libmrbesen/src/Util.cpp

44 lines
1006 B
C++

#include "util.h"
#include <algorithm>
unsigned int mrbesen::Util::count(const std::string& str, char c) {
size_t pos = 0;
long count = -1;
do {
pos = str.find(c, pos);
++count;
} while((pos++) != std::string::npos);
return (unsigned int) count;
}
bool icompare_pred(unsigned char a, unsigned char b) {
return std::tolower(a) == std::tolower(b);
}
bool mrbesen::Util::equalsIgnoreCase(const std::string& a, const std::string& b, size_t max) {
size_t al = a.size(), bl = b.size();
if((al == 0 && bl == 0) || max == 0) return true;
if(al != bl && (al < max || bl < max)) {
return false;
}
if(max == std::string::npos) {
return std::equal(b.begin(), b.end(), a.begin(), icompare_pred);
} else {
if(max > al) max = al;
if(max > bl) max = bl;
return std::equal(b.begin(), b.begin()+max, a.begin(), icompare_pred);
}
}
void mrbesen::Util::toLower(const std::string& in, std::string& out) {
out = "";
out.reserve(in.size());
for(char c : in) {
out += std::tolower(c);
}
}