
Qa¸2c      sr     d  Z   d   e d ƒ Z  k Z  e i Z  d Z  e Z ! d f  d „  ƒ  YZ	  e
 e
 d „ Z d S(   s­  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')

s   osi   s	   _Databasec     s¡   ! # d „  Z  / d „  Z = d „  Z G d „  Z O d „  Z ^ d „  Z e d „  Z k d „  Z } d	 „  Z  d
 „  Z	 „ d „  Z
 ‡ d „  Z Š d „  Z RS(   Nc   s›   # $ | d |  _ % | d |  _ & | d |  _ ( y ) t |  i d ƒ } Wn+ * t j
 o + t |  i d ƒ } n X, | i ƒ  - |  i	 ƒ  d  S(   Ns   .dirs   .dats   .baks   rs   w(
   s   files   selfs   _dirfiles   _datfiles   _bakfiles   _opens   fs   IOErrors   closes   _update(   s   selfs   files   fs   /usr/lib/python1.4/dumbdbm.pys   __init__c   s½   / 0 h  |  _ 1 y 2 t |  i ƒ } Wn 3 t j
 o
 4 nw X6 xb 6 d oW 7 | i ƒ  } 8 | o 8 Pn 9 t | ƒ \ } \ } } : | | f |  i | <qJ W; | i ƒ  d  S(   Ni   (   s   selfs   _indexs   _opens   _dirfiles   fs   IOErrors   readlines   lines   evals   keys   poss   sizs   close(   s   selfs   fs   lines   keys   poss   sizs   /usr/lib/python1.4/dumbdbm.pys   _updatec   sï   = > y > t  i |  i ƒ Wn ? t  i j
 o
 ? n X@ y @ t  i |  i |  i ƒ Wn A t  i j
 o
 A n XB t |  i d ƒ } C xH |  i	 i
 ƒ  d C r2 \ } \ } } D | i d | | | f ƒ q¥ WE | i ƒ  d  S(   Ns   wi    s   %s, (%s, %s)
(   s   _oss   unlinks   selfs   _bakfiles   errors   renames   _dirfiles   _opens   fs   _indexs   itemss   keys   poss   sizs   writes   close(   s   selfs   fs   keys   poss   sizs   /usr/lib/python1.4/dumbdbm.pys   _commitc   sh   G H |  i | \ } } I t |  i d ƒ } J | i | ƒ K | i	 | ƒ } L | i ƒ  M | Sd  S(   Ns   rb(   s   selfs   _indexs   keys   poss   sizs   _opens   _datfiles   fs   seeks   reads   dats   close(   s   selfs   keys   poss   sizs   fs   dats   /usr/lib/python1.4/dumbdbm.pys   __getitem__c   s¨   O P t  |  i d ƒ } Q | i d d ƒ R | i ƒ  } V | t d t t } W | i	 d | | ƒ X | } Z | i	 | ƒ [ | i ƒ  \ | t | ƒ f Sd  S(   Ns   rb+i    i   i   s    (   s   _opens   selfs   _datfiles   fs   seeks   tells   poss
   _BLOCKSIZEs   nposs   writes   vals   closes   len(   s   selfs   vals   fs   poss   nposs   /usr/lib/python1.4/dumbdbm.pys   _addvalc   s\   ^ _ t  |  i d ƒ } ` | i | ƒ a | i | ƒ b | i ƒ  c | t	 | ƒ f Sd  S(   Ns   rb+(
   s   _opens   selfs   _datfiles   fs   seeks   poss   writes   vals   closes   len(   s   selfs   poss   vals   fs   /usr/lib/python1.4/dumbdbm.pys   _setvalc   sk   e | \ } } f | | f |  i | <g t |  i d ƒ } h | i d | | | f ƒ i | i	 ƒ  d  S(   Ns   as   %s, (%s, %s)
(
   s   poss   sizs   selfs   _indexs   keys   _opens   _dirfiles   fs   writes   close(   s   selfs   keys    s   poss   sizs   fs   /usr/lib/python1.4/dumbdbm.pys   _addkeyc   si  k l t  | ƒ t  d ƒ j o t  | ƒ j n o m t d ‚ n n |  i i | ƒ o5 o |  i | ƒ \ } } p |  i
 | | | f ƒ nÓ r |  i | \ } } s | t d t } t t | ƒ t d t } u | | j o5 v |  i | | ƒ \ } } w | | f |  i | <n/ y |  i | ƒ \ } } z | | f |  i | <{ |  i
 | | | f ƒ d  S(   Ns    s   keys and values must be stringsi   (   s   types   keys   vals	   TypeErrors   selfs   _indexs   has_keys   _addvals   poss   sizs   _addkeys
   _BLOCKSIZEs	   oldblockss   lens	   newblockss   _setval(   s   selfs   keys   vals   poss   sizs	   oldblockss	   newblockss   /usr/lib/python1.4/dumbdbm.pys   __setitem__c   s!   } ~ |  i | = |  i ƒ  d  S(   N(   s   selfs   _indexs   keys   _commit(   s   selfs   keys   /usr/lib/python1.4/dumbdbm.pys   __delitem__c   s    ‚ |  i i ƒ  Sd  S(   N(   s   selfs   _indexs   keys(   s   selfs   /usr/lib/python1.4/dumbdbm.pys   keysc   s   „ … |  i i | ƒ Sd  S(   N(   s   selfs   _indexs   has_keys   key(   s   selfs   keys   /usr/lib/python1.4/dumbdbm.pys   has_keyc   s   ‡ ˆ t  |  i ƒ Sd  S(   N(   s   lens   selfs   _index(   s   selfs   /usr/lib/python1.4/dumbdbm.pys   __len__c   s-   Š ‹ t  |  _ Œ t  |  _ |  _ |  _ d  S(   N(   s   Nones   selfs   _indexs   _datfiles   _dirfiles   _bakfile(   s   selfs   /usr/lib/python1.4/dumbdbm.pys   close(   s   __init__s   _updates   _commits   __getitem__s   _addvals   _setvals   _addkeys   __setitem__s   __delitem__s   keyss   has_keys   __len__s   close(    s   /usr/lib/python1.4/dumbdbm.pys	   _Databasec   s    ‘ t  |  ƒ Sd  S(   N(   s	   _Databases   file(   s   files   flags   modes   /usr/lib/python1.4/dumbdbm.pys   openN(   s   __doc__s
   __import__s   _oss   __builtin__s   opens   _opens
   _BLOCKSIZEs   IOErrors   errors	   _Databases   None(    s   /usr/lib/python1.4/dumbdbm.pys   ?