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path: root/gen-patch-info.py
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#!/usr/bin/python

import os
import errno
import string
import tempfile
from fnmatch import fnmatch
from gzip import GzipFile
from debian_bundle import deb822
from Cheetah.Template import Template
from Cheetah.Compiler import Compiler

class Conf:
  archive_root = '/scratch/debian-archive/debian'
  archive_root_url = 'ftp://ftp.se.debian.org/debian'
  output_dir = '/scratch/patches'
  template_dir  = './templates'
  static_dir  = './static'
  root_url = 'http://people.debian.org/~seanius/pts/patches'

class Archive:
  root = None
  distsdir = None

  def __init__(self, dir):
    self.root = dir
    self.distsdir = os.sep.join([dir, "dists"])

  def suites(self):
    for s in os.listdir(self.distsdir):
      yield s

  def components(self, suite):
    f = file(self.distsdir + os.sep + os.sep.join([suite, "Release"]))
    rel = deb822.Release(f)
    for comp in rel['Components'].split(' '):
      yield comp

  def sourcepackages(self, suite, component):
    sfile=os.sep.join([self.distsdir,suite,component,"/source/Sources.gz"])
    for ent in deb822.Sources.iter_paragraphs(GzipFile(sfile)):
      yield SourcePackage(ent)

  def __str__(self):
    return "Archive rooted at "+self.root

class PageWriter:
  def __init__(self, filename, template):
    try:
      os.makedirs(os.path.dirname(filename))
    except OSError, e:
      if e.errno != errno.EEXIST:
        raise e
    o = file(filename, "w")
    o.write(str(template))
    o.close()

class SourcePackage:
  name = None
  format = None
  diffgz = None
  loc = None
  type = "Native"
  version = None
  seriespatches = {}
  directpatches = []
  # todo
  vcs = {}

  def __init__(self, info):
    self.name = info['Package']  
    self.format = info['Format']  
    self.loc = info['Directory']  
    self.version = info['Version']  

    for f in info['Files']:
      if fnmatch(f['name'], '*.diff.gz'):
        self.diffgz=f
        self.type = "Debian-diff"

    if self.diffgz != None:
      self.debianonlydiff = "_".join([self.name, self.version, "debianonly.diff"])
      self.nondebiandiff = "_".join([self.name, self.version, "nondebian.diff"])

  def idx(self):
    name = str(self)
    if len(name) < 4 or name[0:3] != "lib":
      return name[0]
    else:
      return name[0:4]

  ## XXX okay, all of this could be made quite a bit cleaner
  def diff_series(self, outdir):
    if self.diffgz:
      debdiff = os.sep.join([outdir, self.debianonlydiff])
      seriesdir = os.sep.join([outdir, "series"])
      try:
        os.mkdir(os.sep.join([outdir,"series"]))
      except OSError, e:
        if e.errno != errno.EEXIST:
          raise e
      os.system("filterdiff -p 1 -i 'debian/patches/*' "+debdiff+"| ( cd "+
                seriesdir+"; patch -s )")
      for (blah,blahblah,files) in os.walk(seriesdir):
        try:
          files.remove('series')
          files.remove('00list')
        except:
          pass
        for f in files:
          p = os.sep.join([seriesdir, f])
          # get the info for summary generation
          fd = os.popen("diffstat "+p)
          self.seriespatches[f] = fd.read()
          fd.close()
          os.system("source-highlight -s diff -f xhtml -i "+p+" -o "+p+".html")
          
  def diff_debiandir(self, outdir):
    try:
      src = os.sep.join([Conf.archive_root, self.loc, self.diffgz['name']])
      dst = os.sep.join([outdir, self.debianonlydiff])
      os.system("filterdiff -z -p 1 -i 'debian/*' "+src+" > "+dst)
      os.system("source-highlight -s diff -f xhtml -i "+dst+" -o "+dst+".html")
    # in the case of native packages there is no diffgz
    except TypeError:
      pass

