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   1 /*
   2  * Copyright © 2010 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_14;
  20
  21 import java.util.*;
  22 import java.io.*;
  23 import java.nio.charset.Charset;
  24
  25 public class AltosLib {
  26         /* EEProm command letters */
  27         public static final int AO_LOG_FLIGHT = 'F';
  28         public static final int AO_LOG_SENSOR = 'A';
  29         public static final int AO_LOG_TEMP_VOLT = 'T';
  30         public static final int AO_LOG_DEPLOY = 'D';
  31         public static final int AO_LOG_STATE = 'S';
  32         public static final int AO_LOG_GPS_POS = 'P';
  33         public static final int AO_LOG_GPS_TIME = 'G';
  34         public static final int AO_LOG_GPS_LAT = 'N';
  35         public static final int AO_LOG_GPS_LON = 'W';
  36         public static final int AO_LOG_GPS_ALT = 'H';
  37         public static final int AO_LOG_GPS_SAT = 'V';
  38         public static final int AO_LOG_GPS_DATE = 'Y';
  39         public static final int AO_LOG_PRESSURE = 'P';
  40
  41         public static boolean is_gps_cmd(int cmd) {
  42                 switch (cmd) {
  43                 case AltosLib.AO_LOG_GPS_POS:
  44                 case AltosLib.AO_LOG_GPS_TIME:
  45                 case AltosLib.AO_LOG_GPS_LAT:
  46                 case AltosLib.AO_LOG_GPS_LON:
  47                 case AltosLib.AO_LOG_GPS_ALT:
  48                 case AltosLib.AO_LOG_GPS_SAT:
  49                 case AltosLib.AO_LOG_GPS_DATE:
  50                         return true;
  51                 }
  52                 return false;
  53         }
  54
  55         /* Added for header fields in eeprom files */
  56         public static final int AO_LOG_CONFIG_VERSION = 1000;
  57         public static final int AO_LOG_MAIN_DEPLOY = 1001;
  58         public static final int AO_LOG_APOGEE_DELAY = 1002;
  59         public static final int AO_LOG_RADIO_CHANNEL = 1003;
  60         public static final int AO_LOG_CALLSIGN = 1004;
  61         public static final int AO_LOG_ACCEL_CAL = 1005;
  62         public static final int AO_LOG_RADIO_CAL = 1006;
  63         public static final int AO_LOG_MAX_FLIGHT_LOG = 1007;
  64         public static final int AO_LOG_MANUFACTURER = 2000;
  65         public static final int AO_LOG_PRODUCT = 2001;
  66         public static final int AO_LOG_SERIAL_NUMBER = 2002;
  67         public static final int AO_LOG_LOG_FORMAT = 2003;
  68
  69         public static final int AO_LOG_FREQUENCY = 2004;
  70         public static final int AO_LOG_APOGEE_LOCKOUT = 2005;
  71         public static final int AO_LOG_RADIO_RATE = 2006;
  72         public static final int AO_LOG_IGNITE_MODE = 2007;
  73         public static final int AO_LOG_PAD_ORIENTATION = 2008;
  74         public static final int AO_LOG_RADIO_ENABLE = 2009;
  75         public static final int AO_LOG_AES_KEY = 2010;
  76         public static final int AO_LOG_APRS = 2011;
  77         public static final int AO_LOG_BEEP_SETTING = 2012;
  78         public static final int AO_LOG_TRACKER_SETTING = 2013;
  79         public static final int AO_LOG_PYRO_TIME = 2014;
  80         public static final int AO_LOG_APRS_ID = 2015;
  81         public static final int AO_LOG_ALTITUDE_32 = 2016;
  82
  83         /* Added for header fields in telemega files */
  84         public static final int AO_LOG_BARO_RESERVED = 3000;
  85         public static final int AO_LOG_BARO_SENS = 3001;
  86         public static final int AO_LOG_BARO_OFF = 3002;
  87         public static final int AO_LOG_BARO_TCS = 3004;
  88         public static final int AO_LOG_BARO_TCO = 3005;
  89         public static final int AO_LOG_BARO_TREF = 3006;
  90         public static final int AO_LOG_BARO_TEMPSENS = 3007;
  91         public static final int AO_LOG_BARO_CRC = 3008;
  92         public static final int AO_LOG_IMU_CAL = 3009;
  93
  94         public static final int AO_LOG_SOFTWARE_VERSION = 9999;
  95
  96         public final static int MISSING = 0x7fffffff;
  97
  98         /* Added to flag invalid records */
  99         public static final int AO_LOG_INVALID = -1;
 100
 101         /* Flight state numbers and names */
 102         public static final int ao_flight_startup = 0;
 103         public static final int ao_flight_idle = 1;
 104         public static final int ao_flight_pad = 2;
 105         public static final int ao_flight_boost = 3;
 106         public static final int ao_flight_fast = 4;
 107         public static final int ao_flight_coast = 5;
 108         public static final int ao_flight_drogue = 6;
 109         public static final int ao_flight_main = 7;
 110         public static final int ao_flight_landed = 8;
 111         public static final int ao_flight_invalid = 9;
 112         public static final int ao_flight_stateless = 10;
