battery.c - slstatus - status monitor | |
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battery.c (5232B) | |
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1 /* See LICENSE file for copyright and license details. */ | |
2 #include <stdio.h> | |
3 #include <string.h> | |
4 | |
5 #include "../slstatus.h" | |
6 #include "../util.h" | |
7 | |
8 #if defined(__linux__) | |
9 /* | |
10 * https://www.kernel.org/doc/html/latest/power/power_supply_class.html | |
11 */ | |
12 #include <limits.h> | |
13 #include <stdint.h> | |
14 #include <unistd.h> | |
15 | |
16 #define POWER_SUPPLY_CAPACITY "/sys/class/power_supply/%s/capaci… | |
17 #define POWER_SUPPLY_STATUS "/sys/class/power_supply/%s/status" | |
18 #define POWER_SUPPLY_CHARGE "/sys/class/power_supply/%s/charge… | |
19 #define POWER_SUPPLY_ENERGY "/sys/class/power_supply/%s/energy… | |
20 #define POWER_SUPPLY_CURRENT "/sys/class/power_supply/%s/curren… | |
21 #define POWER_SUPPLY_POWER "/sys/class/power_supply/%s/power_… | |
22 | |
23 static const char * | |
24 pick(const char *bat, const char *f1, const char *f2, char *path, | |
25 size_t length) | |
26 { | |
27 if (esnprintf(path, length, f1, bat) > 0 && | |
28 access(path, R_OK) == 0) | |
29 return f1; | |
30 | |
31 if (esnprintf(path, length, f2, bat) > 0 && | |
32 access(path, R_OK) == 0) | |
33 return f2; | |
34 | |
35 return NULL; | |
36 } | |
37 | |
38 const char * | |
39 battery_perc(const char *bat) | |
40 { | |
41 int cap_perc; | |
42 char path[PATH_MAX]; | |
43 | |
44 if (esnprintf(path, sizeof(path), POWER_SUPPLY_CAPACITY,… | |
45 return NULL; | |
46 if (pscanf(path, "%d", &cap_perc) != 1) | |
47 return NULL; | |
48 | |
49 return bprintf("%d", cap_perc); | |
50 } | |
51 | |
52 const char * | |
53 battery_state(const char *bat) | |
54 { | |
55 static struct { | |
56 char *state; | |
57 char *symbol; | |
58 } map[] = { | |
59 { "Charging", "+" }, | |
60 { "Discharging", "-" }, | |
61 { "Full", "o" }, | |
62 { "Not charging", "o" }, | |
63 }; | |
64 size_t i; | |
65 char path[PATH_MAX], state[12]; | |
66 | |
67 if (esnprintf(path, sizeof(path), POWER_SUPPLY_STATUS, b… | |
68 return NULL; | |
69 if (pscanf(path, "%12[a-zA-Z ]", state) != 1) | |
70 return NULL; | |
71 | |
72 for (i = 0; i < LEN(map); i++) | |
73 if (!strcmp(map[i].state, state)) | |
74 break; | |
75 | |
76 return (i == LEN(map)) ? "?" : map[i].symbol; | |
77 } | |
78 | |
79 const char * | |
80 battery_remaining(const char *bat) | |
81 { | |
82 uintmax_t charge_now, current_now, m, h; | |
83 double timeleft; | |
84 char path[PATH_MAX], state[12]; | |
85 | |
86 if (esnprintf(path, sizeof(path), POWER_SUPPLY_STATUS, b… | |
87 return NULL; | |
88 if (pscanf(path, "%12[a-zA-Z ]", state) != 1) | |
89 return NULL; | |
90 | |
91 if (!pick(bat, POWER_SUPPLY_CHARGE, POWER_SUPPLY_ENERGY,… | |
92 sizeof(path)) || | |
93 pscanf(path, "%ju", &charge_now) < 0) | |
94 return NULL; | |
95 | |
96 if (!strcmp(state, "Discharging")) { | |
97 if (!pick(bat, POWER_SUPPLY_CURRENT, POWER_SUPPL… | |
98 sizeof(path)) || | |
99 pscanf(path, "%ju", ¤t_now) < 0) | |
100 return NULL; | |
101 | |
102 if (current_now == 0) | |
103 return NULL; | |
104 | |
105 timeleft = (double)charge_now / (double)current_… | |
106 h = timeleft; | |
107 m = (timeleft - (double)h) * 60; | |
108 | |
109 return bprintf("%juh %jum", h, m); | |
