582 lines
19 KiB
Python
582 lines
19 KiB
Python
|
"""Pythonic command-line interface parser that will make you smile.
|
||
|
|
|
||
|
|
* http://docopt.org
|
||
|
|
* Repository and issue-tracker: https://github.com/docopt/docopt
|
||
|
|
* Licensed under terms of MIT license (see LICENSE-MIT)
|
||
|
|
* Copyright (c) 2013 Vladimir Keleshev, vladimir@keleshev.com
|
||
|
|
|
||
|
|
"""
|
||
|
|
import sys
|
||
|
|
import re
|
||
|
|
|
||
|
|
|
||
|
|
__all__ = ['docopt']
|
||
|
|
__version__ = '0.6.1'
|
||
|
|
|
||
|
|
|
||
|
|
class DocoptLanguageError(Exception):
|
||
|
|
|
||
|
|
"""Error in construction of usage-message by developer."""
|
||
|
|
|
||
|
|
|
||
|
|
class DocoptExit(SystemExit):
|
||
|
|
|
||
|
|
"""Exit in case user invoked program with incorrect arguments."""
|
||
|
|
|
||
|
|
usage = ''
|
||
|
|
|
||
|
|
def __init__(self, message=''):
|
||
|
|
SystemExit.__init__(self, (message + '\n' + self.usage).strip())
|
||
|
|
|
||
|
|
|
||
|
|
class Pattern(object):
|
||
|
|
|
||
|
|
def __eq__(self, other):
|
||
|
|
return repr(self) == repr(other)
|
||
|
|
|
||
|
|
def __hash__(self):
|
||
|
|
return hash(repr(self))
|
||
|
|
|
||
|
|
def fix(self):
|
||
|
|
self.fix_identities()
|
||
|
|
self.fix_repeating_arguments()
|
||
|
|
return self
|
||
|
|
|
||
|
|
def fix_identities(self, uniq=None):
|
||
|
|
"""Make pattern-tree tips point to same object if they are equal."""
|
||
|
|
if not hasattr(self, 'children'):
|
||
|
|
return self
|
||
|
|
uniq = list(set(self.flat())) if uniq is None else uniq
|
||
|
|
for i, child in enumerate(self.children):
|
||
|
|
if not hasattr(child, 'children'):
|
||
|
|
assert child in uniq
|
||
|
|
self.children[i] = uniq[uniq.index(child)]
|
||
|
|
else:
|
||
|
|
child.fix_identities(uniq)
|
||
|
|
|
||
|
|
def fix_repeating_arguments(self):
|
||
|
|
"""Fix elements that should accumulate/increment values."""
|
||
|
|
either = [list(child.children) for child in transform(self).children]
|
||
|
|
for case in either:
|
||
|
|
for e in [child for child in case if case.count(child) > 1]:
|
||
|
|
if type(e) is Argument or type(e) is Option and e.argcount:
|
||
|
|
if e.value is None:
|
||
|
|
e.value = []
|
||
|
|
elif type(e.value) is not list:
|
||
|
|
e.value = e.value.split()
|
||
|
|
if type(e) is Command or type(e) is Option and e.argcount == 0:
|
||
|
|
e.value = 0
|
||
|
|
return self
|
||
|
|
|
||
|
|
|
||
|
|
def transform(pattern):
|
||
|
|
"""Expand pattern into an (almost) equivalent one, but with single Either.