 113
 114         /* USB product IDs */
 115         public final static int vendor_altusmetrum = 0xfffe;
 116
 117         public final static int product_altusmetrum = 0x000a;
 118         public final static int product_telemetrum = 0x000b;
 119         public final static int product_teledongle = 0x000c;
 120         public final static int product_easytimer = 0x000d;
 121         public final static int product_telebt = 0x000e;
 122         public final static int product_telelaunch = 0x000f;
 123         public final static int product_telelco = 0x0010;
 124         public final static int product_telescience = 0x0011;
 125         public final static int product_telepyro =0x0012;
 126         public final static int product_telemega = 0x0023;
 127         public final static int product_megadongle = 0x0024;
 128         public final static int product_telegps = 0x0025;
 129         public final static int product_easymini = 0x0026;
 130         public final static int product_telemini = 0x0027;
 131         public final static int product_easymega = 0x0028;
 132         public final static int product_usbtrng = 0x0029;
 133         public final static int product_usbrelay = 0x002a;
 134         public final static int product_mpusb = 0x002b;
 135         public final static int product_easymotor = 0x002c;
 136         public final static int product_altusmetrum_min = 0x000a;
 137         public final static int product_altusmetrum_max = 0x002c;
 138
 139         public final static int product_any = 0x10000;
 140         public final static int product_basestation = 0x10000 + 1;
 141         public final static int product_altimeter = 0x10000 + 2;
 142
 143         public final static int gps_builtin = 0;
 144         public final static int gps_mosaic = 1;
 145
 146         public final static String[] gps_receiver_names = {
 147                 "Builtin", "Mosaic-X5"
 148         };
 149
 150         private static class Product {
 151                 final String    name;
 152                 final int       product;
 153
 154                 Product (String name, int product) {
 155                         this.name = name;
 156                         this.product = product;
 157                 }
 158         }
 159
 160         private static Product[] products = {
 161                 new Product("telemetrum", product_telemetrum),
 162                 new Product("teleballoon", product_telemetrum),
 163                 new Product("teledongle", product_teledongle),
 164                 new Product("easytimer", product_easytimer),
 165                 new Product("telebt", product_telebt),
 166                 new Product("telelaunch", product_telelaunch),
 167                 new Product("telelco", product_telelco),
 168                 new Product("telescience", product_telescience),
 169                 new Product("telepyro", product_telepyro),
 170                 new Product("telemega", product_telemega),
 171                 new Product("megadongle", product_megadongle),
 172                 new Product("telegps", product_telegps),
 173                 new Product("easymini", product_easymini),
 174                 new Product("telemini", product_telemini),
 175                 new Product("easymega", product_easymega),
 176                 new Product("easymotor", product_easymotor)
 177         };
 178
 179         public static int name_to_product(String name) {
 180                 String low = name.toLowerCase();
 181
 182                 for (int i = 0; i < products.length; i++)
 183                         if (low.startsWith(products[i].name))
 184                                 return products[i].product;
 185                 return product_any;
 186         }
 187
 188         public static boolean has_9dof(int device_type) {
 189                 return device_type == product_telemega || device_type == product_easymega;
 190         }
 191
 192         public static boolean has_radio(int device_type) {
 193                 return device_type != product_easymini && device_type != product_easymega;
 194         }
 195
 196         public static boolean has_gps(int device_type) {
 197                 return device_type == product_telemetrum ||
 198                         device_type == product_telemega ||
 199                         device_type == product_telegps;
 200         }
 201
 202         /* Bluetooth "identifier" (bluetooth sucks) */
 203         public final static String bt_product_telebt = "TeleBT";
 204
 205         /* "good" voltages */
 206
 207         public final static double ao_battery_good = 3.8;
 208         public final static double ao_igniter_good = 3.5;
 209
 210         /* Telemetry modes */
 211         public static final int ao_telemetry_off = 0;
 212         public static final int ao_telemetry_min = 1;
