001: /*
002:
003: ============================================================================
004: The Apache Software License, Version 1.1
005: ============================================================================
006:
007: Copyright (C) 2000 The Apache Software Foundation. All rights reserved.
008:
009: Redistribution and use in source and binary forms, with or without modifica-
010: tion, are permitted provided that the following conditions are met:
011:
012: 1. Redistributions of source code must retain the above copyright notice,
013: this list of conditions and the following disclaimer.
014:
015: 2. Redistributions in binary form must reproduce the above copyright notice,
016: this list of conditions and the following disclaimer in the documentation
017: and/or other materials provided with the distribution.
018:
019: 3. The end-user documentation included with the redistribution, if any, must
020: include the following acknowledgment: "This product includes software
021: developed by the Apache Software Foundation (http://www.apache.org/)."
022: Alternately, this acknowledgment may appear in the software itself, if
023: and wherever such third-party acknowledgments normally appear.
024:
025: 4. The names "Cocoon" and "Apache Software Foundation" must not be used to
026: endorse or promote products derived from this software without prior
027: written permission. For written permission, please contact
028: apache@apache.org.
029:
030: 5. Products derived from this software may not be called "Apache", nor may
031: "Apache" appear in their name, without prior written permission of the
032: Apache Software Foundation.
033:
034: THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
035: INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
036: FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
037: APACHE SOFTWARE FOUNDATION OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
038: INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLU-
039: DING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
040: OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
041: ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
042: (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
043: THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
044:
045: This software consists of voluntary contributions made by many individuals
046: on behalf of the Apache Software Foundation and was originally created by
047: Stefano Mazzocchi <stefano@apache.org>. For more information on the Apache
048: Software Foundation, please see <http://www.apache.org/>.
049:
050: */
051:
052: package org.ozoneDB.xml.util;
053:
054: import java.io.OutputStream;
055: import java.io.IOException;
056: import java.io.UTFDataFormatException;
057: import java.io.Serializable;
058:
059: import java.util.HashMap;
060:
061: /**
062: * @author <a href="mailto:stefano@apache.org">Stefano Mazzocchi</a>, modifications
063: * for Ozone by <a href="mailto:conny@smb-tec.com">Conny Krappatsch</a>
064: */
065: final class CompiledXMLOutputStream extends OutputStream implements
066: Serializable {
067:
068: private static final boolean COMPRESS = true;
069:
070: private final OutputStream out;
071: private final HashMap map = new HashMap();
072: private int indexCount = 0;
073:
074: public CompiledXMLOutputStream(OutputStream out) throws IOException {
075: this .out = out;
076: }
077:
078: public final void writeEvent(int event) throws IOException {
079: this .out.write(event);
080: }
081:
082: public final void writeAttributes(int attributes)
083: throws IOException {
084: OutputStream out = this .out;
085: out.write(attributes >>> 8 & 0xFF);
086: out.write(attributes & 0xFF);
087: // out.write( attributes >>> 0 & 0xFF );
088: }
089:
090: public final void writeString(String str) throws IOException {
091: Integer index;
092:
093: if (CompiledXMLOutputStream.COMPRESS) {
094: index = (Integer) map.get(str);
095: } else {
096: index = null;
097: }
098:
099: if (index == null) {
100: int length = str.length();
101: if (CompiledXMLOutputStream.COMPRESS) {
102: map.put(str, new Integer(indexCount++));
103: // System.out.println( "index=" + indexCount + ", str=" + str);
104: }
105: if (length > 2 << 15) {
106: throw new IOException(
107: "String cannot be bigger than 32K");
108: }
109: this .writeChars(str.toCharArray(), 0, length);
110: } else {
111: int i = index.intValue();
112: this .out.write(i >>> 8 & 0xFF | 0x80);
113: this .out.write(i & 0xFF);
114: }
115: }
116:
117: public final void writeChars(char[] ch, int start, int length)
118: throws IOException {
119: int utflen = 0;
120: int c;
121: int count = 0;
122: int end = start + length;
123:
124: /* looks strange but is fast */
125: for (int i = start; i < end; i++) {
126: c = ch[i];
127: utflen += (c >= 0x0001 && c <= 0x007F) ? 1
128: : (c > 0x07FF) ? 3 : 2;
129: }
130:
131: if (utflen > 65535) {
132: throw new UTFDataFormatException();
133: }
134:
135: byte[] bytearr = new byte[utflen + 2];
136: bytearr[count++] = (byte) (utflen >>> 8 & 0xFF);
137: bytearr[count++] = (byte) (utflen >>> 0 & 0xFF);
138: for (int i = start; i < end; i++) {
139: c = ch[i];
140: if (c >= 0x0001 && c <= 0x007F) {
141: bytearr[count++] = (byte) c;
142: } else if (c > 0x07FF) {
143: bytearr[count++] = (byte) (0xE0 | c >> 12 & 0x0F);
144: bytearr[count++] = (byte) (0x80 | c >> 6 & 0x3F);
145: bytearr[count++] = (byte) (0x80 | c >> 0 & 0x3F);
146: } else {
147: bytearr[count++] = (byte) (0xC0 | c >> 6 & 0x1F);
148: bytearr[count++] = (byte) (0x80 | c >> 0 & 0x3F);
149: }
150: }
151:
152: this .out.write(bytearr, 0, count);
153: }
154:
155: public final void write(int c) throws IOException {
156: this.out.write(c);
157: }
158: }
|