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 <glob.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             batt_info->percentage_remaining = -1;
 142         } else if (BEGINS_WITH(last, "POWER_SUPPLY_CHARGE_NOW=")) {
 143             watt_as_unit = false;
 144             batt_info->remaining = atoi(walk + 1);
 145             batt_info->percentage_remaining = -1;
 146         } else if (BEGINS_WITH(last, "POWER_SUPPLY_CAPACITY=") && batt_info->remaining == -1) {
 147             batt_info->percentage_remaining = atoi(walk + 1);
 148         } else if (BEGINS_WITH(last, "POWER_SUPPLY_CURRENT_NOW="))
 149             batt_info->present_rate = abs(atoi(walk + 1));
 150         else if (BEGINS_WITH(last, "POWER_SUPPLY_VOLTAGE_NOW="))
 151             voltage = abs(atoi(walk + 1));
 152         /* on some systems POWER_SUPPLY_POWER_NOW does not exist, but actually
 153          * it is the same as POWER_SUPPLY_CURRENT_NOW but with μWh as
 154          * unit instead of μAh. We will calculate it as we need it
 155          * later. */
 156         else if (BEGINS_WITH(last, "POWER_SUPPLY_POWER_NOW="))
 157             batt_info->present_rate = abs(atoi(walk + 1));
 158         else if (BEGINS_WITH(last, "POWER_SUPPLY_STATUS=Charging"))
 159             batt_info->status = CS_CHARGING;
 160         else if (BEGINS_WITH(last, "POWER_SUPPLY_STATUS=Full"))
 161             batt_info->status = CS_FULL;
 162         else if (BEGINS_WITH(last, "POWER_SUPPLY_STATUS=Discharging"))
 163             batt_info->status = CS_DISCHARGING;
 164         else if (BEGINS_WITH(last, "POWER_SUPPLY_STATUS="))
 165             batt_info->status = CS_UNKNOWN;
 166         else if (BEGINS_WITH(last, "POWER_SUPPLY_CHARGE_FULL_DESIGN=") ||
 167                  BEGINS_WITH(last, "POWER_SUPPLY_ENERGY_FULL_DESIGN="))
 168             batt_info->full_design = atoi(walk + 1);
 169         else if (BEGINS_WITH(last, "POWER_SUPPLY_ENERGY_FULL=") ||
 170                  BEGINS_WITH(last, "POWER_SUPPLY_CHARGE_FULL="))
 171             batt_info->full_last = atoi(walk + 1);
 172     }
 173
 174     /* the difference between POWER_SUPPLY_ENERGY_NOW and
 175      * POWER_SUPPLY_CHARGE_NOW is the unit of measurement. The energy is
 176      * given in mWh, the charge in mAh. So calculate every value given in
 177      * ampere to watt */
 178     if (!watt_as_unit && voltage != -1) {
 179         batt_info->present_rate = (((float)voltage / 1000.0) * ((float)batt_info->present_rate / 1000.0));
 180         batt_info->remaining = (((float)voltage / 1000.0) * ((float)batt_info->remaining / 1000.0));
 181         batt_info->full_design = (((float)voltage / 1000.0) * ((float)batt_info->full_design / 1000.0));
 182         batt_info->full_last = (((float)voltage / 1000.0) * ((float)batt_info->full_last / 1000.0));
 183     }
 184 #elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
 185     int state;
 186     int sysctl_rslt;
 187     size_t sysctl_size = sizeof(sysctl_rslt);
 188
 189     if (sysctlbyname(BATT_LIFE, &sysctl_rslt, &sysctl_size, NULL, 0) != 0) {
 190         OUTPUT_FULL_TEXT(format_down);
 191         return false;
 192     }
 193
 194     batt_info->percentage_remaining = sysctl_rslt;
 195     if (sysctlbyname(BATT_TIME, &sysctl_rslt, &sysctl_size, NULL, 0) != 0) {
 196         OUTPUT_FULL_TEXT(format_down);
 197         return false;
 198     }
 199
 200     batt_info->seconds_remaining = sysctl_rslt * 60;
 201     if (sysctlbyname(BATT_STATE, &sysctl_rslt, &sysctl_size, NULL, 0) != 0) {
 202         OUTPUT_FULL_TEXT(format_down);
 203         return false;
 204     }
 205
 206     state = sysctl_rslt;
 207     if (state == 0 && batt_info->percentage_remaining == 100)
 208         batt_info->status = CS_FULL;
 209     else if ((state & ACPI_BATT_STAT_CHARGING) && batt_info->percentage_remaining < 100)
 210         batt_info->status = CS_CHARGING;
 211     else
 212         batt_info->status = CS_DISCHARGING;
 213 #elif defined(__OpenBSD__)
 214     /*
 215          * We're using apm(4) here, which is the interface to acpi(4) on amd64/i386 and
 216          * the generic interface on macppc/sparc64/zaurus, instead of using sysctl(3) and
 217          * probing acpi(4) devices.
