Added RTF export option. Changed format choice to be done via
select methods - to avoid dependence upon the internal code of the filter. Currently, a contant integer is used, but that is leading to multiple switch statements. This may be changed to some form of innner class in the future. The change to a select method will hide this internal state from the world (a good thing!).
This commit is contained in:
Robert Greene
parent
a554a1d445
commit
0ca49a89f2
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@ -19,6 +19,8 @@
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*/
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package com.webcodepro.applecommander.storage;
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import com.webcodepro.applecommander.ui.AppleCommander;
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import java.io.ByteArrayOutputStream;
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import java.io.PrintWriter;
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import java.text.SimpleDateFormat;
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@ -26,17 +28,56 @@ import java.util.Date;
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/**
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* Extract the contents of an AWP (AppleWorks word processor) document and
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* convert to a text format.
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* See format documentation at:
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* convert to a text format. Currently supported formats are plain text,
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* HTML, or RTF. These are not exact duplicates, but they are close
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* approximations. RTF format is suitable for conversion to other word
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* processors.
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* <p>
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* To choose export format, use the appropriately named select method.
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* <p>
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* See AWP format documentation at:
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* http://www.gno.org/pub/apple2/doc/apple/filetypes/ftn.1a.xxxx
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* <p>
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* Date created: Nov 15, 2002 3:55:21 PM
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* @author: Rob Greene
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*/
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public class AppleWorksWordProcessorFileFilter implements FileFilter {
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public static final int RENDER_AS_TEXT = 0;
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public static final int RENDER_AS_HTML = 1;
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/*
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* This list identifies the various rendering options.
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* As the internal format may change in the future,
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* the internal representation is hidden and the developer
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* should use the appropriate select method.
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*/
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private static final int RENDER_AS_TEXT = 0;
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private static final int RENDER_AS_HTML = 1;
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private static final int RENDER_AS_RTF = 2;
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private int rendering = RENDER_AS_TEXT;
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/*
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* Identifies the codes embedded in the AppleWorks file.
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* FIXME: Need to ensure that all codes are defined.
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*/
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private static final int CODE_BOLD_ON = 0x01;
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private static final int CODE_BOLD_OFF = 0x02;
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private static final int CODE_SUPERSCRIPT_ON = 0x03;
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private static final int CODE_SUPERSCRIPT_OFF = 0x04;
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private static final int CODE_SUBSCRIPT_ON = 0x05;
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private static final int CODE_SUBSCRIPT_OFF = 0x06;
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private static final int CODE_UNDERLINE_ON = 0x07;
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private static final int CODE_UNDERLINE_OFF = 0x08;
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private static final int CODE_PAGE_NUMBER = 0x09;
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private static final int CODE_NONBREAKING_SPACE = 0x0b;
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private static final int CODE_DATE = 0x0e;
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private static final int CODE_TIME = 0x0f;
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/*
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* Identifies the commands embedded in the AppleWorks file.
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* FIXME: Need to ensure that all commands are defined.
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*/
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private static final int COMMAND_LEFT = 0xe0;
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private static final int COMMAND_RIGHT = 0xd7;
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private static final int COMMAND_CENTER = 0xe1;
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private static final int COMMAND_JUSTIFY = 0xedf;
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private static final int COMMAND_MULTIPLE_RETURNS = 0xee;
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/**
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* Constructor for AppleWorksWordProcessorFileFilter.
