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Code clean up for reading battery info
This commit is contained in:
aninsen
BenBE
parent
3f9f52fd29
commit
3e70de64b3
238
linux/Platform.c
238
linux/Platform.c
@ -611,133 +611,85 @@ bool Platform_getNetworkIO(NetworkIOData* data) {
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// Linux battery reading by Ian P. Hands (iphands@gmail.com, ihands@redhat.com).
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#define MAX_BATTERIES 64
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#define PROC_BATTERY_DIR PROCDIR "/acpi/battery"
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#define PROC_POWERSUPPLY_DIR PROCDIR "/acpi/ac_adapter"
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#define PROC_POWERSUPPLY_ACSTATE_FILE PROC_POWERSUPPLY_DIR "/AC/state"
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#define SYS_POWERSUPPLY_DIR "/sys/class/power_supply"
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// ----------------------------------------
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// READ FROM /proc
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// ----------------------------------------
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static unsigned long int parseBatInfo(const char* fileName, const unsigned short int lineNum, const unsigned short int wordNum) {
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const char batteryPath[] = PROC_BATTERY_DIR;
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DIR* batteryDir = opendir(batteryPath);
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static double Platform_Battery_getProcBatInfo(void) {
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DIR* batteryDir = opendir(PROC_BATTERY_DIR);
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if (!batteryDir)
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return 0;
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return NAN;
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char* batteries[MAX_BATTERIES];
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unsigned int nBatteries = 0;
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memset(batteries, 0, MAX_BATTERIES * sizeof(char*));
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while (nBatteries < MAX_BATTERIES) {
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const struct dirent* dirEntry = readdir(batteryDir);
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if (!dirEntry)
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break;
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uint64_t totalFull = 0;
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uint64_t totalRemain = 0;
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struct dirent* dirEntry = NULL;
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while ((dirEntry = readdir(batteryDir))) {
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const char* entryName = dirEntry->d_name;
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if (!String_startsWith(entryName, "BAT"))
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continue;
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batteries[nBatteries] = xStrdup(entryName);
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nBatteries++;
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}
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closedir(batteryDir);
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char filePath[256];
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char bufInfo[1024] = {0};
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xSnprintf(filePath, sizeof(filePath), "%s/%s/info", PROC_BATTERY_DIR, entryName);
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ssize_t r = xReadfile(filePath, bufInfo, sizeof(bufInfo));
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if (r < 0)
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continue;
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unsigned long int total = 0;
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for (unsigned int i = 0; i < nBatteries; i++) {
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char infoPath[30];
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xSnprintf(infoPath, sizeof infoPath, "%s%s/%s", batteryPath, batteries[i], fileName);
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char bufState[1024] = {0};
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xSnprintf(filePath, sizeof(filePath), "%s/%s/state", PROC_BATTERY_DIR, entryName);
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r = xReadfile(filePath, bufState, sizeof(bufState));
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if (r < 0)
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continue;
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FILE* file = fopen(infoPath, "r");
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if (!file)
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break;
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const char* line;
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char* line = NULL;
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for (unsigned short int j = 0; j < lineNum; j++) {
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free(line);
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line = String_readLine(file);
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if (!line)
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//Getting total charge for all batteries
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char* buf = bufInfo;
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while ((line = strsep(&buf, "\n")) != NULL) {
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char field[100] = {0};
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int val = 0;
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if (2 != sscanf(line, "%99[^:]:%d", field, &val))
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continue;
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if (String_eq(field, "last full capacity")) {
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totalFull += val;
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break;
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}
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}
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fclose(file);
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//Getting remaining charge for all batteries
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buf = bufState;
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while ((line = strsep(&buf, "\n")) != NULL) {
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char field[100] = {0};
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int val = 0;
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if (2 != sscanf(line, "%99[^:]:%d", field, &val))
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continue;
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if (!line)
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break;
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char* foundNumStr = String_getToken(line, wordNum);
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const unsigned long int foundNum = atoi(foundNumStr);
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free(foundNumStr);
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free(line);
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total += foundNum;
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if (String_eq(field, "remaining capacity")) {
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totalRemain += val;
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break;
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}
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}
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}
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for (unsigned int i = 0; i < nBatteries; i++)
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free(batteries[i]);
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closedir(batteryDir);
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return total;
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return totalFull > 0 ? ((double) totalRemain * 100.0) / (double) totalFull : NAN;
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}
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static ACPresence procAcpiCheck(void) {
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ACPresence isOn = AC_ERROR;
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const char* power_supplyPath = PROC_POWERSUPPLY_DIR;
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DIR* dir = opendir(power_supplyPath);
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if (!dir)
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char buffer[1024] = {0};
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ssize_t r = xReadfile(PROC_POWERSUPPLY_ACSTATE_FILE, buffer, sizeof(buffer));
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if (r < 1)
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return AC_ERROR;
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for (;;) {
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const struct dirent* dirEntry = readdir(dir);
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if (!dirEntry)
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break;
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const char* entryName = dirEntry->d_name;
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if (entryName[0] != 'A')
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continue;
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char statePath[256];
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xSnprintf(statePath, sizeof(statePath), "%s/%s/state", power_supplyPath, entryName);
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FILE* file = fopen(statePath, "r");
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if (!file) {
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isOn = AC_ERROR;
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continue;
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}
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char* line = String_readLine(file);
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fclose(file);
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if (!line)
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continue;
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char* isOnline = String_getToken(line, 2);
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free(line);
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if (String_eq(isOnline, "on-line"))
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isOn = AC_PRESENT;
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else
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isOn = AC_ABSENT;
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free(isOnline);
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if (isOn == AC_PRESENT)