110 } | |
111 | |
112 return ""; | |
113 } | |
114 #elif defined(__OpenBSD__) | |
115 #include <fcntl.h> | |
116 #include <machine/apmvar.h> | |
117 #include <sys/ioctl.h> | |
118 #include <unistd.h> | |
119 | |
120 static int | |
121 load_apm_power_info(struct apm_power_info *apm_info) | |
122 { | |
123 int fd; | |
124 | |
125 fd = open("/dev/apm", O_RDONLY); | |
126 if (fd < 0) { | |
127 warn("open '/dev/apm':"); | |
128 return 0; | |
129 } | |
130 | |
131 memset(apm_info, 0, sizeof(struct apm_power_info)); | |
132 if (ioctl(fd, APM_IOC_GETPOWER, apm_info) < 0) { | |
133 warn("ioctl 'APM_IOC_GETPOWER':"); | |
134 close(fd); | |
135 return 0; | |
136 } | |
137 return close(fd), 1; | |
138 } | |
139 | |
140 const char * | |
141 battery_perc(const char *unused) | |
142 { | |
143 struct apm_power_info apm_info; | |
144 | |
145 if (load_apm_power_info(&apm_info)) | |
146 return bprintf("%d", apm_info.battery_life); | |
147 | |
148 return NULL; | |
149 } | |
150 | |
151 const char * | |
152 battery_state(const char *unused) | |
153 { | |
154 struct { | |
155 unsigned int state; | |
156 char *symbol; | |
157 } map[] = { | |
158 { APM_AC_ON, "+" }, | |
159 { APM_AC_OFF, "-" }, | |
160 }; | |
161 struct apm_power_info apm_info; | |
162 size_t i; | |
163 | |
164 if (load_apm_power_info(&apm_info)) { | |
165 for (i = 0; i < LEN(map); i++) | |
166 if (map[i].state == apm_info.ac_state) | |
167 break; | |
168 | |
169 return (i == LEN(map)) ? "?" : map[i].symbol; | |
170 } | |
171 | |
172 return NULL; | |
173 } | |
174 | |
175 const char * | |
176 battery_remaining(const char *unused) | |
177 { | |
178 struct apm_power_info apm_info; | |
179 unsigned int h, m; | |
180 | |
181 if (load_apm_power_info(&apm_info)) { | |
182 if (apm_info.ac_state != APM_AC_ON) { | |
183 h = apm_info.minutes_left / 60; | |
184 m = apm_info.minutes_left % 60; | |
185 return bprintf("%uh %02um", h, m); | |
186 } else { | |
187 return ""; | |
188 } | |
189 } | |
190 | |
191 return NULL; | |
192 } | |
193 #elif defined(__FreeBSD__) | |
194 #include <sys/sysctl.h> | |
195 | |
196 #define BATTERY_LIFE "hw.acpi.battery.life" | |
197 #define BATTERY_STATE "hw.acpi.battery.state" | |
198 #define BATTERY_TIME "hw.acpi.battery.time" | |
199 | |
200 const char * | |
201 battery_perc(const char *unused) | |
202 { | |
203 int cap_perc; | |
204 size_t len; | |
205 | |
206 len = sizeof(cap_perc); | |
207 if (sysctlbyname(BATTERY_LIFE, &cap_perc, &len, NULL, 0)… | |
208 return NULL; | |
209 | |
210 return bprintf("%d", cap_perc); | |
211 } | |
212 | |
213 const char * | |
214 battery_state(const char *unused) | |
215 { | |
216 int state; | |
217 size_t len; | |
218 | |
219 len = sizeof(state); | |
220 if (sysctlbyname(BATTERY_STATE, &state, &len, NULL, 0) <… | |
221 return NULL; | |
222 | |
223 switch (state) { | |
224 case 0: /* FALLTHROUGH */ | |
225 case 2: | |
226 return "+"; | |
227 case 1: | |
228 return "-"; | |
229 default: | |
230 return "?"; | |
231 } | |
232 } | |
233 | |
234 const char * | |
235 battery_remaining(const char *unused) | |
236 { | |
237 int rem; | |
238 size_t len; | |
239 | |
240 len = sizeof(rem); | |
241 if (sysctlbyname(BATTERY_TIME, &rem, &len, NULL, 0) < 0 … | |
242 || rem < 0) | |
243 return NULL; | |
244 | |
245 return bprintf("%uh %02um", rem / 60, rem % 60); | |
246 } | |
247 #endif |