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*/
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@ -54,6 +95,11 @@ public class AppleWorksWordProcessorFileFilter implements FileFilter {
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PrintWriter printWriter = new PrintWriter(byteArray, true);
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if (isHtmlRendering()) {
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printWriter.println("<html><style>BODY { font-family: monospace; }</style><body>");
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} else if (isRtfRendering()) {
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printWriter.println("{\\rtf1");
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printWriter.print("{\\*\\generator AppleCommander ");
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printWriter.print(AppleCommander.VERSION);
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printWriter.println(";}");
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}
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boolean version3 = (fileData[183] != 0);
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int offset = 300 + (version3 ? 2 : 0); // version 3.0's first line record is invalid
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@ -68,6 +114,10 @@ public class AppleWorksWordProcessorFileFilter implements FileFilter {
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} else if (byte1 > 0xd0) { // Command line records
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if (isHtmlRendering()) {
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offset = handleCommandRecordAsHtml(byte0, byte1, printWriter, offset);
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} else if (isRtfRendering()) {
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offset = handleCommandRecordAsRtf(byte0, byte1, printWriter, offset);
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} else {
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offset = handleCommandRecordAsText(byte0, byte1, printWriter, offset);
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}
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} else { // Text records (assumed)
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offset = handleTextRecord(fileData, printWriter, offset);
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@ -75,6 +125,8 @@ public class AppleWorksWordProcessorFileFilter implements FileFilter {
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}
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if (isHtmlRendering()) {
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printWriter.println("</body></html>");
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} else if (isRtfRendering()) {
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printWriter.println("}");
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}
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return byteArray.toByteArray();
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}
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@ -82,7 +134,7 @@ public class AppleWorksWordProcessorFileFilter implements FileFilter {
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* Deal with an individual text record.
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*/
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protected int handleTextRecord(byte[] fileData, PrintWriter printWriter, int offset) {
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int byte2 = AppleUtil.getUnsignedByte(fileData[offset++]);
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/* byte2 */ AppleUtil.getUnsignedByte(fileData[offset++]);
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int byte3 = AppleUtil.getUnsignedByte(fileData[offset++]);
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boolean addReturn = (byte3 >= 0x80);
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int length = (byte3 & 0x7f);
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@ -91,6 +143,8 @@ public class AppleWorksWordProcessorFileFilter implements FileFilter {
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length--;
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if (ch < 0x20) { // special formatting character
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if (isHtmlRendering()) handleSpecialCodesAsHtml(printWriter, ch);
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else if (isRtfRendering()) handleSpecialCodesAsRtf(printWriter, ch);
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else handleSpecialCodesAsText(printWriter, ch);
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} else {
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if (isHtmlRendering() && ch == ' ') {
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int extraSpaces = 0;
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@ -120,6 +174,7 @@ public class AppleWorksWordProcessorFileFilter implements FileFilter {
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*/
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protected void handleReturn(PrintWriter printWriter) {
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if (isHtmlRendering()) printWriter.println("<br>");
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else if (isRtfRendering()) printWriter.println("\\par");
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else printWriter.println();
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}
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/**
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@ -127,30 +182,75 @@ public class AppleWorksWordProcessorFileFilter implements FileFilter {
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*/
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protected void handleSpecialCodesAsHtml(PrintWriter printWriter, byte ch) {
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switch (ch) {
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case 0x01: printWriter.print("<b>");
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case CODE_BOLD_ON:
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printWriter.print("<b>");
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break;
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case 0x02: printWriter.print("</b>");
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case CODE_BOLD_OFF:
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printWriter.print("</b>");
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break;
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case 0x03: printWriter.print("<sup>");
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case CODE_SUPERSCRIPT_ON:
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printWriter.print("<sup>");
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break;
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case 0x04: printWriter.print("</sup>");
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case CODE_SUPERSCRIPT_OFF:
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printWriter.print("</sup>");
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break;
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case 0x05: printWriter.print("<sub>");
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case CODE_SUBSCRIPT_ON:
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printWriter.print("<sub>");
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break;
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case 0x06: printWriter.print("</sub>");
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case CODE_SUBSCRIPT_OFF:
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printWriter.print("</sub>");
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break;
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case 0x07: printWriter.print("<u>");
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case CODE_UNDERLINE_ON:
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printWriter.print("<u>");
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break;
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case 0x08: printWriter.print("</u>");
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case CODE_UNDERLINE_OFF:
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printWriter.print("</u>");
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break;
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case 0x09: printWriter.print("[Page#]");
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case CODE_NONBREAKING_SPACE:
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printWriter.print(" ");
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break;
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case 0x0b: printWriter.print(" ");
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default: handleSpecialCodesAsText(printWriter, ch);
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break;
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case 0x0e: SimpleDateFormat dateFormat = new SimpleDateFormat("MM/dd/yy");
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}
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}
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/**
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* Process special coding of a text record.
