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python2.7
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bsddb
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dbrecio.pyo
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� �mec@s5dZddlZddlZddd��YZdS(s� File-like objects that read from or write to a bsddb record. This implements (nearly) all stdio methods. f = DBRecIO(db, key, txn=None) f.close() # explicitly release resources held flag = f.isatty() # always false pos = f.tell() # get current position f.seek(pos) # set current position f.seek(pos, mode) # mode 0: absolute; 1: relative; 2: relative to EOF buf = f.read() # read until EOF buf = f.read(n) # read up to n bytes f.truncate([size]) # truncate file at to at most size (default: current pos) f.write(buf) # write at current position f.writelines(list) # for line in list: f.write(line) Notes: - fileno() is left unimplemented so that code which uses it triggers an exception early. - There's a simple test set (see end of this file) - not yet updated for DBRecIO. - readline() is not implemented yet. From: Itamar Shtull-Trauring <itamar@maxnm.com> i����NtDBRecIOcBsteZd d�Zd�Zd�Zdd�Zd�Zdd�ZdZ d d �Z d �Zd�Zd�Z RS(cCsC||_||_||_d|_d|_d|_d|_dS(Ni(tdbtkeyttxntNonetlentpostclosedt softspace(tselfRRR((s%/usr/lib64/python2.7/bsddb/dbrecio.pyt__init__#s cCs%|js!d|_|`|`ndS(Ni(RRR(R ((s%/usr/lib64/python2.7/bsddb/dbrecio.pytclose,s cCs|jrtd�ndS(NsI/O operation on closed filei(Rt ValueError(R ((s%/usr/lib64/python2.7/bsddb/dbrecio.pytisatty1s icCsc|jrtd�n|dkr1||j}n|dkrM||j}ntd|�|_dS(NsI/O operation on closed fileiii(RRRRtmax(R Rtmode((s%/usr/lib64/python2.7/bsddb/dbrecio.pytseek6s cCs|jrtd�n|jS(NsI/O operation on closed file(RRR(R ((s%/usr/lib64/python2.7/bsddb/dbrecio.pyttell?s i����cCs�|jrtd�n|dkr-|j}nt|j||j�}||j}|jj|jd|jd|d|j�}||_|S(NsI/O operation on closed fileiRtdlentdoff( RRRtminRRtgetRR(R tntnewposRtr((s%/usr/lib64/python2.7/bsddb/dbrecio.pytreadDs - 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, '') self.buflist = [] i = string.find(self.buf, ' ', self.pos) if i < 0: newpos = self.len else: newpos = i+1 if length is not None: if self.pos + length < newpos: newpos = self.pos + length r = self.buf[self.pos:newpos] self.pos = newpos 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 Cs�|jrtd�n|dkr-|j}n<|dkrNttjd��n||jkri||_n|jj|j dd|j d|j|d|�dS(NsI/O operation on closed fileisNegative size not allowedtRRR(RRRRtIOErrorterrnotEINVALRtputRRR(R tsize((s%/usr/lib64/python2.7/bsddb/dbrecio.pyttruncaters c Cs�|jrtd�n|sdS|j|jkr^|jjd|j|j�|j|_n|jt|�}|jj|j|d|j dt|�d|j�||_dS(NsI/O operation on closed filetRRR( RRRRtbuflisttappendRRRR(R tsR((s%/usr/lib64/python2.7/bsddb/dbrecio.pytwrite~s 4cCs|jtj|d��dS(NR(R%tstringt joinfields(R tlist((s%/usr/lib64/python2.7/bsddb/dbrecio.pyt writelines�scCs|jrtd�ndS(NsI/O operation on closed file(RR(R ((s%/usr/lib64/python2.7/bsddb/dbrecio.pytflush�s N(t__name__t __module__RR RR RRRt_DBRecIO__fixmeR R%R)R*(((s%/usr/lib64/python2.7/bsddb/dbrecio.pyR"s , ((t__doc__RR&R(((s%/usr/lib64/python2.7/bsddb/dbrecio.pyt<module>s�
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