git.sur5r.net Git - i3/i3status/blob - src/print_battery_info.c

   1 // vim:ts=4:sw=4:expandtab
   2 #include <ctype.h>
   3 #include <time.h>
   4 #include <string.h>
   5 #include <stdlib.h>
   6 #include <stdio.h>
   7 #include <yajl/yajl_gen.h>
   8 #include <yajl/yajl_version.h>
   9
  10 #include "i3status.h"
  11
  12 #if defined(LINUX)
  13 #include <errno.h>
  14 #include <sys/stat.h>
  15 #include <sys/types.h>
  16 #endif
  17
  18 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
  19 #include <sys/types.h>
  20 #include <sys/sysctl.h>
  21 #include <dev/acpica/acpiio.h>
  22 #endif
  23
  24 #if defined(__OpenBSD__)
  25 #include <sys/types.h>
  26 #include <sys/ioctl.h>
  27 #include <sys/fcntl.h>
  28 #include <machine/apmvar.h>
  29 #endif
  30
  31 #if defined(__NetBSD__)
  32 #include <fcntl.h>
  33 #include <prop/proplib.h>
  34 #include <sys/envsys.h>
  35 #endif
  36
  37 typedef enum {
  38     CS_UNKNOWN,
  39     CS_DISCHARGING,
  40     CS_CHARGING,
  41     CS_FULL,
  42 } charging_status_t;
  43
  44 /* A description of the state of one or more batteries. */
  45 struct battery_info {
  46     /* measured properties */
  47     int full_design;  /* in uAh */
  48     int full_last;    /* in uAh */
  49     int remaining;    /* in uAh */
  50     int present_rate; /* in uA, always non-negative */
  51
  52     /* derived properties */
  53     int seconds_remaining;
  54     float percentage_remaining;
  55     charging_status_t status;
  56 };
  57
  58 #if defined(LINUX) || defined(__NetBSD__)
  59 /*
  60  * Add batt_info data to acc.
  61  */
  62 static void add_battery_info(struct battery_info *acc, const struct battery_info *batt_info) {
  63     if (acc->remaining < 0) {
  64         /* initialize accumulator so we can add to it */
  65         acc->full_design = 0;
  66         acc->full_last = 0;
  67         acc->remaining = 0;
  68         acc->present_rate = 0;
  69     }
  70
  71     acc->full_design += batt_info->full_design;
  72     acc->full_last += batt_info->full_last;
  73     acc->remaining += batt_info->remaining;
  74
  75     /* make present_rate negative for discharging and positive for charging */
  76     int present_rate = (acc->status == CS_DISCHARGING ? -1 : 1) * acc->present_rate;
  77     present_rate += (batt_info->status == CS_DISCHARGING ? -1 : 1) * batt_info->present_rate;
  78
  79     /* merge status */
  80     switch (acc->status) {
  81         case CS_UNKNOWN:
  82             acc->status = batt_info->status;
  83             break;
  84
  85         case CS_DISCHARGING:
  86             if (present_rate > 0)
  87                 acc->status = CS_CHARGING;
  88             /* else if batt_info is DISCHARGING: no conflict
  89              * else if batt_info is CHARGING: present_rate should indicate that
  90              * else if batt_info is FULL: but something else is discharging */
  91             break;
  92
  93         case CS_CHARGING:
  94             if (present_rate < 0)
  95                 acc->status = CS_DISCHARGING;
  96             /* else if batt_info is DISCHARGING: present_rate should indicate that
  97              * else if batt_info is CHARGING: no conflict
  98              * else if batt_info is FULL: but something else is charging */
  99             break;
 100
 101         case CS_FULL:
