✏️ 编辑：message.cpython-39.pyc
路径：
/usr/lib64/python3.9/email/__pycache__/message.cpython-39.pyc
大小：37 KB · 修改：2026-08-12 15:51:23 · 权限：0644 · 只读（保存会失败）
← 返回目录
👁 查看
⬇ 下载
检测到二进制内容，直接保存可能损坏文件。请改用「上传替换」。
a �i�� � @ s� d Z ddgZddlZddlZddlZddlmZmZ ddlm Z ddlm Z ddl m Z m Z dd lmZ dd lmZ ejZd Ze�d �Zd d� Zddd�Zdd� Zdd� ZG dd� d�ZG dd� de�ZG dd� de�Z dS )z8Basic message object for the email package object model.�Message� EmailMessage� N)�BytesIO�StringIO)�utils)�errors)�Policy�compat32��charset)�decode_bz; z[ \(\)<>@,;:\\"/\[\]\?=]c C s4 t | ��d�\}}}|s$|�� d fS |�� |�� fS )N�;)�str� partition�strip)�param�a�sep�b� r �%/usr/lib64/python3.9/email/message.py� _splitparam s r Tc C s� |dur�t |�dkr�t|t�rL| d7 } t�|d |d |d �}d| |f S z|�d� W n4 ty� | d7 } t�|dd �}d| |f Y S 0 |s�t�|�r�d | t� |�f S d| |f S n| S dS ) a~ Convenience function to format and return a key=value pair. This will quote the value if needed or if quote is true. If value is a three tuple (charset, language, value), it will be encoded according to RFC2231 rules. If it contains non-ascii characters it will likewise be encoded according to RFC2231 rules, using the utf-8 charset and a null language. Nr �*� � �%s=%s�asciizutf-8� z%s="%s") �len� isinstance�tupler Zencode_rfc2231�encode�UnicodeEncodeError� tspecials�search�quote)r �valuer% r r r � _formatparam' s r' c C s dt | � } g }d}| �d|�|k�r|d7 }| �d|�}|d }}|dkr�|| �d||�| �d||� 7 }|d dkrzq�|| �d|d � }}qD|dk r�t| �}| �d||�}|dkr�| ||� }n,| ||� �� �� d | |d |� �� }|�|�� � |}q|S ) Nr r r �"z\"r �=���) r �find�countr �rstrip�lower�lstrip�appendr )�sZplist�start�endZind�diff�i�fr r r � _parseparamI s* ,r7 c C s4 t | t�r&| d | d t�| d �fS t�| �S d S )Nr r r )r r r �unquote)r& r r r � _unquotevaluec s r9 c @ s� e Zd ZdZefdd�Zdd� Zddd d �Zd d � Zded d�Z dd� Z dd� Z dd� Z dd� Z dfdd�Zdgdd�Zdd � Zd d � Zd d � Zd!d"� Zd#d$� Zd%d&� Zd'd(� Zd)d*� Zd+d,� Zd-d.� Zd/d0� Zdhd1d2�Zd3d4� Z d5d6� Z did7d8�Z d9d:� Z d;d<� Z d=d>� Z!d?d@� Z"dAdB� Z#dCdD� Z$dEdF� Z%dGdH� Z&djdKdL�Z'dkdMdN�Z(dldQdR�Z)dmdSdT�Z*dndUdV�Z+dodWdX�Z,dpdYdZ�Z-d[d\� Z.dqd]d^�Z/drd_d`�Z0dadb� Z1ddcl2m3Z3 dS )sr a� Basic message object. A message object is defined as something that has a bunch of RFC 2822 headers and a payload. It may optionally have an envelope header (a.k.a. Unix-From or From_ header). If the message is a container (i.e. a multipart or a message/rfc822), then the payload is a list of Message objects, otherwise it is a string. Message objects implement part of the `mapping' interface, which assumes there is exactly one occurrence of the header per message. Some headers do in fact appear multiple times (e.g. Received) and for those headers, you must use the explicit API to set or get all the headers. Not all of the mapping methods are implemented. c C s: || _ g | _d | _d | _d | _d | _| _g | _d| _d S )N� text/plain) �policy�_headers� _unixfrom�_payload�_charsetZpreambleZepilogue�defects� _default_type)�selfr; r r r �__init__~ s zMessage.__init__c C s | � � S )z9Return the entire formatted message as a string. )� as_string�rB r r r �__str__� s zMessage.__str__Fr Nc C sJ ddl m} |du r| jn|}t� }||d||d�}|j| |d� |�� S )a� Return the entire formatted message as a string. Optional 'unixfrom', when true, means include the Unix From_ envelope header. For backward compatibility reasons, if maxheaderlen is not specified it defaults to 0, so you must override it explicitly if you want a different maxheaderlen. 