source file with the compiled code.
exports.write_js = function write_js(source, js) {
write_js = function write_js(source, js) {
var dir, filename, js_path;
filename = path.basename(source, path.extname(source)) + '.js';
dir = this.options.output || path.dirname(source);
dir = options.output || path.dirname(source);
js_path = path.join(dir, filename);
return posix.open(js_path, process.O_CREAT | process.O_WRONLY | process.O_TRUNC, parseInt('0755', 8)).addCallback(function(fd) {
return posix.write(fd, js);
});
};
// Pretty-print the token stream.
exports.tokenize = function tokenize(code) {
tokenize = function tokenize(code) {
var strings;
strings = coffee.tokenize(code).map(function(token) {
return '[' + token[0] + ' ' + token[1].toString().replace(/\n/, '\\n') + ']';
@@ -95,7 +100,7 @@
return strings.join(' ');
};
// Pipe compiled JS through JSLint (requires a working 'jsl' command).
exports.lint = function lint(js) {
lint = function lint(js) {
var jsl;
jsl = process.createChildProcess('jsl', ['-nologo', '-stdin']);
jsl.addListener('output', function(result) {
@@ -112,10 +117,10 @@
return jsl.close();
};
// Use OptionParser for all the options.
exports.parse_options = function parse_options() {
parse_options = function parse_options() {
var oparser, opts, paths;
opts = (this.options = {});
oparser = (this.option_parser = new optparse.OptionParser(SWITCHES));
opts = (options = {});
oparser = (option_parser = new optparse.OptionParser(SWITCHES));
oparser.banner = BANNER;
oparser.add = oparser['on'];
oparser.add('interactive', function() {
@@ -147,7 +152,7 @@
});
oparser.add('help', (function(__this) {
var __func = function() {
return this.usage();
return usage();
};
return (function() {
return __func.apply(__this, arguments);
@@ -155,13 +160,13 @@
})(this));
oparser.add('version', (function(__this) {
var __func = function() {
return this.version();
return version();
};
return (function() {
return __func.apply(__this, arguments);
});
})(this));
paths = oparser.parse(process.ARGV);
return this.sources = paths.slice(2, paths.length);
return sources = paths.slice(2, paths.length);
};
})();