First version, seems to work

lib/args.py

@@ -0,0 +1,72 @@
+import re
+import sys
+
+isNumber = re.compile('^[0-9]+$')
+
+class Options:
+    loadFeed = True
+    downloadEpisodes = True
+    generate = True
+    filter = None
+    episodes = 'new'
+    numEpisodes = 1
+
+def outputHelp():
+    print("Usage: ./process [args] [filter [age] [episodes]]")
+    print("")
+    print("args:")
+    print("--help")
+    print("    Show this help information")
+    print("--no-feed, --skip-feed")
+    print("    Skip the initial step of downloading the RSS feeds")
+    print("--no-download, --skip-download")
+    print("    Skip downloading podcast episodes")
+    print("--no-gen, --skip-gen")
+    print("    Skip generating transcripts and translations of podcast episodes")
+    print("")
+    print("filter:")
+    print("    If specified, only configured podcasts which match the filter will be processed")
+    print("    A filter of 'pieds sur' would match 'Les Pieds sur terre'")
+    print("")
+    print("age:")
+    print("    'new' (default), or 'old'")
+    print("    Fetch the newest or oldest episode(s) for the matching podcast(s)")
+    print("")
+    print("episodes:")
+    print("    1 by default")
+    print("    The number of episode(s) to fetch for the matching podcast(s)")
+    print("")
+    print("Examples:")
+    print("    ./process --help")
+    print("    ./process --no-feed --skip-download")
+    print("        Only process previously downloaded episodes (useful e.g. if Whisper ran out of memory,")
+    print("        or a podcast wasn't configured to translate episodes)")
+    print("    ./process 'the few' old 3")
+    print("        Download and process the first 3 episodes of 'The Few Who Do'")
+
+def read():
+    opts = Options()
+    for arg in sys.argv[1:]:
+        if arg == 'help' or arg =='--help':
+            outputHelp()
+            sys.exit(0)
+        elif arg == '--no-feed' or arg == '--skip-feed':
+            opts.loadFeed = False
+        elif arg == '--no-download' or arg == '--skip-download':
+            opts.downloadEpisodes = False
+        elif arg == "--no-gen" or arg == "--skip-gen":
+            opts.generate = False
+        elif arg == 'new':
+            opts.episodes = 'new'
+        elif arg == 'old':
+            opts.episodes = 'old'
+        elif isNumber.match(arg):
+            opts.numEpisodes = int(arg)
+        elif opts.filter == None:
+            opts.filter = arg.lower()
+        else:
+            print(f"Unrecognised argument: {arg}")
+            print("")
+            outputHelp()
+            sys.exit(1)
+    return opts