  def diff_nondebiandir(self, outdir):
    try:
      src = os.sep.join([Conf.archive_root, self.loc, self.diffgz['name']])
      dst = os.sep.join([outdir, self.nondebiandiff])
      os.system("filterdiff -z -p 1 -x 'debian/*' "+src+" > "+dst)
      os.system("source-highlight -s diff -f xhtml -i "+dst+" -o "+dst+".html")
    # in the case of native packages there is no diffgz
    except TypeError:
      pass

  def __str__(self):
    return self.name

class OurTemplate(Template):
  def __init__(self, file):
    Template.__init__(self, file=file, searchList={"conf":Conf})

class PackageVersTemplate(OurTemplate):
  src = None
  suite = None

  def __init__(self, srcpkg, suite):
    self.src = srcpkg
    self.suite = suite
    tpl=os.sep.join([Conf.template_dir, "package_vers.tmpl"])
    OurTemplate.__init__(self, file=tpl)

class PackageVersWriter(PageWriter):
  def __init__(self, template):
    dstdir = os.sep.join([Conf.output_dir, "packages", template.src.name, template.src.version])
    try:
      os.makedirs(dstdir)
    except OSError, e:
      if e.errno != errno.EEXIST:
        raise e
    template.src.diff_debiandir(dstdir)
    template.src.diff_nondebiandir(dstdir)
    template.src.diff_series(dstdir)
    dst = os.sep.join([dstdir, "index.html"])
    PageWriter.__init__(self, dst, template)

class SourcePackageIndex:
  pkgs = {}

  def ins(self, srcpkg, rel):
    idx = srcpkg.idx()
    if not self.pkgs.has_key(idx):
      self.pkgs[idx] = {}
    if not self.pkgs[idx].has_key(srcpkg.name):
      self.pkgs[idx][srcpkg.name] = {}
    if not self.pkgs[idx][srcpkg.name].has_key(rel):
      self.pkgs[idx][srcpkg.name][rel] = srcpkg

  def indices(self):
    for k,v in self.pkgs.iteritems():
      yield (k,v)

class FrontPageTemplate(OurTemplate):
  allindex = None
  relindices = []

  def __init__(self, allindex, release_indices=[]):
    tpl = os.sep.join([Conf.template_dir, "frontpage.tmpl"])
    OurTemplate.__init__(self, file=tpl)
    self.allindex = allindex
    self.relindices = release_indices

class FrontPageWriter(PageWriter):
  def __init__(self, template):
    dest = os.sep.join([Conf.output_dir, "index.html"])
    PageWriter.__init__(self, dest, template)

class LetterTocTemplate(OurTemplate):
  idx = None
  pkgs = None
  dists = None

  def releases(self):
    return dists

  def __init__(self, letter, collection):
    self.pkgs = collection
    self.idx = letter
    self.dists = {}
    for name,packagelist in collection.iteritems():
      for d in packagelist.iterkeys():
        self.dists[d] = True
    tpl = os.sep.join([Conf.template_dir, "letter_toc.tmpl"])
    OurTemplate.__init__(self, file=tpl)

class LetterTocWriter(PageWriter):

  def __init__(self, template):
    dest = os.sep.join([Conf.output_dir, "index", template.idx, "index.html"])
    PageWriter.__init__(self, dest, template)

if __name__ == '__main__':
  os.system("cheetah compile templates/skeleton")
  a = Archive(Conf.archive_root)

  # just for now until development stablizes
  os.system("rm -rf "+Conf.output_dir)
  os.mkdir(Conf.output_dir)

  print a
  master_index = SourcePackageIndex()
  for s in a.suites():
    print "suite: ",s
    for c in a.components(s):
      print "\tcomponent:",c
      for p in a.sourcepackages(s, c):
        print "\t\tpackage:",p
        PackageVersWriter(PackageVersTemplate(p, s))
        master_index.ins(p,s)

  os.system("cp -a "+Conf.static_dir+"/* "+Conf.output_dir)
  FrontPageWriter(FrontPageTemplate(master_index))
  for letter,stuff in master_index.indices():
    LetterTocWriter(LetterTocTemplate(letter,stuff))