def load(self, repo_path):
	repo_path = core.svn_path_canonicalize(repo_path)
	repos_ptr = repos.open(repo_path)
	fs_ptr = repos.fs(repos_ptr)
	rev = fs.youngest_rev(fs_ptr)
	base_root = fs.revision_root(fs_ptr, 0)
	root = fs.revision_root(fs_ptr, rev)
	hist = fs.node_history(root, self.root)
	while hist is not None:
	    hist = fs.history_prev(hist,0)
	    dummy,rev = fs.history_location(hist)
	    d = fs.revision_prop(fs_ptr, rev, core.SVN_PROP_REVISION_DATE)
	    author = fs.revision_prop(fs_ptr, rev, \
		    core.SVN_PROP_REVISION_AUTHOR)
	    if author == 'svnadmin':
		continue
	    self.last_author = author
	    self.last_date = core.svn_time_from_cstring(d) / 1000000
	    self.last_rev = rev
	    def authz_cb(root, path, pool):
		return 1
	    editor = SvnDumperEditor(self)
	    e_ptr, e_baton = delta.make_editor(editor)
	    repos.dir_delta(base_root, '', '', root, self.root, e_ptr, e_baton,
		authz_cb, 0, 1, 0, 0)
	    break

  def _print_tree(self, e_factory, base_rev=None, pass_root=0):
    if base_rev is None:
      # a specific base rev was not provided. use the transaction base,
      # or the previous revision
      if self.txn_ptr:
        base_rev = fs.txn_base_revision(self.txn_ptr)
      else:
        base_rev = self.rev - 1

    # get the current root
    if self.txn_ptr:
      root = fs.txn_root(self.txn_ptr)
    else:
      root = fs.revision_root(self.fs_ptr, self.rev)

    # the base of the comparison
    base_root = fs.revision_root(self.fs_ptr, base_rev)

    if pass_root:
      editor = e_factory(root, base_root)
    else:
      editor = e_factory()

    # construct the editor for printing these things out
    e_ptr, e_baton = delta.make_editor(editor)

    # compute the delta, printing as we go
    def authz_cb(root, path, pool):
      return 1
    repos.dir_delta(base_root, '', '', root, '',
		    e_ptr, e_baton, authz_cb, 0, 1, 0, 0)

def inner(pool, path, rev):
    repos_ptr = repos.svn_repos_open(path, pool)
    fs_ptr = repos.svn_repos_fs(repos_ptr)

    root = fs.revision_root(fs_ptr, rev, pool)
    base_rev = rev - 1

    # get all changes
    editor = repos.RevisionChangeCollector(fs_ptr, rev, pool)
    e_ptr, e_baton = delta.make_editor(editor, pool)
    repos.svn_repos_replay(root, e_ptr, e_baton, pool)

    changelist = editor.changes.items()
    changelist.sort()

    base_root = fs.revision_root(fs_ptr, base_rev, pool)

    l = []
    for filepath, change in changelist:
        d = {'path': filepath, 'info': ''}
        if change.path:
            if change.added:
                d['action'] = 'new'
            else:
                d['action'] = 'modify'
                differ = fs.FileDiff(base_root, change.path, root, filepath,
                    pool, '-L \t(original) -L \t(new) -u'.split(' '))
                d['info'] = differ.get_pipe().read()
        else:
            d['action'] = 'delete'
        l.append(d)
    return l

  def _print_tree(self, e_factory, rootpath='', base_rev=None, pass_root=0):
    # It no longer prints, it returns the editor made by e_factory which
    # contains the tree in a list.
    if base_rev is None:
      # a specific base rev was not provided. use the transaction base,
      # or the previous revision
      if self.txn_ptr:
        base_rev = fs.txn_base_revision(self.txn_ptr)
      else:
        base_rev = self.rev - 1

    # get the current root
    if self.txn_ptr:
      root = fs.txn_root(self.txn_ptr, self.pool)
    else:
      root = fs.revision_root(self.fs_ptr, self.rev, self.pool)

    # the base of the comparison
    base_root = fs.revision_root(self.fs_ptr, base_rev, self.pool)

    if pass_root:
      editor = e_factory(root, base_root)
    else:
      editor = e_factory()