|
||
|
|
|
||
|
|
Example: ((-a | -b) (-c | -d)) => (-a -c | -a -d | -b -c | -b -d)
|
||
|
|
Quirks: [-a] => (-a), (-a...) => (-a -a)
|
||
|
|
|
||
|
|
"""
|
||
|
|
result = []
|
||
|
|
groups = [[pattern]]
|
||
|
|
while groups:
|
||
|
|
children = groups.pop(0)
|
||
|
|
parents = [Required, Optional, OptionsShortcut, Either, OneOrMore]
|
||
|
|
if any(t in map(type, children) for t in parents):
|
||
|
|
child = [c for c in children if type(c) in parents][0]
|
||
|
|
children.remove(child)
|
||
|
|
if type(child) is Either:
|
||
|
|
for c in child.children:
|
||
|
|
groups.append([c] + children)
|
||
|
|
elif type(child) is OneOrMore:
|
||
|
|
groups.append(child.children * 2 + children)
|
||
|
|
else:
|
||
|
|
groups.append(child.children + children)
|
||
|
|
else:
|
||
|
|
result.append(children)
|
||
|
|
return Either(*[Required(*e) for e in result])
|
||
|
|
|
||
|
|
|
||
|
|
class LeafPattern(Pattern):
|
||
|
|
|
||
|
|
"""Leaf/terminal node of a pattern tree."""
|
||
|
|
|
||
|
|
def __init__(self, name, value=None):
|
||
|
|
self.name, self.value = name, value
|
||
|
|
|
||
|
|
def __repr__(self):
|
||
|
|
return '%s(%r, %r)' % (self.__class__.__name__, self.name, self.value)
|
||
|
|
|
||
|
|
def flat(self, *types):
|
||
|
|
return [self] if not types or type(self) in types else []
|
||
|
|
|
||
|
|
def match(self, left, collected=None):
|
||
|
|
collected = [] if collected is None else collected
|
||
|
|
pos, match = self.single_match(left)
|
||
|
|
if match is None:
|
||
|
|
return False, left, collected
|
||
|
|
left_ = left[:pos] + left[pos + 1:]
|
||
|
|
same_name = [a for a in collected if a.name == self.name]
|
||
|
|
if type(self.value) in (int, list):
|
||
|
|
if type(self.value) is int:
|
||
|
|
increment = 1
|
||
|
|
else:
|
||
|
|
increment = ([match.value] if type(match.value) is str
|
||
|
|
else match.value)
|
||
|
|
if not same_name:
|
||
|
|
match.value = increment
|
||
|
|
return True, left_, collected + [match]
|
||
|
|
same_name[0].value += increment
|
||
|
|
return True, left_, collected
|
||
|
|
return True, left_, collected + [match]
|
||
|
|
|
||
|
|
|
||
|
|
class BranchPattern(Pattern):
|
||
|
|
|
||
|
|
"""Branch/inner node of a pattern tree."""
|
||
|
|
|
||
|
|
def __init__(self, *children):
|
||
|
|
self.children = list(children)
|
||
|
|
|
||
|
|
def __repr__(self):
|
||
|
|
return '%s(%s)' % (self.__class__.__name__,
|
||
|
|
', '.join(repr(a) for a in self.children))
|
||
|
|
|
||
|
|
def flat(self, *types):
|
||
|
|
if type(self) in types:
|
||
|
|
return [self]
|
||
|
|
return sum([child.flat(*types) for child in self.children], [])
|
||
|
|
|
||
|
|
|
||
|
|
class Argument(LeafPattern):
|
||
|
|
|
||
|
|
def single_match(self, left):
|
||
|
|
for n, pattern in enumerate(left):
|
||
|
|
if type(pattern) is Argument:
|
||
|
|
return n, Argument(self.name, pattern.value)
|
||
|
|
return None, None
|
||
|
|
|
||
|
|
@classmethod
|
||
|
|
def parse(class_, source):
|
||
|
|
name = re.findall('(<\S*?>)', source)[0]
|
||
|
|
value = re.findall('\[default: (.*)\]', source, flags=re.I)
