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utils.cpp
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utils.cpp
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#include <time.h>
#include <stdio.h>
#include <string>
#include <cstdarg>
#include "utils.h"
const std::string NOT_SET="__NOT_SET";
double getCurrentTime() {
double ret;
struct timespec spec;
clock_gettime(CLOCK_REALTIME, &spec);
ret = spec.tv_sec + ( spec.tv_nsec / 1.0e9 );
return ret;
}
void printHex(const char *s, int len) {
const char *pos=s;
for(int i=0; i < len; i++) {
// if(*pos < 31 || *pos > 127) {
printf("\\x%02x",*pos);
/*
} else {
printf("%c",*pos);
}
*/
pos++;
}
}
#ifdef NO_STD_STOD
double utils::stod(const std::string &in) {
if(in == NOT_SET) {
throw std::runtime_error("NOT SET");
}
size_t end=0;
double ret=std::stod(in, &end);
if(end != in.length()) {
throw std::runtime_error("error converting number ["+in+"]");
}
return ret;
}
#endif
bool utils::stobool(const std::string &in) {
if(in=="false") return false;
if(in=="true") return true;
throw new std::runtime_error("error: invalid in ["+in+"]");
}
std::string utils::format(const char* fmt, ...){
int size = 512;
char* buffer = 0;
buffer = new char[size];
va_list vl;
va_start(vl, fmt);
int nsize = vsnprintf(buffer, size, fmt, vl);
if(size<=nsize){ //fail delete buffer and try again
delete[] buffer;
buffer = 0;
buffer = new char[nsize+1]; //+1 for /0
nsize = vsnprintf(buffer, size, fmt, vl);
}
std::string ret(buffer);
va_end(vl);
delete[] buffer;
return ret;
}
bool utils::startsWith(const std::string &str, const char *with) {
return str.find(with) == 0;
}