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

   1 /*
   2  * Copyright © 2017 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
  15 package org.altusmetrum.altoslib_11;
  16
  17 import java.util.*;
  18 import java.io.*;
  19
  20 public class AltosEepromNew {
  21
  22         private AltosJson       config;
  23         ArrayList<Byte>         data;
  24         private AltosConfigData config_data;
  25
  26         /*
  27          * Public accessor APIs
  28          */
  29         public int data8(int offset) {
  30                 return ((int) data.get(offset)) & 0xff;
  31         }
  32
  33         public int data16(int offset) {
  34                 return data8(offset) | (data8(offset+1) << 8);
  35         }
  36
  37         public int data24(int offset) {
  38                 return (data8(offset) |
  39                         (data8(offset+1) << 8) |
  40                         (data8(offset+2) << 16));
  41         }
  42
  43         public int data32(int offset) {
  44                 return (data8(offset) |
  45                         (data8(offset+1) << 8) |
  46                         (data8(offset+2) << 16) |
  47                         (data8(offset+3) << 24));
  48         }
  49
  50         public int size() {
  51                 return data.size();
  52         }
  53
  54         public AltosConfigData config_data() {
  55                 if (config_data == null) {
  56                         config_data = (AltosConfigData) config.make(AltosConfigData.class);
  57                         if (config_data == null)
  58                                 config_data = new AltosConfigData();
  59
  60                         if (config_data.log_format == AltosLib.AO_LOG_FORMAT_UNKNOWN) {
  61                                 config_data.log_format = AltosLib.AO_LOG_FORMAT_FULL;
  62                                 if (config_data.product != null) {
  63                                         if (config_data.product.startsWith("TeleMetrum"))
  64                                                 config_data.log_format = AltosLib.AO_LOG_FORMAT_FULL;
  65                                         else if (config_data.product.startsWith("TeleMini"))
  66                                                 config_data.log_format = AltosLib.AO_LOG_FORMAT_TINY;
  67                                 }
  68                         }
  69                 }
  70                 return config_data;
  71         }
  72
  73         public void reset_config_data() {
  74                 config_data = null;
  75         }
  76
  77         private void write_config(Writer w) throws IOException {
  78                 config.write(w, 0, true);
  79                 w.append('\n');
  80         }
  81
  82         /*
  83          * Private I/O APIs
  84          */
  85         private void write_data(Writer w) throws IOException {
  86                 PrintWriter pw = new PrintWriter(w);
  87
  88                 for (int i = 0; i < data.size(); i++) {
  89                         if (i > 0) {
  90                                 if ((i & 0x1f) == 0)
  91                                         pw.printf("\n");
  92                                 else
  93                                         pw.printf(" ");
  94                         }
  95                         pw.printf("%02x", data.get(i));
  96                 }
  97                 w.append('\n');
  98         }
  99
 100         private boolean read_config(Reader r) throws IOException {
 101                 config = AltosJson.fromReader(r);
 102                 if (config == null)
 103                         return false;
 104                 return true;
 105         }
 106
 107         private boolean read_data(Reader r) throws IOException {
 108                 BufferedReader  br = new BufferedReader(r);
 109                 String          s;
 110
 111                 data = new ArrayList<Byte>();
 112                 while ((s = br.readLine()) != null) {
 113
 114                         String[] tokens = s.split("\\s+");
 115
 116                         for (int i = 0; i < tokens.length; i++) {
 117                                 if (tokens[i].length() > 0) {
 118                                         try {
 119                                                 data.add((byte) AltosLib.fromhex(tokens[i]));
 120                                         } catch (NumberFormatException e) {
 121                                                 throw new IOException(e.toString());
 122                                         }
 123                                 }
 124                         }
 125                 }
 126                 return true;
 127         }
 128
 129         private boolean read_old_config(BufferedReader r) throws IOException {
 130                 AltosConfigData cfg = new AltosConfigData();
 131                 for (;;) {
 132                         boolean done = false;
 133
 134                         /* The data starts with an upper case F character followed by a space */
 135                         r.mark(2);
 136                         int     first = r.read();
 137                         if (first == 'F') {
 138                                 int second =  r.read();
 139                                 if (second == ' ')
 140                                         done = true;
 141                         }
 142                         r.reset();
 143                         if (done)
 144                                 break;
 145
 146                         String line = r.readLine();
 147                         if (line == null)
 148                                 return false;
 149                         cfg.parse_line(line);
 150                 }
 151                 config = new AltosJson(cfg);