    # construct the editor for printing these things out
    e_ptr, e_baton = delta.make_editor(editor, self.pool)

    # compute the delta, printing as we go
    def authz_cb(root, path, pool):
      return 1
    repos.dir_delta(base_root, '', '', root, rootpath.encode('utf-8'),
                    e_ptr, e_baton, authz_cb, 0, 1, 0, 0, self.pool)
    return editor

def blame(path, filename, rev=None):

  annotresult = {}
  path = core.svn_path_canonicalize(path)

  repos_ptr = repos.open(path)
  fsob = repos.fs(repos_ptr)

  if rev is None:
    rev = fs.youngest_rev(fsob)
  filedata = ''
  for i in range(0, rev+1):
    root = fs.revision_root(fsob, i)
    if fs.check_path(root, filename) != core.svn_node_none:
      first = i
      break
  print("First revision is %d" % first)
  print("Last revision is %d" % rev)
  for i in range(first, rev+1):
    previousroot = root
    root = fs.revision_root(fsob, i)
    if i != first:
      if not fs.contents_changed(root, filename, previousroot, filename):
        continue

    file = fs.file_contents(root, filename)
    previousdata = filedata
    filedata = ''
    while True:
      data = core.svn_stream_read(file, CHUNK_SIZE)
      if not data:
        break
      filedata = filedata + data

    print("Current revision is %d" % i)
    diffresult = difflib.ndiff(previousdata.splitlines(1),
                               filedata.splitlines(1))
    #    print ''.join(diffresult)
    k = 0
    for j in diffresult:
      if j[0] == ' ':
        if k in annotresult:
          k = k + 1
          continue
        else:
          annotresult[k] = (i, j[2:])
          k = k + 1
          continue
      elif j[0] == '?':
        continue
      annotresult[k] = (i, j[2:])
      if j[0] != '-':
        k = k + 1
#    print ''.join(diffresult)
#  print annotresult
  for x in range(len(annotresult.keys())):
     sys.stdout.write("Line %d (r%d):%s" % (x,
                                            annotresult[x][0],
                                            annotresult[x][1]))

 def get_changes(self, old_path, old_rev, new_path, new_rev,
                 ignore_ancestry=0):
     old_node = new_node = None
     old_rev = self.normalize_rev(old_rev)
     new_rev = self.normalize_rev(new_rev)
     if self.has_node(old_path, old_rev):
         old_node = self.get_node(old_path, old_rev)
     else:
         raise NoSuchNode(old_path, old_rev, 'The Base for Diff is invalid')
     if self.has_node(new_path, new_rev):
         new_node = self.get_node(new_path, new_rev)
     else:
         raise NoSuchNode(new_path, new_rev, 'The Target for Diff is invalid')
     if new_node.kind != old_node.kind:
         raise TracError('Diff mismatch: Base is a %s (%s in revision %s) '
                         'and Target is a %s (%s in revision %s).' \
                         % (old_node.kind, old_path, old_rev,
                            new_node.kind, new_path, new_rev))
     subpool = Pool(self.pool)
     if new_node.isdir:
         editor = DiffChangeEditor()
         e_ptr, e_baton = delta.make_editor(editor, subpool())
         old_root = fs.revision_root(self.fs_ptr, old_rev, subpool())
         new_root = fs.revision_root(self.fs_ptr, new_rev, subpool())
         def authz_cb(root, path, pool): return 1
         text_deltas = 0 # as this is anyway re-done in Diff.py...
         entry_props = 0 # "... typically used only for working copy updates"
         repos.svn_repos_dir_delta(old_root,
                                   _to_svn(self.scope + old_path), '',
                                   new_root,
                                   _to_svn(self.scope + new_path),
                                   e_ptr, e_baton, authz_cb,
                                   text_deltas,
                                   1, # directory
                                   entry_props,
                                   ignore_ancestry,
                                   subpool())
         for path, kind, change in editor.deltas:
             path = _from_svn(path)
             old_node = new_node = None
             if change != Changeset.ADD:
                 old_node = self.get_node(posixpath.join(old_path, path),
                                          old_rev)
             if change != Changeset.DELETE:
                 new_node = self.get_node(posixpath.join(new_path, path),
                                          new_rev)
             else:
                 kind = _kindmap[fs.check_path(old_root,
                                               _to_svn(self.scope,
                                                       old_node.path),
                                               subpool())]
             yield  (old_node, new_node, kind, change)
     else:
         old_root = fs.revision_root(self.fs_ptr, old_rev, subpool())
         new_root = fs.revision_root(self.fs_ptr, new_rev, subpool())
         if fs.contents_changed(old_root, _to_svn(self.scope, old_path),
                                new_root, _to_svn(self.scope, new_path),
                                subpool()):
             yield (old_node, new_node, Node.FILE, Changeset.EDIT)

