# util_win32.py - utility functions that use win32 API
#
# Copyright 2005 Matt Mackall <mpm@selenic.com>
# Copyright 2006 Vadim Gelfer <vadim.gelfer@gmail.com>
#
# This software may be used and distributed according to the terms of
# the GNU General Public License, incorporated herein by reference.
# Mark Hammond's win32all package allows better functionality on
# Windows. this module overrides definitions in util.py. if not
# available, import of this module will fail, and generic code will be
# used.
import win32api
from demandload import *
from i18n import gettext as _
demandload(globals(), 'errno os pywintypes win32con win32file win32process')
demandload(globals(), 'cStringIO winerror')
class WinError:
winerror_map = {
winerror.ERROR_ACCESS_DENIED: errno.EACCES,
winerror.ERROR_ACCOUNT_DISABLED: errno.EACCES,
winerror.ERROR_ACCOUNT_RESTRICTION: errno.EACCES,
winerror.ERROR_ALREADY_ASSIGNED: errno.EBUSY,
winerror.ERROR_ALREADY_EXISTS: errno.EEXIST,
winerror.ERROR_ARITHMETIC_OVERFLOW: errno.ERANGE,
winerror.ERROR_BAD_COMMAND: errno.EIO,
winerror.ERROR_BAD_DEVICE: errno.ENODEV,
winerror.ERROR_BAD_DRIVER_LEVEL: errno.ENXIO,
winerror.ERROR_BAD_EXE_FORMAT: errno.ENOEXEC,
winerror.ERROR_BAD_FORMAT: errno.ENOEXEC,
winerror.ERROR_BAD_LENGTH: errno.EINVAL,
winerror.ERROR_BAD_PATHNAME: errno.ENOENT,
winerror.ERROR_BAD_PIPE: errno.EPIPE,
winerror.ERROR_BAD_UNIT: errno.ENODEV,
winerror.ERROR_BAD_USERNAME: errno.EINVAL,
winerror.ERROR_BROKEN_PIPE: errno.EPIPE,
winerror.ERROR_BUFFER_OVERFLOW: errno.ENAMETOOLONG,
winerror.ERROR_BUSY: errno.EBUSY,
winerror.ERROR_BUSY_DRIVE: errno.EBUSY,
winerror.ERROR_CALL_NOT_IMPLEMENTED: errno.ENOSYS,
winerror.ERROR_CANNOT_MAKE: errno.EACCES,
winerror.ERROR_CANTOPEN: errno.EIO,
winerror.ERROR_CANTREAD: errno.EIO,
winerror.ERROR_CANTWRITE: errno.EIO,
winerror.ERROR_CRC: errno.EIO,
winerror.ERROR_CURRENT_DIRECTORY: errno.EACCES,
winerror.ERROR_DEVICE_IN_USE: errno.EBUSY,
winerror.ERROR_DEV_NOT_EXIST: errno.ENODEV,
winerror.ERROR_DIRECTORY: errno.EINVAL,
winerror.ERROR_DIR_NOT_EMPTY: errno.ENOTEMPTY,
winerror.ERROR_DISK_CHANGE: errno.EIO,
winerror.ERROR_DISK_FULL: errno.ENOSPC,
winerror.ERROR_DRIVE_LOCKED: errno.EBUSY,
winerror.ERROR_ENVVAR_NOT_FOUND: errno.EINVAL,
winerror.ERROR_EXE_MARKED_INVALID: errno.ENOEXEC,
winerror.ERROR_FILENAME_EXCED_RANGE: errno.ENAMETOOLONG,
winerror.ERROR_FILE_EXISTS: errno.EEXIST,
winerror.ERROR_FILE_INVALID: errno.ENODEV,
winerror.ERROR_FILE_NOT_FOUND: errno.ENOENT,
winerror.ERROR_GEN_FAILURE: errno.EIO,
winerror.ERROR_HANDLE_DISK_FULL: errno.ENOSPC,
winerror.ERROR_INSUFFICIENT_BUFFER: errno.ENOMEM,
winerror.ERROR_INVALID_ACCESS: errno.EACCES,
winerror.ERROR_INVALID_ADDRESS: errno.EFAULT,
winerror.ERROR_INVALID_BLOCK: errno.EFAULT,
winerror.ERROR_INVALID_DATA: errno.EINVAL,
winerror.ERROR_INVALID_DRIVE: errno.ENODEV,
winerror.ERROR_INVALID_EXE_SIGNATURE: errno.ENOEXEC,
winerror.ERROR_INVALID_FLAGS: errno.EINVAL,
winerror.ERROR_INVALID_FUNCTION: errno.ENOSYS,
winerror.ERROR_INVALID_HANDLE: errno.EBADF,
winerror.ERROR_INVALID_LOGON_HOURS: errno.EACCES,
