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This module provides an implementation of the HeaderRegistry API.
The implementation is designed to flexibly follow RFC5322 rules.
Eventually HeaderRegistry will be a public API, but it isn't yet,
and will probably change some before that happens.
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dS )a� Create an object represeting a full email address.
An address can have a 'display_name', a 'username', and a 'domain'. In
addition to specifying the username and domain separately, they may be
specified together by using the addr_spec keyword *instead of* the
username and domain keywords. If an addr_spec string is specified it
must be properly quoted according to RFC 5322 rules; an error will be
raised if it is not.
An Address object has display_name, username, domain, and addr_spec
attributes, all of which are read-only. The addr_spec and the string
value of the object are both quoted according to RFC5322 rules, but
without any Content Transfer Encoding.
Nz=addrspec specified when username and/or domain also specifiedz6Invalid addr_spec; only '{}' could be parsed from '{}'r ) � TypeError�parser�
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� Z dS )�GroupNc C s$ || _ |r t|�| _dS t� | _dS )a Create an object representing an address group.
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is created by specifying a display_name and a possibly empty list of
Address objects. A Group can also be used to represent a single
address that is not in a group, which is convenient when manipulating
lists that are a combination of Groups and individual Addresses. In
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string representation of a Group whose display_name is None is the same
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BaseHeadera| Base class for message headers.
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value string and a dictionary as its arguments. The dictionary will
contain one key, 'defects', initialized to an empty list. After the call
the dictionary must contain two additional keys: parse_tree, set to the
parse tree obtained from parsing the header, and 'decoded', set to the
string value of the idealized representation of the data from the value.
(That is, encoded words are decoded, and values that have canonical
representations are so represented.)
The defects key is intended to collect parsing defects, which the message
parser will subsequently dispose of as appropriate. The parser should not,
insofar as practical, raise any errors. Defects should be added to the
list instead. The standard header parsers register defects for RFC
compliance issues, for obsolete RFC syntax, and for unrecoverable parsing
errors.
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the subclass must define an 'init' method, which will be passed the
dictionary as its keyword arguments. The method should use (usually by
setting them as the value of similarly named attributes) and remove all the
extra keys added by its parse method, and then use super to call its parent
class with the remaining arguments and keywords.
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that is either None or 1. XXX: need to better define this API.
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� Z d S ) �HeaderRegistryz%A header_factory and header registry.Tc C s* i | _ || _|| _|r| j �t� dS dS )a� Create a header_factory that works with the Policy API.
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header class's __bases__ list. default_class is the class that will be
used if "name" (see __call__) does not appear in the registry.
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specialized classes is copied in to the registry when the factory is
created. The default is True.
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default_class�update�_default_header_map)r r� r� �use_default_mapr r r r! * s �zHeaderRegistry.__init__c C s || j |�� < dS )zLRegister cls as the specialized class for handling "name" headers.
N)r� r� �r rQ rP r r r � map_to_type< s zHeaderRegistry.map_to_typec C s0 | j �|�� | j�}ttd|j �|| jfi �S )N�_)r� �getr� r� r4 r r8 r� r� r r r � __getitem__B s zHeaderRegistry.__getitem__c C s | | ||�S )a� Create a header instance for header 'name' from 'value'.
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class's constructor.
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