|
||
|
|
return class_(name, value[0] if value else None)
|
||
|
|
|
||
|
|
|
||
|
|
class Command(Argument):
|
||
|
|
|
||
|
|
def __init__(self, name, value=False):
|
||
|
|
self.name, self.value = name, value
|
||
|
|
|
||
|
|
def single_match(self, left):
|
||
|
|
for n, pattern in enumerate(left):
|
||
|
|
if type(pattern) is Argument:
|
||
|
|
if pattern.value == self.name:
|
||
|
|
return n, Command(self.name, True)
|
||
|
|
else:
|
||
|
|
break
|
||
|
|
return None, None
|
||
|
|
|
||
|
|
|
||
|
|
class Option(LeafPattern):
|
||
|
|
|
||
|
|
def __init__(self, short=None, long=None, argcount=0, value=False):
|
||
|
|
assert argcount in (0, 1)
|
||
|
|
self.short, self.long, self.argcount = short, long, argcount
|
||
|
|
self.value = None if value is False and argcount else value
|
||
|
|
|
||
|
|
@classmethod
|
||
|
|
def parse(class_, option_description):
|
||
|
|
short, long, argcount, value = None, None, 0, False
|
||
|
|
options, _, description = option_description.strip().partition(' ')
|
||
|
|
options = options.replace(',', ' ').replace('=', ' ')
|
||
|
|
for s in options.split():
|
||
|
|
if s.startswith('--'):
|
||
|
|
long = s
|
||
|
|
elif s.startswith('-'):
|
||
|
|
short = s
|
||
|
|
else:
|
||
|
|
argcount = 1
|
||
|
|
if argcount:
|
||
|
|
matched = re.findall('\[default: (.*)\]', description, flags=re.I)
|
||
|
|
value = matched[0] if matched else None
|
||
|
|
return class_(short, long, argcount, value)
|
||
|
|
|
||
|
|
def single_match(self, left):
|
||
|
|
for n, pattern in enumerate(left):
|
||
|
|
if self.name == pattern.name:
|
||
|
|
return n, pattern
|
||
|
|
return None, None
|
||
|
|
|
||
|
|
@property
|
||
|
|
def name(self):
|
||
|
|
return self.long or self.short
|
||
|
|
|
||
|
|
def __repr__(self):
|
||
|
|
return 'Option(%r, %r, %r, %r)' % (self.short, self.long,
|
||
|
|
self.argcount, self.value)
|
||
|
|
|
||
|
|
|
||
|
|
class Required(BranchPattern):
|
||
|
|
|
||
|
|
def match(self, left, collected=None):
|
||
|
|
collected = [] if collected is None else collected
|
||
|
|
l = left
|
||
|
|
c = collected
|
||
|
|
for pattern in self.children:
|
||
|
|
matched, l, c = pattern.match(l, c)
|
||
|
|
if not matched:
|
||
|
|
return False, left, collected
|
||
|
|
return True, l, c
|
||
|
|
|
||
|
|
|
||
|
|
class Optional(BranchPattern):
|
||
|
|
|
||
|
|
def match(self, left, collected=None):
|
||
|
|
collected = [] if collected is None else collected
|
||
|
|
for pattern in self.children:
|
||
|
|
m, left, collected = pattern.match(left, collected)
|
||
|
|
return True, left, collected
|
||
|
|
|
||
|
|
|
||
|
|
class OptionsShortcut(Optional):
|
||
|
|
|
||
|
|
"""Marker/placeholder for [options] shortcut."""
|
||
|
|
|
||
|
|
|
||
|
|
class OneOrMore(BranchPattern):
|
||
|
|
|
||
|
|
def match(self, left, collected=None):
|
||
|
|
assert len(self.children) == 1
|
||
|
|
collected = [] if collected is None else collected
|
||
|
|
l = left
|
||
|
|
c = collected
|
||
|
|
l_ = None
|
||
|
|
matched = True
|
||
|
|
times = 0
|
||
|
|
while matched:
|
||
|
|
# could it be that something didn't match but changed l or c?
|
||
|
|
matched, l, c = self.children[0].match(l, c)
|
||
|
|
times += 1 if matched else 0
|
||
|
|
if l_ == l:
|
||
|
|
break
|
||
|
|
l_ = l
|
||
|
|
if times >= 1:
|
||
|
|
return True, l, c
|
||
|
|
return False, left, collected
|
||
|
|
|
||
|
|
|
||
|
|
class Either(BranchPattern):
|
||
|
|
|
||
|
|
def match(self, left, collected=None):
|
||
|
|
collected = [] if collected is None else collected
|
||
|
|
outcomes = []
|
||
|
|
for pattern in self.children:
|
||
|
|
matched, _, _ = outcome = pattern.match(left, collected)
|
||
|
|
if matched:
|
||
|
|
outcomes.append(outcome)
|
||
|
|
if outcomes:
|
||
|
|
return min(outcomes, key=lambda outcome: len(outcome[1]))
|
||
|
|
return False, left, collected
|
||
|
|
|
||
|
|
|
||
|
|
class Tokens(list):
|
||
|
|
|
||
|
|
def __init__(self, source, error=DocoptExit):
|
||
|
|
self += source.split() if hasattr(source, 'split') else source
|
||
|
|
self.error = error
|
||
|
|
|
||
|
|
@staticmethod
|
||
|
|
def from_pattern(source):
|
||
|
|
source = re.sub(r'([\[\]\(\)\|]|\.\.\.)', r' \1 ', source)
|
||
|
|
source = [s for s in re.split('\s+|(\S*<.*?>)', source) if s]
|
||
|
|
return Tokens(source, error=DocoptLanguageError)
|
||
|
|
|
||
|
|
def move(self):
|
||
|
|
return self.pop(0) if len(self) else None
|
||
|
|
|
||
|
|
def current(self):
|
||
|
|
return self[0] if len(self) else None
|
||
|
|
|
||
|
|
|
||
|
|
def parse_long(tokens, options):
|
||
|
|
"""long ::= '--' chars [ ( ' ' | '=' ) chars ] ;"""
|
||
|
|
long, eq, value = tokens.move().partition('=')
|
||
|
|
assert long.startswith('--')
|
||
|
|
value = None if eq == value == '' else value
|
||
|
|
similar = [o for o in options if o.long == long]
|
||
|
|
if tokens.error is DocoptExit and similar == []: # if no exact match
|
||
|
|
similar = [o for o in options if o.long and o.long.startswith(long)]
|
||
|
|
if len(similar) > 1: # might be simply specified ambiguously 2+ times?
|
||
|
|
raise tokens.error('%s is not a unique prefix: %s?' %
|
||
|
|
(long, ', '.join(o.long for o in similar)))
|
||
|
|
elif len(similar) < 1:
|
||
|
|
argcount = 1 if eq == '=' else 0
|
||
|
|
o = Option(None, long, argcount)
|
||
|
|
options.append(o)
|
||
|
|
if tokens.error is DocoptExit:
|
||
|
|
o = Option(None, long, argcount, value if argcount else True)
|
||
|
|
else:
|
||
|
|
o = Option(similar[0].short, similar[0].long,
|
||
|
|
similar[0].argcount, similar[0].value)
|
||
|
|
if o.argcount == 0:
|
||
|
|
if value is not None:
|
||
|
|
raise tokens.error('%s must not have an argument' % o.long)
|
||
|
|
else:
|
||
|
|
if value is None:
|
||
|
|
if tokens.current() in [None, '--']:
|
||
|
|
raise tokens.error('%s requires argument' % o.long)
|
||
|
|
value = tokens.move()
|
||
|
|
if tokens.error is DocoptExit:
|
||
|
|
o.value = value if value is not None else True
|
||
|
|
return [o]
|
||
|
|
|
||
|
|
|
||
|
|
def parse_shorts(tokens, options):
|
||
|
|
"""shorts ::= '-' ( chars )* [ [ ' ' ] chars ] ;"""
|
||
|
|
token = tokens.move()
|
||
|
|
assert token.startswith('-') and not token.startswith('--')
|
||
|
|
left = token.lstrip('-')
|
||
|
|
parsed = []
|
||
|
|
while left != '':
|
||
|
|
short, left = '-' + left[0], left[1:]
|
||
|
|
similar = [o for o in options if o.short == short]
|
||
|
|
if len(similar) > 1:
|
||
|
|
raise tokens.error('%s is specified ambiguously %d times' %
|
||
|
|
(short, len(similar)))
|
||
|
|
elif len(similar) < 1:
|
||
|
|
o = Option(short, None, 0)
|
||
|
|
options.append(o)
|
||
|
|
if tokens.error is DocoptExit:
|
||
|
|
o = Option(short, None, 0, True)
|
||
|
|
else: # why copying is necessary here?
