package org.hwo;

import java.util.Arrays;
import java.util.Collection;
import java.util.Iterator;

public class StringHelper {

	public static String join(String[] c,String del)
	{
		return join( Arrays.asList(c),del);
	}

	public static String join(float[] c,String del)
	{
		StringBuilder sb = new StringBuilder();
		FloatIterator iter = new FloatIterator(c);
		while (iter.hasNext())
		{
			sb.append(iter.next());
			if (!iter.hasNext())
				break;
			sb.append(del);
		}
		return sb.toString();
	}

	public static String join(String format,float[] c,String del)
	{
		StringBuilder sb = new StringBuilder();
		FloatIterator iter = new FloatIterator(c);
		while (iter.hasNext())
		{
			sb.append(String.format(format,iter.next()));
			if (!iter.hasNext())
				break;
			sb.append(del);
		}
		return sb.toString();
	}

	public static String join(Collection<?> c,String del)
	{
		StringBuilder sb = new StringBuilder();
		Iterator<?> iter = c.iterator();
		while (iter.hasNext())
		{
			sb.append(iter.next());
			if (!iter.hasNext())
				break;
			sb.append(del);
		}
		return sb.toString();
	}
	
	public static String fromCharacters(Character[] chars){
		char[] chs = new char[chars.length];
		
		for (int i=0;i<chars.length;i++)
			chs[i] = chars[i].charValue();
		
		return new String(chs);
	}
	
	public static byte[] toCString(String s){
		byte[] b = new byte[ s.length() + 1];
		
		for (int i=0;i<s.length();i++)
			b[i] = (byte)s.charAt(i);
		b[s.length()] = 0x00;
		return b;
	}
	
	public static String fromCString(byte[] bytes){
		char[] c = new char[bytes.length-1];
		for (int i=0;i<c.length-1;i++)
			c[i] = (char)bytes[i];
		return new String(c);
	}
	
	
}