 102             if (batt_info->status != CS_UNKNOWN)
 103                 acc->status = batt_info->status;
 104             /* else: retain FULL, since it is more specific than UNKNOWN */
 105             break;
 106     }
 107
 108     acc->present_rate = abs(present_rate);
 109 }
 110 #endif
 111
 112 static bool slurp_battery_info(struct battery_info *batt_info, yajl_gen json_gen, char *buffer, int number, const char *path, const char *format_down) {
 113     char *outwalk = buffer;
 114
 115 #if defined(LINUX)
 116     char buf[1024];
 117     const char *walk, *last;
 118     bool watt_as_unit = false;
 119     int voltage = -1;
 120     char batpath[512];
 121     sprintf(batpath, path, number);
 122     INSTANCE(batpath);
 123
 124     if (!slurp(batpath, buf, sizeof(buf))) {
 125         OUTPUT_FULL_TEXT(format_down);
 126         return false;
 127     }
 128
 129     for (walk = buf, last = buf; (walk - buf) < 1024; walk++) {
 130         if (*walk == '\n') {
 131             last = walk + 1;
 132             continue;
 133         }
 134
 135         if (*walk != '=')
 136             continue;
 137
 138         if (BEGINS_WITH(last, "POWER_SUPPLY_ENERGY_NOW=")) {
 139             watt_as_unit = true;
 140             batt_info->remaining = atoi(walk + 1);
 141         } else if (BEGINS_WITH(last, "POWER_SUPPLY_CHARGE_NOW=")) {
 142             watt_as_unit = false;
 143             batt_info->remaining = atoi(walk + 1);
 144         } else if (BEGINS_WITH(last, "POWER_SUPPLY_CURRENT_NOW="))
 145             batt_info->present_rate = abs(atoi(walk + 1));
 146         else if (BEGINS_WITH(last, "POWER_SUPPLY_VOLTAGE_NOW="))
 147             voltage = abs(atoi(walk + 1));
 148         /* on some systems POWER_SUPPLY_POWER_NOW does not exist, but actually
 149          * it is the same as POWER_SUPPLY_CURRENT_NOW but with μWh as
 150          * unit instead of μAh. We will calculate it as we need it
 151          * later. */
 152         else if (BEGINS_WITH(last, "POWER_SUPPLY_POWER_NOW="))
 153             batt_info->present_rate = abs(atoi(walk + 1));
 154         else if (BEGINS_WITH(last, "POWER_SUPPLY_STATUS=Charging"))
 155             batt_info->status = CS_CHARGING;
 156         else if (BEGINS_WITH(last, "POWER_SUPPLY_STATUS=Full"))
 157             batt_info->status = CS_FULL;
 158         else if (BEGINS_WITH(last, "POWER_SUPPLY_STATUS=Discharging"))
 159             batt_info->status = CS_DISCHARGING;
 160         else if (BEGINS_WITH(last, "POWER_SUPPLY_STATUS="))
 161             batt_info->status = CS_UNKNOWN;
 162         else if (BEGINS_WITH(last, "POWER_SUPPLY_CHARGE_FULL_DESIGN=") ||
 163                  BEGINS_WITH(last, "POWER_SUPPLY_ENERGY_FULL_DESIGN="))
 164             batt_info->full_design = atoi(walk + 1);
 165         else if (BEGINS_WITH(last, "POWER_SUPPLY_ENERGY_FULL=") ||
 166                  BEGINS_WITH(last, "POWER_SUPPLY_CHARGE_FULL="))
 167             batt_info->full_last = atoi(walk + 1);
 168     }
 169
 170     /* the difference between POWER_SUPPLY_ENERGY_NOW and
 171      * POWER_SUPPLY_CHARGE_NOW is the unit of measurement. The energy is
 172      * given in mWh, the charge in mAh. So calculate every value given in
 173      * ampere to watt */
 174     if (!watt_as_unit && voltage != -1) {
