Added version output with -v

Signed-off-by: Jacob Torrey <[email protected]>

zippy/zippy.py

@@ -15,6 +15,7 @@
 from typing import List, Optional, Tuple, TypeAlias
 from multiprocessing import Pool, cpu_count
 from importlib.resources import files
+from .__init__ import __version__
 
 Score : TypeAlias = tuple[str, float]
 
@@ -339,13 +340,17 @@ def run_on_text_chunked(self, s : str, chunk_size : int = 1500, prelude_file : O
 
 def main():
     parser = argparse.ArgumentParser()
+    parser.add_argument("-v", required=False, action='store_true', help="Display the version and exit")
     parser.add_argument("-p", required=False, help="Preset to use with compressor, higher values are slower but provide better compression")
     parser.add_argument("-e", choices=['zlib', 'lzma', 'brotli', 'ensemble'], help='Which compression engine to use: lzma, zlib, brotli, or an ensemble of all engines', default='lzma', required=False)
     group = parser.add_mutually_exclusive_group()
     group.add_argument("-s", help='Read from stdin until EOF is reached instead of from a file', required=False, action='store_true')
     group.add_argument("sample_files", nargs='*', help='Text file(s) containing the sample to classify', default="")
     args = parser.parse_args()
     engine = 'lzma'
+    if args.v:
+        print(__version__)
+        return
     if args.e:
         if args.e == 'lzma':
             engine = CompressionEngine.LZMA