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Added RTF export option. Changed format choice to be done via

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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 2003-02-08 16:42:07 +00:00
parent a554a1d445
commit 0ca49a89f2
1 changed files with 188 additions and 24 deletions
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212
src/com/webcodepro/applecommander/storage/AppleWorksWordProcessorFileFilter.java
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@ -19,6 +19,8 @@
*/ */
package com.webcodepro.applecommander.storage; package com.webcodepro.applecommander.storage;
import com.webcodepro.applecommander.ui.AppleCommander;
import java.io.ByteArrayOutputStream; import java.io.ByteArrayOutputStream;
import java.io.PrintWriter; import java.io.PrintWriter;
import java.text.SimpleDateFormat; import java.text.SimpleDateFormat;
@ -26,17 +28,56 @@ import java.util.Date;
/** /**
* Extract the contents of an AWP (AppleWorks word processor) document and * Extract the contents of an AWP (AppleWorks word processor) document and
* convert to a text format. * convert to a text format. Currently supported formats are plain text,
* See format documentation at: * HTML, or RTF. These are not exact duplicates, but they are close
* approximations. RTF format is suitable for conversion to other word
* processors.
* <p>
* To choose export format, use the appropriately named select method.
* <p>
* See AWP format documentation at:
* http://www.gno.org/pub/apple2/doc/apple/filetypes/ftn.1a.xxxx * http://www.gno.org/pub/apple2/doc/apple/filetypes/ftn.1a.xxxx
* <p> * <p>
* Date created: Nov 15, 2002 3:55:21 PM * Date created: Nov 15, 2002 3:55:21 PM
* @author: Rob Greene * @author: Rob Greene
*/ */
public class AppleWorksWordProcessorFileFilter implements FileFilter { public class AppleWorksWordProcessorFileFilter implements FileFilter {
public static final int RENDER_AS_TEXT = 0; /*
public static final int RENDER_AS_HTML = 1; * This list identifies the various rendering options.
* As the internal format may change in the future,
* the internal representation is hidden and the developer
* should use the appropriate select method.
*/
private static final int RENDER_AS_TEXT = 0;
private static final int RENDER_AS_HTML = 1;
private static final int RENDER_AS_RTF = 2;
private int rendering = RENDER_AS_TEXT; private int rendering = RENDER_AS_TEXT;
/*
* Identifies the codes embedded in the AppleWorks file.
* FIXME: Need to ensure that all codes are defined.
*/
private static final int CODE_BOLD_ON = 0x01;
private static final int CODE_BOLD_OFF = 0x02;
private static final int CODE_SUPERSCRIPT_ON = 0x03;
private static final int CODE_SUPERSCRIPT_OFF = 0x04;
private static final int CODE_SUBSCRIPT_ON = 0x05;
private static final int CODE_SUBSCRIPT_OFF = 0x06;
private static final int CODE_UNDERLINE_ON = 0x07;
private static final int CODE_UNDERLINE_OFF = 0x08;
private static final int CODE_PAGE_NUMBER = 0x09;
private static final int CODE_NONBREAKING_SPACE = 0x0b;
private static final int CODE_DATE = 0x0e;
private static final int CODE_TIME = 0x0f;
/*
* Identifies the commands embedded in the AppleWorks file.
* FIXME: Need to ensure that all commands are defined.
*/
private static final int COMMAND_LEFT = 0xe0;
private static final int COMMAND_RIGHT = 0xd7;
private static final int COMMAND_CENTER = 0xe1;
private static final int COMMAND_JUSTIFY = 0xedf;
private static final int COMMAND_MULTIPLE_RETURNS = 0xee;
/** /**
* Constructor for AppleWorksWordProcessorFileFilter. * Constructor for AppleWorksWordProcessorFileFilter.
