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38 lines
1.4 KiB
Kotlin
38 lines
1.4 KiB
Kotlin
package io.provs.entry
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/**
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* Calls a static method of a class.
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* Only methods are supported with either no parameters or with one vararg parameter of type String.
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* Methods with a vararg parameter must be called with at least one argument.
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*
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* @param args specify class and (optionally) method and parameters, in detail:
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* @param args[0] class to be called
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* @param args[1] (optional) static method of the class; if not specified, the "main" method is used
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* @param args[2...] String parameters that are passed to the method, only applicable if method has vararg parameter
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*/
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fun main(vararg args: String) {
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if (args.isNotEmpty()) {
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val className = args[0]
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val jClass = Class.forName(className)
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val parameterTypeStringArray = arrayOf<Class<*>>(
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Array<String>::class.java
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)
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val method = if (args.size == 1) jClass.getMethod("main", *parameterTypeStringArray) else
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(if (args.size == 2 && args[1] != "main") jClass.getMethod(args[1])
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else jClass.getMethod(args[1], *parameterTypeStringArray))
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if ((args.size == 1) || (args.size == 2 && args[1] == "main")) {
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method.invoke(null, emptyArray<String>())
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} else if (args.size == 2) {
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method.invoke(null)
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} else {
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method.invoke(null, args.drop(2).toTypedArray())
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}
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} else {
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println("Usage: <packageName.className> <static methodName>")
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}
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}
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