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#!/usr/bin/env python3
#
# Copyright (C) 2018 Wind River Systems, Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See the GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

import os
import sys
import argparse
import logging
import re

class Dot(object):
    def __init__(self):
        parser = argparse.ArgumentParser(
            description="Analyse recipe-depends.dot generated by bitbake -g",
            epilog="Use %(prog)s --help to get help")
        parser.add_argument("dotfile",
            help = "Specify the dotfile", nargs = 1, action='store', default='')
        parser.
depends", help = "Print the key's dependencies", action="store_true", default=False) parser.add_argument("-w", "--why", help = "Print why the key is built", action="store_true", default=False) parser.add_argument("-r", "--remove", help = "Remove duplicated dependencies to reduce the size of the dot files." " For example, A->B, B->C, A->C, then A->C can be removed.", action="store_true", default=False) self.args = parser.parse_args() if len(sys.argv) != 3 and len(sys.argv) < 5: print('ERROR: Not enough args, see --help for usage') def main(self): #print(self.args.dotfile[0]) # The format is {key: depends} depends = {} with open(self.args.dotfile[0], 'r') as f: for line in f.readlines(): if ' -> ' not in line: continue line_no_quotes = line.replace('"', '') m = re.match("(.*) -> (.*)", line_no_quotes) if not m: print('WARNING: Found unexpected line: %s' % line) continue key = m.group(1) if key == "meta-world-pkgdata": continue dep = m.group(2) if key in depends: if not key in depends[key]: depends[key].add(dep) else: print('WARNING: Fonud duplicated line: %s' % line) else: depends[key] = set() depends[key].add(dep) if self.args.remove: reduced_depends = {} for k, deps in depends.items(): child_deps = set() added = set() # Both direct and indirect depends are already in the dict, so # we don't have to do this recursively. for dep in deps: if dep in depends: child_deps |= depends[dep] reduced_depends[k] = deps - child_deps outfile= '%s-reduced%s' % (self.args.dotfile[0][:-4], self.args.dotfile[0][-4:]) with open(outfile, 'w') as f: print('Saving reduced dot file to %s' % outfile) f.write('digraph depends {\n') for k, v in reduced_depends.items(): for dep in v: f.write('"%s" -> "%s"\n' % (k, dep)) f.write('}\n') sys.exit(0) if self.args.key not in depends: print("ERROR: Can't find key %s in %s" % (self.args.key, self.args.dotfile[0])) sys.exit(1) if self.args.depends: if self.args.key in depends: print('Depends: %s' % ' '.join(depends[self.args.key])) reverse_deps = [] if self.args.why: for k, v in depends.items(): if self.args.key in v and not k in reverse_deps: reverse_deps.append(k) print('Because: %s' % ' '.join(reverse_deps)) if __name__ == "__main__": try: dot = Dot() ret = dot.main() except Exception as esc: ret = 1 import traceback traceback.print_exc() sys.exit(ret)