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      1 # Copyright (C) 2010 Google Inc. All rights reserved.
      2 #
      3 # Redistribution and use in source and binary forms, with or without
      4 # modification, are permitted provided that the following conditions are
      5 # met:
      6 # 
      7 #     * Redistributions of source code must retain the above copyright
      8 # notice, this list of conditions and the following disclaimer.
      9 #     * Redistributions in binary form must reproduce the above
     10 # copyright notice, this list of conditions and the following disclaimer
     11 # in the documentation and/or other materials provided with the
     12 # distribution.
     13 #     * Neither the name of Google Inc. nor the names of its
     14 # contributors may be used to endorse or promote products derived from
     15 # this software without specific prior written permission.
     16 # 
     17 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     18 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     19 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     20 # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     21 # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     22 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     23 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     24 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     25 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     26 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     27 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     28 
     29 from webkitpy.common.system.executive import ScriptError
     30 from webkitpy.common.system.deprecated_logging import log
     31 from webkitpy.tool.commands.stepsequence import StepSequence
     32 from webkitpy.tool.multicommandtool import AbstractDeclarativeCommand
     33 
     34 
     35 class AbstractSequencedCommand(AbstractDeclarativeCommand):
     36     steps = None
     37     def __init__(self):
     38         self._sequence = StepSequence(self.steps)
     39         AbstractDeclarativeCommand.__init__(self, self._sequence.options())
     40 
     41     def _prepare_state(self, options, args, tool):
     42         return None
     43 
     44     def execute(self, options, args, tool):
     45         try:
     46             state = self._prepare_state(options, args, tool)
     47         except ScriptError, e:
     48             log(e.message_with_output())
     49             exit(e.exit_code or 2)
     50 
     51         self._sequence.run_and_handle_errors(tool, options, state)
     52