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util.cpp
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59 lines (46 loc) · 763 Bytes
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/*
* util.cpp
*
* Created on: Dec 17, 2017
* Author: frank
*/
#include "util.hpp"
namespace httpsserver {
int parseInt(std::string s) {
int i = 0; // value
int m = 1; // multiplier
// Check sign
size_t x = 0;
if (s[0]=='-') {
x = 1;
} else if (s[0]=='+') {
x = 1;
}
// Convert by base 10
for(; x < s.size(); x++) {
char c = s[x];
if (c >= '0' && c<='9') {
i = i*10 + (c-'0');
} else {
break;
}
}
// Combine both.
return m*i;
}
std::string intToString(int i) {
if (i==0) {
return "0";
}
// We need this much digits
int digits = ceil(log10(i));
char c[digits+1];
c[digits] = '\0';
for(int x = digits-1; x >= 0; x--) {
char v = (i%10);
c[x] = '0' + v;
i = (i-v)/10;
}
return std::string(c);
}
}