*/ */
@ -54,6 +95,11 @@ public class AppleWorksWordProcessorFileFilter implements FileFilter {
PrintWriter printWriter = new PrintWriter(byteArray, true); PrintWriter printWriter = new PrintWriter(byteArray, true);
if (isHtmlRendering()) { if (isHtmlRendering()) {
printWriter.println("<html><style>BODY { font-family: monospace; }</style><body>"); printWriter.println("<html><style>BODY { font-family: monospace; }</style><body>");
} else if (isRtfRendering()) {
printWriter.println("{\\rtf1");
printWriter.print("{\\*\\generator AppleCommander ");
printWriter.print(AppleCommander.VERSION);
printWriter.println(";}");
} }
boolean version3 = (fileData[183] != 0); boolean version3 = (fileData[183] != 0);
int offset = 300 + (version3 ? 2 : 0); // version 3.0's first line record is invalid int offset = 300 + (version3 ? 2 : 0); // version 3.0's first line record is invalid
@ -68,6 +114,10 @@ public class AppleWorksWordProcessorFileFilter implements FileFilter {
} else if (byte1 > 0xd0) { // Command line records } else if (byte1 > 0xd0) { // Command line records
if (isHtmlRendering()) { if (isHtmlRendering()) {
offset = handleCommandRecordAsHtml(byte0, byte1, printWriter, offset); offset = handleCommandRecordAsHtml(byte0, byte1, printWriter, offset);
} else if (isRtfRendering()) {
offset = handleCommandRecordAsRtf(byte0, byte1, printWriter, offset);
} else {
offset = handleCommandRecordAsText(byte0, byte1, printWriter, offset);
} }
} else { // Text records (assumed) } else { // Text records (assumed)
offset = handleTextRecord(fileData, printWriter, offset); offset = handleTextRecord(fileData, printWriter, offset);
@ -75,6 +125,8 @@ public class AppleWorksWordProcessorFileFilter implements FileFilter {
} }
if (isHtmlRendering()) { if (isHtmlRendering()) {
printWriter.println("</body></html>"); printWriter.println("</body></html>");
} else if (isRtfRendering()) {
printWriter.println("}");
} }
return byteArray.toByteArray(); return byteArray.toByteArray();
} }
@ -82,7 +134,7 @@ public class AppleWorksWordProcessorFileFilter implements FileFilter {
* Deal with an individual text record. * Deal with an individual text record.
*/ */
protected int handleTextRecord(byte[] fileData, PrintWriter printWriter, int offset) { protected int handleTextRecord(byte[] fileData, PrintWriter printWriter, int offset) {
int byte2 = AppleUtil.getUnsignedByte(fileData[offset++]); /* byte2 */ AppleUtil.getUnsignedByte(fileData[offset++]);
int byte3 = AppleUtil.getUnsignedByte(fileData[offset++]); int byte3 = AppleUtil.getUnsignedByte(fileData[offset++]);
boolean addReturn = (byte3 >= 0x80); boolean addReturn = (byte3 >= 0x80);
int length = (byte3 & 0x7f); int length = (byte3 & 0x7f);
@ -91,6 +143,8 @@ public class AppleWorksWordProcessorFileFilter implements FileFilter {
length--; length--;
if (ch < 0x20) { // special formatting character if (ch < 0x20) { // special formatting character
if (isHtmlRendering()) handleSpecialCodesAsHtml(printWriter, ch); if (isHtmlRendering()) handleSpecialCodesAsHtml(printWriter, ch);
else if (isRtfRendering()) handleSpecialCodesAsRtf(printWriter, ch);
else handleSpecialCodesAsText(printWriter, ch);
} else { } else {
if (isHtmlRendering() && ch == ' ') { if (isHtmlRendering() && ch == ' ') {
int extraSpaces = 0; int extraSpaces = 0;
@ -120,6 +174,7 @@ public class AppleWorksWordProcessorFileFilter implements FileFilter {
*/ */
protected void handleReturn(PrintWriter printWriter) { protected void handleReturn(PrintWriter printWriter) {
if (isHtmlRendering()) printWriter.println("<br>"); if (isHtmlRendering()) printWriter.println("<br>");
else if (isRtfRendering()) printWriter.println("\\par");
else printWriter.println(); else printWriter.println();
} }
/** /**
@ -127,30 +182,75 @@ public class AppleWorksWordProcessorFileFilter implements FileFilter {
*/ */
protected void handleSpecialCodesAsHtml(PrintWriter printWriter, byte ch) { protected void handleSpecialCodesAsHtml(PrintWriter printWriter, byte ch) {
switch (ch) { switch (ch) {
case 0x01: printWriter.print("<b>"); case CODE_BOLD_ON:
printWriter.print("<b>");
break; break;
case 0x02: printWriter.print("</b>"); case CODE_BOLD_OFF:
printWriter.print("</b>");
break; break;
case 0x03: printWriter.print("<sup>"); case CODE_SUPERSCRIPT_ON:
printWriter.print("<sup>");
break; break;
case 0x04: printWriter.print("</sup>"); case CODE_SUPERSCRIPT_OFF:
printWriter.print("</sup>");
break; break;
case 0x05: printWriter.print("<sub>"); case CODE_SUBSCRIPT_ON:
printWriter.print("<sub>");
break; break;
case 0x06: printWriter.print("</sub>"); case CODE_SUBSCRIPT_OFF:
printWriter.print("</sub>");
break; break;
case 0x07: printWriter.print("<u>"); case CODE_UNDERLINE_ON:
printWriter.print("<u>");
break; break;
case 0x08: printWriter.print("</u>"); case CODE_UNDERLINE_OFF:
printWriter.print("</u>");
break; break;
case 0x09: printWriter.print("[Page#]"); case CODE_NONBREAKING_SPACE:
printWriter.print("&nbsp;");
break; break;
case 0x0b: printWriter.print("&nbsp;"); default: handleSpecialCodesAsText(printWriter, ch);
break; break;
case 0x0e: SimpleDateFormat dateFormat = new SimpleDateFormat("MM/dd/yy"); }
}
/**
* Process special coding of a text record.