'policy' is passed to the Generator instance used to serialize the message; if it is not specified the policy associated with the message instance is used. If the message object contains binary data that is not encoded according to RFC standards, the non-compliant data will be replaced by unicode "unknown character" code points. r )� GeneratorNF)� mangle_from_� maxheaderlenr; ��unixfrom)�email.generatorrG r; r �flatten�getvalue)rB rK rI r; rG �fp�gr r r rD � s �zMessage.as_stringc C s | � � S )z?Return the entire formatted message as a bytes object. )�as_bytesrE r r r � __bytes__� s zMessage.__bytes__c C sH ddl m} |du r| jn|}t� }||d|d�}|j| |d� |�� S )aJ Return the entire formatted message as a bytes object. Optional 'unixfrom', when true, means include the Unix From_ envelope header. 'policy' is passed to the BytesGenerator instance used to serialize the message; if not specified the policy associated with the message instance is used. r )�BytesGeneratorNF)rH r; rJ )rL rS r; r rM rN )rB rK r; rS rO rP r r r rQ � s zMessage.as_bytesc C s t | jt�S )z6Return True if the message consists of multiple parts.)r r> �listrE r r r � is_multipart� s zMessage.is_multipartc C s || _ d S �N�r= )rB rK r r r � set_unixfrom� s zMessage.set_unixfromc C s | j S rV rW rE r r r � get_unixfrom� s zMessage.get_unixfromc C sD | j du r|g| _ n,z| j �|� W n ty> td��Y n0 dS )z�Add the given payload to the current payload. The current payload will always be a list of objects after this method is called. If you want to set the payload to a scalar object, use set_payload() instead. Nz=Attach is not valid on a message with a non-multipart payload)r> r0 �AttributeError� TypeError)rB �payloadr r r �attach� s zMessage.attachc C s� | � � r(|rdS |du r | jS | j| S |durNt| jt�sNtdt| j� ��| j}t| �dd���� }t|t�r�t � |�r�|� dd�}|s�z|� | � dd�d�}W q� ty� |� dd�}Y q�0 n0|r�z|� d�}W n ty� |� d �}Y n0 |�s |S |d k�rt�|�S |d k�rRtd �|�� ��\}}|D ]}| j�| |� �q8|S |d v �r�t|�} t� } ztj | | dd� | �� W S tj�y� | Y S 0 t|t��r�|S |S )aZ Return a reference to the payload. The payload will either be a list object or a string. If you mutate the list object, you modify the message's payload in place. Optional i returns that index into the payload. Optional decode is a flag indicating whether the payload should be decoded or not, according to the Content-Transfer-Encoding header (default is False). When True and the message is not a multipart, the payload will be decoded if this header's value is `quoted-printable' or `base64'. If some other encoding is used, or the header is missing, or if the payload has bogus data (i.e. bogus base64 or uuencoded data), the payload is returned as-is. If the message is a multipart and the decode flag is True, then None is returned. NzExpected list, got %szcontent-transfer-encodingr r �surrogateescaper �replace�raw-unicode-escapezquoted-printable�base64� )z x-uuencodeZuuencodeZuuezx-uueT)�quiet)rU r> r rT r[ �typer �getr. r Z_has_surrogatesr! �decode� get_param� LookupError� UnicodeError�quopriZ decodestringr �join� splitlinesr; Z handle_defectr �uurN �Error) rB r5 rf r\ �cteZbpayloadr& r@ ZdefectZin_fileZout_filer r r � get_payload� sV " zMessage.get_payloadc C sp t |d�r:|du r || _dS t|t�s.t|�}|�|j�}t |d�rT|�dd�| _n|| _|durl| �|� dS )z�Set the payload to the given value. Optional charset sets the message's default character set. See set_charset() for details. r! Nrf r r^ )�hasattrr> r �Charsetr! �output_charsetrf � set_charset)rB r\ r r