Apple-2-Tools/AppleCommander
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Incorporated fix from John Matthews for get/setPascalDate.

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This commit is contained in:
Robert Greene 2003-09-01 03:23:21 +00:00
parent 203c4b1d06
commit 513627cc95
1 changed files with 17 additions and 17 deletions
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34
src/com/webcodepro/applecommander/util/AppleUtil.java
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@ -28,7 +28,7 @@ import java.util.GregorianCalendar;
* This class contains helper methods for dealing with Apple2 data.
* <p>
* Date created: Oct 5, 2002 4:16:16 PM
* @author: Rob Greene
* @author Rob Greene
*/
public class AppleUtil {
/**
@ -200,16 +200,16 @@ public class AppleUtil {
}
/**
* Extract a Pascal date from the buffer.<br>
* Bits 0-3: month (1-12)<br>
* Bits 4-8: day (1-31)<br>
* Bits 9-15: year (0-99)
*/
* Extract a Pascal date from the buffer.<br>
* Bits 0-3: month (1-12)<br>
* Bits 4-8: day (1-31)<br>
* Bits 9-15: year (0-99)
*/
public static Date getPascalDate(byte[] buffer, int offset) {
int pascalDate = getWordValue(buffer, offset);
int month = pascalDate & 0x000f;
int day = (pascalDate & 0x00f0) >> 4;
int year = (pascalDate & 0xff00) >> 8;
int month = pascalDate & 0x000f - 1;
int day = (pascalDate & 0x01f0) >> 4;
int year = (pascalDate & 0xfe00) >> 9;
if (year < 50) year+= 2000;
if (year < 100) year+= 1900;
GregorianCalendar gc = new GregorianCalendar(year, month, day);
@ -217,20 +217,20 @@ public class AppleUtil {
}
/**
* Set a Pascal data to the buffer.<br>
* Bits 0-3: month (1-12)<br>
* Bits 4-8: day (1-31)<br>
* Bits 9-15: year (0-99)
*/
* Set a Pascal data to the buffer.<br>
* Bits 0-3: month (1-12)<br>
* Bits 4-8: day (1-31)<br>
* Bits 9-15: year (0-99)
*/
public static void setPascalDate(byte[] buffer, int offset, Date date) {
GregorianCalendar gc = new GregorianCalendar();
gc.setTime(date);
int month = gc.get(GregorianCalendar.MONTH);
int month = gc.get(GregorianCalendar.MONTH) + 1;
int day = gc.get(GregorianCalendar.DAY_OF_MONTH);
int year = gc.get(GregorianCalendar.YEAR) % 100;
int pascalDate = (month & 0x000f)
| ((day << 4) & 0x00f0)
| ((year << 8) & 0xff00);
| ((day << 4) & 0x01f0)
| ((year << 9) & 0xfe00);
setWordValue(buffer, offset, pascalDate);
}