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# Fedora Developer Shell
#
# 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; version 2 of the License.
#
# 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.
#
# Authors: Yaakov M. Nemoy <ynemoy@redhat.com>
#
from re import compile, DOTALL
from urllib import urlopen, urlretrieve
from modules.fetcher import Fetcher
class Hackage(Fetcher):
def latest_version(self, pkg):
'''download information from hackage to find out the latest version of a package
'''
hackage_title = compile(r'<title.*?>HackageDB: (.*)-(.*)</title.*?>', DOTALL)
site = 'http://hackage.haskell.org/cgi-bin/hackage-scripts/package/' + pkg
u = urlopen(site)
page = u.read()
match = hackage_title.search(page)
groups = match.groups()
print groups
if pkg == groups[0]:
return groups[1]
else:
raise ExecutionException("package does not match package name, can't determine version, sorry")
def url(self, pkg, ver):
'''returns the url for tarball for a hackage package'''
return 'http://hackage.haskell.org/packages/archive/' + \
pkg + '/' + ver + '/' + pkg + '-' + ver + '.tar.gz'
def darcs_url(self, pkg):
return 'http://darcs.haskell.org/' + pkg
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