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#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include "common.h"
#include "tools.h"
#ifndef POWER_BASEDIR
#define POWER_BASEDIR "/sys/class/power_supply/"
#endif
void status_battery(GlobalData *g, char *batname)
{
StatusItem s;
char text[32] = { 0 };
char batpath[256];
int batpathlen;
char stline[16];
ssize_t stlen;
int chargeNow = 0;
int chargeFull = -1;
int chargePercent = -1;
int currentNow = 1;
int voltageNow = 0;
float battTime = -1;
statusitem_init(&s);
s.text = text;
/* Prepare path */
batpathlen = sizeof(POWER_BASEDIR) - 1 + strlen(batname);
if (batpathlen + 1 + sizeof("/energy_full") >= sizeof(batpath)) {
statusError("status_battery",
"batpath buffer too small",
batname);
return;
}
strcpy(batpath, POWER_BASEDIR);
strcat(batpath, batname);
/* Is the battery present? */
if (access(batpath, F_OK)) {
//printf(" ^fg(grey)[%s] ", batname);
return;
}
/* Get info */
strcpy(&batpath[batpathlen], "/charge_now");
stlen = fileRead(stline, sizeof(stline), batpath);
if (stlen > 0) {
chargeNow = atoi(stline);
}
strcpy(&batpath[batpathlen], "/charge_full");
stlen = fileRead(stline, sizeof(stline), batpath);
if (stlen > 0) {
chargeFull = atoi(stline);
}
strcpy(&batpath[batpathlen], "/current_now");
stlen = fileRead(stline, sizeof(stline), batpath);
if (stlen > 0) {
currentNow = atoi(stline);
}
strcpy(&batpath[batpathlen], "/voltage_now");
stlen = fileRead(stline, sizeof(stline), batpath);
if (stlen > 0) {
voltageNow = atoi(stline);
}
/* Prettyprint */
if (chargeFull > 0) {
chargePercent = chargeNow / (chargeFull / 100);
}
if (chargePercent <= 40) {
if (chargePercent <= 25) {
if (chargePercent <= 10) {
s.color = "#FF0000"; // red
} else {
// 11-25%
s.color = "#FFA500"; // orange
}
} else {
// 26-40%
s.color = "#FFFF00"; // yellow
}
} else {
if (chargePercent > 70) {
s.color = "#FFFFFF"; // white
} else {
// 41-70%
s.color = "#22FF22"; // green
}
}
battTime = (float)chargeNow / (float)currentNow;
if (currentNow == 0) {
// fully charged and not in use
snprintf(text, sizeof(text), "%s: %d%% _ _",
batname, chargePercent);
} else {
snprintf(text, sizeof(text), "%s: %d%% %.1fh %.1fW",
batname, chargePercent, battTime, (float)voltageNow / 1000000.0 * (float)currentNow / 1000000.0);
}
line_append_item(g, &s);
}
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