xcorrectinghtmlwriter.java

来自「java写的浏览器」· Java 代码 · 共 78 行

/****************************************************************
*              XBrowser  -  eXtended web Browser                *
*                                                               *
*           Copyright (c) 2000-2001  Armond Avanes              *
*     Refer to ReadMe & License files for more information      *
*                                                               *
*                                                               *
*                 By: Uladzimir V. Kavalchuk                    *
*               [e-mail]                 *
*               http://xbrowser.sourceforge.net/                *
*****************************************************************/
package xbrowser.renderer.custom;

import java.io.*;

/** Filter (bad) HTMLWriter's output to restore &#num; symbols.
 *  Used by XHTMLEditorKit for saving file.
 *   @since 3.7
 *   @author wwk
 */
public class XCorrectingHTMLWriter extends FilterWriter
{
    public XCorrectingHTMLWriter(Writer out)
    {
        super(out);
    }

    /** I looked at HTMLWriter implementation -- this method used that way. */
    public void write(char cbuf[], int off, int len) throws IOException
    {
        if( lastWasStart)
        {
            lastWasStart = false;

        char c = convertToInteger(cbuf);

            if( c != 160)
                out.write(c);
            else
                out.write(" "); // This must go as is.

            ignoreSemicolon = true;
        }
        else if( len == 2 && cbuf[0] == '&' && cbuf[1] == '#')
            lastWasStart = true;
        else
        {
            if( ! ignoreSemicolon || len != 1 || cbuf[0] != ';')
                out.write(cbuf, off, len);
            ignoreSemicolon = false;
        }
    }

    private char convertToInteger(char []buf)
    {
	int i = 0;
	int v = 0;
	int len = buf.length;
	char c;

        do
        {
            c = buf[i];
            if( ! Character.isDigit( c))
                break;
            v *= 10;
            v += Character.digit( c, 10);
        }
        while( ++i < len);

        return (char) v;
    }

// Attributes:
    private boolean lastWasStart = false;
    private boolean ignoreSemicolon = false;
}