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cli.py
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cli.py
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# stdlib.
from argparse import ArgumentParser, Namespace
from os.path import dirname
from sys import argv, exit
class _MODES:
EDIT_CONFIG: str = "edit-config"
AUTO_SET: str = "autolist-set"
AUTO_RUN: str = "autolist-run"
CMD: str = "cmd"
class _COMMANDS:
EXIT: str = "exit"
AUTOLIST: str = "autolist"
SCRATCH: str = "scratch"
_CONFIG_FILEPATH: str = dirname(__file__) + "/"
def _parse_args(args: list) -> Namespace:
parser: ArgumentParser = ArgumentParser()
modes = parser.add_subparsers(dest="mode")
return parser.parse_args(args)
def _process_edit_config():
pass
def _process_auto_set():
pass
def _process_auto_run():
pass
def _process_cmd():
pass
def _build_cmd_parser() -> ArgumentParser:
parser: ArgumentParser = ArgumentParser(add_help=False)
commands = parser.add_subparsers(dest="command")
# ---- exit cmd. ---- #
exit_cmd: ArgumentParser = commands.add_parser(
_COMMANDS.EXIT,
add_help=False
)
return parser
if __name__ == "__main__":
args: Namespace = _parse_args(argv[1:])
# delegate to required mode.
if args.mode == _MODES.EDIT_CONFIG: _process_edit_config()
elif args.mode == _MODES.AUTO_SET: _process_auto_set()
elif args.mode == _MODES.AUTO_RUN: _process_auto_run()
elif args.mode == _MODES.CMD: _process_cmd()
# command loop
exit(0)
# ---- autolist cmd. ---- #
autolist_cmd: ArgumentParser = commands.add_parser(
_COMMANDS.AUTOLIST,
help="set the filepath to record scratch commands into",
add_help=False
)
# ---- edit-cfg cmd. ---- #
edit_cfg_cmd: ArgumentParser = commands.add_parser(
_COMMANDS.EDIT_CONFIG,
help="edit the configuration file",
add_help=False
)
# ---- scratch cmd. ---- #
scratch_cmd: ArgumentParser = commands.add_parser(
_COMMANDS.SCRATCH,
help="scrape one or more urls",
add_help=False
)
scratch_cmds = scratch_cmd.add_subparsers(dest="scratch_cmd")
scratch_cmd.add_argument(
"--record",
action="store_true",
help="record the command in the autolist"
)
scratch_cmd.add_argument(
"--generic",
action="store_true",
help="use the generic html scraper"
)
scratch_cmd.add_argument(
"-e",
nargs="+",
choices=_gather_scratches(),
required=False,
help="use a certain scraper explicitly",
dest="explicit"
)
scratch_cmd.add_argument(
"urls",
nargs="+",
help="one or more urls to scrape"
)
# ---- scratch::list. ---- #
scratch_cmd_list: ArgumentParser = scratch_cmds.add_parser(
"list",
help="print a list of scrapers",
add_help=False
)
# ---- scratch::help. ---- #
scratch_cmd_help: ArgumentParser = scratch_cmds.add_parser(
"help",
help="print usage for a scraper",
prefix_chars="/",
add_help=False
)
scratch_cmd_help.add_argument(
"name",
help="scraper name to provide help for"
)
def _process_cmd_mode():
parser: ArgumentParser = _build_cmd_parser()
while True:
cmd: list = input("cmd:").split()
parsed: Namespace = parser.parse_args(cmd)
#print("input:", parsed)
# delegate to required mode.
if parsed.command == _COMMANDS.EXIT:
break
elif parsed.command == _COMMANDS.AUTOLIST: _process_autolist_command()
elif parsed.command == _COMMANDS.EDIT_CONFIG: _process_edit_config_command()
elif parsed.command == _COMMANDS.SCRATCH: _process_scratch_command()
def _parse_args(args: list) -> Namespace:
cmd_mode = modes.add_parser(_MODES.CMD)
auto_mode = modes.add_parser(_MODES.AUTO)
auto_mode.add_argument("path", help="filepath to an autolist")