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- # Copyright (C) 2010-2013 Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
- # Copyright (C) 2019 Yann E. MORIN <yann.morin.1998@free.fr>
- import json
- import logging
- import os
- import subprocess
- from collections import defaultdict
- # This function returns a tuple of four dictionaries, all using package
- # names as keys:
- # - a dictionary which values are the lists of packages that are the
- # dependencies of the package used as key;
- # - a dictionary which values are the lists of packages that are the
- # reverse dependencies of the package used as key;
- # - a dictionary which values are the type of the package used as key;
- # - a dictionary which values are the version of the package used as key,
- # 'virtual' for a virtual package, or the empty string for a rootfs.
- def get_dependency_tree():
- logging.info("Getting dependency tree...")
- deps = {}
- rdeps = defaultdict(list)
- types = {}
- versions = {}
- # Special case for the 'all' top-level fake package
- deps['all'] = []
- types['all'] = 'target'
- versions['all'] = ''
- cmd = ["make", "-s", "--no-print-directory", "show-info"]
- with open(os.devnull, 'wb') as devnull:
- p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=devnull,
- universal_newlines=True)
- pkg_list = json.loads(p.communicate()[0])
- for pkg in pkg_list:
- deps['all'].append(pkg)
- types[pkg] = pkg_list[pkg]["type"]
- deps[pkg] = pkg_list[pkg].get("dependencies", [])
- for p in deps[pkg]:
- rdeps[p].append(pkg)
- versions[pkg] = \
- None if pkg_list[pkg]["type"] == "rootfs" \
- else "virtual" if pkg_list[pkg]["virtual"] \
- else pkg_list[pkg]["version"]
- return (deps, rdeps, types, versions)
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