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parser.py
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parser.py
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# -*- coding: utf-8 -*-
"""
@author: edipdemirbilek
"""
import codecs
import copy
import sys
import os
import re
from bs4 import BeautifulSoup
import urllib3
import requests
def findSubstring(s1, s2):
"""
Finds the longest sequence common between two strings where the common
string is at the end of first string and at the beginning of second
string.
"""
len_s1 = len(s1)
len_s2 = len(s2)
if len_s1 > 1 and len_s2 > 1:
len_min = min(len_s1, len_s2)
for i in range(len_min, 1, -1):
sub_s1 = s1[len(s1)-i:]
sub_s2 = s2[:i]
if sub_s1 == sub_s2:
return i
return 0
def download(show_episode_url):
"""
Download *.vtt subtitle file from the given URL.
"""
print("Downloading Episode HTML File From: " + show_episode_url)
urllib3.PoolManager()
r = requests.get(show_episode_url)
print("Processing HTML File for VTT information.")
soup = BeautifulSoup(r.text, 'html.parser')
lists = soup.find_all('meta')
file_name = re.search('2016.*jpg', str(lists[-1])).group(0)[:-7] + '.vtt'
full_url = "http://static.tou.tv/medias/webvtt/" + file_name
print("Downloading Episode VTT File From: " + full_url)
f = open(file_name, 'wb')
f.write(requests.get(full_url).content)
f.close()
return file_name
def preprocess(vtt_file, pre_file):
"""
Merges multiple lines into single line.
"""
fi = codecs.open(vtt_file, "r", "utf-8")
fo = codecs.open(pre_file, "w", "utf-8")
longLine = ""
print("Merging multiple lines into one line.")
for line in fi:
if len(line) > 1:
longLine += line.rstrip('\n')+" "
else:
longLine.rstrip(' ')
fo.write(longLine)
fo.write("\n")
longLine = ""
fo.close()
fi.close()
def extract_text(pre_file, extract_file):
"""
Remove duplicates in the text.
"""
fi = codecs.open(pre_file, "r", "utf-8")
fo = codecs.open(extract_file, "w", "utf-8")
i = 0
last_line = ""
fi.readline()
print("Removing duplicates in text.")
for line in fi:
new_line = copy.copy(line[30:].rstrip('\n'))
maxStrInd = findSubstring(last_line, new_line)
if maxStrInd > 0:
last_line += copy.copy(new_line[maxStrInd:])
else:
last_line += " "+copy.copy(new_line)
i += 1
fo.write(last_line.replace("- ", "\n- "))
fo.close()
fi.close()
def add_time_stamps(extract_file, pre_file, txt_file, vtt_file):
"""
Adds proper timestamps to the text.
"""
fi_extract = codecs.open(extract_file, "r", "utf-8")
fi_pre = codecs.open(pre_file, "r", "utf-8")
fo = codecs.open(txt_file, "w", "utf-8")
pre_lines = fi_pre.readlines()
index = 0
print("Adding time_stamps.")
for line in fi_extract:
if line[:2] == "- " and len(line) > 3:
token = "- "+line[2:].split()[0]
while index < len(pre_lines):
if pre_lines[index].find(token) != -1:
time_stamp = pre_lines[index][:8]
line = line.replace(token, time_stamp+" "+token)
fo.write(line)
break
index += 1
fo.close()
fi_extract.close()
fi_pre.close()
os.remove(vtt_file) if os.path.exists(extract_file) else None
os.remove(extract_file) if os.path.exists(extract_file) else None
os.remove(pre_file) if os.path.exists(pre_file) else None
print("Done!")
print("Content at: " + txt_file)
def main():
"""
Download, process and writes subtitle info to txt file.
Arguments:
None
Returns:
None
Raises:
None
"""
if len(sys.argv) < 2:
print("Please provide episode URL as argument.")
raise SystemExit
show_episode_url = sys.argv[1]
vtt_file = download(show_episode_url)
pre_file = os.path.splitext(vtt_file)[0] + ".pre"
preprocess(vtt_file, pre_file)
extract_file = os.path.splitext(vtt_file)[0] + ".extract"
extract_text(pre_file, extract_file)
txt_file = os.path.splitext(vtt_file)[0] + ".txt"
add_time_stamps(extract_file, pre_file, txt_file, vtt_file)
if __name__ == '__main__':
main()