�
��c@sadZddkZddkZddkZddkZddklZdddddd d
ddd
g
Zd�Zd�Z dddd�Zddd�Zdd�Z
e e
�Z
d
dd��YZddd��YZy<ddkZddklZdd�Ze
iee�Wnej
onXd�Zdd�Zd�Zd�Zd�ZdS(sUtilities to support packages.i�N(t
ModuleTypetget_importertiter_importerst
get_loadertfind_loadert
walk_packagestiter_modulestImpImportert ImpLoadert read_codetextend_pathcCsPddk}|id�}|ti�jodSn|id�|i|�S(Ni�i(tmarshaltreadtimpt get_magictNonetload(tstreamRtmagic((s/sys/lib/python/pkgutil.pyR s
cs~h���fd�}y�i|_Wnttfj
onXd��fd���i|_�i|_�|_|S(s/Make a trivial single-dispatch generic functioncs�|d}y
|i}Wntj
ot|�}nXy
|i}Wn\tj
oPy*d|tfd��Y}|id}Wq�tj
otf}q�XnXx=|D](}|�jo�|||�Sq�q�W�||�SdS(NitclscBseZRS((t__name__t
__module__(((s/sys/lib/python/pkgutil.pyR,si(t __class__tAttributeErrorttypet__mro__tobjectt TypeError(targstkwtobRtmrott(tfunctregistry(s/sys/lib/python/pkgutil.pytwrapper"s$
cs/|djo��fd�Sn|��<|S(Ncs
��|�S(((tf(tregisterttyp(s/sys/lib/python/pkgutil.pyt<lambda>=s(R(R&R!(R%R"(R&s/sys/lib/python/pkgutil.pyR%;s
N(RRRRt__dict__t__doc__R%(R!R#((R%R"R!s/sys/lib/python/pkgutil.pyt
simplegenerics tc
cs3hd�}x t||�D]\}}}|||fV|o�yt|�Wn^tj
o"|dj o||�q'q+tj
o%|dj o||�q'�q+Xtti|dd�pg}g}|D]}||�p||q�q�~}x't||d|�D]} | VqWqqWdS(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#||jotSnt||<dS(N(tTrue(tptm((s/sys/lib/python/pkgutil.pytseends
t__path__t.N( Rt
__import__tImportErrorRt ExceptiontgetattrtsystmodulesR(
tpathtprefixtonerrorR/timportertnametispkgt_[1]R-titem((s/sys/lib/python/pkgutil.pyRGs&
2ccs�|djo
t�}ntt|�}h}xW|D]O}xFt||�D]5\}}||jod||<|||fVqLqLWq6WdS(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.
iN(RRtmapRtiter_importer_modules(R8R9t importerstyieldedtiR<R=((s/sys/lib/python/pkgutil.pyR�s
cCs%t|d�pgSn|i|�S(NR(thasattrR(R;R9((s/sys/lib/python/pkgutil.pyRA�scBs2eZdZdd�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(R8(tselfR8((s/sys/lib/python/pkgutil.pyt__init__�scCs�|id�d}||jo|idjodSn|idjo
d}ntii|i�g}yti||�\}}}Wntj
odSnXt||||�S(NR1i�( tsplitR8RtostrealpathR
tfind_moduleR3R(RFtfullnameR8tsubnametfiletfilenametetc((s/sys/lib/python/pkgutil.pyRK�s
R+c
csg|idjptii|i�odSnh}ddk}ti|i�}|i�x|D]�|i|�}|djp
||joqdntii|i|�}t }|ontii|�o[d|joN|}xEti|�D]-}|i|�} | djot
}Pq��dn|o*d|jod||<|||fVqdqdWdS(Ni�RGR1i(R8RRItisdirtinspecttlistdirtsortt
getmodulenametjointFalseR,(
RFR9RCRRt filenamestfntmodnameR8R=RM((s/sys/lib/python/pkgutil.pyR�s2'
(
N(RRR)RRGRKR(((s/sys/lib/python/pkgutil.pyR�s cBs{eZdZdZZd�Zd�Zd�Zd�Z d�Z
d�Zdd�Zdd�Z
d �Zdd
�ZRS(sBPEP 302 Loader that wraps Python's "classic" import algorithm
cCs(||_||_||_||_dS(N(RNRORLRP(RFRLRNRORP((s/sys/lib/python/pkgutil.pyRG�s cCsR|i�z%ti||i|i|i�}Wd|io|ii�nX|S(N(t_reopenR
tload_moduleRNRORPtclose(RFRLtmod((s/sys/lib/python/pkgutil.pyR\�s
%
cCst|d�i�S(Ntrb(topenR(RFtpathname((s/sys/lib/python/pkgutil.pytget_data�scCs�|ioy|iiol|id}|tijot|id�|_q�|titifjot|id�|_q�ndS(NitrUR_( RNtclosedRPR
t PY_SOURCER`ROtPY_COMPILEDtC_EXTENSION(RFtmod_type((s/sys/lib/python/pkgutil.pyR[�s
cCsK|djo
|i}n.||ijotd|i|f��n|S(Ns,Loader for module %s cannot handle module %s(RRLR3(RFRL((s/sys/lib/python/pkgutil.pyt _fix_names
cCs#|i|�}|idtijS(Ni(RiRPR
t
PKG_DIRECTORY(RFRL((s/sys/lib/python/pkgutil.pyt
is_package scCs�|i|�}|idjo�|id}|tijo+|i|�}t||id�|_q�|ti jo5|i
�zt|i�|_Wd|ii
�Xq�|tijo|i�i�|_q�n|iS(Nitexec(RitcodeRRPR
Ret
get_sourcetcompileRORfR[R RNR]Rjt
_get_delegatetget_code(RFRLRhtsource((s/sys/lib/python/pkgutil.pyRq
s
cCs|i|�}|idjo�|id}|tijo5|i�z|ii�|_Wd|ii �Xq�ti
joQtii
|id �o3t|id d�}|i�|_|i �q��tijo|i�i�|_q�|iS(Nii�Rc(RiRrRRPR
ReR[RNRR]RfRIR8texistsROR`RjRpRn(RFRLRhR$((s/sys/lib/python/pkgutil.pyRns
