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