derprintablestring.java

java 文件下载器。可自定义

// Decompiled by Jad v1.5.8e2. Copyright 2001 Pavel Kouznetsov.
// Jad home page: http://kpdus.tripod.com/jad.html
// Decompiler options: packimports(3) fieldsfirst ansi space 
// Source File Name:   DERPrintableString.java

package org.bouncycastle.asn1;

import java.io.IOException;

// Referenced classes of package org.bouncycastle.asn1:
//			ASN1Object, ASN1OctetString, ASN1TaggedObject, DEROutputStream, 
//			DERString, DERObject

public class DERPrintableString extends ASN1Object
	implements DERString
{

	String string;

	public static DERPrintableString getInstance(Object obj)
	{
		if (obj == null || (obj instanceof DERPrintableString))
			return (DERPrintableString)obj;
		if (obj instanceof ASN1OctetString)
			return new DERPrintableString(((ASN1OctetString)obj).getOctets());
		if (obj instanceof ASN1TaggedObject)
			return getInstance(((ASN1TaggedObject)obj).getObject());
		else
			throw new IllegalArgumentException((new StringBuilder()).append("illegal object in getInstance: ").append(obj.getClass().getName()).toString());
	}

	public static DERPrintableString getInstance(ASN1TaggedObject obj, boolean explicit)
	{
		return getInstance(obj.getObject());
	}

	public DERPrintableString(byte string[])
	{
		char cs[] = new char[string.length];
		for (int i = 0; i != cs.length; i++)
			cs[i] = (char)(string[i] & 0xff);

		this.string = new String(cs);
	}

	public DERPrintableString(String string)
	{
		this(string, false);
	}

	public DERPrintableString(String string, boolean validate)
	{
		if (validate && !isPrintableString(string))
		{
			throw new IllegalArgumentException("string contains illegal characters");
		} else
		{
			this.string = string;
			return;
		}
	}

	public String getString()
	{
		return string;
	}

	public byte[] getOctets()
	{
		char cs[] = string.toCharArray();
		byte bs[] = new byte[cs.length];
		for (int i = 0; i != cs.length; i++)
			bs[i] = (byte)cs[i];

		return bs;
	}

	void encode(DEROutputStream out)
		throws IOException
	{
		out.writeEncoded(19, getOctets());
	}

	public int hashCode()
	{
		return getString().hashCode();
	}

	boolean asn1Equals(DERObject o)
	{
		if (!(o instanceof DERPrintableString))
		{
			return false;
		} else
		{
			DERPrintableString s = (DERPrintableString)o;
			return getString().equals(s.getString());
		}
	}

	public String toString()
	{
		return string;
	}

	public static boolean isPrintableString(String str)
	{
		int i = str.length() - 1;
		do
			if (i >= 0)
			{
				char ch = str.charAt(i);
				if (ch > '\177')
					return false;
				if (('a' > ch || ch > 'z') && ('A' > ch || ch > 'Z') && ('0' > ch || ch > '9'))
					switch (ch)
					{
					case 33: // '!'
					case 34: // '"'
					case 35: // '#'
					case 36: // '$'
					case 37: // '%'
					case 38: // '&'
					case 42: // '*'
					case 48: // '0'
					case 49: // '1'
					case 50: // '2'
					case 51: // '3'
					case 52: // '4'
					case 53: // '5'
					case 54: // '6'
					case 55: // '7'
					case 56: // '8'
					case 57: // '9'
					case 59: // ';'
					case 60: // '<'
					case 62: // '>'
					default:
						return false;

					case 32: // ' '
					case 39: // '\''
					case 40: // '('
					case 41: // ')'
					case 43: // '+'
					case 44: // ','
					case 45: // '-'
					case 46: // '.'
					case 47: // '/'
					case 58: // ':'
					case 61: // '='
					case 63: // '?'
						break;
					}
				i--;
			} else
			{
				return true;
			}
		while (true);
	}
}