r r � set_payload5 s zMessage.set_payloadc C s |du r | � d� d| _dS t|t�s.t|�}|| _d| vrH| �dd� d| vrf| jdd|�� d� n| �d|�� � ||�� kr�|�| j�| _d| v�r|� � }z || � W nf t �y | j}|r�z|� d d �}W n t y� |� |j �}Y n0 |�|�| _| �d|� Y n0 dS ) a� Set the charset of the payload to a given character set. charset can be a Charset instance, a string naming a character set, or None. If it is a string it will be converted to a Charset instance. If charset is None, the charset parameter will be removed from the Content-Type field. Anything else will generate a TypeError. The message will be assumed to be of type text/* encoded with charset.input_charset. It will be converted to charset.output_charset and encoded properly, if needed, when generating the plain text representation of the message. MIME headers (MIME-Version, Content-Type, Content-Transfer-Encoding) will be added as needed. Nr � MIME-Version�1.0� Content-Typer: r zContent-Transfer-Encodingr r^ )� del_paramr? r rr � add_headerZget_output_charset� set_paramZ body_encoder> Zget_body_encodingr[ r! ri rs )rB r ro r\ r r r rt I s: � zMessage.set_charsetc C s | j S )zKReturn the Charset instance associated with the message's payload. )r? rE r r r � get_charsetx s zMessage.get_charsetc C s t | j�S )z9Return the total number of headers, including duplicates.)r r< rE r r r �__len__� s zMessage.__len__c C s | � |�S )a- Get a header value. Return None if the header is missing instead of raising an exception. Note that if the header appeared multiple times, exactly which occurrence gets returned is undefined. Use get_all() to get all the values matching a header field name. )re �rB �namer r r � __getitem__� s zMessage.__getitem__c C sr | j �|�}|rX|�� }d}| jD ]4\}}|�� |kr"|d7 }||kr"td�||���q"| j�| j �||�� dS )z�Set the value of a header. Note: this does not overwrite an existing header with the same field name. Use __delitem__() first to delete any existing headers. r r z/There may be at most {} {} headers in a messageN)r; Zheader_max_countr. r< � ValueError�formatr0 �header_store_parse)rB r �valZ max_countZlname�found�k�vr r r � __setitem__� s �zMessage.__setitem__c C s@ |� � }g }| jD ]"\}}|� � |kr|�||f� q|| _dS )zwDelete all occurrences of a header, if present. Does not raise an exception if the header is missing. N)r. r< r0 )rB r � newheadersr� r� r r r � __delitem__� s zMessage.__delitem__c C s |� � dd� | jD �v S )Nc S s g | ]\}}|� � �qS r )r. ��.0r� r� r r r � <listcomp>� rb z(Message.__contains__.<locals>.<listcomp>)r. r< r~ r r r � __contains__� s zMessage.__contains__c c s | j D ]\}}|V qd S rV �r< )rB Zfieldr& r r r �__iter__� s zMessage.__iter__c C s dd� | j D �S )a. Return a list of all the message's header field names. These will be sorted in the order they appeared in the original message, or were added to the message, and may contain duplicates. Any fields deleted and re-inserted are always appended to the header list. c S s g | ] \}}|�qS r r r� r r r r� � rb z Message.keys.<locals>.<listcomp>r� rE r r r �keys� s z Message.keysc s � fdd�� j D �S )a) Return a list of all the message's header values. These will be sorted in the order they appeared in the original message, or were added to the message, and may contain duplicates. Any fields deleted and re-inserted are always appended to the header list. c s g | ]\}}� j �||��qS r �r; �header_fetch_parser� rE r r r� � s �z"Message.values.<locals>.