B
    2*™\#  ã               @   sÚ   d Z ddlZddlZddlZddlZddlZdddgZG dd„ deƒZddd	„Z	dd
d„Z
ddd„Zddd„Zdd„ ZyddlZejejf W nB eefk
rÐ   yddlZW n ek
rÆ   eZY nX e
ZY nX e	ZdS )a‡  Utilities to get a password and/or the current user name.

getpass(prompt[, stream]) - Prompt for a password, with echo turned off.
getuser() - Get the user name from the environment or password database.

GetPassWarning - This UserWarning is issued when getpass() cannot prevent
                 echoing of the password contents while reading.

On Windows, the msvcrt module will be used.

é    NÚgetpassÚgetuserÚGetPassWarningc               @   s   e Zd ZdS )r   N)Ú__name__Ú
__module__Ú__qualname__© r   r   ú2C:\ALexclude\prg\programme\Python37\Lib\getpass.pyr      s    ú
Password: c             C   s´  d}t  ¡ œ}yJt dtjtjB ¡}t |d¡}| |¡ t 	|¡}| |¡ |sX|}W np t
k
rÊ } zR| ¡  ytj ¡ }W n& ttfk
r¨   d}t| |ƒ}Y nX tj}|sºtj}W dd}~X Y nX |dk	rœy„t |¡}|dd… }	|	d  tj M  < tj}
ttdƒr|
tjO }
z t ||
|	¡ t| ||d}W dt ||
|¡ | ¡  X W n@ tjk
rš   |dk	rz‚ ||k	rŒ| ¡  t| |ƒ}Y nX | d¡ |S Q R X dS )a  Prompt for a password, with echo turned off.

    Args:
      prompt: Written on stream to ask for the input.  Default: 'Password: '
      stream: A writable file object to display the prompt.  Defaults to
              the tty.  If no tty is available defaults to sys.stderr.
    Returns:
      The seKr3t input.
    Raises:
      EOFError: If our input tty or stdin was closed.
      GetPassWarning: When we were unable to turn echo off on the input.

    Always restores terminal settings before returning.
    Nz/dev/ttyzw+é   ÚTCSASOFT)ÚinputÚ
)Ú
contextlibÚ	ExitStackÚosÚopenÚO_RDWRZO_NOCTTYÚioÚFileIOÚenter_contextÚTextIOWrapperÚOSErrorÚcloseÚsysÚstdinÚfilenoÚAttributeErrorÚ
ValueErrorÚfallback_getpassÚstderrÚtermiosÚ	tcgetattrZECHOZ	TCSAFLUSHÚhasattrr   Ú	tcsetattrÚ
_raw_inputÚflushÚerrorÚwrite)ÚpromptÚstreamZpasswdÚstackÚfdZttyr   ÚeÚoldÚnewZtcsetattr_flagsr   r   r	   Úunix_getpass   sR    








r0   c             C   s”   t jt jk	rt| |ƒS x| D ]}t |¡ qW d}xHt ¡ }|dksL|dkrNP |dkrZt‚|dkrp|dd… }q4|| }q4W t d¡ t d¡ |S )z9Prompt for password with echo off, using Windows getch().Ú úr   úúNéÿÿÿÿ)r   r   Ú	__stdin__r   ÚmsvcrtZputwchZgetwchÚKeyboardInterrupt)r)   r*   ÚcZpwr   r   r	   Úwin_getpassa   s"    



r:   c             C   s0   t jdtdd |stj}td|d t| |ƒS )Nz%Can not control echo on the terminal.é   )Ú
stacklevelz&Warning: Password input may be echoed.)Úfile)ÚwarningsÚwarnr   r   r    Úprintr%   )r)   r*   r   r   r	   r   x   s    r   r1   c             C   sœ   |s
t j}|st j}t| ƒ} | rpy| | ¡ W n8 tk
rf   |  |jd¡} |  |j¡} | | ¡ Y nX | 	¡  | 
¡ }|s€t‚|d dkr˜|d d… }|S )NÚreplacer5   r   )r   r    r   Ústrr(   ÚUnicodeEncodeErrorÚencodeÚencodingÚdecoder&   ÚreadlineÚEOFError)r)   r*   r   Úliner   r   r	   r%      s&    r%   c              C   s<   x dD ]} t j | ¡}|r|S qW ddl}| t  ¡ ¡d S )zÂGet the username from the environment or password database.

    First try various environment variables, then the password
    database.  This works on Windows as long as USERNAME is set.

    )ZLOGNAMEZUSERZLNAMEZUSERNAMEr   N)r   ÚenvironÚgetÚpwdZgetpwuidÚgetuid)ÚnameÚuserrL   r   r   r	   r   š   s    
)r
   N)r
   N)r
   N)r1   NN)Ú__doc__r   r   r   r   r>   Ú__all__ÚUserWarningr   r0   r:   r   r%   r   r!   r"   r$   ÚImportErrorr   r7   r   r   r   r   r	   Ú<module>   s,   

D

	


