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 >= 0) {
 179         if (batt_info->present_rate > 0) {
 180             batt_info->present_rate = (((float)voltage / 1000.0) * ((float)batt_info->present_rate / 1000.0));
 181         }
 182         if (batt_info->remaining > 0) {
 183             batt_info->remaining = (((float)voltage / 1000.0) * ((float)batt_info->remaining / 1000.0));
 184         }
 185         if (batt_info->full_design > 0) {
 186             batt_info->full_design = (((float)voltage / 1000.0) * ((float)batt_info->full_design / 1000.0));
 187         }
 188         if (batt_info->full_last > 0) {
 189             batt_info->full_last = (((float)voltage / 1000.0) * ((float)batt_info->full_last / 1000.0));
 190         }
 191     }
 192 #elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
 193     int state;
 194     int sysctl_rslt;
 195     size_t sysctl_size = sizeof(sysctl_rslt);
 196
 197     if (sysctlbyname(BATT_LIFE, &sysctl_rslt, &sysctl_size, NULL, 0) != 0) {
 198         OUTPUT_FULL_TEXT(format_down);
 199         return false;
 200     }
 201
 202     batt_info->percentage_remaining = sysctl_rslt;
 203     if (sysctlbyname(BATT_TIME, &sysctl_rslt, &sysctl_size, NULL, 0) != 0) {
 204         OUTPUT_FULL_TEXT(format_down);
 205         return false;
 206     }
 207
 208     batt_info->seconds_remaining = sysctl_rslt * 60;
 209     if (sysctlbyname(BATT_STATE, &sysctl_rslt, &sysctl_size, NULL, 0) != 0) {
 210         OUTPUT_FULL_TEXT(format_down);
 211         return false;
 212     }
 213
 214     state = sysctl_rslt;
 215     if (state == 0 && batt_info->percentage_remaining == 100)
 216         batt_info->status = CS_FULL;
 217     else if ((state & ACPI_BATT_STAT_CHARGING) && batt_info->percentage_remaining < 100)
 218         batt_info->status = CS_CHARGING;
 219     else
 220         batt_info->status = CS_DISCHARGING;
 221 #elif defined(__OpenBSD__)
 222     /*
 223          * We're using apm(4) here, which is the interface to acpi(4) on amd64/i386 and
 224          * the generic interface on macppc/sparc64/zaurus, instead of using sysctl(3) and
 225          * probing acpi(4) devices.
 226          */
 227     struct apm_power_info apm_info;
 228     int apm_fd;
 229
 230     apm_fd = open("/dev/apm", O_RDONLY);
 231     if (apm_fd < 0) {
 232         OUTPUT_FULL_TEXT("can't open /dev/apm");
 233         return false;
 234     }
 235     if (ioctl(apm_fd, APM_IOC_GETPOWER, &apm_info) < 0)
 236         OUTPUT_FULL_TEXT("can't read power info");
 237
 238     close(apm_fd);
 239
 240     /* Don't bother to go further if there's no battery present. */
 241     if ((apm_info.battery_state == APM_BATTERY_ABSENT) ||
 242         (apm_info.battery_state == APM_BATT_UNKNOWN)) {
 243         OUTPUT_FULL_TEXT(format_down);
 244         return false;
 245     }
 246
 247     switch (apm_info.ac_state) {
 248         case APM_AC_OFF:
 249             batt_info->status = CS_DISCHARGING;
 250             break;
 251         case APM_AC_ON:
 252             batt_info->status = CS_CHARGING;
 253             break;
 254         default:
 255             /* If we don't know what's going on, just assume we're discharging. */
 256             batt_info->status = CS_DISCHARGING;
 257             break;
 258     }
 259
 260     batt_info->percentage_remaining = apm_info.battery_life;
 261
 262     /* Can't give a meaningful value for remaining minutes if we're charging. */
 263     if (batt_info->status != CS_CHARGING) {
 264         batt_info->seconds_remaining = apm_info.minutes_left * 60;
 265     }
 266 #elif defined(__NetBSD__)
 267     /*
 268      * Using envsys(4) via sysmon(4).
