Process multiple google chrome debugger tools code coverage jsons in ordet to extract effective source

code_coverage.py

import json
import re

# code_coverage_filename =

# Will merge all this files
code_coverage_filenames = ['Coverage-20210613T181747.json', 'Coverage-20210613T1817427.json']

specific_file_url = 'https://localhost/bootstrap.min.self.css?body=1'

p = re.compile("@media(.)*?{")

ranges = []
source_text = None
medias_start_stop = None
for code_coverage_filename in code_coverage_filenames:
	with open(code_coverage_filename) as f:
	  data = json.load(f)
	
	for entry in data:
		pass  # print entry['url']
		if entry['url'] == specific_file_url:
			ranges.extend(entry['ranges'])
			
			if source_text is not None and entry['text'] != source_text:
				print 'Warning! source texts of files are not the same!'
				exit(1)
			source_text = entry['text']
			
			ranges_to_take = []
			
			medias_start_stop = []
			for m in p.finditer(source_text):
				# print(m.start(), m.group())
				start = m.start()
				header_length = len(m.group())
				pointer = start + header_length
				count_open_braces = 0
				while True:
					pointer += 1
					char = source_text[pointer]
					if char == "{":
						count_open_braces += 1
					elif char == "}":
						count_open_braces -= 1
					if count_open_braces < 0:
						pointer += 1
						break
				medias_start_stop.append((start, pointer))
			# print source_text[start:pointer]
			
			print medias_start_stop


for range in ranges:
	range_start = range['start']
	range_end   = range['end']
	
	# if we are in the middle of a media query, take it all
	inside = None
	for media_start, media_end in medias_start_stop:
		if source_text[range_start:range_end].startswith(".container"):
			justdebug = 1
		if range_start>=media_start and range_end<=media_end:
			inside = (media_start, media_end)
			break
	if inside is not None:
		if inside not in ranges_to_take:
			ranges_to_take.append(inside)
		else:
			pass  # already taken before
	else:
		#text += entry['text'][int(range_start):int(range_end)]+"\n"
		ranges_to_take.append((range_start, range_end))

text = ""
for start, stop in ranges_to_take:
	text += source_text[int(start):int(stop)]+"\n"
print text