 218          */
 219     struct apm_power_info apm_info;
 220     int apm_fd;
 221
 222     apm_fd = open("/dev/apm", O_RDONLY);
 223     if (apm_fd < 0) {
 224         OUTPUT_FULL_TEXT("can't open /dev/apm");
 225         return false;
 226     }
 227     if (ioctl(apm_fd, APM_IOC_GETPOWER, &apm_info) < 0)
 228         OUTPUT_FULL_TEXT("can't read power info");
 229
 230     close(apm_fd);
 231
 232     /* Don't bother to go further if there's no battery present. */
 233     if ((apm_info.battery_state == APM_BATTERY_ABSENT) ||
 234         (apm_info.battery_state == APM_BATT_UNKNOWN)) {
 235         OUTPUT_FULL_TEXT(format_down);
 236         return false;
 237     }
 238
 239     switch (apm_info.ac_state) {
 240         case APM_AC_OFF:
 241             batt_info->status = CS_DISCHARGING;
 242             break;
 243         case APM_AC_ON:
 244             batt_info->status = CS_CHARGING;
 245             break;
 246         default:
 247             /* If we don't know what's going on, just assume we're discharging. */
 248             batt_info->status = CS_DISCHARGING;
 249             break;
 250     }
 251
 252     batt_info->percentage_remaining = apm_info.battery_life;
 253
 254     /* Can't give a meaningful value for remaining minutes if we're charging. */
 255     if (batt_info->status != CS_CHARGING) {
 256         batt_info->seconds_remaining = apm_info.minutes_left * 60;
 257     }
 258 #elif defined(__NetBSD__)
 259     /*
 260      * Using envsys(4) via sysmon(4).
 261      */
 262     int fd, rval;
 263     bool is_found = false;
 264     char sensor_desc[16];
 265
 266     prop_dictionary_t dict;
 267     prop_array_t array;
 268     prop_object_iterator_t iter;
 269     prop_object_iterator_t iter2;
 270     prop_object_t obj, obj2, obj3, obj4, obj5;
 271
 272     if (number >= 0)
 273         (void)snprintf(sensor_desc, sizeof(sensor_desc), "acpibat%d", number);
 274
 275     fd = open("/dev/sysmon", O_RDONLY);
 276     if (fd < 0) {
 277         OUTPUT_FULL_TEXT("can't open /dev/sysmon");
 278         return false;
 279     }
 280
 281     rval = prop_dictionary_recv_ioctl(fd, ENVSYS_GETDICTIONARY, &dict);
 282     if (rval == -1) {
 283         close(fd);
 284         return false;
 285     }
 286
 287     if (prop_dictionary_count(dict) == 0) {
 288         prop_object_release(dict);
 289         close(fd);
 290         return false;
 291     }
 292
 293     iter = prop_dictionary_iterator(dict);
 294     if (iter == NULL) {
 295         prop_object_release(dict);
 296         close(fd);
 297     }
 298
 299     /* iterate over the dictionary returned by the kernel */
 300     while ((obj = prop_object_iterator_next(iter)) != NULL) {
 301         /* skip this dict if it's not what we're looking for */
 302         if (number < 0) {
 303             /* we want all batteries */
 304             if (!BEGINS_WITH(prop_dictionary_keysym_cstring_nocopy(obj),
 305                              "acpibat"))
 306                 continue;
 307         } else {
 308             /* we want a specific battery */
 309             if (strcmp(sensor_desc,
 310                        prop_dictionary_keysym_cstring_nocopy(obj)) != 0)
 311                 continue;
 312         }
 313
 314         is_found = true;
 315
 316         array = prop_dictionary_get_keysym(dict, obj);
 317         if (prop_object_type(array) != PROP_TYPE_ARRAY) {
 318             prop_object_iterator_release(iter);
 319             prop_object_release(dict);
 320             close(fd);
 321             return false;
 322         }
 323
 324         iter2 = prop_array_iterator(array);
 325         if (!iter2) {
 326             prop_object_iterator_release(iter);
 327             prop_object_release(dict);
 328             close(fd);
 329             return false;
 330         }
