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111 lines
2.9 KiB
Python
111 lines
2.9 KiB
Python
# Parse Makefiles and Python Setup(.in) files.
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import re
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# Extract variable definitions from a Makefile.
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# Return a dictionary mapping names to values.
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# May raise IOError.
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makevardef = re.compile('^([a-zA-Z0-9_]+)[ \t]*=(.*)')
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def getmakevars(filename):
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variables = {}
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fp = open(filename)
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pendingline = ""
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try:
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while 1:
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line = fp.readline()
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if pendingline:
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line = pendingline + line
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pendingline = ""
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if not line:
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break
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if line.endswith('\\\n'):
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pendingline = line[:-2]
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matchobj = makevardef.match(line)
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if not matchobj:
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continue
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(name, value) = matchobj.group(1, 2)
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# Strip trailing comment
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i = value.find('#')
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if i >= 0:
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value = value[:i]
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value = value.strip()
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variables[name] = value
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finally:
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fp.close()
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return variables
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# Parse a Python Setup(.in) file.
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# Return two dictionaries, the first mapping modules to their
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# definitions, the second mapping variable names to their values.
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# May raise IOError.
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setupvardef = re.compile('^([a-zA-Z0-9_]+)=(.*)')
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def getsetupinfo(filename):
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modules = {}
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variables = {}
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fp = open(filename)
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pendingline = ""
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try:
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while 1:
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line = fp.readline()
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if pendingline:
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line = pendingline + line
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pendingline = ""
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if not line:
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break
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# Strip comments
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i = line.find('#')
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if i >= 0:
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line = line[:i]
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if line.endswith('\\\n'):
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pendingline = line[:-2]
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continue
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matchobj = setupvardef.match(line)
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if matchobj:
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(name, value) = matchobj.group(1, 2)
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variables[name] = value.strip()
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else:
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words = line.split()
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if words:
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modules[words[0]] = words[1:]
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finally:
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fp.close()
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return modules, variables
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# Test the above functions.
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def test():
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import sys
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import os
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if not sys.argv[1:]:
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print('usage: python parsesetup.py Makefile*|Setup* ...')
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sys.exit(2)
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for arg in sys.argv[1:]:
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base = os.path.basename(arg)
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if base[:8] == 'Makefile':
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print('Make style parsing:', arg)
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v = getmakevars(arg)
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prdict(v)
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elif base[:5] == 'Setup':
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print('Setup style parsing:', arg)
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m, v = getsetupinfo(arg)
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prdict(m)
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prdict(v)
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else:
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print(arg, 'is neither a Makefile nor a Setup file')
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print('(name must begin with "Makefile" or "Setup")')
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def prdict(d):
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keys = sorted(d.keys())
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for key in keys:
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value = d[key]
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print("%-15s" % key, str(value))
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if __name__ == '__main__':
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test()
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