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 <stdio.h>
   4 #include <stdlib.h>
   5 #include <string.h>
   6 #include <time.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 <dev/acpica/acpiio.h>
  20 #include <sys/sysctl.h>
  21 #include <sys/types.h>
  22 #endif
  23
  24 #if defined(__DragonFly__)
  25 #include <sys/fcntl.h>
  26 #endif
  27
  28 #if defined(__OpenBSD__)
  29 #include <machine/apmvar.h>
  30 #include <sys/fcntl.h>
  31 #include <sys/ioctl.h>
  32 #include <sys/types.h>
  33 #endif
  34
  35 #if defined(__NetBSD__)
  36 #include <fcntl.h>
  37 #include <prop/proplib.h>
  38 #include <sys/envsys.h>
  39 #endif
  40
  41 typedef enum {
  42     CS_UNKNOWN,
  43     CS_DISCHARGING,
  44     CS_CHARGING,
  45     CS_FULL,
  46 } charging_status_t;
  47
  48 /* A description of the state of one or more batteries. */
  49 struct battery_info {
  50     /* measured properties */
  51     int full_design;  /* in uAh */
  52     int full_last;    /* in uAh */
  53     int remaining;    /* in uAh */
  54     int present_rate; /* in uA, always non-negative */
  55
  56     /* derived properties */
  57     int seconds_remaining;
  58     float percentage_remaining;
  59     charging_status_t status;
  60 };
  61
  62 #if defined(__DragonFly__)
  63 #define ACPIDEV "/dev/acpi"
  64 static int acpifd;
  65
  66 static bool acpi_init(void) {
  67     if (acpifd == 0) {
  68         acpifd = open(ACPIDEV, O_RDWR);
  69         if (acpifd == -1)
  70             acpifd = open(ACPIDEV, O_RDONLY);
  71         if (acpifd == -1)
  72             return false;
  73     }
  74     return true;
  75 }
  76 #endif
  77
  78 #if defined(LINUX) || defined(__NetBSD__)
  79 /*
  80  * Add batt_info data to acc.
  81  */
  82 static void add_battery_info(struct battery_info *acc, const struct battery_info *batt_info) {
  83     if (acc->remaining < 0) {
  84         /* initialize accumulator so we can add to it */
  85         acc->full_design = 0;
  86         acc->full_last = 0;
  87         acc->remaining = 0;
  88         acc->present_rate = 0;
  89     }
  90
  91     acc->full_design += batt_info->full_design;
  92     acc->full_last += batt_info->full_last;
  93     acc->remaining += batt_info->remaining;
  94
  95     /* make present_rate negative for discharging and positive for charging */
  96     int present_rate = (acc->status == CS_DISCHARGING ? -1 : 1) * acc->present_rate;
  97     present_rate += (batt_info->status == CS_DISCHARGING ? -1 : 1) * batt_info->present_rate;
  98
  99     /* merge status */
 100     switch (acc->status) {
 101         case CS_UNKNOWN:
 102             acc->status = batt_info->status;
 103             break;
 104
 105         case CS_DISCHARGING:
 106             if (present_rate > 0)
 107                 acc->status = CS_CHARGING;
 108             /* else if batt_info is DISCHARGING: no conflict
 109              * else if batt_info is CHARGING: present_rate should indicate that
 110              * else if batt_info is FULL: but something else is discharging */
 111             break;
 112
 113         case CS_CHARGING:
 114             if (present_rate < 0)
 115                 acc->status = CS_DISCHARGING;
 116             /* else if batt_info is DISCHARGING: present_rate should indicate that
 117              * else if batt_info is CHARGING: no conflict
 118              * else if batt_info is FULL: but something else is charging */
 119             break;
 120
 121         case CS_FULL:
 122             if (batt_info->status != CS_UNKNOWN)
 123                 acc->status = batt_info->status;
 124             /* else: retain FULL, since it is more specific than UNKNOWN */
 125             break;
 126     }
 127
 128     acc->present_rate = abs(present_rate);
 129 }
 130 #endif
 131
 132 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) {
 133     char *outwalk = buffer;
 134
 135 #if defined(LINUX)
