bbf6d9b026
Bugfix for feeds
- removed categories related and up
- load new books now working
- category random now working
login page is free of non accessible elements
boolean custom column is vivible in UI
books with only with certain languages can be shown
book shelfs can be deleted from UI
Anonymous user view is more resticted
Added browse of series in sidebar
Dependencys in vendor folder are updated to newer versions (licencs files are now present)
Bugfix editing Authors names
Made upload on windows working
427 lines
15 KiB
Python
427 lines
15 KiB
Python
# -*- coding: utf-8 -*-
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"""
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click.parser
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~~~~~~~~~~~~
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This module started out as largely a copy paste from the stdlib's
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optparse module with the features removed that we do not need from
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optparse because we implement them in Click on a higher level (for
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instance type handling, help formatting and a lot more).
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The plan is to remove more and more from here over time.
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The reason this is a different module and not optparse from the stdlib
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is that there are differences in 2.x and 3.x about the error messages
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generated and optparse in the stdlib uses gettext for no good reason
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and might cause us issues.
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"""
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import re
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from collections import deque
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from .exceptions import UsageError, NoSuchOption, BadOptionUsage, \
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BadArgumentUsage
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def _unpack_args(args, nargs_spec):
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"""Given an iterable of arguments and an iterable of nargs specifications,
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it returns a tuple with all the unpacked arguments at the first index
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and all remaining arguments as the second.
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The nargs specification is the number of arguments that should be consumed
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or `-1` to indicate that this position should eat up all the remainders.
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Missing items are filled with `None`.
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"""
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args = deque(args)
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nargs_spec = deque(nargs_spec)
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rv = []
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spos = None
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def _fetch(c):
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try:
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if spos is None:
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return c.popleft()
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else:
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return c.pop()
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except IndexError:
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return None
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while nargs_spec:
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nargs = _fetch(nargs_spec)
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if nargs == 1:
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rv.append(_fetch(args))
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elif nargs > 1:
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x = [_fetch(args) for _ in range(nargs)]
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# If we're reversed, we're pulling in the arguments in reverse,
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# so we need to turn them around.
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if spos is not None:
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x.reverse()
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rv.append(tuple(x))
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elif nargs < 0:
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if spos is not None:
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raise TypeError('Cannot have two nargs < 0')
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spos = len(rv)
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rv.append(None)
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# spos is the position of the wildcard (star). If it's not `None`,
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# we fill it with the remainder.
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if spos is not None:
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rv[spos] = tuple(args)
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args = []
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rv[spos + 1:] = reversed(rv[spos + 1:])
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return tuple(rv), list(args)
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def _error_opt_args(nargs, opt):
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if nargs == 1:
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raise BadOptionUsage('%s option requires an argument' % opt)
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raise BadOptionUsage('%s option requires %d arguments' % (opt, nargs))
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def split_opt(opt):
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first = opt[:1]
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if first.isalnum():
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return '', opt
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if opt[1:2] == first:
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return opt[:2], opt[2:]
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return first, opt[1:]
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def normalize_opt(opt, ctx):
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if ctx is None or ctx.token_normalize_func is None:
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return opt
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prefix, opt = split_opt(opt)
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return prefix + ctx.token_normalize_func(opt)
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def split_arg_string(string):
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"""Given an argument string this attempts to split it into small parts."""
