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support/graph-depends: use argparse to parse argv[]

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Currently, we are using a crude, ad-hoc parsing of argv[].
This is a limiting factor to adding new options.

Use argparse instead, and introduce a single argument for now:
  --package, -p PACKAGE

In the (near) future, we'll be able to add more option arguments,
such as depth-limiting for big graphs.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
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 2014-04-13 22:42:38 +02:00 committed by Thomas Petazzoni
parent 22d05901c3
commit 3d37950ec1
2 changed files with 14 additions and 11 deletions
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2
package/pkg-generic.mk
View File

@ -495,7 +495,7 @@ $(1)-show-depends:
$(1)-graph-depends:
@$(INSTALL) -d $(O)/graphs
@cd "$(CONFIG_DIR)"; \
$(TOPDIR)/support/scripts/graph-depends $(1) \
$(TOPDIR)/support/scripts/graph-depends -p $(1) \
|dot -T$(BR_GRAPH_OUT) -o $(O)/graphs/$$(@).$(BR_GRAPH_OUT)
$(1)-dirclean: $$($(2)_TARGET_DIRCLEAN)

23
support/scripts/graph-depends
View File

@ -1,13 +1,13 @@
#!/usr/bin/python
# Usage (the graphviz package must be installed in your distribution)
# ./support/scripts/graph-depends [package-name] > test.dot
# ./support/scripts/graph-depends [-p package-name] > test.dot
# dot -Tpdf test.dot -o test.pdf
#
# With no arguments, graph-depends will draw a complete graph of
# dependencies for the current configuration. With an argument,
# graph-depends will draw a graph of dependencies for the given
# package name.
# dependencies for the current configuration.
# If '-p <package-name>' is specified, graph-depends will draw a graph
# of dependencies for the given package name.
#
# Limitations
#
@ -21,6 +21,7 @@
import sys
import subprocess
import argparse
# In FULL_MODE, we draw the full dependency graph for all selected
# packages
@ -31,14 +32,16 @@ PKG_MODE = 2
mode = 0
if len(sys.argv) == 1:
parser = argparse.ArgumentParser(description="Graph pacakges dependencies")
parser.add_argument("--package", '-p', metavar="PACKAGE",
help="Graph the dependencies of PACKAGE")
args = parser.parse_args()
if args.package == None:
mode = FULL_MODE
elif len(sys.argv) == 2:
mode = PKG_MODE
rootpkg = sys.argv[1]
else:
print "Usage: graph-depends [package-name]"
sys.exit(1)
mode = PKG_MODE
rootpkg = args.package
allpkgs = []