6 #include <yajl/yajl_gen.h>
7 #include <yajl/yajl_version.h>
11 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
12 #include <sys/types.h>
13 #include <sys/sysctl.h>
16 #if defined(__OpenBSD__)
17 #include <sys/types.h>
18 #include <sys/ioctl.h>
19 #include <sys/fcntl.h>
20 #include <machine/apmvar.h>
23 #define BATT_STATUS_NAME(status) \
24 (status == CS_CHARGING ? "CHR" : \
25 (status == CS_DISCHARGING ? "BAT" : "FULL"))
27 * Get battery information from /sys. Note that it uses the design capacity to
28 * calculate the percentage, not the last full capacity, so you can see how
29 * worn off your battery is.
32 void print_battery_info(yajl_gen json_gen, char *buffer, int number, const char *path, const char *format, int threshold, bool last_full_capacity) {
37 char percentagebuf[16];
38 char remainingbuf[256];
39 char emptytimebuf[256];
40 char consumptionbuf[256];
41 const char *walk, *last;
42 char *outwalk = buffer;
48 charging_status_t status = CS_DISCHARGING;
50 memset(statusbuf, '\0', sizeof(statusbuf));
51 memset(percentagebuf, '\0', sizeof(percentagebuf));
52 memset(remainingbuf, '\0', sizeof(remainingbuf));
53 memset(emptytimebuf, '\0', sizeof(emptytimebuf));
54 memset(consumptionbuf, '\0', sizeof(consumptionbuf));
59 static char batpath[512];
60 sprintf(batpath, path, number);
61 if (!slurp(batpath, buf, sizeof(buf))) {
62 OUTPUT_FULL_TEXT("No battery");
66 for (walk = buf, last = buf; (walk-buf) < 1024; walk++) {
75 if (BEGINS_WITH(last, "POWER_SUPPLY_ENERGY_NOW") ||
76 BEGINS_WITH(last, "POWER_SUPPLY_CHARGE_NOW"))
77 remaining = atoi(walk+1);
78 else if (BEGINS_WITH(last, "POWER_SUPPLY_CURRENT_NOW"))
79 current = atoi(walk+1);
80 else if (BEGINS_WITH(last, "POWER_SUPPLY_VOLTAGE_NOW"))
81 voltage = atoi(walk+1);
82 else if (BEGINS_WITH(last, "POWER_SUPPLY_POWER_NOW"))
83 present_rate = atoi(walk+1);
84 else if (BEGINS_WITH(last, "POWER_SUPPLY_STATUS=Charging"))
86 else if (BEGINS_WITH(last, "POWER_SUPPLY_STATUS=Full"))
89 /* The only thing left is the full capacity */
90 if (last_full_capacity) {
91 if (!BEGINS_WITH(last, "POWER_SUPPLY_ENERGY_FULL") &&
92 !BEGINS_WITH(last, "POWER_SUPPLY_CHARGE_FULL"))
95 if (!BEGINS_WITH(last, "POWER_SUPPLY_CHARGE_FULL_DESIGN") &&
96 !BEGINS_WITH(last, "POWER_SUPPLY_ENERGY_FULL_DESIGN"))
100 full_design = atoi(walk+1);
104 /* on some systems POWER_SUPPLY_POWER_NOW does not exist, so we have to calculate it */
105 if (present_rate == -1)
106 present_rate = ((float)voltage / 1000.0) * ((float)current / 1000.0);
108 if ((full_design == -1) || (remaining == -1)) {
109 OUTPUT_FULL_TEXT("No battery");
113 (void)snprintf(statusbuf, sizeof(statusbuf), "%s", BATT_STATUS_NAME(status));
115 (void)snprintf(percentagebuf, sizeof(percentagebuf), "%.02f%%",
116 (((float)remaining / (float)full_design) * 100));
118 if (present_rate > 0) {
119 float remaining_time;
120 int seconds, hours, minutes, seconds_remaining;
121 if (status == CS_CHARGING)
122 remaining_time = ((float)full_design - (float)remaining) / (float)present_rate;
123 else if (status == CS_DISCHARGING)
124 remaining_time = ((float)remaining / (float)present_rate);
125 else remaining_time = 0;
127 seconds_remaining = (int)(remaining_time * 3600.0);
129 hours = seconds_remaining / 3600;
130 seconds = seconds_remaining - (hours * 3600);
131 minutes = seconds / 60;
132 seconds -= (minutes * 60);
134 if (status == CS_DISCHARGING && threshold > 0 && seconds_remaining < 60 * threshold)
135 START_COLOR("color_bad");
137 (void)snprintf(remainingbuf, sizeof(remainingbuf), "%02d:%02d:%02d",
138 max(hours, 0), max(minutes, 0), max(seconds, 0));
