initial commit

node_modules/python/lib/python.js

@@ -0,0 +1,60 @@
+var util     =   require('util');
+var spawn    =   require('child_process').spawn;
+var child    =   spawn('python',['-u','-i']);
+var cmdQueue =   new Array();
+
+
+child.stdout.on('data', handleStdout);
+child.stderr.on('data', handleStderr);
+child.on('exit', handleExit);
+
+
+function handleStdout(data) {
+  var datastr = data.toString('utf8');
+  var finished = false;
+  if (datastr.match(/Command Start\n/)) {
+    datastr = datastr.replace(/Command Start\n/,'');
+  } 
+  if (datastr.match(/Command End\n/)) {
+    datastr = datastr.replace(/Command End\n/,'');
+    finished = true;
+  }
+  if (cmdQueue.length > 0) {
+    cmdQueue[0].data+=datastr;
+  } 
+  if (finished) {
+    cmd = cmdQueue.shift();
+    if (cmd && cmd.command) {
+      if (undefined != typeof cmd.callback) {
+        cmd.callback(null, cmd.data);
+        processQueue();
+      }
+    }
+  } 
+};
+
+
+function handleStderr(data) {
+  processQueue();
+};
+
+function processQueue() {
+  if (cmdQueue.length > 0 && cmdQueue[0].state === 'pending') {
+    cmdQueue[0].state = 'processing';
+    child.stdin.write(cmdQueue[0].command, encoding='utf8');
+  }
+};
+
+
+function handleExit(code) {
+  console.log('child process exited with code ' + code);
+  process.exit();
+};
+
+
+this.shell = function (command, callback) {
+  command = 'print "Command Start"; ' + command + '\nprint "Command End"';
+  if (command.charAt[command.length-1]!='\n') command += '\n';
+  cmdQueue.push({'command':command, 'callback':callback, 'data': '', state: 'pending'});
+  processQueue();
+};