<listcomp>r� rE r rE r �values� s �zMessage.valuesc s � fdd�� j D �S )a' Get all the message's header fields and values. These will be sorted in the order they appeared in the original message, or were added to the message, and may contain duplicates. Any fields deleted and re-inserted are always appended to the header list. c s" g | ]\}}|� j �||�f�qS r r� r� rE r r r� � s �z!Message.items.<locals>.<listcomp>r� rE r rE r �items� s �z Message.itemsc C s: |� � }| jD ]&\}}|� � |kr| j�||� S q|S )z~Get a header value. Like __getitem__() but return failobj instead of None when the field is missing. )r. r< r; r� )rB r �failobjr� r� r r r re � s z Message.getc C s | j �||f� dS )z�Store name and value in the model without modification. This is an "internal" API, intended only for use by a parser. N)r< r0 )rB r r& r r r �set_raw� s zMessage.set_rawc C s t | j�� �S )z�Return the (name, value) header pairs without modification. This is an "internal" API, intended only for use by a generator. )�iterr< �copyrE r r r � raw_items� s zMessage.raw_itemsc C sH g }|� � }| jD ](\}}|� � |kr|�| j�||�� q|sD|S |S )aQ Return a list of all the values for the named field. These will be sorted in the order they appeared in the original message, and may contain duplicates. Any fields deleted and re-inserted are always appended to the header list. If no such fields exist, failobj is returned (defaults to None). )r. r< r0 r; r� )rB r r� r� r� r� r r r �get_all� s zMessage.get_allc K sp g }|� � D ]<\}}|du r0|�|�dd�� q |�t|�dd�|�� q |dur^|�d|� t�|�| |< dS )u� Extended header setting. name is the header field to add. keyword arguments can be used to set additional parameters for the header field, with underscores converted to dashes. Normally the parameter will be added as key="value" unless value is None, in which case only the key will be added. If a parameter value contains non-ASCII characters it can be specified as a three-tuple of (charset, language, value), in which case it will be encoded according to RFC2231 rules. Otherwise it will be encoded using the utf-8 charset and a language of ''. Examples: msg.add_header('content-disposition', 'attachment', filename='bud.gif') msg.add_header('content-disposition', 'attachment', filename=('utf-8', '', Fußballer.ppt')) msg.add_header('content-disposition', 'attachment', filename='Fußballer.ppt')) N�_�-r )r� r0 r_ r' �insert� SEMISPACErk )rB �_name�_valueZ_params�partsr� r� r r r rz s zMessage.add_headerc C s\ |� � }ttt| j��| j�D ]0\}\}}|� � |kr | j�||�| j|< qXq t|��dS )z�Replace a header. Replace the first matching header found in the message, retaining header order and case. If no matching header was found, a KeyError is raised. N)r. �zip�ranger r< r; r� �KeyError)rB r� r� r5 r� r� r r r �replace_header' s " zMessage.replace_headerc C sH t � }| �d|�}||u r"| �� S t|�d �� }|�d�dkrDdS |S )a0 Return the message's content type. The returned string is coerced to lower case of the form `maintype/subtype'. If there was no Content-Type header in the message, the default type as given by get_default_type() will be returned. Since according to RFC 2045, messages always have a default type this will always return a value. RFC 2045 defines a message's default type to be text/plain unless it appears inside a multipart/digest container, in which case it would be message/rfc822. � content-typer �/r r: )�objectre �get_default_typer r. r, )rB �missingr& �ctyper r r �get_content_type: s zMessage.get_content_typec C s | � � }|�d�d S )z�Return the