import json import urllib.request, urllib.error, urllib.parse import re import portage from euscan import helpers, output, mangling HANDLER_NAME = "github" CONFIDENCE = 100 PRIORITY = 90 def can_handle(pkg, url=None): return url and url.startswith('mirror://github/') def guess_package(cp, url): match = re.search('^mirror://github/(.*?)/(.*?)/(.*)$', url) assert(match) return (match.group(1), match.group(2), match.group(3)) def scan_url(pkg, url, options): 'http://developer.github.com/v3/repos/downloads/' user, project, filename = guess_package(pkg.cpv, url) # find out where version is expected to be found cp, ver, rev = portage.pkgsplit(pkg.cpv) if ver not in filename: return # now create a filename-matching regexp # XXX: supposedly replace first with (?P...) # and remaining ones with (?P=foo) fnre = re.compile('^%s$' % \ re.escape(filename).replace(re.escape(ver), '(.*?)')) output.einfo("Using github API for: project=%s user=%s filename=%s" % \ (project, user, filename)) dlreq = urllib.request.urlopen('https://api.github.com/repos/%s/%s/downloads' % \ (user, project)) dls = json.load(dlreq) ret = [] for dl in dls: m = fnre.match(dl['name']) if m: pv = mangling.mangle_version(m.group(1), options) if helpers.version_filtered(cp, ver, pv): continue url = mangling.mangle_url(dl['html_url'], options) ret.append((url, pv, HANDLER_NAME, CONFIDENCE)) return ret