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