package?com.googlecode.pupsniffer;

import?java.io.ByteArrayInputStream;
import?java.io.IOException;
import?java.io.InputStream;
import?java.io.UnsupportedEncodingException;
import?java.net.MalformedURLException;
import?java.net.URL;
import?java.nio.charset.Charset;
import?java.util.Iterator;
import?java.util.Set;
import?java.util.SortedMap;

import?info.monitorenter.cpdetector.io.*;

/**
?*?A?simple?encoding?detector?based?on?cpdetector.sf.net
?*?@author?Xuchen?Yao
?*?@since?2010-03-30
?*/
public?class?EncodingDetector?{
	protected?CodepageDetectorProxy?detector;

	public?EncodingDetector（）?{
		detector?=?CodepageDetectorProxy.getInstance（）;?//?A?singleton.
		//?Add?the?implementations?of?info.monitorenter.cpdetector.io.ICodepageDetector:
		//?This?one?is?quick?if?we?deal?with?unicode?codepages:
		detector.add（new?ByteOrderMarkDetector（））;
		//?The?first?instance?delegated?to?tries?to?detect?the?meta?charset?attribut?in?html?pages.
		detector.add（new?ParsingDetector（false））;?//?be?verbose?about?parsing.
		//?This?one?does?the?tricks?of?exclusion?and?frequency?detection?if?first?implementation?is
		//?unsuccessful:
		detector.add（JChardetFacade.getInstance（））;?//?Another?singleton.
		detector.add（ASCIIDetector.getInstance（））;?//?Fallback?see?javadoc.
	}

	/**
	?*?Detect?the?encoding?of?a?URL
	?*?@param?url?the?URL?address
	?*?@return?the?encoding?in?upper?case
	?*?@throws?IOException
	?*?@throws?MalformedURLException
	?*/
	public?String?detect（String?url）?throws?MalformedURLException?IOException?{

		//?Work?with?the?configured?proxy:
		Charset?charset?=?null;

		charset?=?detector.detectCodepage（new?URL（url））;
		if（charset?==?null）{
			return?null;
		}
		else{
			//?Open?the?document?in?the?given?code?page:
			//java.io.Reader?reader?=?new?java.io.InputStreamReader（new?java.io.FileInputStream（document）charset）;
			//?Read?from?it?do?sth.?whatever?you?desire.?The?character?are?now?-?hopefully?-?correct..
			return?charset.name（）.toUpperCase（）;
		}
	}

	public?String?detectFromRaw（String?raw?String?encoding）?throws?IOException?{

		//?Work?with?the?configured?proxy:
		Charset?charset?=?null;
		InputStream?is;
		byte[]?bs;

		//?convert?String?to?inputstream
		try?{
			if?（encoding?==?null）
				bs?=?raw.getBytes（）;
			else
				bs?=?raw.getBytes（encoding）;
????????????is?=?new?ByteArrayInputStream（bs）;

????		charset?=?detector.detectCodepage（is?bs.length）;
????		if（charset?==?null）{
????			return?null;
????		}?else{
????			//?Open?the?document?in?the?given?code?page:
????			//java.io.Reader?reader?=?new?java.io.InputStreamReader（new?java.io.FileInputStream（document）charset）;
????			//?Read?from?it?do?sth.?whatever?you?desire.?The?character?are?now?-?hopefully?-?correct..
????			return?charset.name（）;
????		}
????????}?catch?（UnsupportedEncodingException?e）?{
????????????e.printStackTrace（）;
????????}
????????return?null;

	}

	/**
	?*?List?the?supported?encoding?on?your?system.?For?debugging?and?coding.
	?*/
	public?static?void?supporte