Add --minimal flag to chardetect command

chardet/cli/chardetect.py

@@ -20,7 +20,7 @@
 from ..universaldetector import UniversalDetector
 
 
-def description_of(lines, name="stdin"):
+def description_of(lines, name="stdin", minimal=False):
     """
     Return a string describing the probable encoding of a file or
     list of strings.
@@ -39,10 +39,11 @@ def description_of(lines, name="stdin"):
             break
     u.close()
     result = u.result
+    if minimal:
+        return result["encoding"]
     if result["encoding"]:
         return f'{name}: {result["encoding"]} with confidence {result["confidence"]}'
-    else:
-        return f"{name}: no result"
+    return f"{name}: no result"
 
 
 def main(argv=None):
@@ -55,17 +56,22 @@ def main(argv=None):
     """
     # Get command line arguments
     parser = argparse.ArgumentParser(
-        description="Takes one or more file paths and reports their detected \
-                     encodings"
+        description=(
+            "Takes one or more file paths and reports their detected encodings"
+        )
     )
     parser.add_argument(
         "input",
-        help="File whose encoding we would like to determine. \
-                              (default: stdin)",
+        help="File whose encoding we would like to determine. (default: stdin)",
         type=argparse.FileType("rb"),
         nargs="*",
         default=[sys.stdin.buffer],
     )
+    parser.add_argument(
+        "--minimal",
+        help="Print only the encoding to standard output",
+        action="store_true",
+    )
     parser.add_argument(
         "--version", action="version", version=f"%(prog)s {__version__}"
     )
@@ -74,13 +80,15 @@ def main(argv=None):
     for f in args.input:
         if f.isatty():
             print(
-                "You are running chardetect interactively. Press "
-                + "CTRL-D twice at the start of a blank line to signal the "
-                + "end of your input. If you want help, run chardetect "
-                + "--help\n",
+                (
+                    "You are running chardetect interactively. Press "
+                    "CTRL-D twice at the start of a blank line to signal the "
+                    "end of your input. If you want help, run chardetect "
+                    "--help\n"
+                ),
                 file=sys.stderr,
             )
-        print(description_of(f, f.name))
+        print(description_of(f, f.name, minimal=args.minimal))
 
 
 if __name__ == "__main__":