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#
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#
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# Copyright (C) 2007, 2008 Google Inc.
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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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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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# General Public License for more details.
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#
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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
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# 02110-1301, USA.
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"""Serializer abstraction module
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This module introduces a simple abstraction over the serialization
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backend (currently json).
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"""
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import simplejson
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import ConfigParser
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import re
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# Check whether the simplejson module supports indentation
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_JSON_INDENT = 2
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try:
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  simplejson.dumps(1, indent=_JSON_INDENT)
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except TypeError:
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  _JSON_INDENT = None
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_RE_EOLSP = re.compile('\s+$', re.MULTILINE)
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def Dump(data):
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  """Serialize a given object.
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  """
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  if _JSON_INDENT is None:
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    txt = simplejson.dumps(data)
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  else:
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    txt = simplejson.dumps(data, indent=_JSON_INDENT)
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  if not txt.endswith('\n'):
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    txt += '\n'
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  txt = _RE_EOLSP.sub("", txt)
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  return txt
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def Load(txt):
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  """Unserialize data from a string.
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  """
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  return simplejson.loads(txt)