cCst|i�id�S(NRG(RRORK(RF((s/sys/lib/python/pkgutil.pyRp2scCs||i|�}|id}|idtijo|i�i�Sn2|idtititifjo|i SndS(Ni(RiRPR
RjRptget_filenameReRfRgROR(RFRLRh((s/sys/lib/python/pkgutil.pyRt5s
&N(RRR)RRmRrRGR\RbR[RiRkRqRnRpRt(((s/sys/lib/python/pkgutil.pyR�s
(tzipimporterc cseti|ii�}|i�|i}t|�}h}ddk}x|D]}|i|�pqNn||i t
i�}t|�djoJ|did�o6|d|jo!d||d<|dtfVq�nt|�djoqNn|i
|d�}|djoqNn|o7d|jo*||jod||<||tfVqNqNWdS(Ni�iis__init__.pyiRGR1(t zipimportt_zip_directory_cachetarchivetkeysRTR9tlenRRt
startswithRHRItsepR,RURW( R;R9tdirlistt_prefixtplenRCRRRYRZ((s/sys/lib/python/pkgutil.pytiter_zipimport_modulesCs.
'
!
cCs�yti|}Wngtj
o[x>tiD]-}y||�}PWq,tj
oq,Xq,Wd}tii||�nX|djo0yt|�}Wq�tj
o
d}q�Xn|S(s�Retrieve a PEP 302 importer for the given path item
The returned importer is cached in sys.path_importer_cache
if it was newly created by a path hook.
If there is no importer, a wrapper around the basic import
machinery is returned. This wrapper is never inserted into
the importer cache (None is inserted instead).
The cache (or part of it) can be cleared manually if a
rescan of sys.path_hooks is necessary.
N(R6tpath_importer_cachetKeyErrort
path_hooksR3Rt
setdefaultR(t path_itemR;t path_hook((s/sys/lib/python/pkgutil.pyRfs$
ccs�|id�otd��nd|jo^di|id�d �}|tijot|�ntti|dd�pg}n#xti D]}|Vq�Wti
}x|D]}t|�Vq�Wd|jot�VndS(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
R1s#Relative module names not supportedi�R0N(
R{R3RVRHR6R7R2R5Rt meta_pathR8RR(RLtpkgR8R;R?((s/sys/lib/python/pkgutil.pyR�s
$
cCs{|tijoti|}nt|t�o:|}t|dd�}|dj o|Sn|i}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(R6R7t
isinstanceRR5RRR(tmodule_or_nametmoduletloaderRL((s/sys/lib/python/pkgutil.pyR�s
cCs?x8t|�D]*}|i|�}|dj o|Sq
q
WdS(shFind 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/python/pkgutil.pyR�s
c
Cs�t|t�p|Sntii|id��}tii|id��}|tid}dtid}|}x\tiD]Q}t|t�ptii |�oq�ntii||�}tii||�}||jo$tii
|�o|i|�ntii||�} tii
| �o�yt| �}
Wn/t
j
o#}tiid| |f�q�XxI|
D]A}|id�}|p|id�oqn|i|�qW|
i�q�q�W|S(s�Extend a package's path.
Intended use is to place the following code in a package's __init__.py:
from pkgutil import extend_path
__path__ = extend_path(__path__, __name__)
This will add to the package's __path__ all subdirectories of
directories on sys.path named after the package. This is useful
if one wants to distribute different parts of a single logical
package as multiple directories.
It also looks for *.pkg files beginning where * matches the name
argument. This feature is similar to *.pth files (see site.py),
except that it doesn't special-case lines starting with 'import'.
A *.pkg file is trusted at face value: apart from checking for
duplicates, all entries found in a *.pkg file are added to the
path, regardless of whether they are exist the filesystem. (This
is a feature.)
If the input path is not a list (as is the case for frozen
packages) it is returned unchanged. The input path is not
modified; an extended copy is returned. Items are only appended
to the copy at the end.
It is assumed that sys.path is a sequence. Items of sys.path that
are not (unicode or 8-bit) strings referring to existing
directories are ignored. Unicode items of sys.path that cause
errors when used as filenames may cause this function to raise an
exception (in line with os.path.isdir() behavior).
R1R�RGtpysCan't open %s: %s
s
t#(R�tlistRIR8RVRHtextsepR6t
basestringRQtisfiletappendR`tIOErrortstderrtwritetrstripR{R](
R8R<tpnametsnamet sname_pkgtinit_pytdirtsubdirtinitfiletpkgfileR$tmsgtline((s/sys/lib/python/pkgutil.pyR
�s<!
% (((R)RIR6R
tos.pathttypesRt__all__R R*RRRRARRRvRuR�R%R3RRRRR
(((s/sys/lib/python/pkgutil.pys<module>s8
(:>_ ")
|