 175         batt_info->present_rate = (((float)voltage / 1000.0) * ((float)batt_info->present_rate / 1000.0));
 176         batt_info->remaining = (((float)voltage / 1000.0) * ((float)batt_info->remaining / 1000.0));
 177         batt_info->full_design = (((float)voltage / 1000.0) * ((float)batt_info->full_design / 1000.0));
 178         batt_info->full_last = (((float)voltage / 1000.0) * ((float)batt_info->full_last / 1000.0));
 179     }
 180 #elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
 181     int state;
 182     int sysctl_rslt;
 183     size_t sysctl_size = sizeof(sysctl_rslt);
 184
 185     if (sysctlbyname(BATT_LIFE, &sysctl_rslt, &sysctl_size, NULL, 0) != 0) {
 186         OUTPUT_FULL_TEXT(format_down);
 187         return false;
 188     }
 189
 190     batt_info->percentage_remaining = sysctl_rslt;
 191     if (sysctlbyname(BATT_TIME, &sysctl_rslt, &sysctl_size, NULL, 0) != 0) {
 192         OUTPUT_FULL_TEXT(format_down);
 193         return false;
 194     }
 195
 196     batt_info->seconds_remaining = sysctl_rslt * 60;
 197     if (sysctlbyname(BATT_STATE, &sysctl_rslt, &sysctl_size, NULL, 0) != 0) {
 198         OUTPUT_FULL_TEXT(format_down);
 199         return false;
 200     }
 201
 202     state = sysctl_rslt;
 203     if (state == 0 && batt_info->percentage_remaining == 100)
 204         batt_info->status = CS_FULL;
 205     else if ((state & ACPI_BATT_STAT_CHARGING) && batt_info->percentage_remaining < 100)
 206         batt_info->status = CS_CHARGING;
 207     else
 208         batt_info->status = CS_DISCHARGING;
 209 #elif defined(__OpenBSD__)
 210     /*
 211          * We're using apm(4) here, which is the interface to acpi(4) on amd64/i386 and
 212          * the generic interface on macppc/sparc64/zaurus, instead of using sysctl(3) and
 213          * probing acpi(4) devices.
 214          */
 215     struct apm_power_info apm_info;
 216     int apm_fd;
 217
 218     apm_fd = open("/dev/apm", O_RDONLY);
 219     if (apm_fd < 0) {
 220         OUTPUT_FULL_TEXT("can't open /dev/apm");
 221         return false;
 222     }
 223     if (ioctl(apm_fd, APM_IOC_GETPOWER, &apm_info) < 0)
 224         OUTPUT_FULL_TEXT("can't read power info");
 225
 226     close(apm_fd);
 227
 228     /* Don't bother to go further if there's no battery present. */
 229     if ((apm_info.battery_state == APM_BATTERY_ABSENT) ||
 230         (apm_info.battery_state == APM_BATT_UNKNOWN)) {
 231         OUTPUT_FULL_TEXT(format_down);
 232         return false;
 233     }
 234
 235     switch (apm_info.ac_state) {
 236         case APM_AC_OFF:
 237             batt_info->status = CS_DISCHARGING;
 238             break;
 239         case APM_AC_ON:
 240             batt_info->status = CS_CHARGING;
 241             break;
 242         default:
 243             /* If we don't know what's going on, just assume we're discharging. */
 244             batt_info->status = CS_DISCHARGING;
 245             break;
 246     }
 247
 248     batt_info->percentage_remaining = apm_info.battery_life;
 249
 250     /* Can't give a meaningful value for remaining minutes if we're charging. */
 251     if (batt_info->status != CS_CHARGING) {
 252         batt_info->seconds_remaining = apm_info.minutes_left * 60;
 253     }
 254 #elif defined(__NetBSD__)
 255     /*
 256      * Using envsys(4) via sysmon(4).