 136     char buf[1024];
 137     const char *walk, *last;
 138     bool watt_as_unit = false;
 139     int voltage = -1;
 140     char batpath[512];
 141     sprintf(batpath, path, number);
 142     INSTANCE(batpath);
 143
 144     if (!slurp(batpath, buf, sizeof(buf))) {
 145         OUTPUT_FULL_TEXT(format_down);
 146         return false;
 147     }
 148
 149     for (walk = buf, last = buf; (walk - buf) < 1024; walk++) {
 150         if (*walk == '\n') {
 151             last = walk + 1;
 152             continue;
 153         }
 154
 155         if (*walk != '=')
 156             continue;
 157
 158         if (BEGINS_WITH(last, "POWER_SUPPLY_ENERGY_NOW=")) {
 159             watt_as_unit = true;
 160             batt_info->remaining = atoi(walk + 1);
 161             batt_info->percentage_remaining = -1;
 162         } else if (BEGINS_WITH(last, "POWER_SUPPLY_CHARGE_NOW=")) {
 163             watt_as_unit = false;
 164             batt_info->remaining = atoi(walk + 1);
 165             batt_info->percentage_remaining = -1;
 166         } else if (BEGINS_WITH(last, "POWER_SUPPLY_CAPACITY=") && batt_info->remaining == -1) {
 167             batt_info->percentage_remaining = atoi(walk + 1);
 168         } else if (BEGINS_WITH(last, "POWER_SUPPLY_CURRENT_NOW="))
 169             batt_info->present_rate = abs(atoi(walk + 1));
 170         else if (BEGINS_WITH(last, "POWER_SUPPLY_VOLTAGE_NOW="))
 171             voltage = abs(atoi(walk + 1));
 172         /* on some systems POWER_SUPPLY_POWER_NOW does not exist, but actually
 173          * it is the same as POWER_SUPPLY_CURRENT_NOW but with μWh as
 174          * unit instead of μAh. We will calculate it as we need it
 175          * later. */
 176         else if (BEGINS_WITH(last, "POWER_SUPPLY_POWER_NOW="))
 177             batt_info->present_rate = abs(atoi(walk + 1));
 178         else if (BEGINS_WITH(last, "POWER_SUPPLY_STATUS=Charging"))
 179             batt_info->status = CS_CHARGING;
 180         else if (BEGINS_WITH(last, "POWER_SUPPLY_STATUS=Full"))
 181             batt_info->status = CS_FULL;
 182         else if (BEGINS_WITH(last, "POWER_SUPPLY_STATUS=Discharging"))
 183             batt_info->status = CS_DISCHARGING;
 184         else if (BEGINS_WITH(last, "POWER_SUPPLY_STATUS="))
 185             batt_info->status = CS_UNKNOWN;
 186         else if (BEGINS_WITH(last, "POWER_SUPPLY_CHARGE_FULL_DESIGN=") ||
 187                  BEGINS_WITH(last, "POWER_SUPPLY_ENERGY_FULL_DESIGN="))
 188             batt_info->full_design = atoi(walk + 1);
 189         else if (BEGINS_WITH(last, "POWER_SUPPLY_ENERGY_FULL=") ||
 190                  BEGINS_WITH(last, "POWER_SUPPLY_CHARGE_FULL="))
 191             batt_info->full_last = atoi(walk + 1);
 192     }
 193
 194     /* the difference between POWER_SUPPLY_ENERGY_NOW and
 195      * POWER_SUPPLY_CHARGE_NOW is the unit of measurement. The energy is
 196      * given in mWh, the charge in mAh. So calculate every value given in
 197      * ampere to watt */
 198     if (!watt_as_unit && voltage >= 0) {
 199         if (batt_info->present_rate > 0) {
 200             batt_info->present_rate = (((float)voltage / 1000.0) * ((float)batt_info->present_rate / 1000.0));
 201         }
 202         if (batt_info->remaining > 0) {
 203             batt_info->remaining = (((float)voltage / 1000.0) * ((float)batt_info->remaining / 1000.0));
 204         }
 205         if (batt_info->full_design > 0) {
 206             batt_info->full_design = (((float)voltage / 1000.0) * ((float)batt_info->full_design / 1000.0));
 207         }
 208         if (batt_info->full_last > 0) {
 209             batt_info->full_last = (((float)voltage / 1000.0) * ((float)batt_info->full_last / 1000.0));
 210         }
 211     }
 212 #elif defined(__DragonFly__)
 213     union acpi_battery_ioctl_arg battio;
 214     if (acpi_init()) {
 215         battio.unit = number;
