50 lines
1.4 KiB
Java
50 lines
1.4 KiB
Java
//: com/mindviewinc/util/ProcessFiles.java
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// ©2015 MindView LLC: see Copyright.txt
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// {ValidateByHand}
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package com.mindviewinc.util;
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import java.io.*;
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public class ProcessFiles {
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public interface Strategy {
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void process(File file);
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}
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private Strategy strategy;
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private String ext;
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public ProcessFiles(Strategy strategy, String ext) {
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this.strategy = strategy;
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this.ext = ext;
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}
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public void start(String[] args) {
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try {
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if(args.length == 0)
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processDirectoryTree(new File("."));
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else
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for(String arg : args) {
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File fileArg = new File(arg);
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if(fileArg.isDirectory())
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processDirectoryTree(fileArg);
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else {
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// Allow user to leave off extension:
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if(!arg.endsWith("." + ext))
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arg += "." + ext;
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strategy.process(
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new File(arg).getCanonicalFile());
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}
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}
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} catch(IOException e) {
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throw new RuntimeException(e);
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}
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}
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public void
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processDirectoryTree(File root) throws IOException {
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for(File file : Directory.walk(
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root.getAbsolutePath(), ".*\\." + ext))
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strategy.process(file.getCanonicalFile());
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}
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// Demonstration of how to use it:
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public static void main(String[] args) {
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new ProcessFiles(file -> System.out.println(file),
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"java").start(args);
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}
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} /* Output: (Execute to see) *///:~
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