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Diffstat (limited to 'xmerge/source/aportisdoc/java/org/openoffice/xmerge/converter/xml/sxw/aportisdoc/DocEncoder.java')
| -rw-r--r-- | xmerge/source/aportisdoc/java/org/openoffice/xmerge/converter/xml/sxw/aportisdoc/DocEncoder.java | 213 |
1 files changed, 213 insertions, 0 deletions
diff --git a/xmerge/source/aportisdoc/java/org/openoffice/xmerge/converter/xml/sxw/aportisdoc/DocEncoder.java b/xmerge/source/aportisdoc/java/org/openoffice/xmerge/converter/xml/sxw/aportisdoc/DocEncoder.java new file mode 100644 index 000000000000..b1cb1cbe9905 --- /dev/null +++ b/xmerge/source/aportisdoc/java/org/openoffice/xmerge/converter/xml/sxw/aportisdoc/DocEncoder.java @@ -0,0 +1,213 @@ +/************************************************************************* + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * Copyright 2000, 2010 Oracle and/or its affiliates. + * + * OpenOffice.org - a multi-platform office productivity suite + * + * This file is part of OpenOffice.org. + * + * OpenOffice.org is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 3 + * only, as published by the Free Software Foundation. + * + * OpenOffice.org is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License version 3 for more details + * (a copy is included in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU Lesser General Public License + * version 3 along with OpenOffice.org. If not, see + * <http://www.openoffice.org/license.html> + * for a copy of the LGPLv3 License. + * + ************************************************************************/ + +package org.openoffice.xmerge.converter.xml.sxw.aportisdoc; + +import java.io.ByteArrayOutputStream; +import java.io.DataOutputStream; +import java.io.IOException; +import java.util.List; +import java.util.ArrayList; + +import org.openoffice.xmerge.converter.palm.Record; + +/** + * This class is used by {@link + * org.openoffice.xmerge.converter.xml.sxw.DocumentSerializerImpl + * DocumentSerializerImpl} to encode the AportisDoc format. + * It does not deal with any XML tags. It only knows how to encode + * from <code>String</code>. + * + * @author Herbie Ong + */ +final class DocEncoder implements DocConstants { + + /** Text buffer to contain text section. */ + private StringBuffer textBuffer = null; + + /** Length of text section. */ + private int textLen = 0; + + /** Number of text records. */ + private int textRecCount = 0; + + + /** + * Default constructor creates a header and + * a text buffer for holding all the text in + * the AportisDoc database. + */ + DocEncoder() { + + textBuffer = new StringBuffer(TEXT_RECORD_SIZE); + } + + + /** + * This method appends text into the text section of + * the AportisDoc database. + * + * @param text <code>String</code> to append. + */ + void addText(String text) { + + textBuffer.append(text); + } + + + /** + * This method appends text into the text section of + * the AportisDoc database. + * + * @param text <code>char</code> array to append. + */ + void addText(char[] text) { + + textBuffer.append(text); + } + + + /** + * This method appends text character into the text + * section of the AportisDoc database. + * + * @param text <code>char</code> to append. + */ + void addText(char text) { + + textBuffer.append(text); + } + + + /** + * This method encodes the information given to a + * palm <code>Record</code> array in the AportisDoc + * database format. + * + * @return <code>Record</code> array holding AportisDoc + * contents. + * + * @throws IOException If any I/O error occurs. + */ + Record[] getRecords() throws IOException { + + byte textBytes[] = processTextBuffer(); + textLen = textBytes.length; + textRecCount = (short) (textBytes.length / TEXT_RECORD_SIZE); + + // recBytes to hold a record of bytes at a time + byte recBytes[] = new byte[TEXT_RECORD_SIZE]; + int pos = 0; + + List textRecords = new ArrayList(textRecCount + 1); + + // split textBytes into chunks of Record objects + // and store in textRecords object. + for (int i = 0; i < textRecCount; i++) { + + System.arraycopy(textBytes, pos, recBytes, 0, recBytes.length); + pos += recBytes.length; + Record zRec = new Record(recBytes); + textRecords.add(zRec); + } + + // there's more if ... + + if (pos < textLen) { + + textRecCount++; + + recBytes = new byte[textLen - pos]; + System.arraycopy(textBytes, pos, recBytes, 0, recBytes.length); + Record rec = new Record(recBytes); + textRecords.add(rec); + } + + // construct the Record array and copy + // references from textRecords. + + Record[] allRecords = new Record[textRecords.size() + 1]; + + allRecords[0] = new Record(getHeaderBytes()); + + for (int i = 1; i < allRecords.length; i++) { + + allRecords[i] = (Record) textRecords.get(i-1); + } + + return allRecords; + } + + + /** + * This method converts the text buffer into a <code>byte</code> + * array with the proper encoding of the text section of the + * AportisDoc format. + * + * TODO: do compression. + * + * @return byte[] Converted <code>byte</code> array of text + * section. + * + * @throws IOException If any I/O error occurs. + */ + private byte[] processTextBuffer() throws IOException + { + String str = textBuffer.toString(); + byte bytes[] = str.getBytes(ENCODING); + + return bytes; + } + + + /** + * This method produces the <code>byte</code> array for the header. + * + * @return <code>byte</code> array containing header record data. + * + * @throws IOException If any I/O error occurs. + */ + private byte[] getHeaderBytes() throws IOException + { + ByteArrayOutputStream bos = new ByteArrayOutputStream(); + DataOutputStream dos = new DataOutputStream(bos); + + // TODO: for now, we shall use UNCOMPRESSED. + // later, we need to use COMPRESSED or a setting. + dos.writeShort(UNCOMPRESSED); + dos.writeShort(SPARE); + dos.writeInt(textLen); + dos.writeShort(textRecCount); + dos.writeShort(TEXT_RECORD_SIZE); + dos.writeInt(SPARE); + + byte[] bytes = bos.toByteArray(); + + return bytes; + } +} + |