first add files

1 files changed, 90 insertions, 0 deletions

diff --git a/lib/pycparser/__init__.py b/lib/pycparser/__init__.py
new file mode 100644
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+++ b/lib/pycparser/__init__.py
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+#-----------------------------------------------------------------
+# pycparser: __init__.py
+#
+# This package file exports some convenience functions for
+# interacting with pycparser
+#
+# Eli Bendersky [https://eli.thegreenplace.net/]
+# License: BSD
+#-----------------------------------------------------------------
+__all__ = ['c_lexer', 'c_parser', 'c_ast']
+__version__ = '2.21'
+
+import io
+from subprocess import check_output
+from .c_parser import CParser
+
+
+def preprocess_file(filename, cpp_path='cpp', cpp_args=''):
+    """ Preprocess a file using cpp.
+
+        filename:
+            Name of the file you want to preprocess.
+
+        cpp_path:
+        cpp_args:
+            Refer to the documentation of parse_file for the meaning of these
+            arguments.
+
+        When successful, returns the preprocessed file's contents.
+        Errors from cpp will be printed out.
+    """
+    path_list = [cpp_path]
+    if isinstance(cpp_args, list):
+        path_list += cpp_args
+    elif cpp_args != '':
+        path_list += [cpp_args]
+    path_list += [filename]
+
+    try:
+        # Note the use of universal_newlines to treat all newlines
+        # as \n for Python's purpose
+        text = check_output(path_list, universal_newlines=True)
+    except OSError as e:
+        raise RuntimeError("Unable to invoke 'cpp'.  " +
+            'Make sure its path was passed correctly\n' +
+            ('Original error: %s' % e))
+
+    return text
+
+
+def parse_file(filename, use_cpp=False, cpp_path='cpp', cpp_args='',
+               parser=None):
+    """ Parse a C file using pycparser.
+
+        filename:
+            Name of the file you want to parse.
+
+        use_cpp:
+            Set to True if you want to execute the C pre-processor
+            on the file prior to parsing it.
+
+        cpp_path:
+            If use_cpp is True, this is the path to 'cpp' on your
+            system. If no path is provided, it attempts to just
+            execute 'cpp', so it must be in your PATH.
+
+        cpp_args:
+            If use_cpp is True, set this to the command line arguments strings
+            to cpp. Be careful with quotes - it's best to pass a raw string
+            (r'') here. For example:
+            r'-I../utils/fake_libc_include'
+            If several arguments are required, pass a list of strings.
+
+        parser:
+            Optional parser object to be used instead of the default CParser
+
+        When successful, an AST is returned. ParseError can be
+        thrown if the file doesn't parse successfully.
+
+        Errors from cpp will be printed out.
+    """
+    if use_cpp:
+        text = preprocess_file(filename, cpp_path, cpp_args)
+    else:
+        with io.open(filename) as f:
+            text = f.read()
+
+    if parser is None:
+        parser = CParser()
+    return parser.parse(text, filename)