 257      */
 258     int fd, rval;
 259     bool is_found = false;
 260     char sensor_desc[16];
 261
 262     prop_dictionary_t dict;
 263     prop_array_t array;
 264     prop_object_iterator_t iter;
 265     prop_object_iterator_t iter2;
 266     prop_object_t obj, obj2, obj3, obj4, obj5;
 267
 268     if (number >= 0)
 269         (void)snprintf(sensor_desc, sizeof(sensor_desc), "acpibat%d", number);
 270
 271     fd = open("/dev/sysmon", O_RDONLY);
 272     if (fd < 0) {
 273         OUTPUT_FULL_TEXT("can't open /dev/sysmon");
 274         return false;
 275     }
 276
 277     rval = prop_dictionary_recv_ioctl(fd, ENVSYS_GETDICTIONARY, &dict);
 278     if (rval == -1) {
 279         close(fd);
 280         return false;
 281     }
 282
 283     if (prop_dictionary_count(dict) == 0) {
 284         prop_object_release(dict);
 285         close(fd);
 286         return false;
 287     }
 288
 289     iter = prop_dictionary_iterator(dict);
 290     if (iter == NULL) {
 291         prop_object_release(dict);
 292         close(fd);
 293     }
 294
 295     /* iterate over the dictionary returned by the kernel */
 296     while ((obj = prop_object_iterator_next(iter)) != NULL) {
 297         /* skip this dict if it's not what we're looking for */
 298         if (number < 0) {
 299             /* we want all batteries */
 300             if (!BEGINS_WITH(prop_dictionary_keysym_cstring_nocopy(obj),
 301                              "acpibat"))
 302                 continue;
 303         } else {
 304             /* we want a specific battery */
 305             if (strcmp(sensor_desc,
 306                        prop_dictionary_keysym_cstring_nocopy(obj)) != 0)
 307                 continue;
 308         }
 309
 310         is_found = true;
 311
 312         array = prop_dictionary_get_keysym(dict, obj);
 313         if (prop_object_type(array) != PROP_TYPE_ARRAY) {
 314             prop_object_iterator_release(iter);
 315             prop_object_release(dict);
 316             close(fd);
 317             return false;
 318         }
 319
 320         iter2 = prop_array_iterator(array);
 321         if (!iter2) {
 322             prop_object_iterator_release(iter);
 323             prop_object_release(dict);
 324             close(fd);
 325             return false;
 326         }
 327
 328         struct battery_info batt_buf = {
 329             .full_design = 0,
 330             .full_last = 0,
 331             .remaining = 0,
 332             .present_rate = 0,
 333             .status = CS_UNKNOWN,
 334         };
 335         int voltage = -1;
 336         bool watt_as_unit = false;
 337
 338         /* iterate over array of dicts specific to target battery */
 339         while ((obj2 = prop_object_iterator_next(iter2)) != NULL) {
 340             obj3 = prop_dictionary_get(obj2, "description");
 341
 342             if (obj3 == NULL)
 343                 continue;
 344
 345             if (strcmp("charging", prop_string_cstring_nocopy(obj3)) == 0) {
 346                 obj3 = prop_dictionary_get(obj2, "cur-value");
 347
 348                 if (prop_number_integer_value(obj3))
 349                     batt_buf.status = CS_CHARGING;
 350                 else
 351                     batt_buf.status = CS_DISCHARGING;
 352             } else if (strcmp("charge", prop_string_cstring_nocopy(obj3)) == 0) {
 353                 obj3 = prop_dictionary_get(obj2, "cur-value");
 354                 obj4 = prop_dictionary_get(obj2, "max-value");
 355                 obj5 = prop_dictionary_get(obj2, "type");
 356
 357                 batt_buf.remaining = prop_number_integer_value(obj3);
 358                 batt_buf.full_design = prop_number_integer_value(obj4);
 359
 360                 if (strcmp("Ampere hour", prop_string_cstring_nocopy(obj5)) == 0)
 361                     watt_as_unit = false;
 362                 else
 363                     watt_as_unit = true;
