ソリューション
jar ファイルは基本的に圧縮されたアーカイブであるため、Python の標準ライブラリのzipfile
モジュールを使用してコンテンツを読み取り、jar のコンテンツの関係をテキストおよびグラフィック表現で準備します。
テキスト表現
質問に記載されているファイルの場合verletphysics.jar
、以下のコードはこの内容のリストを生成します。
META-INF/
META-INF/MANIFEST.MF
toxi/
toxi/physics/
toxi/physics/behaviors/
toxi/physics/constraints/
toxi/physics2d/
toxi/physics2d/behaviors/
toxi/physics2d/constraints/
toxi/physics/ParticlePath.class
toxi/physics/ParticleString.class
toxi/physics/PullBackString.class
toxi/physics/VerletConstrainedSpring.class
toxi/physics/VerletMinDistanceSpring.class
toxi/physics/VerletParticle.class
toxi/physics/VerletPhysics.class
toxi/physics/VerletSpring.class
toxi/physics/behaviors/AttractionBehavior.class
toxi/physics/behaviors/ConstantForceBehavior.class
toxi/physics/behaviors/GravityBehavior.class
toxi/physics/behaviors/ParticleBehavior.class
toxi/physics/constraints/AxisConstraint.class
toxi/physics/constraints/BoxConstraint.class
toxi/physics/constraints/CylinderConstraint.class
toxi/physics/constraints/MaxConstraint.class
toxi/physics/constraints/MinConstraint.class
toxi/physics/constraints/ParticleConstraint.class
toxi/physics/constraints/PlaneConstraint.class
toxi/physics/constraints/SoftBoxConstraint.class
toxi/physics/constraints/SphereConstraint.class
toxi/physics2d/ParticlePath2D.class
toxi/physics2d/ParticleString2D.class
toxi/physics2d/PullBackString2D.class
toxi/physics2d/VerletConstrainedSpring2D.class
toxi/physics2d/VerletMinDistanceSpring2D.class
toxi/physics2d/VerletParticle2D.class
toxi/physics2d/VerletPhysics2D.class
toxi/physics2d/VerletSpring2D.class
toxi/physics2d/behaviors/AttractionBehavior.class
toxi/physics2d/behaviors/ConstantForceBehavior.class
toxi/physics2d/behaviors/GravityBehavior.class
toxi/physics2d/behaviors/ParticleBehavior2D.class
toxi/physics2d/constraints/AngularConstraint.class
toxi/physics2d/constraints/AxisConstraint.class
toxi/physics2d/constraints/CircularConstraint.class
toxi/physics2d/constraints/MaxConstraint.class
toxi/physics2d/constraints/MinConstraint.class
toxi/physics2d/constraints/ParticleConstraint2D.class
toxi/physics2d/constraints/RectConstraint.class
verletphysics.mf
キー
上記のパス名の各ノードが抽出され、次のようにコードによって一意の ID が与えられます。
Index File
0 behaviors
1 BoxConstraint.class
2 MaxConstraint.class
3 VerletParticle.class
4 ParticleConstraint2D.class
5 ConstantForceBehavior.class
6 META-INF
7 VerletMinDistanceSpring2D.class
8 AxisConstraint.class
9 AttractionBehavior.class
10 physics2d
11 VerletPhysics.class
12 PullBackString.class
13 VerletSpring.class
14 VerletConstrainedSpring.class
15 ParticleString2D.class
16 verletphysics.mf
17 ParticleBehavior2D.class
18 ParticleString.class
19 RectConstraint.class
20 CylinderConstraint.class
21 toxi
22 VerletMinDistanceSpring.class
23 VerletSpring2D.class
24 VerletParticle2D.class
25 ParticlePath2D.class
26 CircularConstraint.class
27 ParticlePath.class
28 MinConstraint.class
29 MANIFEST.MF
30 ParticleConstraint.class
31 GravityBehavior.class
32 VerletPhysics2D.class
33 SoftBoxConstraint.class
34 ParticleBehavior.class
35 VerletConstrainedSpring2D.class
36 PlaneConstraint.class
37 PullBackString2D.class
38 SphereConstraint.class
39 physics
40 AngularConstraint.class
41 constraints
グラフ
パス名は、 NetworkXを使用してこのネットワークに構築され、 matplotlibでプロットされるエッジに変換されます。
コード
import zipfile
import networkx as nx
import matplotlib.pyplot as plt
# Download the code from
# http://www.openprocessing.org/sketch/46757
# Unzip and find the jar file: verletphysics.jar
# This example uses that file for demo
def get_edges(fName):
edges = []
nodes = []
jar = zipfile.ZipFile(fName, "r")
for name in jar.namelist():
print name # prints the list of files in the jar
if name.endswith('/'): name = name[:-1]
parts = name.split('/')
nodes.extend( parts )
if len(parts) > 1:
edges += zip(nodes[:-1], nodes[1:])
nodes = set(nodes)
nodes = dict( zip(nodes, range(len(nodes)) ) )
edges = [ (nodes[ edge[0] ], nodes[ edge[1] ])
for edge in edges ]
nodes = [ (index, label) for label, index in nodes.iteritems() ]
nodes = sorted( nodes, key = lambda node: node[0] )
return set( edges ), nodes
if __name__ == '__main__':
fName = 'verletphysics.jar'
edges, nodes = get_edges(fName)
# print list of nodes
# serving as a key to the graph
print '%10s %s' % ('Index', 'File')
for node in nodes:
print '%10s %s' % (node[0], node[1])
# Plot the network graph
G = nx.Graph()
G.add_edges_from( edges )
nx.draw_networkx(G, pos=nx.spring_layout(G))
plt.axis('off')
plt.show()