Mercurial > hgrepos > Python > apps > py-cutils

comparison cutils/treesum.py @ 147:ed35f3c9e2b5

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Add also a "help" subcommand to "treesum". It can show the global general help or the help message for a given subcommand.
author Franz Glasner <fzglas.hg@dom66.de>
date Fri, 03 Jan 2025 16:51:26 +0100
parents 7d8df8311e3b
children 17d6e760143f
comparison
equal deleted inserted replaced
146:7d8df8311e3b 147:ed35f3c9e2b5
117 help="Alias for \"generate\"", 117 help="Alias for \"generate\"",
118 description="Generate checksums for directory trees. " 118 description="Generate checksums for directory trees. "
119 "This is an alias to \"generate\".") 119 "This is an alias to \"generate\".")
120 _populate_generate_arguments(genparser2) 120 _populate_generate_arguments(genparser2)
121 121
122 subparsers.add_parser( 122 hparser = subparsers.add_parser(
123 "help",
124 help="Show this help message or a subcommand's help and exit",
125 description="Show this help message or a subcommand's help and exit.")
126 hparser.add_argument("help_command", nargs='?', metavar="COMMAND")
127
128 vparser = subparsers.add_parser(
123 "version", 129 "version",
124 help="Show the program's version number and exit", 130 help="Show the program's version number and exit",
125 description="Show the program's version number and exit.") 131 description="Show the program's version number and exit.")
126 132
127 # Parse leniently to just check for "version" 133 # Parse leniently to just check for "version" and/or help
128 opts, _dummy = parser.parse_known_args(args=argv) 134 opts, _dummy = parser.parse_known_args(args=argv)
129 135
130 if opts.subcommand == "version": 136 if opts.subcommand == "version":
131 print("%s (rv:%s)" % (__version__, __revision__), 137 print("%s (rv:%s)" % (__version__, __revision__),
132 file=sys.stdout) 138 file=sys.stdout)
139 sys.exit(0)
140 if opts.subcommand == "help":
141 if not opts.help_command:
142 parser.print_help()
143 else:
144 if opts.help_command == "generate":
145 genparser.print_help()
146 elif opts.help_command == "gen":
147 genparser2.print_help()
148 elif opts.help_command == "version":
149 vparser.print_help()
150 elif opts.help_command == "help":
151 hparser.print_help()
152 else:
153 parser.print_help()
133 sys.exit(0) 154 sys.exit(0)
134 155
135 # Reparse strictly 156 # Reparse strictly
136 opts = parser.parse_args(args=argv) 157 opts = parser.parse_args(args=argv)
137 158