#!/bin/env python3

import re
import sys

with open(sys.argv[1], 'r') as f:
    text = f.read()
    result = ''
    prev = 0
    count = 1
    for match in re.finditer(r"(\[[^]]*\]\s*\(\s*#fn(\d+)\s*\)\s*\[\s*\^(\d+)\s*\])", text):
        result += text[prev:match.start(2)] + str(count) + text[match.end(2):match.start(3)] + str(count)
        prev = match.end(3)
        count += 1

    count = 1
    end_doc_start = prev
    for match in re.finditer(r"^\[\s*\^(\d+)\s*\]:", text[end_doc_start:], re.MULTILINE):
        result += text[prev:match.start(1)+end_doc_start] + str(count)
        prev = match.end(1)+end_doc_start
        count += 1

    result += text[prev:]
    print(result, end='')