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/*
htop
(C) 2004-2006 Hisham H. Muhammad
Released under the GNU GPL, see the COPYING file
in the source distribution for its full text.
This "Meter" written by Ian P. Hands (iphands@gmail.com).
*/
#include "BatteryMeter.h"
#include "Meter.h"
#include "ProcessList.h"
#include "CRT.h"
#include "String.h"
#include "debug.h"
int BatteryMeter_attributes[] = {
BATTERY
};
static unsigned long int parseBatInfo(const char * fileName, const unsigned short int lineNum, const unsigned short int wordNum) {
const DIR *batteryDir;
const struct dirent *pDirEnt;
const char batteryPath[] = PROCDIR "/acpi/battery/";
batteryDir = opendir(batteryPath);
if (batteryDir == NULL) {
return 0;
}
char * string;
typedef struct listLbl { char* content; struct listLbl* next; } list;
list *myList = NULL;
list *newEntry;
/*
Some of this is based off of code found in kismet (they claim it came from gkrellm).
Written for multi battery use...
*/
for (pDirEnt= readdir((DIR*)batteryDir); pDirEnt; pDirEnt = readdir((DIR*)batteryDir)) {
string = (char*)pDirEnt->d_name;
if(!strcmp(string, ".") || !strcmp(string, ".."))
continue;
newEntry = calloc(1, sizeof(list));
newEntry->next = myList;
newEntry->content = string;
myList = newEntry;
}
unsigned long int total = 0;
for (newEntry = myList; newEntry; newEntry = newEntry->next) {
const char infoPath[30];
const FILE * file;
char line[50];
sprintf((char*)infoPath, "%s%s/%s", batteryPath, newEntry->content, fileName);
if ((file = fopen(infoPath, "r")) == NULL) {
return 0;
}
for (unsigned short int i = 0; i < lineNum; i++){
fgets(line, sizeof line, (FILE*)file);
}
fclose((FILE*)file);
const char * foundNumTmp = String_getToken(line, wordNum);
const unsigned long int foundNum = atoi(foundNumTmp);
free((char*)foundNumTmp);
total += foundNum;
}
free(myList);
free(newEntry);
closedir((DIR*)batteryDir);
return total;
}
static void BatteryMeter_setValues(Meter* this, char* buffer, int len) {
FILE* file = fopen(PROCDIR "/acpi/ac_adapter/AC/state", "r");
if (!file)
file = fopen(PROCDIR "/acpi/ac_adapter/ADP1/state", "r");
if (!file) {
snprintf(buffer, len, "n/a");
return;
}
char line [100];
fgets(line, sizeof line, file);
line[sizeof(line) - 1] = '\0';
fclose(file);
const unsigned long int totalFull = parseBatInfo("info", 3, 4);
const unsigned long int totalRemain = parseBatInfo("state", 5, 3);
const double percent = totalFull > 0 ? ((double)totalRemain * 100) / (double)totalFull : 0;
if (totalFull == 0) {
snprintf(buffer, len, "n/a");
return;
}
this->values[0] = percent;
const char* isOnline = String_getToken(line, 2);
char *onAcText, *onBatteryText;
if (this->mode == TEXT_METERMODE) {
onAcText = "%.1f%% (Running on A/C)";
onBatteryText = "%.1f%% (Running on battery)";
} else {
onAcText = "%.1f%%(A/C)";
onBatteryText = "%.1f%%(bat)";
}
if (strcmp(String_getToken(line, 2),"on-line") == 0) {
snprintf(buffer, len, onAcText, percent);
} else {
snprintf(buffer, len, onBatteryText, percent);
}
free((char*)isOnline);
return;
}
MeterType BatteryMeter = {
.setValues = BatteryMeter_setValues,
.display = NULL,
.mode = TEXT_METERMODE,
.items = 1,
.total = 100.0,
.attributes = BatteryMeter_attributes,
.name = "Battery",
.uiName = "Battery",
.caption = "Battery: "
};
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