winerror.ERROR_INVALID_NAME: errno.EINVAL,
winerror.ERROR_INVALID_OWNER: errno.EINVAL,
winerror.ERROR_INVALID_PARAMETER: errno.EINVAL,
winerror.ERROR_INVALID_PASSWORD: errno.EPERM,
winerror.ERROR_INVALID_PRIMARY_GROUP: errno.EINVAL,
winerror.ERROR_INVALID_SIGNAL_NUMBER: errno.EINVAL,
winerror.ERROR_INVALID_TARGET_HANDLE: errno.EIO,
winerror.ERROR_INVALID_WORKSTATION: errno.EACCES,
winerror.ERROR_IO_DEVICE: errno.EIO,
winerror.ERROR_IO_INCOMPLETE: errno.EINTR,
winerror.ERROR_LOCKED: errno.EBUSY,
winerror.ERROR_LOCK_VIOLATION: errno.EACCES,
winerror.ERROR_LOGON_FAILURE: errno.EACCES,
winerror.ERROR_MAPPED_ALIGNMENT: errno.EINVAL,
winerror.ERROR_META_EXPANSION_TOO_LONG: errno.E2BIG,
winerror.ERROR_MORE_DATA: errno.EPIPE,
winerror.ERROR_NEGATIVE_SEEK: errno.ESPIPE,
winerror.ERROR_NOACCESS: errno.EFAULT,
winerror.ERROR_NONE_MAPPED: errno.EINVAL,
winerror.ERROR_NOT_ENOUGH_MEMORY: errno.ENOMEM,
winerror.ERROR_NOT_READY: errno.EAGAIN,
winerror.ERROR_NOT_SAME_DEVICE: errno.EXDEV,
winerror.ERROR_NO_DATA: errno.EPIPE,
winerror.ERROR_NO_MORE_SEARCH_HANDLES: errno.EIO,
winerror.ERROR_NO_PROC_SLOTS: errno.EAGAIN,
winerror.ERROR_NO_SUCH_PRIVILEGE: errno.EACCES,
winerror.ERROR_OPEN_FAILED: errno.EIO,
winerror.ERROR_OPEN_FILES: errno.EBUSY,
winerror.ERROR_OPERATION_ABORTED: errno.EINTR,
winerror.ERROR_OUTOFMEMORY: errno.ENOMEM,
winerror.ERROR_PASSWORD_EXPIRED: errno.EACCES,
winerror.ERROR_PATH_BUSY: errno.EBUSY,
winerror.ERROR_PATH_NOT_FOUND: errno.ENOENT,
winerror.ERROR_PIPE_BUSY: errno.EBUSY,
winerror.ERROR_PIPE_CONNECTED: errno.EPIPE,
winerror.ERROR_PIPE_LISTENING: errno.EPIPE,
winerror.ERROR_PIPE_NOT_CONNECTED: errno.EPIPE,
winerror.ERROR_PRIVILEGE_NOT_HELD: errno.EACCES,
winerror.ERROR_READ_FAULT: errno.EIO,
winerror.ERROR_SEEK: errno.EIO,
winerror.ERROR_SEEK_ON_DEVICE: errno.ESPIPE,
winerror.ERROR_SHARING_BUFFER_EXCEEDED: errno.ENFILE,
winerror.ERROR_SHARING_VIOLATION: errno.EACCES,
winerror.ERROR_STACK_OVERFLOW: errno.ENOMEM,
winerror.ERROR_SWAPERROR: errno.ENOENT,
winerror.ERROR_TOO_MANY_MODULES: errno.EMFILE,
winerror.ERROR_TOO_MANY_OPEN_FILES: errno.EMFILE,
winerror.ERROR_UNRECOGNIZED_MEDIA: errno.ENXIO,
winerror.ERROR_UNRECOGNIZED_VOLUME: errno.ENODEV,
winerror.ERROR_WAIT_NO_CHILDREN: errno.ECHILD,
winerror.ERROR_WRITE_FAULT: errno.EIO,
winerror.ERROR_WRITE_PROTECT: errno.EROFS,
}
def __init__(self, err):
self.win_errno, self.win_function, self.win_strerror = err
if self.win_strerror.endswith('.'):
self.win_strerror = self.win_strerror[:-1]
class WinIOError(WinError, IOError):
def __init__(self, err, filename=None):
WinError.__init__(self, err)
IOError.__init__(self, self.winerror_map.get(self.win_errno, 0),
self.win_strerror)
self.filename = filename
class WinOSError(WinError, OSError):
def __init__(self, err):
WinError.__init__(self, err)
OSError.__init__(self, self.winerror_map.get(self.win_errno, 0),
self.win_strerror)
def os_link(src, dst):
# NB will only succeed on NTFS
try:
win32file.CreateHardLink(dst, src)
except pywintypes.error, details:
raise WinOSError(details)
def nlinks(pathname):
"""Return number of hardlinks for the given file."""