|
||
|
|
o = Option(short, similar[0].long,
|
||
|
|
similar[0].argcount, similar[0].value)
|
||
|
|
value = None
|
||
|
|
if o.argcount != 0:
|
||
|
|
if left == '':
|
||
|
|
if tokens.current() in [None, '--']:
|
||
|
|
raise tokens.error('%s requires argument' % short)
|
||
|
|
value = tokens.move()
|
||
|
|
else:
|
||
|
|
value = left
|
||
|
|
left = ''
|
||
|
|
if tokens.error is DocoptExit:
|
||
|
|
o.value = value if value is not None else True
|
||
|
|
parsed.append(o)
|
||
|
|
return parsed
|
||
|
|
|
||
|
|
|
||
|
|
def parse_pattern(source, options):
|
||
|
|
tokens = Tokens.from_pattern(source)
|
||
|
|
result = parse_expr(tokens, options)
|
||
|
|
if tokens.current() is not None:
|
||
|
|
raise tokens.error('unexpected ending: %r' % ' '.join(tokens))
|
||
|
|
return Required(*result)
|
||
|
|
|
||
|
|
|
||
|
|
def parse_expr(tokens, options):
|
||
|
|
"""expr ::= seq ( '|' seq )* ;"""
|
||
|
|
seq = parse_seq(tokens, options)
|
||
|
|
if tokens.current() != '|':
|
||
|
|
return seq
|
||
|
|
result = [Required(*seq)] if len(seq) > 1 else seq
|
||
|
|
while tokens.current() == '|':
|
||
|
|
tokens.move()
|
||
|
|
seq = parse_seq(tokens, options)
|
||
|
|
result += [Required(*seq)] if len(seq) > 1 else seq
|
||
|
|
return [Either(*result)] if len(result) > 1 else result
|
||
|
|
|
||
|
|
|
||
|
|
def parse_seq(tokens, options):
|
||
|
|
"""seq ::= ( atom [ '...' ] )* ;"""
|
||
|
|
result = []
|
||
|
|
while tokens.current() not in [None, ']', ')', '|']:
|
||
|
|
atom = parse_atom(tokens, options)
|
||
|
|
if tokens.current() == '...':
|
||
|
|
atom = [OneOrMore(*atom)]
|
||
|
|
tokens.move()
|
||
|
|
result += atom
|
||
|
|
return result
|
||
|
|
|
||
|
|
|
||
|
|
def parse_atom(tokens, options):
|
||
|
|
"""atom ::= '(' expr ')' | '[' expr ']' | 'options'
|
||
|
|
| long | shorts | argument | command ;
|
||
|
|
"""
|
||
|
|
token = tokens.current()
|
||
|
|
result = []
|
||
|
|
if token in '([':
|
||
|
|
tokens.move()
|
||
|
|
matching, pattern = {'(': [')', Required], '[': [']', Optional]}[token]
|
||
|
|
result = pattern(*parse_expr(tokens, options))
|
||
|
|
if tokens.move() != matching:
|
||
|
|
raise tokens.error("unmatched '%s'" % token)
|
||
|
|
return [result]
|
||
|
|
elif token == 'options':
|
||
|
|
tokens.move()
|
||
|
|
return [OptionsShortcut()]
|
||
|
|
elif token.startswith('--') and token != '--':
|
||
|
|
return parse_long(tokens, options)
|
||
|
|
elif token.startswith('-') and token not in ('-', '--'):
|
||
|
|
return parse_shorts(tokens, options)
|
||
|
|
elif token.startswith('<') and token.endswith('>') or token.isupper():
|
||
|
|
return [Argument(tokens.move())]
|
||
|
|
else:
|
||
|
|
return [Command(tokens.move())]
|
||
|
|
|
||
|
|
|
||
|
|
def parse_argv(tokens, options, options_first=False):
|
||
|
|
"""Parse command-line argument vector.
