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Basic line editing support.
@author: Jp Calderone
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�Loggingz�
Wrapper which logs attribute lookups.
This was useful in debugging something, I guess. I forget what.
It can probably be deleted or moved somewhere more appropriate.
Nothing special going on here, really.
c C sF || _ t�|j�}t�|d�}|d t|< t|d t|� d�| _d S )Nr � �-�w) �originalr Zqual� __class__� _counters�get�open�str�_logFile)�selfr �key�count� r �8/usr/lib/python3/dist-packages/twisted/conch/recvline.py�__init__ s
zLogging.__init__c s t tt| ��d��S �Nr )r �superr �__getattribute__�r �r
r r �__str__% s zLogging.__str__c s t tt| ��d��S r )�reprr r r r r r r �__repr__) s zLogging.__repr__c s8 t t| ��d�}t t| ��d�}|�|d � t||�S )Nr r �
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S ) �TransportSequencea_
An L{ITerminalTransport} implementation which forwards calls to
one or more other L{ITerminalTransport}s.
This is a cheap way for servers to keep track of the state they
expect the client to see, since all terminal manipulations can be
send to the real client and to a terminal emulator that lives in
the server process.
)s UP_ARROWs
DOWN_ARROWs RIGHT_ARROWs
LEFT_ARROWs HOMEs INSERTs DELETEs ENDs PGUPs PGDNs F1s F2s F3s F4s F5s F6s F7s F8s F9s F10s F11s F12s = object()�ascii� � c G s |s t d��|| _d S )Nz7Cannot construct a TransportSequence with no transports)�AssertionError�
transports)r r/ r r r r L s �zTransportSequence.__init__zldef %s(self, *a, **kw):
for tpt in self.transports:
result = tpt.%s(*a, **kw)
return result
N)r% r& r' r( �keyIDZ execBytes�decodeZexecStr�exec�TAB� BACKSPACEr r �ITerminalTransport�methodr r r r r* 5 s
�r* c s( e Zd ZdZ� fdd�Zdd� Z� ZS )�LocalTerminalBufferMixina�
A mixin for RecvLine subclasses which records the state of the terminal.
This is accomplished by performing all L{ITerminalTransport} operations on both
the transport passed to makeConnection and an instance of helper.TerminalBuffer.
@ivar terminalCopy: A L{helper.TerminalBuffer} instance which efforts
will be made to keep up to date with the actual terminal
associated with this protocol instance.
c s, t �� | _| j�� tt| ��t|| j��S �N)r ZTerminalBuffer� terminalCopy�connectionMader r7 �makeConnectionr* )r Z transportr r r r; g s
�z'LocalTerminalBufferMixin.makeConnectionc C s
t | j�S r8 )r r9 r r r r r n s z LocalTerminalBufferMixin.__str__)r% r& r' r( r; r r) r r r r r7 [ s r7 c @ s� e Zd ZdZdZdZdZdZdZe j
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L{TerminalProtocol} which adds line editing features.
Clients will be prompted for lines of input with all the usual
features: character echoing, left and right arrow support for
moving the cursor to different areas of the line buffer, backspace
and delete for removing characters, and insert for toggling
between typeover and insert mode. Tabs will be expanded to enough
spaces to move the cursor to the next tabstop (every four
characters by default). Enter causes the line buffer to be
cleared and the line to be passed to the lineReceived() method
which, by default, does nothing. Subclasses are responsible for
redrawing the input prompt (this will probably change).
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LEFT_ARROW� handle_LEFTZ RIGHT_ARROW� handle_RIGHTr3 �
handle_TAB�
handle_RETURNr4 �handle_BACKSPACEZDELETE�
handle_DELETEZINSERT�
handle_INSERT�HOME� handle_HOMEZEND�
handle_END� keyHandlers�initializeScreen�r �tr r r r: � s2 �zRecvLine.connectionMadec C s* | j �� | j �| j| j � | �� d S r8 )rD �resetr" �ps�pn�
setInsertModer r r r rP � s
zRecvLine.initializeScreenc C s( d� | j�}|d | j� || jd � fS �N� )�joinrB rC )r �sr r r �currentLineBuffer� s zRecvLine.currentLineBufferc C s d| _ | j�tjjg� d S )N�insert)�moderD ZsetModesr �modes�IRMr r r r rV � s zRecvLine.setInsertModec C s d| _ | j�tjjg� d S )N�typeover)r] rD Z
resetModesr r^ r_ r r r r �setTypeoverMode� s zRecvLine.setTypeoverModec C s$ | j �| j| j d�| j� � dS )z�
Write a line containing the current input prompt and the current line
buffer at the current cursor position.