 213         public static final int ao_telemetry_standard = 1;
 214         public static final int ao_telemetry_0_9 = 2;
 215         public static final int ao_telemetry_0_8 = 3;
 216         public static final int ao_telemetry_max = 3;
 217
 218         private static final String[] ao_telemetry_name = {
 219                 "Off", "Standard Telemetry", "TeleMetrum v0.9", "TeleMetrum v0.8"
 220         };
 221
 222         public static final int ao_telemetry_rate_38400 = 0;
 223         public static final int ao_telemetry_rate_9600 = 1;
 224         public static final int ao_telemetry_rate_2400 = 2;
 225         public static final int ao_telemetry_rate_max = 2;
 226
 227         public static final Integer[] ao_telemetry_rate_values = {
 228                 38400, 9600, 2400
 229         };
 230
 231         public static final int ao_aprs_format_compressed = 0;
 232         public static final int ao_aprs_format_uncompressed = 1;
 233
 234         public static final String[] ao_aprs_format_name = {
 235                 "Compressed", "Uncompressed"
 236         };
 237
 238         public static final String[] ignite_mode_values = {
 239                 "Dual Deploy",
 240                 "Redundant Apogee",
 241                 "Redundant Main",
 242                 "Separation & Apogee",
 243         };
 244
 245         public static final String[]    pad_orientation_values_radio = {
 246                 "Antenna Up",
 247                 "Antenna Down",
 248         };
 249
 250         public static final String[]    pad_orientation_values_no_radio = {
 251                 "Beeper Up",
 252                 "Beeper Down",
 253         };
 254
 255         public static String[] pad_orientation_values(boolean radio) {
 256                 if (radio)
 257                         return pad_orientation_values_radio;
 258                 else
 259                         return pad_orientation_values_no_radio;
 260         }
 261
 262         public static final String launch_sites_url = "https://maps.altusmetrum.org/launch-sites.txt";
 263         public static final String launch_sites_env = "LAUNCH_SITES";
 264 //      public static final String launch_sites_url = "file:///home/keithp/misc/text/altusmetrum/AltOS/launch-sites.txt";
 265
 266         public static final String unit_info_url = "https://altusmetrum.org/cgi-bin/unitinfo.cgi?sn=%d";
 267         public static final String unit_info_env = "UNIT_INFO";
 268
 269         public static final int ao_telemetry_standard_len = 32;
 270         public static final int ao_telemetry_0_9_len = 95;
 271         public static final int ao_telemetry_0_8_len = 94;
 272
 273         private static final int[] ao_telemetry_len = {
 274                 0, 32, 95, 94
 275         };
 276
 277         private static HashMap<String,Integer>  string_to_state = new HashMap<String,Integer>();
 278
 279         private static boolean map_initialized = false;
 280
 281         public static void initialize_map()
 282         {
 283                 string_to_state.put("startup", ao_flight_startup);
 284                 string_to_state.put("idle", ao_flight_idle);
 285                 string_to_state.put("pad", ao_flight_pad);
 286                 string_to_state.put("boost", ao_flight_boost);
 287                 string_to_state.put("fast", ao_flight_fast);
 288                 string_to_state.put("coast", ao_flight_coast);
 289                 string_to_state.put("drogue", ao_flight_drogue);
 290                 string_to_state.put("apogee", ao_flight_coast);
 291                 string_to_state.put("main", ao_flight_main);
 292                 string_to_state.put("landed", ao_flight_landed);
 293                 string_to_state.put("invalid", ao_flight_invalid);
 294                 string_to_state.put("stateless", ao_flight_stateless);
 295                 map_initialized = true;
 296         }
 297
 298         public static int telemetry_len(int telemetry) {
 299                 if (telemetry <= ao_telemetry_max)
 300                         return ao_telemetry_len[telemetry];
 301                 throw new IllegalArgumentException(String.format("Invalid telemetry %d",
 302                                                                  telemetry));
 303         }
 304
 305         public static String telemetry_name(int telemetry) {
 306                 if (telemetry <= ao_telemetry_max)
 307                         return ao_telemetry_name[telemetry];
 308                 throw new IllegalArgumentException(String.format("Invalid telemetry %d",
 309                                                                  telemetry));
 310         }
 311
 312         private static int[] split_version(String version) {
 313                 String[] tokens = version.split("\\.");
 314                 int[] ret = new int[tokens.length];
