Tryag File Manager

//usr/bin/repo-rss

#!/usr/bin/python

# 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 Library 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.
# seth vidal 2005 (c) etc etc

import yum
import yum.Errors
from yum.misc import getCacheDir
from yum.comps import Comps, CompsException
from yum.Errors import RepoMDError
import sys
import os
import libxml2
import time
from optparse import OptionParser

class YumQuiet(yum.YumBase):
    def __init__(self):
        yum.YumBase.__init__(self)
    
    def getRecent(self, days=1):
        """return most recent packages from sack"""

recent = []
        now = time.time()
        recentlimit = now-(days*86400)
        ftimehash = {}
        if self.conf.showdupesfromrepos:
            avail = self.pkgSack.returnPackages()
        else:
            avail = self.pkgSack.returnNewestByNameArch()
        
        for po in avail:
            ftime = int(po.returnSimple('filetime'))
            if ftime > recentlimit:
                if not ftimehash.has_key(ftime):
                    ftimehash[ftime] = [po]
                else:
                    ftimehash[ftime].append(po)

for sometime in ftimehash.keys():
            for po in ftimehash[sometime]:
                recent.append(po)
        
        return recent

class RepoRSS:
    def __init__(self, fn='repo-rss.xml'):
        self.description = 'Repository RSS'
        self.link = 'http://linux.duke.edu/projects/yum'
        self.title = 'Recent Packages'
        self.doFile(fn)
        self.doDoc()
        
    def doFile(self, fn):
        if fn[0] != '/':
            cwd = os.getcwd()
            self.fn = os.path.join(cwd, fn)
        else:
            self.fn = fn
        try:
            self.fo = open(self.fn, 'w')
        except IOError, e:
            print >> sys.stderr, "Error opening file %s: %s" % (self.fn, e)
            sys.exit(1)

def doDoc(self):
        """sets up our doc and rssnode attribute initially, rssnode will be
           redfined as we move along"""
        self.doc = libxml2.newDoc('1.0')
        self.xmlescape = self.doc.encodeEntitiesReentrant
        rss = self.doc.newChild(None, 'rss', None)
        rss.setProp('version', '2.0')
        self.rssnode = rss.newChild(None, 'channel', None)

def startRSS(self):
 """return string representation of rss preamble"""
 
 rfc822_format = "%a, %d %b %Y %X GMT"
 now = time.strftime(rfc822_format, time.gmtime())
 rssheader = """<?xml version="1.0" encoding="utf-8"?>
 <rss version="2.0">
 <channel>
 <title>%s</title>
 <link>%s</link>
 <description>%s</description>
 <pubDate>%s</pubDate>
 <generator>Yum</generator>
 """ % (self.title, self.link, self.description, now)
 
 self.fo.write(rssheader)
 
 
 def doPkg(self, pkg, url):
 item = self.rsspkg(pkg, url)
 self.fo.write(item.serialize("utf-8", 1))
 item.unlinkNode()
 item.freeNode()
 del item
 
 
 def rsspkg(self, pkg, url):
 """takes a pkg object and repourl for the pkg object"""
 
 rfc822_format = "%a, %d %b %Y %X GMT"
 clog_format = "%a, %d %b %Y GMT"
 xhtml_ns = "http://www.w3.org/1999/xhtml"
 escape = self.xmlescape
 
 item = self.rssnode.newChild(None, 'item', None)
 title = escape(str(pkg))
 item.newChild(None, 'title', title)
 date = time.gmtime(float(pkg.returnSimple('buildtime')))
 item.newChild(None, 'pubDate', time.strftime(rfc822_format, date))
 item.newChild(None, 'guid', pkg.returnSimple('id')).setProp("isPermaLink", "false") 
 link = url + '/' + pkg.returnSimple('relativepath')
 item.newChild(None, 'link', escape(link))
 
 # build up changelog
 changelog = ''
 cnt = 0
 if (pkg.changelog != None):
 where = pkg.changelog
 else:
 where = pkg.returnChangelog()
 for e in where:
 cnt += 1
 if cnt > 3: 
 changelog += '...'
 break
 (date, author, desc) = e
 date = time.strftime(clog_format, time.gmtime(float(date)))
 changelog += '%s - %s\n%s\n\n' % (date, author, desc)
 description = '%s - %s\n\n' % (escape(pkg.name), 
 escape(pkg.returnSimple('summary')))
 description += '%s\n\nChange Log:\n\n' % escape(pkg.returnSimple('description').encode('utf-8').replace("\n", " \n"))
 description += escape('<pre>%s</pre>' % escape(changelog.encode('utf-8')))
 item.newChild(None, 'description', description)
 
