pungi-koji: Port to argparse

Optparse is deprecated since Python 2.7, long live argparse.

This also allows us to remove some of the manual error checking and make
the library check required or conflicting options.

Signed-off-by: Lubomír Sedlář <lsedlar@redhat.com>

bin/pungi-koji

@@ -4,7 +4,7 @@
 
 import os
 import sys
-import optparse
+import argparse
 import logging
 import locale
 import datetime
@@ -31,29 +31,35 @@ COMPOSE = None
 def main():
     global COMPOSE
 
-    parser = optparse.OptionParser()
+    parser = argparse.ArgumentParser()
-    parser.add_option(
+    group = parser.add_mutually_exclusive_group(required=True)
+    group.add_argument(
         "--target-dir",
         metavar="PATH",
         help="a compose is created under this directory",
     )
-    parser.add_option(
+    group.add_argument(
+        "--compose-dir",
+        metavar="PATH",
+        help="reuse an existing compose directory (DANGEROUS!)",
+    )
+    parser.add_argument(
         "--label",
         help="specify compose label (example: Snapshot-1.0); required for production composes"
     )
-    parser.add_option(
+    parser.add_argument(
         "--no-label",
         action="store_true",
         default=False,
         help="make a production compose without label"
     )
-    parser.add_option(
+    parser.add_argument(
         "--supported",
         action="store_true",
         default=False,
         help="set supported flag on media (automatically on for 'RC-x.y' labels)"
     )
-    parser.add_option(
+    parser.add_argument(
         "--old-composes",
         metavar="PATH",
         dest="old_composes",
@@ -61,93 +67,89 @@ def main():
         action="append",
         help="Path to directory with old composes. Reuse an existing repodata from the most recent compose.",
     )
-    parser.add_option(
+    parser.add_argument(
-        "--compose-dir",
-        metavar="PATH",
-        help="reuse an existing compose directory (DANGEROUS!)",
-    )
-    parser.add_option(
         "--debug-mode",
         action="store_true",
         default=False,
         help="run pungi in DEBUG mode (DANGEROUS!)",
     )
-    parser.add_option(
+    parser.add_argument(
         "--config",
-        help="Config file"
+        help="Config file",
+        required=True
     )
-    parser.add_option(
+    parser.add_argument(
         "--skip-phase",
         metavar="PHASE",
         action="append",
         default=[],
         help="skip a compose phase",
     )
-    parser.add_option(
+    parser.add_argument(
         "--just-phase",
         metavar="PHASE",
         action="append",
         default=[],
         help="run only a specified compose phase",
     )
-    parser.add_option(
+    parser.add_argument(
         "--nightly",
         action="store_const",
         const="nightly",
         dest="compose_type",
         help="make a nightly compose",
     )
-    parser.add_option(
+    parser.add_argument(
         "--test",
         action="store_const",
         const="test",
         dest="compose_type",
         help="make a test compose",
     )
-    parser.add_option(
+    parser.add_argument(
         "--ci",
         action="store_const",
         const="ci",
         dest="compose_type",
         help="make a CI compose",
     )
-    parser.add_option(
+    parser.add_argument(
         "--koji-event",
         metavar="ID",
-        type="int",
+        type=int,
         help="specify a koji event for populating package set",
     )
-    parser.add_option(
+    parser.add_argument(
         "--version",
         action="store_true",
         help="output version information and exit",
     )
-    parser.add_option(
+    parser.add_argument(
         "--notification-script",
         help="script for sending progress notification messages"
     )
-    parser.add_option(
+    parser.add_argument(
         "--no-latest-link",
         action="store_true",
         default=False,
         dest="no_latest_link",
         help="don't create latest symbol link to this compose"
     )
-    parser.add_option(
+    parser.add_argument(
         "--latest-link-status",
         metavar="STATUS",
         action="append",
         default=[],
         help="only create latest symbol link to this compose when compose status matches specified status",
     )
-    parser.add_option(
+    parser.add_argument(
         "--quiet",
         action="store_true",
         default=False,
         help="quiet mode, don't print log on screen"
     )
 
-    opts, args = parser.parse_args()
+    opts = parser.parse_args()
     import pungi.notifier
     notifier = pungi.notifier.PungiNotifier(opts.notification_script)
 
@@ -164,12 +166,6 @@ def main():
         print("pungi %s" % get_full_version())
         sys.exit(0)
 
-    if opts.target_dir and opts.compose_dir:
-        abort("cannot specify --target-dir and --compose-dir at once")
-
-    if not opts.target_dir and not opts.compose_dir:
-        abort("please specify a target directory")
-
     if opts.target_dir and not opts.compose_dir:
         opts.target_dir = os.path.abspath(opts.target_dir)
         if not os.path.isdir(opts.target_dir):
@@ -183,8 +179,6 @@ def main():
     if compose_type == "production" and not opts.label and not opts.no_label:
         abort("must specify label for a production compose")
 
-    if not opts.config:
-        abort("please specify a config")
     opts.config = os.path.abspath(opts.config)
 
     create_latest_link = not opts.no_latest_link