package cn.hxex.exam.util;

import org.apache.commons.lang.StringUtils;

import cn.hxex.exam.Globals;

public class HxexStringUtils 
{
	public static boolean isEmpty( String str )
	{
		return str==null || str.length()==0;
	}
	
	public static String[] splitString( String str )
	{
		return HxexStringUtils.splitString( str, Globals.DEFAULT_DELIM );
	}
	
	public static String[] splitString( String str, String delim )
	{
		if( HxexStringUtils.isEmpty( str ) )
			return null;
		
		if( HxexStringUtils.isEmpty( delim ) )
			delim = Globals.DEFAULT_DELIM;
		
		return str.split( delim );
	}
	
	public static boolean contains( String[] strs, String str )
	{
		if( strs==null || strs.length==0 )
			return false;
		
		if( HxexStringUtils.isEmpty( str ) )
			return false;
		
		for( String s : strs )
		{
			if( str.equals( s ) )
				return true;
		}
		return false;
	}

	public static String substringBetween( String str, String open, String close )
	{
		return StringUtils.substringBetween( str, open, close );
	}
}