try:
fh = win32file.CreateFile(pathname,
win32file.GENERIC_READ, win32file.FILE_SHARE_READ,
None, win32file.OPEN_EXISTING, 0, None)
res = win32file.GetFileInformationByHandle(fh)
fh.Close()
return res[7]
except pywintypes.error:
return os.stat(pathname).st_nlink
def testpid(pid):
'''return True if pid is still running or unable to
determine, False otherwise'''
try:
handle = win32api.OpenProcess(
win32con.PROCESS_QUERY_INFORMATION, False, pid)
if handle:
status = win32process.GetExitCodeProcess(handle)
return status == win32con.STILL_ACTIVE
except pywintypes.error, details:
return details[0] != winerror.ERROR_INVALID_PARAMETER
return True
def system_rcpath_win32():
'''return default os-specific hgrc search path'''
proc = win32api.GetCurrentProcess()
filename = win32process.GetModuleFileNameEx(proc, 0)
return [os.path.join(os.path.dirname(filename), 'mercurial.ini')]
class posixfile(object):
'''file object with posix-like semantics. on windows, normal
files can not be deleted or renamed if they are open. must open
with win32file.FILE_SHARE_DELETE. this flag does not exist on
windows <= nt.'''
# tried to use win32file._open_osfhandle to pass fd to os.fdopen,
# but does not work at all. wrap win32 file api instead.
def __init__(self, name, mode='rb'):
access = 0
if 'r' in mode or '+' in mode:
access |= win32file.GENERIC_READ
if 'w' in mode or 'a' in mode:
access |= win32file.GENERIC_WRITE
if 'r' in mode:
creation = win32file.OPEN_EXISTING
elif 'a' in mode:
creation = win32file.OPEN_ALWAYS
else:
creation = win32file.CREATE_ALWAYS
try:
self.handle = win32file.CreateFile(name,
access,
win32file.FILE_SHARE_READ |
win32file.FILE_SHARE_WRITE |
win32file.FILE_SHARE_DELETE,
None,
creation,
win32file.FILE_ATTRIBUTE_NORMAL,
0)
except pywintypes.error, err:
raise WinIOError(err, name)
self.closed = False
self.name = name
self.mode = mode
def read(self, count=-1):
try:
cs = cStringIO.StringIO()
while count:
wincount = int(count)
if wincount == -1:
wincount = 1048576
val, data = win32file.ReadFile(self.handle, wincount)
if not data: break
cs.write(data)
if count != -1:
count -= len(data)
return cs.getvalue()
except pywintypes.error, err:
raise WinIOError(err)
def write(self, data):
try:
if 'a' in self.mode:
win32file.SetFilePointer(self.handle, 0, win32file.FILE_END)
nwrit = 0
while nwrit < len(data):
val, nwrit = win32file.WriteFile(self.handle, data)
data = data[nwrit:]
except pywintypes.error, err:
raise WinIOError(err)
def seek(self, pos, whence=0):
try:
win32file.SetFilePointer(self.handle, int(pos), whence)
except pywintypes.error, err:
raise WinIOError(err)
def tell(self):
try:
return win32file.SetFilePointer(self.handle, 0,
win32file.FILE_CURRENT)
except pywintypes.error, err:
raise WinIOError(err)
def close(self):
if not self.closed:
self.handle = None
self.closed = True
def flush(self):
try:
win32file.FlushFileBuffers(self.handle)
except pywintypes.error, err:
raise WinIOError(err)
def truncate(self, pos=0):
try:
win32file.SetFilePointer(self.handle, int(pos),
win32file.FILE_BEGIN)
win32file.SetEndOfFile(self.handle)
except pywintypes.error, err:
raise WinIOError(err)