 216         ioctl(acpifd, ACPIIO_BATT_GET_BIF, &battio);
 217         batt_info->full_design = battio.bif.dcap;
 218         batt_info->full_last = battio.bif.lfcap;
 219         battio.unit = number;
 220         ioctl(acpifd, ACPIIO_BATT_GET_BATTINFO, &battio);
 221         batt_info->percentage_remaining = battio.battinfo.cap;
 222         batt_info->present_rate = battio.battinfo.rate;
 223         batt_info->seconds_remaining = battio.battinfo.min * 60;
 224         switch (battio.battinfo.state) {
 225             case 0:
 226                 batt_info->status = CS_FULL;
 227                 break;
 228             case ACPI_BATT_STAT_CHARGING:
 229                 batt_info->status = CS_CHARGING;
 230                 break;
 231             case ACPI_BATT_STAT_DISCHARG:
 232                 batt_info->status = CS_DISCHARGING;
 233                 break;
 234             default:
 235                 batt_info->status = CS_UNKNOWN;
 236         }
 237         OUTPUT_FULL_TEXT(format_down);
 238     }
 239 #elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
 240     int state;
 241     int sysctl_rslt;
 242     size_t sysctl_size = sizeof(sysctl_rslt);
 243
 244     if (sysctlbyname(BATT_LIFE, &sysctl_rslt, &sysctl_size, NULL, 0) != 0) {
 245         OUTPUT_FULL_TEXT(format_down);
 246         return false;
 247     }
 248
 249     batt_info->percentage_remaining = sysctl_rslt;
 250     if (sysctlbyname(BATT_TIME, &sysctl_rslt, &sysctl_size, NULL, 0) != 0) {
 251         OUTPUT_FULL_TEXT(format_down);
 252         return false;
 253     }
 254
 255     batt_info->seconds_remaining = sysctl_rslt * 60;
 256     if (sysctlbyname(BATT_STATE, &sysctl_rslt, &sysctl_size, NULL, 0) != 0) {
 257         OUTPUT_FULL_TEXT(format_down);
 258         return false;
 259     }
 260
 261     state = sysctl_rslt;
 262     if (state == 0 && batt_info->percentage_remaining == 100)
 263         batt_info->status = CS_FULL;
 264     else if ((state & ACPI_BATT_STAT_CHARGING) && batt_info->percentage_remaining < 100)
 265         batt_info->status = CS_CHARGING;
 266     else
 267         batt_info->status = CS_DISCHARGING;
 268 #elif defined(__OpenBSD__)
 269     /*
 270          * We're using apm(4) here, which is the interface to acpi(4) on amd64/i386 and
 271          * the generic interface on macppc/sparc64/zaurus, instead of using sysctl(3) and
 272          * probing acpi(4) devices.
 273          */
 274     struct apm_power_info apm_info;
 275     int apm_fd;
 276
 277     apm_fd = open("/dev/apm", O_RDONLY);
 278     if (apm_fd < 0) {
 279         OUTPUT_FULL_TEXT("can't open /dev/apm");
 280         return false;
 281     }
 282     if (ioctl(apm_fd, APM_IOC_GETPOWER, &apm_info) < 0)
 283         OUTPUT_FULL_TEXT("can't read power info");
 284
 285     close(apm_fd);
 286
 287     /* Don't bother to go further if there's no battery present. */
 288     if ((apm_info.battery_state == APM_BATTERY_ABSENT) ||
 289         (apm_info.battery_state == APM_BATT_UNKNOWN)) {
 290         OUTPUT_FULL_TEXT(format_down);
 291         return false;
 292     }
 293
 294     switch (apm_info.ac_state) {
 295         case APM_AC_OFF:
 296             batt_info->status = CS_DISCHARGING;
 297             break;
 298         case APM_AC_ON:
 299             batt_info->status = CS_CHARGING;
 300             break;
 301         default:
 302             /* If we don't know what's going on, just assume we're discharging. */
 303             batt_info->status = CS_DISCHARGING;
 304             break;
 305     }
 306
 307     batt_info->percentage_remaining = apm_info.battery_life;
 308
 309     /* Can't give a meaningful value for remaining minutes if we're charging. */
 310     if (batt_info->status != CS_CHARGING) {
 311         batt_info->seconds_remaining = apm_info.minutes_left * 60;
 312     }
 313 #elif defined(__NetBSD__)
 314     /*
 315      * Using envsys(4) via sysmon(4).