message's main content type. This is the `maintype' part of the string returned by get_content_type(). r� r �r� �split�rB r� r r r �get_content_maintypeR s z Message.get_content_maintypec C s | � � }|�d�d S )z�Returns the message's sub-content type. This is the `subtype' part of the string returned by get_content_type(). r� r r� r� r r r �get_content_subtype[ s zMessage.get_content_subtypec C s | j S )a Return the `default' content type. Most messages have a default content type of text/plain, except for messages that are subparts of multipart/digest containers. Such subparts have a default content type of message/rfc822. �rA rE r r r r� d s zMessage.get_default_typec C s || _ dS )z�Set the `default' content type. ctype should be either "text/plain" or "message/rfc822", although this is not enforced. The default content type is not stored in the Content-Type header. Nr� r� r r r �set_default_typem s zMessage.set_default_typec C s� t � }| �||�}||u r |S g }t|�D ]V}z$|�dd�\}}|�� }|�� }W n typ |�� }d}Y n0 |�||f� q*t�|�}|S )Nr) r r ) r� re r7 r� r r� r0 r Z decode_params) rB r� �headerr� r& �params�pr r� r r r �_get_params_preservev s z Message._get_params_preserver� Tc C s8 t � }| �||�}||u r |S |r0dd� |D �S |S dS )am Return the message's Content-Type parameters, as a list. The elements of the returned list are 2-tuples of key/value pairs, as split on the `=' sign. The left hand side of the `=' is the key, while the right hand side is the value. If there is no `=' sign in the parameter the value is the empty string. The value is as described in the get_param() method. Optional failobj is the object to return if there is no Content-Type header. Optional header is the header to search instead of Content-Type. If unquote is True, the value is unquoted. c S s g | ]\}}|t |�f�qS r )r9 r� r r r r� � rb z&Message.get_params.<locals>.<listcomp>N)r� r� )rB r� r� r8 r� r� r r r � get_params� s zMessage.get_paramsc C sN || vr |S | � ||�D ]0\}}|�� |�� kr|r@t|� S | S q|S )a� Return the parameter value if found in the Content-Type header. Optional failobj is the object to return if there is no Content-Type header, or the Content-Type header has no such parameter. Optional header is the header to search instead of Content-Type. Parameter keys are always compared case insensitively. The return value can either be a string, or a 3-tuple if the parameter was RFC 2231 encoded. When it's a 3-tuple, the elements of the value are of the form (CHARSET, LANGUAGE, VALUE). Note that both CHARSET and LANGUAGE can be None, in which case you should consider VALUE to be encoded in the us-ascii charset. You can usually ignore LANGUAGE. The parameter value (either the returned string, or the VALUE item in the 3-tuple) is always unquoted, unless unquote is set to False. If your application doesn't care whether the parameter was RFC 2231 encoded, it can turn the return value into a string as follows: rawparam = msg.get_param('foo') param = email.utils.collapse_rfc2231_value(rawparam) )r� r. r9 )rB r r� r� r8 r� r� r r r rg � s zMessage.get_paramrx r c C s t |t�s|r|||f}|| vr2|�� dkr2d}n | �|�}| j||d�st|s\t|||�}q�t�|t|||�g�}nbd}| j||d�D ]N\} } d} | �� |�� kr�t|||�} n t| | |�} |s�| }q�t�|| g�}q�|| �|�k�r|r�| � ||� n| |= || |< dS )a� Set a parameter in the Content-Type header. If the parameter already exists in the header, its value will be replaced with the new value. If header is Content-Type and has not yet been defined for