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#!/usr/bin/env python
# -*- coding: utf-8 -*-
__all__ = [
'Description',
'DescriptionException',
're_depends',
're_atom',
're_pkg_atom'
]
from config import Config
conf = Config()
import re, os
# octave-forge DESCRIPTION's dependencies atoms
re_depends = re.compile(r'([a-zA-Z]+) *(\( *([><=]?=?) *([0-9.]+) *\))?')
# gentoo-like atoms, to use with emerge/whatever package manager
re_atom = re.compile(r'^([><]?=?)([a-zA-Z\-/]+)(-(.*))?$')
# we'll use atoms like 'control-1.0.11' to g-octave packages
re_pkg_atom = re.compile(r'^(.+)-([0-9.]+)$')
class DescriptionException(Exception):
pass
class Description(object):
def __init__(self, file):
if not os.path.exists(file):
raise DescriptionException('File not found: %s' % file)
fp = open(file)
myfile = fp.readlines()
fp.close()
kw = ''
self.__desc = {}
for i in myfile:
line = i.split(':')
if len(line) < 2:
if i[0].isspace() and kw != '':
self.__desc[kw] += ' ' + i.strip()
else:
kw = line[0].strip().lower()
value = ':'.join(line[1:]).strip()
if self.__desc.has_key(kw):
if kw == 'depends' or kw == 'systemrequirements' or kw == 'buildrequires':
self.__desc[kw] += ', ' + value
else:
self.__desc[kw] += ' ' + value
else:
self.__desc[kw] = value
self_depends = []
for i in self.__desc:
if i == 'depends':
depends = self.__desc[i]
self.__desc[i] = self.__depends(depends)
self_depends = self.__self_depends(depends)
if i == 'systemrequirements' or i == 'buildrequires':
self.__desc[i] = self.__requirements(self.__desc[i])
self.__desc['self_depends'] = self_depends
def __depends(self, long_atom):
tmp = []
for atom in long_atom.split(','):
r = re_depends.match(atom.strip())
if r != None:
myatom = ''
if r.group(3) != None:
myatom += str(r.group(3)) == '==' and '=' or str(r.group(3))
if r.group(1).lower() == 'octave':
myatom += 'sci-mathematics/octave'
else:
myatom += 'g-octave/%s' % r.group(1)
if r.group(4) != None:
myatom += '-%s' % r.group(4)
tmp.append(myatom)
return tmp
def __self_depends(self, long_atom):
tmp = []
for atom in long_atom.split(','):
r = re_depends.match(atom.strip())
if r != None:
if r.group(1).lower() != 'octave':
tmp.append((r.group(1), r.group(3), r.group(4)))
return tmp
def __requirements(self, long_atom):
tmp = []
for atom in long_atom.split(','):
atom = atom.strip()
if conf.dependencies.has_key(atom):
dep = conf.dependencies[atom]
if dep != '':
tmp.append(dep)
return tmp
def __getattr__(self, name):
if self.__desc.has_key(name):
return self.__desc[name]
return None
if __name__ == '__main__':
a = Description('/development/contrib/octave-forge-20090607/main/zenity-0.5.7/DESCRIPTION')
print a.depends
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