 316      */
 317     int fd, rval;
 318     bool is_found = false;
 319     char sensor_desc[16];
 320
 321     prop_dictionary_t dict;
 322     prop_array_t array;
 323     prop_object_iterator_t iter;
 324     prop_object_iterator_t iter2;
 325     prop_object_t obj, obj2, obj3, obj4, obj5;
 326
 327     if (number >= 0)
 328         (void)snprintf(sensor_desc, sizeof(sensor_desc), "acpibat%d", number);
 329
 330     fd = open("/dev/sysmon", O_RDONLY);
 331     if (fd < 0) {
 332         OUTPUT_FULL_TEXT("can't open /dev/sysmon");
 333         return false;
 334     }
 335
 336     rval = prop_dictionary_recv_ioctl(fd, ENVSYS_GETDICTIONARY, &dict);
 337     if (rval == -1) {
 338         close(fd);
 339         return false;
 340     }
 341
 342     if (prop_dictionary_count(dict) == 0) {
 343         prop_object_release(dict);
 344         close(fd);
 345         return false;
 346     }
 347
 348     iter = prop_dictionary_iterator(dict);
 349     if (iter == NULL) {
 350         prop_object_release(dict);
 351         close(fd);
 352     }
 353
 354     /* iterate over the dictionary returned by the kernel */
 355     while ((obj = prop_object_iterator_next(iter)) != NULL) {
 356         /* skip this dict if it's not what we're looking for */
 357         if (number < 0) {
 358             /* we want all batteries */
 359             if (!BEGINS_WITH(prop_dictionary_keysym_cstring_nocopy(obj),
 360                              "acpibat"))
 361                 continue;
 362         } else {
 363             /* we want a specific battery */
 364             if (strcmp(sensor_desc,
 365                        prop_dictionary_keysym_cstring_nocopy(obj)) != 0)
 366                 continue;
 367         }
 368
 369         is_found = true;
 370
 371         array = prop_dictionary_get_keysym(dict, obj);
 372         if (prop_object_type(array) != PROP_TYPE_ARRAY) {
 373             prop_object_iterator_release(iter);
 374             prop_object_release(dict);
 375             close(fd);
 376             return false;
 377         }
 378
 379         iter2 = prop_array_iterator(array);
 380         if (!iter2) {
 381             prop_object_iterator_release(iter);
 382             prop_object_release(dict);
 383             close(fd);
 384             return false;
 385         }
 386
 387         struct battery_info batt_buf = {
 388             .full_design = 0,
 389             .full_last = 0,
 390             .remaining = 0,
 391             .present_rate = 0,
 392             .status = CS_UNKNOWN,
 393         };
 394         int voltage = -1;
 395         bool watt_as_unit = false;
 396
 397         /* iterate over array of dicts specific to target battery */
 398         while ((obj2 = prop_object_iterator_next(iter2)) != NULL) {
 399             obj3 = prop_dictionary_get(obj2, "description");
 400
 401             if (obj3 == NULL)
 402                 continue;
 403
 404             if (strcmp("charging", prop_string_cstring_nocopy(obj3)) == 0) {
 405                 obj3 = prop_dictionary_get(obj2, "cur-value");
 406
 407                 if (prop_number_integer_value(obj3))
 408                     batt_buf.status = CS_CHARGING;
 409                 else
 410                     batt_buf.status = CS_DISCHARGING;
 411             } else if (strcmp("charge", prop_string_cstring_nocopy(obj3)) == 0) {
 412                 obj3 = prop_dictionary_get(obj2, "cur-value");
 413                 obj4 = prop_dictionary_get(obj2, "max-value");
 414                 obj5 = prop_dictionary_get(obj2, "type");
 415
 416                 batt_buf.remaining = prop_number_integer_value(obj3);
 417                 batt_buf.full_design = prop_number_integer_value(obj4);
 418
 419                 if (strcmp("Ampere hour", prop_string_cstring_nocopy(obj5)) == 0)
 420                     watt_as_unit = false;
 421                 else
 422                     watt_as_unit = true;
 423             } else if (strcmp("discharge rate", prop_string_cstring_nocopy(obj3)) == 0) {
 424                 obj3 = prop_dictionary_get(obj2, "cur-value");
