-í
æ¶<c       s}   d  Z  d k Z y d k l Z Wn e j
 o d Z n Xd g Z d f  d „  ƒ  YZ d „  Z e d j o e ƒ  n d S(   s	  File-like objects that read from or write to a string buffer.

This implements (nearly) all stdio methods.

f = StringIO()      # ready for writing
f = StringIO(buf)   # ready for reading
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
buf = f.readline()  # read until end of line ('
') or EOF
list = f.readlines()# list of f.readline() results until EOF
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)
f.getvalue()        # return whole file's contents as a string

Notes:
- Using a real file is often faster (but less convenient).
- There's also a much faster implementation in C, called cStringIO, but
  it's not subclassable.
- fileno() is left unimplemented so that code which uses it triggers
  an exception early.
- Seeking far beyond EOF and then writing will insert real null
  bytes that occupy space in the buffer.
- There's a simple test set (see end of this file).
N(   s   EINVALi   s   StringIOc      s˜   t  Z d d „ Z d „  Z d „  Z d „  Z d d „ Z d „  Z d	 d
 „ Z e	 d „ Z
 d d „ Z e	 d „ Z d „  Z d „  Z d „  Z d „  Z RS(   Ns    c    sf   t  | ƒ t i j o t | ƒ } n | |  _ t | ƒ |  _ g  |  _ d |  _ d |  _	 d |  _
 d  S(   Ni    (   s   types   bufs   typess   StringTypess   strs   selfs   lens   buflists   poss   closeds	   softspace(   s   selfs   buf(    (    s   /usr/lib/python2.2/StringIO.pys   __init__( s    				c    s   t  |  i d ƒ Sd  S(   Ns    (   s   iters   selfs   readline(   s   self(    (    s   /usr/lib/python2.2/StringIO.pys   __iter__3 s    c    s(   |  i o d |  _ |  ` |  ` n d  S(   Ni   (   s   selfs   closeds   bufs   pos(   s   self(    (    s   /usr/lib/python2.2/StringIO.pys   close6 s    	c    s   |  i o t d ‚ n d Sd  S(   Ns   I/O operation on closed filei    (   s   selfs   closeds
   ValueError(   s   self(    (    s   /usr/lib/python2.2/StringIO.pys   isatty; s    
i    c    s›   |  i o t d ‚ n |  i o( |  i d i |  i ƒ 7_ g  |  _ n | d j o | |  i 7} n | d j o | |  i 7} n t	 d | ƒ |  _ d  S(   Ns   I/O operation on closed files    i   i   i    (
   s   selfs   closeds
   ValueErrors   buflists   bufs   joins   modes   poss   lens   max(   s   selfs   poss   mode(    (    s   /usr/lib/python2.2/StringIO.pys   seek@ s    

c    s"   |  i o t d ‚ n |  i Sd  S(   Ns   I/O operation on closed file(   s   selfs   closeds
   ValueErrors   pos(   s   self(    (    s   /usr/lib/python2.2/StringIO.pys   tellL s    
iÿÿÿÿc    s    |  i o t d ‚ n |  i o( |  i d i |  i ƒ 7_ g  |  _ n | d j  o |  i } n t	 |  i
 | |  i ƒ } |  i |  i
 | !} | |  _
 | Sd  S(   Ns   I/O operation on closed files    i    (   s   selfs   closeds
   ValueErrors   buflists   bufs   joins   ns   lens   newposs   mins   poss   r(   s   selfs   ns   rs   newpos(    (    s   /usr/lib/python2.2/StringIO.pys   readQ s    

	c    sß   |  i o t d ‚ n |  i o( |  i d i |  i ƒ 7_ g  |  _ n |  i i d |  i ƒ } | d j  o |  i	 } n | d } | t j	 o) |  i | | j  o |  i | } n n |  i |  i | !} | |  _ | Sd  S(   Ns   I/O operation on closed files    s   
i    i   (   s   selfs   closeds
   ValueErrors   buflists   bufs   joins   finds   poss   is   lens   newposs   lengths   Nones   r(   s   selfs   lengths   rs   is   newpos(    (    s   /usr/lib/python2.2/StringIO.pys   readline_ s    


