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#!/usr/bin/python3 -u
# vim: set fileencoding=utf-8 :
#
# (C) 2008,2015,2022 Guido Guenther <agx@sigxcpu.org>
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
"""Link Debian changelog entries to the VCS"""
from builtins import str
import cgi
import os
import re
import sys
import requests
from lxml import etree
from genshi.template import TemplateLoader
import vcsbrowsers
from htmlchangelog import HTMLChangelog
from io import BytesIO
VERSION="0.0.5"
XMLNS='http://www.w3.org/1999/xhtml'
PTS='http://packages.qa.debian.org'
PKGNAMERE="[a-zA-Z0-9.+\-]+$"
TITLE = "cl2vcs %s" % VERSION
def fetch_changelog(cl_url):
resp = requests.get(cl_url, timeout=5.0)
resp.raise_for_status()
return resp.content
def fetch_pts_page(package):
pts = None
url = "%s/%s" % (PTS, package)
resp = requests.get(url, timeout=5.0)
if resp.status_code == 404:
raise Exception("Can't find package '%s' on '%s'" % (package, PTS))
resp.raise_for_status()
return resp.content
def parse_pts_xhtml(pts):
cl_url = None
vcs_url = None
vcs = None
tree = etree.parse(BytesIO(pts))
searcher = etree.ETXPath('/{%s}html/{%s}body//{%s}a[@href]' % (XMLNS, XMLNS, XMLNS))
result = searcher(tree)
for r in result:
if not r.text:
continue
if r.text.lower() == "changelog":
cl_url = r.attrib['href']
elif r.text.lower() == "browse":
vcs_url = r.attrib['href']
parent = r.getparent()
vcs = parent.getchildren()[0].text.lower()
return cl_url, vcs_url, vcs
def get_vcsbrowser(vcs, vcs_url):
if vcs == "git":
return vcsbrowsers.guess_git_repo(vcs_url)
elif vcs == "Mercurial":
return vcsbrowsers.HgBrowser(vcs_url)
def render_search_page(title, pkg=None, err=None):
loader = TemplateLoader('templates')
tmpl = loader.load('index.html', encoding='utf-8')
t = tmpl.generate(title=title, pkg=pkg, err=err)
print(t.render('xhtml', doctype='xhtml-strict'))
def render_changelog_page(cl):
print(cl)
def handle_pkg(pkg, title):
if pkg:
if not re.match(PKGNAMERE, pkg):
return render_search_page(title=title, err=u"Invalid package name: '%s'" % pkg)
else:
pkg = str(pkg)
else:
return render_search_page(title=title, err="")
try:
pts = fetch_pts_page(pkg)
except Exception as exc_err:
err = exc_err
pts = None
if not pts:
return render_search_page(title=title, pkg=pkg, err=err)
cl_url, vcs_url, vcs = parse_pts_xhtml(pts)
if cl_url == None:
return render_search_page(title=title, pkg=pkg,
err="Cannot parse changelog from PTS page.")
try:
cl_text = fetch_changelog(cl_url)
except urlgrabber.grabber.URLGrabError as e:
(errcode, errmsg) = e.args
return render_search_page(title=title,
err="Cannot fetch '%s': %s" % (cl_url, errmsg))
if vcs and vcs_url:
vcsbrowser = get_vcsbrowser(vcs, vcs_url)
else:
vcsbrowser = None
cl = HTMLChangelog(cl_text, vcsbrowser=vcsbrowser)
if cl:
render_changelog_page(cl)
def main(argv):
err = ""
print("Content-Type: text/html; charset=utf-8")
print()
try:
form = cgi.FieldStorage()
if 'pkg' in form:
pkg = form.getfirst('pkg').strip()
else:
pkg = None
handle_pkg(pkg, TITLE)
except Exception as err:
import traceback
traceback.print_exc(file=sys.stderr)
render_search_page(title=TITLE, err="Unknown error")
return 0
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