/* Copyright (c) 2002,2003, Stefan Haustein, Oberhausen, Rhld., Germany * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or * sell copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The  above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS * IN THE SOFTWARE. */ package org.kxml2.io;import java.io.*;import org.xmlpull.v1.*;public class KXmlSerializer implements XmlSerializer {    //    static final String UNDEFINED = ":";    private Writer writer;    private boolean pending;    private int auto;    private int depth;    private String[] elementStack = new String[12];    //nsp/prefix/name    private int[] nspCounts = new int[4];    private String[] nspStack = new String[8];    //prefix/nsp; both empty are ""    private boolean[] indent = new boolean[4];    private boolean unicode;    private String encoding;    private final void check(boolean close) throws IOException {        if (!pending)            return;        depth++;        pending = false;        if (indent.length <= depth) {            boolean[] hlp = new boolean[depth + 4];            System.arraycopy(indent, 0, hlp, 0, depth);            indent = hlp;        }        indent[depth] = indent[depth - 1];        for (int i = nspCounts[depth - 1];            i < nspCounts[depth];            i++) {            writer.write(' ');            writer.write("xmlns");            if (!"".equals(nspStack[i * 2])) {                writer.write(':');                writer.write(nspStack[i * 2]);            }            else if ("".equals(getNamespace()) && !"".equals(nspStack[i * 2 + 1]))                throw new IllegalStateException("Cannot set default namespace for elements in no namespace");            writer.write("=\"");            writeEscaped(nspStack[i * 2 + 1], '"');            writer.write('"');        }        if (nspCounts.length <= depth + 1) {            int[] hlp = new int[depth + 8];            System.arraycopy(nspCounts, 0, hlp, 0, depth + 1);            nspCounts = hlp;        }        nspCounts[depth + 1] = nspCounts[depth];        //   nspCounts[depth + 2] = nspCounts[depth];        writer.write(close ? " />" : ">");    }    private final void writeEscaped(String s, int quot)        throws IOException {        for (int i = 0; i < s.length(); i++) {            char c = s.charAt(i);            switch (c) {            	case '\n':            	case '\r':            	case '\t':            		if(quot == -1)             			writer.write(c);            		else             			writer.write("&#"+((int) c)+';');            		break;                case '&' :                    writer.write("&amp;");                    break;                case '>' :                    writer.write("&gt;");                    break;                case '<' :                    writer.write("&lt;");                    break;                case '"' :                case '\'' :                    if (c == quot) {                        writer.write(                            c == '"' ? "&quot;" : "&apos;");                        break;                    }                default :                	//if(c < ' ')					//	throw new IllegalArgumentException("Illegal control code:"+((int) c));                    if (c >= ' ' && c !='@' && (c < 127 || unicode))                        writer.write(c);                    else                        writer.write("&#" + ((int) c) + ";");            }        }    }    /*    	private final void writeIndent() throws IOException {    		writer.write("\r\n");    		for (int i = 0; i < depth; i++)    			writer.write(' ');    	}*/    public void docdecl(String dd) throws IOException {        writer.write("<!DOCTYPE");        writer.write(dd);        writer.write(">");    }    public void endDocument() throws IOException {        while (depth > 0) {            endTag(                elementStack[depth * 3 - 3],                elementStack[depth * 3 - 1]);        }        flush();    }    public void entityRef(String name) throws IOException {        check(false);        writer.write('&');        writer.write(name);        writer.write(';');    }    public boolean getFeature(String name) {        //return false;        return (            "http://xmlpull.org/v1/doc/features.html#indent-output"                .equals(                name))            ? indent[depth]            : false;    }    public String getPrefix(String namespace, boolean create) {        try {            return getPrefix(namespace, false, create);        }        catch (IOException e) {            throw new RuntimeException(e.toString());        }    }    private final String getPrefix(        String namespace,        boolean includeDefault,        boolean create)        throws IOException {        for (int i = nspCounts[depth + 1] * 2 - 2;            i >= 0;            i -= 2) {            if (nspStack[i + 1].equals(namespace)                && (includeDefault || !nspStack[i].equals(""))) {                String cand = nspStack[i];                for (int j = i + 2;                    j < nspCounts[depth + 1] * 2;                    j++) {                    if (nspStack[j].equals(cand)) {                        cand = null;                        break;                    }                }                if (cand != null)                    return cand;            }        }        if (!create)            return null;        String prefix;        if ("".equals(namespace))            prefix = "";        else {            do {                prefix = "n" + (auto++);                for (int i = nspCounts[depth + 1] * 2 - 2;                    i >= 0;                    i -= 2) {                    if (prefix.equals(nspStack[i])) {                        prefix = null;                        break;                    }                }            }            while (prefix == null);        }		boolean p = pending;		pending = false;        setPrefix(prefix, namespace);        pending = p;        return prefix;    }    public Object getProperty(String name) {        throw new RuntimeException("Unsupported property");    }    public void ignorableWhitespace(String s)        throws IOException {        text(s);    }    public void setFeature(String name, boolean value) {        if ("http://xmlpull.org/v1/doc/features.html#indent-output"            .equals(name)) {            indent[depth] = value;        }        else            throw new RuntimeException("Unsupported Feature");    }    public void setProperty(String name, Object value) {        throw new RuntimeException(            "Unsupported Property:" + value);    }    public void setPrefix(String prefix, String namespace)        throws IOException {        check(false);        if (prefix == null)            prefix = "";        if (namespace == null)            namespace = "";        String defined = getPrefix(namespace, true, false);        // boil out if already defined        if (prefix.equals(defined))            return;        int pos = (nspCounts[depth + 1]++) << 1;        if (nspStack.length < pos + 1) {