org.apache.batik.util
Class ClassFileUtilities

java.lang.Object
  org.apache.batik.util.ClassFileUtilities

public class ClassFileUtilities
extends Object

This class contains utility methods to manipulate Java classes.

Version:

$Id: ClassFileUtilities.java 1733416 2016-03-03 07:07:13Z gadams $

Author:

Stephane Hillion

Nested Class Summary

protected static class	ClassFileUtilities.ClassFile
protected static class	ClassFileUtilities.Jar
protected static class	ClassFileUtilities.Triple

Field Summary

static byte	CONSTANT_CLASS_INFO
static byte	CONSTANT_DOUBLE_INFO
static byte	CONSTANT_FIELDREF_INFO
static byte	CONSTANT_FLOAT_INFO
static byte	CONSTANT_INTEGER_INFO
static byte	CONSTANT_INTERFACEMETHODREF_INFO
static byte	CONSTANT_LONG_INFO
static byte	CONSTANT_METHODREF_INFO
static byte	CONSTANT_NAMEANDTYPE_INFO
static byte	CONSTANT_STRING_INFO
static byte	CONSTANT_UTF8_INFO

Constructor Summary

protected

ClassFileUtilities() This class does not need to be instantiated.

Method Summary

static Set	getClassDependencies(InputStream is) Returns the dependencies of the given class.
static Set	getClassDependencies(InputStream is, Set classpath, boolean rec)
static Set	getClassDependencies(String path, Set classpath, boolean rec) Returns the dependencies of the given class.
protected static Set	getDescriptorClasses(String desc) Returns the classes contained in a field or method desciptor.
static void	main(String[] args) Program that computes the dependencies between the Batik jars.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

CONSTANT_UTF8_INFO

public static final byte CONSTANT_UTF8_INFO

See Also:

Constant Field Values

CONSTANT_INTEGER_INFO

public static final byte CONSTANT_INTEGER_INFO

See Also:

Constant Field Values

CONSTANT_FLOAT_INFO

public static final byte CONSTANT_FLOAT_INFO

See Also:

Constant Field Values

CONSTANT_LONG_INFO

public static final byte CONSTANT_LONG_INFO

See Also:

Constant Field Values

CONSTANT_DOUBLE_INFO

public static final byte CONSTANT_DOUBLE_INFO

See Also:

Constant Field Values

CONSTANT_CLASS_INFO

public static final byte CONSTANT_CLASS_INFO

See Also:

Constant Field Values

CONSTANT_STRING_INFO

public static final byte CONSTANT_STRING_INFO

See Also:

Constant Field Values

CONSTANT_FIELDREF_INFO

public static final byte CONSTANT_FIELDREF_INFO

See Also:

Constant Field Values

CONSTANT_METHODREF_INFO

public static final byte CONSTANT_METHODREF_INFO

See Also:

Constant Field Values

CONSTANT_INTERFACEMETHODREF_INFO

public static final byte CONSTANT_INTERFACEMETHODREF_INFO

See Also:

Constant Field Values

CONSTANT_NAMEANDTYPE_INFO

public static final byte CONSTANT_NAMEANDTYPE_INFO

See Also:

Constant Field Values

Constructor Detail

ClassFileUtilities

protected ClassFileUtilities()

This class does not need to be instantiated.

Method Detail

main

public static void main(String[] args)

Program that computes the dependencies between the Batik jars.

Run this from the main Batik distribution directory, after building the jars. For every jar file in the batik-xxx/ build directory, it will determine which other jar files it directly depends on. The output is lines of the form:

  number,from,to

where mean that the from jar has number class files that depend on class files in the to jar.

getClassDependencies

public static Set getClassDependencies(String path,
                                       Set classpath,
                                       boolean rec)
                                throws IOException

Returns the dependencies of the given class.

Parameters:

path - The root class path.

classpath - The set of directories (Strings) to scan.

rec - Whether to follow dependencies recursively.

Returns:

a list of paths representing the used classes.

Throws:

IOException

getClassDependencies

public static Set getClassDependencies(InputStream is,
                                       Set classpath,
                                       boolean rec)
                                throws IOException

Throws:

IOException

getClassDependencies

public static Set getClassDependencies(InputStream is)
                                throws IOException

Returns the dependencies of the given class.

Returns:

a list of strings representing the used classes.

Throws:

IOException

getDescriptorClasses

protected static Set getDescriptorClasses(String desc)

Returns the classes contained in a field or method desciptor.