�`^c@sk
dZd
dl
Z
d
dlZd
dlZd
dlZ
d
dlmZ
dddddd	d
ddd
dgZd�Zd�Z	dddd�Zddd�Zdd�Z
e	e
�Z
ddd��YZdd d��YZy<d
dlZd
dlmZ
dd�Ze
jee�
Wnek
r-



n
Xd�Zdd�Zd�Zd�Zd�Zd�ZdS(!sUtilities to support packages.i�N(
t
ModuleTypetget_importertiter_importerst
get_loadertfind_loadert
walk_packagestiter_modulestget_datatImpImportert	ImpLoadert	read_codetextend_pathc
CsKd
dl}
|j
d�}|tj�kr1dS|j
d�
|
j|�S(Ni�i(tmarshaltreadtimpt	get_magictNonetload(tstreamRtmagic((s/sys/lib/python2.7/pkgutil.pyR
s



c
s|i���fd
�}
y�j|
_Wnt
tfk
rA


n
Xd��fd���j|
_�j|
_�|
_|
S(s/Make a trivial single-dispatch generic functioncs�|d
}y
|j}Wnt
k
r6


t|�}n
Xy
|j}WnXt
k
r�


y*d|tfd��Y}|jd}Wq�tk
r�


tf
}q�Xn
Xx8|D]#}|�kr��|||
�Sq�W�||
�SdS(Nitclsc
BseZ
RS((t__name__t
__module__(((s/sys/lib/python2.7/pkgutil.pyR,s
i
(t	__class__tAttributeErrorttypet__mro__tobjectt	TypeError(targstkwtobRtmrot
t(tfunctregistry(s/sys/lib/python2.7/pkgutil.pytwrapper"s"





















cs*|
dkr��fd
�S|
��<|
S(Nc

s
��|�S(
N((
t
f(tregisterttyp(s/sys/lib/python2.7/pkgutil.pyt<lambda>=s(
R(R'R"(R&R#(
R's/sys/lib/python2.7/pkgutil.pyR&;s




N(RRRRt__dict__t__doc__R&(R"R$((R"R&R#s/sys/lib/python2.7/pkgutil.pyt
simplegenerics





	
tc	cs
id
�}x
t||
�D]�}}}|||fV
|ryt
|�
WnVtk
ry


|dk	r
||�
q
q
tk
r�


|dk	r�||�
q
�q
Xttj|dd�p�g}g|D]}||�s�|^q�}x&t||d|�D]}|V
q

WqqWdS(s�Yields (module_loader, name, ispkg) for all modules recursively
    on path, or, if path is None, all accessible modules.

    'path' should be either None or a list of paths to look for
    modules in.

    'prefix' is a string to output on the front of every module name
    on output.

    Note that this function must import all *packages* (NOT all
    modules!) on the given path, in order to access the __path__
    attribute to find submodules.

    'onerror' is a function which gets called with one argument (the
    name of the package which was being imported) if any exception
    occurs while trying to import a package.  If no onerror function is
    supplied, ImportErrors are caught and ignored, while all other
    exceptions are propagated, terminating the search.

    Examples:

    # list all modules python can access
    walk_packages()

    # list all submodules of ctypes
    walk_packages(ctypes.__path__, ctypes.__name__+'.')
    cSs||
krtSt|
|<dS(
N(
tTrue(t
pt
m((s/sys/lib/python2.7/pkgutil.pytseends


t__path__t
.N(	Rt
__import__tImportErrorRt	ExceptiontgetattrtsystmodulesR(	tpathtprefixtonerrorR0timportertnametispkgR.titem((s/sys/lib/python2.7/pkgutil.pyRGs"











%
ccs�|dkrt
�}ntt|�}i}xU|D]M}xDt||
�D]3\}}||krJd
||<|||fV
qJqJWq4WdS(s&
Yields (module_loader, name, ispkg) for all submodules on path,
    or, if path is None, all top-level modules on sys.path.

    'path' should be either None or a list of paths to look for
    modules in.

