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Changed JCallGraph to be able to process not only JAR files, but also… #12

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96c9ae5
Changed JCallGraph to be able to process not only JAR files, but also…
Jul 1, 2017
d0bcf62
Added bci to method calls.
Jul 1, 2017
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71 changes: 46 additions & 25 deletions src/main/java/gr/gousiosg/javacg/stat/JCallGraph.java
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Original file line number Diff line number Diff line change
Expand Up @@ -37,44 +37,65 @@
import org.apache.bcel.classfile.ClassParser;

/**
* Constructs a callgraph out of a JAR archive. Can combine multiple archives
* into a single call graph.
* Constructs a callgraph out of a set of directories, classes and JAR archives.
* Can combine multiple archives into a single call graph.
*
* @author Georgios Gousios <gousiosg@gmail.com>
*
*/
public class JCallGraph {

public static void main(String[] args) {
ClassParser cp;
try {
for (String arg : args) {
public static void processClass(String class_name) throws IOException {
ClassParser cp = new ClassParser(class_name);
ClassVisitor visitor = new ClassVisitor(cp.parse());
visitor.start();
}

public static void processClass(String jar_name, String class_name) throws IOException {
ClassParser cp = new ClassParser(jar_name,class_name);
ClassVisitor visitor = new ClassVisitor(cp.parse());
visitor.start();
}

public static void processJar(JarFile jar) throws IOException {
Enumeration<JarEntry> entries = jar.entries();
while (entries.hasMoreElements()) {
JarEntry entry = entries.nextElement();
if (entry.isDirectory())
continue;

File f = new File(arg);

if (!f.exists()) {
System.err.println("Jar file " + arg + " does not exist");
}

JarFile jar = new JarFile(f);
if (!entry.getName().endsWith(".class"))
continue;

Enumeration<JarEntry> entries = jar.entries();
while (entries.hasMoreElements()) {
JarEntry entry = entries.nextElement();
if (entry.isDirectory())
continue;
processClass(jar.getName(),entry.getName());
}
}

if (!entry.getName().endsWith(".class"))
continue;
public static void processFile(File file) {
try {
if (!file.exists())
System.err.println("File " + file.getName() + " does not exist");

cp = new ClassParser(arg,entry.getName());
ClassVisitor visitor = new ClassVisitor(cp.parse());
visitor.start();
}
else if (file.isDirectory()) {
for (File dfile : file.listFiles())
processFile(dfile);
}

else if (file.getName().endsWith(".jar"))
processJar(new JarFile(file));

else if (file.getName().endsWith(".class"))
processClass(file.getAbsolutePath());

} catch (IOException e) {
System.err.println("Error while processing jar: " + e.getMessage());
System.err.println("Error while processing file: " + e.getMessage());
e.printStackTrace();
}
}

public static void main(String[] args) {
for (String arg : args) {
processFile(new File(arg));
}
}
}
12 changes: 6 additions & 6 deletions src/main/java/gr/gousiosg/javacg/stat/MethodVisitor.java
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Original file line number Diff line number Diff line change
Expand Up @@ -48,7 +48,7 @@ public MethodVisitor(MethodGen m, JavaClass jc) {
visitedClass = jc;
mg = m;
cp = mg.getConstantPool();
format = "M:" + visitedClass.getClassName() + ":" + mg.getName() + "(" + argumentList(mg.getArgumentTypes()) + ")"
format = "M:" + visitedClass.getClassName() + ":" + mg.getName() + "(" + argumentList(mg.getArgumentTypes()) + "):%d"
+ " " + "(%s)%s:%s(%s)";
}

Expand Down Expand Up @@ -84,27 +84,27 @@ private boolean visitInstruction(Instruction i) {

@Override
public void visitINVOKEVIRTUAL(INVOKEVIRTUAL i) {
System.out.println(String.format(format,"M",i.getReferenceType(cp),i.getMethodName(cp),argumentList(i.getArgumentTypes(cp))));
System.out.println(String.format(format,i.getIndex(),"M",i.getReferenceType(cp),i.getMethodName(cp),argumentList(i.getArgumentTypes(cp))));
}

@Override
public void visitINVOKEINTERFACE(INVOKEINTERFACE i) {
System.out.println(String.format(format,"I",i.getReferenceType(cp),i.getMethodName(cp),argumentList(i.getArgumentTypes(cp))));
System.out.println(String.format(format,i.getIndex(),"I",i.getReferenceType(cp),i.getMethodName(cp),argumentList(i.getArgumentTypes(cp))));
}

@Override
public void visitINVOKESPECIAL(INVOKESPECIAL i) {
System.out.println(String.format(format,"O",i.getReferenceType(cp),i.getMethodName(cp),argumentList(i.getArgumentTypes(cp))));
System.out.println(String.format(format,i.getIndex(),"O",i.getReferenceType(cp),i.getMethodName(cp),argumentList(i.getArgumentTypes(cp))));
}

@Override
public void visitINVOKESTATIC(INVOKESTATIC i) {
System.out.println(String.format(format,"S",i.getReferenceType(cp),i.getMethodName(cp),argumentList(i.getArgumentTypes(cp))));
System.out.println(String.format(format,i.getIndex(),"S",i.getReferenceType(cp),i.getMethodName(cp),argumentList(i.getArgumentTypes(cp))));
}

@Override
public void visitINVOKEDYNAMIC(INVOKEDYNAMIC i) {
System.out.println(String.format(format,"D",i.getType(cp),i.getMethodName(cp),
System.out.println(String.format(format,i.getIndex(),"D",i.getType(cp),i.getMethodName(cp),
argumentList(i.getArgumentTypes(cp))));
}
}