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#!/usr/bin/env python
# -*- coding: utf-8 -*-
__all__ = ['DescriptionTree']
from config import Config
conf = Config()
from description import *
from exception import DescriptionTreeException
import os
class DescriptionTree(object):
def __init__(self):
self.pkg_list = {}
self.__db_path = os.path.join(conf.db, 'octave-forge')
if not os.path.isdir(self.__db_path):
raise DescriptionTreeException('Invalid db: %s' % self.__db_path)
for cat in [i.strip() for i in conf.categories.split(',')]:
catdir = os.path.join(self.__db_path, cat)
if os.path.isdir(catdir):
self.pkg_list[cat] = []
pkgs = os.listdir(catdir)
for pkg in pkgs:
mypkg = re_pkg_atom.match(pkg)
if mypkg == None:
raise DescriptionTreeException('Invalid Atom: %s' % mypkg)
if mypkg.group(1) not in conf.blacklist:
self.pkg_list[cat].append({
'name': mypkg.group(1),
'version': mypkg.group(2),
})
def __getitem__(self, key):
mykey = re_pkg_atom.match(key)
if mykey == None:
return None
name = mykey.group(1)
version = mykey.group(2)
for cat in self.pkg_list:
for pkg in self.pkg_list[cat]:
if pkg['name'] == name and pkg['version'] == version:
pkgfile = os.path.join(
self.__db_path,
cat,
'%s-%s' % (pkg['name'], pkg['version']),
'DESCRIPTION'
)
return Description(pkgfile)
return None
def package_versions(self, pkgname):
tmp = []
for cat in self.pkg_list:
for pkg in self.pkg_list[cat]:
if pkg['name'] == pkgname:
tmp.append(pkg['version'])
return tmp
def latest_version(self, pkgname):
tmp = self.package_versions(pkgname)
return self.version_compare(tmp)
def version_compare(self, versions):
max = ('0',)
maxstr = None
for version in versions:
tmp = tuple(version.split('.'))
if tmp > max:
max = tmp
maxstr = version
return maxstr
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