 364             } else if (strcmp("discharge rate", prop_string_cstring_nocopy(obj3)) == 0) {
 365                 obj3 = prop_dictionary_get(obj2, "cur-value");
 366                 batt_buf.present_rate = prop_number_integer_value(obj3);
 367             } else if (strcmp("charge rate", prop_string_cstring_nocopy(obj3)) == 0) {
 368                 obj3 = prop_dictionary_get(obj2, "cur-value");
 369                 batt_info->present_rate = prop_number_integer_value(obj3);
 370             } else if (strcmp("last full cap", prop_string_cstring_nocopy(obj3)) == 0) {
 371                 obj3 = prop_dictionary_get(obj2, "cur-value");
 372                 batt_buf.full_last = prop_number_integer_value(obj3);
 373             } else if (strcmp("voltage", prop_string_cstring_nocopy(obj3)) == 0) {
 374                 obj3 = prop_dictionary_get(obj2, "cur-value");
 375                 voltage = prop_number_integer_value(obj3);
 376             }
 377         }
 378         prop_object_iterator_release(iter2);
 379
 380         if (!watt_as_unit && voltage != -1) {
 381             batt_buf.present_rate = (((float)voltage / 1000.0) * ((float)batt_buf.present_rate / 1000.0));
 382             batt_buf.remaining = (((float)voltage / 1000.0) * ((float)batt_buf.remaining / 1000.0));
 383             batt_buf.full_design = (((float)voltage / 1000.0) * ((float)batt_buf.full_design / 1000.0));
 384             batt_buf.full_last = (((float)voltage / 1000.0) * ((float)batt_buf.full_last / 1000.0));
 385         }
 386
 387         if (batt_buf.remaining == batt_buf.full_design)
 388             batt_buf.status = CS_FULL;
 389
 390         add_battery_info(batt_info, &batt_buf);
 391     }
 392
 393     prop_object_iterator_release(iter);
 394     prop_object_release(dict);
 395     close(fd);
 396
 397     if (!is_found) {
 398         OUTPUT_FULL_TEXT(format_down);
 399         return false;
 400     }
 401
 402     batt_info->present_rate = abs(batt_info->present_rate);
 403 #endif
 404
 405     return true;
 406 }
 407
 408 /*
 409  * Populate batt_info with aggregate information about all batteries.
 410  * Returns false on error, and an error message will have been written.
 411  */
 412 static bool slurp_all_batteries(struct battery_info *batt_info, yajl_gen json_gen, char *buffer, const char *path, const char *format_down) {
 413 #if defined(LINUX)
 414     char *outwalk = buffer;
 415     bool is_found = false;
 416
 417     /* 1,000 batteries should be enough for anyone */
 418     for (int i = 0; i < 1000; i++) {
 419         char batpath[1024];
 420         (void)snprintf(batpath, sizeof(batpath), path, i);
 421
 422         if (!strcmp(batpath, path)) {
 423             OUTPUT_FULL_TEXT("no '%d' in battery path");
 424             return false;
 425         }
 426
 427         /* Probe to see if there is such a battery. */
 428         struct stat sb;
 429         if (stat(batpath, &sb) != 0) {
 430             /* No such file, then we are done, assuming sysfs files have sequential numbers. */
 431             if (errno == ENOENT)
 432                 break;
 433
 434             OUTPUT_FULL_TEXT(format_down);
 435             return false;
 436         }
 437
 438         struct battery_info batt_buf = {
 439             .full_design = 0,
 440             .full_last = 0,
 441             .remaining = 0,
 442             .present_rate = 0,
 443             .status = CS_UNKNOWN,
 444         };
 445         if (!slurp_battery_info(&batt_buf, json_gen, buffer, i, path, format_down))
 446             return false;
 447
 448         is_found = true;
 449         add_battery_info(batt_info, &batt_buf);
 450     }
 451
 452     if (!is_found) {
 453         OUTPUT_FULL_TEXT(format_down);
 454         return false;
 455     }
 456
 457     batt_info->present_rate = abs(batt_info->present_rate);
 458 #else
 459     /* FreeBSD and OpenBSD only report aggregates. NetBSD always
