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Current Directory: /usr/lib64/python2.7
Viewing File: /usr/lib64/python2.7/StringIO.pyc
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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 ('\n') 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).
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dd�Zd�Zd�Zd�Zd�ZRS(s�class StringIO([buffer])

    When a StringIO object is created, it can be initialized to an existing
    string by passing the string to the constructor. If no string is given,
    the StringIO will start empty.

    The StringIO object can accept either Unicode or 8-bit strings, but
    mixing the two may take some care. If both are used, 8-bit strings that
    cannot be interpreted as 7-bit ASCII (that use the 8th bit) will cause
    a UnicodeError to be raised when getvalue() is called.
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        (unless f is closed). When a file is used as an iterator, typically
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        method is called repeatedly. This method returns the next input line,
        or raises StopIteration when EOF is hit.
        (RRtreadlinet
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	cCs%|js!t|_|`|`ndS(s Free the memory buffer.
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icCs�t|j�|jr=|jdj|j�7_g|_n|dkrY||j7}n|dkru||j7}ntd|�|_dS(sSet the file's current position.

        The mode argument is optional and defaults to 0 (absolute file
        positioning); other values are 1 (seek relative to the current
        position) and 2 (seek relative to the file's end).

        There is no return value.
        RiiiN(RRRR	tjoinRR
tmax(RRtmode((s /usr/lib64/python2.7/StringIO.pytseek_s	
	cCst|j�|jS(s#Return the file's current position.(RRR(R((s /usr/lib64/python2.7/StringIO.pyttellrs
i����cCs�t|j�|jr=|jdj|j�7_g|_n|dksU|dkra|j}nt|j||j�}|j|j|!}||_|S(sERead at most size bytes from the file
        (less if the read hits EOF before obtaining size bytes).

        If the size argument is negative or omitted, read all data until EOF
        is reached. The bytes are returned as a string object. An empty
        string is returned when EOF is encountered immediately.
        RiN(	RRRR	RtNoneR
tminR(RtntnewposR((s /usr/lib64/python2.7/StringIO.pytreadws
		cCs�t|j�|jr=|jdj|j�7_g|_n|jjd|j�}|dkrm|j}n
|d}|dk	r�|dkr�|j||kr�|j|}q�n|j|j|!}||_|S(s%Read one entire line from the file.

        A trailing newline character is kept in the string (but may be absent
        when a file ends with an incomplete line). If the size argument is
        present and non-negative, it is a maximum byte count (including the
        trailing newline) and an incomplete line may be returned.

        An empty string is returned only when EOF is encountered immediately.

        Note: Unlike stdio's fgets(), the returned string contains null
        characters ('\0') if they occurred in the input.
        Rs
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	cCsrd}g}|j�}xS|rm|j|�|t|�7}d|koU|knr^Pn|j�}qW|S(s'Read until EOF using readline() and return a list containing the
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        If the optional sizehint argument is present, instead of reading up
        to EOF, whole lines totalling approximately sizehint bytes (or more
        to accommodate a final whole line).
        i(RtappendR
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cCs~t|j�|dkr%|j}n9|dkrCttd��n||jkr^||_n|j�| |_||_dS(s�Truncate the file's size.

        If the optional size argument is present, the file is truncated to
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|j�7_	n|j	| ||j	|g|_d|_	||krH|}qHn|jj|�|}||_||_dS(sGWrite a string to the file.

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cCst|j�dS(s"Flush the internal buffer
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        Retrieve the entire contents of the "file" at any time before
        the StringIO object's close() method is called.

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        strings that cannot be interpreted as 7-bit ASCII (that use the
        8th bit) will cause a UnicodeError to be raised when getvalue()
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