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string pad/rpad/lpad

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VaclavT
2021-02-28 12:53:06 +01:00
parent 08b5053829
commit 46b29fc229
7 changed files with 49 additions and 28 deletions
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18
ml_string.cpp
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@@ -2,7 +2,6 @@
#include "ml_string.h"
// Replace a substring with a replacement string in a source string
void replace_substring(std::string &src, const std::string &substr, const std::string &replacement) {
size_t i = 0;
@@ -19,7 +18,7 @@ bool regexp_search(const std::string &where, const std::string &regex_str) {
std::regex regex(regex_str);
std::smatch match;
if(std::regex_search(where, match, regex)) {
if (std::regex_search(where, match, regex)) {
// std::cout << "matches for '" << where << "'\n";
// std::cout << "Prefix: '" << match.prefix() << "'\n";
// for (size_t i = 0; i < match.size(); ++i)
@@ -30,3 +29,18 @@ bool regexp_search(const std::string &where, const std::string &regex_str) {
}
return false;
}
std::string string_padd(const std::string &str, int pad_len, char fill_char, bool from_right) {
int str_len = str.length();
if (str_len == pad_len)
return str;
else if (str_len > pad_len) {
return (from_right ? str.substr(0, pad_len) : str.substr(str_len - pad_len, std::string::npos));
}
if (from_right)
return str + std::string(pad_len - str.size(), fill_char);
else
return std::string(pad_len - str.size(), fill_char) + str;
}