|
||
|
|
|
||
|
|
If options_first:
|
||
|
|
argv ::= [ long | shorts ]* [ argument ]* [ '--' [ argument ]* ] ;
|
||
|
|
else:
|
||
|
|
argv ::= [ long | shorts | argument ]* [ '--' [ argument ]* ] ;
|
||
|
|
|
||
|
|
"""
|
||
|
|
parsed = []
|
||
|
|
while tokens.current() is not None:
|
||
|
|
if tokens.current() == '--':
|
||
|
|
return parsed + [Argument(None, v) for v in tokens]
|
||
|
|
elif tokens.current().startswith('--'):
|
||
|
|
parsed += parse_long(tokens, options)
|
||
|
|
elif tokens.current().startswith('-') and tokens.current() != '-':
|
||
|
|
parsed += parse_shorts(tokens, options)
|
||
|
|
elif options_first:
|
||
|
|
return parsed + [Argument(None, v) for v in tokens]
|
||
|
|
else:
|
||
|
|
parsed.append(Argument(None, tokens.move()))
|
||
|
|
return parsed
|
||
|
|
|
||
|
|
|
||
|
|
def parse_defaults(doc):
|
||
|
|
defaults = []
|
||
|
|
for s in parse_section('options:', doc):
|
||
|
|
# FIXME corner case "bla: options: --foo"
|
||
|
|
_, _, s = s.partition(':') # get rid of "options:"
|
||
|
|
split = re.split('\n[ \t]*(-\S+?)', '\n' + s)[1:]
|
||
|
|
split = [s1 + s2 for s1, s2 in zip(split[::2], split[1::2])]
|
||
|
|
options = [Option.parse(s) for s in split if s.startswith('-')]
|
||
|
|
defaults += options
|
||
|
|
return defaults
|
||
|
|
|
||
|
|
|
||
|
|
def parse_section(name, source):
|
||
|
|
pattern = re.compile('^([^\n]*' + name + '[^\n]*\n?(?:[ \t].*?(?:\n|$))*)',
|
||
|
|
re.IGNORECASE | re.MULTILINE)
|
||
|
|
return [s.strip() for s in pattern.findall(source)]
|
||
|
|
|
||
|
|
|
||
|
|
def formal_usage(section):
|
||
|
|
_, _, section = section.partition(':') # drop "usage:"
|
||
|
|
pu = section.split()
|
||
|
|
return '( ' + ' '.join(') | (' if s == pu[0] else s for s in pu[1:]) + ' )'
|
||
|
|
|
||
|
|
|
||
|
|
def extras(help, version, options, doc):
|
||
|
|
if help and any((o.name in ('-h', '--help')) and o.value for o in options):
|
||
|
|
print(doc.strip("\n"))
|
||
|
|
sys.exit()
|
||
|
|
if version and any(o.name == '--version' and o.value for o in options):
|
||
|
|
print(version)
|
||
|
|
sys.exit()
|
||
|
|
|
||
|
|
|
||
|
|
class Dict(dict):
|
||
|
|
def __repr__(self):
|
||
|
|
return '{%s}' % ',\n '.join('%r: %r' % i for i in sorted(self.items()))
|
||
|
|
|
||
|
|
|
||
|
|
def docopt(doc, argv=None, help=True, version=None, options_first=False):
|
||
|
|
"""Parse `argv` based on command-line interface described in `doc`.
|
||
|
|
|
||
|
|
`docopt` creates your command-line interface based on its
|
||
|
|
description that you pass as `doc`. Such description can contain
|
||
|
|
--options, <positional-argument>, commands, which could be
|
||
|
|
[optional], (required), (mutually | exclusive) or repeated...
|
||
|
|
|
||
|
|
Parameters
|
||
|
|
----------
|
||
|
|
doc : str
|
||
|
|
Description of your command-line interface.
|
||
|
|
argv : list of str, optional
|
||
|
|
Argument vector to be parsed. sys.argv[1:] is used if not
|
||
|
|
provided.
|
||
|
|
help : bool (default: True)
|
||
|
|
Set to False to disable automatic help on -h or --help
|
||
|
|
options.
