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path: root/rdiff-backup/misc/remove-comments.py
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#!/usr/bin/env python

"""remove-comments.py

Given a python program on standard input, spit one out on stdout that
should work the same, but has blank and comment lines removed.

"""

import sys, re

triple_regex = re.compile('"""')

def eattriple(initial_line_stripped):
	"""Keep reading until end of doc string"""
	assert initial_line_stripped.startswith('"""')
	if triple_regex.search(initial_line_stripped[3:]): return
	while 1:
		line = sys.stdin.readline()
		if not line or triple_regex.search(line): break		

while 1:
	line = sys.stdin.readline()
	if not line: break
	stripped = line.strip()
	if not stripped: continue
	if stripped[0] == "#": continue
	if stripped.startswith('"""'):
		eattriple(stripped)
		continue
	sys.stdout.write(line)