 331
 332         struct battery_info batt_buf = {
 333             .full_design = 0,
 334             .full_last = 0,
 335             .remaining = 0,
 336             .present_rate = 0,
 337             .status = CS_UNKNOWN,
 338         };
 339         int voltage = -1;
 340         bool watt_as_unit = false;
 341
 342         /* iterate over array of dicts specific to target battery */
 343         while ((obj2 = prop_object_iterator_next(iter2)) != NULL) {
 344             obj3 = prop_dictionary_get(obj2, "description");
 345
 346             if (obj3 == NULL)
 347                 continue;
 348
 349             if (strcmp("charging", prop_string_cstring_nocopy(obj3)) == 0) {
 350                 obj3 = prop_dictionary_get(obj2, "cur-value");
 351
 352                 if (prop_number_integer_value(obj3))
 353                     batt_buf.status = CS_CHARGING;
 354                 else
 355                     batt_buf.status = CS_DISCHARGING;
 356             } else if (strcmp("charge", prop_string_cstring_nocopy(obj3)) == 0) {
 357                 obj3 = prop_dictionary_get(obj2, "cur-value");
 358                 obj4 = prop_dictionary_get(obj2, "max-value");
 359                 obj5 = prop_dictionary_get(obj2, "type");
 360
 361                 batt_buf.remaining = prop_number_integer_value(obj3);
 362                 batt_buf.full_design = prop_number_integer_value(obj4);
 363
 364                 if (strcmp("Ampere hour", prop_string_cstring_nocopy(obj5)) == 0)
 365                     watt_as_unit = false;
 366                 else
 367                     watt_as_unit = true;
 368             } else if (strcmp("discharge rate", prop_string_cstring_nocopy(obj3)) == 0) {
 369                 obj3 = prop_dictionary_get(obj2, "cur-value");
 370                 batt_buf.present_rate = prop_number_integer_value(obj3);
 371             } else if (strcmp("charge rate", prop_string_cstring_nocopy(obj3)) == 0) {
 372                 obj3 = prop_dictionary_get(obj2, "cur-value");
 373                 batt_info->present_rate = prop_number_integer_value(obj3);
 374             } else if (strcmp("last full cap", prop_string_cstring_nocopy(obj3)) == 0) {
 375                 obj3 = prop_dictionary_get(obj2, "cur-value");
 376                 batt_buf.full_last = prop_number_integer_value(obj3);
 377             } else if (strcmp("voltage", prop_string_cstring_nocopy(obj3)) == 0) {
 378                 obj3 = prop_dictionary_get(obj2, "cur-value");
 379                 voltage = prop_number_integer_value(obj3);
 380             }
 381         }
 382         prop_object_iterator_release(iter2);
 383
 384         if (!watt_as_unit && voltage != -1) {
 385             batt_buf.present_rate = (((float)voltage / 1000.0) * ((float)batt_buf.present_rate / 1000.0));
 386             batt_buf.remaining = (((float)voltage / 1000.0) * ((float)batt_buf.remaining / 1000.0));
 387             batt_buf.full_design = (((float)voltage / 1000.0) * ((float)batt_buf.full_design / 1000.0));
 388             batt_buf.full_last = (((float)voltage / 1000.0) * ((float)batt_buf.full_last / 1000.0));
 389         }
 390
 391         if (batt_buf.remaining == batt_buf.full_design)
 392             batt_buf.status = CS_FULL;
 393
 394         add_battery_info(batt_info, &batt_buf);
 395     }
 396
 397     prop_object_iterator_release(iter);
 398     prop_object_release(dict);
 399     close(fd);
 400
 401     if (!is_found) {
 402         OUTPUT_FULL_TEXT(format_down);
 403         return false;
 404     }
 405
 406     batt_info->present_rate = abs(batt_info->present_rate);
 407 #endif
 408
 409     return true;
 410 }
 411
 412 /*
 413  * Populate batt_info with aggregate information about all batteries.
 414  * Returns false on error, and an error message will have been written.
