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Configuration: Improve --help output throughout.

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This commit is contained in:
Brett Smith 2017-05-17 15:34:51 -04:00
parent 5fb01151d1
commit 63b0ad3c76
1 changed files with 32 additions and 20 deletions
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52
oxrlib/config.py
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@ -57,7 +57,11 @@ class Configuration:
)
subparsers = prog_parser.add_subparsers()
hist_parser = subparsers.add_parser('historical', aliases=['hist'])
hist_parser = subparsers.add_parser(
'historical', aliases=['hist'],
usage='%(prog)s historical YYYY-MM-DD [[amount] code] [[in] code]',
help="Show a currency conversion or rate from a past date",
)
hist_parser.set_defaults(
command='historical',
amount=None,
@ -70,12 +74,24 @@ class Configuration:
)
hist_parser.add_argument(
'date',
type=date_from('%Y-%m-%d'), metavar='YYYY-MM-DD',
type=date_from('%Y-%m-%d'),
help="Use rates from this date, in YYYY-MM-DD format"
)
hist_parser.add_argument(
'remainder',
nargs=argparse.REMAINDER,
'word1', nargs='?', metavar='first code',
help="Convert or show rates from this currency, in three-letter code format. "
"If not specified, show all rates on the given date.",
)
hist_parser.add_argument(
'word2', nargs='?', metavar='amount',
help="Convert this amount of currency. If not specified, show rates.",
)
hist_parser.add_argument(
'word3', nargs='?', metavar='second code',
help="Convert to this currency, in three-letter code format. "
"If not specified, defaults to the base currency.",
)
hist_parser.add_argument('word4', nargs='?', help=argparse.SUPPRESS)
return prog_parser
@ -101,25 +117,21 @@ class Configuration:
if self.args.base is None:
self.args.base = self.conffile.get('Historical', 'base')
self.args.to_currency = self.args.base
remain_len = len(self.args.remainder)
if (remain_len > 3) and (self.args.remainder[2].lower() in self.PREPOSITIONS):
del self.args.remainder[2]
remain_len -= 1
if remain_len == 0:
if self.args.word4 and (self.args.word3.lower() in self.PREPOSITIONS):
self.args.word3 = self.args.word4
if self.args.word1 is None:
pass
elif remain_len == 1:
elif self.args.word2 is None:
self.args.from_currency = self._convert_or_error(
currency_code, self.args.remainder[0])
elif remain_len < 4:
self.args.amount = self._convert_or_error(
decimal.Decimal, self.args.remainder[0])
self.args.from_currency = self._convert_or_error(
currency_code, self.args.remainder[1])
if remain_len == 3:
self.args.to_currency = self._convert_or_error(
currency_code, self.args.remainder[2])
currency_code, self.args.word1)
else:
self.error("too many arguments")
self.args.amount = self._convert_or_error(
decimal.Decimal, self.args.word1)
self.args.from_currency = self._convert_or_error(
currency_code, self.args.word2)
if self.args.word3 is not None:
self.args.to_currency = self._convert_or_error(
currency_code, self.args.word3 or self.args.base)
def _build_cache_loader(self):
kwargs = dict(self.conffile.items('Cache'))