moar validators

1 files changed, 15 insertions, 4 deletions

diff --git a/kvmd/validators/fs.py b/kvmd/validators/fs.py
index ed895818..505df8e2 100644
--- a/kvmd/validators/fs.py
+++ b/kvmd/validators/fs.py
@@ -22,17 +22,20 @@
 
 import os
 
+from typing import List
 from typing import Any
 
 from . import raise_error
 from . import check_not_none_string
 
 from .basic import valid_number
+from .basic import valid_string_list
 
 
 # =====
-def valid_abs_path(arg: Any, exists: bool=False) -> str:
-    name = ("existent absolute path" if exists else "absolute path")
+def valid_abs_path(arg: Any, exists: bool=False, name: str="") -> str:
+    if not name:
+        name = ("existent absolute path" if exists else "absolute path")
 
     if len(str(arg).strip()) == 0:
         arg = None
@@ -44,9 +47,17 @@ def valid_abs_path(arg: Any, exists: bool=False) -> str:
     return arg
 
 
-def valid_abs_path_exists(arg: Any) -> str:
-    return valid_abs_path(arg, exists=True)
+def valid_abs_path_exists(arg: Any, name: str="") -> str:
+    return valid_abs_path(arg, exists=True, name=name)
 
 
 def valid_unix_mode(arg: Any) -> int:
     return int(valid_number(arg, min=0, name="UNIX mode"))
+
+
+def valid_command(arg: Any) -> List[str]:
+    cmd = valid_string_list(arg, delim=r"[,\t]+", name="command")
+    if len(cmd) == 0:
+        raise_error(arg, "command")
+    cmd[0] = valid_abs_path_exists(cmd[0], name="command entry point")
+    return cmd