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"""
The Windows implementation of some posix modules,
based on the Win32 API.
"""
from __future__ import with_statement
from rpython.rtyper.lltypesystem import lltype, rffi
from rpython.translator.tool.cbuild import ExternalCompilationInfo
from rpython.rtyper.tool import rffi_platform as platform
from rpython.tool.sourcetools import func_renamer
from rpython.rlib.objectmodel import specialize
def make_win32_traits(traits):
from rpython.rlib import rwin32
if traits.str is unicode:
suffix = 'W'
else:
suffix = 'A'
class CConfig:
_compilation_info_ = ExternalCompilationInfo(
includes = ['windows.h', 'winbase.h', 'sys/stat.h'],
)
WIN32_FIND_DATA = platform.Struct(
'struct _WIN32_FIND_DATA' + suffix,
# Only interesting fields
[('dwFileAttributes', rwin32.DWORD),
('nFileSizeHigh', rwin32.DWORD),
('nFileSizeLow', rwin32.DWORD),
('ftCreationTime', rwin32.FILETIME),
('ftLastAccessTime', rwin32.FILETIME),
('ftLastWriteTime', rwin32.FILETIME),
('cFileName', lltype.FixedSizeArray(traits.CHAR, 250))])
ERROR_FILE_NOT_FOUND = platform.ConstantInteger(
'ERROR_FILE_NOT_FOUND')
ERROR_NO_MORE_FILES = platform.ConstantInteger(
'ERROR_NO_MORE_FILES')
GetFileExInfoStandard = platform.ConstantInteger(
'GetFileExInfoStandard')
FILE_ATTRIBUTE_DIRECTORY = platform.ConstantInteger(
'FILE_ATTRIBUTE_DIRECTORY')
FILE_ATTRIBUTE_READONLY = platform.ConstantInteger(
'FILE_ATTRIBUTE_READONLY')
INVALID_FILE_ATTRIBUTES = platform.ConstantInteger(
'INVALID_FILE_ATTRIBUTES')
ERROR_SHARING_VIOLATION = platform.ConstantInteger(
'ERROR_SHARING_VIOLATION')
_S_IFDIR = platform.ConstantInteger('_S_IFDIR')
_S_IFREG = platform.ConstantInteger('_S_IFREG')
_S_IFCHR = platform.ConstantInteger('_S_IFCHR')
_S_IFIFO = platform.ConstantInteger('_S_IFIFO')
FILE_TYPE_UNKNOWN = platform.ConstantInteger('FILE_TYPE_UNKNOWN')
FILE_TYPE_CHAR = platform.ConstantInteger('FILE_TYPE_CHAR')
FILE_TYPE_PIPE = platform.ConstantInteger('FILE_TYPE_PIPE')
WIN32_FILE_ATTRIBUTE_DATA = platform.Struct(
'WIN32_FILE_ATTRIBUTE_DATA',
[('dwFileAttributes', rwin32.DWORD),
('nFileSizeHigh', rwin32.DWORD),
('nFileSizeLow', rwin32.DWORD),
('ftCreationTime', rwin32.FILETIME),
('ftLastAccessTime', rwin32.FILETIME),
('ftLastWriteTime', rwin32.FILETIME)])
BY_HANDLE_FILE_INFORMATION = platform.Struct(
'BY_HANDLE_FILE_INFORMATION',
[('dwFileAttributes', rwin32.DWORD),
('nFileSizeHigh', rwin32.DWORD),
('nFileSizeLow', rwin32.DWORD),
('nNumberOfLinks', rwin32.DWORD),
('nFileIndexHigh', rwin32.DWORD),
('nFileIndexLow', rwin32.DWORD),
('ftCreationTime', rwin32.FILETIME),
('ftLastAccessTime', rwin32.FILETIME),
('ftLastWriteTime', rwin32.FILETIME)])
config = platform.configure(CConfig)
def external(*args, **kwargs):
kwargs['compilation_info'] = CConfig._compilation_info_
