software-testing/project_task_sheets/phase_05/project_phase05_tasks/Duration.java

60 lines
1.8 KiB
Java
Raw Normal View History

2022-07-04 13:49:43 +02:00
public final class Duration {
public static final Duration ZERO = new Duration(0, 0);
static final int MINUTES_PER_HOUR = 60;
static final int SECONDS_PER_MINUTE = 60;
static final int SECONDS_PER_HOUR = SECONDS_PER_MINUTE * MINUTES_PER_HOUR;
static final long NANOS_PER_SECOND = 1000_000_000L;
private final long seconds;
private final int nanos;
public Duration(long seconds, int nanos) {
this.seconds = seconds;
this.nanos = nanos;
}
@Override
public String toString() {
if (this == ZERO) {
return "PT0S";
}
long hours = seconds / SECONDS_PER_HOUR;
int minutes = (int) ((seconds % SECONDS_PER_HOUR) / SECONDS_PER_MINUTE);
int secs = (int) (seconds % SECONDS_PER_MINUTE);
StringBuilder buf = new StringBuilder(24);
buf.append("PT");
if (hours != 0) {
buf.append(hours).append('H');
}
if (minutes != 0) {
buf.append(minutes).append('M');
}
if (secs == 0 && nanos == 0 && buf.length() > 2) {
return buf.toString();
}
if (secs < 0 && nanos > 0) {
if (secs == -1) {
buf.append("-0");
} else {
buf.append(secs + 1);
}
} else {
buf.append(secs);
}
if (nanos > 0) {
int pos = buf.length();
if (secs < 0) {
buf.append(2 * NANOS_PER_SECOND - nanos);
} else {
buf.append(nanos + NANOS_PER_SECOND);
}
while (buf.charAt(buf.length() - 1) == '0') {
buf.setLength(buf.length() - 1);
}
buf.setCharAt(pos, '.');
}
buf.append('S');
return buf.toString();
}
}