A much more sane buffer implementation

lib/nntp/tiny/buffer.py

@@ -15,27 +15,28 @@ class OutputBuffer():
         self.sock: socket.socket = sock
         self.offset: int         = 0
 
+    def write(self, data: bytes):
+        count     = len(data)
+        remaining = count
+
+        while remaining > 0:
+            if self.offset >= self.size:
+                self.offset = 0
+
+            needed = self.size - self.offset
+            copy   = min(needed, remaining)
+
+            self.buf[self.offset:self.offset+copy] = data[0:copy]
+
+            remaining   -= copy
+            self.offset += copy
+
+            if self.offset >= self.size:
+                self.sock.send(self.buf)
+                self.offset = 0
+
     def print(self, text: str, end: str="\r\n"):
-        data  = bytes(text + end, 'utf-8')
-        count = len(data)
-
-        if count > self.size:
-            return self.sock.send(data)
-
-        if count + self.offset > self.size:
-            to_fill = self.size - self.offset
-            left    = count - to_fill
-
-            self.buf[self.offset:self.size] = data[0:to_fill]
-
-            self.sock.send(self.buf)
-
-            self.offset = 0
-
-            self.buf[0:left] = data[to_fill:to_fill+left]
-        else:
-            self.buf[self.offset:self.offset+count] = data
-            self.offset += count
+        return self.write(bytes(text + end, 'utf-8'))
 
     def flush(self):
         self.sock.send(self.buf[0:self.offset])