Python errors.HeaderParseError方法代碼示例

# 需要導入模塊: from future.backports.email import errors [as 別名]
# 或者: from future.backports.email.errors import HeaderParseError [as 別名]
def get_bare_quoted_string(value):
    """bare-quoted-string = DQUOTE *([FWS] qcontent) [FWS] DQUOTE

    A quoted-string without the leading or trailing white space.  Its
    value is the text between the quote marks, with whitespace
    preserved and quoted pairs decoded.
    """
    if value[0] != '"':
        raise errors.HeaderParseError(
            "expected '\"' but found '{}'".format(value))
    bare_quoted_string = BareQuotedString()
    value = value[1:]
    while value and value[0] != '"':
        if value[0] in WSP:
            token, value = get_fws(value)
        else:
            token, value = get_qcontent(value)
        bare_quoted_string.append(token)
    if not value:
        bare_quoted_string.defects.append(errors.InvalidHeaderDefect(
            "end of header inside quoted string"))
        return bare_quoted_string, value
    return bare_quoted_string, value[1:] 

# 需要導入模塊: from future.backports.email import errors [as 別名]
# 或者: from future.backports.email.errors import HeaderParseError [as 別名]
def get_atom(value):
    """atom = [CFWS] 1*atext [CFWS]

    """
    atom = Atom()
    if value and value[0] in CFWS_LEADER:
        token, value = get_cfws(value)
        atom.append(token)
    if value and value[0] in ATOM_ENDS:
        raise errors.HeaderParseError(
            "expected atom but found '{}'".format(value))
    token, value = get_atext(value)
    atom.append(token)
    if value and value[0] in CFWS_LEADER:
        token, value = get_cfws(value)
        atom.append(token)
    return atom, value 

# 需要導入模塊: from future.backports.email import errors [as 別名]
# 或者: from future.backports.email.errors import HeaderParseError [as 別名]
def get_dot_atom_text(value):
    """ dot-text = 1*atext *("." 1*atext)

    """
    dot_atom_text = DotAtomText()
    if not value or value[0] in ATOM_ENDS:
        raise errors.HeaderParseError("expected atom at a start of "
            "dot-atom-text but found '{}'".format(value))
    while value and value[0] not in ATOM_ENDS:
        token, value = get_atext(value)
        dot_atom_text.append(token)
        if value and value[0] == '.':
            dot_atom_text.append(DOT)
            value = value[1:]
    if dot_atom_text[-1] is DOT:
        raise errors.HeaderParseError("expected atom at end of dot-atom-text "
            "but found '{}'".format('.'+value))
    return dot_atom_text, value 

# 需要導入模塊: from future.backports.email import errors [as 別名]
# 或者: from future.backports.email.errors import HeaderParseError [as 別名]
def get_ttext(value):
    """ttext = <matches _ttext_matcher>

    We allow any non-TOKEN_ENDS in ttext, but add defects to the token's
    defects list if we find non-ttext characters.  We also register defects for
    *any* non-printables even though the RFC doesn't exclude all of them,
    because we follow the spirit of RFC 5322.

    """
    m = _non_token_end_matcher(value)
    if not m:
        raise errors.HeaderParseError(
            "expected ttext but found '{}'".format(value))
    ttext = m.group()
    value = value[len(ttext):]
    ttext = ValueTerminal(ttext, 'ttext')
    _validate_xtext(ttext)
    return ttext, value 

# 需要導入模塊: from future.backports.email import errors [as 別名]
# 或者: from future.backports.email.errors import HeaderParseError [as 別名]
def get_attrtext(value):
    """attrtext = 1*(any non-ATTRIBUTE_ENDS character)

    We allow any non-ATTRIBUTE_ENDS in attrtext, but add defects to the
    token's defects list if we find non-attrtext characters.  We also register
    defects for *any* non-printables even though the RFC doesn't exclude all of
    them, because we follow the spirit of RFC 5322.

    """
    m = _non_attribute_end_matcher(value)
    if not m:
        raise errors.HeaderParseError(
            "expected attrtext but found {!r}".format(value))
    attrtext = m.group()
    value = value[len(attrtext):]
    attrtext = ValueTerminal(attrtext, 'attrtext')
    _validate_xtext(attrtext)
    return attrtext, value 

# 需要導入模塊: from future.backports.email import errors [as 別名]
# 或者: from future.backports.email.errors import HeaderParseError [as 別名]
def get_attribute(value):
    """ [CFWS] 1*attrtext [CFWS]

    This version of the BNF makes the CFWS explicit, and as usual we use a
    value terminal for the actual run of characters.  The RFC equivalent of
    attrtext is the token characters, with the subtraction of '*', "'", and '%'.
    We include tab in the excluded set just as we do for token.

