Add Tab before every message

server.py

@@ -7,19 +7,18 @@ from http.server import HTTPServer, BaseHTTPRequestHandler
 from io import BytesIO
 import string
 import base64
-import queue
+from queue import Queue
 from threading import Thread
+import subprocess
 
 NULL_CHAR = chr(0)
-file = open('/dev/hidg0', 'rb+')
 
-alphabet_lower = set(string.ascii_lowercase)
-alphabet_upper = set(string.ascii_uppercase)
 
-message_queue = queue.SimpleQueue
+class KeyboardHandler:
 
-thread = Thread(target = writer)
-thread.start()
+    def __init__(self, hidfile='/dev/hidg0'):
+        # Open keyboard device for binary appending
+        self.file = open(hidfile, 'ba')
 
     colors = {
         "Z": "a",  # Black
@@ -73,95 +72,110 @@ special_chars = {
         '~': [chr(32), chr(0x35)],
     }
 
-
-def writer() {
-    while true:
-        if not message_queue.empty():
-            message = message_queue.get()
-            printstring(message)
-}
-
-def write_report(report):
-    file.write(report.encode())
+    alphabet_lower = set(string.ascii_lowercase)
+    alphabet_upper = set(string.ascii_uppercase)
 
 
-def release_keys():
-    write_report(NULL_CHAR * 8)
+    def write_report(self, report):
+        self.file.write(report.encode())
 
 
-def printchar(c):
-    if c in alphabet_lower:
-        write_report(NULL_CHAR * 2 + chr(4 + ord(c) - ord('a')) + NULL_CHAR * 5)
-    elif c in alphabet_upper:
-        write_report(chr(32) + NULL_CHAR + chr(4 + ord(c) - ord('A')) + NULL_CHAR * 5)
+    def release_keys(self):
+        self.write_report(NULL_CHAR * 8)
+
+    def printchar(self, c):
+        if c in self.alphabet_lower:
+            self.write_report(NULL_CHAR * 2 + chr(4 + ord(c) - ord('a')) + NULL_CHAR * 5)
+        elif c in self.alphabet_upper:
+            self.write_report(chr(32) + NULL_CHAR + chr(4 + ord(c) - ord('A')) + NULL_CHAR * 5)
         elif c.isdigit():
-        write_report(NULL_CHAR * 2 + chr(0x1e + ((ord(c) - ord('0') - 1) % 10)) + NULL_CHAR * 5)
-    elif c in special_chars:
-        write_report(special_chars[c][0] + NULL_CHAR + special_chars[c][1] + NULL_CHAR * 5)
+            self.write_report(NULL_CHAR * 2 + chr(0x1e + ((ord(c) - ord('0') - 1) % 10)) + NULL_CHAR * 5)
+        elif c in self.special_chars:
+            self.write_report(self.special_chars[c][0] + NULL_CHAR + self.special_chars[c][1] + NULL_CHAR * 5)
         else:
-        write_report(chr(32) + NULL_CHAR + chr(0x38) + NULL_CHAR * 5)
-    release_keys()
+            self.write_report(chr(32) + NULL_CHAR + chr(0x38) + NULL_CHAR * 5)
+        self.release_keys()
 
 
-def change_color(background, foreground):
-    if background in colors and foreground in colors:
+    def change_color(self, background, foreground):
+        if background in self.colors and foreground in self.colors:
             # DELETE keypress
-        write_report(NULL_CHAR * 2 + chr(0x2a) + NULL_CHAR * 5)
-        release_keys()
-        write_report(NULL_CHAR * 2 + chr(4 + ord(colors[background]) - ord('a')) + NULL_CHAR * 5)
-        release_keys()
-        write_report(NULL_CHAR * 2 + chr(4 + ord(colors[foreground]) - ord('a')) + NULL_CHAR * 5)
+            self.write_report(NULL_CHAR * 2 + chr(0x2a) + NULL_CHAR * 5)
+            self.release_keys()
+            self.write_report(NULL_CHAR * 2 + chr(4 + ord(self.colors[background]) - ord('a')) + NULL_CHAR * 5)
+            self.release_keys()
+            self.write_report(NULL_CHAR * 2 + chr(4 + ord(self.colors[foreground]) - ord('a')) + NULL_CHAR * 5)
         else:
             print('Malformed Color code: §' + background + foreground)
-        write_report(chr(32) + NULL_CHAR + chr(0x38) + NULL_CHAR * 5)
-    release_keys()
+            self.write_report(chr(32) + NULL_CHAR + chr(0x38) + NULL_CHAR * 5)
+        self.release_keys()
 
 
-def printstring(s):
+    def printstring(self, s):
         last_c = ''
         last_last_c = ''
+        # send Tab-key, to indicate this is sent by machine, not by human
+        self.write_report(NULL_CHAR * 2 + chr(0x2b) + NULL_CHAR*5)
+        self.release_keys()
         for c in s:
             if last_last_c == '§':
-            change_color(last_c, c)
+                self.change_color(last_c, c)
             elif c != '§' and last_c != '§':
-            printchar(c)
+                self.printchar(c)
             last_c, last_last_c = c, last_c
 
 
-def reset_color():
-    change_color('Z', 'g')
-    release_keys()
+    def reset_color(self):
+        self.change_color('Z', 'g')
+        self.release_keys()
 
-def beep():
-    write_report(NULL_CHAR * 2 + chr(0x29) + 'ff' + NULL_CHAR * 3)
-    release_keys()
-    print('beep')
+    def beep(self, code='fff'):
+        self.write_report(NULL_CHAR * 2 + chr(0x29) + NULL_CHAR * 5)
+        self.release_keys()
+        for char in code:
+            self.printchar(char)
 
 
 class SimpleHTTPRequestHandler(BaseHTTPRequestHandler):
 
+    def __init__(self, request, client_address, server):
+        self.messagequeue = server.messagequeue
+        super().__init__(request, client_address, server)
+
     def do_GET(self):
         self.send_response(200)
         self.end_headers()
-        self.wfile.write(b'Hello, world!')
+        self.wfile.write(b'TAp reporting for duty!')
 
     def do_POST(self):
-        print(self.headers)
         message = base64.b64decode(self.headers['X-Messages']).decode('utf8')
         self.send_response(200)
         self.end_headers()
-        response = BytesIO()
-        response.write(b'This is POST request. ')
-        response.write(b'Received: ')
-        self.wfile.write(response.getvalue())
+        self.messagequeue.put_nowait(message)
+        self.wfile.write(b'Received message\n')
+
+def message_collector(messagequeue):
+    keyboard = KeyboardHandler()
+    while True:
+        message = messagequeue.get()
         if message == 'reset':
-            message_queue.put('\n' * 32)
+            keyboard.printstring('\n' * 32)
         else:
-            message_queue.put(message + '\n')
-            # beep()
-        reset_color()
-        file.flush()
+            keyboard.printstring(message + '\n')
+            args = [str(ord(s)) for s in message if 0 < ord(s) < 255][:20]
+            subprocess.run(["i2cset", "-y", "1", "8", "0"] + args + ['i'])
+            time.sleep(int(len(args) * 1.5))
+        keyboard.reset_color()
+        keyboard.file.flush()
+        if messagequeue.empty():
+            keyboard.beep()
+            keyboard.file.flush()
 
 
+
+shared_messagequeue = Queue()
 httpd = HTTPServer(('0.0.0.0', 8000), SimpleHTTPRequestHandler)
+httpd.messagequeue = shared_messagequeue
+thread = Thread(target = message_collector, args = (shared_messagequeue, ))
+thread.start()
 httpd.serve_forever()