src/PursLoader/ChildProcess.js

   1 'use strict';
   2
   3 // module PursLoader.ChildProcess
   4
   5 var child_process = require('child_process');
   6
   7 var chalk = require('chalk');
   8
   9 function spawnFn(command, args, errback, callback) {
  10   return function(){
  11     var process = child_process.spawn(command, args);
  12
  13     var stdout = new Buffer(0);
  14
  15     var stderr = new Buffer(0);
  16
  17     process.stdout.on('data', function(data){
  18       stdout = Buffer.concat([stdout, new Buffer(data)]);
  19     });
  20
  21     process.stderr.on('data', function(data){
  22       stderr = Buffer.concat([stderr, new Buffer(data)]);
  23     });
  24
  25     process.on('close', function(code){
  26       var output = stdout.toString('utf-8');
  27
  28       var error = stderr.toString('utf-8');
  29
  30       if (error.length > 0) {
  31          console.error('\n' + chalk.red('*') + ' ' + error);
  32       }
  33
  34       if (code !== 0) errback(new Error('Process terminated with code ' + code))();
  35       else callback(output)();
  36     });
  37   };
  38 }
  39
  40 exports.spawnFn = spawnFn;