 152                 return true;
 153         }
 154
 155         private boolean read_old_data(BufferedReader r) throws IOException {
 156                 String line;
 157
 158                 data = new ArrayList<Byte>();
 159                 while ((line = r.readLine()) != null) {
 160                         String[] tokens = line.split("\\s+");
 161
 162                         /* Make sure there's at least a type and time */
 163                         if (tokens.length < 2)
 164                                 break;
 165
 166                         /* packet type */
 167                         if (tokens[0].length() != 1)
 168                                 break;
 169                         int start = data.size();
 170
 171                         if (config_data().log_format != AltosLib.AO_LOG_FORMAT_TINY) {
 172                                 data.add((byte) tokens[0].codePointAt(0));
 173
 174                                 int time = AltosLib.fromhex(tokens[1]);
 175
 176                                 data.add((byte) 0);
 177                                 data.add((byte) (time & 0xff));
 178                                 data.add((byte) (time >> 8));
 179                         }
 180                         if (tokens.length == 4) {
 181                                 /* Handle ancient log files */
 182                                 if (config_data().log_format == AltosLib.AO_LOG_FORMAT_TINY) {
 183                                         /*
 184                                          * Ancient TeleMini log files stored "extra" data to pretend
 185                                          * that it was a TeleMetrum device. Throw that away and
 186                                          * just save the actual log data.
 187                                          */
 188                                         int a = AltosLib.fromhex(tokens[2]);
 189                                         int b = AltosLib.fromhex(tokens[3]);
 190                                         if (a != 0)
 191                                                 b = 0x8000 | a;
 192                                         data.add((byte) (b & 0xff));
 193                                         data.add((byte) ((b >> 8)));
 194                                 } else {
 195                                         for (int i = 2; i < tokens.length; i++) {
 196                                                 int v = AltosLib.fromhex(tokens[i]);
 197                                                 data.add((byte) (v & 0xff));
 198                                                 data.add((byte) ((v >> 8)));
 199                                         }
 200                                         /* Re-compute the checksum byte */
 201                                         data.set(start + 1, (byte) (256 - AltosConvert.checksum(data, start, data.size() - start)));
 202                                 }
 203                         } else {
 204                                 for (int i = 2; i < tokens.length; i++)
 205                                         data.add((byte) AltosLib.fromhex(tokens[i]));
 206                                 /* Re-compute the checksum byte */
 207                                 data.set(start + 1, (byte) (256 - AltosConvert.checksum(data, start, data.size() - start)));
 208                         }
 209                 }
 210                 return true;
 211         }
 212
 213         private void read(Reader r) throws IOException {
 214                 BufferedReader  br = new BufferedReader(r);
 215
 216                 br.mark(1);
 217                 int c = br.read();
 218                 br.reset();
 219
 220                 if (c == '{') {
 221                         if (!read_config(br))
 222                                 throw new IOException("failed to read config");
 223                         if (!read_data(br))
 224                                 throw new IOException("failed to read data");
 225                 } else {
 226                         if (!read_old_config(br))
 227                                 throw new IOException("failed to read old config");
 228                         if (!read_old_data(br))
 229                                 throw new IOException("failed to read old data");
 230                 }
 231         }
 232
 233         /*
 234          * Public APIs for I/O
 235          */
 236         public void write(Writer w) throws IOException {
 237                 write_config(w);
 238                 write_data(w);
 239         }
 240
 241         public String toString() {
 242                 try {
 243                         Writer  w = new StringWriter();
 244
 245                         write(w);
 246                         return w.toString();
 247                 } catch (Exception e) {
 248                         return null;
 249                 }
 250         }
 251
 252         public void print() throws IOException {
 253                 System.out.printf("%s", toString());
 254         }
 255
 256         /*
 257          * Constructors
 258          */
 259         public AltosEepromNew(Reader r) throws IOException {
 260                 read(r);
 261         }
 262
 263         public AltosEepromNew(String s) throws IOException {
 264                 read(new StringReader(s));
 265         }
 266
 267         public AltosEepromNew(AltosJson config, ArrayList<Byte> data) {
 268                 this.config = config;
 269                 this.data = data;
 270         }
 271
 272         public AltosEepromNew(AltosConfigData config_data, ArrayList<Byte> data) {
 273                 this.config = new AltosJson(config_data);
 274                 this.data = data;
 275         }
 276
 277         public AltosEepromNew() {
 278         }
 279 }