[RSPEED-403] Prevent binary stdin

command_line_assistant/initialize.py

@@ -4,6 +4,9 @@
 from argparse import ArgumentParser, Namespace
 
 from command_line_assistant.commands import history, query, record
+from command_line_assistant.rendering.decorators.colors import ColorDecorator
+from command_line_assistant.rendering.decorators.text import EmojiDecorator
+from command_line_assistant.rendering.renders.text import TextRenderer
 from command_line_assistant.utils.cli import (
     add_default_command,
     create_argument_parser,
@@ -37,7 +40,19 @@ def initialize() -> int:
     """
     parser = register_subcommands()
 
-    stdin = read_stdin()
+    stdin = None
+    try:
+        stdin = read_stdin()
+    except UnicodeDecodeError:
+        # Usually happens when the user try to cat a binary file and redirect that to us.
+        text_renderer = TextRenderer()
+        text_renderer.update(ColorDecorator(foreground="red"))
+        text_renderer.update(EmojiDecorator(emoji="U+1F641"))
+        text_renderer.render(
+            "The stdin provided could not be decoded. Please, make sure it is in textual format."
+        )
+        return 1
+
     args = add_default_command(stdin, sys.argv)
 
     # Small workaround to include the stdin in the namespace object in case it exists.

tests/test_initialize.py

@@ -116,6 +116,20 @@ def test_initialize_with_help(capsys):
         assert "usage:" in captured.out
 
 
+def test_initialize_bad_stdin(capsys):
+    with patch("command_line_assistant.initialize.read_stdin") as mock_stdin:
+        mock_stdin.side_effect = UnicodeDecodeError(
+            "utf-8", b"", 0, 1, "invalid start byte"
+        )
+        initialize()
+
+    captured = capsys.readouterr()
+    assert (
+        "The stdin provided could not be decoded. Please, make sure it is in textual format."
+        in captured.out
+    )
+
+
 @pytest.mark.parametrize(
     (
         "argv",