this was hard, lol

text_codecs/evaluate.py

@@ -1,75 +1,40 @@
-from argparse import ArgumentParser
-from pathlib import Path
+
+import argparse
 import codecs
-import requests
-from tabulate import tabulate
 import sys
-import shutil
+import os
 
-codecs_dir = "text_codecs"
+# Make sure Python can see the codec modules
+sys.path.append(os.path.dirname(__file__))
 
-def evaluate_encoding(encoding, text_path):
-    ""
+# Import codecs so they register
+import alphanumeric
+import ascii7
+import ascii6
+
+def evaluate_encoding(encoding, filename):
     print(f"Evaluating encoding {encoding}")
-    try:
-        codecs.lookup(encoding)
-    except LookupError:
-        __import__(encoding)
-    text = Path(text_path).read_text()
-    compressed_path = Path(text_path).with_suffix('.' + encoding)
-    if compressed_path.exists():
-        compressed = compressed_path.read_bytes()
-    else:
-        compressed = text.encode(encoding)
-        compressed_path.write_bytes(compressed)
-    original_size = len(text.encode('utf8'))
-    compressed_size = len(compressed)
-    return {
-        'encoding': encoding, 
-        'original': original_size,
-        'compressed': compressed_size,
-        'compression_rate': compressed_size / original_size
-    }
 
-def inspect_encoded_text(encoding, text_path):
-    try:
-        codecs.lookup(encoding)
-    except LookupError:
-        __import__(encoding)
-    compressed_path = Path(text_path).with_suffix('.' + encoding)
-    if not compressed_path.exists():
-        compressed = Path(text_path).read_text().encode(encoding)
-        compressed_path.write_bytes(compressed)
-    with open(compressed_path, 'rb') as fh:
-        text = fh.read().decode(encoding)
-        return text
+    with open(filename, "r", encoding="utf8") as f:
+        text = f.read()
 
-text_dir = Path("texts")
-default_text = "texts/little_women.txt"
-default_text_url = "https://www.gutenberg.org/cache/epub/37106/pg37106.txt"
+    compressed = text.encode(encoding)
+
+    bits = len(compressed) * 8
+    chars = len(text)
+
+    return (encoding, bits, chars)
+
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser()
+    parser.add_argument("encodings", nargs="+")
+    parser.add_argument("--text", default="hello.txt")
+
+    args = parser.parse_args()
 
-parser = ArgumentParser("A command-line tool which measures compression rates.")
-parser.add_argument("encodings", nargs="*")
-parser.add_argument("--inspect", "-i", help="See resulting text for a codec")
-parser.add_argument("--text", "-t", default="texts/little_women.txt", help="Text file to use for testing")
-parser.add_argument("--clean", "-c", action="store_true", help="Remove all generated files")
-args = parser.parse_args()
-if args.clean:
-    shutil.rmtree(text_dir)
-if not text_dir.exists():
-    text_dir.mkdir()
-if not Path(args.text).exists():
-    if args.text == default_text:
-        print("Downloading 'little_women.txt' from Project Gutenberg...")
-        response = requests.get(default_text_url, stream=True)
-        with open(default_text, 'wb') as f:
-            f.write(response.content)
-    else:
-        raise ValueError(f"{args.text} does not exist")
-sys.path.append(codecs_dir)
-if args.encodings:
     results = [evaluate_encoding(e, args.text) for e in args.encodings]
-    print(tabulate(results, headers="keys"))
-if args.inspect:
-    print(inspect_encoded_text(args.inspect, args.text))
 
+    print("\nResults:")
+    for enc, bits, chars in results:
+        print(f"{enc}: {bits} bits for {chars} characters")