From 17a84f8069df0684756311f66bdd92165805c47c Mon Sep 17 00:00:00 2001
From: Amr Ragaey <amragaey@gmail.com>
Date: Sun, 14 Aug 2016 20:46:19 +0200
Subject: [PATCH 1/2] add python-runner functions 'run', and 'writeFiles'

---
 src/python_runner.js | 61 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 61 insertions(+)
 create mode 100644 src/python_runner.js

diff --git a/src/python_runner.js b/src/python_runner.js
new file mode 100644
index 00000000..4c3a8b23
--- /dev/null
+++ b/src/python_runner.js
@@ -0,0 +1,61 @@
+var pythonRunner = function(path, folder, fileName, code, stdin)
+{
+    this.path=path;
+    this.folder=folder;
+    this.fileName=fileName;
+    this.code = code;
+    this.stdin=stdin;
+}
+
+pythonRunner.prototype.run = function(callback) 
+{
+    var myRunner = this;
+
+    myRunner.writeFiles( function(){
+        myRunner.executeScript(callback);
+        console.log("done");
+    });
+}
+
+pythonRunner.prototype.writeFiles = function(callback)
+{
+    var myRunner = this;
+
+    var exec = require('child_process').exec;
+    var fs = require('fs');
+
+    console.log("mkdir "+ myRunner.path + myRunner.folder);
+    exec("mkdir "+ myRunner.path + myRunner.folder + "&& chmod 777 "+ myRunner.path + myRunner.folder, function(st)
+        {
+            fs.writeFile(myRunner.path + myRunner.folder + "/" + myRunner.fileName, myRunner.code,function(err) {
+                console.log(myRunner.path + myRunner.folder + "/" + myRunner.fileName);
+                if (err) {
+                    console.log(err);
+                } 
+                else {
+                    console.log("Python file saved!");
+
+                    fs.writeFile(myRunner.path + myRunner.folder + "/" + "inputFile", myRunner.stdin,function(err) {
+                        console.log(myRunner.path + myRunner.folder + "/" + "inputFile");
+                        if (err) {
+                            console.log(err);
+                        }    
+                        else {
+                            console.log("Input file saved!");
+                            callback();
+                        } 
+                    });    
+                } 
+            });
+ 
+        });
+}
+
+pythonRunner.prototype.executeScript = function(callback)
+{
+    var myRunner = this;
+
+}
+
+
+module.exports = pythonRunner;
\ No newline at end of file

From b2d811848fad8232d3944568de8d8f4808246a61 Mon Sep 17 00:00:00 2001
From: Amr Ragaey <amragaey@gmail.com>
Date: Tue, 16 Aug 2016 01:38:11 +0200
Subject: [PATCH 2/2] add executeScript and killScript functions

---
 src/python_runner.js | 33 ++++++++++++++++++++++++++++++---
 1 file changed, 30 insertions(+), 3 deletions(-)

diff --git a/src/python_runner.js b/src/python_runner.js
index 4c3a8b23..6a525ad3 100644
--- a/src/python_runner.js
+++ b/src/python_runner.js
@@ -13,7 +13,6 @@ pythonRunner.prototype.run = function(callback)
 
     myRunner.writeFiles( function(){
         myRunner.executeScript(callback);
-        console.log("done");
     });
 }
 
@@ -35,8 +34,8 @@ pythonRunner.prototype.writeFiles = function(callback)
                 else {
                     console.log("Python file saved!");
 
-                    fs.writeFile(myRunner.path + myRunner.folder + "/" + "inputFile", myRunner.stdin,function(err) {
-                        console.log(myRunner.path + myRunner.folder + "/" + "inputFile");
+                    fs.writeFile(myRunner.path + myRunner.folder + "/inputFile", myRunner.stdin,function(err) {
+                        console.log(myRunner.path + myRunner.folder + "/inputFile");
                         if (err) {
                             console.log(err);
                         }    
@@ -55,7 +54,35 @@ pythonRunner.prototype.executeScript = function(callback)
 {
     var myRunner = this;
 
+    var exec = require('child_process').exec;
+    var fs = require('fs');
+
+    //execute ppython script -> write stdout or stderr to output.text
+    //return output.text contents in callback
+    c = exec("python " + myRunner.path + myRunner.folder + "/" + myRunner.fileName + " -< " + myRunner.path + myRunner.folder + "/inputFile " + "2>&1 | tee -a " + myRunner.path + myRunner.folder + "/output.text", function(st){
+        fs.readFile(myRunner.path + myRunner.folder + '/output.text', 'utf8', function(err, data){
+                    if (!data) {
+                        console.log= "error reading output file";
+                    }
+                    else {
+                        callback(data);
+                    }
+        });
+    });
+
+    console.log(c.pid);
 }
 
+pythonRunner.prototype.killScript = function(callback)
+{
+    var myRunner = this;
+    var exec = require('child_process').exec;
+
+    //remove temporary folder and kill python process
+    exec("rm -rf "+ myRunner.path + myRunner.folder, function(st){
+            c.kill();
+            callback("process terminated");
+    });
+}
 
 module.exports = pythonRunner;
\ No newline at end of file