 269      */
 270     int fd, rval;
 271     bool is_found = false;
 272     char sensor_desc[16];
 273
 274     prop_dictionary_t dict;
 275     prop_array_t array;
 276     prop_object_iterator_t iter;
 277     prop_object_iterator_t iter2;
 278     prop_object_t obj, obj2, obj3, obj4, obj5;
 279
 280     if (number >= 0)
 281         (void)snprintf(sensor_desc, sizeof(sensor_desc), "acpibat%d", number);
 282
 283     fd = open("/dev/sysmon", O_RDONLY);
 284     if (fd < 0) {
 285         OUTPUT_FULL_TEXT("can't open /dev/sysmon");
 286         return false;
 287     }
 288
 289     rval = prop_dictionary_recv_ioctl(fd, ENVSYS_GETDICTIONARY, &dict);
 290     if (rval == -1) {
 291         close(fd);
 292         return false;
 293     }
 294
 295     if (prop_dictionary_count(dict) == 0) {
 296         prop_object_release(dict);
 297         close(fd);
 298         return false;
 299     }
 300
 301     iter = prop_dictionary_iterator(dict);
 302     if (iter == NULL) {
 303         prop_object_release(dict);
 304         close(fd);
 305     }
 306
 307     /* iterate over the dictionary returned by the kernel */
 308     while ((obj = prop_object_iterator_next(iter)) != NULL) {
 309         /* skip this dict if it's not what we're looking for */
 310         if (number < 0) {
 311             /* we want all batteries */
 312             if (!BEGINS_WITH(prop_dictionary_keysym_cstring_nocopy(obj),
 313                              "acpibat"))
 314                 continue;
 315         } else {
 316             /* we want a specific battery */
 317             if (strcmp(sensor_desc,
 318                        prop_dictionary_keysym_cstring_nocopy(obj)) != 0)
 319                 continue;
 320         }
 321
 322         is_found = true;
 323
 324         array = prop_dictionary_get_keysym(dict, obj);
 325         if (prop_object_type(array) != PROP_TYPE_ARRAY) {
 326             prop_object_iterator_release(iter);
 327             prop_object_release(dict);
 328             close(fd);
 329             return false;
 330         }
 331
 332         iter2 = prop_array_iterator(array);
 333         if (!iter2) {
 334             prop_object_iterator_release(iter);
 335             prop_object_release(dict);
 336             close(fd);
 337             return false;
 338         }
 339
 340         struct battery_info batt_buf = {
 341             .full_design = 0,
 342             .full_last = 0,
 343             .remaining = 0,
 344             .present_rate = 0,
 345             .status = CS_UNKNOWN,
 346         };
 347         int voltage = -1;
 348         bool watt_as_unit = false;
 349
 350         /* iterate over array of dicts specific to target battery */
 351         while ((obj2 = prop_object_iterator_next(iter2)) != NULL) {
 352             obj3 = prop_dictionary_get(obj2, "description");
 353
 354             if (obj3 == NULL)
 355                 continue;
 356
 357             if (strcmp("charging", prop_string_cstring_nocopy(obj3)) == 0) {
 358                 obj3 = prop_dictionary_get(obj2, "cur-value");
 359
 360                 if (prop_number_integer_value(obj3))
 361                     batt_buf.status = CS_CHARGING;
 362                 else
 363                     batt_buf.status = CS_DISCHARGING;
 364             } else if (strcmp("charge", prop_string_cstring_nocopy(obj3)) == 0) {
 365                 obj3 = prop_dictionary_get(obj2, "cur-value");
 366                 obj4 = prop_dictionary_get(obj2, "max-value");
 367                 obj5 = prop_dictionary_get(obj2, "type");
 368
 369                 batt_buf.remaining = prop_number_integer_value(obj3);
 370                 batt_buf.full_design = prop_number_integer_value(obj4);
 371
 372                 if (strcmp("Ampere hour", prop_string_cstring_nocopy(obj5)) == 0)
 373                     watt_as_unit = false;
 374                 else
 375                     watt_as_unit = true;
 376             } else if (strcmp("discharge rate", prop_string_cstring_nocopy(obj3)) == 0) {
 377                 obj3 = prop_dictionary_get(obj2, "cur-value");