this message, it will be set to "text/plain" and the new parameter and value will be appended as per RFC 2045. An alternate header can be specified in the header argument, and all parameters will be quoted as necessary unless requote is False. If charset is specified, the parameter will be encoded according to RFC 2231. Optional language specifies the RFC 2231 language, defaulting to the empty string. Both charset and language should be strings. r� r: )r� r �r� r8 N) r r r. re rg r' r� rk r� r� ) rB r r& r� �requoter �languager_ r� Z old_param� old_valueZ append_paramr r r r{ � s6 �� zMessage.set_paramc C s� || vr dS d}| j ||d�D ]@\}}|�� |�� kr |sHt|||�}q t�|t|||�g�}q || �|�kr|| |= || |< dS )a> Remove the given parameter completely from the Content-Type header. The header will be re-written in place without the parameter or its value. All values will be quoted as necessary unless requote is False. Optional header specifies an alternative to the Content-Type header. Nr r� )r� r. r' r� rk re )rB r r� r� Z new_ctyper� r� r r r ry � s �zMessage.del_paramc C s� |� d�dkst�|�� dkr,| d= d| d< || vr@|| |< dS | j||d�}| |= || |< |dd� D ]\}}| �||||� qhdS ) aK Set the main type and subtype for the Content-Type header. type must be a string in the form "maintype/subtype", otherwise a ValueError is raised. This method replaces the Content-Type header, keeping all the parameters in place. If requote is False, this leaves the existing header's quoting as is. Otherwise, the parameters will be quoted (the default). An alternative header can be specified in the header argument. When the Content-Type header is set, we'll always also add a MIME-Version header. r� r r� z mime-versionrw rv Nr� )r, r� r. r� r{ )rB rd r� r� r� r� r� r r r �set_type s zMessage.set_typec C sD t � }| �d|d�}||u r*| �d|d�}||u r6|S t�|��� S )a@ Return the filename associated with the payload if present. The filename is extracted from the Content-Disposition header's `filename' parameter, and it is unquoted. If that header is missing the `filename' parameter, this method falls back to looking for the `name' parameter. �filename�content-dispositionr r� )r� rg r �collapse_rfc2231_valuer )rB r� r� r� r r r � get_filename, s zMessage.get_filenamec C s, t � }| �d|�}||u r |S t�|��� S )z�Return the boundary associated with the payload if present. The boundary is extracted from the Content-Type header's `boundary' parameter, and it is unquoted. �boundary)r� rg r r� r- )rB r� r� r� r r r � get_boundary< s zMessage.get_boundaryc C s t � }| �|d�}||u r$t�d��g }d}|D ]:\}}|�� dkr\|�dd| f� d}q0|�||f� q0|s�|�dd| f� g }| jD ]z\} } | �� dkr�g } |D ].\} } | dkr�| �| � q�| �d| | f � q�t�| �} |�| j � | | �� q�|�| | f� q�|| _d S ) a� Set the boundary parameter in Content-Type to 'boundary'. This is subtly different than deleting the Content-Type header and adding a new one with a new boundary parameter via add_header(). The main difference is that using the set_boundary() method preserves the order of the Content-Type header in the original message. HeaderParseError is raised if the message has no Content-Type header. r� z No Content-Type header foundFr� z"%s"Tr r N) r� r� r ZHeaderParseErrorr. r0 r< r� rk r; r� )rB r� r� r� Z newparamsZfoundpZpkZpvr� �hr� r� r� r� r r r � set_boundaryI s2 zMessage.set_boundaryc C s� t � }| �d|�}||u r |S t|t�rp|d p2d}z |d �d�}t||�}W n ttfyn |d }Y n0 z|�d� W n ty� | Y S 0 |�� S )z�Return the charset parameter of the Content-Type