Apple-2-Tools/AppleCommander
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Added setProdosDate, setProdosTime, and a setString that optionally

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sets the high bit on characters.
This commit is contained in:
Robert Greene 2002-12-12 01:44:22 +00:00
parent 035d2cf73a
commit aed0a97b40
1 changed files with 46 additions and 0 deletions
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46
src/com/webcodepro/applecommander/storage/AppleUtil.java
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@ -134,6 +134,19 @@ public class AppleUtil {
} }
} }
/**
* Create an Apple string that is space delimited.
*/
public static void setString(byte[] buffer, int offset, String string, int length, boolean highBitOn) {
for (int i=0; i<length; i++) {
char ch = ' ';
if (i < string.length()) {
ch = string.charAt(i);
}
buffer[offset+i] = (byte) (ch | (highBitOn ? 0x80 : 0x00));
}
}
/** /**
* Create an Apple string that is the same length as the given string. * Create an Apple string that is the same length as the given string.
*/ */
@ -201,6 +214,15 @@ public class AppleUtil {
return getString(buffer, offset+1, length); return getString(buffer, offset+1, length);
} }
/**
* Sets a ProDOS string into the buffer.
*/
public static void setProdosString(byte[] buffer, int offset, String string, int maxLength) {
int len = Math.min(string.length(), maxLength);
buffer[offset] = (byte) ((buffer[offset] & 0xf0) | (len & 0x0f));
setString(buffer, offset+1, string, len, false);
}
/** /**
* Format a byte value as hexidecimal. * Format a byte value as hexidecimal.
*/ */
@ -241,6 +263,30 @@ public class AppleUtil {
return gc.getTime(); return gc.getTime();
} }
/**
* Set a ProDOS date into the buffer.
*/
public static void setProdosDate(byte[] buffer, int offset, Date date) {
int day = 0;
int month = 0;
int year = 0;
int minute = 0;
int hour = 0;
if (date != null) {
GregorianCalendar gc = new GregorianCalendar();
gc.setTime(date);
day = gc.get(GregorianCalendar.DAY_OF_MONTH);
month = gc.get(GregorianCalendar.MONTH);
year = gc.get(GregorianCalendar.YEAR);
minute = gc.get(GregorianCalendar.MINUTE);
hour = gc.get(GregorianCalendar.HOUR_OF_DAY);
}
int ymd = ((year & 0x7f) << 9) | ((month & 0xf) << 5) | (day & 0x1f);
int hm = ((hour & 0x1f) << 8) | (minute & 0x3f);
setWordValue(buffer, offset, ymd);
setWordValue(buffer, offset+2, hm);
}
/** /**
* Make a "nice" filename. Some of the Apple ][ file names * Make a "nice" filename. Some of the Apple ][ file names
* have characters that are unpalatable - such as "/" or * have characters that are unpalatable - such as "/" or