Path.java

package kaaass.es2k.packet;

import java.util.ArrayList;
import java.util.List;

public class Path {
	private final static String AUTHOR = "kaaass";

	public final static int ROOT = 0;
	public final static int TAG = 1;
	public final static int KEY = 2;

	private int type = 0;
	private String root = null;
	private List<String> tag = new ArrayList<String>();
	private String key = null;

	public Path(String root) {
		this.root = root;
	}
	
	public String getRoot() {
		return this.root;
	}
	
	public Path root(String root) {
		this.root = root;
		return this;
	}
	
	public String getTag(int index) {
		if (index < 0 || index > this.tag.size() - 1) {
			index = this.tag.size() - 1;
		}
		return this.tag.get(index);
	}
	
	public String[] getTagArray() {
		String[] s = new String[this.tag.size()];
		for (int i = 0; i < this.tag.size(); i++) {
			s[i] = this.tag.get(i);
		}
		return s;
	}
	
	public List<String> getTagList() {
		return this.tag;
	}
	
	public Path tag(String... tag) {
		for (String i: tag) {
			this.tag.add(i);
		}
		return this;
	}
	
	public Path setTag(String tag) {
		this.tag.clear();
		this.tag.add(tag);
		return this;
	}
	
	public Path setTag(String[] tag) {
		this.tag.clear();
		for (String i: tag) {
			this.tag.add(i);
		}
		return this;
	}
	
	public Path setTag(List<String> tag) {
		this.tag = tag;
		return this;
	}
	
	public String getKey() {
		return this.key;
	}
	
	public Path key(String key) {
		this.key = key;
		return this;
	}
	
	public String toString() {
		String tag = "";
		switch (this.type) {
		case ROOT:
			return AUTHOR + "://" + this.root;
		case TAG:
			for (String i: this.tag) {
				tag += i + "/";
			}
			return AUTHOR + "://" + this.root + ":" + tag;
		case KEY:
			for (String i: this.tag) {
				tag += i + "/";
			}
			return AUTHOR + "://" + this.root + ":" + tag + this.key;
		}
		return null;
	}

	public Path parse(String pth) {
		if (pth.startsWith(AUTHOR + "://")) {
			String p = pth.substring(AUTHOR.length() + 3);
			this.root = p.split(":")[0];
			if(p.split(":").length > 1) {
				p = p.split(":")[1];
				for (String i: p.split("/")) {
					this.tag.add(i);
				}
				if (pth.endsWith("/")) {
					this.type = TAG;
				} else {
					this.key = this.tag.get(this.tag.size() - 1);
					this.tag.remove(this.tag.size() - 1);
					this.type = KEY;
				}
			} else {
				this.type = ROOT;
			}
		}
		return this;
	}
	
	public int getType() {
		return this.type;
	}
}