�
��c@skdZd
Z
ddklZlZ
dZhZd�Zd�Zd�Z	d�Z
d	�Zd
d�ZdS(
s�
Functions to convert between Python values and C structs.
Python strings are used to hold the data representing the C struct
and also as format strings to describe the layout of data in the C struct.

The optional first format char indicates byte order, size and alignment:
 @: native order, size & alignment (default)
 =: native order, std. size & alignment
 <: little-endian, std. size & alignment
 >: big-endian, std. size & alignment
 !: same as >

The remaining chars indicate types of args and must match exactly;
these can be preceded by a decimal repeat count:
 x: pad byte (no data); c:char; b:signed byte; B:unsigned byte;
 h:short; H:unsigned short; i:int; I:unsigned int;
 l:long; L:unsigned long; f:float; d:double.
Special cases (preceding decimal count indicates length):
 s:string (array of char); p: pascal string (with count byte).
Special case (only available in native format):
 P:an integer type that is wide enough to hold a pointer.
Special case (not in native mode unless 'long long' in platform C):
 q:long long; Q:unsigned long long
Whitespace between formats is ignored.

The variable struct.error is an exception raised on errors.
s0.1i�(tStructterroridc
Cs;tt
�tjo
t
i�
n

t|�}
|
t
|<|
S(
N(tlent_cachet	_MAXCACHEtclearR(tfmtt
s((s/sys/lib/python/struct.pyt_compile#s





c
Cs7yt|}
Wnt
j
o



t|�}
n
X|
iS(
st
    Return size of C struct described by format string fmt.
    See struct.__doc__ for more on format strings.
    (RtKeyErrorRtsize(Rt
o((s/sys/lib/python/struct.pytcalcsize+s




c
Gs=yt|}Wnt
j
o



t|�}n
X|i|
�S(
s�
    Return string containing values v1, v2, ... packed according to fmt.
    See struct.__doc__ for more on format strings.
    (RR	Rtpack(RtargsR((s/sys/lib/python/struct.pyR
6s




cGsCyt|}Wnt
j
o



t|�}n
X|i|
||�S(
s�
    Pack the values v1, v2, ... according to fmt, write
    the packed bytes into the writable buffer buf starting at offset.
    See struct.__doc__ for more on format strings.
    (RR	Rt	pack_into(RtbuftoffsetRR((s/sys/lib/python/struct.pyRAs




cCs=yt|}Wnt
j
o



t|�}n
X|i|
�S(
s�
    Unpack the string, containing packed C structure data, according
    to fmt.  Requires len(string)==calcsize(fmt).
    See struct.__doc__ for more on format strings.
    (RR	Rtunpack(RRR((s/sys/lib/python/struct.pyRMs




icCs@yt|}Wnt
j
o



t|�}n
X|i|
|�S(
s�
    Unpack the buffer, containing packed C structure data, according to
    fmt starting at offset. Requires len(buffer[offset:]) >= calcsize(fmt).
    See struct.__doc__ for more on format strings.
    (RR	Rtunpack_from(RRRR((s/sys/lib/python/struct.pyRYs




N(
t__doc__t__version__t_structRR
RRRRR
RRR(((s/sys/lib/python/struct.pys<module>s