 378                 batt_buf.present_rate = prop_number_integer_value(obj3);
 379             } else if (strcmp("charge rate", prop_string_cstring_nocopy(obj3)) == 0) {
 380                 obj3 = prop_dictionary_get(obj2, "cur-value");
 381                 batt_info->present_rate = prop_number_integer_value(obj3);
 382             } else if (strcmp("last full cap", prop_string_cstring_nocopy(obj3)) == 0) {
 383                 obj3 = prop_dictionary_get(obj2, "cur-value");
 384                 batt_buf.full_last = prop_number_integer_value(obj3);
 385             } else if (strcmp("voltage", prop_string_cstring_nocopy(obj3)) == 0) {
 386                 obj3 = prop_dictionary_get(obj2, "cur-value");
 387                 voltage = prop_number_integer_value(obj3);
 388             }
 389         }
 390         prop_object_iterator_release(iter2);
 391
 392         if (!watt_as_unit && voltage != -1) {
 393             batt_buf.present_rate = (((float)voltage / 1000.0) * ((float)batt_buf.present_rate / 1000.0));
 394             batt_buf.remaining = (((float)voltage / 1000.0) * ((float)batt_buf.remaining / 1000.0));
 395             batt_buf.full_design = (((float)voltage / 1000.0) * ((float)batt_buf.full_design / 1000.0));
 396             batt_buf.full_last = (((float)voltage / 1000.0) * ((float)batt_buf.full_last / 1000.0));
 397         }
 398
 399         if (batt_buf.remaining == batt_buf.full_design)
 400             batt_buf.status = CS_FULL;
 401
 402         add_battery_info(batt_info, &batt_buf);
 403     }
 404
 405     prop_object_iterator_release(iter);
 406     prop_object_release(dict);
 407     close(fd);
 408
 409     if (!is_found) {
 410         OUTPUT_FULL_TEXT(format_down);
 411         return false;
 412     }
 413
 414     batt_info->present_rate = abs(batt_info->present_rate);
 415 #endif
 416
 417     return true;
 418 }
 419
 420 /*
 421  * Populate batt_info with aggregate information about all batteries.
 422  * Returns false on error, and an error message will have been written.
 423  */
 424 static bool slurp_all_batteries(struct battery_info *batt_info, yajl_gen json_gen, char *buffer, const char *path, const char *format_down) {
 425 #if defined(LINUX)
 426     char *outwalk = buffer;
 427     bool is_found = false;
 428
 429     char *placeholder;
 430     char *globpath = sstrdup(path);
 431     if ((placeholder = strstr(path, "%d")) != NULL) {
 432         char *globplaceholder = globpath + (placeholder - path);
 433         *globplaceholder = '*';
 434         strcpy(globplaceholder + 1, placeholder + 2);
 435     }
 436
 437     if (!strcmp(globpath, path)) {
 438         OUTPUT_FULL_TEXT("no '%d' in battery path");
 439         return false;
 440     }
 441
 442     glob_t globbuf;
 443     if (glob(globpath, 0, NULL, &globbuf) == 0) {
 444         for (size_t i = 0; i < globbuf.gl_pathc; i++) {
 445             /* Probe to see if there is such a battery. */
 446             struct battery_info batt_buf = {
 447                 .full_design = 0,
 448                 .full_last = 0,
 449                 .remaining = 0,
 450                 .present_rate = 0,
 451                 .status = CS_UNKNOWN,
 452             };
 453             if (!slurp_battery_info(&batt_buf, json_gen, buffer, i, globbuf.gl_pathv[i], format_down))
 454                 return false;
 455
 456             is_found = true;
 457             add_battery_info(batt_info, &batt_buf);
 458         }
 459     }
 460     globfree(&globbuf);
 461     free(globpath);
 462
 463     if (!is_found) {
 464         OUTPUT_FULL_TEXT(format_down);
 465         return false;
 466     }
 467
 468     batt_info->present_rate = abs(batt_info->present_rate);
 469 #else
 470     /* FreeBSD and OpenBSD only report aggregates. NetBSD always
 471      * iterates through all batteries, so it's more efficient to
 472      * aggregate in slurp_battery_info. */
 473     return slurp_battery_info(batt_info, json_gen, buffer, -1, path, format_down);
 474 #endif
 475
 476     return true;
 477 }
 478