|
||
|
|
version : any object
|
||
|
|
If passed, the object will be printed if --version is in
|
||
|
|
`argv`.
|
||
|
|
options_first : bool (default: False)
|
||
|
|
Set to True to require options precede positional arguments,
|
||
|
|
i.e. to forbid options and positional arguments intermix.
|
||
|
|
|
||
|
|
Returns
|
||
|
|
-------
|
||
|
|
args : dict
|
||
|
|
A dictionary, where keys are names of command-line elements
|
||
|
|
such as e.g. "--verbose" and "<path>", and values are the
|
||
|
|
parsed values of those elements.
|
||
|
|
|
||
|
|
Example
|
||
|
|
-------
|
||
|
|
>>> from docopt import docopt
|
||
|
|
>>> doc = '''
|
||
|
|
... Usage:
|
||
|
|
... my_program tcp <host> <port> [--timeout=<seconds>]
|
||
|
|
... my_program serial <port> [--baud=<n>] [--timeout=<seconds>]
|
||
|
|
... my_program (-h | --help | --version)
|
||
|
|
...
|
||
|
|
... Options:
|
||
|
|
... -h, --help Show this screen and exit.
|
||
|
|
... --baud=<n> Baudrate [default: 9600]
|
||
|
|
... '''
|
||
|
|
>>> argv = ['tcp', '127.0.0.1', '80', '--timeout', '30']
|
||
|
|
>>> docopt(doc, argv)
|
||
|
|
{'--baud': '9600',
|
||
|
|
'--help': False,
|
||
|
|
'--timeout': '30',
|
||
|
|
'--version': False,
|
||
|
|
'<host>': '127.0.0.1',
|
||
|
|
'<port>': '80',
|
||
|
|
'serial': False,
|
||
|
|
'tcp': True}
|
||
|
|
|
||
|
|
See also
|
||
|
|
--------
|
||
|
|
* For video introduction see http://docopt.org
|
||
|
|
* Full documentation is available in README.rst as well as online
|
||
|
|
at https://github.com/docopt/docopt#readme
|
||
|
|
|
||
|
|
"""
|
||
|
|
argv = sys.argv[1:] if argv is None else argv
|
||
|
|
|
||
|
|
usage_sections = parse_section('usage:', doc)
|
||
|
|
if len(usage_sections) == 0:
|
||
|
|
raise DocoptLanguageError('"usage:" (case-insensitive) not found.')
|
||
|
|
if len(usage_sections) > 1:
|
||
|
|
raise DocoptLanguageError('More than one "usage:" (case-insensitive).')
|
||
|
|
DocoptExit.usage = usage_sections[0]
|
||
|
|
|
||
|
|
options = parse_defaults(doc)
|
||
|
|
pattern = parse_pattern(formal_usage(DocoptExit.usage), options)
|
||
|
|
# [default] syntax for argument is disabled
|
||
|
|
#for a in pattern.flat(Argument):
|
||
|
|
# same_name = [d for d in arguments if d.name == a.name]
|
||
|
|
# if same_name:
|
||
|
|
# a.value = same_name[0].value
|
||
|
|
argv = parse_argv(Tokens(argv), list(options), options_first)
|
||
|
|
pattern_options = set(pattern.flat(Option))
|
||
|
|
for options_shortcut in pattern.flat(OptionsShortcut):
|
||
|
|
doc_options = parse_defaults(doc)
|
||
|
|
options_shortcut.children = list(set(doc_options) - pattern_options)
|
||
|
|
#if any_options:
|
||
|
|
# options_shortcut.children += [Option(o.short, o.long, o.argcount)
|
||
|
|
# for o in argv if type(o) is Option]
|
||
|
|
extras(help, version, argv, doc)
|
||
|
|
matched, left, collected = pattern.fix().match(argv)
|
||
|
|
if matched and left == []: # better error message if left?
|
||
|
|
return Dict((a.name, a.value) for a in (pattern.flat() + collected))
|
||
|
|
raise DocoptExit()
|