git.gag.com Git - fw/altos/blob - altoslib/AltosEepromIterable.java

   1 /*
   2  * Copyright © 2013 Keith Packard <keithp@keithp.com>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful, but
  10  * WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with this program; if not, write to the Free Software Foundation, Inc.,
  16  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
  17  */
  18
  19 package org.altusmetrum.altoslib_11;
  20
  21 import java.io.*;
  22 import java.util.*;
  23 import java.text.*;
  24
  25 class AltosEepromOrdered implements Comparable<AltosEepromOrdered> {
  26         AltosEeprom     eeprom;
  27         int             index;
  28         int             tick;
  29
  30         int cmdi() {
  31                 if (eeprom.cmd == AltosLib.AO_LOG_FLIGHT)
  32                         return 0;
  33                 return 1;
  34         }
  35
  36         public int compareTo(AltosEepromOrdered o) {
  37                 int     cmd_diff = cmdi() - o.cmdi();
  38
  39                 if (cmd_diff != 0)
  40                         return cmd_diff;
  41
  42                 if (eeprom.has_seconds() && o.eeprom.has_seconds()) {
  43                         int     seconds_diff = eeprom.seconds() - o.eeprom.seconds();
  44
  45                         if (seconds_diff != 0)
  46                                 return seconds_diff;
  47                 }
  48
  49                 int     tick_diff = tick - o.tick;
  50
  51                 if (tick_diff != 0)
  52                         return tick_diff;
  53                 return index - o.index;
  54         }
  55
  56         AltosEepromOrdered (AltosEeprom eeprom, int index, int tick) {
  57                 this.eeprom = eeprom;
  58                 this.index = index;
  59                 this.tick = tick;
  60         }
  61 }
  62
  63 class AltosEepromOrderedIterator implements Iterator<AltosEeprom> {
  64         TreeSet<AltosEepromOrdered>     olist;
  65         Iterator<AltosEepromOrdered>    oiterator;
  66
  67         public AltosEepromOrderedIterator(Iterable<AltosEeprom> eeproms) {
  68                 olist = new TreeSet<AltosEepromOrdered>();
  69
  70                 int     tick = 0;
  71                 int     index = 0;
  72                 boolean first = true;
  73
  74                 for (AltosEeprom e : eeproms) {
  75                         int     t = e.tick;
  76                         if (first)
  77                                 tick = t;
  78                         else {
  79                                 while (t < tick - 32767)
  80                                         t += 65536;
  81                                 tick = t;
  82                         }
  83                         olist.add(new AltosEepromOrdered(e, index++, tick));
  84                         first = false;
  85                 }
  86
  87                 oiterator = olist.iterator();
  88         }
  89
  90         public boolean hasNext() {
  91                 return oiterator.hasNext();
  92         }
  93
  94         public AltosEeprom next() {
  95                 return oiterator.next().eeprom;
  96         }
  97
  98         public void remove () {
  99         }
 100 }
 101
 102 public class AltosEepromIterable implements Iterable<AltosEeprom> {
 103         public LinkedList<AltosEeprom> eeproms;
 104
 105         public void write(PrintStream out) {
 106                 for (AltosEeprom eeprom : eeproms)
 107                         eeprom.write(out);
 108         }
 109
 110         public AltosState state() {
 111                 AltosState      state = new AltosState();
 112
 113                 for (AltosEeprom header : eeproms)
 114                         header.update_state(state);
 115                 return state;
 116         }
 117
 118         public AltosEepromIterable(LinkedList<AltosEeprom> eeproms) {
 119                 this.eeproms = eeproms;
 120         }
 121
 122         public Iterator<AltosEeprom> iterator() {
 123                 if (eeproms == null)
 124                         eeproms = new LinkedList<AltosEeprom>();
 125                 return new AltosEepromOrderedIterator(eeproms);
 126         }
 127 }