Convert DJVU outline to PDF metadata

bmarks.py

#!/usr/bin/env python3

import sys
import sexpdata


def walk_bmarks(bmarks, level):
    output = ''
    wroteTitle = False
    for j in bmarks:
        if isinstance(j, list):
            output = output + walk_bmarks(j, level + 1)
        elif isinstance(j, str):
            if not wroteTitle:
                output = output + \
                    "BookmarkBegin\nBookmarkTitle: %s\nBookmarkLevel: %d\n" % (j, level)
                wroteTitle = True
            else:
                output = output + "BookmarkPageNumber: %s\n" % j.split('#')[1]
                wroteTitle = False
        else:
            pass
    return output

if __name__ == "__main__":
    if len(sys.argv) == 1:
        print("No input file.")
        exit()
    filename = sys.argv[1]
    print(walk_bmarks(sexpdata.load(open(filename)), 0))