Fix Windows compatibility issues and AGE and GPG support

libagent/util.py

@@ -5,6 +5,7 @@ import functools
 import io
 import logging
 import struct
+import sys
 import time
 
 log = logging.getLogger(__name__)
@@ -258,6 +259,30 @@ def assuan_serialize(data):
     return data
 
 
+def escape_cmd_quotes(in_str):
+    """
+    Escape a string for use as a command line argument inside quotes.
+
+    Does not add quotes. This allows appending multiple strings inside the quotes.
+    """
+    if sys.platform == 'win32':
+        return in_str.translate(str.maketrans({'%': '%%', '\"': '\"\"'}))
+    else:
+        return in_str.translate(str.maketrans({'\"': '\\\"', '\'': '\\\'', '\\': '\\\\'}))
+
+
+def escape_cmd_win(in_str):
+    """Escape a string for Windows batch files in a context where quotes cannot be used."""
+    return in_str.translate(str.maketrans({'\"': '^\"',
+                                           '%': '%%',
+                                           '&': '^&',
+                                           '\'': '^\'',
+                                           '<': '^<',
+                                           '>': '^>',
+                                           '^': '^^',
+                                           '|': '^|'}))
+
+
 class ExpiringCache:
     """Simple cache with a deadline."""