    """
    attribute = Attribute()
    if value and value[0] in CFWS_LEADER:
        token, value = get_cfws(value)
        attribute.append(token)
    if value and value[0] in ATTRIBUTE_ENDS:
        raise errors.HeaderParseError(
            "expected token but found '{}'".format(value))
    token, value = get_attrtext(value)
    attribute.append(token)
    if value and value[0] in CFWS_LEADER:
        token, value = get_cfws(value)
        attribute.append(token)
    return attribute, value 

# 需要導入模塊: from future.backports.email import errors [as 別名]
# 或者: from future.backports.email.errors import HeaderParseError [as 別名]
def get_extended_attrtext(value):
    """attrtext = 1*(any non-ATTRIBUTE_ENDS character plus '%')

    This is a special parsing routine so that we get a value that
    includes % escapes as a single string (which we decode as a single
    string later).

    """
    m = _non_extended_attribute_end_matcher(value)
    if not m:
        raise errors.HeaderParseError(
            "expected extended attrtext but found {!r}".format(value))
    attrtext = m.group()
    value = value[len(attrtext):]
    attrtext = ValueTerminal(attrtext, 'extended-attrtext')
    _validate_xtext(attrtext)
    return attrtext, value 

# 需要導入模塊: from future.backports.email import errors [as 別名]
# 或者: from future.backports.email.errors import HeaderParseError [as 別名]
def get_extended_attribute(value):
    """ [CFWS] 1*extended_attrtext [CFWS]

    This is like the non-extended version except we allow % characters, so that
    we can pick up an encoded value as a single string.

    """
    # XXX: should we have an ExtendedAttribute TokenList?
    attribute = Attribute()
    if value and value[0] in CFWS_LEADER:
        token, value = get_cfws(value)
        attribute.append(token)
    if value and value[0] in EXTENDED_ATTRIBUTE_ENDS:
        raise errors.HeaderParseError(
            "expected token but found '{}'".format(value))
    token, value = get_extended_attrtext(value)
    attribute.append(token)
    if value and value[0] in CFWS_LEADER:
        token, value = get_cfws(value)
        attribute.append(token)
    return attribute, value 

# 需要導入模塊: from future.backports.email import errors [as 別名]
# 或者: from future.backports.email.errors import HeaderParseError [as 別名]
def get_comment(value):
    """comment = "(" *([FWS] ccontent) [FWS] ")"
       ccontent = ctext / quoted-pair / comment

    We handle nested comments here, and quoted-pair in our qp-ctext routine.
    """
    if value and value[0] != '(':
        raise errors.HeaderParseError(
            "expected '(' but found '{}'".format(value))
    comment = Comment()
    value = value[1:]
    while value and value[0] != ")":
        if value[0] in WSP:
            token, value = get_fws(value)
        elif value[0] == '(':
            token, value = get_comment(value)
        else:
            token, value = get_qp_ctext(value)
        comment.append(token)
    if not value:
        comment.defects.append(errors.InvalidHeaderDefect(
            "end of header inside comment"))
        return comment, value
    return comment, value[1:] 

# 需要導入模塊: from future.backports.email import errors [as 別名]
# 或者: from future.backports.email.errors import HeaderParseError [as 別名]
def get_mailbox(value):
    """ mailbox = name-addr / addr-spec

    """
    # The only way to figure out if we are dealing with a name-addr or an
    # addr-spec is to try parsing each one.
    mailbox = Mailbox()
    try:
        token, value = get_name_addr(value)
    except errors.HeaderParseError:
        try:
            token, value = get_addr_spec(value)
        except errors.HeaderParseError:
            raise errors.HeaderParseError(
                "expected mailbox but found '{}'".format(value))
    if any(isinstance(x, errors.InvalidHeaderDefect)
                       for x in token.all_defects):
        mailbox.token_type = 'invalid-mailbox'
    mailbox.append(token)
    return mailbox, value 

# 需要導入模塊: from future.backports.email import errors [as 別名]
# 或者: from future.backports.email.errors import HeaderParseError [as 別名]
def get_token(value):
    """token = [CFWS] 1*ttext [CFWS]

    The RFC equivalent of ttext is any US-ASCII chars except space, ctls, or
    tspecials.  We also exclude tabs even though the RFC doesn't.

    The RFC implies the CFWS but is not explicit about it in the BNF.