 315                 for (int i = 0; i < tokens.length; i++)
 316                         ret[i] = Integer.parseInt(tokens[i]);
 317                 return ret;
 318         }
 319
 320         public static int compare_version(String version_a, String version_b) {
 321                 int[] a = split_version(version_a);
 322                 int[] b = split_version(version_b);
 323
 324                 for (int i = 0; i < Math.min(a.length, b.length); i++) {
 325                         if (a[i] < b[i])
 326                                 return -1;
 327                         if (a[i] > b[i])
 328                                 return 1;
 329                 }
 330                 if (a.length < b.length)
 331                         return -1;
 332                 if (a.length > b.length)
 333                         return 1;
 334                 return 0;
 335         }
 336
 337         private static String[] state_to_string = {
 338                 "startup",
 339                 "idle",
 340                 "pad",
 341                 "boost",
 342                 "fast",
 343                 "coast",
 344                 "drogue",
 345                 "main",
 346                 "landed",
 347                 "invalid",
 348                 "stateless",
 349         };
 350
 351         private static String[] state_to_string_capital = {
 352                 "Startup",
 353                 "Idle",
 354                 "Pad",
 355                 "Boost",
 356                 "Fast",
 357                 "Coast",
 358                 "Drogue",
 359                 "Main",
 360                 "Landed",
 361                 "Invalid",
 362                 "Stateless",
 363         };
 364
 365         public static int state(String state) {
 366                 if (!map_initialized)
 367                         initialize_map();
 368                 if (string_to_state.containsKey(state))
 369                         return string_to_state.get(state);
 370                 return ao_flight_invalid;
 371         }
 372
 373         public static String state_name(int state) {
 374                 if (state < 0 || state_to_string.length <= state)
 375                         return "invalid";
 376                 return state_to_string[state];
 377         }
 378
 379         public static String state_name_capital(int state) {
 380                 if (state < 0 || state_to_string.length <= state)
 381                         return "Invalid";
 382                 return state_to_string_capital[state];
 383         }
 384
 385         public static final int AO_GPS_VALID = (1 << 4);
 386         public static final int AO_GPS_RUNNING = (1 << 5);
 387         public static final int AO_GPS_DATE_VALID = (1 << 6);
 388         public static final int AO_GPS_NUM_SAT_SHIFT = 0;
 389         public static final int AO_GPS_NUM_SAT_MASK = 0xf;
 390
 391         public static final int AO_PAD_ORIENTATION_ANTENNA_UP = 0;
 392         public static final int AO_PAD_ORIENTATION_ANTENNA_DOWN = 1;
 393         public static final int AO_PAD_ORIENTATION_WORDS_UPRIGHT = 2;
 394         public static final int AO_PAD_ORIENTATION_WORDS_UPSIDEDOWN = 3;
 395         public static final int AO_PAD_ORIENTATION_BIG_PARTS_UP = 4;
 396         public static final int AO_PAD_ORIENTATION_BIG_PARTS_DOWN = 5;
 397
 398         public static final int AO_LOG_FORMAT_UNKNOWN = 0;
 399         public static final int AO_LOG_FORMAT_FULL = 1;
 400         public static final int AO_LOG_FORMAT_TINY = 2;
 401         public static final int AO_LOG_FORMAT_TELEMETRY = 3;
 402         public static final int AO_LOG_FORMAT_TELESCIENCE = 4;
 403         public static final int AO_LOG_FORMAT_TELEMEGA_OLD = 5;
 404         public static final int AO_LOG_FORMAT_EASYMINI1 = 6;
 405         public static final int AO_LOG_FORMAT_TELEMETRUM = 7;
 406         public static final int AO_LOG_FORMAT_TELEMINI2 = 8;
 407         public static final int AO_LOG_FORMAT_TELEGPS = 9;
 408         public static final int AO_LOG_FORMAT_TELEMEGA = 10;
 409         public static final int AO_LOG_FORMAT_DETHERM = 11;
 410         public static final int AO_LOG_FORMAT_TELEMINI3 = 12;
 411         public static final int AO_LOG_FORMAT_TELEFIRETWO = 13;
 412         public static final int AO_LOG_FORMAT_EASYMINI2 = 14;
 413         public static final int AO_LOG_FORMAT_TELEMEGA_3 = 15;
 414         public static final int AO_LOG_FORMAT_EASYMEGA_2 = 16;
 415         public static final int AO_LOG_FORMAT_TELESTATIC = 17;
 416         public static final int AO_LOG_FORMAT_MICROPEAK2 = 18;
 417         public static final int AO_LOG_FORMAT_TELEMEGA_4 = 19;
 418         public static final int AO_LOG_FORMAT_EASYMOTOR = 20;
 419         public static final int AO_LOG_FORMAT_TELEMEGA_5 = 21;
