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src/subversion/tools/examples/svnshell.py  view on Meta::CPAN

    sys.exit(0)

  def _path_to_parts(self, path):
    return [_f for _f in path.split('/') if _f]

  def _parts_to_path(self, parts):
    return '/' + '/'.join(parts)

  def _parse_path(self, path):
    # cleanup leading, trailing, and duplicate '/' characters
    newpath = self._parts_to_path(self._path_to_parts(path))

    # if PATH is absolute, use it, else append it to the existing path.
    if path.startswith('/') or self.path == '/':
      newpath = '/' + newpath
    else:
      newpath = self.path + '/' + newpath

    # cleanup '.' and '..'
    parts = self._path_to_parts(newpath)
    finalparts = []
    for part in parts:
      if part == '.':
        pass
      elif part == '..':
        if len(finalparts) != 0:
          finalparts.pop(-1)
      else:
        finalparts.append(part)

    # finally, return the calculated path
    return self._parts_to_path(finalparts)

  def _format_date(self, date):
    date = core.svn_time_from_cstring(date)
    date = time.asctime(time.localtime(date / 1000000))
    return date[4:-8]

  def _do_path_landing(self):
    """try to land on self.path as a directory in root, failing up to '/'"""
    not_found = 1
    newpath = self.path
    while not_found:
      kind = fs.check_path(self.root, newpath)
      if kind == core.svn_node_dir:
        not_found = 0
      else:
        parts = self._path_to_parts(newpath)
        parts.pop(-1)
        newpath = self._parts_to_path(parts)
    self.path = newpath

  def _setup_prompt(self):
    """present the prompt and handle the user's input"""
    if self.is_rev:
      self.prompt = "<rev: " + str(self.rev)
    else:
      self.prompt = "<txn: " + self.txn
    self.prompt += " " + self.path + ">$ "

  def _complete(self, text, line, begidx, endidx, limit_node_kind=None):
    """Generic tab completer.  Takes the 4 standard parameters passed to a
    cmd.Cmd completer function, plus LIMIT_NODE_KIND, which should be a
    svn.core.svn_node_foo constant to restrict the returned completions to, or
    None for no limit.  Catches and displays exceptions, because otherwise
    they are silently ignored - which is quite frustrating when debugging!"""
    try:
      args = line.split()
      if len(args) > 1:
        arg = args[1]
      else:
        arg = ""
      dirs = arg.split('/')
      user_elem = dirs[-1]
      user_dir = "/".join(dirs[:-1] + [''])

      canon_dir = self._parse_path(user_dir)

      entries = fs.dir_entries(self.root, canon_dir)
      acceptable_completions = []
      for name, dirent_t in entries.items():
        if not name.startswith(user_elem):
          continue
        if limit_node_kind and dirent_t.kind != limit_node_kind:
          continue
        if dirent_t.kind == core.svn_node_dir:
          name += '/'
        acceptable_completions.append(name)
      if limit_node_kind == core.svn_node_dir or not limit_node_kind:
        if user_elem in ('.', '..'):
          for extraname in ('.', '..'):
            if extraname.startswith(user_elem):
              acceptable_completions.append(extraname + '/')
      return acceptable_completions
    except:
      ei = sys.exc_info()
      sys.stderr.write("EXCEPTION WHILST COMPLETING\n")
      import traceback
      traceback.print_tb(ei[2])
      sys.stderr.write("%s: %s\n" % (ei[0], ei[1]))
      raise

  def complete_cd(self, text, line, begidx, endidx):
    return self._complete(text, line, begidx, endidx, core.svn_node_dir)

  def complete_cat(self, text, line, begidx, endidx):
    return self._complete(text, line, begidx, endidx, core.svn_node_file)

  def complete_ls(self, text, line, begidx, endidx):
    return self._complete(text, line, begidx, endidx)

  def complete_pcat(self, text, line, begidx, endidx):
    return self._complete(text, line, begidx, endidx)


def _basename(path):
  "Return the basename for a '/'-separated path."
  idx = path.rfind('/')
  if idx == -1:
    return path
  return path[idx+1:]


def usage(exit):
  if exit:
    output = sys.stderr
  else:
    output = sys.stdout
  output.write(
    "usage: %s REPOS_PATH\n"
    "\n"
    "Once the program has started, type 'help' at the prompt for hints on\n"
    "using the shell.\n" % sys.argv[0])
  sys.exit(exit)

def main():
  if len(sys.argv) != 2:
    usage(1)

  SVNShell(sys.argv[1])

if __name__ == '__main__':
  main()