Create a graphviz digraph file from a number of EGL_*.txt files

eglextension-deps.py

#!/usr/bin/env python3

import sys

def main():
    out = {}
    for fn in sys.argv[1:]:
        ext=fn.split('.',1)[0]
        with open(fn) as inp:
            in_deps=False
            for l in map(str.rstrip, inp):
                if len(l) < 1:
                    continue
                elif l.startswith("Dependencies"):
                    in_deps=True
                elif in_deps and not l.startswith(' '):
                    break
                elif not in_deps:
                    continue
                for word in filter(lambda x: x.startswith("EGL_") and x != ext, map(lambda x: x.split('.', 1)[0], l.split(' '))):
                    dep = (ext, word)
                    if not out.get(dep,False):
                        out[dep] = True
    print("digraph {")
    print("\n".join(map(lambda x: "  %s -> %s" % x, out.keys())))
    print("}")

__name__ == '__main__' and main()