Mercurial > hg
view mercurial/util_win32.py @ 2439:e8c4f3d3df8c
extend network protocol to stop clients from locking servers
now all repositories have capabilities slot, tuple with list of names.
if 'unbundle' capability present, repo supports push where client does
not need to lock server. repository classes that have unbundle capability
also have unbundle method.
implemented for ssh now, will be base for push over http.
unbundle protocol acts this way. server tells client what heads it
has during normal negotiate step. client starts unbundle by repeat
server's heads back to it. if server has new heads, abort immediately.
otherwise, transfer changes to server. once data transferred, server
locks and checks heads again. if heads same, changes can be added.
else someone else added heads, and server aborts.
if client wants to force server to add heads, sends special heads list of
'force'.
author | Vadim Gelfer <vadim.gelfer@gmail.com> |
---|---|
date | Thu, 15 Jun 2006 16:37:23 -0700 |
parents | a600d9997521 |
children | b77a2ef61b81 |
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# 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 win32com.shell:shell,shellcon 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() try: # This will fail on windows < NT filename = win32process.GetModuleFileNameEx(proc, 0) except: filename = win32api.GetModuleFileName(0) return [os.path.join(os.path.dirname(filename), 'mercurial.ini')] def user_rcpath(): '''return os-specific hgrc search path to the user dir''' userdir = os.path.expanduser('~') if userdir == '~': # We are on win < nt: fetch the APPDATA directory location and use # the parent directory as the user home dir. appdir = shell.SHGetPathFromIDList( shell.SHGetSpecialFolderLocation(0, shellcon.CSIDL_APPDATA)) userdir = os.path.dirname(appdir) return os.path.join(userdir, 'mercurial.ini') class posixfile_nt(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, so do not use this class there.''' # 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 __iter__(self): for line in self.read().splitlines(True): yield line 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)