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*/
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protected void handleSpecialCodesAsRtf(PrintWriter printWriter, byte ch) {
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switch (ch) {
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case CODE_BOLD_ON:
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printWriter.print("\\b ");
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break;
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case CODE_BOLD_OFF:
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printWriter.print("\\b0");
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break;
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case CODE_UNDERLINE_ON:
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printWriter.print("\\ul ");
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break;
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case CODE_UNDERLINE_OFF:
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printWriter.print("\\ulnone");
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break;
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case CODE_NONBREAKING_SPACE:
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printWriter.print(" ");
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break;
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default: handleSpecialCodesAsText(printWriter, ch);
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break;
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}
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}
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/**
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* Process special coding of a text record.
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*/
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protected void handleSpecialCodesAsText(PrintWriter printWriter, byte ch) {
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switch (ch) {
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case CODE_PAGE_NUMBER:
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printWriter.print("[Page#]");
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break;
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case CODE_DATE:
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SimpleDateFormat dateFormat = new SimpleDateFormat("MM/dd/yy");
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printWriter.print(dateFormat.format(new Date()));
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break;
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case 0x0f: SimpleDateFormat timeFormat = new SimpleDateFormat("HH:mm:ss");
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case CODE_TIME:
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SimpleDateFormat timeFormat = new SimpleDateFormat("HH:mm:ss");
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printWriter.print(timeFormat.format(new Date()));
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break;
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}
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PrintWriter printWriter, int offset) {
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switch (byte1) {
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case 0xd7: printWriter.println("<style>BODY: text-align: right;</style>");
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case COMMAND_RIGHT:
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printWriter.println("<style>BODY: text-align: right;</style>");
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break;
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case 0xdf: printWriter.println("<style>BODY: text-align: justify;</style>");
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case COMMAND_JUSTIFY:
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printWriter.println("<style>BODY: text-align: justify;</style>");
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break;
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case 0xe0: printWriter.println("<style>BODY: text-align: left;</style>");
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case COMMAND_LEFT:
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printWriter.println("<style>BODY: text-align: left;</style>");
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break;
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case 0xe1: printWriter.println("<style>BODY: text-align: center;</style>");
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case COMMAND_CENTER:
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printWriter.println("<style>BODY: text-align: center;</style>");
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break;
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case 0xee: for (int i=0; i<byte0; i++) {
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printWriter.println("<br>");
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default: offset = handleCommandRecordAsText(byte0, byte1,
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printWriter, offset);
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break;
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}
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return offset;
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}
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/**
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* Deal with an individual command line record.
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*/
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protected int handleCommandRecordAsRtf(int byte0, int byte1,
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PrintWriter printWriter, int offset) {
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switch (byte1) {
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case COMMAND_RIGHT:
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printWriter.println("\\pard\\qr ");
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break;
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case COMMAND_LEFT:
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printWriter.println("\\pard ");
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break;
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case COMMAND_CENTER:
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printWriter.println("\\pard\\qc ");
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break;
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default: offset = handleCommandRecordAsText(byte0, byte1,
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printWriter, offset);
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break;
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}
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return offset;
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}
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/**
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* Deal with an individual command line record.
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*/
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protected int handleCommandRecordAsText(int byte0, int byte1,
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PrintWriter printWriter, int offset) {
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switch (byte1) {
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case COMMAND_MULTIPLE_RETURNS:
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for (int i=0; i<byte0; i++) {
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handleReturn(printWriter);
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}
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break;
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}
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@ -194,7 +334,7 @@ public class AppleWorksWordProcessorFileFilter implements FileFilter {
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/**
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* Set the rendering method.
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*/
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public void setRendering(int rendering) {
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protected void setRendering(int rendering) {
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this.rendering = rendering;
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}
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/**
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public boolean isHtmlRendering() {
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return rendering == RENDER_AS_HTML;
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}
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/**
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* Indicates if this is an RTF rendering.
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*/
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public boolean isRtfRendering() {
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return rendering == RENDER_AS_RTF;
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}
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/**
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* Selects the text rendering engine.
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*/
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public void selectTextRendering() {
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rendering = RENDER_AS_TEXT;
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}
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/**
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* Selects the HTML rendering engine.
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*/
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public void selectHtmlRendering() {
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rendering = RENDER_AS_HTML;
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}
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/**
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* Selects the RTF rendering engine.
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*/
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public void selectRtfRendering() {
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rendering = RENDER_AS_RTF;
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}
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}
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