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metadata.py
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metadata.py
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#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# by Erik Osheim
#
# Reads README.md, and writes a README.md.new. If the format of
# README.md changes, this script may need modifications.
#
# Currently it rewrites each section, doing the following:
# 1. alphabetizing
# 2. querying GitHub for stars and days since active
# 3. formatting the link title to show this info
# 4. bolding projects with lots of stars
#
# Once README.md has the stars/days info in the links, the
# repo_regex will need slight modification.
#
# In order to use GH authentication, create a file in this directory
# called .access-token, whose contents are: "$user:$token" where $user
# is your github username, and $token is a Personal Access Token.
import base64
import datetime
import json
import os.path
import random
import re
import shutil
import sys
import urllib2
# we use these regexes when "parsing" README.md
empty_regex = re.compile(r"^ *\n$")
section_regex = re.compile(r"(^## (.+)\n$)|(^### (.+)\n$)")
repo_regex = re.compile(r"^\* (?:\*\*)?\[?([^*★]+[^ ★])(?: ★ ([^ ]+) ⧗ ([^ *]+))?\]\((.+?)\)(?:\*\*)?(?: (?:-|—|–) (.+))?\n$")
end_regex = re.compile(r"^# .+\n$")
github_regex = re.compile(r"^https://github.com/(.+?)/(.+?)(?:/?)$")
# some paths
readme_path = 'README.md'
temp_path = 'README.md.new'
# these will be updated if .access-token exists.
user = None
token = None
# use fake to avoid hitting github API
fake = True
# whether to query all projects, or just those lacking scores/days.
full_update = False
# right now.
now = datetime.datetime.now()
# ask github for the number of stargazers, and days since last
# activity, for the given github project.
def query(owner, name):
if fake:
print ' {0}/{1}: ok'.format(owner, name)
return (random.randint(1, 1000), random.randint(1, 300))
else:
try:
req = urllib2.Request('https://api.github.com/repos/{0}/{1}'.format(owner, name))
if user is not None and token is not None:
b64 = base64.encodestring('{0}:{1}'.format(user, token)).replace('\n', '')
req.add_header("Authorization", "Basic {0}".format(b64))
u = urllib2.urlopen(req)
j = json.load(u)
t = datetime.datetime.strptime(j['updated_at'], "%Y-%m-%dT%H:%M:%SZ")
days = max(int((now - t).days), 0)
print ' {0}/{1}: ok'.format(owner, name)
return (int(j['stargazers_count']), days)
except urllib2.HTTPError, e:
print ' {0}/{1}: FAILED'.format(owner, name)
return (None, None)
def output_repo(outf, name, stars, days, link, rdesc):
popular = stars is not None and int(stars) >= 500
if stars is None and days is None:
title = name
else:
title = '%s ★ %s ⧗ %s' % (name, stars, days)
if popular:
outf.write('* **[{0}]({1})** - {2}\n'.format(title, link, rdesc))
else:
outf.write('* [{0}]({1}) - {2}\n'.format(title, link, rdesc))
def flush_section(outf, section, sdesc, repos):
print ' ' + section.strip()
outf.write(section)
outf.write('\n')
if sdesc:
outf.write(sdesc)
outf.write('\n')
repos.sort(key=lambda t: t[0].lower())
for name, stars, days, link, rdesc in repos:
if not full_update and stars is not None and days is not None:
output_repo(outf, name, stars, days, link, rdesc)
continue
m = github_regex.match(link)
if not m:
print ' {0}: not a repo'.format(link)
output_repo(outf, name, stars, days, link, rdesc)
continue
stars, days = query(m.group(1), m.group(2))
output_repo(outf, name, stars, days, link, rdesc)
outf.write('\n')
def run():
if full_update:
print 'querying for all entries'
else:
print 'querying for new entries only'
if fake:
print 'running in fake mode -- no GH queries will be made'
if os.path.exists('.access-token'):
global user, token
user, token = open('.access-token').read().strip().split(':')
print 'using Personal Access Token {0}:{1}'.format(user, token)
else:
print 'no Personal Access Token found in .access-token'
inf = open(readme_path, 'r')
lines = list(inf)
inf.close()
print 'read {0}'.format(readme_path)
started = False
finished = False
section = None
sdesc = None
repos = []
outf = open(temp_path, 'w')
total_repos = 0
print 'writing {0}'.format(temp_path)
for line in lines:
if finished:
outf.write(line)
elif started:
if end_regex.match(line):
total_repos += len(repos)
flush_section(outf, section, sdesc, repos)
outf.write(line)
finished = True
elif empty_regex.match(line):
continue
elif section_regex.match(line):
total_repos += len(repos)
flush_section(outf, section, sdesc, repos)
section = line
sdesc = None
repos = []
else:
m = repo_regex.match(line)
if m:
name, stars, days, link, rdesc = m.groups()
repos.append((name, stars, days, link, rdesc))
elif sdesc is None:
sdesc = line
else:
raise Exception("cannot parse {0}".format(line))
else:
if section_regex.match(line):
section = line
started = True
else:
outf.write(line)
outf.close()
print 'wrote {0} repos to {1}'.format(total_repos, temp_path)
print 'moving {0} to {1}'.format(temp_path, readme_path)
shutil.move(temp_path, readme_path)
if __name__ == "__main__":
#global fake, full_update
from optparse import OptionParser
parser = OptionParser()
parser.add_option("-f", "--fake", action="store_true", dest="fake",
default=False, help="don't query github, use fake data")
parser.add_option("-u", "--update", action="store_true", dest="update",
default=False, help="update all entries to newest data")
opts, _ = parser.parse_args()
fake = opts.fake
full_update = opts.update
run()