67 lines
2.5 KiB
Java
67 lines
2.5 KiB
Java
package com.ibm.text.utility;
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import java.lang.reflect.InvocationTargetException;
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import java.lang.reflect.Method;
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import com.ibm.icu.dev.test.util.BagFormatter;
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public class CallArgs {
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static BagFormatter bf = new BagFormatter();
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public static String getPrefix(Class c) {
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String prefix = c.getName();
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int pos = prefix.lastIndexOf('.');
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if (pos < 0) return "";
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return prefix.substring(0,pos+1);
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}
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public static void call(String[] args, String prefix) throws Exception {
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for (int i = 0; i < args.length; ++i) {
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String arg = args[i];
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if (arg.startsWith("#")) break; // comments out rest of line
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String[] methodArgs = null;
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int par = arg.indexOf('(');
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if (par >= 0) {
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methodArgs = Utility.split(arg.substring(par+1, arg.length()-1),',');
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arg = arg.substring(0,par);
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}
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int pos = arg.indexOf('.');
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Method method = null;
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String className = "Main";
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String methodName = "";
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if (pos >= 0) {
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className = prefix + arg.substring(0,pos);
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methodName = arg.substring(pos+1);
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method = tryMethod(className, methodName, methodArgs);
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} else {
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method = tryMethod(className, arg, methodArgs);
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if (method == null) {
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className = arg;
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methodName = "main";
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method = tryMethod(className, methodName, methodArgs);
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}
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}
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if (method == null) throw new IllegalArgumentException("Bad parameter: " + className + ", " + methodName);
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System.out.println(method.getName() + "\t" + bf.join(methodArgs));
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method.invoke(null,methodArgs);
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}
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}
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private static Method tryMethod(String className, String methodName, String[] methodArgs)
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throws IllegalAccessException, InvocationTargetException {
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try {
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Class foo = Class.forName(className);
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Class[] parameterTypes = null;
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if (methodArgs != null) {
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parameterTypes = new Class[methodArgs.length];
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for (int i = 0; i < methodArgs.length; ++i) {
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parameterTypes[i] = String.class;
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}
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}
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return foo.getDeclaredMethod(methodName,parameterTypes);
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} catch (Exception e) {
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return null;
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}
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}
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} |