    'prefix' is a string to output on the front of every module name
    on output.
    i
N(RRtmapR
titer_importer_modules(R9R:t	importerstyieldedt
iR=R>((s/sys/lib/python2.7/pkgutil.pyR�s







cCs t|d
�sgS|j
|
�S(NR(thasattrR(R<R:((s/sys/lib/python2.7/pkgutil.pyRA�s


cBs2eZ
dZdd
�Zdd�Zdd�ZRS(s�PEP 302 Importer that wraps Python's "classic" import algorithm

    ImpImporter(dirname) produces a PEP 302 importer that searches that
    directory.  ImpImporter(None) produces a PEP 302 importer that searches
    the current sys.path, plus any modules that are frozen or built-in.

    Note that ImpImporter does not currently support being used by placement
    on sys.meta_path.
    cCs
|
|_dS(
N(
R9(tselfR9((s/sys/lib/python2.7/pkgutil.pyt__init__�s
cCs�|
jd
�d}||
kr2|j
dkr2dS|j
dkrJd}ntj
j|j
�g
}ytj||�\}}}Wntk
r�


dSXt|
|||�S(NR2i�(	tsplitR9RtostrealpathRtfind_moduleR4R	(RFtfullnameR9tsubnametfiletfilenametetc((s/sys/lib/python2.7/pkgutil.pyRK�s



	





R,ccs�|jdks%tjj|j�r)dSi}d
dl}ytj|j�}Wntk
rj


g}n
X|j�
x
|D]
}|j|�}|dks|||kr�q|ntjj	|j|�}t
}|ra
tjj|�ra
d|kra
|}ytj|�}	Wntk
r$



g}	n
Xx9|	D]+}|j|�}
|
dkr,
t}Pq,
q,
Wq|n|r|d|kr|d||<|
||fV
q|q|WdS(Ni�RGR2i
(R9RRItisdirtinspecttlistdirtOSErrortsortt
getmodulenametjointFalseR-(RFR:RCRRt	filenamestfntmodnameR9R>tdircontentsRM((s/sys/lib/python2.7/pkgutil.pyR�s<
%













%














N(RRR*RRGRKR(((s/sys/lib/python2.7/pkgutil.pyR�s	cBs{eZ
dZdZZd
�Zd�Zd�Zd�Z	d�Z
d�Zdd�Zdd�Z
d	�Zdd
�ZRS(sBPEP 302 Loader that wraps Python's "classic" import algorithm
    cCs(||_||_
|
|_||_dS(
N(RNRORLRP(RFRLRNRORP((s/sys/lib/python2.7/pkgutil.pyRG�s
	
	
	
cCsP|j�
z%t
j|
|j|j|j�}Wd|jrK|jj�
nX|S(
N(t_reopenRtload_moduleRNRORPtclose(RFRLtmod((s/sys/lib/python2.7/pkgutil.pyR^�s



%	
cCst|
d
�j
�S(Ntrb(topenR
(RFtpathname((s/sys/lib/python2.7/pkgutil.pyR�s
c
Cs�|jr||jj
r||jd
}
|
tjkrIt|jd�|_q||
tjtjfkr|t|jd�|_q|ndS(NitrURa(	RNtclosedRPRt	PY_SOURCERbROtPY_COMPILEDtC_EXTENSION(RFtmod_type((s/sys/lib/python2.7/pkgutil.pyR]

s






cCsG|
dkr|j
}
n+|
|j
krCtd
|j
|
f��n|
S(Ns,Loader for module %s cannot handle module %s(RRLR4(RFRL((s/sys/lib/python2.7/pkgutil.pyt	_fix_name	
s





cCs#|j|
�}
|j
d
tjkS(Ni(RjRPRt
PKG_DIRECTORY(RFRL((s/sys/lib/python2.7/pkgutil.pyt
is_package
s

cCs�|j|
�}
|j
dkr�|jd
}|tjkrd|j|
�}t||jd�|_
q�|tj	kr�|j
�
zt|j�|_
Wd|jj
�
Xq�|tjkr�|j�j�|_
q�n|j
S(Nitexec(RjtcodeRRPRRft
get_sourcetcompileRORgR]R
RNR_Rkt
_get_delegatetget_code(RFRLRitsource((s/sys/lib/python2.7/pkgutil.pyRr
s














cCs�|j|
�}
|j
dkr�jd
}|tjkrn|j�
z|jj�|_
Wd|jj	�
Xq�tj
kr�tjj
|jd �r�|jd d�}|j�|_
|j	�
q�|tjkr�j�j�|_
q�|j
S(Nii�Rd(RjRsRRPRRfR]RNR
R_RgRIR9texistsRORbRkRqRo(RFRLRiR%((s/sys/lib/python2.7/pkgutil.pyRo&
s 
