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rv = []
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for match in re.finditer(r"('([^'\\]*(?:\\.[^'\\]*)*)'"
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r'|"([^"\\]*(?:\\.[^"\\]*)*)"'
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r'|\S+)\s*', string, re.S):
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arg = match.group().strip()
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if arg[:1] == arg[-1:] and arg[:1] in '"\'':
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arg = arg[1:-1].encode('ascii', 'backslashreplace') \
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.decode('unicode-escape')
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try:
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arg = type(string)(arg)
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except UnicodeError:
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pass
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rv.append(arg)
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return rv
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class Option(object):
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def __init__(self, opts, dest, action=None, nargs=1, const=None, obj=None):
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self._short_opts = []
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self._long_opts = []
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self.prefixes = set()
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for opt in opts:
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prefix, value = split_opt(opt)
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if not prefix:
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raise ValueError('Invalid start character for option (%s)'
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% opt)
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self.prefixes.add(prefix[0])
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if len(prefix) == 1 and len(value) == 1:
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self._short_opts.append(opt)
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else:
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self._long_opts.append(opt)
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self.prefixes.add(prefix)
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if action is None:
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action = 'store'
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self.dest = dest
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self.action = action
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self.nargs = nargs
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self.const = const
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self.obj = obj
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@property
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def takes_value(self):
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return self.action in ('store', 'append')
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def process(self, value, state):
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if self.action == 'store':
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state.opts[self.dest] = value
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elif self.action == 'store_const':
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state.opts[self.dest] = self.const
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elif self.action == 'append':
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state.opts.setdefault(self.dest, []).append(value)
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elif self.action == 'append_const':
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state.opts.setdefault(self.dest, []).append(self.const)
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elif self.action == 'count':
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state.opts[self.dest] = state.opts.get(self.dest, 0) + 1
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else:
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raise ValueError('unknown action %r' % self.action)
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state.order.append(self.obj)
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class Argument(object):
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def __init__(self, dest, nargs=1, obj=None):
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self.dest = dest
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self.nargs = nargs
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self.obj = obj
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def process(self, value, state):
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if self.nargs > 1:
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holes = sum(1 for x in value if x is None)
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if holes == len(value):
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value = None
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elif holes != 0:
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raise BadArgumentUsage('argument %s takes %d values'
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% (self.dest, self.nargs))
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state.opts[self.dest] = value
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state.order.append(self.obj)
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class ParsingState(object):
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def __init__(self, rargs):
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self.opts = {}
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self.largs = []
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self.rargs = rargs
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self.order = []
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class OptionParser(object):
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"""The option parser is an internal class that is ultimately used to
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parse options and arguments. It's modelled after optparse and brings
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a similar but vastly simplified API. It should generally not be used
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directly as the high level Click classes wrap it for you.
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It's not nearly as extensible as optparse or argparse as it does not
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implement features that are implemented on a higher level (such as
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types or defaults).
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:param ctx: optionally the :class:`~click.Context` where this parser
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should go with.
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"""
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def __init__(self, ctx=None):
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#: The :class:`~click.Context` for this parser. This might be
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#: `None` for some advanced use cases.
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self.ctx = ctx
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#: This controls how the parser deals with interspersed arguments.
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#: If this is set to `False`, the parser will stop on the first
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#: non-option. Click uses this to implement nested subcommands
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#: safely.
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self.allow_interspersed_args = True
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#: This tells the parser how to deal with unknown options. By
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#: default it will error out (which is sensible), but there is a
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#: second mode where it will ignore it and continue processing
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#: after shifting all the unknown options into the resulting args.
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self.ignore_unknown_options = False
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if ctx is not None:
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self.allow_interspersed_args = ctx.allow_interspersed_args
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self.ignore_unknown_options = ctx.ignore_unknown_options
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self._short_opt = {}
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self._long_opt = {}
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self._opt_prefixes = set(['-', '--'])
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self._args = []
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def add_option(self, opts, dest, action=None, nargs=1, const=None,
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obj=None):
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"""Adds a new option named `dest` to the parser. The destination
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is not inferred (unlike with optparse) and needs to be explicitly
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provided. Action can be any of ``store``, ``store_const``,
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``append``, ``appnd_const`` or ``count``.
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The `obj` can be used to identify the option in the order list
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that is returned from the parser.
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"""
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if obj is None:
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obj = dest
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opts = [normalize_opt(opt, self.ctx) for opt in opts]
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option = Option(opts, dest, action=action, nargs=nargs,
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const=const, obj=obj)
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self._opt_prefixes.update(option.prefixes)
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for opt in option._short_opts:
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self._short_opt[opt] = option
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for opt in option._long_opts:
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self._long_opt[opt] = option
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def add_argument(self, dest, nargs=1, obj=None):
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"""Adds a positional argument named `dest` to the parser.
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The `obj` can be used to identify the option in the order list
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that is returned from the parser.
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"""
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if obj is None:
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obj = dest
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self._args.append(Argument(dest=dest, nargs=nargs, obj=obj))
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def parse_args(self, args):
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"""Parses positional arguments and returns ``(values, args, order)``
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for the parsed options and arguments as well as the leftover
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arguments if there are any. The order is a list of objects as they
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appear on the command line. If arguments appear multiple times they
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will be memorized multiple times as well.
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"""
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state = ParsingState(args)
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try:
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self._process_args_for_options(state)
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self._process_args_for_args(state)
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except UsageError:
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if self.ctx is None or not self.ctx.resilient_parsing:
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raise
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return state.opts, state.largs, state.order
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def _process_args_for_args(self, state):
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pargs, args = _unpack_args(state.largs + state.rargs,
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[x.nargs for x in self._args])
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for idx, arg in enumerate(self._args):
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arg.process(pargs[idx], state)
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state.largs = args
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state.rargs = []
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def _process_args_for_options(self, state):
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while state.rargs:
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arg = state.rargs.pop(0)
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arglen = len(arg)
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# Double dashes always handled explicitly regardless of what
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# prefixes are valid.