 415  */
 416 static bool slurp_all_batteries(struct battery_info *batt_info, yajl_gen json_gen, char *buffer, const char *path, const char *format_down) {
 417 #if defined(LINUX)
 418     char *outwalk = buffer;
 419     bool is_found = false;
 420
 421     char *placeholder;
 422     char *globpath = sstrdup(path);
 423     if ((placeholder = strstr(path, "%d")) != NULL) {
 424         char *globplaceholder = globpath + (placeholder - path);
 425         *globplaceholder = '*';
 426         strcpy(globplaceholder + 1, placeholder + 2);
 427     }
 428
 429     if (!strcmp(globpath, path)) {
 430         OUTPUT_FULL_TEXT("no '%d' in battery path");
 431         return false;
 432     }
 433
 434     glob_t globbuf;
 435     if (glob(globpath, 0, NULL, &globbuf) == 0) {
 436         for (size_t i = 0; i < globbuf.gl_pathc; i++) {
 437             /* Probe to see if there is such a battery. */
 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, globbuf.gl_pathv[i], format_down))
 446                 return false;
 447
 448             is_found = true;
 449             add_battery_info(batt_info, &batt_buf);
 450         }
 451     }
 452     globfree(&globbuf);
 453     free(globpath);
 454
 455     if (!is_found) {
 456         OUTPUT_FULL_TEXT(format_down);
 457         return false;
 458     }
 459
 460     batt_info->present_rate = abs(batt_info->present_rate);
 461 #else
 462     /* FreeBSD and OpenBSD only report aggregates. NetBSD always
 463      * iterates through all batteries, so it's more efficient to
 464      * aggregate in slurp_battery_info. */
 465     return slurp_battery_info(batt_info, json_gen, buffer, -1, path, format_down);
 466 #endif
 467
 468     return true;
 469 }
 470
 471 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) {
 472     const char *walk;
 473     char *outwalk = buffer;
 474     struct battery_info batt_info = {
 475         .full_design = -1,
 476         .full_last = -1,
 477         .remaining = -1,
 478         .present_rate = -1,
 479         .seconds_remaining = -1,
 480         .percentage_remaining = -1,
 481         .status = CS_UNKNOWN,
 482     };
 483     bool colorful_output = false;
 484
 485 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__) || defined(__OpenBSD__)
 486     /* These OSes report battery stats in whole percent. */
 487     integer_battery_capacity = true;
 488 #endif
 489 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__) || defined(__OpenBSD__)
 490     /* These OSes report battery time in minutes. */
 491     hide_seconds = true;
 492 #endif
 493
 494     if (number < 0) {
 495         if (!slurp_all_batteries(&batt_info, json_gen, buffer, path, format_down))
 496             return;
 497     } else {
 498         if (!slurp_battery_info(&batt_info, json_gen, buffer, number, path, format_down))
 499             return;
 500     }
 501
 502     int full = (last_full_capacity ? batt_info.full_last : batt_info.full_design);
 503     if (full < 0 && batt_info.percentage_remaining < 0) {
 504         /* We have no physical measurements and no estimates. Nothing
 505          * much we can report, then. */
 506         OUTPUT_FULL_TEXT(format_down);
 507         return;
 508     }
 509
 510     if (batt_info.percentage_remaining < 0) {
 511         batt_info.percentage_remaining = (((float)batt_info.remaining / (float)full) * 100);
 512         /* Some batteries report POWER_SUPPLY_CHARGE_NOW=<full_design> when fully
 513          * charged, even though that’s plainly wrong. For people who chose to see
 514          * the percentage calculated based on the last full capacity, we clamp the
 515          * value to 100%, as that makes more sense.