c

Cst|j
�jd
�S(NRG(RRORK(
RF((s/sys/lib/python2.7/pkgutil.pyRq:
s
cCsr|j|
�}
|j
d
}|j
d
tjkrB|j�j�S|j
d
tjtjtjfkrn|j	SdS(Ni(RjRPRRkRqtget_filenameRfRgRhROR(RFRLRi((s/sys/lib/python2.7/pkgutil.pyRu=
s





%

N(RRR*RRnRsRGR^RR]RjRlRrRoRqRu(((s/sys/lib/python2.7/pkgutil.pyR	�s

							(
tzipimporterc	csV
tj
|jj�}|j�
|j}t|�}i}d
dl}x
|D]
}|j|�siqNn||j	t
j�}t|�dkr�|djd�r�|d|kr�d||d<|dtfV
q�nt|�dkr�Nn|j
|d�}|dkr
qNn|rNd|krN||krNd||<|
|tfV
qNqNWdS(Ni�ii
s__init__.pyiRGR2(t	zipimportt_zip_directory_cachetarchivetkeysRUR:tlenRRt
startswithRHRItsepR-RVRX(	R<R:tdirlistt_prefixtplenRCRRRZR[((s/sys/lib/python2.7/pkgutil.pytiter_zipimport_modulesK
s,



	






%








c
Cs�ytj
|}
Wnctk
rv


x<tjD]+}y||�}
PWq+tk
rU


q+Xq+Wd
}
tj
j||
�
n
X|
d
kr�yt|�}
Wq�tk
r�


d
}
q�Xn|
S(s�Retrieve a PEP 302 importer for the given path item

    The returned importer is cached in sys.path_importer_cache
    if it was newly created by a path hook.

    If there is no importer, a wrapper around the basic import
    machinery is returned. This wrapper is never inserted into
    the importer cache (None is inserted instead).

    The cache (or part of it) can be cleared manually if a
    rescan of sys.path_hooks is necessary.
    N(R7tpath_importer_cachetKeyErrort
path_hooksR4Rt
setdefaultR(t	path_itemR<t	path_hook((s/sys/lib/python2.7/pkgutil.pyR
n
s"


















c
cs�|jd
�rt
d��nd
|kr�d
j|jd
�d �}
|
tjkrbt|
�
nttj|
dd�p~g}n"xtj	D]}|V
q�Wtj
}x|D]}t|�V
q�Wd
|kr�t�V
ndS(s�Yield PEP 302 importers for the given module name

    If fullname contains a '.', the importers will be for the package
    containing fullname, otherwise they will be importers for sys.meta_path,
    sys.path, and Python's "classic" import machinery, in that order.  If
    the named module is in a package, that package is imported as a side
    effect of invoking this function.

    Non PEP 302 mechanisms (e.g. the Windows registry) used by the
    standard import machinery to find files in alternative locations
    are partially supported, but are searched AFTER sys.path. Normally,
    these locations are searched BEFORE sys.path, preventing sys.path
    entries from shadowing them.

    For this to cause a visible difference in behaviour, there must
    be a module or package name that is accessible via both sys.path
    and one of the non PEP 302 file system mechanisms. In this case,
    the emulation will find the former version, while the builtin
    import mechanism will find the latter.

    Items of the following types can be affected by this discrepancy:
        imp.C_EXTENSION, imp.PY_SOURCE, imp.PY_COMPILED, imp.PKG_DIRECTORY
    R2s#Relative module names not supportedi�R1N(
R|R4RWRHR7R8R3R6Rt	meta_pathR9R
R(RLtpkgR9R<R?((s/sys/lib/python2.7/pkgutil.pyR�s





"
	
	




c
Csr|tj
krtj
|}nt|t�rb|}
t|
d
d�}|dk	rV|S|
j}n|}t|�S(sDGet a PEP 302 "loader" object for module_or_name

    If the module or package is accessible via the normal import
    mechanism, a wrapper around the relevant part of that machinery
    is returned.  Returns None if the module cannot be found or imported.
    If the named module is not already imported, its containing package
    (if any) is imported, in order to establish the package __path__.