 420         public static final int AO_LOG_FORMAT_TELEMEGA_6 = 22;
 421         public static final int AO_LOG_FORMAT_EASYTIMER_2 = 23;
 422         public static final int AO_LOG_FORMAT_EASYMEGA_3 = 24;
 423         public static final int AO_LOG_FORMAT_TELEMEGA_7 = 25;
 424         public static final int AO_LOG_FORMAT_NONE = 127;
 425
 426         public static final int model_mpu6000 = 0;
 427         public static final int model_mpu9250 = 1;
 428         public static final int model_adxl375 = 2;
 429         public static final int model_bmx160 = 3;
 430         public static final int model_hmc5883 = 4;
 431         public static final int model_mmc5983 = 5;
 432         public static final int model_bmi088 = 6;
 433
 434         public static boolean isspace(int c) {
 435                 switch (c) {
 436                 case ' ':
 437                 case '\t':
 438                         return true;
 439                 }
 440                 return false;
 441         }
 442
 443         public static final boolean ishex(int c) {
 444                 if ('0' <= c && c <= '9')
 445                         return true;
 446                 if ('a' <= c && c <= 'f')
 447                         return true;
 448                 if ('A' <= c && c <= 'F')
 449                         return true;
 450                 return false;
 451         }
 452
 453         public static final boolean ishex(String s) {
 454                 for (int i = 0; i < s.length(); i++)
 455                         if (!ishex(s.charAt(i)))
 456                                 return false;
 457                 return true;
 458         }
 459
 460         public static int fromhex(int c) {
 461                 if ('0' <= c && c <= '9')
 462                         return c - '0';
 463                 if ('a' <= c && c <= 'f')
 464                         return c - 'a' + 10;
 465                 if ('A' <= c && c <= 'F')
 466                         return c - 'A' + 10;
 467                 return -1;
 468         }
 469
 470         public static int fromhex(String s) throws NumberFormatException {
 471                 int c, v = 0;
 472                 for (int i = 0; i < s.length(); i++) {
 473                         c = s.charAt(i);
 474                         if (!ishex(c)) {
 475                                 if (i == 0)
 476                                         throw new NumberFormatException(String.format("invalid hex \"%s\"", s));
 477                                 return v;
 478                         }
 479                         v = v * 16 + fromhex(c);
 480                 }
 481                 return v;
 482         }
 483
 484         public static boolean isdec(int c) {
 485                 if ('0' <= c && c <= '9')
 486                         return true;
 487                 return false;
 488         }
 489
 490         public static boolean isdec(String s) {
 491                 for (int i = 0; i < s.length(); i++)
 492                         if (!isdec(s.charAt(i)))
 493                                 return false;
 494                 return true;
 495         }
 496
 497         public static int fromdec(int c) {
 498                 if ('0' <= c && c <= '9')
 499                         return c - '0';
 500                 return -1;
 501         }
 502
 503         public static int int8(int[] bytes, int i) {
 504                 return (int) (byte) bytes[i];
 505         }
 506
 507         public static int uint8(int[] bytes, int i) {
 508                 return bytes[i];
 509         }
 510
 511         public static int int16(int[] bytes, int i) {
 512                 return (int) (short) (bytes[i] + (bytes[i+1] << 8));
 513         }
 514
 515         public static int uint16(int[] bytes, int i) {
 516                 return bytes[i] + (bytes[i+1] << 8);
 517         }
 518
 519         public static int uint32(int[] bytes, int i) {
 520                 return bytes[i] +
 521                         (bytes[i+1] << 8) +
 522                         (bytes[i+2] << 16) +
 523                         (bytes[i+3] << 24);
 524         }
 525
 526         public static int int32(int[] bytes, int i) {
 527                 return (int) uint32(bytes, i);
 528         }
 529
 530         public static final Charset     unicode_set = Charset.forName("UTF-8");
 531
 532         public static String string(int[] bytes, int s, int l) {
 533                 if (s + l > bytes.length) {
 534                         if (s > bytes.length) {
 535                                 s = bytes.length;
 536                                 l = 0;
 537                         } else {
 538                                 l = bytes.length - s;
 539                         }
 540                 }
 541
 542                 int i;
 543                 for (i = l - 1; i >= 0; i--)