llfunc = rffi.llexternal(calling_conv='win', *args, **kwargs)
return staticmethod(llfunc)
class Win32Traits:
apisuffix = suffix
for name in '''WIN32_FIND_DATA WIN32_FILE_ATTRIBUTE_DATA BY_HANDLE_FILE_INFORMATION
GetFileExInfoStandard
FILE_ATTRIBUTE_DIRECTORY FILE_ATTRIBUTE_READONLY
INVALID_FILE_ATTRIBUTES
_S_IFDIR _S_IFREG _S_IFCHR _S_IFIFO
FILE_TYPE_UNKNOWN FILE_TYPE_CHAR FILE_TYPE_PIPE
ERROR_FILE_NOT_FOUND ERROR_NO_MORE_FILES
ERROR_SHARING_VIOLATION
'''.split():
locals()[name] = config[name]
LPWIN32_FIND_DATA = lltype.Ptr(WIN32_FIND_DATA)
GET_FILEEX_INFO_LEVELS = rffi.ULONG # an enumeration
FindFirstFile = external('FindFirstFile' + suffix,
[traits.CCHARP, LPWIN32_FIND_DATA],
rwin32.HANDLE)
FindNextFile = external('FindNextFile' + suffix,
[rwin32.HANDLE, LPWIN32_FIND_DATA],
rwin32.BOOL)
FindClose = external('FindClose',
[rwin32.HANDLE],
rwin32.BOOL)
GetFileAttributes = external(
'GetFileAttributes' + suffix,
[traits.CCHARP],
rwin32.DWORD)
SetFileAttributes = external(
'SetFileAttributes' + suffix,
[traits.CCHARP, rwin32.DWORD],
rwin32.BOOL)
GetFileAttributesEx = external(
'GetFileAttributesEx' + suffix,
[traits.CCHARP, GET_FILEEX_INFO_LEVELS,
lltype.Ptr(WIN32_FILE_ATTRIBUTE_DATA)],
rwin32.BOOL)
GetFileInformationByHandle = external(
'GetFileInformationByHandle',
[rwin32.HANDLE, lltype.Ptr(BY_HANDLE_FILE_INFORMATION)],
rwin32.BOOL)
GetFileType = external(
'GetFileType',
[rwin32.HANDLE],
rwin32.DWORD)
LPSTRP = rffi.CArrayPtr(traits.CCHARP)
GetFullPathName = external(
'GetFullPathName' + suffix,
[traits.CCHARP, rwin32.DWORD,
traits.CCHARP, LPSTRP],
rwin32.DWORD)
GetCurrentDirectory = external(
'GetCurrentDirectory' + suffix,
[rwin32.DWORD, traits.CCHARP],
rwin32.DWORD)
SetCurrentDirectory = external(
'SetCurrentDirectory' + suffix,
[traits.CCHARP],
rwin32.BOOL)
CreateDirectory = external(
'CreateDirectory' + suffix,
[traits.CCHARP, rffi.VOIDP],
rwin32.BOOL)
SetEnvironmentVariable = external(
'SetEnvironmentVariable' + suffix,
[traits.CCHARP, traits.CCHARP],
rwin32.BOOL)
DeleteFile = external(
'DeleteFile' + suffix,
[traits.CCHARP],
rwin32.BOOL)
MoveFile = external(
'MoveFile' + suffix,
[traits.CCHARP, traits.CCHARP],
rwin32.BOOL)
return Win32Traits
#_______________________________________________________________
# listdir
def make_listdir_impl(traits):
from rpython.rlib import rwin32
win32traits = make_win32_traits(traits)
if traits.str is unicode:
def make_listdir_mask(path):
if path and path[-1] not in (u'/', u'\\', u':'):
path += u'/'
return path + u'*.*'
def skip_listdir(name):
return name == u"." or name == u".."
else:
def make_listdir_mask(path):
if path and path[-1] not in ('/', '\\', ':'):
path += '/'
return path + '*.*'
def skip_listdir(name):
return name == "." or name == ".."
