chapterstretch.py

#!/usr/bin/python3

from sys import argv as Args
import datetime


def main():
	filename = Args[3]
	for i, arg in enumerate(Args):
		if '/' in arg:
			try:
				Args[i] = div_arg(arg.split('/')[0], arg.split('/')[1])
			except:
				pass
	n = divide(Args[1], Args[2])
	data = get_data_from_file(filename)
	final = moka(data, n)
	[print(f) for f in final]



def divide(fromx, tox):
	return float(fromx) / float(tox)


def div_arg(arg1, arg2):
	return int(arg1) / int(arg2)


def get_data_from_file(filename):
	try:
		with open(filename, 'r') as file:
			return [x.strip('\n') for x in file.readlines()]
	except:
		print('No such file')


def moka(data, n):
	for i, dataline in enumerate(data):
		data[i] = multiply_time(dataline, n)
	return data


def multiply_time(dataline, n):
	if 'NAME' in dataline: return dataline
	splitted = dataline.split('=')
	splitted[1] = str(convert_time(splitted[1], n))
	return '='.join(splitted)


def get_millisecs(t):
	hms = t.split(':')
	millisecs = 0
	for i, x in enumerate(hms):
		if i == 0:
			millisecs += int(x) * 3600000
		elif i == 1:
			millisecs += int(x) * 60000
		elif i == 2:
			millisecs += int(x.split('.')[0]) * 1000
			millisecs += int(x.split('.')[1])
	return millisecs


def convert_back(final_ms):
	hours = int(final_ms/3600000)
	minutes = int((final_ms - (hours * 3600000))/60000)
	seconds = (final_ms - (hours * 3600000) - (minutes * 60000))/1000
	return hours, minutes, seconds


def convert_time_back(hours, minutes, seconds):
	time = ''
	if len(str(hours)) != 2:
		time += f'0{hours}:'
	else:
		time += f'{hours}:'
	if len(str(minutes)) != 2:
		time += f'0{minutes}:'
	else:
		time += f'{minutes}:'
	secs = str(seconds).split('.')[0]
	if len(str(seconds).split('.')[0]) != 2:
		time += f'0{secs}.'
	else:
		time += f'{secs}.'
	time += str(seconds).split('.')[1].ljust(3, '0')
	return time
	

def convert_time(t, n):
	millisecs = get_millisecs(t)
	final_ms = millisecs * n
	hours, minutes, seconds = convert_back(int(final_ms))
	readable_time = convert_time_back(hours, minutes, seconds)
	return readable_time
	

if __name__ == '__main__':
	main()