2206d795a1
git-svn-id: svn://svn.cy55.de/Zope3/src/cybertools/trunk@1871 fd906abe-77d9-0310-91a1-e0d9ade77398
136 lines
4.5 KiB
Python
136 lines
4.5 KiB
Python
##############################################################################
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#
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# Copyright (c) 2004 Zope Corporation and Contributors.
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# All Rights Reserved.
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#
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# This software is subject to the provisions of the Zope Public License,
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# Version 2.1 (ZPL). A copy of the ZPL should accompany this distribution.
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# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
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# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
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# FOR A PARTICULAR PURPOSE.
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#
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##############################################################################
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"""Python Page
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$Id$
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"""
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__docformat__ = 'restructuredtext'
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import new
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import re
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from cStringIO import StringIO
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from persistent import Persistent
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from zope.proxy import removeAllProxies
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from zope.security.untrustedpython.builtins import SafeBuiltins
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from zope.security.untrustedpython.rcompile import compile
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from zope.traversing.api import getParent, getPath
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from zope.app.container.contained import Contained
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#from zope.app.interpreter.interfaces import IInterpreter
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from zope.interface import implements
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from zope.app.i18n import ZopeMessageFactory as _
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from cybertools.pyscript.interfaces import IPythonScript, IScriptContainer
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class PythonScript(Contained, Persistent):
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"""Persistent Python Page - Content Type
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"""
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implements(IPythonScript)
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_v_compiled = None
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def __init__(self, source=u'', contentType=u'text/plain'):
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"""Initialize the object."""
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super(PythonScript, self).__init__()
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self.source = source
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self.contentType = contentType
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def __filename(self):
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if self.__parent__ is None:
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filename = 'N/A'
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else:
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filename = getPath(self)
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return filename
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def setSource(self, source):
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"""Set the source of the page and compile it.
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This method can raise a syntax error, if the source is not valid.
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"""
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self.__source = source
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self.__prepared_source = self.prepareSource(source)
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# Compile objects cannot be pickled
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self._v_compiled = Function(self.__prepared_source, self.__filename())
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_tripleQuotedString = re.compile(
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r"^([ \t]*)[uU]?([rR]?)(('''|\"\"\")(.*)\4)", re.MULTILINE | re.DOTALL)
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def prepareSource(self, source):
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"""Prepare source."""
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# compile() don't accept '\r' altogether
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source = source.replace("\r\n", "\n")
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source = source.replace("\r", "\n")
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if isinstance(source, unicode):
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# Use special conversion function to work around
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# compiler-module failure to handle unicode in literals
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try:
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source = source.encode('ascii')
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except UnicodeEncodeError:
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return self._tripleQuotedString.sub(_print_usrc, source)
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return self._tripleQuotedString.sub(r"\1print \2\3", source)
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def getSource(self):
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"""Get the original source code."""
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return self.__source
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source = property(getSource, setSource)
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def __call__(self, request, **kw):
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output = StringIO()
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if self._v_compiled is None:
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self._v_compiled = Function(self.__prepared_source,
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self.__filename())
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parent = getParent(self)
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kw['request'] = request
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kw['script'] = self
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kw['untrusted_output'] = kw['printed'] = output
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kw['context'] = parent
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kw['script_result'] = None
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if IScriptContainer.providedBy(parent):
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parent.updateGlobals(kw)
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self._v_compiled(kw)
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result = kw['script_result']
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if result == output:
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result = result.getvalue().decode('unicode-escape')
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return result
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class Function(object):
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"""A compiled function.
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"""
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def __init__(self, source, filename='<string>'):
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lines = []
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lines.insert(0, 'def dummy(): \n pass')
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for line in source.splitlines():
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lines.append(' ' + line)
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lines.append('script_result = dummy()')
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source = '\n'.join(lines)
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#print source
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self.code = compile(source, filename, 'exec')
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def __call__(self, globals):
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globals['__builtins__'] = SafeBuiltins
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exec self.code in globals, None
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def _print_usrc(match):
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string = match.group(3)
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raw = match.group(2)
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if raw:
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return match.group(1)+'print '+`string`
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return match.group(1)+'print '+match.group(3).encode('unicode-escape')
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