*/
protected void handleSpecialCodesAsRtf(PrintWriter printWriter, byte ch) {
switch (ch) {
case CODE_BOLD_ON:
printWriter.print("\\b ");
break;
case CODE_BOLD_OFF:
printWriter.print("\\b0");
break;
case CODE_UNDERLINE_ON:
printWriter.print("\\ul ");
break;
case CODE_UNDERLINE_OFF:
printWriter.print("\\ulnone");
break;
case CODE_NONBREAKING_SPACE:
printWriter.print(" ");
break;
default: handleSpecialCodesAsText(printWriter, ch);
break;
}
}
/**
* Process special coding of a text record.
*/
protected void handleSpecialCodesAsText(PrintWriter printWriter, byte ch) {
switch (ch) {
case CODE_PAGE_NUMBER:
printWriter.print("[Page#]");
break;
case CODE_DATE:
SimpleDateFormat dateFormat = new SimpleDateFormat("MM/dd/yy");
printWriter.print(dateFormat.format(new Date())); printWriter.print(dateFormat.format(new Date()));
break; break;
case 0x0f: SimpleDateFormat timeFormat = new SimpleDateFormat("HH:mm:ss"); case CODE_TIME:
SimpleDateFormat timeFormat = new SimpleDateFormat("HH:mm:ss");
printWriter.print(timeFormat.format(new Date())); printWriter.print(timeFormat.format(new Date()));
break; break;
} }
@ -162,16 +262,56 @@ public class AppleWorksWordProcessorFileFilter implements FileFilter {
PrintWriter printWriter, int offset) { PrintWriter printWriter, int offset) {
switch (byte1) { switch (byte1) {
case 0xd7: printWriter.println("<style>BODY: text-align: right;</style>"); case COMMAND_RIGHT:
printWriter.println("<style>BODY: text-align: right;</style>");
break; break;
case 0xdf: printWriter.println("<style>BODY: text-align: justify;</style>"); case COMMAND_JUSTIFY:
printWriter.println("<style>BODY: text-align: justify;</style>");
break; break;
case 0xe0: printWriter.println("<style>BODY: text-align: left;</style>"); case COMMAND_LEFT:
printWriter.println("<style>BODY: text-align: left;</style>");
break; break;
case 0xe1: printWriter.println("<style>BODY: text-align: center;</style>"); case COMMAND_CENTER:
printWriter.println("<style>BODY: text-align: center;</style>");
break; break;
case 0xee: for (int i=0; i<byte0; i++) { default: offset = handleCommandRecordAsText(byte0, byte1,
printWriter.println("<br>"); printWriter, offset);
break;
}
return offset;
}
/**
* Deal with an individual command line record.
*/
protected int handleCommandRecordAsRtf(int byte0, int byte1,
PrintWriter printWriter, int offset) {
switch (byte1) {
case COMMAND_RIGHT:
printWriter.println("\\pard\\qr ");
break;
case COMMAND_LEFT:
printWriter.println("\\pard ");
break;
case COMMAND_CENTER:
printWriter.println("\\pard\\qc ");
break;
default: offset = handleCommandRecordAsText(byte0, byte1,
printWriter, offset);
break;
}
return offset;
}
/**
* Deal with an individual command line record.
*/
protected int handleCommandRecordAsText(int byte0, int byte1,
PrintWriter printWriter, int offset) {
switch (byte1) {
case COMMAND_MULTIPLE_RETURNS:
for (int i=0; i<byte0; i++) {
handleReturn(printWriter);
} }
break; break;
} }
@ -194,7 +334,7 @@ public class AppleWorksWordProcessorFileFilter implements FileFilter {
/** /**
* Set the rendering method. * Set the rendering method.
*/ */
public void setRendering(int rendering) { protected void setRendering(int rendering) {
this.rendering = rendering; this.rendering = rendering;
} }
/** /**
@ -209,4 +349,28 @@ public class AppleWorksWordProcessorFileFilter implements FileFilter {
public boolean isHtmlRendering() { public boolean isHtmlRendering() {
return rendering == RENDER_AS_HTML; return rendering == RENDER_AS_HTML;
} }
/**
* Indicates if this is an RTF rendering.
*/
public boolean isRtfRendering() {
return rendering == RENDER_AS_RTF;
}
/**
* Selects the text rendering engine.
*/
public void selectTextRendering() {
rendering = RENDER_AS_TEXT;
}
/**
* Selects the HTML rendering engine.
*/
public void selectHtmlRendering() {
rendering = RENDER_AS_HTML;
}
/**
* Selects the RTF rendering engine.
*/
public void selectRtfRendering() {
rendering = RENDER_AS_RTF;
}
} }