 516          * See http://bugs.debian.org/785398 */
 517         if (last_full_capacity && batt_info.percentage_remaining > 100) {
 518             batt_info.percentage_remaining = 100;
 519         }
 520     }
 521
 522     if (batt_info.seconds_remaining < 0 && batt_info.present_rate > 0 && batt_info.status != CS_FULL) {
 523         if (batt_info.status == CS_CHARGING)
 524             batt_info.seconds_remaining = 3600.0 * (full - batt_info.remaining) / batt_info.present_rate;
 525         else if (batt_info.status == CS_DISCHARGING)
 526             batt_info.seconds_remaining = 3600.0 * batt_info.remaining / batt_info.present_rate;
 527         else
 528             batt_info.seconds_remaining = 0;
 529     }
 530
 531     if (batt_info.status == CS_DISCHARGING && low_threshold > 0) {
 532         if (batt_info.percentage_remaining >= 0 && strcasecmp(threshold_type, "percentage") == 0 && batt_info.percentage_remaining < low_threshold) {
 533             START_COLOR("color_bad");
 534             colorful_output = true;
 535         } else if (batt_info.seconds_remaining >= 0 && strcasecmp(threshold_type, "time") == 0 && batt_info.seconds_remaining < 60 * low_threshold) {
 536             START_COLOR("color_bad");
 537             colorful_output = true;
 538         }
 539     }
 540
 541 #define EAT_SPACE_FROM_OUTPUT_IF_NO_OUTPUT()                   \
 542     do {                                                       \
 543         if (outwalk == prevoutwalk) {                          \
 544             if (outwalk > buffer && isspace((int)outwalk[-1])) \
 545                 outwalk--;                                     \
 546             else if (isspace((int)*(walk + 1)))                \
 547                 walk++;                                        \
 548         }                                                      \
 549     } while (0)
 550
 551     for (walk = format; *walk != '\0'; walk++) {
 552         char *prevoutwalk = outwalk;
 553
 554         if (*walk != '%') {
 555             *(outwalk++) = *walk;
 556             continue;
 557         }
 558
 559         if (BEGINS_WITH(walk + 1, "status")) {
 560             const char *statusstr;
 561             switch (batt_info.status) {
 562                 case CS_CHARGING:
 563                     statusstr = status_chr;
 564                     break;
 565                 case CS_DISCHARGING:
 566                     statusstr = status_bat;
 567                     break;
 568                 case CS_FULL:
 569                     statusstr = status_full;
 570                     break;
 571                 default:
 572                     statusstr = status_unk;
 573             }
 574
 575             outwalk += sprintf(outwalk, "%s", statusstr);
 576             walk += strlen("status");
 577         } else if (BEGINS_WITH(walk + 1, "percentage")) {
 578             if (integer_battery_capacity) {
 579                 outwalk += sprintf(outwalk, "%.00f%s", batt_info.percentage_remaining, pct_mark);
 580             } else {
 581                 outwalk += sprintf(outwalk, "%.02f%s", batt_info.percentage_remaining, pct_mark);
 582             }
 583             walk += strlen("percentage");
 584         } else if (BEGINS_WITH(walk + 1, "remaining")) {
 585             if (batt_info.seconds_remaining >= 0) {
 586                 int seconds, hours, minutes;
 587
 588                 hours = batt_info.seconds_remaining / 3600;
 589                 seconds = batt_info.seconds_remaining - (hours * 3600);
 590                 minutes = seconds / 60;
 591                 seconds -= (minutes * 60);
 592
 593                 if (hide_seconds)
 594                     outwalk += sprintf(outwalk, "%02d:%02d",
 595                                        max(hours, 0), max(minutes, 0));
 596                 else
 597                     outwalk += sprintf(outwalk, "%02d:%02d:%02d",
 598                                        max(hours, 0), max(minutes, 0), max(seconds, 0));
 599             }
 600             walk += strlen("remaining");
 601             EAT_SPACE_FROM_OUTPUT_IF_NO_OUTPUT();
 602         } else if (BEGINS_WITH(walk + 1, "emptytime")) {
 603             if (batt_info.seconds_remaining >= 0) {
 604                 time_t empty_time = time(NULL) + batt_info.seconds_remaining;
 605                 struct tm *empty_tm = localtime(&empty_time);
 606
 607                 if (hide_seconds)
 608                     outwalk += sprintf(outwalk, "%02d:%02d",
 609                                        max(empty_tm->tm_hour, 0), max(empty_tm->tm_min, 0));
 610                 else
 611                     outwalk += sprintf(outwalk, "%02d:%02d:%02d",
 612                                        max(empty_tm->tm_hour, 0), max(empty_tm->tm_min, 0), max(empty_tm->tm_sec, 0));
 613             }
 614             walk += strlen("emptytime");
 615             EAT_SPACE_FROM_OUTPUT_IF_NO_OUTPUT();
 616         } else if (BEGINS_WITH(walk + 1, "consumption")) {
 617             if (batt_info.present_rate >= 0)
 618                 outwalk += sprintf(outwalk, "%1.2fW", batt_info.present_rate / 1e6);
 619
 620             walk += strlen("consumption");
 621             EAT_SPACE_FROM_OUTPUT_IF_NO_OUTPUT();
 622         }
 623     }
 624
 625     if (colorful_output)
 626         END_COLOR;
 627
 628     OUTPUT_FULL_TEXT(buffer);
 629 }