140 empty_time = time(NULL);
141 empty_time += seconds_remaining;
142 empty_tm = localtime(&empty_time);
144 (void)snprintf(emptytimebuf, sizeof(emptytimebuf), "%02d:%02d:%02d",
145 max(empty_tm->tm_hour, 0), max(empty_tm->tm_min, 0), max(empty_tm->tm_sec, 0));
147 (void)snprintf(consumptionbuf, sizeof(consumptionbuf), "%1.2fW",
148 ((float)present_rate / 1000.0 / 1000.0));
152 #elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
155 size_t sysctl_size = sizeof(sysctl_rslt);
157 if (sysctlbyname(BATT_LIFE, &sysctl_rslt, &sysctl_size, NULL, 0) != 0) {
158 OUTPUT_FULL_TEXT("No battery");
162 present_rate = sysctl_rslt;
163 if (sysctlbyname(BATT_TIME, &sysctl_rslt, &sysctl_size, NULL, 0) != 0) {
164 OUTPUT_FULL_TEXT("No battery");
168 remaining = sysctl_rslt;
169 if (sysctlbyname(BATT_STATE, &sysctl_rslt, &sysctl_size, NULL,0) != 0) {
170 OUTPUT_FULL_TEXT("No battery");
175 if (state == 0 && present_rate == 100)
177 else if (state == 0 && present_rate < 100)
178 status = CS_CHARGING;
180 status = CS_DISCHARGING;
182 full_design = sysctl_rslt;
184 (void)snprintf(statusbuf, sizeof(statusbuf), "%s", BATT_STATUS_NAME(status));
186 (void)snprintf(percentagebuf, sizeof(percentagebuf), "%02d%%",
192 hours = minutes / 60;
193 minutes -= (hours * 60);
194 (void)snprintf(remainingbuf, sizeof(remainingbuf), "%02dh%02d",
195 max(hours, 0), max(minutes, 0));
197 #elif defined(__OpenBSD__)
199 * We're using apm(4) here, which is the interface to acpi(4) on amd64/i386 and
200 * the generic interface on macppc/sparc64/zaurus, instead of using sysctl(3) and
201 * probing acpi(4) devices.
203 struct apm_power_info apm_info;
204 int apm_fd, ac_status, charging;
206 apm_fd = open("/dev/apm", O_RDONLY);
208 OUTPUT_FULL_TEXT("can't open /dev/apm");
211 if (ioctl(apm_fd, APM_IOC_GETPOWER, &apm_info) < 0)
212 OUTPUT_FULL_TEXT("can't read power info");
216 /* Don't bother to go further if there's no battery present. */
217 if ((apm_info.battery_state == APM_BATTERY_ABSENT) ||
218 (apm_info.battery_state == APM_BATT_UNKNOWN)) {
219 OUTPUT_FULL_TEXT("No battery");
223 switch(apm_info.ac_state) {
225 ac_status = CS_DISCHARGING;
228 ac_status = CS_CHARGING;
231 /* If we don't know what's going on, just assume we're discharging. */
232 ac_status = CS_DISCHARGING;
236 (void)snprintf(statusbuf, sizeof(statusbuf), "%s", BATT_STATUS_NAME(status));
237 (void)snprintf(percentagebuf, sizeof(percentagebuf), "%02d%%", apm_info.battery_life);
239 /* Can't give a meaningful value for remaining minutes if we're charging. */
240 if (ac_status == CS_CHARGING)
243 (void)snprintf(remainingbuf, sizeof(remainingbuf), (charging ? "%s" : "%d"),
244 (charging ? "(CHR)" : apm_info.minutes_left));
247 for (walk = format; *walk != '\0'; walk++) {
249 *(outwalk++) = *walk;
253 if (strncmp(walk+1, "status", strlen("status")) == 0) {
254 outwalk += sprintf(outwalk, "%s", statusbuf);
255 walk += strlen("status");
256 } else if (strncmp(walk+1, "percentage", strlen("percentage")) == 0) {
257 outwalk += sprintf(outwalk, "%s", percentagebuf);
258 walk += strlen("percentage");
259 } else if (strncmp(walk+1, "remaining", strlen("remaining")) == 0) {
260 outwalk += sprintf(outwalk, "%s", remainingbuf);
261 walk += strlen("remaining");
262 } else if (strncmp(walk+1, "emptytime", strlen("emptytime")) == 0) {
263 outwalk += sprintf(outwalk, "%s", emptytimebuf);
264 walk += strlen("emptytime");
265 } else if (strncmp(walk+1, "consumption", strlen("consumption")) == 0) {
266 outwalk += sprintf(outwalk, "%s", consumptionbuf);
267 walk += strlen("consumptionbuf");
271 OUTPUT_FULL_TEXT(buffer);