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 const char *walk, *last;
41 char *outwalk = buffer;
45 charging_status_t status = CS_DISCHARGING;
47 memset(statusbuf, '\0', sizeof(statusbuf));
48 memset(percentagebuf, '\0', sizeof(percentagebuf));
49 memset(remainingbuf, '\0', sizeof(remainingbuf));
50 memset(emptytimebuf, '\0', sizeof(emptytimebuf));
55 static char batpath[512];
56 sprintf(batpath, path, number);
57 if (!slurp(batpath, buf, sizeof(buf))) {
58 OUTPUT_FULL_TEXT("No battery");
62 for (walk = buf, last = buf; (walk-buf) < 1024; walk++) {
71 if (BEGINS_WITH(last, "POWER_SUPPLY_ENERGY_NOW") ||
72 BEGINS_WITH(last, "POWER_SUPPLY_CHARGE_NOW"))
73 remaining = atoi(walk+1);
74 else if (BEGINS_WITH(last, "POWER_SUPPLY_CURRENT_NOW"))
75 present_rate = atoi(walk+1);
76 else if (BEGINS_WITH(last, "POWER_SUPPLY_POWER_NOW"))
77 present_rate = atoi(walk+1);
78 else if (BEGINS_WITH(last, "POWER_SUPPLY_STATUS=Charging"))
80 else if (BEGINS_WITH(last, "POWER_SUPPLY_STATUS=Full"))
83 /* The only thing left is the full capacity */
84 if (last_full_capacity) {
85 if (!BEGINS_WITH(last, "POWER_SUPPLY_ENERGY_FULL") &&
86 !BEGINS_WITH(last, "POWER_SUPPLY_CHARGE_FULL"))
89 if (!BEGINS_WITH(last, "POWER_SUPPLY_CHARGE_FULL_DESIGN") &&
90 !BEGINS_WITH(last, "POWER_SUPPLY_ENERGY_FULL_DESIGN"))
94 full_design = atoi(walk+1);
98 if ((full_design == -1) || (remaining == -1)) {
99 OUTPUT_FULL_TEXT("No battery");
103 (void)snprintf(statusbuf, sizeof(statusbuf), "%s", BATT_STATUS_NAME(status));
105 (void)snprintf(percentagebuf, sizeof(percentagebuf), "%.02f%%",
106 (((float)remaining / (float)full_design) * 100));
108 if (present_rate > 0) {
109 float remaining_time;
110 int seconds, hours, minutes, seconds_remaining;
111 if (status == CS_CHARGING)
112 remaining_time = ((float)full_design - (float)remaining) / (float)present_rate;
113 else if (status == CS_DISCHARGING)
114 remaining_time = ((float)remaining / (float)present_rate);
115 else remaining_time = 0;
117 seconds_remaining = (int)(remaining_time * 3600.0);
119 hours = seconds_remaining / 3600;
120 seconds = seconds_remaining - (hours * 3600);
121 minutes = seconds / 60;
122 seconds -= (minutes * 60);
124 if (threshold > 0 && seconds_remaining < 60 * threshold)
125 START_COLOR("color_bad");
127 (void)snprintf(remainingbuf, sizeof(remainingbuf), "%02d:%02d:%02d",
128 max(hours, 0), max(minutes, 0), max(seconds, 0));
130 empty_time = time(NULL);
131 empty_time += seconds_remaining;
132 empty_tm = localtime(&empty_time);
134 (void)snprintf(emptytimebuf, sizeof(emptytimebuf), "%02d:%02d:%02d",
135 max(empty_tm->tm_hour, 0), max(empty_tm->tm_min, 0), max(empty_tm->tm_sec, 0));
139 #elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
142 size_t sysctl_size = sizeof(sysctl_rslt);
144 if (sysctlbyname(BATT_LIFE, &sysctl_rslt, &sysctl_size, NULL, 0) != 0) {
145 OUTPUT_FULL_TEXT("No battery");
149 present_rate = sysctl_rslt;
150 if (sysctlbyname(BATT_TIME, &sysctl_rslt, &sysctl_size, NULL, 0) != 0) {
151 OUTPUT_FULL_TEXT("No battery");
155 remaining = sysctl_rslt;
156 if (sysctlbyname(BATT_STATE, &sysctl_rslt, &sysctl_size, NULL,0) != 0) {
157 OUTPUT_FULL_TEXT("No battery");
162 if (state == 0 && present_rate == 100)
164 else if (state == 0 && present_rate < 100)
165 status = CS_CHARGING;
167 status = CS_DISCHARGING;
169 full_design = sysctl_rslt;
171 (void)snprintf(statusbuf, sizeof(statusbuf), "%s", BATT_STATUS_NAME(status));
173 (void)snprintf(percentagebuf, sizeof(percentagebuf), "%02d%%",
179 hours = minutes / 60;
180 minutes -= (hours * 60);
181 (void)snprintf(remainingbuf, sizeof(remainingbuf), "%02dh%02d",
182 max(hours, 0), max(minutes, 0));
184 #elif defined(__OpenBSD__)
186 * We're using apm(4) here, which is the interface to acpi(4) on amd64/i386 and
187 * the generic interface on macppc/sparc64/zaurus, instead of using sysctl(3) and
188 * probing acpi(4) devices.
190 struct apm_power_info apm_info;
191 int apm_fd, ac_status, charging;
193 apm_fd = open("/dev/apm", O_RDONLY);
195 OUTPUT_FULL_TEXT("can't open /dev/apm");
198 if (ioctl(apm_fd, APM_IOC_GETPOWER, &apm_info) < 0)
199 OUTPUT_FULL_TEXT("can't read power info");
203 /* Don't bother to go further if there's no battery present. */
204 if ((apm_info.battery_state == APM_BATTERY_ABSENT) ||
205 (apm_info.battery_state == APM_BATT_UNKNOWN)) {
206 OUTPUT_FULL_TEXT("No battery");
210 switch(apm_info.ac_state) {
212 ac_status = CS_DISCHARGING;
215 ac_status = CS_CHARGING;
218 /* If we don't know what's going on, just assume we're discharging. */
219 ac_status = CS_DISCHARGING;
223 (void)snprintf(statusbuf, sizeof(statusbuf), "%s", BATT_STATUS_NAME(status));
224 (void)snprintf(percentagebuf, sizeof(percentagebuf), "%02d%%", apm_info.battery_life);
226 /* Can't give a meaningful value for remaining minutes if we're charging. */
227 if (ac_status == CS_CHARGING)
230 (void)snprintf(remainingbuf, sizeof(remainingbuf), (charging ? "%s" : "%d"),
231 (charging ? "(CHR)" : apm_info.minutes_left));
234 for (walk = format; *walk != '\0'; walk++) {
236 *(outwalk++) = *walk;
240 if (strncmp(walk+1, "status", strlen("status")) == 0) {
241 outwalk += sprintf(outwalk, "%s", statusbuf);
242 walk += strlen("status");
243 } else if (strncmp(walk+1, "percentage", strlen("percentage")) == 0) {
244 outwalk += sprintf(outwalk, "%s", percentagebuf);
245 walk += strlen("percentage");
246 } else if (strncmp(walk+1, "remaining", strlen("remaining")) == 0) {
247 outwalk += sprintf(outwalk, "%s", remainingbuf);
248 walk += strlen("remaining");
249 } else if (strncmp(walk+1, "emptytime", strlen("emptytime")) == 0) {
250 outwalk += sprintf(outwalk, "%s", emptytimebuf);
251 walk += strlen("emptytime");
255 OUTPUT_FULL_TEXT(buffer);