altoslib: move distinct classes to separate files.

[fw/altos] / altoslib / AltosOrderedRecord.java

diff --git a/altoslib/AltosOrderedRecord.java b/altoslib/AltosOrderedRecord.java
new file mode 100644 (file)
index 0000000..b4cfd8f
--- /dev/null
+++ b/altoslib/AltosOrderedRecord.java
@@ -0,0 +1,63 @@
+/*
+ * Copyright © 2010 Keith Packard <keithp@keithp.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+package org.altusmetrum.AltosLib;
+
+import java.text.ParseException;
+
+/*
+ * AltosRecords with an index field so they can be sorted by tick while preserving
+ * the original ordering for elements with matching ticks
+ */
+class AltosOrderedRecord extends AltosEepromRecord implements Comparable<AltosOrderedRecord> {
+
+       public int      index;
+
+       public AltosOrderedRecord(String line, int in_index, int prev_tick, boolean prev_tick_valid)
+               throws ParseException {
+               super(line);
+               if (prev_tick_valid) {
+                       tick |= (prev_tick & ~0xffff);
+                       if (tick < prev_tick) {
+                               if (prev_tick - tick > 0x8000)
+                                       tick += 0x10000;
+                       } else {
+                               if (tick - prev_tick > 0x8000)
+                                       tick -= 0x10000;
+                       }
+               }
+               index = in_index;
+       }
+
+       public AltosOrderedRecord(int in_cmd, int in_tick, int in_a, int in_b, int in_index) {
+               super(in_cmd, in_tick, in_a, in_b);
+               index = in_index;
+       }
+
+       public String toString() {
+               return String.format("%d.%d %04x %04x %04x",
+                                    cmd, index, tick, a, b);
+       }
+
+       public int compareTo(AltosOrderedRecord o) {
+               int     tick_diff = tick - o.tick;
+               if (tick_diff != 0)
+                       return tick_diff;
+               return index - o.index;
+       }
+}
+