 479 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) {
 480     const char *walk;
 481     char *outwalk = buffer;
 482     struct battery_info batt_info = {
 483         .full_design = -1,
 484         .full_last = -1,
 485         .remaining = -1,
 486         .present_rate = -1,
 487         .seconds_remaining = -1,
 488         .percentage_remaining = -1,
 489         .status = CS_UNKNOWN,
 490     };
 491     bool colorful_output = false;
 492
 493 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__) || defined(__OpenBSD__)
 494     /* These OSes report battery stats in whole percent. */
 495     integer_battery_capacity = true;
 496 #endif
 497 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__) || defined(__OpenBSD__)
 498     /* These OSes report battery time in minutes. */
 499     hide_seconds = true;
 500 #endif
 501
 502     if (number < 0) {
 503         if (!slurp_all_batteries(&batt_info, json_gen, buffer, path, format_down))
 504             return;
 505     } else {
 506         if (!slurp_battery_info(&batt_info, json_gen, buffer, number, path, format_down))
 507             return;
 508     }
 509
 510     // *Choose* a measure of the 'full' battery. It is whichever is better of
 511     // the battery's (hardware-given) design capacity (batt_info.full_design)
 512     // and the battery's last known good charge (batt_info.full_last).
 513     // We prefer the design capacity, but use the last capacity if we don't have it,
 514     // or if we are asked to (last_full_capacity == true); but similarly we use
 515     // the design capacity if we don't have the last capacity.
 516     // If we don't have either then both full_design and full_last < 0,
 517     // which implies full < 0, which bails out on the following line.
 518     int full = batt_info.full_design;
 519     if (full < 0 || (last_full_capacity && batt_info.full_last >= 0)) {
 520         full = batt_info.full_last;
 521     }
 522     if (full < 0 && batt_info.remaining < 0 && batt_info.percentage_remaining < 0) {
 523         /* We have no physical measurements and no estimates. Nothing
 524          * much we can report, then. */
 525         OUTPUT_FULL_TEXT(format_down);
 526         return;
 527     }
 528
 529     if (batt_info.percentage_remaining < 0) {
 530         batt_info.percentage_remaining = (((float)batt_info.remaining / (float)full) * 100);
 531         /* Some batteries report POWER_SUPPLY_CHARGE_NOW=<full_design> when fully
 532          * charged, even though that’s plainly wrong. For people who chose to see
 533          * the percentage calculated based on the last full capacity, we clamp the
 534          * value to 100%, as that makes more sense.
 535          * See http://bugs.debian.org/785398 */
 536         if (last_full_capacity && batt_info.percentage_remaining > 100) {
 537             batt_info.percentage_remaining = 100;
 538         }
 539     }
 540
 541     if (batt_info.seconds_remaining < 0 && batt_info.present_rate > 0 && batt_info.status != CS_FULL) {
 542         if (batt_info.status == CS_CHARGING)
 543             batt_info.seconds_remaining = 3600.0 * (full - batt_info.remaining) / batt_info.present_rate;
 544         else if (batt_info.status == CS_DISCHARGING)
 545             batt_info.seconds_remaining = 3600.0 * batt_info.remaining / batt_info.present_rate;
 546         else
 547             batt_info.seconds_remaining = 0;
 548     }
 549
 550     if (batt_info.status == CS_DISCHARGING && low_threshold > 0) {
 551         if (batt_info.percentage_remaining >= 0 && strcasecmp(threshold_type, "percentage") == 0 && batt_info.percentage_remaining < low_threshold) {
 552             START_COLOR("color_bad");
 553             colorful_output = true;
 554         } else if (batt_info.seconds_remaining >= 0 && strcasecmp(threshold_type, "time") == 0 && batt_info.seconds_remaining < 60 * low_threshold) {
 555             START_COLOR("color_bad");
 556             colorful_output = true;
 557         }
 558     }
 559
 560 #define EAT_SPACE_FROM_OUTPUT_IF_NO_OUTPUT()                   \
