100 lines
2.4 KiB
JavaScript
100 lines
2.4 KiB
JavaScript
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#!/usr/bin/env node
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/*
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Copyright (c) 2012, Yahoo! Inc. All rights reserved.
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Copyrights licensed under the New BSD License. See the accompanying LICENSE file for terms.
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*/
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var async = require('async'),
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Command = require('./command'),
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inputError = require('./util/input-error'),
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exitProcess = process.exit; //hold a reference to original process.exit so that we are not affected even when a test changes it
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require('./register-plugins');
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function findCommandPosition(args) {
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var i;
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for (i = 0; i < args.length; i += 1) {
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if (args[i].charAt(0) !== '-') {
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return i;
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}
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}
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return -1;
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}
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function exit(ex, code) {
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// flush output for Node.js Windows pipe bug
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// https://github.com/joyent/node/issues/6247 is just one bug example
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// https://github.com/visionmedia/mocha/issues/333 has a good discussion
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var streams = [process.stdout, process.stderr];
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async.forEach(streams, function (stream, done) {
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// submit a write request and wait until it's written
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stream.write('', done);
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}, function () {
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if (ex) {
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if (typeof ex === 'string') {
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console.error(ex);
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exitProcess(1);
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} else {
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throw ex; // turn it into an uncaught exception
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}
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} else {
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exitProcess(code);
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}
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});
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}
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function errHandler (ex) {
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if (!ex) { return; }
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if (!ex.inputError) {
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// exit with exception stack trace
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exit(ex);
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} else {
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//don't print nasty traces but still exit(1)
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console.error(ex.message);
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console.error('Try "istanbul help" for usage');
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exit(null, 1);
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}
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}
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function runCommand(args, callback) {
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var pos = findCommandPosition(args),
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command,
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commandArgs,
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commandObject;
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if (pos < 0) {
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return callback(inputError.create('Need a command to run'));
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}
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commandArgs = args.slice(0, pos);
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command = args[pos];
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commandArgs.push.apply(commandArgs, args.slice(pos + 1));
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try {
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commandObject = Command.create(command);
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} catch (ex) {
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errHandler(inputError.create(ex.message));
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return;
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}
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commandObject.run(commandArgs, errHandler);
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}
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function runToCompletion(args) {
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runCommand(args, errHandler);
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}
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/* istanbul ignore if: untestable */
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if (require.main === module) {
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var args = Array.prototype.slice.call(process.argv, 2);
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runToCompletion(args);
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}
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module.exports = {
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runToCompletion: runToCompletion
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};
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