ó
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X\¬Qc @ s5 d Z d d l Z d d l Z d d d YZ d S( s
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File-like objects that read from or write to a bsddb record.
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This implements (nearly) all stdio methods.
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f = DBRecIO(db, key, txn=None)
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f.close() # explicitly release resources held
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flag = f.isatty() # always false
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pos = f.tell() # get current position
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f.seek(pos) # set current position
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f.seek(pos, mode) # mode 0: absolute; 1: relative; 2: relative to EOF
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buf = f.read() # read until EOF
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buf = f.read(n) # read up to n bytes
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f.truncate([size]) # truncate file at to at most size (default: current pos)
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f.write(buf) # write at current position
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f.writelines(list) # for line in list: f.write(line)
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Notes:
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- fileno() is left unimplemented so that code which uses it triggers
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an exception early.
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- There's a simple test set (see end of this file) - not yet updated
|
for DBRecIO.
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- readline() is not implemented yet.
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|
|
From:
|
Itamar Shtull-Trauring <itamar@maxnm.com>
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iÿÿÿÿNt DBRecIOc B st e Z d d Z d Z d Z d d Z d Z d d Z d Z d d Z
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d
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Z d Z d Z RS( c C sC | | _ | | _ | | _ d | _ d | _ d | _ d | _ d S( Ni ( t dbt keyt txnt Nonet lent post closedt softspace( t selfR R R ( ( sU /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/bsddb/dbrecio.pyt __init__# s c C s% | j s! d | _ | ` | ` n d S( Ni ( R R R ( R ( ( sU /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/bsddb/dbrecio.pyt close, s c C s | j r t d n d S( Ns I/O operation on closed filei ( R t
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ValueError( R ( ( sU /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/bsddb/dbrecio.pyt isatty1 s i c C sc | j r t d n | d k r1 | | j } n | d k rM | | j } n t d | | _ d S( Ns I/O operation on closed filei i i ( R R R R t max( R R t mode( ( sU /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/bsddb/dbrecio.pyt seek6 s c C s | j r t d n | j S( Ns I/O operation on closed file( R R R ( R ( ( sU /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/bsddb/dbrecio.pyt tell? s iÿÿÿÿc C s | j r t d n | d k r- | j } n t | j | | j } | | j } | j j | j d | j d | d | j } | | _ | S( Ns I/O operation on closed filei R t dlent doff( R R R t minR R t getR R ( R t nt newposR t r( ( sU /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/bsddb/dbrecio.pyt readD s - s|
|
def readline(self, length=None):
|
if self.closed:
|
raise ValueError, "I/O operation on closed file"
|
if self.buflist:
|
self.buf = self.buf + string.joinfields(self.buflist, '')
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self.buflist = []
|
i = string.find(self.buf, '
|
', self.pos)
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if i < 0:
|
newpos = self.len
|
else:
|
newpos = i+1
|
if length is not None:
|
if self.pos + length < newpos:
|
newpos = self.pos + length
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r = self.buf[self.pos:newpos]
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self.pos = newpos
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return r
|
|
def readlines(self, sizehint = 0):
|
total = 0
|
lines = []
|
line = self.readline()
|
while line:
|
lines.append(line)
|
total += len(line)
|
if 0 < sizehint <= total:
|
break
|
line = self.readline()
|
return lines
|
c C s | j r t d n | d k r- | j } n< | d k rN t t j d n | | j k ri | | _ n | j j | j d d | j
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d | j | d | d S( Ns I/O operation on closed filei s Negative size not allowedt R R R ( R R R R t IOErrort errnot EINVALR t putR R R ( R t size( ( sU /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/bsddb/dbrecio.pyt truncater s c C s² | j r t d n | s d S| j | j k r^ | j j d | j | j | j | _ n | j t | } | j j | j | d | j d t | d | j | | _ d S( Ns I/O operation on closed filet R R R (
|
R R R R t buflistt appendR R R R ( R t sR ( ( sU /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/bsddb/dbrecio.pyt write~ s 4c C s | j t j | d d S( NR ( R% t stringt
|
joinfields( R t list( ( sU /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/bsddb/dbrecio.pyt
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writelines s c C s | j r t d n d S( Ns I/O operation on closed file( R R ( R ( ( sU /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/bsddb/dbrecio.pyt flush s N( t __name__t
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__module__R R
|
R R R R R t _DBRecIO__fixmeR R% R) R* ( ( ( sU /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/bsddb/dbrecio.pyR " s , ( ( t __doc__R R& R ( ( ( sU /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/bsddb/dbrecio.pyt <module> s
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