 544                         if (bytes[s+i] != 0)
 545                                 break;
 546
 547                 l = i + 1;
 548                 byte[]  b = new byte[l];
 549
 550                 for (i = 0; i < l; i++)
 551                         b[i] = (byte) bytes[s+i];
 552                 String n = new String(b, unicode_set);
 553                 return n;
 554         }
 555
 556         public static int hexbyte(String s, int i) {
 557                 int c0, c1;
 558
 559                 if (s.length() < i + 2)
 560                         throw new NumberFormatException(String.format("invalid hex \"%s\"", s));
 561                 c0 = s.charAt(i);
 562                 if (!ishex(c0))
 563                         throw new NumberFormatException(String.format("invalid hex \"%c\"", c0));
 564                 c1 = s.charAt(i+1);
 565                 if (!ishex(c1))
 566                         throw new NumberFormatException(String.format("invalid hex \"%c\"", c1));
 567                 return fromhex(c0) * 16 + fromhex(c1);
 568         }
 569
 570         public static int[] hexbytes(String s) {
 571                 int     n;
 572                 int[]   r;
 573                 int     i;
 574
 575                 if ((s.length() & 1) != 0)
 576                         throw new NumberFormatException(String.format("invalid line \"%s\"", s));
 577                 byte[] bytes = s.getBytes(unicode_set);
 578                 n = bytes.length / 2;
 579                 r = new int[n];
 580                 for (i = 0; i < n; i++) {
 581                         int h = fromhex(bytes[(i << 1)]);
 582                         int l = fromhex(bytes[(i << 1) + 1]);
 583                         if (h < 0 || l < 0)
 584                                 throw new NumberFormatException(String.format("invalid hex \"%c%c\"",
 585                                                                               bytes[(i<<1)], bytes[(i<<1) + 1]));
 586                         r[i] = (h << 4) + l;
 587                 }
 588                 return r;
 589         }
 590
 591         public static long fromdec(String s) throws NumberFormatException {
 592                 int c;
 593                 long v = 0;
 594                 long sign = 1;
 595                 for (int i = 0; i < s.length(); i++) {
 596                         c = s.charAt(i);
 597                         if (i == 0 && c == '-') {
 598                                 sign = -1;
 599                         } else if (!isdec(c)) {
 600                                 if (i == 0)
 601                                         throw new NumberFormatException(String.format("invalid number \"%s\"", s));
 602                                 return v;
 603                         } else
 604                                 v = v * 10 + fromdec(c);
 605                 }
 606                 return v * sign;
 607         }
 608
 609         public static String gets(FileInputStream s) throws IOException {
 610                 int c;
 611                 String  line = "";
 612
 613                 while ((c = s.read()) != -1) {
 614                         if (c == '\r')
 615                                 continue;
 616                         if (c == '\n') {
 617                                 return line;
 618                         }
 619                         line = line + (char) c;
 620                 }
 621                 return null;
 622         }
 623
 624         public static String replace_extension(String input, String extension) {
 625                 int dot = input.lastIndexOf(".");
 626                 if (dot > 0)
 627                         input = input.substring(0,dot);
 628                 return input.concat(extension);
 629         }
 630
 631         public static File replace_extension(File input, String extension) {
 632                 return new File(replace_extension(input.getPath(), extension));
 633         }
 634
 635         public static String product_name(int product_id) {
 636                 switch (product_id) {
 637                 case product_altusmetrum: return "AltusMetrum";
 638                 case product_telemetrum: return "TeleMetrum";
 639                 case product_teledongle: return "TeleDongle";
 640                 case product_easytimer: return "EasyTimer";
 641                 case product_telebt: return "TeleBT";
 642                 case product_telelaunch: return "TeleLaunch";
 643                 case product_telelco: return "TeleLco";
 644                 case product_telescience: return "Telescience";
 645                 case product_telepyro: return "TelePyro";
 646                 case product_telemega: return "TeleMega";
 647                 case product_megadongle: return "MegaDongle";
 648                 case product_telegps: return "TeleGPS";
