76 lines
2.1 KiB
Python
76 lines
2.1 KiB
Python
#-----------------------------------------------------------------
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# pycparser: __init__.py
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#
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# This package file exports some convenience functions for
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# interacting with pycparser
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#
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# Copyright (C) 2008-2009, Eli Bendersky
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# License: LGPL
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#-----------------------------------------------------------------
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__all__ = ['c_lexer', 'c_parser', 'c_ast']
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__version__ = '1.05'
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from subprocess import Popen, PIPE
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from types import ListType
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from c_parser import CParser
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def parse_file( filename, use_cpp=False,
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cpp_path='cpp', cpp_args=''):
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""" Parse a C file using pycparser.
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filename:
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Name of the file you want to parse.
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use_cpp:
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Set to True if you want to execute the C pre-processor
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on the file prior to parsing it.
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cpp_path:
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If use_cpp is True, this is the path to 'cpp' on your
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system. If no path is provided, it attempts to just
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execute 'cpp', so it must be in your PATH.
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cpp_args:
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If use_cpp is True, set this to the command line
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arguments strings to cpp. Be careful with quotes -
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it's best to pass a raw string (r'') here.
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For example:
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r'-I../utils/fake_libc_include'
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If several arguments are required, pass a list of
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strings.
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When successful, an AST is returned. ParseError can be
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thrown if the file doesn't parse successfully.
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Errors from cpp will be printed out.
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"""
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if use_cpp:
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path_list = [cpp_path]
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if isinstance(cpp_args, ListType):
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path_list += cpp_args
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elif cpp_args != '':
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path_list += [cpp_args]
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path_list += [filename]
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# Note the use of universal_newlines to treat all newlines
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# as \n for Python's purpose
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#
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pipe = Popen( path_list,
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stdout=PIPE,
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universal_newlines=True)
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text = pipe.communicate()[0]
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else:
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text = open(filename).read()
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parser = CParser()
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return parser.parse(text, filename)
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if __name__ == "__main__":
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pass
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