112 lines
2.4 KiB
C++
112 lines
2.4 KiB
C++
#include "util.h"
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#include <algorithm>
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unsigned int mrbesen::Util::count(const std::string& str, char c) {
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size_t pos = 0;
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long count = -1;
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do {
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pos = str.find(c, pos);
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++count;
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} while((pos++) != std::string::npos);
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return (unsigned int) count;
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}
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bool icompare_pred(unsigned char a, unsigned char b) {
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return std::tolower(a) == std::tolower(b);
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}
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bool mrbesen::Util::equalsIgnoreCase(const std::string& a, const std::string& b, size_t max) {
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size_t al = a.size(), bl = b.size();
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if((al == 0 && bl == 0) || max == 0) return true;
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if(al != bl && (al < max || bl < max)) {
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return false;
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}
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if(max == std::string::npos) {
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return std::equal(b.begin(), b.end(), a.begin(), icompare_pred);
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} else {
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if(max > al) max = al;
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if(max > bl) max = bl;
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return std::equal(b.begin(), b.begin()+max, a.begin(), icompare_pred);
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}
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}
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void mrbesen::Util::toLower(const std::string& in, std::string& out) {
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if(&in == &out) {
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//wenn beide strings identisch sind, inplace funktion verwenden;
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toLower(out);
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return;
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}
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out = "";
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out.reserve(in.size());
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for(char c : in) {
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out += std::tolower(c);
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}
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}
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void mrbesen::Util::toLower(std::string& in) {
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for(size_t p = 0; p < in.size(); p++) {
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in[p] = std::tolower(in[p]);
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}
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}
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bool mrbesen::Util::endsWith(const std::string& str, const std::string& ending) {
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size_t es = ending.size();
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size_t ss = str.size();
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if(es > ss) return false;
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if(es == 0) return true;
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return str.rfind(ending) == (ss - es);
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}
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bool mrbesen::Util::startsWith(const std::string& str, const std::string& start) {
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if(start.size() > str.size()) return false;
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if(start.size() == 0) return true;
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return str.find(start) == 0;
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}
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bool mrbesen::Util::removeEnd(std::string& str, const std::string& ending) {
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if(ending.empty()) return false;
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if(endsWith(str, ending)) {
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str.resize(str.size() - ending.length());
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return true;
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}
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return false;
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}
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bool mrbesen::Util::removeStart(std::string& str, const std::string& start) {
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if(start.empty()) return false;
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if(startsWith(str, start)) {
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str = str.substr(start.length());
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return true;
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}
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return false;
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}
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bool mrbesen::Util::insertEnd(std::string& str, const std::string& ending) {
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if(ending.empty()) return false;
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if(endsWith(str, ending)) return false;
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str.append(ending);
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return true;
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}
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bool mrbesen::Util::insertStart(std::string& str, const std::string& start) {
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if(start.empty()) return false;
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if(startsWith(str, start)) return false;
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str = start + str;
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return true;
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}
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