#initial setup

ax4 · ax4 · commit 54dac36121e9 · 2016-05-20T16:05:43.000-07:00
an attempt
diff --git a/README.md b/README.md
@@ -0,0 +1,10 @@
+﻿# Python Fiddle with node.js implement (python-shell + sockect.io)
+
+A backend interpreted .py shell example. 
+
+To run
+
+```
+npm install python-shell
+npm install sockect.io
+```
diff --git a/client.html b/client.html
@@ -0,0 +1,35 @@
+﻿<!DOCTYPE html>
+
+<html>
+<head>
+    <title>PY_shell demo</title>
+</head>
+<body>
+    <p><textarea rows="4" cols="50" id="code">
+print(100)
+print(200)
+    </textarea></p>
+    <p><input type='button' id='run' value='Run !' /></p>
+    <div id='message'></div>
+    <script src='https://cdn.socket.io/socket.io-1.4.5.js'></script>
+    <script>
+        var socket = io(window.location.origin); 
+        var connection = -1; 
+        socket.on('connect', function () { connection += 1; });
+
+        // emit the .py code from input box
+        document.getElementById('run').onclick = function () {
+            socket.emit('run', {
+                    code: document.getElementById('code').value, 
+                },
+                function (res) {
+                document.getElementById('message').innerHTML += (
+                    '<p>Timestamp: ' + res.timestamp + '</p>'+
+                    '<p>Code: ' + res.code + '</p>'+
+                    '<p>StdOut: ' + res.result + '</p>'
+                )
+            });
+        };
+    </script>
+</body>
+</html>
diff --git a/server.js b/server.js
@@ -0,0 +1,77 @@
+﻿'use strict'
+
+var http = require('http');
+var port = process.env.port || 1337;
+var fs = require('fs'); 
+var io = require('socket.io');
+var PythonShell = require('python-shell'); 
+
+// web content
+var client = fs.readFileSync('client.html'); 
+
+// http server: send the web content
+var server = http.createServer(function (req, res) {
+    res.writeHead(200, {});
+    res.end(client); 
+});
+
+// socket.io server: exchange data dynamically  
+var ioserver = io(server);
+
+ioserver.on('connection', function (socket) {
+    // send the std_out back
+    socket.on('run', function (req, res) {
+        // write a temp file for .py code
+        var uid = Date.now(); 
+        var source = "./tmp/input/" + uid + ".py"; 
+        var dist = "./tmp/output/" + uid; 
+        fs.writeFile(source, req.code, function (err) {
+            if (err) {
+                return console.log(err);
+            }
+            console.log("The input file was saved!");
+        });
+        fs.writeFile(dist, "", function (err) {
+            if (err) {
+                return console.log(err);
+            }
+            console.log("The output file was saved!");
+        });
+        
+        // run .py code and hear from stdout
+        var pyshell = new PythonShell(source); 
+        pyshell.on('message', function (stdout) {
+            var temp = stdout;
+            console.log(temp);
+            fs.appendFile(dist, temp, function (err) {
+                if (err) {
+                    return console.log(err);
+                }
+                console.log("The output file was appended!");
+            });
+        });
+        
+        pyshell.end(function () {
+            fs.readFile(dist,"utf-8", function (err, data) {
+                if (err) {
+                    return console.log(err);
+                }
+                console.log("hello read file");
+                console.log(data);
+                res({
+                    timestamp: Date.now(), 
+                    file: pyshell.script, 
+                    code: req.code, 
+                    result: data,  
+                }); 
+            });
+            
+        });
+    });
+
+
+});
+
+// run the server 
+
+server.listen(port); 
