/*
* AppleCommander - An Apple ][ image utility.
* Copyright (C) 2002 by Robert Greene
* robgreene at users.sourceforge.net
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* This program 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 General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package com.webcodepro.applecommander.storage;
import java.io.ByteArrayOutputStream;
import java.io.PrintWriter;
import java.text.SimpleDateFormat;
import java.util.Date;
/**
* Extract the contents of an AWP (AppleWorks word processor) document and
* convert to a text format.
* See format documentation at:
* http://www.gno.org/pub/apple2/doc/apple/filetypes/ftn.1a.xxxx
*
* Date created: Nov 15, 2002 3:55:21 PM
* @author: Rob Greene
*/
public class AppleWorksWordProcessorFileFilter implements FileFilter {
public static final int RENDER_AS_TEXT = 0;
public static final int RENDER_AS_HTML = 1;
private int rendering = RENDER_AS_TEXT;
/**
* Constructor for AppleWorksWordProcessorFileFilter.
*/
public AppleWorksWordProcessorFileFilter() {
super();
}
/**
* Process the given FileEntry and return a byte array with filtered data.
* @see com.webcodepro.applecommander.storage.FileFilter#filter(FileEntry)
*/
public byte[] filter(FileEntry fileEntry) {
byte[] fileData = fileEntry.getFileData();
if (fileData[4] != 0x4f) return null; // not an AWP file!
ByteArrayOutputStream byteArray = new ByteArrayOutputStream(fileData.length);
PrintWriter printWriter = new PrintWriter(byteArray, true);
if (isHtmlRendering()) {
printWriter.println("
");
}
boolean version3 = (fileData[183] != 0);
int offset = 300 + (version3 ? 2 : 0); // version 3.0's first line record is invalid
while (offset < fileData.length) {
int byte0 = AppleUtil.getUnsignedByte(fileData[offset++]);
int byte1 = AppleUtil.getUnsignedByte(fileData[offset++]);
if (byte0 == 0xff && byte1 == 0xff) { // end of file
break;
} else if (byte1 == 0xd0) { // Carriage return line records
handleReturn(printWriter);
} else if (byte1 > 0xd0) { // Command line records
if (isHtmlRendering()) {
offset = handleCommandRecordAsHtml(byte0, byte1, printWriter, offset);
}
} else { // Text records (assumed)
offset = handleTextRecord(fileData, printWriter, offset);
}
}
if (isHtmlRendering()) {
printWriter.println("");
}
return byteArray.toByteArray();
}
/**
* Deal with an individual text record.
*/
protected int handleTextRecord(byte[] fileData, PrintWriter printWriter, int offset) {
int byte2 = AppleUtil.getUnsignedByte(fileData[offset++]);
int byte3 = AppleUtil.getUnsignedByte(fileData[offset++]);
boolean addReturn = (byte3 >= 0x80);
int length = (byte3 & 0x7f);
while (length > 0) {
byte ch = fileData[offset++];
length--;
if (ch < 0x20) { // special formatting character
if (isHtmlRendering()) handleSpecialCodesAsHtml(printWriter, ch);
} else {
if (isHtmlRendering() && ch == ' ') {
int extraSpaces = 0;
while (fileData[offset+extraSpaces] == ' ') {
extraSpaces++;
}
if (extraSpaces > 0) {
printWriter.print(" ");
while (fileData[offset] == ' ') {
offset++;
length--;
printWriter.print(" ");
}
} else {
printWriter.print((char)ch);
}
} else {
printWriter.print((char)ch);
}
}
}
if (addReturn) handleReturn(printWriter);
return offset;
}
/**
* Deal with carriage-return.
*/
protected void handleReturn(PrintWriter printWriter) {
if (isHtmlRendering()) printWriter.println("
");
else printWriter.println();
}
/**
* Process special coding of a text record.
*/
protected void handleSpecialCodesAsHtml(PrintWriter printWriter, byte ch) {
switch (ch) {
case 0x01: printWriter.print("");
break;
case 0x02: printWriter.print("");
break;
case 0x03: printWriter.print("");
break;
case 0x04: printWriter.print("");
break;
case 0x05: printWriter.print("");
break;
case 0x06: printWriter.print("");
break;
case 0x07: printWriter.print("");
break;
case 0x08: printWriter.print("");
break;
case 0x09: printWriter.print("[Page#]");
break;
case 0x0b: printWriter.print(" ");
break;
case 0x0e: SimpleDateFormat dateFormat = new SimpleDateFormat("MM/dd/yy");
printWriter.print(dateFormat.format(new Date()));
break;
case 0x0f: SimpleDateFormat timeFormat = new SimpleDateFormat("HH:mm:ss");
printWriter.print(timeFormat.format(new Date()));
break;
}
}
/**
* Deal with an individual command line record.
*/
protected int handleCommandRecordAsHtml(int byte0, int byte1,
PrintWriter printWriter, int offset) {
switch (byte1) {
case 0xd7: printWriter.println("");
break;
case 0xdf: printWriter.println("");
break;
case 0xe0: printWriter.println("");
break;
case 0xe1: printWriter.println("");
break;
case 0xee: for (int i=0; i");
}
break;
}
return offset;
}
/**
* Give suggested file name.
* @see com.webcodepro.applecommander.storage.FileFilter#getSuggestedFileName(FileEntry)
*/
public String getSuggestedFileName(FileEntry fileEntry) {
String fileName = fileEntry.getFilename().trim();
String extension = ".txt";
if (isHtmlRendering()) extension = ".html";
if (!fileName.toLowerCase().endsWith(extension)) {
fileName = fileName + extension;
}
return fileName;
}
/**
* Set the rendering method.
*/
public void setRendering(int rendering) {
this.rendering = rendering;
}
/**
* Indicates if this is a text rendering.
*/
public boolean isTextRendering() {
return rendering == RENDER_AS_TEXT;
}
/**
* Indicates if this is an HTML rendering.
*/
public boolean isHtmlRendering() {
return rendering == RENDER_AS_HTML;
}
}