| # Copyright 2014 Gentoo Foundation |
| # Distributed under the terms of the GNU General Public License v2 |
| |
| from __future__ import unicode_literals |
| |
| import collections |
| import sys |
| |
| from portage.versions import _pkg_str |
| |
| if sys.hexversion >= 0x3000000: |
| _unicode = str |
| else: |
| _unicode = unicode |
| |
| pkg_desc_index_node = collections.namedtuple("pkg_desc_index_node", |
| ["cp", "cpv_list", "desc"]) |
| |
| class pkg_node(_unicode): |
| """ |
| A minimal package node class. For performance reasons, inputs |
| are not validated. |
| """ |
| |
| def __init__(self, cp, version, repo=None): |
| self.__dict__['cp'] = cp |
| self.__dict__['repo'] = repo |
| self.__dict__['version'] = version |
| self.__dict__['build_time'] = None |
| |
| def __new__(cls, cp, version, repo=None): |
| return _unicode.__new__(cls, cp + "-" + version) |
| |
| def __setattr__(self, name, value): |
| raise AttributeError("pkg_node instances are immutable", |
| self.__class__, name, value) |
| |
| def pkg_desc_index_line_format(cp, pkgs, desc): |
| return "%s %s: %s\n" % (cp, |
| " ".join(_pkg_str(cpv).version |
| for cpv in pkgs), desc) |
| |
| def pkg_desc_index_line_read(line, repo=None): |
| |
| try: |
| pkgs, desc = line.split(":", 1) |
| except ValueError: |
| return None |
| desc = desc.strip() |
| |
| try: |
| cp, pkgs = pkgs.split(" ", 1) |
| except ValueError: |
| return None |
| |
| cp_list = [] |
| for ver in pkgs.split(): |
| cp_list.append(pkg_node(cp, ver, repo)) |
| |
| return pkg_desc_index_node(cp, tuple(cp_list), desc) |