@func_renamer('listdir_llimpl_%s' % traits.str.__name__)
def listdir_llimpl(path):
mask = make_listdir_mask(path)
filedata = lltype.malloc(win32traits.WIN32_FIND_DATA, flavor='raw')
try:
result = []
hFindFile = win32traits.FindFirstFile(mask, filedata)
if hFindFile == rwin32.INVALID_HANDLE_VALUE:
error = rwin32.GetLastError()
if error == win32traits.ERROR_FILE_NOT_FOUND:
return result
else:
raise WindowsError(error, "FindFirstFile failed")
while True:
name = traits.charp2str(rffi.cast(traits.CCHARP,
filedata.c_cFileName))
if not skip_listdir(name):
result.append(name)
if not win32traits.FindNextFile(hFindFile, filedata):
break
# FindNextFile sets error to ERROR_NO_MORE_FILES if
# it got to the end of the directory
error = rwin32.GetLastError()
win32traits.FindClose(hFindFile)
if error == win32traits.ERROR_NO_MORE_FILES:
return result
else:
raise WindowsError(error, "FindNextFile failed")
finally:
lltype.free(filedata, flavor='raw')
return listdir_llimpl
#_______________________________________________________________
# chdir
def make_chdir_impl(traits):
from rpython.rlib import rwin32
win32traits = make_win32_traits(traits)
if traits.str is unicode:
def isUNC(path):
return path[0] == u'\\' or path[0] == u'/'
def magic_envvar(path):
return u'=' + path[0] + u':'
else:
def isUNC(path):
return path[0] == '\\' or path[0] == '/'
def magic_envvar(path):
return '=' + path[0] + ':'
@func_renamer('chdir_llimpl_%s' % traits.str.__name__)
def chdir_llimpl(path):
"""This is a reimplementation of the C library's chdir function,
but one that produces Win32 errors instead of DOS error codes.
chdir is essentially a wrapper around SetCurrentDirectory; however,
it also needs to set "magic" environment variables indicating
the per-drive current directory, which are of the form =<drive>:
"""
if not win32traits.SetCurrentDirectory(path):
raise rwin32.lastWindowsError()
MAX_PATH = rwin32.MAX_PATH
assert MAX_PATH > 0
with traits.scoped_alloc_buffer(MAX_PATH) as path:
res = win32traits.GetCurrentDirectory(MAX_PATH + 1, path.raw)
if not res:
raise rwin32.lastWindowsError()
res = rffi.cast(lltype.Signed, res)
assert res > 0
if res <= MAX_PATH + 1:
new_path = path.str(res)
else:
with traits.scoped_alloc_buffer(res) as path:
res = win32traits.GetCurrentDirectory(res, path.raw)
if not res:
raise rwin32.lastWindowsError()
res = rffi.cast(lltype.Signed, res)
assert res > 0
new_path = path.str(res)
if isUNC(new_path):
return
if not win32traits.SetEnvironmentVariable(magic_envvar(new_path), new_path):
raise rwin32.lastWindowsError()
return chdir_llimpl
#_______________________________________________________________
# chmod
def make_chmod_impl(traits):
from rpython.rlib import rwin32
win32traits = make_win32_traits(traits)
@func_renamer('chmod_llimpl_%s' % traits.str.__name__)
def chmod_llimpl(path, mode):
attr = win32traits.GetFileAttributes(path)
if attr == win32traits.INVALID_FILE_ATTRIBUTES:
raise rwin32.lastWindowsError()
if mode & 0200: # _S_IWRITE
attr &= ~win32traits.FILE_ATTRIBUTE_READONLY
else:
attr |= win32traits.FILE_ATTRIBUTE_READONLY
