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/*******************************************************************************
* librepfunc - a collection of common functions, classes and tools.
* See the README file for copyright information and how to reach the author.
******************************************************************************/
#include <repfunc.h>
template<class T>
std::basic_string<T> FrontFillT(std::basic_string<T> s, size_t n) {
ssize_t missing = n - s.size();
if (missing > 0)
return std::basic_string<T>(missing, (T)' ') + s;
return s;
}
template<class T>
std::basic_string<T> BackFillT(std::basic_string<T> s, size_t n) {
ssize_t chars = s.size();
/* For UTF-8 encoded chars, the number of bytes is larger than the
* number of chars. Take it into account.
*/
for(auto c:s) {
if (((unsigned) c & 0xE0) == 0xC0) {
/* two byte utf8 */
chars += -1;
}
else if (((unsigned) c & 0xF0) == 0xE0) {
/* three byte utf8 */
chars += -2;
}
else if (((unsigned) c & 0xF8) == 0xF0) {
/* four byte utf8 */
chars += -3;
}
}
ssize_t missing = n - chars;
if (missing > 0)
return s + std::basic_string<T>(missing, (T)' ');
return s;
}
std::string FrontFill(std::string s, size_t n) {
return FrontFillT(s, n);
}
std::string BackFill(std::string s, size_t n) {
return BackFillT(s, n);
}
std::wstring FrontFillW(std::wstring s, size_t n) {
return FrontFillT(s, n);
}
std::wstring BackFillW(std::wstring s, size_t n) {
return BackFillT(s, n);
}
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