 425                 batt_buf.present_rate = prop_number_integer_value(obj3);
 426             } else if (strcmp("charge rate", prop_string_cstring_nocopy(obj3)) == 0) {
 427                 obj3 = prop_dictionary_get(obj2, "cur-value");
 428                 batt_info->present_rate = prop_number_integer_value(obj3);
 429             } else if (strcmp("last full cap", prop_string_cstring_nocopy(obj3)) == 0) {
 430                 obj3 = prop_dictionary_get(obj2, "cur-value");
 431                 batt_buf.full_last = prop_number_integer_value(obj3);
 432             } else if (strcmp("voltage", prop_string_cstring_nocopy(obj3)) == 0) {
 433                 obj3 = prop_dictionary_get(obj2, "cur-value");
 434                 voltage = prop_number_integer_value(obj3);
 435             }
 436         }
 437         prop_object_iterator_release(iter2);
 438
 439         if (!watt_as_unit && voltage != -1) {
 440             batt_buf.present_rate = (((float)voltage / 1000.0) * ((float)batt_buf.present_rate / 1000.0));
 441             batt_buf.remaining = (((float)voltage / 1000.0) * ((float)batt_buf.remaining / 1000.0));
 442             batt_buf.full_design = (((float)voltage / 1000.0) * ((float)batt_buf.full_design / 1000.0));
 443             batt_buf.full_last = (((float)voltage / 1000.0) * ((float)batt_buf.full_last / 1000.0));
 444         }
 445
 446         if (batt_buf.remaining == batt_buf.full_design)
 447             batt_buf.status = CS_FULL;
 448
 449         add_battery_info(batt_info, &batt_buf);
 450     }
 451
 452     prop_object_iterator_release(iter);
 453     prop_object_release(dict);
 454     close(fd);
 455
 456     if (!is_found) {
 457         OUTPUT_FULL_TEXT(format_down);
 458         return false;
 459     }
 460
 461     batt_info->present_rate = abs(batt_info->present_rate);
 462 #endif
 463
 464     return true;
 465 }
 466
 467 /*
 468  * Populate batt_info with aggregate information about all batteries.
 469  * Returns false on error, and an error message will have been written.
 470  */
 471 static bool slurp_all_batteries(struct battery_info *batt_info, yajl_gen json_gen, char *buffer, const char *path, const char *format_down) {
 472 #if defined(LINUX)
 473     char *outwalk = buffer;
 474     bool is_found = false;
 475
 476     char *placeholder;
 477     char *globpath = sstrdup(path);
 478     if ((placeholder = strstr(path, "%d")) != NULL) {
 479         char *globplaceholder = globpath + (placeholder - path);
 480         *globplaceholder = '*';
 481         strcpy(globplaceholder + 1, placeholder + 2);
 482     }
 483
 484     if (!strcmp(globpath, path)) {
 485         OUTPUT_FULL_TEXT("no '%d' in battery path");
 486         return false;
 487     }
 488
 489     glob_t globbuf;
 490     if (glob(globpath, 0, NULL, &globbuf) == 0) {
 491         for (size_t i = 0; i < globbuf.gl_pathc; i++) {
 492             /* Probe to see if there is such a battery. */
 493             struct battery_info batt_buf = {
 494                 .full_design = 0,
 495                 .full_last = 0,
 496                 .remaining = 0,
 497                 .present_rate = 0,
 498                 .status = CS_UNKNOWN,
 499             };
 500             if (!slurp_battery_info(&batt_buf, json_gen, buffer, i, globbuf.gl_pathv[i], format_down)) {
 501                 globfree(&globbuf);
 502                 free(globpath);
 503                 return false;
 504             }
 505
 506             is_found = true;
 507             add_battery_info(batt_info, &batt_buf);
 508         }
 509         globfree(&globbuf);
 510     }
 511     free(globpath);
 512
 513     if (!is_found) {
 514         OUTPUT_FULL_TEXT(format_down);
 515         return false;
 516     }
 517
 518     batt_info->present_rate = abs(batt_info->present_rate);
 519 #else
 520     /* FreeBSD and OpenBSD only report aggregates. NetBSD always
 521      * iterates through all batteries, so it's more efficient to
 522      * aggregate in slurp_battery_info. */
 523     return slurp_battery_info(batt_info, json_gen, buffer, -1, path, format_down);
 524 #endif
 525
 526     return true;
