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