 def test_unnamed_editor(self):
     """Test editor object without reference from interpreter"""
     # Check that the delta.Editor object has proper lifetime. Without
     # increment of the refcount in make_baton, the object was destroyed
     # immediately because the interpreter does not hold a reference to it.
     this_root = fs.revision_root(self.fs, self.rev)
     prev_root = fs.revision_root(self.fs, self.rev-1)
     e_ptr, e_baton = delta.make_editor(ChangeReceiver(this_root, prev_root))
     repos.dir_delta(prev_root, '', '', this_root, '', e_ptr, e_baton,
             _authz_callback, 1, 1, 0, 0)

  def test_dir_delta(self):
    """Test scope of dir_delta callbacks"""
    # Run dir_delta
    this_root = fs.revision_root(self.fs, self.rev)
    prev_root = fs.revision_root(self.fs, self.rev-1)
    editor = ChangeReceiver(this_root, prev_root)
    e_ptr, e_baton = delta.make_editor(editor)
    repos.dir_delta(prev_root, '', '', this_root, '', e_ptr, e_baton,
                    _authz_callback, 1, 1, 0, 0)

    # Check results
    self.assertEqual(editor.textdeltas[0].new_data, "This is a test.\n")
    self.assertEqual(editor.textdeltas[1].new_data, "A test.\n")
    self.assertEqual(len(editor.textdeltas),2)

 def add_history(self, path, revision, pool):
   # If filtering, only add the path and revision to the histories
   # list if they were actually changed in this revision (where
   # change means the path itself was changed, or one of its parents
   # was copied).  This is useful for omitting bubble-up directory
   # changes.
   if not self.oldest_rev:
     self.oldest_rev = revision
   else:
     assert(revision < self.oldest_rev)
     
   if not self.show_all_logs:
     rev_root = fs.revision_root(self.fs_ptr, revision)
     changed_paths = fs.paths_changed(rev_root)
     paths = changed_paths.keys()
     if path not in paths:
       # Look for a copied parent
       test_path = path
       found = 0
       while 1:
         off = test_path.rfind('/')
         if off < 0:
           break
         test_path = test_path[0:off]
         if test_path in paths:
           copyfrom_rev, copyfrom_path = fs.copied_from(rev_root, test_path)
           if copyfrom_rev >= 0 and copyfrom_path:
             found = 1
             break
       if not found:
         return
   self.histories.append([revision, _cleanup_path(path)])
   if self.limit and len(self.histories) == self.limit:
     raise core.SubversionException("", _SVN_ERR_CEASE_INVOCATION)

def putfile(fname, rpath, uname="", commitmsg=""):
  rpath = core.svn_path_canonicalize(rpath)
  repos_ptr = repos.open(rpath)
  fsob = repos.fs(repos_ptr)

  # open a transaction against HEAD
  rev = fs.youngest_rev(fsob)

  txn = repos.fs_begin_txn_for_commit(repos_ptr, rev, uname, commitmsg)

  root = fs.txn_root(txn)
  rev_root = fs.revision_root(fsob, rev)

  kind = fs.check_path(root, fname)
  if kind == core.svn_node_none:
    print("file '%s' does not exist, creating..." % fname)
    fs.make_file(root, fname)
  elif kind == core.svn_node_dir:
    print("File '%s' is a dir." % fname)
    return
  else:
    print("Updating file '%s'" % fname)

  handler, baton = fs.apply_textdelta(root, fname, None, None)

  ### it would be nice to get an svn_stream_t. for now, just load in the
  ### whole file and shove it into the FS.
  delta.svn_txdelta_send_string(open(fname, 'rb').read(),
                                handler, baton)

  newrev = repos.fs_commit_txn(repos_ptr, txn)
  print("revision: %s" % newrev)

 def _get_root(self, rev):
   try:
     return self.roots[rev]
   except KeyError:
     pass
   root = self.roots[rev] = _svnfs.revision_root(self.fs_ptr, rev)
   return root

    def __init__(self, path, rev, repos, pool=None, parent_root=None):
        self.fs_ptr = repos.fs_ptr
        self.scope = repos.scope
        self.pool = Pool(pool)
        pool = self.pool()
        self._scoped_path_utf8 = _to_svn(pool, self.scope, path)

