Python pyparsing.MatchFirst() Examples

The following are 6 code examples of pyparsing.MatchFirst(). You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may also want to check out all available functions/classes of the module pyparsing , or try the search function .
Example #1
Source File: username.py    From ccat with GNU General Public License v3.0 6 votes vote down vote up 
def _globalParse___username_attributes(line):
    username_dict = {}

    username       = (Word(printables))                                         ('user')
    privilege      = (Suppress('privilege') + Word(nums))                       ('priv_num')
    password_type  = (Suppress(MatchFirst(['secret', 'password'])) + Word(nums))('pass_type')

    parse_username = username + Optional(privilege) + password_type + Suppress(restOfLine)

    result = parse_username.parseString(line)

    username_dict[result.user] = {}
    username_dict[result.user]['password_type'] = result.pass_type.asList()[0]

    try:
        username_dict[result.user]['privilege'] = result.priv_num.asList()[0]
    except AttributeError:
        pass

    return username_dict
Example #2
Source File: protein_modification.py    From pybel with MIT License 6 votes vote down vote up 
def get_protein_modification_language(concept_qualified: ParserElement) -> ParserElement:
    """Build a protein modification parser."""
    pmod_concept = MatchFirst([
        concept_qualified,
        pmod_default_ns,
        pmod_legacy_ns,
    ])

    return pmod_tag + nest(
        Group(pmod_concept)(CONCEPT)
        + Optional(
            WCW
            + amino_acid(PMOD_CODE)
            + Optional(WCW + ppc.integer(PMOD_POSITION)),
        ),
    )
Example #3
Source File: aaa.py    From ccat with GNU General Public License v3.0 5 votes vote down vote up 
def _globalParse___aaa_attributes(line, type, count_aaa):
    aaa_dict = {}

    authentication_list    = (Suppress('login')                     + Word(printables))  ('authent_list')
    authentication_groups  = (OneOrMore(Optional(Suppress('group')) + Word(printables))) ('authent_methods')

    parse_authentication   = authentication_list + authentication_groups

    # parse_authorization_options  = MatchFirst(['exec', 'login']) + Word(printables) + OneOrMore(Optional(Suppress('group')) + Word(printables))

    accounting_login   = (MatchFirst(['exec', 'network', 'connection', 'commands'])) ('acc_login')
    accounting_list    = (Optional(Word(nums)) + Word(printables))                   ('acc_list')
    accounting_record  = (MatchFirst(['start-stop', 'stop-only', 'stop']))           ('acc_record')
    accounting_methods = (OneOrMore(Optional(Suppress('group')) + Word(printables))) ('acc_methods')

    parse_accounting   = accounting_login + accounting_list + accounting_record + accounting_methods

    if   type == 'authentication':
        result = parse_authentication.parseString(line)
        aaa_dict.update({'login' + str(count_aaa): {}})
        aaa_dict['login' + str(count_aaa)]['list']    = result.authent_list[0]
        aaa_dict['login' + str(count_aaa)]['methods'] = result.authent_methods.asList()
    # elif type == 'authorization':
    #     result = parse_authorization_options.parseString(line)
    #     aaa_dict.update({'login' + str(count_aaa): {}})
    #     aaa_dict['login' + str(count_aaa)]['login']   = result.pop(0)
    #     aaa_dict['login' + str(count_aaa)]['list']    = result.pop(0)
    #     aaa_dict['login' + str(count_aaa)]['methods'] = result.asList()
    elif type == 'accounting':
        result = parse_accounting.parseString(line)
        aaa_dict.update({'login' + str(count_aaa): {}})
        aaa_dict['login' + str(count_aaa)]['login']   = result.acc_login
        aaa_dict['login' + str(count_aaa)]['list']    = result.acc_list.asList()
        aaa_dict['login' + str(count_aaa)]['record']  = result.acc_record
        aaa_dict['login' + str(count_aaa)]['methods'] = result.acc_methods.asList()

    return aaa_dict
Example #4
Source File: gene_modification.py    From pybel with MIT License 5 votes vote down vote up 
def get_gene_modification_language(concept_qualified: ParserElement) -> ParserElement:
    """Build a gene modification parser."""
    concept = MatchFirst([
        concept_qualified,
        gmod_default_ns,
    ])
    return gmod_tag + nest(Group(concept)(CONCEPT))
Example #5
Source File: strategies.py    From requirementslib with MIT License 5 votes vote down vote up 
def flatten_pyparsing_exprs(expr):
    exprs = set()
    for child in expr.exprs:
        if isinstance(child, (Literal, six.string_types)):
            exprs.add(str(child).strip('"'))
        elif isinstance(child, (MatchFirst, ParseExpression, ParserElement)):
            exprs.update(flatten_pyparsing_exprs(child))
    return exprs
Example #6
Source File: rule.py    From CWR-DataApi with MIT License 5 votes vote down vote up 
def _process_rules_group(self, rules):
        group = None

        group_type = rules.list_type
        data = rules.rules

        if group_type == 'sequence':
            group = self._process_rules(data, pp.And)
        elif group_type == 'option':
            group = self._process_rules(data, pp.MatchFirst)
        elif group_type == 'optional':
            group = pp.Optional(self._process_rules(data, pp.And))

        return group