Python based converter for 'Export Chrome History' chrome extension json output to be importable by 'History Trends Unlimited' chrome extension.

chrome_history_data_converter.py

from datetime import datetime
import json
"""An converter for 
['Export Chrome History'](https://chrome.google.com/webstore/detail/dihloblpkeiddiaojbagoecedbfpifdj) 
chrome extension json output to be importable by 
['History Trends Unlimited'](https://chrome.google.com/webstore/detail/pnmchffiealhkdloeffcdnbgdnedheme) chrome extension."""

"""
Name 			Description					Example
URL				The visited URL				http://scores.sports.example.com/team?id=123456
Host*			The hostname of the URL		scores.sports.example.com
Domain*			The domain of the URL 		example.com
				according to 
				publicsuffix.org
Visit Time (ms)	The visit time, in 			1384634958041.754
				milliseconds since 
				01 January, 1970
Visit Time 		The visit time as a string, 2013-11-16 14:49:18.041
(string)		in local time, with
				the following format:
				YYYY-MM-DD HH24:MI:SS.FFF
				
Day of Week		The day of the week for 	6
				the visit time. Values 
				are 0-6.
				Sunday=0, Monday=1, etc.
Transition 		How the browser navigated 	link
Type			to the URL 
 				(as defined here)
Page Title*		The title of the visited	Life, the Universe, and Everything
				URL
"""


def entry_parser(entry):
	visit_tm = datetime.fromtimestamp(entry['visitTime']/1000)
	data = [entry['url'], '', '', 
	visit_tm.timestamp()*1000, visit_tm.strftime("%F %H:%M:%S.%f"),
	visit_tm.weekday(),
	entry['transition'],entry['title']]
	return data


def main():
	import argparse
	parser = argparse.ArgumentParser(__name__, description='Convert json based chrome history to csv based with a bit of modification')
	parser.add_argument('source', help='Source file')
	parser.add_argument('-o', dest='dest', default='', help='destination file')
	args = parser.parse_args()

	if not len(args.dest):
		args.dest = '.'.join(args.source.split('.')[:-1])+'.tsv'

	with open(args.source, 'r', encoding='utf-8') as f:
		data = json.load(f)

	with open(args.dest, 'w', encoding='utf-8') as f:
		lines = ['\t'.join([str(d) for d in entry_parser(entry)]) for entry in data]
		f.write('\n'.join(lines))

if __name__ == '__main__':
	main()