#!/usr/bin/env python3
"""B9A read-only: print complete DT node blocks (brace-matched) whose header line matches any regex.
usage: dt-extract.py file.dts 'regex' ['regex' ...]"""
import re, sys

lines = open(sys.argv[1]).read().splitlines()
pats = [re.compile(p) for p in sys.argv[2:]]
i = 0
while i < len(lines):
    l = lines[i]
    if l.rstrip().endswith('{') and any(p.search(l) for p in pats):
        depth = 0; j = i
        while True:
            depth += lines[j].count('{') - lines[j].count('}')
            if depth == 0:
                break
            j += 1
        print(f'# {sys.argv[1]}:{i + 1}-{j + 1}')
        print('\n'.join(lines[i:j + 1])); print()
        i = j + 1
    else:
        i += 1