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core/graph-depends: add option to graph reverse dependencies

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Now that we can dump the reverse dependencies of a package, add the
ability to graph those.

It does not make sense to do a full reverse graph, as it would be
semantically equivalent to the direct graph. So we only provide a
per-package reverse graph.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Arnout Vandecappelle <arnout@mind.be>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
This commit is contained in:
Yann E. MORIN
2016-10-23 19:19:44 +02:00
committed by Thomas Petazzoni
parent f33fcdf225
commit 2a2eb55ca7
3 changed files with 32 additions and 10 deletions
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18
support/scripts/graph-depends
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@@ -63,6 +63,10 @@ parser.add_argument("--transitive", dest="transitive", action='store_true',
default=False)
parser.add_argument("--no-transitive", dest="transitive", action='store_false',
help="Draw (do not draw) transitive dependencies")
parser.add_argument("--direct", dest="direct", action='store_true', default=True,
help="Draw direct dependencies (the default)")
parser.add_argument("--reverse", dest="direct", action='store_false',
help="Draw reverse dependencies")
args = parser.parse_args()
check_only = args.check_only
@@ -95,6 +99,16 @@ else:
transitive = args.transitive
if args.direct:
rule = "show-depends"
arrow_dir = "forward"
else:
if mode == MODE_FULL:
sys.stderr.write("--reverse needs a package\n")
sys.exit(1)
rule = "show-rdepends"
arrow_dir = "back"
# Get the colours: we need exactly three colours,
# so no need not split more than 4
# We'll let 'dot' validate the colours...
@@ -151,7 +165,7 @@ def get_depends(pkgs):
sys.stderr.write("Getting dependencies for %s\n" % pkgs)
cmd = ["make", "-s", "--no-print-directory" ]
for pkg in pkgs:
cmd.append("%s-show-depends" % pkg)
cmd.append("%s-%s" % (pkg, rule))
p = subprocess.Popen(cmd, stdout=subprocess.PIPE, universal_newlines=True)
output = p.communicate()[0]
if p.returncode != 0:
@@ -418,7 +432,7 @@ def print_pkg_deps(depth, pkg):
add = False
break
if add:
outfile.write("%s -> %s\n" % (pkg_node_name(pkg), pkg_node_name(d)))
outfile.write("%s -> %s [dir=%s]\n" % (pkg_node_name(pkg), pkg_node_name(d), arrow_dir))
print_pkg_deps(depth+1, d)
# Start printing the graph data