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if arg == '--':
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return
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elif arg[:1] in self._opt_prefixes and arglen > 1:
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self._process_opts(arg, state)
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elif self.allow_interspersed_args:
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state.largs.append(arg)
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else:
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state.rargs.insert(0, arg)
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return
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# Say this is the original argument list:
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# [arg0, arg1, ..., arg(i-1), arg(i), arg(i+1), ..., arg(N-1)]
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# ^
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# (we are about to process arg(i)).
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#
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# Then rargs is [arg(i), ..., arg(N-1)] and largs is a *subset* of
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# [arg0, ..., arg(i-1)] (any options and their arguments will have
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# been removed from largs).
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#
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# The while loop will usually consume 1 or more arguments per pass.
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# If it consumes 1 (eg. arg is an option that takes no arguments),
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# then after _process_arg() is done the situation is:
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#
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# largs = subset of [arg0, ..., arg(i)]
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# rargs = [arg(i+1), ..., arg(N-1)]
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#
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# If allow_interspersed_args is false, largs will always be
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# *empty* -- still a subset of [arg0, ..., arg(i-1)], but
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# not a very interesting subset!
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def _match_long_opt(self, opt, explicit_value, state):
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if opt not in self._long_opt:
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possibilities = [word for word in self._long_opt
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if word.startswith(opt)]
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raise NoSuchOption(opt, possibilities=possibilities)
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option = self._long_opt[opt]
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if option.takes_value:
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# At this point it's safe to modify rargs by injecting the
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# explicit value, because no exception is raised in this
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# branch. This means that the inserted value will be fully
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# consumed.
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if explicit_value is not None:
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state.rargs.insert(0, explicit_value)
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nargs = option.nargs
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if len(state.rargs) < nargs:
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_error_opt_args(nargs, opt)
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elif nargs == 1:
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value = state.rargs.pop(0)
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else:
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value = tuple(state.rargs[:nargs])
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del state.rargs[:nargs]
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elif explicit_value is not None:
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raise BadOptionUsage('%s option does not take a value' % opt)
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else:
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value = None
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option.process(value, state)
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def _match_short_opt(self, arg, state):
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stop = False
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i = 1
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prefix = arg[0]
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unknown_options = []
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for ch in arg[1:]:
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opt = normalize_opt(prefix + ch, self.ctx)
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option = self._short_opt.get(opt)
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i += 1
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if not option:
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if self.ignore_unknown_options:
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unknown_options.append(ch)
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continue
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raise NoSuchOption(opt)
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if option.takes_value:
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# Any characters left in arg? Pretend they're the
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# next arg, and stop consuming characters of arg.
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if i < len(arg):
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state.rargs.insert(0, arg[i:])
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stop = True
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nargs = option.nargs
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if len(state.rargs) < nargs:
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_error_opt_args(nargs, opt)
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elif nargs == 1:
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value = state.rargs.pop(0)
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else:
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value = tuple(state.rargs[:nargs])
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del state.rargs[:nargs]
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else:
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value = None
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option.process(value, state)
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if stop:
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break
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# If we got any unknown options we re-combinate the string of the
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# remaining options and re-attach the prefix, then report that
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# to the state as new larg. This way there is basic combinatorics
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# that can be achieved while still ignoring unknown arguments.
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if self.ignore_unknown_options and unknown_options:
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state.largs.append(prefix + ''.join(unknown_options))
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def _process_opts(self, arg, state):
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explicit_value = None
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# Long option handling happens in two parts. The first part is
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# supporting explicitly attached values. In any case, we will try
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# to long match the option first.
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if '=' in arg:
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long_opt, explicit_value = arg.split('=', 1)
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else:
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long_opt = arg
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norm_long_opt = normalize_opt(long_opt, self.ctx)
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# At this point we will match the (assumed) long option through
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# the long option matching code. Note that this allows options
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# like "-foo" to be matched as long options.
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try:
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self._match_long_opt(norm_long_opt, explicit_value, state)
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except NoSuchOption:
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# At this point the long option matching failed, and we need
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# to try with short options. However there is a special rule
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# which says, that if we have a two character options prefix
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# (applies to "--foo" for instance), we do not dispatch to the
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# short option code and will instead raise the no option
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# error.
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if arg[:2] not in self._opt_prefixes:
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return self._match_short_opt(arg, state)
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if not self.ignore_unknown_options:
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raise
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state.largs.append(arg)
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