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drawInputLine� s zRecvLine.drawInputLinec C s, | j �� | j �� || _|| _| �� d S r8 )rD Z eraseDisplayZ
cursorHome�width�heightrb )r rc rd r r r � terminalSize� s
zRecvLine.terminalSizec C s d S r8 r )r �seqr r r �unhandledControlSequence� s z!RecvLine.unhandledControlSequencec C sH | j �|�}|d k r |� n(|| jkr4| �|d� nt�d|f � d S )NFz Received unhandled keyID: %r)rO r �_printableChars�characterReceivedr �msg)r r0 Zmodifier�mr r r �keystrokeReceived� s
zRecvLine.keystrokeReceivedc C sR | j dkr | j�| j|� n|g| j| j| jd �< | jd7 _| j�|� d S )Nr\ r )r] rB r\ rC rD r" )r �chZmoreCharactersComingr r r ri � s
zRecvLine.characterReceivedc C sH | j t| j�| j }| j�|� | j|7 _| j�td| �� d S )N� )�TABSTOP�lenrB rD �
cursorForwardrC �extendr )r �nr r r rG � s zRecvLine.handle_TABc C s& | j dkr"| j d8 _ | j�� d S �Nr r �rC rD �cursorBackwardr r r r rE � s
zRecvLine.handle_LEFTc C s, | j t| j�k r(| j d7 _ | j�� d S )Nr )rC rp rB rD rq r r r r rF � s zRecvLine.handle_RIGHTc C s | j r| j�| j � d| _ d S �Nr ru r r r r rM s zRecvLine.handle_HOMEc C s0 t | j�| j }|r,| j�|� t | j�| _d S r8 )rp rB rC rD rq )r �offsetr r r rN
s zRecvLine.handle_ENDc C s: | j dkr6| j d8 _ | j| j = | j�� | j�� d S rt )rC rB rD rv �deleteCharacterr r r r rI s
zRecvLine.handle_BACKSPACEc C s( | j t| j�k r$| j| j = | j�� d S r8 )rC rp rB rD ry r r r r rJ s
zRecvLine.handle_DELETEc C s0 d� | j�}g | _d| _| j�� | �|� d S )NrX r )rY rB rC rD ZnextLine� lineReceived�r �liner r r rH s
zRecvLine.handle_RETURNc C s. | j dkst�| j dkr"| �� n| �� d S )N)r` r\ r` )r] r. rV ra r r r r rK ' s
zRecvLine.handle_INSERTc C s d S r8 r r{ r r r rz / s zRecvLine.lineReceivedN)!r% r& r' r( rc rd ro rT rU �stringZ printable�encoderh r: rP r[ rV ra rb re rg rl ri rG rE rF rM rN rI rJ rH rK rz r r r r r< s s6
r< c @ s@ e Zd ZdZdd� Zdd� Zdd� Zdd � Zd
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L{TerminalProtocol} which adds both basic line-editing features and input history.
Everything supported by L{RecvLine} is also supported by this class. In addition, the
up and down arrows traverse the input history. Each received line is automatically
added to the end of the input history.
c C s< t �| � g | _d| _| j}| j�|j| j|j | j
i� d S rw ) r< r: � historyLines�historyPositionrD rO �updateZUP_ARROW� handle_UPZ
DOWN_ARROW� handle_DOWNrQ r r r r: < s
�z HistoricRecvLine.connectionMadec C s& t | j�}|d | j� || jd � fS r8 )�tupler� r� )r �br r r �currentHistoryBufferG s
z%HistoricRecvLine.currentHistoryBufferc C s> |r:t |d d� �D ]}| �|d� q| �|dd � d� d S )N���TF)r ri )r Zbufrm r r r �_deliverBufferL s z HistoricRecvLine._deliverBufferc C sp | j r*| jt| j�kr*| j�d�| j �� | jdkrl| �� | j�� | jd8 _g | _ | � | j| j � d S )NrX r r )
rB r� rp r� �appendrY rM rD �eraseToLineEndr� r r r r r� S s
zHistoricRecvLine.handle_UPc C s| | j t| j�d k rN| �� | j�� | j d7 _ g | _| �| j| j � n*| �� | j�� t| j�| _ g | _d| _d S )Nr r ) r� rp r� rM rD r� rB r� rC r r r r r� ` s
z HistoricRecvLine.handle_DOWNc C s0 | j r| j�d�| j �� t| j�| _t�| �S rW )rB r� r� rY rp r� r< rH r r r r rH r s z HistoricRecvLine.handle_RETURNN)
r% r& r' r( r: r� r� r� r� rH r r r r r 4 s
r )r( r} Zzope.interfacer Ztwisted.conch.insultsr r Ztwisted.pythonr r Ztwisted.python.compatr r �objectr r5 r* r7 ZTerminalProtocolr< r r r r r �<module> s % B