 460      * iterates through all batteries, so it's more efficient to
 461      * aggregate in slurp_battery_info. */
 462     return slurp_battery_info(batt_info, json_gen, buffer, -1, path, format_down);
 463 #endif
 464
 465     return true;
 466 }
 467
 468 void print_battery_info(yajl_gen json_gen, char *buffer, int number, const char *path, const char *format, const char *format_down, const char *status_chr, const char *status_bat, const char *status_unk, const char *status_full, int low_threshold, char *threshold_type, bool last_full_capacity, bool integer_battery_capacity, bool hide_seconds) {
 469     const char *walk;
 470     char *outwalk = buffer;
 471     struct battery_info batt_info = {
 472         .full_design = -1,
 473         .full_last = -1,
 474         .remaining = -1,
 475         .present_rate = -1,
 476         .seconds_remaining = -1,
 477         .percentage_remaining = -1,
 478         .status = CS_UNKNOWN,
 479     };
 480     bool colorful_output = false;
 481
 482 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__) || defined(__OpenBSD__)
 483     /* These OSes report battery stats in whole percent. */
 484     integer_battery_capacity = true;
 485 #endif
 486 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
 487     /* These OSes report battery time in minutes. */
 488     hide_seconds = true;
 489 #endif
 490
 491     if (number < 0) {
 492         if (!slurp_all_batteries(&batt_info, json_gen, buffer, path, format_down))
 493             return;
 494     } else {
 495         if (!slurp_battery_info(&batt_info, json_gen, buffer, number, path, format_down))
 496             return;
 497     }
 498
 499     int full = (last_full_capacity ? batt_info.full_last : batt_info.full_design);
 500     if (full < 0 && batt_info.percentage_remaining < 0) {
 501         /* We have no physical measurements and no estimates. Nothing
 502          * much we can report, then. */
 503         OUTPUT_FULL_TEXT(format_down);
 504         return;
 505     }
 506
 507     if (batt_info.percentage_remaining < 0) {
 508         batt_info.percentage_remaining = (((float)batt_info.remaining / (float)full) * 100);
 509         /* Some batteries report POWER_SUPPLY_CHARGE_NOW=<full_design> when fully
 510          * charged, even though that’s plainly wrong. For people who chose to see
 511          * the percentage calculated based on the last full capacity, we clamp the
 512          * value to 100%, as that makes more sense.
 513          * See http://bugs.debian.org/785398 */
 514         if (last_full_capacity && batt_info.percentage_remaining > 100) {
 515             batt_info.percentage_remaining = 100;
 516         }
 517     }
 518
 519     if (batt_info.seconds_remaining < 0 && batt_info.present_rate > 0 && batt_info.status != CS_FULL) {
 520         if (batt_info.status == CS_CHARGING)
 521             batt_info.seconds_remaining = 3600.0 * (full - batt_info.remaining) / batt_info.present_rate;
 522         else if (batt_info.status == CS_DISCHARGING)
 523             batt_info.seconds_remaining = 3600.0 * batt_info.remaining / batt_info.present_rate;
 524         else
 525             batt_info.seconds_remaining = 0;
 526     }
 527
 528     if (batt_info.status == CS_DISCHARGING && low_threshold > 0) {
 529         if (batt_info.percentage_remaining >= 0 && strcasecmp(threshold_type, "percentage") == 0 && batt_info.percentage_remaining < low_threshold) {
 530             START_COLOR("color_bad");
 531             colorful_output = true;
 532         } else if (batt_info.seconds_remaining >= 0 && strcasecmp(threshold_type, "time") == 0 && batt_info.seconds_remaining < 60 * low_threshold) {
 533             START_COLOR("color_bad");
 534             colorful_output = true;
 535         }
 536     }
 537
 538 #define EAT_SPACE_FROM_OUTPUT_IF_NO_OUTPUT()                   \
 539     do {                                                       \