if not win32traits.SetFileAttributes(path, attr):
raise rwin32.lastWindowsError()
return chmod_llimpl
#_______________________________________________________________
# getfullpathname
def make_getfullpathname_impl(traits):
from rpython.rlib import rwin32
win32traits = make_win32_traits(traits)
@func_renamer('getfullpathname_llimpl_%s' % traits.str.__name__)
def getfullpathname_llimpl(path):
nBufferLength = rwin32.MAX_PATH + 1
lpBuffer = lltype.malloc(traits.CCHARP.TO, nBufferLength, flavor='raw')
try:
res = win32traits.GetFullPathName(
path, rffi.cast(rwin32.DWORD, nBufferLength),
lpBuffer, lltype.nullptr(win32traits.LPSTRP.TO))
if res == 0:
raise rwin32.lastWindowsError("_getfullpathname failed")
result = traits.charp2str(lpBuffer)
return result
finally:
lltype.free(lpBuffer, flavor='raw')
return getfullpathname_llimpl
def make_utime_impl(traits):
from rpython.rlib import rwin32
win32traits = make_win32_traits(traits)
from rpython.rtyper.module.ll_os_stat import time_t_to_FILE_TIME
class CConfig:
_compilation_info_ = ExternalCompilationInfo(
includes = ['windows.h'],
)
FILE_WRITE_ATTRIBUTES = platform.ConstantInteger(
'FILE_WRITE_ATTRIBUTES')
OPEN_EXISTING = platform.ConstantInteger(
'OPEN_EXISTING')
FILE_FLAG_BACKUP_SEMANTICS = platform.ConstantInteger(
'FILE_FLAG_BACKUP_SEMANTICS')
globals().update(platform.configure(CConfig))
CreateFile = rffi.llexternal(
'CreateFile' + win32traits.apisuffix,
[traits.CCHARP, rwin32.DWORD, rwin32.DWORD,
rwin32.LPSECURITY_ATTRIBUTES, rwin32.DWORD, rwin32.DWORD,
rwin32.HANDLE],
rwin32.HANDLE,
calling_conv='win')
GetSystemTime = rffi.llexternal(
'GetSystemTime',
[lltype.Ptr(rwin32.SYSTEMTIME)],
lltype.Void,
calling_conv='win')
SystemTimeToFileTime = rffi.llexternal(
'SystemTimeToFileTime',
[lltype.Ptr(rwin32.SYSTEMTIME),
lltype.Ptr(rwin32.FILETIME)],
rwin32.BOOL,
calling_conv='win')
SetFileTime = rffi.llexternal(
'SetFileTime',
[rwin32.HANDLE,
lltype.Ptr(rwin32.FILETIME),
lltype.Ptr(rwin32.FILETIME),
lltype.Ptr(rwin32.FILETIME)],
rwin32.BOOL,
calling_conv = 'win')
@specialize.argtype(1)
def os_utime_llimpl(path, tp):
hFile = CreateFile(path,
FILE_WRITE_ATTRIBUTES, 0,
None, OPEN_EXISTING,
FILE_FLAG_BACKUP_SEMANTICS,
rwin32.NULL_HANDLE)
if hFile == rwin32.INVALID_HANDLE_VALUE:
raise rwin32.lastWindowsError()
ctime = lltype.nullptr(rwin32.FILETIME)
atime = lltype.malloc(rwin32.FILETIME, flavor='raw')
mtime = lltype.malloc(rwin32.FILETIME, flavor='raw')
try:
if tp is None:
now = lltype.malloc(rwin32.SYSTEMTIME, flavor='raw')
try:
GetSystemTime(now)
if (not SystemTimeToFileTime(now, atime) or
not SystemTimeToFileTime(now, mtime)):
raise rwin32.lastWindowsError()
finally:
lltype.free(now, flavor='raw')
else:
actime, modtime = tp
time_t_to_FILE_TIME(actime, atime)
time_t_to_FILE_TIME(modtime, mtime)
if not SetFileTime(hFile, ctime, atime, mtime):
raise rwin32.lastWindowsError()
finally:
rwin32.CloseHandle(hFile)
lltype.free(atime, flavor='raw')
lltype.free(mtime, flavor='raw')
return os_utime_llimpl
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