header. The returned string is always coerced to lower case. If there is no Content-Type header, or if that header has no charset parameter, failobj is returned. r r zus-asciir r` ) r� rg r r r! r rh ri r. )rB r� r� r ZpcharsetrQ r r r �get_content_charsetw s zMessage.get_content_charsetc s � fdd�| � � D �S )a� Return a list containing the charset(s) used in this message. The returned list of items describes the Content-Type headers' charset parameter for this message and all the subparts in its payload. Each item will either be a string (the value of the charset parameter in the Content-Type header of that part) or the value of the 'failobj' parameter (defaults to None), if the part does not have a main MIME type of "text", or the charset is not defined. The list will contain one string for each part of the message, plus one for the container message (i.e. self), so that a non-multipart message will still return a list of length 1. c s g | ]}|� � ��qS r )r� )r� �part�r� r r r� � rb z(Message.get_charsets.<locals>.<listcomp>��walk)rB r� r r� r � get_charsets� s zMessage.get_charsetsc C s* | � d�}|du rdS t|�d �� }|S )z�Return the message's content-disposition if it exists, or None. The return values can be either 'inline', 'attachment' or None according to the rfc2183. r� Nr )re r r. )rB r& �c_dr r r �get_content_disposition� s z Message.get_content_dispositionr� )Fr N)FN)NF)N)N)N)Nr� T)Nr� T)rx TNr F)r� T)rx T)N)N)N)N)4�__name__� __module__� __qualname__�__doc__r rC rF rD rR rQ rU rX rY r] rp ru rt r| r} r� r� r� r� r� r� r� r� re r� r� r� rz r� r� r� r� r� r� r� r� rg r{ ry r� r� r� r� r� r� r� Zemail.iteratorsr� r r r r r o sf Z / � " � 3 . c s� e Zd Zd/� fdd� Zd0� fdd� Zdd� Zd d � Zd d � Zd1dd�Zh d�Z dd� Z dd� Z dd�dd�Z dd�dd�Z dd� Zd2d d �Zd3d d �Zd4d d!�Zdd"�d#d$�Zd%d&� Zd'd(� Zd)d*� Zd+d,� Zd-d.� Z� ZS )5�MIMEPartNc s( |d u rddl m} |}t� �|� d S )Nr )�default)Z email.policyr� �superrC )rB r; r� �� __class__r r rC � s zMIMEPart.__init__Fc s0 |du r| j n|}|du r |j}t� �|||�S )a Return the entire formatted message as a string. Optional 'unixfrom', when true, means include the Unix From_ envelope header. maxheaderlen is retained for backward compatibility with the base Message class, but defaults to None, meaning that the policy value for max_line_length controls the header maximum length. 'policy' is passed to the Generator instance used to serialize the message; if it is not specified the policy associated with the message instance is used. N)r; Zmax_line_lengthr� rD )rB rK rI r; r� r r rD � s zMIMEPart.as_stringc C s | j | jjdd�d�S )NT)�utf8�r; )rD r; ZclonerE r r r rF � s zMIMEPart.__str__c C s | � d�}|d u rdS |jdkS )Nr� F� attachment)re Zcontent_disposition)rB r� r r r � is_attachment� s zMIMEPart.is_attachmentc c s |� � r d S |�� �d�\}}|dkrB||v r>|�|�|fV d S |dksR| �� sVd S |dkr�|�� D ]}| �||�E d H qfd S d|v r�|�d�|fV d }|�d�}|r�|�� D ]}|d |kr�|} q�q�|d u r�|�� }|r�|d nd }|d u�r | �||�E d H d S )Nr� �text� multipart�relatedr2 � content-idr ) r� r� r� �indexrU � iter_parts� _find_bodyrg rp ) rB r� �preferencelist�maintype�subtypeZsubpart� candidater2 Zsubpartsr r r r� � s6 zMIMEPart._find_body�r� �html�plainc C sB t |�}d}| �| |�D ]$\}}||k r|}|}|dkr q>q|S )a Return best candidate mime part for display as 'body' of message. Do a depth first search, starting with self, looking for the first part matching each of the items in preferencelist, and return the part corresponding to the first