	c    s{   d } g  } |  i ƒ  } xX | oP | i | ƒ | t | ƒ 7} d | j  o
 | j n o Pn |  i ƒ  } q W| Sd  S(   Ni    (   s   totals   liness   selfs   readlines   lines   appends   lens   sizehint(   s   selfs   sizehints   totals   liness   line(    (    s   /usr/lib/python2.2/StringIO.pys	   readlinesq s     c    s…   |  i o t d ‚ n | t j o |  i } n> | d j  o t t d ƒ ‚ n | |  i j  o | |  _ n |  i ƒ  |  |  _	 d  S(   Ns   I/O operation on closed filei    s   Negative size not allowed(
   s   selfs   closeds
   ValueErrors   sizes   Nones   poss   IOErrors   EINVALs   getvalues   buf(   s   selfs   size(    (    s   /usr/lib/python2.2/StringIO.pys   truncate} s    
c    sY  |  i o t d ‚ n | o d  Sn t | ƒ t i j o t | ƒ } n |  i |  i	 j o. |  i
 i d |  i |  i	 ƒ |  i |  _	 n |  i t	 | ƒ } |  i |  i	 j  o |  i
 o( |  i d i |  i
 ƒ 7_ g  |  _
 n |  i |  i  | |  i | g |  _
 d |  _ | |  i	 j o | |  _	 n n |  i
 i | ƒ | |  _	 | |  _ d  S(   Ns   I/O operation on closed files    s    (   s   selfs   closeds
   ValueErrors   ss   types   typess   StringTypess   strs   poss   lens   buflists   appends   newposs   bufs   join(   s   selfs   ss   newpos(    (    s   /usr/lib/python2.2/StringIO.pys   writeˆ s*    
 
#		c    s   |  i d i | ƒ ƒ d  S(   Ns    (   s   selfs   writes   joins   list(   s   selfs   list(    (    s   /usr/lib/python2.2/StringIO.pys
   writelines  s    c    s   |  i o t d ‚ n d  S(   Ns   I/O operation on closed file(   s   selfs   closeds
   ValueError(   s   self(    (    s   /usr/lib/python2.2/StringIO.pys   flush£ s    
c    s=   |  i o( |  i d i |  i ƒ 7_ g  |  _ n |  i Sd  S(   Ns    (   s   selfs   buflists   bufs   join(   s   self(    (    s   /usr/lib/python2.2/StringIO.pys   getvalue§ s    
(   s   __name__s
   __module__s   __init__s   __iter__s   closes   isattys   seeks   tells   reads   Nones   readlines	   readliness   truncates   writes
   writeliness   flushs   getvalue(    (    (    s   /usr/lib/python2.2/StringIO.pys   StringIO' s   							c  
   s5  d  k  } | i d o | i d } n d } t | d ƒ i ƒ  } t | d ƒ i ƒ  } t ƒ  }  x | d  D] }	 |  i |	 ƒ ql W|  i | d ƒ |  i ƒ  | j o t d ‚ n |  i ƒ  } d G| GH|  i t | d ƒ ƒ |  i | d ƒ |  i d ƒ d G|  i ƒ  GH|  i ƒ  } |  i ƒ  }	 d	 G|	 GH|  i t |	 ƒ d ƒ |  i t |	 ƒ ƒ } |	 | j o t d
 ‚ n |  i t | ƒ d ƒ |  i ƒ  } | d }	 |  i |  i ƒ  t |	 ƒ ƒ |  i ƒ  } |	 | j o t d ‚ n d Gt | ƒ Gd GHd G|  i ƒ  GH|  i ƒ  | j o t d ‚ n |  i ƒ  d  S(   Ni   s   /etc/passwds   riþÿÿÿs   write faileds   File length =i    s   First line =s   Second line =s   bad result after seek backiÿÿÿÿs#   bad result after seek back from EOFs   Reads
   more liness
   bad length(   s   syss   argvs   files   opens	   readliness   liness   reads   texts   StringIOs   fs   lines   writes
   writeliness   getvalues   RuntimeErrors   tells   lengths   seeks   lens   readlines   heres   line2s   lists   close(
   s   fs   texts   liness   line2s   syss   lists   lengths   heres   files   line(    (    s   /usr/lib/python2.2/StringIO.pys   test° sL    		 	

s   __main__(	   s   __doc__s   typess   errnos   EINVALs   ImportErrors   __all__s   StringIOs   tests   __name__(   s   tests   __all__s   StringIOs   typess   EINVAL(    (    s   /usr/lib/python2.2/StringIO.pys   ? s   		‰	(