        if parent_root:
            self.root = parent_root
        else:
            self.root = fs.revision_root(self.fs_ptr, rev, pool)
        node_type = fs.check_path(self.root, self._scoped_path_utf8, pool)
        if not node_type in _kindmap:
            raise NoSuchNode(path, rev)
        cp_utf8 = fs.node_created_path(self.root, self._scoped_path_utf8, pool)
        cp = _from_svn(cp_utf8)
        cr = fs.node_created_rev(self.root, self._scoped_path_utf8, pool)
        # Note: `cp` differs from `path` if the last change was a copy,
        #        In that case, `path` doesn't even exist at `cr`.
        #        The only guarantees are:
        #          * this node exists at (path,rev)
        #          * the node existed at (created_path,created_rev)
        # Also, `cp` might well be out of the scope of the repository,
        # in this case, we _don't_ use the ''create'' information.
        if _is_path_within_scope(self.scope, cp):
            self.created_rev = cr
            self.created_path = _path_within_scope(self.scope, cp)
        else:
            self.created_rev, self.created_path = rev, path
        # TODO: check node id
        Node.__init__(self, repos, path, rev, _kindmap[node_type])

 def get_copy_ancestry(self):
     """Retrieve the list of `(path,rev)` copy ancestors of this node.
     Most recent ancestor first. Each ancestor `(path, rev)` corresponds
     to the path and revision of the source at the time the copy or move
     operation was performed.
     """
     ancestors = []
     previous = (self._scoped_path_utf8, self.rev, self.root)
     while previous:
         (previous_path, previous_rev, previous_root) = previous
         previous = None
         root_path = fs.closest_copy(previous_root, previous_path)
         if root_path:
             (root, path) = root_path
             path = path.lstrip('/')
             rev = fs.revision_root_revision(root)
             relpath = None
             if path != previous_path:
                 # `previous_path` is a subfolder of `path` and didn't
                 # change since `path` was copied
                 relpath = previous_path[len(path):].strip('/')
             copied_from = fs.copied_from(root, path)
             if copied_from:
                 (rev, path) = copied_from
                 path = path.lstrip('/')
                 root = fs.revision_root(self.fs_ptr, rev, self.pool())
                 if relpath:
                     path += '/' + relpath
                 ui_path = _path_within_scope(self.scope, _from_svn(path))
                 if ui_path:
                     ancestors.append((ui_path, rev))
                 previous = (path, rev, root)
     return ancestors

    def __init__(self, path, rev, repos, pool=None, parent=None):
        self.path = path
        self.repos = repos
        self.fs_ptr = repos.fs_ptr
        self.scope = repos.scope
        self._scoped_svn_path = _to_svn(self.scope, path)
        self.pool = Pool(pool)
        self._requested_rev = rev
        pool = self.pool()
        
        if parent and parent._requested_rev == self._requested_rev:
            self.root = parent.root
        else:
            self.root = fs.revision_root(self.fs_ptr, rev, self.pool())
        node_type = fs.check_path(self.root, self._scoped_svn_path, pool)
        if not node_type in _kindmap:
            raise Exception('No such node')
        
        if _kindmap[node_type] == 'F':
            self.isdir = False
            self.isfile = True
        elif _kindmap[node_type] == 'D':
            self.isdir = True
            self.isfile = False

        
        cr = fs.node_created_rev(self.root, self._scoped_svn_path, pool)
        cp = fs.node_created_path(self.root, self._scoped_svn_path, pool)
        
        if _is_path_within_scope(self.scope, cp):
            self.created_rev = cr
            self.created_path = _path_within_scope(self.scope, _from_svn(cp))
        else:
            self.created_rev, self.created_path = rev, path
        self.rev = self.created_rev

 def has_node(self, path, rev=None, pool=None):
     if not pool:
         pool = self.pool
     rev = self.normalize_rev(rev)
     rev_root = fs.revision_root(self.fs_ptr, rev, pool())
     node_type = fs.check_path(rev_root, _to_svn(self.scope, path), pool())
     return node_type in _kindmap

  def test_dir_delta(self):
    """Test scope of dir_delta callbacks"""
    # Run dir_delta
    this_root = fs.revision_root(self.fs, self.rev)
    prev_root = fs.revision_root(self.fs, self.rev-1)
    editor = ChangeReceiver(this_root, prev_root)
    e_ptr, e_baton = delta.make_editor(editor)
    repos.dir_delta(prev_root, '', '', this_root, '', e_ptr, e_baton,
                    _authz_callback, 1, 1, 0, 0)

    # Check results.
    # Ignore the order in which the editor delivers the two sibling files.
    self.assertEqual(set([editor.textdeltas[0].new_data,
                          editor.textdeltas[1].new_data]),
                     set(["This is a test.\n", "A test.\n"]))
    self.assertEqual(len(editor.textdeltas), 2)

 def _history(self, svn_path, start, end, pool):
     """`svn_path` must be a full scope path, UTF-8 encoded string.
     