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break;
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}
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closedir(dir);
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return isOn;
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}
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static double Platform_Battery_getProcBatInfo(void) {
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const unsigned long int totalFull = parseBatInfo("info", 3, 4);
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if (totalFull == 0)
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return NAN;
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const unsigned long int totalRemain = parseBatInfo("state", 5, 3);
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if (totalRemain == 0)
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return NAN;
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return totalRemain * 100.0 / (double) totalFull;
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return String_eq(buffer, "on-line") ? AC_PRESENT : AC_ABSENT;
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}
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static void Platform_Battery_getProcData(double* percent, ACPresence* isOnAC) {
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@ -750,7 +702,6 @@ static void Platform_Battery_getProcData(double* percent, ACPresence* isOnAC) {
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// ----------------------------------------
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static void Platform_Battery_getSysData(double* percent, ACPresence* isOnAC) {
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*percent = NAN;
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*isOnAC = AC_ERROR;
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@ -758,68 +709,52 @@ static void Platform_Battery_getSysData(double* percent, ACPresence* isOnAC) {
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if (!dir)
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return;
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unsigned long int totalFull = 0;
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unsigned long int totalRemain = 0;
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for (;;) {
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const struct dirent* dirEntry = readdir(dir);
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if (!dirEntry)
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break;
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uint64_t totalFull = 0;
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uint64_t totalRemain = 0;
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struct dirent* dirEntry = NULL;
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while ((dirEntry = readdir(dir))) {
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const char* entryName = dirEntry->d_name;
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char filePath[256];
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xSnprintf(filePath, sizeof filePath, SYS_POWERSUPPLY_DIR "/%s/type", entryName);
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char type[8];
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ssize_t r = xReadfile(filePath, type, sizeof(type));
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if (r < 3)
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continue;
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if (type[0] == 'B' && type[1] == 'a' && type[2] == 't') {
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if (String_startsWith(entryName, "BAT")) {
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char buffer[1024] = {0};
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char filePath[256];
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xSnprintf(filePath, sizeof filePath, SYS_POWERSUPPLY_DIR "/%s/uevent", entryName);
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char buffer[1024];
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r = xReadfile(filePath, buffer, sizeof(buffer));
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if (r < 0) {
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closedir(dir);
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return;
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}
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ssize_t r = xReadfile(filePath, buffer, sizeof(buffer));
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if (r < 0)
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continue;
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char* buf = buffer;
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const char* line;
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bool full = false;
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bool now = false;
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int fullSize = 0;
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double fullCharge = 0;
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double capacityLevel = NAN;
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const char* line;
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#define match(str,prefix) \
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(String_startsWith(str,prefix) ? (str) + strlen(prefix) : NULL)
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char* buf = buffer;
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while ((line = strsep(&buf, "\n")) != NULL) {
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const char* ps = match(line, "POWER_SUPPLY_");
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if (!ps)
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char field[100] = {0};
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int val = 0;
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if (2 != sscanf(line, "POWER_SUPPLY_%99[^=]=%d", field, &val))
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continue;
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const char* capacity = match(ps, "CAPACITY=");
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if (capacity)
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capacityLevel = atoi(capacity) / 100.0;
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const char* energy = match(ps, "ENERGY_");
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if (!energy)
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energy = match(ps, "CHARGE_");
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if (!energy)
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if (String_eq(field, "CAPACITY")) {
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capacityLevel = val / 100.0;
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continue;
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const char* value = (!full) ? match(energy, "FULL=") : NULL;
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if (value) {
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fullSize = atoi(value);
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totalFull += fullSize;
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}
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if (String_eq(field, "ENERGY_FULL") || String_eq(field, "CHARGE_FULL")) {
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fullCharge = val;
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totalFull += fullCharge;
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full = true;
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if (now)
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break;
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continue;
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}
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value = (!now) ? match(energy, "NOW=") : NULL;
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if (value) {
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totalRemain += atoi(value);
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if (String_eq(field, "ENERGY_NOW") || String_eq(field, "CHARGE_NOW")) {
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totalRemain += val;
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now = true;
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if (full)
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break;
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@ -827,23 +762,21 @@ static void Platform_Battery_getSysData(double* percent, ACPresence* isOnAC) {
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}
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}
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#undef match
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if (!now && full && !isnan(capacityLevel))
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totalRemain += (capacityLevel * fullSize);
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totalRemain += capacityLevel * fullCharge;
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} else if (entryName[0] == 'A') {
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} else if (String_eq(entryName, "AC")) {
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char buffer[2] = {0};
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if (*isOnAC != AC_ERROR)
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continue;
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xSnprintf(filePath, sizeof filePath, SYS_POWERSUPPLY_DIR "/%s/online", entryName);
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char filePath[256];
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xSnprintf(filePath, sizeof(filePath), SYS_POWERSUPPLY_DIR "/%s/online", entryName);
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char buffer[2];
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r = xReadfile(filePath, buffer, sizeof(buffer));
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ssize_t r = xReadfile(filePath, buffer, sizeof(buffer));
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if (r < 1) {
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closedir(dir);
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return;
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*isOnAC = AC_ERROR;
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continue;
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}
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if (buffer[0] == '0')
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@ -852,6 +785,7 @@ static void Platform_Battery_getSysData(double* percent, ACPresence* isOnAC) {
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*isOnAC = AC_PRESENT;
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}
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}
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closedir(dir);
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*percent = totalFull > 0 ? ((double) totalRemain * 100.0) / (double) totalFull : NAN;
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