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+#!/usr/bin/env python3
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+#
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+# Copyright (C) 2018 Wind River Systems, Inc.
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+#
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+# This program is free software; you can redistribute it and/or modify
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+# it under the terms of the GNU General Public License version 2 as
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+# published by the Free Software Foundation.
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+#
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+# This program is distributed in the hope that it will be useful,
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+# but WITHOUT ANY WARRANTY; without even the implied warranty of
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+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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+# See the GNU General Public License for more details.
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+#
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+# You should have received a copy of the GNU General Public License
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+# along with this program; if not, write to the Free Software
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+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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+
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+import os
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+import sys
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+import argparse
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+import logging
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+import re
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+
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+class Dot(object):
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+ def __init__(self):
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+ parser = argparse.ArgumentParser(
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+ description="Analyse recipe-depends.dot generated by bitbake -g",
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+ epilog="Use %(prog)s --help to get help")
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+ parser.add_argument("dotfile",
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+ help = "Specify the dotfile", nargs = 1, action='store', default='')
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+ parser.add_argument("-k", "--key",
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+ help = "Specify the key, e.g., recipe name",
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+ action="store", default='')
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+ parser.add_argument("-d", "--depends",
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+ help = "Print the key's dependencies",
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+ action="store_true", default=False)
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+ parser.add_argument("-w", "--why",
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+ help = "Print why the key is built",
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+ action="store_true", default=False)
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+ parser.add_argument("-r", "--remove",
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+ help = "Remove duplicated dependencies to reduce the size of the dot files."
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+ " For example, A->B, B->C, A->C, then A->C can be removed.",
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+ action="store_true", default=False)
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+
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+ self.args = parser.parse_args()
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+
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+ if len(sys.argv) != 3 and len(sys.argv) < 5:
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+ print('ERROR: Not enough args, see --help for usage')
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+
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+ def main(self):
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+ #print(self.args.dotfile[0])
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+ # The format is {key: depends}
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+ depends = {}
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+ with open(self.args.dotfile[0], 'r') as f:
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+ for line in f.readlines():
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+ if ' -> ' not in line:
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+ continue
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+ line_no_quotes = line.replace('"', '')
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+ m = re.match("(.*) -> (.*)", line_no_quotes)
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+ if not m:
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+ print('WARNING: Found unexpected line: %s' % line)
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+ continue
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+ key = m.group(1)
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+ if key == "meta-world-pkgdata":
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+ continue
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+ dep = m.group(2)
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+ if key in depends:
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+ if not key in depends[key]:
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+ depends[key].add(dep)
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+ else:
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+ print('WARNING: Fonud duplicated line: %s' % line)
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+ else:
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+ depends[key] = set()
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+ depends[key].add(dep)
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+
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+ if self.args.remove:
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+ reduced_depends = {}
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+ for k, deps in depends.items():
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+ child_deps = set()
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+ added = set()
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+ # Both direct and indirect depends are already in the dict, so
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+ # we don't have to do this recursively.
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+ for dep in deps:
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+ if dep in depends:
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+ child_deps |= depends[dep]
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+
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+ reduced_depends[k] = deps - child_deps
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+ outfile= '%s-reduced%s' % (self.args.dotfile[0][:-4], self.args.dotfile[0][-4:])
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+ with open(outfile, 'w') as f:
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+ print('Saving reduced dot file to %s' % outfile)
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+ f.write('digraph depends {\n')
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+ for k, v in reduced_depends.items():
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+ for dep in v:
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+ f.write('"%s" -> "%s"\n' % (k, dep))
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+ f.write('}\n')
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+ sys.exit(0)
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+
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+ if self.args.key not in depends:
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+ print("ERROR: Can't find key %s in %s" % (self.args.key, self.args.dotfile[0]))
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+ sys.exit(1)
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+
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+ if self.args.depends:
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+ if self.args.key in depends:
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+ print('Depends: %s' % ' '.join(depends[self.args.key]))
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+
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+ reverse_deps = []
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+ if self.args.why:
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+ for k, v in depends.items():
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+ if self.args.key in v and not k in reverse_deps:
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+ reverse_deps.append(k)
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+ print('Because: %s' % ' '.join(reverse_deps))
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+
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+if __name__ == "__main__":
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+ try:
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+ dot = Dot()
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+ ret = dot.main()
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+ except Exception as esc:
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+ ret = 1
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+ import traceback
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+ traceback.print_exc()
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+ sys.exit(ret)
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