     Generator yielding `(path, rev)` pairs, where `path` is an `unicode`
     object.
     Must start with `(path, created_rev)`.
     """
     
     if start < end:
         start, end = end, start
     
     root = fs.revision_root(self.fs_ptr, start, pool())
     tmp1 = Pool(pool)
     tmp2 = Pool(pool)
     history_ptr = fs.node_history(root, svn_path, tmp1())
     cross_copies = 1
     while history_ptr:
         history_ptr = fs.history_prev(history_ptr, cross_copies, tmp2())
         tmp1.clear()
         tmp1, tmp2 = tmp2, tmp1
         if history_ptr:
             path, rev = fs.history_location(history_ptr, tmp2())
             tmp2.clear()
             if rev < end:
                 break
             path = _from_svn(path)
             yield path, rev
     del tmp1
     del tmp2

 def add_history(self, path, revision, pool):
   # If filtering, only add the path and revision to the histories
   # list if they were actually changed in this revision (where
   # change means the path itself was changed, or one of its parents
   # was copied).  This is useful for omitting bubble-up directory
   # changes.
   if not self.show_all_logs:
     rev_root = fs.revision_root(self.fs_ptr, revision, pool)
     changed_paths = fs.paths_changed(rev_root, pool)
     paths = changed_paths.keys()
     if path not in paths:
       # Look for a copied parent
       test_path = path
       found = 0
       subpool = core.svn_pool_create(pool)
       while 1:
         core.svn_pool_clear(subpool)
         off = string.rfind(test_path, '/')
         if off < 0:
           break
         test_path = test_path[0:off]
         if test_path in paths:
           copyfrom_rev, copyfrom_path = \
                         fs.copied_from(rev_root, test_path, subpool)
           if copyfrom_rev >= 0 and copyfrom_path:
             found = 1
             break
       core.svn_pool_destroy(subpool)
       if not found:
         return
   self.histories[revision] = _cleanup_path(path)

    def __init__(self, path, rev, authz, scope, fs_ptr):
        self.authz = authz
        self.scope = scope
        if scope != '/':
            self.scoped_path = scope + path
        else:
            self.scoped_path = path
        self.fs_ptr = fs_ptr
        self._requested_rev = rev

        self.root = fs.revision_root(fs_ptr, rev)
        node_type = fs.check_path(self.root, self.scoped_path)
        if not node_type in _kindmap:
            raise TracError, "No node at %s in revision %s" % (path, rev)
        self.created_rev = fs.node_created_rev(self.root, self.scoped_path)
        self.created_path = fs.node_created_path(self.root, self.scoped_path)
        # Note: 'created_path' differs from 'path' if the last change was a copy,
        #        and furthermore, 'path' might not exist at 'create_rev'.
        #        The only guarantees are:
        #          * this node exists at (path,rev)
        #          * the node existed at (created_path,created_rev)
        # TODO: check node id
        self.rev = self.created_rev

        Node.__init__(self, path, self.rev, _kindmap[node_type])

    def _history(self, path, start, end, pool):
        """`path` is a unicode path in the scope.

        Generator yielding `(path, rev)` pairs, where `path` is an `unicode`
        object. Must start with `(path, created rev)`.

        (wraps ``fs.node_history``)
        """
        path_utf8 = _to_svn(pool(), self.scope, path)
        if start < end:
            start, end = end, start
        if (start, end) == (1, 0): # only happens for empty repos
            return
        root = fs.revision_root(self.fs_ptr, start, pool())
        # fs.node_history leaks when path doesn't exist (#6588)
        if fs.check_path(root, path_utf8, pool()) == core.svn_node_none:
            return
        tmp1 = Pool(pool)
        tmp2 = Pool(pool)
        history_ptr = fs.node_history(root, path_utf8, tmp1())
        cross_copies = 1
        while history_ptr:
            history_ptr = fs.history_prev(history_ptr, cross_copies, tmp2())
            tmp1.clear()
            tmp1, tmp2 = tmp2, tmp1
            if history_ptr:
                path_utf8, rev = fs.history_location(history_ptr, tmp2())
                tmp2.clear()
                if rev < end:
                    break
                path = _from_svn(path_utf8)
                yield path, rev
        del tmp1
        del tmp2