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/************************************************************************
*
* 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.wordsmith;
import java.io.IOException;
import org.w3c.dom.Node;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Element;
import org.openoffice.xmerge.Document;
import org.openoffice.xmerge.ConverterCapabilities;
import org.openoffice.xmerge.converter.xml.OfficeDocument;
import org.openoffice.xmerge.converter.xml.sxw.SxwDocument;
import org.openoffice.xmerge.converter.xml.*;
/**
* <p>This class represents a font table in a WordSmith document.
* A font table is represented as follows:</p>
*
* <p><blockquote>
* binary "3"<br>
* two-byte length of the table of strings which follows<br>
* string table (null-terminated strings) representing font names
* </blockquote></p>
*
* @author David Proulx
*/
class WseFontTable extends Wse {
java.util.Vector fontNames = new java.util.Vector(10);
/**
* Constructor for use when going from DOM to WordSmith.
*/
public WseFontTable() {
}
/**
* Constructor for use when going from WordSmith to DOM.
*
* @param dataArray <code>byte</code> array.
* @param i The index.
*/
public WseFontTable(byte dataArray[], int i) {
i++;
int tableLen = ((dataArray[i] << 8) | (dataArray[i+1] & 0xFF));
i += 2;
while (tableLen > 0) {
int j = 0;
while (dataArray[i + j] != 0) j++;
fontNames.add(new String(dataArray, i, j));
tableLen -= (j + 1);
i += (j + 1);
}
}
/**
* Add a new font to the table.
*
* @param newFontName The new font name.
*/
public void add(String newFontName) {
if (newFontName != null)
fontNames.add(newFontName);
}
/**
* Return a font name from the table, or null if invalid index.
*
* @param index The font name index.
*
* @return The font name.
*/
public String getFontName(int index) {
try {
return (String)fontNames.elementAt(index);
} catch (ArrayIndexOutOfBoundsException e) {
return null;
}
}
/**
* Return the index of a font name in the table, or -1 if not found.
*
* @param fontName The font name.
*
* @return The index of the font name, or -1 if not found.
*/
public int getFontIndex(String fontName) {
int len = fontNames.size();
for (int i = 0; i < len; i++) {
String name = (String) fontNames.elementAt(i);
if (name.equals(fontName))
return i;
}
return -1;
}
/**
* Compute the index of the first <code>byte</code> following the
* paragraph descriptor, assuming that
* <code>dataArray[startIndex]</code> is the beginning of a valid
* paragraph descriptor.
*
* @param dataArray <code>byte</code> array.
* @param startIndex The start index.
*
* @return The index of the first <code>byte</code> following the
* paragraph description.
*/
static int computeNewIndex(byte dataArray[], int startIndex) {
startIndex++; // Skip the leading "3"
int tableLen = ((dataArray[startIndex] << 8) | (dataArray[startIndex+1] & 0xFF));
tableLen &= 0xFFFF; // eliminate problems with sign-extension
return startIndex + tableLen + 2;
}
/**
* Return true if <code>dataArray[startIndex]</code> is the start of a
* valid paragraph descriptor.
*
* @param dataArray <code>byte</code> string.
* @param startIndex Start index.
*
* @return true if <code>dataArray[startIndex]</code> is the start
* of a valid paragraph descriptor, false otherwise.
*/
static boolean isValid(byte dataArray[], int startIndex) {
try {
if (dataArray[startIndex] != 3)
return false;
int len = ((dataArray[startIndex+1] << 8)
| (dataArray[startIndex+2] & 0xFF));
len &= 0xFFFF; // eliminate problems with sign-extension
if (dataArray[startIndex + len + 2] != 0)
return false;
} catch (ArrayIndexOutOfBoundsException e) {
return false;
}
return true;
}
/**
* Return the number of bytes needed to represent this font table.
*
* @return The number of bytes needed to represent this font table.
*/
int getByteCount() {
int length = 3; // leading "3" plus 2 bytes for length.
int nFonts = fontNames.size();
for (int i = 0; i < nFonts; i++) {
String name = (String)fontNames.elementAt(i);
length += name.length() + 1; // extra byte is for trailing "0"
}
return length;
}
/**
* Return a <code>byte</code> array representing this font table.
*
* @return An <code>byte</code> array representing this font table.
*/
byte[] getBytes() {
int length = getByteCount();
int nFonts = fontNames.size();
byte b[] = new byte[length];
b[0] = 3;
length -= 3;
b[1] = (byte)(length >> 8);
b[2] = (byte)(length & 0xFF);
int indx = 3;
for (int i = 0; i < nFonts; i++) {
String name = (String)fontNames.elementAt(i);
byte bname[] = name.getBytes();
System.arraycopy(bname, 0, b, indx, bname.length);
indx += bname.length;
b[indx++] = 0;
}
return b;
}
}
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