/* 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.wap;import java.io.*;import java.util.*;import org.xmlpull.v1.*;// TODO: make some of the "direct" WBXML token writing methods public??/**  * A class for writing WBXML.  *   */public class WbxmlSerializer implements XmlSerializer {    Hashtable stringTable = new Hashtable();    OutputStream out;    ByteArrayOutputStream buf = new ByteArrayOutputStream();    ByteArrayOutputStream stringTableBuf = new ByteArrayOutputStream();    String pending;    int depth;    String name;    String namespace;    Vector attributes = new Vector();    Hashtable attrStartTable = new Hashtable();    Hashtable attrValueTable = new Hashtable();    Hashtable tagTable = new Hashtable();	private int attrPage;	private int tagPage;    public XmlSerializer attribute(String namespace, String name, String value) {        attributes.addElement(name);        attributes.addElement(value);        return this;    }    public void cdsect (String cdsect) throws IOException{        text (cdsect);    }    /* silently ignore comment */    public void comment (String comment) {    }        public void docdecl (String docdecl) {        throw new RuntimeException ("Cannot write docdecl for WBXML");    }    public void entityRef (String er) {        throw new RuntimeException ("EntityReference not supported for WBXML");    }        public int getDepth() {    	return depth;    }    public boolean getFeature (String name) {        return false;    }    	public String getNamespace() {		throw new RuntimeException("NYI");	}		public String getName() {		throw new RuntimeException("NYI");	}		public String getPrefix(String nsp, boolean create) {        throw new RuntimeException ("NYI");    }            public Object getProperty (String name) {        return null;    }    public void ignorableWhitespace (String sp) {    }        public void endDocument() throws IOException {        writeInt(out, stringTableBuf.size());        // write StringTable        out.write(stringTableBuf.toByteArray());        // write buf         out.write(buf.toByteArray());        // ready!        out.flush();    }    /** ATTENTION: flush cannot work since Wbxml documents require    need buffering. Thus, this call does nothing. */    public void flush() {    }    public void checkPending(boolean degenerated) throws IOException {        if (pending == null)            return;        int len = attributes.size();        int[] idx = (int[]) tagTable.get(pending);        // if no entry in known table, then add as literal        if (idx == null) {            buf.write(                len == 0                    ? (degenerated ? Wbxml.LITERAL : Wbxml.LITERAL_C)                    : (degenerated ? Wbxml.LITERAL_A : Wbxml.LITERAL_AC));            writeStrT(pending);        }        else {        	if(idx[0] != tagPage){        		tagPage=idx[0];        		buf.write(0);        		buf.write(tagPage);        	}        	            buf.write(                len == 0                    ? (degenerated ? idx[1] : idx[1] | 64)                    : (degenerated                        ? idx[1] | 128                        : idx[1] | 192));        }        for (int i = 0; i < len;) {            idx = (int[]) attrStartTable.get(attributes.elementAt(i));                        if (idx == null) {                buf.write(Wbxml.LITERAL);                writeStrT((String) attributes.elementAt(i));            }            else {				if(idx[0] != attrPage){					attrPage = idx[1];					buf.write(0);					buf.write(attrPage);									}                buf.write(idx[1]);            }            idx = (int[]) attrValueTable.get(attributes.elementAt(++i));            if (idx == null) {                buf.write(Wbxml.STR_I);                writeStrI(buf, (String) attributes.elementAt(i));            }            else {				if(idx[0] != attrPage){					attrPage = idx[1];					buf.write(0);					buf.write(attrPage);									}                buf.write(idx[1]);            }            ++i;        }        if (len > 0)            buf.write(Wbxml.END);        pending = null;        attributes.removeAllElements();    }    public void processingInstruction(String pi) {        throw new RuntimeException ("PI NYI");    }    public void setFeature(String name, boolean value) {        throw new IllegalArgumentException ("unknown feature "+name);    }            public void setOutput (Writer writer) {        throw new RuntimeException ("Wbxml requires an OutputStream!");    }    public void setOutput (OutputStream out, String encoding) throws IOException {                if (encoding != null) throw new IllegalArgumentException ("encoding not yet supported for WBXML");                this.out = out;        buf = new ByteArrayOutputStream();        stringTableBuf = new ByteArrayOutputStream();        // ok, write header     }    public void setPrefix(String prefix, String nsp) {        throw new RuntimeException("NYI");    }    public void setProperty(String property, Object value) {        throw new IllegalArgumentException ("unknown property "+property);    }        public void startDocument(String s, Boolean b) throws IOException{        out.write(0x01); // version        out.write(0x01); // unknown or missing public identifier        out.write(0x04); // iso-8859-1    }    public XmlSerializer startTag(String namespace, String name) throws IOException {        if (namespace != null && !"".equals(namespace))             throw new RuntimeException ("NSP NYI");        //current = new State(current, prefixMap, name);        checkPending(false);        pending = name;		depth++;		        return this;    }    public XmlSerializer text(char[] chars, int start, int len) throws IOException {        checkPending(false);        buf.write(Wbxml.STR_I);        writeStrI(buf, new String(chars, start, len));        return this;    }    public XmlSerializer text(String text) throws IOException {        checkPending(false);        buf.write(Wbxml.STR_I);        writeStrI(buf, text);        return this;    }            public XmlSerializer endTag(String namespace, String name) throws IOException {//        current = current.prev;        if (pending != null)            checkPending(true);        else            buf.write(Wbxml.END);		depth--;        return this;    }    /** currently ignored! */    public void writeLegacy(int type, String data) {    }    // ------------- internal methods --------------------------    static void writeInt(OutputStream out, int i) throws IOException {        byte[] buf = new byte[5];        int idx = 0;        do {            buf[idx++] = (byte) (i & 0x7f);            i = i >> 7;        }        while (i != 0);        while (idx > 1) {            out.write(buf[--idx] | 0x80);        }        out.write(buf[0]);    }    static void writeStrI(OutputStream out, String s) throws IOException {        for (int i = 0; i < s.length(); i++) {            out.write((byte) s.charAt(i));        }        out.write(0);    }    void writeStrT(String s) throws IOException {        Integer idx = (Integer) stringTable.get(s);        if (idx == null) {            idx = new Integer(stringTableBuf.size());            stringTable.put(s, idx);            writeStrI(stringTableBuf, s);            stringTableBuf.flush();        }        writeInt(buf, idx.intValue());    }    /**      * Sets the tag table for a given page.     * The first string in the array defines tag 5, the second tag 6 etc.     */        public void setTagTable(int page, String[] tagTable) {        // clear entries in tagTable!		if (page != 0)			return;        for (int i = 0; i < tagTable.length; i++) {            if (tagTable[i] != null) {                Object idx = new int[]{page, i+5};                this.tagTable.put(tagTable[i], idx);            }        }    }    /**      * Sets the attribute start Table for a given page.     * The first string in the array defines attribute      * 5, the second attribute 6 etc.     *  Please use the      *  character '=' (without quote!) as delimiter      *  between the attribute name and the (start of the) value      */    public void setAttrStartTable(int page, String[] attrStartTable) {                for (int i = 0; i < attrStartTable.length; i++) {            if (attrStartTable[i] != null) {                Object idx = new int[] {page, i + 5};                this.attrStartTable.put(attrStartTable[i], idx);            }        }    }    /**      * Sets the attribute value Table for a given page.     * The first string in the array defines attribute value 0x85,      * the second attribute value 0x86 etc.     */    public void setAttrValueTable(int page, String[] attrValueTable) {        // clear entries in this.table!        for (int i = 0; i < attrValueTable.length; i++) {            if (attrValueTable[i] != null) {                Object idx = new int[]{page, i + 0x085};                this.attrValueTable.put(attrValueTable[i], idx);            }        }    }}