 540         if (outwalk == prevoutwalk) {                          \
 541             if (outwalk > buffer && isspace((int)outwalk[-1])) \
 542                 outwalk--;                                     \
 543             else if (isspace((int)*(walk + 1)))                \
 544                 walk++;                                        \
 545         }                                                      \
 546     } while (0)
 547
 548     for (walk = format; *walk != '\0'; walk++) {
 549         char *prevoutwalk = outwalk;
 550
 551         if (*walk != '%') {
 552             *(outwalk++) = *walk;
 553             continue;
 554         }
 555
 556         if (BEGINS_WITH(walk + 1, "status")) {
 557             const char *statusstr;
 558             switch (batt_info.status) {
 559                 case CS_CHARGING:
 560                     statusstr = status_chr;
 561                     break;
 562                 case CS_DISCHARGING:
 563                     statusstr = status_bat;
 564                     break;
 565                 case CS_FULL:
 566                     statusstr = status_full;
 567                     break;
 568                 default:
 569                     statusstr = status_unk;
 570             }
 571
 572             outwalk += sprintf(outwalk, "%s", statusstr);
 573             walk += strlen("status");
 574         } else if (BEGINS_WITH(walk + 1, "percentage")) {
 575             if (integer_battery_capacity) {
 576                 outwalk += sprintf(outwalk, "%.00f%s", batt_info.percentage_remaining, pct_mark);
 577             } else {
 578                 outwalk += sprintf(outwalk, "%.02f%s", batt_info.percentage_remaining, pct_mark);
 579             }
 580             walk += strlen("percentage");
 581         } else if (BEGINS_WITH(walk + 1, "remaining")) {
 582             if (batt_info.seconds_remaining >= 0) {
 583                 int seconds, hours, minutes;
 584
 585                 hours = batt_info.seconds_remaining / 3600;
 586                 seconds = batt_info.seconds_remaining - (hours * 3600);
 587                 minutes = seconds / 60;
 588                 seconds -= (minutes * 60);
 589
 590                 if (hide_seconds)
 591                     outwalk += sprintf(outwalk, "%02d:%02d",
 592                                        max(hours, 0), max(minutes, 0));
 593                 else
 594                     outwalk += sprintf(outwalk, "%02d:%02d:%02d",
 595                                        max(hours, 0), max(minutes, 0), max(seconds, 0));
 596             }
 597             walk += strlen("remaining");
 598             EAT_SPACE_FROM_OUTPUT_IF_NO_OUTPUT();
 599         } else if (BEGINS_WITH(walk + 1, "emptytime")) {
 600             if (batt_info.seconds_remaining >= 0) {
 601                 time_t empty_time = time(NULL) + batt_info.seconds_remaining;
 602                 struct tm *empty_tm = localtime(&empty_time);
 603
 604                 if (hide_seconds)
 605                     outwalk += sprintf(outwalk, "%02d:%02d",
 606                                        max(empty_tm->tm_hour, 0), max(empty_tm->tm_min, 0));
 607                 else
 608                     outwalk += sprintf(outwalk, "%02d:%02d:%02d",
 609                                        max(empty_tm->tm_hour, 0), max(empty_tm->tm_min, 0), max(empty_tm->tm_sec, 0));
 610             }
 611             walk += strlen("emptytime");
 612             EAT_SPACE_FROM_OUTPUT_IF_NO_OUTPUT();
 613         } else if (BEGINS_WITH(walk + 1, "consumption")) {
 614             if (batt_info.present_rate >= 0)
 615                 outwalk += sprintf(outwalk, "%1.2fW", batt_info.present_rate / 1e6);
 616
 617             walk += strlen("consumption");
 618             EAT_SPACE_FROM_OUTPUT_IF_NO_OUTPUT();
 619         }
 620     }
 621
 622     if (colorful_output)
 623         END_COLOR;
 624
 625     OUTPUT_FULL_TEXT(buffer);
 626 }