 527 }
 528
 529 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) {
 530     const char *walk;
 531     char *outwalk = buffer;
 532     struct battery_info batt_info = {
 533         .full_design = -1,
 534         .full_last = -1,
 535         .remaining = -1,
 536         .present_rate = -1,
 537         .seconds_remaining = -1,
 538         .percentage_remaining = -1,
 539         .status = CS_UNKNOWN,
 540     };
 541     bool colorful_output = false;
 542
 543 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__) || defined(__OpenBSD__)
 544     /* These OSes report battery stats in whole percent. */
 545     integer_battery_capacity = true;
 546 #endif
 547 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__) || defined(__OpenBSD__)
 548     /* These OSes report battery time in minutes. */
 549     hide_seconds = true;
 550 #endif
 551
 552     if (number < 0) {
 553         if (!slurp_all_batteries(&batt_info, json_gen, buffer, path, format_down))
 554             return;
 555     } else {
 556         if (!slurp_battery_info(&batt_info, json_gen, buffer, number, path, format_down))
 557             return;
 558     }
 559
 560     // *Choose* a measure of the 'full' battery. It is whichever is better of
 561     // the battery's (hardware-given) design capacity (batt_info.full_design)
 562     // and the battery's last known good charge (batt_info.full_last).
 563     // We prefer the design capacity, but use the last capacity if we don't have it,
 564     // or if we are asked to (last_full_capacity == true); but similarly we use
 565     // the design capacity if we don't have the last capacity.
 566     // If we don't have either then both full_design and full_last <= 0,
 567     // which implies full <= 0, which bails out on the following line.
 568     int full = batt_info.full_design;
 569     if (full <= 0 || (last_full_capacity && batt_info.full_last > 0)) {
 570         full = batt_info.full_last;
 571     }
 572     if (full <= 0 && batt_info.remaining < 0 && batt_info.percentage_remaining < 0) {
 573         /* We have no physical measurements and no estimates. Nothing
 574          * much we can report, then. */
 575         OUTPUT_FULL_TEXT(format_down);
 576         return;
 577     }
 578
 579     if (batt_info.percentage_remaining < 0) {
 580         batt_info.percentage_remaining = (((float)batt_info.remaining / (float)full) * 100);
 581         /* Some batteries report POWER_SUPPLY_CHARGE_NOW=<full_design> when fully
 582          * charged, even though that’s plainly wrong. For people who chose to see
 583          * the percentage calculated based on the last full capacity, we clamp the
 584          * value to 100%, as that makes more sense.
 585          * See http://bugs.debian.org/785398 */
 586         if (last_full_capacity && batt_info.percentage_remaining > 100) {
 587             batt_info.percentage_remaining = 100;
 588         }
 589     }
 590
 591     if (batt_info.seconds_remaining < 0 && batt_info.present_rate > 0 && batt_info.status != CS_FULL) {
 592         if (batt_info.status == CS_CHARGING)
 593             batt_info.seconds_remaining = 3600.0 * (full - batt_info.remaining) / batt_info.present_rate;
 594         else if (batt_info.status == CS_DISCHARGING)
 595             batt_info.seconds_remaining = 3600.0 * batt_info.remaining / batt_info.present_rate;
 596         else
 597             batt_info.seconds_remaining = 0;
 598     }
 599
 600     if (batt_info.status == CS_DISCHARGING && low_threshold > 0) {
 601         if (batt_info.percentage_remaining >= 0 && strcasecmp(threshold_type, "percentage") == 0 && batt_info.percentage_remaining < low_threshold) {
 602             START_COLOR("color_bad");
 603             colorful_output = true;
 604         } else if (batt_info.seconds_remaining >= 0 && strcasecmp(threshold_type, "time") == 0 && batt_info.seconds_remaining < 60 * low_threshold) {
 605             START_COLOR("color_bad");
 606             colorful_output = true;
 607         }
 608     }
 609
 610 #define EAT_SPACE_FROM_OUTPUT_IF_NO_OUTPUT()                   \