item that has a match, or None if no items have a match. If 'related' is not included in preferencelist, consider the root part of any multipart/related encountered as a candidate match. Ignore parts with 'Content-Disposition: attachment'. Nr )r r� )rB r� Z best_prio�bodyZprior� r r r �get_body� s zMIMEPart.get_body> )r� r� )r� r� )r� � alternative)r� r� c c s" | � � �d�\}}|dks"|dkr&dS | �� }z |�� }W n tyN Y dS 0 |dkr�|dkr�| �d�}|r�d}g }|D ]"}|�d�|kr�d }qz|�|� qz|r�|E dH dS |�d � |E dH dS g } |D ]L}|� � �d�\}}||f| j v �r|� � �s|| v�r| �|� q�|V q�dS ) a Return an iterator over the non-main parts of a multipart. Skip the first of each occurrence of text/plain, text/html, multipart/related, or multipart/alternative in the multipart (unless they have a 'Content-Disposition: attachment' header) and include all remaining subparts in the returned iterator. When applied to a multipart/related, return all parts except the root part. Return an empty iterator when applied to a multipart/alternative or a non-multipart. r� r� r� Nr� r2 Fr� Tr ) r� r� rp r� rZ rg re r0 �pop� _body_typesr� ) rB r� r� r\ r� r2 r� Z attachmentsr� �seenr r r �iter_attachments sD �� zMIMEPart.iter_attachmentsc c s | � � r| �� E dH dS )z~Return an iterator over all immediate subparts of a multipart. Return an empty iterator for a non-multipart. N)rU rp rE r r r r� C s zMIMEPart.iter_parts)�content_managerc O s( |d u r| j j}|j| g|�R i |��S rV )r; r� � get_content�rB r� �args�kwr r r r� K s zMIMEPart.get_contentc O s, |d u r| j j}|j| g|�R i |�� d S rV )r; r� � set_contentr� r r r r� P s zMIMEPart.set_contentc C s� | � � dkr6| �� }||f }||v r6td�||���g }g }| jD ]4\}}|�� �d�rj|�||f� qD|�||f� qD|r�t| �| j d�} || _| j | _ | g| _ ng | _ || _d| | d< |d ur�| � d|� d S )Nr� zCannot convert {} to {}�content-r� z multipart/rx r� ) r� r� r� r� r< r. � startswithr0 rd r; r> r{ ) rB r� Zdisallowed_subtypesr� Zexisting_subtypeZ keep_headersZ part_headersr r& r� r r r �_make_multipartU s. � zMIMEPart._make_multipartc C s | � dd|� d S )Nr� )r� �mixed�r� �rB r� r r r � make_relatedp s zMIMEPart.make_relatedc C s | � dd|� d S )Nr� )r� r� r� r r r �make_alternatives s zMIMEPart.make_alternativec C s | � dd|� d S )Nr� r r� r� r r r � make_mixedv s zMIMEPart.make_mixed)�_dispc O sj | � � dks| �� |kr(t| d| �� t| �| jd�}|j|i |�� |r\d|vr\||d< | �|� d S )Nr� Zmake_r� r� zContent-Disposition)r� r� �getattrrd r; r� r] )rB Z_subtyper r� r� r� r r r �_add_multiparty s � zMIMEPart._add_multipartc O s | j dg|�R ddi|�� d S )Nr� r Zinline�r �rB r� r� r r r � add_related� s zMIMEPart.add_relatedc O s | j dg|�R i |�� d S )Nr� r r r r r �add_alternative� s zMIMEPart.add_alternativec O s | j dg|�R ddi|�� d S )Nr� r r� r r r r r �add_attachment� s zMIMEPart.add_attachmentc C s g | _ d | _d S rV �r< r> rE r r r �clear� s zMIMEPart.clearc C s dd� | j D �| _ d | _d S )Nc S s& g | ] \}}|� � �d �s||f�qS )r� )r. r� )r� �nr� r r r r� � s �z*MIMEPart.clear_content.<locals>.<listcomp>r rE r r r � clear_content� s zMIMEPart.clear_content)N)FNN)r� )N)N)N)r� r� r� rC rD rF r� r� r� r� r� r� r� r� r� r� r� r� r r r r r r � __classcell__r r r� r r� � s* 7 r� c s e Zd Z� fdd�Z� ZS )r c s& t � j|i |�� d| vr"d| d< d S )Nrv rw )r� r� r r� r r r� � s zEmailMessage.set_content)r� r� r� r� r r r r� r r � s )NT) r� �__all__�rerm rj �ior r Zemailr r Zemail._policybaser r r r? Zemail._encoded_wordsr rr r� �compiler# r r' r7 r9 r r� r r r r r �<module> s6 " N `
💾 保存
取消
保存为 UTF-8，换行统一为 LF