 649                 case product_easymini: return "EasyMini";
 650                 case product_telemini: return "TeleMini";
 651                 case product_easymega: return "EasyMega";
 652                 case product_easymotor: return "EasyMotor";
 653                 default: return "unknown";
 654                 }
 655         }
 656
 657         public static int product_id_from_log_format(int log_format) {
 658                 switch (log_format){
 659                 case AO_LOG_FORMAT_UNKNOWN:
 660                         return product_altusmetrum;
 661                 case AO_LOG_FORMAT_FULL:
 662                         return product_telemetrum;
 663                 case AO_LOG_FORMAT_TINY:
 664                         return product_telemini;
 665                 case AO_LOG_FORMAT_TELEMETRY:
 666                         return product_altusmetrum;
 667                 case AO_LOG_FORMAT_TELESCIENCE:
 668                         return product_telescience;
 669                 case AO_LOG_FORMAT_TELEMEGA_OLD:
 670                         return product_telemega;
 671                 case AO_LOG_FORMAT_EASYMINI1:
 672                         return product_easymini;
 673                 case AO_LOG_FORMAT_TELEMETRUM:
 674                         return product_telemetrum;
 675                 case AO_LOG_FORMAT_TELEMINI2:
 676                         return product_telemini;
 677                 case AO_LOG_FORMAT_TELEGPS:
 678                         return product_telegps;
 679                 case AO_LOG_FORMAT_TELEMEGA:
 680                         return product_telemega;
 681                 case AO_LOG_FORMAT_DETHERM:
 682                         return product_altusmetrum;
 683                 case AO_LOG_FORMAT_TELEMINI3:
 684                         return product_telemini;
 685                 case AO_LOG_FORMAT_TELEFIRETWO:
 686                         return product_altusmetrum;
 687                 case AO_LOG_FORMAT_EASYMINI2:
 688                         return product_easymini;
 689                 case AO_LOG_FORMAT_TELEMEGA_3:
 690                         return product_telemega;
 691                 case AO_LOG_FORMAT_EASYMEGA_2:
 692                 case AO_LOG_FORMAT_EASYMEGA_3:
 693                         return product_easymega;
 694                 case AO_LOG_FORMAT_TELESTATIC:
 695                         return product_altusmetrum;
 696                 case AO_LOG_FORMAT_MICROPEAK2:
 697                         return product_altusmetrum;
 698                 case AO_LOG_FORMAT_TELEMEGA_4:
 699                         return product_telemega;
 700                 case AO_LOG_FORMAT_EASYMOTOR:
 701                         return product_easymotor;
 702                 case AO_LOG_FORMAT_TELEMEGA_5:
 703                         return product_telemega;
 704                 case AO_LOG_FORMAT_TELEMEGA_6:
 705                         return product_telemega;
 706                 case AO_LOG_FORMAT_TELEMEGA_7:
 707                         return product_telemega;
 708                 case AO_LOG_FORMAT_NONE:
 709                         return product_altusmetrum;
 710                 default:
 711                         return product_altusmetrum;
 712                 }
 713         }
 714
 715         public static String igniter_name(int i) {
 716                 return String.format("Igniter %c", 'A' + i);
 717         }
 718
 719         public static String igniter_short_name(int i) {
 720                 return String.format("igniter_%c", 'a' + i);
 721         }
 722
 723         public static AltosRecordSet record_set(File file) throws FileNotFoundException, IOException {
 724                 FileInputStream in;
 725                 in = new FileInputStream(file);
 726                 if (file.getName().endsWith("telem")) {
 727                         return new AltosTelemetryFile(in);
 728                 } else if (file.getName().endsWith("eeprom")) {
 729                         return new AltosEepromFile(in);
 730                 } else {
 731                         String  name = file.getName();
 732                         int     dot = name.lastIndexOf('.');
 733                         String  extension;
 734
 735                         if (dot == -1)
 736                                 throw new IOException(String.format("%s (Missing extension)", file.toString()));
 737                         else {
 738                                 extension = name.substring(dot);
 739                                 throw new IOException(String.format("%s (Invalid extension '%s')",
 740                                                                     file.toString(),
 741                                                                     extension));
 742                         }
 743                 }
 744         }
 745
 746 }