    This function uses iter_importers(), and is thus subject to the same
    limitations regarding platform-specific special import locations such
    as the Windows registry.
    t
__loader__N(R7R8t
isinstanceRR6RRR(tmodule_or_nametmoduletloaderRL((s/sys/lib/python2.7/pkgutil.pyR�s








c
Cs:x3t|�D]%}
|
j
|�}|d
k	r
|Sq
Wd
S(sh
Find a PEP 302 "loader" object for fullname

    If fullname contains dots, path must be the containing package's __path__.
    Returns None if the module cannot be found or imported. This function uses
    iter_importers(), and is thus subject to the same limitations regarding
    platform-specific special import locations such as the Windows registry.
    N(RRKR(RLR<R�((s/sys/lib/python2.7/pkgutil.pyR�s



c
Cs�t|t
�s|Stjj|
jd
��}tjj|
jd
��}|tjd}dtjd}|}xO
tjD]D
}t|t�s|tjj	|�r�q|ntjj||�}tjj||�}||kr
tjj
|�r
|j|�
ntjj||�}	tjj
|	�r|yt|	�}
Wn-t
k
ri

}
tjjd|	|f�
q�XxF|
D]>}|jd�}|sq
|jd�r�qq
n|j|�
qq
W|
j�
q|q|W|S(s�Extend a package's path.

    Intended use is to place the following code in a package's __init__.py:

        from pkgutil import extend_path
        __path__ = extend_path(__path__, __name__)

    This will add to the package's __path__ all subdirectories of
    directories on sys.path named after the package.  This is useful
    if one wants to distribute different parts of a single logical
    package as multiple directories.

    It also looks for *.pkg files beginning where * matches the name
    argument.  This feature is similar to *.pth files (see site.py),
    except that it doesn't special-case lines starting with 'import'.
    A *.pkg file is trusted at face value: apart from checking for
    duplicates, all entries found in a *.pkg file are added to the
    path, regardless of whether they are exist the filesystem.  (This
    is a feature.)

    If the input path is not a list (as is the case for frozen
    packages) it is returned unchanged.  The input path is not
    modified; an extended copy is returned.  Items are only appended
    to the copy at the end.

    It is assumed that sys.path is a sequence.  Items of sys.path that
    are not (unicode or 8-bit) strings referring to existing
    directories are ignored.  Unicode items of sys.path that cause
    errors when used as filenames may cause this function to raise an
    exception (in line with os.path.isdir() behavior).
    R2R�RGtpysCan't open %s: %s
s

t
#(R�tlistRIR9RWRHtextsepR7t
basestringRQtisfiletappendRbtIOErrortstderrtwritetrstripR|R_(
R9R=tpnametsnamet	sname_pkgtinit_pytdirtsubdirtinitfiletpkgfileR%tmsgtline((s/sys/lib/python2.7/pkgutil.pyR�s8!


#















cCs�t|�}|dks(t|d
�r,dStjj|�pJ|j|�}|dksit|d�rmdS|
jd�}|jdt	j
j|j��
t	j
j
|�}|j|�S(sfGet a resource from a package.

    This is a wrapper round the PEP 302 loader get_data API. The package
    argument should be the name of a package, in standard module format
    (foo.bar). The resource argument should be in the form of a relative
    filename, using '/' as the path separator. The parent directory name '..'
    is not allowed, and nor is a rooted name (starting with a '/').

    The function returns a binary string, which is the contents of the
    specified resource.

    For packages located in the filesystem, which have already been imported,
    this is the rough equivalent of

        d = os.path.dirname(sys.modules[package].__file__)
        data = open(os.path.join(d, resource), 'rb').read()

    If the package cannot be located or loaded, or it uses a PEP 302 loader
    which does not support get_data(), then None is returned.
    Rt__file__t
/iN(RRRER7R8tgetR^RHtinsertRIR9tdirnameR�RWR(tpackagetresourceR�R`tpartst
resource_name((s/sys/lib/python2.7/pkgutil.pyR,s


!




(((R*RIR7Rtos.pathttypesRt__all__R
R+RRRRARR	RwRvR�R&R4R
RRRRR(((s/sys/lib/python2.7/pkgutil.pyt<module>
s:




	
	
	(:F_



	")			J