Mercurial > hg
view mercurial/util_win32.py @ 5195:33015dac5df5
convert: fix mercurial_sink.putcommit
Changeset 4ebc8693ce72 added some code to putcommit to avoid creating a
revision that touches no files, but this can break regular conversions
from some repositories:
- conceptually, since we're converting a repo, we should try to make
the new hg repo as similar as possible to the original repo - we
should create a new changeset, even if the original revision didn't
touch any files (maybe the commit message had some important bit);
- even if a "regular" revision that doesn't touch any file may seem
weird (and maybe even broken), it's completely legitimate for a merge
revision to not touch any file, and, if we just skip it, the
converted repo will end up with wrong history and possibly an extra
head.
As an example, say the crew and main hg repos are sync'ed. Somebody
sends an important patch to the mailing list. Matt quickly applies
and pushes it. But at the same time somebody also applies it to crew
and pushes it. Suppose the commit message ended up being a bit
different (say, there was a typo and somebody didn't fix it) or that
the date ended up being different (because of different patch-applying
scripts): the changeset hashes will be different, but the manifests
will be the same.
Since both changesets were pushed to public repos, it's hard to recall
them. If both are merged, the manifest from the resulting merge
revision will have the exact same contents as its parents - i.e. the
merge revision really doesn't touch any file at all.
To keep the file filtering stuff "working", the generic code was changed
to skip empty revisions if we're filtering the repo, fixing a bug in the
process (we want parents[0] instead of tip).
author | Alexis S. L. Carvalho <alexis@cecm.usp.br> |
---|---|
date | Fri, 17 Aug 2007 20:18:05 -0300 |
parents | 81f8ff2a9bf2 |
children | 1b5b81d9039b 60bd4e707a7d |
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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 i18n import _ import errno, os, pywintypes, win32con, win32file, win32process import cStringIO, winerror from win32com.shell import shell,shellcon 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.lstat(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_win32(): '''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 or '+' 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) getuser_fallback = win32api.GetUserName def set_signal_handler_win32(): """Register a termination handler for console events including CTRL+C. python signal handlers do not work well with socket operations. """ def handler(event): win32process.ExitProcess(1) win32api.SetConsoleCtrlHandler(handler)