fix comment replies being limited to 10

1 files changed, 66 insertions, 2 deletions

diff --git a/youtube/proto.py b/youtube/proto.py
index 6230e51..004375a 100644
--- a/youtube/proto.py
+++ b/youtube/proto.py
@@ -1,5 +1,6 @@
 from math import ceil
 import base64
+import io
 
 def byte(n):
     return bytes((n,))
@@ -61,5 +62,68 @@ def as_bytes(value):
     if isinstance(value, str):
         return value.encode('ascii')
     return value
-    
-    
\ No newline at end of file
+
+
+def read_varint(data):
+    result = 0
+    i = 0
+    while True:
+        try:
+            byte = data.read(1)[0]
+        except IndexError:
+            if i == 0:
+                raise EOFError()
+            raise Exception('Unterminated varint starting at ' + str(data.tell() - i))
+        result |= (byte & 127) << 7*i
+        if not byte & 128:
+            break
+
+        i += 1
+    return result
+
+                                
+def read_group(data, end_sequence):
+    start = data.tell()
+    index = data.original.find(end_sequence, start)
+    if index == -1:
+        raise Exception('Unterminated group')
+    data.seek(index + len(end_sequence))
+    return data.original[start:index]
+
+def read_protobuf(data):
+    data_original = data
+    data = io.BytesIO(data)
+    data.original = data_original
+    while True:
+        try:
+            tag = read_varint(data)
+        except EOFError:
+            break
+        wire_type = tag & 7
+        field_number = tag >> 3
+        
+        if wire_type == 0:
+            value = read_varint(data)
+        elif wire_type == 1:
+            value = data.read(8)
+        elif wire_type == 2:
+            length = read_varint(data)
+            value = data.read(length)
+        elif wire_type == 3:
+            end_bytes = encode_varint((field_number << 3) | 4)
+            value = read_group(data, end_bytes)
+        elif wire_type == 5:
+            value = data.read(4)
+        else:
+            raise Exception("Unknown wire type: " + str(wire_type) + ", Tag: " + bytes_to_hex(succinct_encode(tag)) + ", at position " + str(data.tell()))
+        yield (wire_type, field_number, value)
+
+def parse(data):
+    return {field_number: value for _, field_number, value in read_protobuf(data)}
+
+def b64_to_bytes(data):
+    if isinstance(data, bytes):
+        data = data.decode('ascii')
+    data = data.replace("%3D", "=")
+    return base64.urlsafe_b64decode(data + "="*((4 - len(data)%4)%4) )
+