u.java

经过反编译和部分代码修改后的ultraimpro java源代码。可在netbean环境下成功编译。供学习和分析用。

// Decompiled by DJ v3.9.9.91 Copyright 2005 Atanas Neshkov  Date: 2006-5-1 19:31:43
// Home Page : http://members.fortunecity.com/neshkov/dj.html  - Check often for new version!
// Decompiler options: packimports(3) 


public final class u
{

    public u()
    {
    }

    public static final String a(String s)
    {
        boolean flag = false;
        StringBuffer stringbuffer = new StringBuffer();
        int i = s.length();
        char c;
        for(int j = 0; j < i;)
            if((c = s.charAt(j)) == '%')
            {
                try
                {
                    byte abyte0[] = new byte[(i - j) / 3];
                    int k = 0;
                    do
                    {
                        if(j + 2 >= i || c != '%')
                            break;
                        abyte0[k++] = (byte)Integer.parseInt(s.substring(j + 1, j + 3), 16);
                        if((j += 3) < i)
                            c = s.charAt(j);
                    } while(true);
                    if(j < i && c == '%')
                        throw new IllegalArgumentException("URLDecoder: Incomplete trailing escape (%) pattern");
                    stringbuffer.append(new String(abyte0, 0, k));
                }
                catch(Exception _ex) { }
                flag = true;
            } else
            {
                stringbuffer.append(c);
                j++;
            }

        if(flag)
            return stringbuffer.toString();
        else
            return s;
    }

    public static final String b(String s)
    {
        boolean flag = false;
        StringBuffer stringbuffer = new StringBuffer();
        int i = (s = s.trim()).length();
        for(int j = 0; j < i; j++)
        {
            char c;
            if((c = s.charAt(j)) == ' ')
            {
                stringbuffer.append("%20");
                flag = true;
                continue;
            }
            if(c == '%')
            {
                stringbuffer.append("%25");
                flag = true;
            } else
            {
                stringbuffer.append(c);
            }
        }

        if(flag)
            return stringbuffer.toString();
        else
            return s;
    }

    public static final String a(String s, int i)
    {
        if(s == null)
            return null;
        boolean flag = false;
        StringBuffer stringbuffer = new StringBuffer();
        int j = (s = s.trim()).length();
        int k = 0;
        if(i == 1)
        {
            flag = true;
            stringbuffer.append("%21%0a");
        }
        for(; k < j; k++)
        {
            char c = s.charAt(k);
            if(i == 1)
                c ^= 'U';
            if(c >= '0' && c <= '9')
            {
                stringbuffer.append(c);
                continue;
            }
            if(c >= 'a' && c <= 'z' || c >= 'A' && c <= 'Z')
            {
                stringbuffer.append(c);
                continue;
            }
            flag = true;
            String s1;
            if((s1 = Integer.toHexString(c)).length() == 1)
                s1 = "0" + s1;
            stringbuffer.append("%" + s1);
        }

        if(i == 1)
            stringbuffer.append("%21");
        if(flag)
            return stringbuffer.toString();
        else
            return s;
    }
}