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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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"""Helper functions for Walkdirs on win32."""
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cdef extern from "python-compat.h":
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cdef extern from "_walkdirs_win32.h":
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ctypedef _HANDLE *HANDLE
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cdef readonly double st_ctime
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cdef readonly double st_mtime
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cdef readonly double st_atime
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# We can't just declare this as 'readonly' because python2.4 doesn't define
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# T_LONGLONG as a structure member. So instead we just use a property that
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# will convert it correctly anyway.
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cdef readonly __int64 st_size
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# os.stat always returns 0, so we hard code it here
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# st_uid and st_gid required for some external tools like bzr-git & dulwich
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cdef readonly int st_dev
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cdef readonly int st_ino
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def __repr__(self):
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"""Repr is the same as a Stat object.
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cdef __int64 _get_size(WIN32_FIND_DATAW *data): # cannot_raise
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cdef __int64 _get_size(WIN32_FIND_DATAW *data):
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# Pyrex casts a DWORD into a PyLong anyway, so it is safe to do << 32
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return ((<__int64>data.nFileSizeHigh) << 32) + data.nFileSizeLow
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cdef double _ftime_to_timestamp(FILETIME *ft): # cannot_raise
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cdef double _ftime_to_timestamp(FILETIME *ft):
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"""Convert from a FILETIME struct into a floating point timestamp.
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The fields of a FILETIME structure are the hi and lo part
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cdef class Win32ReadDir:
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"""Read directories on win32."""
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cdef class Win32Finder:
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"""A class which encapsulates the search of files in a given directory"""
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cdef object _directory_kind
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cdef object _file_kind
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self._directory_kind = _readdir_py._directory
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self._file_kind = _readdir_py._file
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def top_prefix_to_starting_dir(self, top, prefix=""):
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"""See DirReader.top_prefix_to_starting_dir."""
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from bzrlib import osutils
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return (osutils.safe_utf8(prefix), None, None, None,
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osutils.safe_unicode(top))
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cdef object _last_dirblock
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def __init__(self, top, prefix=""):
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self._prefix = prefix
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self._directory_kind = osutils._directory_kind
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self._file_kind = osutils._formats[stat.S_IFREG]
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self._pending = [(osutils.safe_utf8(prefix), osutils.safe_unicode(top))]
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self._last_dirblock = None
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cdef object _get_kind(self, WIN32_FIND_DATAW *data):
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if data.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY:
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statvalue.st_ctime = _ftime_to_timestamp(&data.ftCreationTime)
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statvalue.st_mtime = _ftime_to_timestamp(&data.ftLastWriteTime)
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statvalue.st_atime = _ftime_to_timestamp(&data.ftLastAccessTime)
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statvalue._st_size = _get_size(data)
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statvalue.st_size = _get_size(data)
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def read_dir(self, prefix, top):
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"""Win32 implementation of DirReader.read_dir.
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def _get_files_in(self, directory, relprefix):
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"""Return the dirblock for all files in the given directory.
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:seealso: DirReader.read_dir
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:param directory: A path that can directly access the files on disk.
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Should be a Unicode object.
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:param relprefix: A psuedo path for these files (as inherited from the
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original 'prefix=XXX' when instantiating this class.)
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It should be a UTF-8 string.
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:return: A dirblock for all the files of the form
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[(utf8_relpath, utf8_fname, kind, _Win32Stat, unicode_abspath)]
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cdef WIN32_FIND_DATAW search_data
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cdef HANDLE hFindFile
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name_unicode = _get_name(&search_data)
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name_utf8 = PyUnicode_AsUTF8String(name_unicode)
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PyList_Append(dirblock,
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(relprefix + name_utf8, name_utf8,
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PyList_Append(dirblock,
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(relprefix + name_utf8, name_utf8,
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self._get_kind(&search_data),
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self._get_stat_value(&search_data),
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top_slash + name_unicode))
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directory + name_unicode))
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result = FindNextFileW(hFindFile, &search_data)
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# FindNextFileW sets GetLastError() == ERROR_NO_MORE_FILES when it
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# TODO: We should probably raise an exception if FindClose
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# returns an error, however, I don't want to supress an
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# earlier Exception, so for now, I'm ignoring this
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cdef _update_pending(self):
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"""If we had a result before, add the subdirs to pending."""
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if self._last_dirblock is not None:
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# push the entries left in the dirblock onto the pending queue
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# we do this here, because we allow the user to modified the
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# queue before the next iteration
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for d in reversed(self._last_dirblock):
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if d[2] == self._directory_kind:
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self._pending.append((d[0], d[-1]))
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self._last_dirblock = None
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self._update_pending()
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if not self._pending:
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raise StopIteration()
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relroot, top = self._pending.pop()
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# NB: At the moment Pyrex doesn't support Unicode literals, which means
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# that all of these string literals are going to be upcasted to Unicode
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# Maybe we could use unicode(x) during __init__?
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relprefix = relroot + '/'
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top_slash = top + '/'
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dirblock = self._get_files_in(top_slash, relprefix)
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dirblock.sort(key=operator.itemgetter(1))
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"""Equivalent to os.lstat, except match Win32ReadDir._get_stat_value.
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return wrap_stat(os.lstat(path))
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"""Like os.fstat, except match Win32ReadDir._get_stat_value
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return wrap_stat(os.fstat(fd))
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"""Return a _Win32Stat object, based on the given stat result.
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On Windows, os.fstat(open(fname).fileno()) != os.lstat(fname). This is
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generally because os.lstat and os.fstat differ in what they put into st_ino
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and st_dev. What gets set where seems to also be dependent on the python
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version. So we always set it to 0 to avoid worrying about it.
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cdef _Win32Stat statvalue
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statvalue = _Win32Stat()
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statvalue.st_mode = st.st_mode
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statvalue.st_ctime = st.st_ctime
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statvalue.st_mtime = st.st_mtime
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statvalue.st_atime = st.st_atime
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statvalue._st_size = st.st_size
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self._last_dirblock = dirblock
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return (relroot, top), dirblock
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def _walkdirs_utf8_win32_find_file(top, prefix=""):
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"""Implement a version of walkdirs_utf8 for win32.
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This uses the find files api to both list the files and to stat them.
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return Win32Finder(top, prefix=prefix)