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#include "stringHelpers.h"
char* newString(unsigned length) {
return new char[length + 1];
}
// Тази функция е локална: не можем да я използваме в друг файл!
unsigned stringLength(const char* string) {
if (string == nullptr)
return 0;
unsigned length = 0;
while (*string != '\0') {
++length;
++string;
}
return length;
}
char* newString(const char* string) {
if (string == nullptr)
return nullptr;
unsigned length = stringLength(string);
char* str = newString(length);
// Правим <= length, за да пренесем и терминиращата нула
for (unsigned i = 0; i <= length; ++i) {
str[i] = string[i];
}
return str;
}
char* concatStrings(const char* first, const char* second, const char* separator) {
unsigned length = stringLength(first) + stringLength(separator) + stringLength(second);
char* str = newString(length);
unsigned i = 0;
if (first != nullptr) {
while (*first != '\0' && i < length) {
str[i] = *first;
++first;
++i;
}
}
if (separator != nullptr) {
while (*separator != '\0' && i < length) {
str[i] = *separator;
++separator;
++i;
}
}
if (second != nullptr) {
while (*second != '\0' && i < length) {
str[i] = *second;
++second;
++i;
}
}
return str;
}
void deleteString(char*& string) {
delete[] string;
string = nullptr;
}
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