Merge pull request #27 from ethul/topic/issue-26

Topic/issue 26

1 files changed, 40 insertions, 0 deletions

diff --git a/src/PursLoader/ChildProcess.js b/src/PursLoader/ChildProcess.js
new file mode 100644
index 0000000..d62aef6
--- /dev/null
+++ b/src/PursLoader/ChildProcess.js
@@ -0,0 +1,40 @@
+'use strict';
+
+// module PursLoader.ChildProcess
+
+var child_process = require('child_process');
+
+var chalk = require('chalk');
+
+function spawnFn(command, args, errback, callback) {
+  return function(){
+    var process = child_process.spawn(command, args);
+
+    var stdout = new Buffer(0);
+
+    var stderr = new Buffer(0);
+
+    process.stdout.on('data', function(data){
+      stdout = Buffer.concat([stdout, new Buffer(data)]);
+    });
+
+    process.stderr.on('data', function(data){
+      stderr = Buffer.concat([stderr, new Buffer(data)]);
+    });
+
+    process.on('close', function(code){
+      var output = stdout.toString('utf-8');
+
+      var error = stderr.toString('utf-8');
+
+      if (error.length > 0) {
+         console.error('\n' + chalk.red('*') + ' ' + error);
+      }
+
+      if (code !== 0) errback(new Error('Process terminated with code ' + code))();
+      else callback(output)();
+    });
+  };
+}
+
+exports.spawnFn = spawnFn;