#!/usr/bin/env python3

# REQUIREMENTS:

# pip install feedparser

# This script checks if there is a newer tag than the specified in CURRENT_TAG

# File: ~/.python-tutorial-es

# [email]

# USERNAME = your username

# PASSWORD = your password here

# FROMADDR = from@address.com

# TOADDRS = to@address.com

# $ crontab -e

# @weekly nice -n 19 /home/humitos/.virtualenvs/check-python-tutorial/bin/python /home/humitos/src/check_python_tutorial.py --email

import os

import sys

import smtplib

import feedparser

import configparser

import subprocess

from email.mime.text import MIMEText

TAGS_URL = 'http://hg.python.org/cpython/tags'

CURRENT_TAG = 'v3.5.0'

ATOM_URL = 'http://hg.python.org/cpython/atom-tags'

rss = feedparser.parse(ATOM_URL)

tags = rss['entries'][:5]

def download_uncompress_create_diff(bz2_url, rev):

c = 'wget --content-disposition -c {}'.format(bz2_url + '/Doc/tutorial/')

output = subprocess.check_output(c, shell=True)

c = 'tar xvf cpython-{}.tar.bz2 -C /tmp --wildcards --no-anchored \'Doc/tutorial/*.rst\''.format(rev)

output = subprocess.check_output(c, shell=True)

c = 'mv /tmp/cpython-{}/Doc/tutorial/*.rst ~/src/tutorial/original'.format(rev)

output = subprocess.check_output(c, shell=True)

c = 'cd ~/src/tutorial && git diff'

output = subprocess.check_output(c, shell=True)

c = 'cd ~/src/tutorial && git reset --hard origin/master'

subprocess.check_output(c, shell=True)

return output.decode('utf-8')

def send_mail(tag, bz2_url, rev):

# Send an email to my account

conf = configparser.ConfigParser()

try:

conf.read(os.path.expanduser('~/.python-tutorial-es'))

except IOError:

print('You need a config file in ~/.python-tutorial-es')

text = \

'''Please go to {} to check it out.

wget -c {}

tar xvf {}.tar.bz2 -C /tmp --wildcards --no-anchored 'Doc/tutorial/*.rst'

mv /tmp/cpython-{}/Doc/tutorial/*.rst ~/Source/tutorial/original

cd ~/Source/tutorial

git diff

------------------

{}

'''.format(TAGS_URL, bz2_url, rev, rev,

download_uncompress_create_diff(bz2_url, rev))

msg = MIMEText(text)

msg['From'] = conf.get('email', 'FROMADDR')

msg['To'] = conf.get('email', 'TOADDRS')

subject = '[Python HG] There is a new tag: {tag}'.format(tag=tag)

msg['Subject'] = subject

# Credentials

username = conf.get('email', 'USERNAME')

password = conf.get('email', 'PASSWORD')

# The actual mail send

server = smtplib.SMTP('smtp.gmail.com:587')

server.starttls()

server.login(username, password)

server.send_message(msg)

server.quit()

def new_version_found(py_version, bz2_url, rev):

print('A new tag of Python is available "{}" at {}' \

.format(py_version, bz2_url))

if '--email' in sys.argv:

send_mail(py_version, bz2_url, rev)

if __name__ == '__main__':

for tag in tags:

py_version = tag.title

bz2_url = tag.link.replace('/rev/', '/archive/') + '.tar.bz2'

rev = bz2_url.split('/')[-1].split('.')[0]

major, minor, rest = py_version.split('.')

if major != 'v3':

continue

current_major, current_minor, current_rest = CURRENT_TAG.split('.')

if int(minor) > int(current_minor):

new_version_found(py_version, bz2_url, rev)

elif int(minor) == int(current_minor):

# Options: a, b, rc1, rc2. We can just simply compare the

# strings and we will know which version is previous to

# the other one.

if rest != current_rest \

and rest[0] != current_rest[0] \

and rest[1:] > current_rest[1:]:

new_version_found(py_version, bz2_url, rev)