 return item

def closeRSS(self):
 """end the rss output"""
 
 end="\n </channel>\n</rss>\n"
 self.fo.write(end)
 self.fo.close()
 del self.fo
 self.doc.freeDoc()
 del self.doc
 
 
def makeFeed(filename, title, link, description, recent, my):
 rssobj = RepoRSS(fn=filename)
 rssobj.title = title
 rssobj.link = link
 rssobj.description = description
 rssobj.startRSS()
 # take recent updates only and dump to an rss compat output
 if len(recent) > 0:
 for pkg in recent:
 repo = my.repos.getRepo(pkg.repoid)
 url = repo.urls[0]
 rssobj.doPkg(pkg, url)
 rssobj.closeRSS()

def main(options, args):
    days = options.days
    repoids = args
    my = YumQuiet()
    if options.config:
        my.doConfigSetup(init_plugins=False, fn=options.config)
    else:
        my.doConfigSetup(init_plugins=False)

if os.geteuid() != 0 or options.tempcache:
        cachedir = getCacheDir()
        if cachedir is None:
            print "Error: Could not make cachedir, exiting"
            sys.exit(50)
        my.repos.setCacheDir(cachedir)

if len(repoids) > 0:
        for repo in my.repos.repos.values():
            if repo.id not in repoids:
                repo.disable()
            else:
                repo.enable()

try:
        my._getRepos()
    except yum.Errors.RepoError, e:
        print >> sys.stderr, '%s' % e
        print 'Cannot continue'
        sys.exit(1)
    print 'Reading in repository metadata - please wait....'
    if len(options.arches):
        my._getSacks(archlist=options.arches)
    else:
        my._getSacks()

for repo in my.repos.listEnabled():
            
        try:
            my.repos.populateSack(which=[repo.id], mdtype='otherdata')
        except yum.Errors.RepoError, e:
            print >> sys.stderr, 'otherdata not available for repo: %s' % repo
            print >> sys.stderr, 'run as root to get changelog data'
            sys.exit(1)
    
    recent = my.getRecent(days=days)
    if options.groups:
        comps = Comps()
        for repo in my.repos.listEnabled():
            try: 
                groupsfn = repo.getGroups()
            except RepoMDError: # no comps.xml file
                groupsfn = None
            if not groupsfn:
                continue
            try:
                comps.add(groupsfn)
            except (AttributeError, CompsException):
                print 'Error parsing comps file %s !' % groupsfn
                print 'Multiple feed generation impossible.'
                sys.exit(1)
        for group in comps.groups:
            grouppkgs = group.optional_packages.keys() + group.default_packages.keys() + group.conditional_packages.keys()
            title = "%s - %s" % (options.title, group.name)
            description = "%s. %s" % (options.description, group.name)
            filename = "%s.xml" % group.groupid
            packages = [ pkg for pkg in recent if pkg.name in grouppkgs ]
            makeFeed(filename, title, options.link, description, packages, my)
    # Always make a full feed
    makeFeed(options.filename, options.title, options.link, options.description, recent, my)

if __name__ == "__main__":
    usage = "usage: repo-rss.py [options] repoid1 repoid2"
    
    parser = OptionParser(usage=usage)
    parser.add_option("-f", action="store", type="string", dest="filename",
                      default='repo-rss.xml', help="filename to write rss to: %default")
    parser.add_option("-l", action="store", type='string', dest='link',
                      default='http://linux.duke.edu/projects/yum/',
                      help="url for rss feed link: %default")
    parser.add_option("-t", action='store', type='string', dest='title',
                      default="RSS Repository - Recent Packages",
                      help='Title for Rss feed: %default')
    parser.add_option("-d", action='store', type='string', dest='description',
                      default="Most recent packages in Repositories",
                      help='description of feed: %default')
    parser.add_option('-r', action='store', type='int', dest='days', default=3,
                      help='most recent (in days): %default')
    parser.add_option("--tempcache", default=False, action="store_true",
                      help="Use a temp dir for storing/accessing yum-cache")
    parser.add_option("-g", action='store_true', dest='groups', default=False,
                      help="Generate one feed per package group")
    parser.add_option("-a", action='append', dest='arches', default=[],
                      help="arches to use - can be listed more than once")
    parser.add_option("-c", action='store', dest='config', default=None,
                      help="config file")
    (options, args) = parser.parse_args()

main(options, args)