OS : Linux
PHP Version : 7.4.33
Software : Apache/2.4.6 (CentOS) PHP/7.4.33
Information System : Linux apprendre2 3.10.0-1160.119.1.el7.x86_64 #1 SMP Tue Jun 4 14:43:51 UTC 2024 x86_64
Disable Function : 3
\. @ sT d Z ddlZddlZddlZddlZddgZdZ e
Z G dd dej Z
d d
dZdS ) a A dumb and slow but simple dbm clone.
For database spam, spam.dir contains the index (a text file),
spam.bak *may* contain a backup of the index (also a text file),
while spam.dat contains the data (a binary file).
XXX TO DO:
- seems to contain a bug when updating...
- reclaim free space (currently, space once occupied by deleted or expanded
items is never reused)
- support concurrent access (currently, if two processes take turns making
updates, they can mess up the index)
- support efficient access to large databases (currently, the whole index
is read when the database is opened, and some updates rewrite the whole index)
- support opening for read-only (flag = 'm')
Nerroropeni c @ s e Zd ZeZeZd+ddZdd Zdd Zdd ZeZ d
d Z
d d
Z dd Z dd Z
dd Zdd Zdd Zdd Zdd Zd d Zd d ZeZd d! Zd"d# ZeZd$d% Zd&d' Zd(d) Zd*S ), _Databasecc C sJ || _ |dk| _|d | _|d | _|d | _d | _| j| | j d S )Nrz.dirz.datz.bak)_mode _readonly_dirfile_datfile_bakfile_index_create_update)selfZ filebasenamemodeflag r /usr/lib64/python3.6/dumb.py__init__0 s
z_Database.__init__c C s |dkrFx<| j | j| jfD ](}ytj| W q tk
r@ Y qX qW ytj| j ddd}W n^ tk
r |d krdd l}|j dt
dd tj| j d
dd}| j | j W d Q R X Y n
X |j d S ) Nnr zLatin-1)encodingr r zIThe database file is missing, the semantics of the 'c' flag will be used. )
stacklevelw)r r )
r
r r _osremoveOSError_ior warningswarnDeprecationWarning_chmodclose)r r filenamefr r r r r
I s
z_Database._createc C s i | _ ytj| jddd}W n tk
r: | j | _Y nPX d| _|> x6|D ].}|j }tj |\}}|j
d}|| j |< qNW W d Q R X d S )Nr zLatin-1)r F) r r r r r r _modifiedrstrip_astZ literal_evalencode)r r$ linekeypos_and_siz_pairr r r r _ s
z_Database._updatec C s | j d ks| j rd S y| jj| j W n tk
r< Y nX y| jj| j| j W n tk
rh Y nX | jj | jdddF}| j
| j x2| j j D ]$\}}d|j d|f }|j
| qW W d Q R X d S )Nr zLatin-1)r z%r, %r
)r r% r unlinkr r renamer r r r! itemsdecodewrite)r r$ r* r+ entryr r r _commitq s z_Database._commitc C s | j d krtdd S )Nz"DBM object has already been closed)r r )r r r r _verify_open s
z_Database._verify_openc C s\ t |tr|jd}| j | j| \}}tj| jd}|j| |j |}W d Q R X |S )Nzutf-8rb)
isinstancestrr( r3 r r r r
seekread)r r* possizr$ Zdatr r r __getitem__ s
z_Database.__getitem__c C sr t j| jdR}|jdd t|j }|t d t t }|jd|| |}|j| W d Q R X |t|fS )Nzrb+r ) r r r
r7 inttell
_BLOCKSIZEr0 len)r valr$ r9 Znposr r r _addval s z_Database._addvalc
C s: t j| jd}|j| |j| W d Q R X |t|fS )Nzrb+)r r r
r7 r0 rB )r r9 rC r$ r r r _setval s
z_Database._setvalc C sP || j |< tj| jddd*}| j| j |jd|jd|f W d Q R X d S )NazLatin-1)r z%r, %r
)r r r r r! r0 r/ )r r* r+ r$ r r r _addkey s
z_Database._addkeyc C s | j r dd l}|jdtdd t|tr4|jd}nt|ttfsJt dt|tr`|jd}nt|ttfsvt d| j
d| _ || j kr| j
|| j| n^| j | \}}|t d t }t|t d t }||kr| j||| j |< n| j|| j |< d S )
Nr z'The database is opened for reading onlyr< )r zutf-8z keys must be bytes or stringsz values must be bytes or stringsTr= )r r r r r5 r6 r( bytes bytearray TypeErrorr3 r% r rG rD rA rB rE )r r* rC r r9 r: Z oldblocksZ newblocksr r r __setitem__ s,
z_Database.__setitem__c C sT | j r dd l}|jdtdd t|tr2|jd}| j d| _| j |= | j
d S )Nr z'The database is opened for reading onlyr< )r zutf-8T) r r r r r5 r6 r( r3 r% r r2 )r r* r r r r __delitem__ s
z_Database.__delitem__c C s. y
t | jS tk
r( tdd Y nX d S )Nz"DBM object has already been closed)listr rJ r )r r r r keys s
z_Database.keysc s j fdd jj D S )Nc s g | ]}| | fqS r r ).0r* )r r r