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u 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')
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d d „ Z d d „ Z d d „ Z d d „ Z d d „ Z e Z d d „ Z d d „ Z e Z d d „ Z d! S(" u _Databasec C s° | | _ | d | _ | d | _ | d | _ d | _ y t j | j d d d ƒ} Wn= t k
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ƒ | j ƒ d S( Nu .diru .datu .baku ru encodingu Latin-1u w( u _modeu _dirfileu _datfileu _bakfileu Noneu _indexu _iou openu IOErroru _chmodu closeu _update( u selfu filebasenameu modeu f( ( u- /opt/alt/python33/lib64/python3.3/dbm/dumb.pyu __init__/ s
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r< YnV XxH | D]@ } | j ƒ } t | ƒ \ } } | j d ƒ } | | j | × s u# _Database.items..( u _indexu keys( u self( ( u selfu- /opt/alt/python33/lib64/python3.3/dbm/dumb.pyu itemsÖ s u _Database.itemsc C s. t | t ƒ r! | j d ƒ } n | | j k S( Nu utf-8( u
isinstanceu stru encodeu _index( u selfu key( ( u- /opt/alt/python33/lib64/python3.3/dbm/dumb.pyu __contains__Ù s u _Database.__contains__c C s t | j j ƒ ƒ S( N( u iteru _indexu keys( u self( ( u- /opt/alt/python33/lib64/python3.3/dbm/dumb.pyu iterkeysÞ s u _Database.iterkeysc C s
t | j ƒ S( N( u lenu _index( u self( ( u- /opt/alt/python33/lib64/python3.3/dbm/dumb.pyu __len__â s u _Database.__len__c C s, | j ƒ d | _ | _ | _ | _ d S( N( u _commitu Noneu _indexu _datfileu _dirfileu _bakfile( u self( ( u- /opt/alt/python33/lib64/python3.3/dbm/dumb.pyu closeå s
u _Database.closec C s/ t | j d ƒ r+ | j j | | j ƒ n d S( Nu chmod( u hasattru _osu chmodu _mode( u selfu file( ( u- /opt/alt/python33/lib64/python3.3/dbm/dumb.pyu _chmodë s u _Database._chmodN( u __name__u
__module__u __qualname__u _osu _iou __init__u _updateu _commitu syncu __getitem__u _addvalu _setvalu _addkeyu __setitem__u __delitem__u keysu itemsu __contains__u iterkeysu __iter__u __len__u closeu __del__u _chmod( u
__locals__( ( u- /opt/alt/python33/lib64/python3.3/dbm/dumb.pyu _Database" s*
! u _Databasei¶ c C sM y t j d ƒ } t j | ƒ Wn t k
r4 Yn X| | @} t | | ƒ S( uö Open the database file, filename, and return corresponding object.
The flag argument, used to control how the database is opened in the
other DBM implementations, is ignored in the dbm.dumb module; the
database is always opened for update, and will be created if it does
not exist.
The optional mode argument is the UNIX mode of the file, used only when
the database has to be created. It defaults to octal code 0o666 (and
will be modified by the prevailing umask).
i ( u _osu umasku AttributeErroru _Database( u fileu flagu modeu um( ( u- /opt/alt/python33/lib64/python3.3/dbm/dumb.pyu openð s
( u __doc__u iou _iou osu _osu collectionsu __all__u
_BLOCKSIZEu IOErroru erroru MutableMappingu _Databaseu Noneu open( ( ( u- /opt/alt/python33/lib64/python3.3/dbm/dumb.pyu s Î