diff options
Diffstat (limited to 'src/print_battery_info.c')
| -rw-r--r-- | src/print_battery_info.c | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/src/print_battery_info.c b/src/print_battery_info.c new file mode 100644 index 0000000..eb1f6bb --- /dev/null +++ b/src/print_battery_info.c @@ -0,0 +1,149 @@ +// vim:ts=8:expandtab +#include <string.h> +#include <stdlib.h> +#include <stdio.h> + +#include "i3status.h" + +#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) +#include <sys/types.h> +#include <sys/sysctl.h> +#endif + +/* + * Get battery information from /sys. Note that it uses the design capacity to + * calculate the percentage, not the last full capacity, so you can see how + * worn off your battery is. + * + */ +void print_battery_info(int number, const char *format) { + char buf[1024]; + char *walk, *last; + int full_design = -1, + remaining = -1, + present_rate = -1; + charging_status_t status = CS_DISCHARGING; + +#if defined(LINUX) + static char batpath[512]; + sprintf(batpath, "/sys/class/power_supply/BAT%d/uevent", number); + if (!slurp(batpath, buf, sizeof(buf))) { + printf("No battery"); + return; + } + + for (walk = buf, last = buf; (walk-buf) < 1024; walk++) { + if (*walk == '\n') { + last = walk+1; + continue; + } + + if (*walk != '=') + continue; + + if (BEGINS_WITH(last, "POWER_SUPPLY_ENERGY_NOW") || + BEGINS_WITH(last, "POWER_SUPPLY_CHARGE_NOW")) + remaining = atoi(walk+1); + else if (BEGINS_WITH(last, "POWER_SUPPLY_CURRENT_NOW")) + present_rate = atoi(walk+1); + else if (BEGINS_WITH(last, "POWER_SUPPLY_STATUS=Charging")) + status = CS_CHARGING; + else if (BEGINS_WITH(last, "POWER_SUPPLY_STATUS=Full")) + status = CS_FULL; + else { + /* The only thing left is the full capacity */ +#if 0 + if (bat->use_last_full) { + if (!BEGINS_WITH(last, "POWER_SUPPLY_ENERGY_FULL") && + !BEGINS_WITH(last, "POWER_SUPPLY_CHARGE_FULL")) + continue; + } else { +#endif + if (!BEGINS_WITH(last, "POWER_SUPPLY_CHARGE_FULL_DESIGN") && + !BEGINS_WITH(last, "POWER_SUPPLY_ENERGY_FULL_DESIGN")) + continue; + //} + + full_design = atoi(walk+1); + } + } + + if ((full_design == 1) || (remaining == -1)) + return; + + if (present_rate > 0) { + float remaining_time; + int seconds, hours, minutes; + if (status == CS_CHARGING) + remaining_time = ((float)full_design - (float)remaining) / (float)present_rate; + else if (status == CS_DISCHARGING) + remaining_time = ((float)remaining / (float)present_rate); + else remaining_time = 0; + + seconds = (int)(remaining_time * 3600.0); + hours = seconds / 3600; + seconds -= (hours * 3600); + minutes = seconds / 60; + seconds -= (minutes * 60); + + (void)printf("%s %.02f%% %02d:%02d:%02d", + (status == CS_CHARGING ? "CHR" : + (status == CS_DISCHARGING ? "BAT" : "FULL")), + (((float)remaining / (float)full_design) * 100), + max(hours, 0), max(minutes, 0), max(seconds, 0)); + } else { + (void)printf("%s %.02f%%", + (status == CS_CHARGING ? "CHR" : + (status == CS_DISCHARGING ? "BAT" : "FULL")), + (((float)remaining / (float)full_design) * 100)); + } +#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) + int state; + int sysctl_rslt; + size_t sysctl_size = sizeof(sysctl_rslt); + + if (sysctlbyname(BATT_LIFE, &sysctl_rslt, &sysctl_size, NULL, 0) != 0) { + printf("No battery"); + return; + } + + present_rate = sysctl_rslt; + if (sysctlbyname(BATT_TIME, &sysctl_rslt, &sysctl_size, NULL, 0) != 0) { + printf("No battery"); + return; + } + + remaining = sysctl_rslt; + if (sysctlbyname(BATT_STATE, &sysctl_rslt, &sysctl_size, NULL,0) != 0) { + printf("No battery"); + return; + } + + state = sysctl_rslt; + if (state == 0 && present_rate == 100) + status = CS_FULL; + else if (state == 0 && present_rate < 100) + status = CS_CHARGING; + else + status = CS_DISCHARGING; + + full_design = sysctl_rslt; + + if (state == 1) { + int hours, minutes; + minutes = remaining; + hours = minutes / 60; + minutes -= (hours * 60); + (void)printf("%s %02d%% %02dh%02d", + (status == CS_CHARGING ? "CHR" : + (status == CS_DISCHARGING ? "BAT" : "FULL")), + present_rate, + max(hours, 0), max(minutes, 0)); + } else { + (void)printf("%s %02d%%", + (status == CS_CHARGING ? "CHR" : + (status == CS_DISCHARGING ? "BAT" : "FULL")), + present_rate); + } +#endif +} |