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Viewing changes to bzrlib/_dirstate_helpers_pyx.pyx

  • Committer: Martin Pool
  • Date: 2010-08-18 07:25:22 UTC
  • mto: This revision was merged to the branch mainline in revision 5383.
  • Revision ID: mbp@sourcefrog.net-20100818072522-uk3gsazoia3l3s0a
Start adding 'what's new in 2.3'

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bzrlib/_dirstate_helpers_pyx.pyx
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# Copyright (C) 2007-2010 Canonical Ltd
 
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# Copyright (C) 2007, 2008, 2010 Canonical Ltd
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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    # ??? memrchr is a GNU extension :(
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    # void *memrchr(void *s, int c, size_t len)
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# cimport all of the definitions we will need to access
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from _static_tuple_c cimport import_static_tuple_c, StaticTuple, \
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    StaticTuple_New, StaticTuple_SET_ITEM
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import_static_tuple_c()
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cdef void* _my_memrchr(void *s, int c, size_t n): # cannot_raise
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    # memrchr seems to be a GNU extension, so we have to implement it ourselves
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        :param new_block: This is to let the caller know that it needs to
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            create a new directory block to store the next entry.
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        """
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        cdef StaticTuple path_name_file_id_key
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        cdef StaticTuple tmp
 
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        cdef object path_name_file_id_key
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        cdef char *entry_size_cstr
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        cdef unsigned long int entry_size
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        cdef char* executable_cstr
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        # Build up the key that will be used.
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        # By using <object>(void *) Pyrex will automatically handle the
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        # Py_INCREF that we need.
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        cur_dirname = <object>p_current_dirname[0]
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        # Use StaticTuple_New to pre-allocate, rather than creating a regular
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        # tuple and passing it to the StaticTuple constructor.
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        # path_name_file_id_key = StaticTuple(<object>p_current_dirname[0],
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        #                          self.get_next_str(),
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        #                          self.get_next_str(),
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        #                         )
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        tmp = StaticTuple_New(3)
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        Py_INCREF(cur_dirname); StaticTuple_SET_ITEM(tmp, 0, cur_dirname)
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        cur_basename = self.get_next_str()
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        cur_file_id = self.get_next_str()
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        Py_INCREF(cur_basename); StaticTuple_SET_ITEM(tmp, 1, cur_basename)
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        Py_INCREF(cur_file_id); StaticTuple_SET_ITEM(tmp, 2, cur_file_id)
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        path_name_file_id_key = tmp
 
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        path_name_file_id_key = (<object>p_current_dirname[0],
 
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                                 self.get_next_str(),
 
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                                 self.get_next_str(),
 
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                                )
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        # Parse all of the per-tree information. current has the information in
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        # the same location as parent trees. The only difference is that 'info'
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            executable_cstr = self.get_next(&cur_size)
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            is_executable = (executable_cstr[0] == c'y')
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            info = self.get_next_str()
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            # TODO: If we want to use StaticTuple_New here we need to be pretty
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            #       careful. We are relying on a bit of Pyrex
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            #       automatic-conversion from 'int' to PyInt, and that doesn't
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            #       play well with the StaticTuple_SET_ITEM macro.
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            #       Timing doesn't (yet) show a worthwile improvement in speed
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            #       versus complexity and maintainability.
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            # tmp = StaticTuple_New(5)
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            # Py_INCREF(minikind); StaticTuple_SET_ITEM(tmp, 0, minikind)
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            # Py_INCREF(fingerprint); StaticTuple_SET_ITEM(tmp, 1, fingerprint)
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            # Py_INCREF(entry_size); StaticTuple_SET_ITEM(tmp, 2, entry_size)
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            # Py_INCREF(is_executable); StaticTuple_SET_ITEM(tmp, 3, is_executable)
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            # Py_INCREF(info); StaticTuple_SET_ITEM(tmp, 4, info)
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            # PyList_Append(trees, tmp)
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            PyList_Append(trees, StaticTuple(
 
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            PyList_Append(trees, (
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                minikind,     # minikind
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                fingerprint,  # fingerprint
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                entry_size,   # size
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    # _st mode of the compiled stat objects.
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    cdef int minikind, saved_minikind
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    cdef void * details
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    cdef int worth_saving
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    minikind = minikind_from_mode(stat_value.st_mode)
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    if 0 == minikind:
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        return None
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    # If we have gotten this far, that means that we need to actually
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    # process this entry.
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    link_or_sha1 = None
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    worth_saving = 1
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    if minikind == c'f':
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        executable = self._is_executable(stat_value.st_mode,
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                                         saved_executable)
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            entry[1][0] = ('f', link_or_sha1, stat_value.st_size,
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                           executable, packed_stat)
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        else:
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            # This file is not worth caching the sha1. Either it is too new, or
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            # it is newly added. Regardless, the only things we are changing
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            # are derived from the stat, and so are not worth caching. So we do
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            # *not* set the IN_MEMORY_MODIFIED flag. (But we'll save the
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            # updated values if there is *other* data worth saving.)
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            entry[1][0] = ('f', '', stat_value.st_size, executable,
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                           DirState.NULLSTAT)
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            worth_saving = 0
 
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            entry[1][0] = ('f', '', stat_value.st_size,
 
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                           executable, DirState.NULLSTAT)
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    elif minikind == c'd':
 
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        link_or_sha1 = None
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        entry[1][0] = ('d', '', 0, False, packed_stat)
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        if saved_minikind != c'd':
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            # This changed from something into a directory. Make sure we
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                self._get_block_entry_index(entry[0][0], entry[0][1], 0)
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            self._ensure_block(block_index, entry_index,
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                               pathjoin(entry[0][0], entry[0][1]))
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        else:
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            # Any changes are derived trivially from the stat object, not worth
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            # re-writing a dirstate for just this
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            worth_saving = 0
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    elif minikind == c'l':
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        if saved_minikind == c'l':
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            # If the object hasn't changed kind, it isn't worth saving the
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            # dirstate just for a symlink. The default is 'fast symlinks' which
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            # save the target in the inode entry, rather than separately. So to
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            # stat, we've already read everything off disk.
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            worth_saving = 0
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        link_or_sha1 = self._read_link(abspath, saved_link_or_sha1)
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        if self._cutoff_time is None:
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            self._sha_cutoff_time()
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        else:
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            entry[1][0] = ('l', '', stat_value.st_size,
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                           False, DirState.NULLSTAT)
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    if worth_saving:
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        # Note, even though _mark_modified will only set
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        # IN_MEMORY_HASH_MODIFIED, it still isn't worth 
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        self._mark_modified([entry])
 
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    self._dirblock_state = DirState.IN_MEMORY_MODIFIED
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    return link_or_sha1
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