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"""
A package source module to import packages from configured portage repositories
"""
import os
import re
from functools import cmp_to_key
from os import path
from portage.versions import best, suffix_value, vercmp
from pomu.package import Package
from pomu.repo.repo import portage_repos, portage_repo_path
from pomu.source import dispatcher
from pomu.util.result import Result
from pomu.util.str import pivot
class PortagePackage():
"""A class to represent a portage package"""
__name__ = 'portage'
def __init__(self, repo, category, name, version, slot='0'):
self.repo = repo
self.category = category
self.name = name
self.version = version
self.slot = slot
def fetch(self):
return Package(self, self.name, portage_repo_path(self.repo),
category=self.category, version=self.version, slot=self.slot,
files=[path.join(self.category, self.name, 'metadata.xml'),
path.join(self.category, self.name, self.name + '-' + self.version + '.ebuild')])
def write_meta(self, pkgdir):
with open(path.join(pkgdir, 'PORTAGE_DATA'), 'w') as f:
f.write(self.repo + '\n')
f.write(self.category + '\n')
f.write(self.name + '\n')
f.write(self.version + '\n')
f.write(self.slot + '\n')
@staticmethod
def from_data_file(path):
try:
lines = [x.strip() for x in open(path, 'r')]
except:
return Result.Err('Could not read data file')
if len(lines) < 5:
return Result.Err('Invalid data provided')
res = PortagePackage()
res.repo, res.category, res.name, res.version, res.slot, *_ = lines
if sanity_check(res.repo, res.category, res.name, None, None, None, res.slot, ver=res.version):
return Result.Ok(res)
return Result.Err('Package {} not found'.format(res))
def __str__(self):
return '{}/{}-{}{}::{}'.format(self.category, self.name, self.version,
'' if self.slot == '0' else ':' + self.slot, self.repo)
suffixes = [x[0] for x in sorted(suffix_value.items(), key=lambda x:x[1])]
misc_dirs = ['profiles', 'licenses', 'eclass', 'metadata', 'distfiles', 'packages', 'scripts', '.git']
@dispatcher.source
class PortageSource():
"""The source module responsible for fetching portage packages"""
@dispatcher.handler(priority=5)
def parse_spec(uri, repo=None):
# dev-libs/openssl-0.9.8z_p8-r100:0.9.8::gentoo
pkg, _, repo_ = uri.partition('::') # portage repo may be specified on the rhs as well
if repo_:
repo = repo_
# dev-libs/openssl-0.9.8z_p8-r100:0.9.8
pkg, _, slot = uri.partition(':') # slot may be omitted
if not slot:
slot = None
category, name, vernum, suff, rev = cpv_split(pkg)
res = sanity_check(repo, category, name, vernum, suff, rev, slot)
if not res:
return Result.Err()
return Result.Ok(res)
@dispatcher.handler()
def parse_full(uri):
# portage/gentoo:dev-libs/openssl-0.9.8z_p8-r100:0.9.8::gentoo
if not uri.startswith('portage'):
return Result.Err()
uri = uri[len('portage'):]
# gentoo:dev-libs/openssl-0.9.8z_p8-r100:0.9.8::gentoo
if uri.startswith('/'): # repo may be omitted
repo, _, uri_ = uri[1:].partition(':')
if uri_ == uri[1:]:
return Result.Err()
uri = uri_
elif uri.startswith(':'):
repo = None
uri = uri[1:]
return parse_spec(uri, repo)
@classmethod
def fetch_package(cls, pkg):
return pkg.fetch()
@classmethod
def from_meta_dir(cls, metadir):
return PortagePackage.from_data_dir(cls, path.join(metadir, 'PORTAGE_DATA'))
def sanity_check(repo, category, name, vernum, suff, rev, slot, ver=None):
"""
Checks whether a package descriptor is valid and corresponds
to a package in a configured portage repository
"""
if not name:
return False
if repo and repo not in list(portage_repos()):
return False
if not ver:
if (rev or suff) and not vernum:
return False
if vernum:
ver = ver_str(vernum, suff, rev)
else:
ver = None
pkgs = repo_pkgs(repo, category, name, ver, slot)
if not pkgs:
return False
pkg = sorted(pkgs, key=cmp_to_key(lambda x,y:vercmp(x[3],y[3])), reverse=True)[0]
return PortagePackage(*pkg)
def ver_str(vernum, suff, rev):
"""Gets the string representation of the version"""
return vernum + (suff if suff else '') + (rev if rev else '')
def best_ver(repo, category, name, ver=None):
"""Gets the best (newest) version of a package in the repo"""
ebuilds = [category + '/' + name + x[len(name):-7] for x in
os.listdir(path.join(portage_repo_path(repo), category, name))
if x.endswith('.ebuild')]
cat, name, vernum, suff, rev = cpv_split(best(ebuilds))
return ver_str(vernum, suff, rev)
def repo_pkgs(repo, category, name, ver=None, slot=None):
"""List of package occurences in the repo"""
if not repo:
res = []
for r in portage_repos():
res.extend(repo_pkgs(r, category, name, ver, slot))
return res
if category:
if path.exists(path.join(portage_repo_path(repo), category, name)):
return [(repo, category, name, best_ver(repo, category, name))]
return []
rpath = portage_repo_path(repo)
dirs = set(os.listdir(rpath)) - set(misc_dirs)
res = []
for d in dirs:
if path.isdir(path.join(rpath, d, name)):
res.append((repo, d, name, best_ver(repo, d, name)))
return res
def cpv_split(pkg):
# dev-libs/openssl-0.9.8z_p8-r100
category, _, pkg = pkg.rpartition('/') # category may be omitted
# openssl-0.9.8z_p8-r100
m = re.search(r'-r\d+$', pkg) # revision is optional
if m:
pkg, rev = pivot(pkg, m.start(0), False)
else:
rev = None
# openssl-0.9.8z_p8
m = re.search(r'_({})(\d*)$'.format('|'.join(suffixes)), pkg)
if m:
pkg, suff = pivot(pkg, m.start(0), False)
else:
suff = None
# openssl-0.9.8z
m = re.search(r'-(\d+(\.\d+)*)([a-z])?$', pkg)
if m:
pkg, vernum = pivot(pkg, m.start(0), False)
else:
vernum = None
# openssl
name = pkg
return category, name, vernum, suff, rev
__all__ = [PortagePackage, PortageSource]
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