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#include "legato.h"
#include "util.h"
le_result_t readFromFile (const char *path, void *value,
int (*scanCallback) (FILE *f, void *val)) {
FILE *f = fopen(path, "r");
if (f == NULL) {
LE_WARN("Couldn't open '%s' - %m", path);
return LE_IO_ERROR;
}
int numScanned = scanCallback(f, value);
if (numScanned != 1) return LE_FORMAT_ERROR;
fclose(f);
return LE_OK;
}
int scanIntCallback (FILE *f, void *value) {
int *val = value;
return fscanf(f, "%d", val);
}
int scanDoubleCallback (FILE *f, void *value) {
double *val = value;
return fscanf(f, "%lf", val);
}
le_result_t ioutil_readIntFromFile (const char *path, int *value) {
return readFromFile(path, value, scanIntCallback);
}
le_result_t ioutil_readDoubleFromFile (const char *path, double *value) {
return readFromFile(path, value, scanDoubleCallback);
}
le_result_t ioutil_writeToFile (const char *path, void *value, size_t size, size_t count) {
LE_INFO("Attempting to write to %s", path);
FILE *f = fopen(path, "w");
if (f == NULL) {
LE_WARN("Failed to open %s for writing", path);
return LE_IO_ERROR;
}
ssize_t nWritten = fwrite(value, size, count, f);
LE_INFO("Wrote %d bytes", nWritten);
fclose(f);
return LE_OK;
}
le_result_t util_flattenRes (le_result_t *res, int nRes) {
for (int i = 0; i < nRes; i++) {
le_result_t *resPtr = res + i;
if (*resPtr != LE_OK) return *resPtr;
}
return LE_OK;
}
int util_getUnixDatetime () {
struct timeval tv;
gettimeofday(&tv, NULL);
return tv.tv_sec;
}
/**
* Get the last modified datetime
* of the file at path
*/
time_t util_getMTime (char *path) {
struct stat st;
if (stat(path, &st) != 0) return -1;
else return st.st_mtime;
}
uint64_t GetCurrentTimestamp(void) {
struct timeval tv;
gettimeofday(&tv, NULL);
uint64_t utcMilliSec = (uint64_t)(tv.tv_sec) * 1000 + (uint64_t)(tv.tv_usec) / 1000;
return utcMilliSec;
}
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