Added some tools

- syntax validator for usernames
- syntax vaidator for UUIDs

GetPlayerData now accepts UUIDs too

README.md

@@ -5,22 +5,41 @@ Getting Minecraft Player Information from Mojang API.
 1. `pip install mcuuid`
 2. Use the module like this:
 
+### API
 ```
 from mcuuid.api import GetPlayerData
 
-player = GetPlayerData(username)
+player = GetPlayerData(identifier)
 
 if player.valid is True:
     uuid = player.uuid
     name = player.username
 ```
 
-Read `test.py` for some explaination.
+Identifier can be a username or a UUID.
 
-When `username = "gronkh"`:
+When `identifier = "gronkh"`:
 `uuid` will be `"a2080281c2784181b961d99ed2f3347c"`
 and `name` will be `"Gronkh"`
 
+
+### Tools
+Syntax check of username
+```
+from mcuuid.tools import is_valid_minecraft_username
+
+if is_valid_minecraft_username('gronkh'):
+  print('Valid')
+```
+
+Syntaxcheck of UUID
+```
+from mcuuid.tools import is_valid_mojang_uuid
+
+if is_valid_mojang_uuid('a2080281c2784181b961d99ed2f3347c'):
+  print('Valid')
+```
+
 ## Test file
 Usage
 ```
@@ -28,10 +47,20 @@ $ python test.py gronkh
 ```
 or
 ```
+$ python test.py a2080281c2784181b961d99ed2f3347c
+```
+or
+```
 $ python test.py
-Please enter a username:
+Please enter a username or UUID:
 gronkh
 ```
+or
+```
+$ python test.py
+Please enter a username or UUID:
+a2080281c2784181b961d99ed2f3347c
+```
 
 Response:
 ```

mcuuid/api.py

@@ -7,11 +7,12 @@ Uses the official Mojang API to fetch player data.
 ### Import necessary modules
 import http.client
 import json
-
+from tools import is_valid_minecraft_username
+from tools import is_valid_mojang_uuid
 
 ### Main class
 class GetPlayerData:
-    def __init__(self, username, timestamp=None):
+    def __init__(self, identifier, timestamp=None):
         self.valid = True
         """
             Get the UUID of the player.
@@ -29,9 +30,18 @@ class GetPlayerData:
         if timestamp is not None:
             get_args = "?at=" + str(timestamp)
 
+        req = ""
+        if is_valid_minecraft_username(identifier):
+            req = "/users/profiles/minecraft/" + identifier + get_args
+        elif is_valid_mojang_uuid(identifier):
+            req = "/user/profiles/" + identifier + "/names" + get_args
+        else:
+            self.valid = False
+
+        if self.valid:
             # Request the UUID
             http_conn = http.client.HTTPSConnection("api.mojang.com");
-        http_conn.request("GET", "/users/profiles/minecraft/" + username + get_args,
+            http_conn.request("GET", req,
                 headers={'User-Agent':'https://github.com/clerie/mcuuid', 'Content-Type':'application/json'});
             response = http_conn.getresponse().read().decode("utf-8")
 
@@ -42,7 +52,31 @@ class GetPlayerData:
             else:
                 # Parse the JSON
                 json_data = json.loads(response)
+                if is_valid_minecraft_username(identifier):
                     # The UUID
                     self.uuid = json_data['id']
                     # The username written correctly
                     self.username = json_data['name']
+                elif is_valid_mojang_uuid(identifier):
+                    # The UUID
+                    self.uuid = identifier
+
+                    if timestamp is None:
+                        timestamp = 0
+
+                    current_name = ""
+                    current_time = 0
+
+                    # Getting the current username
+                    for name in json_data:
+                        if 'changedToAt' in name:
+                            changed_to_at = name['changedToAt']
+                        else:
+                            changed_to_at = 0
+
+                        if changed_to_at <= timestamp and current_time <= changed_to_at:
+                            current_time = changed_to_at
+                            current_name = name['name']
+
+                    # The username written correctly
+                    self.username = name['name']

mcuuid/tools.py

@@ -0,0 +1,31 @@
+def is_valid_minecraft_username(username):
+    """https://help.mojang.com/customer/portal/articles/928638-minecraft-usernames"""
+    allowed_chars = 'abcdefghijklmnopqrstuvwxyz1234567890_'
+    allowed_len = [3, 16]
+
+    username = username.lower()
+
+    if len(username) < allowed_len[0] or len(username) > allowed_len[1]:
+        return False
+
+    for char in username:
+        if char not in allowed_chars:
+            return False
+
+    return True
+
+def is_valid_mojang_uuid(uuid):
+    """https://minecraft-de.gamepedia.com/UUID"""
+    allowed_chars = '0123456789abcdef'
+    allowed_len = 32
+
+    uuid = uuid.lower()
+
+    if len(uuid) != 32:
+        return False
+
+    for char in uuid:
+        if char not in allowed_chars:
+            return False
+
+    return True

test.py

@@ -1,5 +1,7 @@
 ### Import our module
 from mcuuid.api import GetPlayerData
+from mcuuid.tools import is_valid_minecraft_username
+from mcuuid.tools import is_valid_mojang_uuid
 
 ### Import some other necessary modules
 import sys
@@ -7,14 +9,20 @@ import sys
 ### Which username should we use?
 # Are there some arguments brought by the console use the first after the filename as username
 if len(sys.argv) > 1:
-    username = sys.argv[1]
+    identifier = sys.argv[1]
 # Else, ask for a username by userinput
 else:
-    print("Please enter a username: ")
-    username = raw_input()
+    print("Please enter a username or UUID: ")
+    identifier = raw_input()
+
+if is_valid_minecraft_username(identifier) or is_valid_mojang_uuid(identifier):
+    if is_valid_minecraft_username(identifier):
+        print('Valid username')
+    if is_valid_mojang_uuid(identifier):
+        print('Valid UUID')
 
     ### Obtaining the playerinformation using our module
-player = GetPlayerData(username)
+    player = GetPlayerData(identifier)
     # Check if the request was valid and the user exists
     if player.valid is True:
         # Getting UUID
@@ -25,6 +33,11 @@ if player.valid is True:
         # Print everything
         print('UUID: ' + uuid)
         print('correct name: ' + name)
+
+
     # Error message
     else:
         print("That player was not found.")
+
+else:
+    print('identifier is not valid')