 611     do {                                                       \
 612         if (outwalk == prevoutwalk) {                          \
 613             if (outwalk > buffer && isspace((int)outwalk[-1])) \
 614                 outwalk--;                                     \
 615             else if (isspace((int)*(walk + 1)))                \
 616                 walk++;                                        \
 617         }                                                      \
 618     } while (0)
 619
 620     for (walk = format; *walk != '\0'; walk++) {
 621         char *prevoutwalk = outwalk;
 622
 623         if (*walk != '%') {
 624             *(outwalk++) = *walk;
 625
 626         } else if (BEGINS_WITH(walk + 1, "status")) {
 627             const char *statusstr;
 628             switch (batt_info.status) {
 629                 case CS_CHARGING:
 630                     statusstr = status_chr;
 631                     break;
 632                 case CS_DISCHARGING:
 633                     statusstr = status_bat;
 634                     break;
 635                 case CS_FULL:
 636                     statusstr = status_full;
 637                     break;
 638                 default:
 639                     statusstr = status_unk;
 640             }
 641
 642             outwalk += sprintf(outwalk, "%s", statusstr);
 643             walk += strlen("status");
 644
 645         } else if (BEGINS_WITH(walk + 1, "percentage")) {
 646             if (integer_battery_capacity) {
 647                 outwalk += sprintf(outwalk, "%.00f%s", batt_info.percentage_remaining, pct_mark);
 648             } else {
 649                 outwalk += sprintf(outwalk, "%.02f%s", batt_info.percentage_remaining, pct_mark);
 650             }
 651             walk += strlen("percentage");
 652
 653         } else if (BEGINS_WITH(walk + 1, "remaining")) {
 654             if (batt_info.seconds_remaining >= 0) {
 655                 int seconds, hours, minutes;
 656
 657                 hours = batt_info.seconds_remaining / 3600;
 658                 seconds = batt_info.seconds_remaining - (hours * 3600);
 659                 minutes = seconds / 60;
 660                 seconds -= (minutes * 60);
 661
 662                 if (hide_seconds)
 663                     outwalk += sprintf(outwalk, "%02d:%02d",
 664                                        max(hours, 0), max(minutes, 0));
 665                 else
 666                     outwalk += sprintf(outwalk, "%02d:%02d:%02d",
 667                                        max(hours, 0), max(minutes, 0), max(seconds, 0));
 668             }
 669             walk += strlen("remaining");
 670             EAT_SPACE_FROM_OUTPUT_IF_NO_OUTPUT();
 671
 672         } else if (BEGINS_WITH(walk + 1, "emptytime")) {
 673             if (batt_info.seconds_remaining >= 0) {
 674                 time_t empty_time = time(NULL) + batt_info.seconds_remaining;
 675                 set_timezone(NULL); /* Use local time. */
 676                 struct tm *empty_tm = localtime(&empty_time);
 677
 678                 if (hide_seconds)
 679                     outwalk += sprintf(outwalk, "%02d:%02d",
 680                                        max(empty_tm->tm_hour, 0), max(empty_tm->tm_min, 0));
 681                 else
 682                     outwalk += sprintf(outwalk, "%02d:%02d:%02d",
 683                                        max(empty_tm->tm_hour, 0), max(empty_tm->tm_min, 0), max(empty_tm->tm_sec, 0));
 684             }
 685             walk += strlen("emptytime");
 686             EAT_SPACE_FROM_OUTPUT_IF_NO_OUTPUT();
 687
 688         } else if (BEGINS_WITH(walk + 1, "consumption")) {
 689             if (batt_info.present_rate >= 0)
 690                 outwalk += sprintf(outwalk, "%1.2fW", batt_info.present_rate / 1e6);
 691
 692             walk += strlen("consumption");
 693             EAT_SPACE_FROM_OUTPUT_IF_NO_OUTPUT();
 694
 695         } else {
 696             *(outwalk++) = '%';
 697         }
 698     }
 699
 700     if (colorful_output)
 701         END_COLOR;
 702
 703     OUTPUT_FULL_TEXT(buffer);
 704 }