NW|26-JUI-SDC|Ahmad Hmedan|Sprint 4 |Implement-shell-tools-python

implement-shell-tools/cat/cat.py

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+import argparse
+
+parser = argparse.ArgumentParser(
+    prog="cat",
+    description="implement cat",
+)
+
+parser.add_argument("paths", nargs="+", help="The file to process")
+parser.add_argument("-n", action="store_true", help="Number all lines")
+parser.add_argument("-b", action="store_true", help="Number non-empty lines only")
+
+args = parser.parse_args()
+counter = 1
+
+for path in args.paths:
+    with open(path, "r") as f:
+        for line in f:
+            if args.n:
+                print(f"\t{counter} {line}", end="")
+                counter += 1
+            elif args.b:
+                if line.strip() != "":
+                    print(f"\t{counter} {line}", end="")
+                    counter += 1
+                else:
+                    print(f"\t {line}", end="")
+            else:
+                print(f" {line}", end="")

implement-shell-tools/ls/ls.py

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+import argparse
+from pathlib import Path
+
+parser = argparse.ArgumentParser(
+    prog="ls",
+    description="ls implementation",
+)
+
+parser.add_argument("path", nargs="?", help="The file to process", default=".")
+parser.add_argument(
+    "-1", "--one_per_line", action="store_true", help="one file per line"
+)
+parser.add_argument("-a", action="store_true", help="Show hidden files")
+
+
+args = parser.parse_args()
+
+path = Path(args.path)
+
+items = []
+for item in sorted(path.iterdir()):
+    if args.a or not item.name.startswith("."):
+        items.append(item.name)
+
+if args.one_per_line:
+    for name in items:
+        print(name)
+else:
+    print(" ".join(items))

implement-shell-tools/wc/wc.py

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+import argparse
+
+parser = argparse.ArgumentParser(
+    prog="wc", description="Count lines, words, and characters in one or more files."
+)
+
+parser.add_argument("-c", action="store_true", help="Count the number of characters.")
+parser.add_argument("-w", action="store_true", help="Count the number of words.")
+parser.add_argument("-l", action="store_true", help="Count the number of lines.")
+parser.add_argument("paths", nargs="+", help="Path(s) to the file(s) to process.")
+
+
+total_results = {}
+
+
+args = parser.parse_args()
+paths = args.paths
+no_flags = not args.c and not args.w and not args.l
+
+for path in paths:
+    with open(path, "r") as f:
+        content = f.read()
+
+    count_lines = len(content.splitlines())
+    count_words = len(content.split())
+    count_characters = len(content)
+
+    results = {}
+
+    if no_flags or args.l:
+        results["count_lines"] = count_lines
+
+    if no_flags or args.w:
+        results["count_words"] = count_words
+
+    if no_flags or args.c:
+        results["count_characters"] = count_characters
+
+    for key, value in results.items():
+        total_results[key] = total_results.get(key, 0) + value
+
+    print(" ".join(map(str, results.values())), path)
+
+if len(paths) > 1:
+    print(" ".join(map(str, total_results.values())), "total")