    """
    mtoken = Token()
    if value and value[0] in CFWS_LEADER:
        token, value = get_cfws(value)
        mtoken.append(token)
    if value and value[0] in TOKEN_ENDS:
        raise errors.HeaderParseError(
            "expected token but found '{}'".format(value))
    token, value = get_ttext(value)
    mtoken.append(token)
    if value and value[0] in CFWS_LEADER:
        token, value = get_cfws(value)
        mtoken.append(token)
    return mtoken, value 

# 需要導入模塊: from future.backports.email import errors [as 別名]
# 或者: from future.backports.email.errors import HeaderParseError [as 別名]
def get_atext(value):
    """atext = <matches _atext_matcher>

    We allow any non-ATOM_ENDS in atext, but add an InvalidATextDefect to
    the token's defects list if we find non-atext characters.
    """
    m = _non_atom_end_matcher(value)
    if not m:
        raise errors.HeaderParseError(
            "expected atext but found '{}'".format(value))
    atext = m.group()
    value = value[len(atext):]
    atext = ValueTerminal(atext, 'atext')
    _validate_xtext(atext)
    return atext, value 

# 需要導入模塊: from future.backports.email import errors [as 別名]
# 或者: from future.backports.email.errors import HeaderParseError [as 別名]
def get_word(value):
    """word = atom / quoted-string

    Either atom or quoted-string may start with CFWS.  We have to peel off this
    CFWS first to determine which type of word to parse.  Afterward we splice
    the leading CFWS, if any, into the parsed sub-token.

    If neither an atom or a quoted-string is found before the next special, a
    HeaderParseError is raised.

    The token returned is either an Atom or a QuotedString, as appropriate.
    This means the 'word' level of the formal grammar is not represented in the
    parse tree; this is because having that extra layer when manipulating the
    parse tree is more confusing than it is helpful.

    """
    if value[0] in CFWS_LEADER:
        leader, value = get_cfws(value)
    else:
        leader = None
    if value[0]=='"':
        token, value = get_quoted_string(value)
    elif value[0] in SPECIALS:
        raise errors.HeaderParseError("Expected 'atom' or 'quoted-string' "
                                      "but found '{}'".format(value))
    else:
        token, value = get_atom(value)
    if leader is not None:
        token[:0] = [leader]
    return token, value 

# 需要導入模塊: from future.backports.email import errors [as 別名]
# 或者: from future.backports.email.errors import HeaderParseError [as 別名]
def get_phrase(value):
    """ phrase = 1*word / obs-phrase
        obs-phrase = word *(word / "." / CFWS)

    This means a phrase can be a sequence of words, periods, and CFWS in any
    order as long as it starts with at least one word.  If anything other than
    words is detected, an ObsoleteHeaderDefect is added to the token's defect
    list.  We also accept a phrase that starts with CFWS followed by a dot;
    this is registered as an InvalidHeaderDefect, since it is not supported by
    even the obsolete grammar.

    """
    phrase = Phrase()
    try:
        token, value = get_word(value)
        phrase.append(token)
    except errors.HeaderParseError:
        phrase.defects.append(errors.InvalidHeaderDefect(
            "phrase does not start with word"))
    while value and value[0] not in PHRASE_ENDS:
        if value[0]=='.':
            phrase.append(DOT)
            phrase.defects.append(errors.ObsoleteHeaderDefect(
                "period in 'phrase'"))
            value = value[1:]
        else:
            try:
                token, value = get_word(value)
            except errors.HeaderParseError:
                if value[0] in CFWS_LEADER:
                    token, value = get_cfws(value)
                    phrase.defects.append(errors.ObsoleteHeaderDefect(
                        "comment found without atom"))
                else:
                    raise
            phrase.append(token)
    return phrase, value 

# 需要導入模塊: from future.backports.email import errors [as 別名]
# 或者: from future.backports.email.errors import HeaderParseError [as 別名]
def get_local_part(value):
    """ local-part = dot-atom / quoted-string / obs-local-part

    """
    local_part = LocalPart()
    leader = None
    if value[0] in CFWS_LEADER:
        leader, value = get_cfws(value)
    if not value:
        raise errors.HeaderParseError(
            "expected local-part but found '{}'".format(value))
    try:
        token, value = get_dot_atom(value)
    except errors.HeaderParseError:
        try:
            token, value = get_word(value)
        except errors.HeaderParseError:
            if value[0] != '\\' and value[0] in PHRASE_ENDS:
                raise
            token = TokenList()
    if leader is not None:
        token[:0] = [leader]
    local_part.append(token)
    if value and (value[0]=='\\' or value[0] not in PHRASE_ENDS):
        obs_local_part, value = get_obs_local_part(str(local_part) + value)
        if obs_local_part.token_type == 'invalid-obs-local-part':
            local_part.defects.append(errors.InvalidHeaderDefect(
                "local-part is not dot-atom, quoted-string, or obs-local-part"))
        else:
            local_part.defects.append(errors.ObsoleteHeaderDefect(
                "local-part is not a dot-atom (contains CFWS)"))
        local_part[0] = obs_local_part
    try:
        local_part.value.encode('ascii')
    except UnicodeEncodeError:
        local_part.defects.append(errors.NonASCIILocalPartDefect(
                "local-part contains non-ASCII characters)"))
    return local_part, value