fix: Support only origin platforms without symlinks and aliases

Signed-off-by: Itamar Shalev <[email protected]>

Author: ItamarShalev

README.md

@@ -100,11 +100,8 @@ If it is not set, the client will try to determine the platform automatically ba
 The following values are supported:
 - `linux`
 - `windows`
-- `win32`
 - `android`
-- `darwin`
 - `freebsd`
-- `macos`
 - `netbsd`
 - `openbsd`
 - `osx`

tldr.py

@@ -59,6 +59,8 @@
     "windows": "windows"
 }
 
+SUPPORTED_PLATFORMS = sorted(set(OS_DIRECTORIES.values()))
+
 
 class CacheNotExist(Exception):
     pass
@@ -202,12 +204,15 @@ def update_page_for_platform(
 
 
 def get_platform() -> str:
-    if platform := os.environ.get('TLDR_PLATFORM'):
-        platform = platform.lower()
-        if platform in OS_DIRECTORIES:
-            return OS_DIRECTORIES[platform]
+    platform_env = os.environ.get('TLDR_PLATFORM', '').strip().lower()
+    if platform_env:
+        if platform_env in SUPPORTED_PLATFORMS:
+            return platform_env
         else:
-            print("Warning: Invalid platform specified in environment variable TLDR_PLATFORM.")
+            print(
+                f"Warning: '{platform_env}' is not a supported platform specified in the "
+                "TLDR_PLATFORM environment variable.\nFalling back to automatic detection."
+            )
 
     for key in OS_DIRECTORIES:
         if sys.platform.startswith(key):