Utility script to help find missing or obsolete source files listed in libbrotli's Makefile.am.

libfiles.py

#!/usr/bin/env python2.7
# -*- coding: utf-8 -*-

# Utility script to help find missing or obsolete source files listed in
# libbrotli's Makefile.am.
#
# Usage:
#   $ cd libbrotli
#   $ ./libfiles.py


from glob import glob
from re import findall, MULTILINE, search


def diff_valuelist(varname, fpattern, content):
    reflist = set(glob(fpattern))

    # Extract the list of values for the given variable from the content
    # string.
    m = search(r"{} = ([a-zA-Z0-9/\\_\.\s\t\n-]+)\n".format(varname), content, MULTILINE)
    if m is None:
        print "No values found for", varname
        return

    values = set(findall(r'([a-zA-Z0-9_/\.-]+)[\s\n\\]+', m.group(1), MULTILINE))

    missing = reflist - values
    if len(missing) > 0:
        print "\nMissing values in", varname
        print "\n".join(missing)

    obsolete = values - reflist
    if len(obsolete) > 0:
        print "\nObsolete values in", varname
        print "\n".join(obsolete)


if __name__ == "__main__":
    with open('Makefile.am') as fin:
        content = fin.read()

    diff_valuelist("DECODE", "brotli/dec/*.c", content)
    diff_valuelist("ENCODE", "brotli/enc/*.c*", content)
    diff_valuelist("DECODEHEADERS", 'brotli/dec/*.h', content)
    diff_valuelist("ENCODEHEADERS", 'brotli/enc/*.h', content)
    diff_valuelist("COMMON", 'brotli/common/*.c', content)
    diff_valuelist("COMMONHEADERS", 'brotli/include/brotli/*.h', content)