 561     do {                                                       \
 562         if (outwalk == prevoutwalk) {                          \
 563             if (outwalk > buffer && isspace((int)outwalk[-1])) \
 564                 outwalk--;                                     \
 565             else if (isspace((int)*(walk + 1)))                \
 566                 walk++;                                        \
 567         }                                                      \
 568     } while (0)
 569
 570     for (walk = format; *walk != '\0'; walk++) {
 571         char *prevoutwalk = outwalk;
 572
 573         if (*walk != '%') {
 574             *(outwalk++) = *walk;
 575             continue;
 576         }
 577
 578         if (BEGINS_WITH(walk + 1, "status")) {
 579             const char *statusstr;
 580             switch (batt_info.status) {
 581                 case CS_CHARGING:
 582                     statusstr = status_chr;
 583                     break;
 584                 case CS_DISCHARGING:
 585                     statusstr = status_bat;
 586                     break;
 587                 case CS_FULL:
 588                     statusstr = status_full;
 589                     break;
 590                 default:
 591                     statusstr = status_unk;
 592             }
 593
 594             outwalk += sprintf(outwalk, "%s", statusstr);
 595             walk += strlen("status");
 596         } else if (BEGINS_WITH(walk + 1, "percentage")) {
 597             if (integer_battery_capacity) {
 598                 outwalk += sprintf(outwalk, "%.00f%s", batt_info.percentage_remaining, pct_mark);
 599             } else {
 600                 outwalk += sprintf(outwalk, "%.02f%s", batt_info.percentage_remaining, pct_mark);
 601             }
 602             walk += strlen("percentage");
 603         } else if (BEGINS_WITH(walk + 1, "remaining")) {
 604             if (batt_info.seconds_remaining >= 0) {
 605                 int seconds, hours, minutes;
 606
 607                 hours = batt_info.seconds_remaining / 3600;
 608                 seconds = batt_info.seconds_remaining - (hours * 3600);
 609                 minutes = seconds / 60;
 610                 seconds -= (minutes * 60);
 611
 612                 if (hide_seconds)
 613                     outwalk += sprintf(outwalk, "%02d:%02d",
 614                                        max(hours, 0), max(minutes, 0));
 615                 else
 616                     outwalk += sprintf(outwalk, "%02d:%02d:%02d",
 617                                        max(hours, 0), max(minutes, 0), max(seconds, 0));
 618             }
 619             walk += strlen("remaining");
 620             EAT_SPACE_FROM_OUTPUT_IF_NO_OUTPUT();
 621         } else if (BEGINS_WITH(walk + 1, "emptytime")) {
 622             if (batt_info.seconds_remaining >= 0) {
 623                 time_t empty_time = time(NULL) + batt_info.seconds_remaining;
 624                 set_timezone(NULL); /* Use local time. */
 625                 struct tm *empty_tm = localtime(&empty_time);
 626
 627                 if (hide_seconds)
 628                     outwalk += sprintf(outwalk, "%02d:%02d",
 629                                        max(empty_tm->tm_hour, 0), max(empty_tm->tm_min, 0));
 630                 else
 631                     outwalk += sprintf(outwalk, "%02d:%02d:%02d",
 632                                        max(empty_tm->tm_hour, 0), max(empty_tm->tm_min, 0), max(empty_tm->tm_sec, 0));
 633             }
 634             walk += strlen("emptytime");
 635             EAT_SPACE_FROM_OUTPUT_IF_NO_OUTPUT();
 636         } else if (BEGINS_WITH(walk + 1, "consumption")) {
 637             if (batt_info.present_rate >= 0)
 638                 outwalk += sprintf(outwalk, "%1.2fW", batt_info.present_rate / 1e6);
 639
 640             walk += strlen("consumption");
 641             EAT_SPACE_FROM_OUTPUT_IF_NO_OUTPUT();
 642         }
 643     }
 644
 645     if (colorful_output)
 646         END_COLOR;
 647
 648     OUTPUT_FULL_TEXT(buffer);
 649 }