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76 lines
3.0 KiB
Python
76 lines
3.0 KiB
Python
###
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# Copyright (c) 2004-2005, Jeremiah Fincher
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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#
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# * Redistributions of source code must retain the above copyright notice,
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# this list of conditions, and the following disclaimer.
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# * Redistributions in binary form must reproduce the above copyright notice,
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# this list of conditions, and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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# * Neither the name of the author of this software nor the name of
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# contributors to this software may be used to endorse or promote products
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# derived from this software without specific prior written consent.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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###
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class Reader(object):
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def __init__(self, Creator, *args, **kwargs):
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self.Creator = Creator
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self.args = args
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self.kwargs = kwargs
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self.creator = None
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self.modifiedCreator = False
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self.indent = None
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def normalizeCommand(self, s):
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return s.lower()
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def readFile(self, filename):
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self.read(file(filename))
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def read(self, fd):
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lineno = 0
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for line in fd:
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lineno += 1
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if not line.strip():
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continue
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line = line.rstrip('\r\n')
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line = line.expandtabs()
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s = line.lstrip(' ')
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indent = len(line) - len(s)
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if indent != self.indent:
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# New indentation level.
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if self.creator is not None:
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self.creator.finish()
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self.creator = self.Creator(*self.args, **self.kwargs)
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self.modifiedCreator = False
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self.indent = indent
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(command, rest) = s.split(None, 1)
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command = self.normalizeCommand(command)
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self.modifiedCreator = True
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if hasattr(self.creator, command):
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command = getattr(self.creator, command)
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command(rest, lineno)
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else:
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self.creator.badCommand(command, rest, lineno)
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if self.modifiedCreator:
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self.creator.finish()
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# vim:set shiftwidth=4 tabstop=4 expandtab textwidth=79:
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