mstch/src/utils.cpp
2015-05-04 11:27:51 +02:00

40 lines
1.1 KiB
C++

#include "utils.hpp"
mstch::citer mstch::first_not_ws(mstch::citer begin, mstch::citer end) {
for (auto it = begin; it != end; ++it)
if (*it != ' ') return it;
return end;
}
mstch::citer mstch::first_not_ws(mstch::criter begin, mstch::criter end) {
for (auto rit = begin; rit != end; ++rit)
if (*rit != ' ') return --(rit.base());
return --(end.base());
}
mstch::criter mstch::reverse(mstch::citer it) {
return std::reverse_iterator<mstch::citer>(it);
}
std::string mstch::html_escape(const std::string& str) {
std::string out;
citer start = str.begin();
auto add_escape = [&out, &start](const std::string& escaped, citer& it) {
out += std::string{start, it} + escaped;
start = it + 1;
};
for (auto it = str.begin(); it != str.end(); ++it)
switch (*it) {
case '&': add_escape("&amp;", it); break;
case '\'': add_escape("&#39;", it); break;
case '"': add_escape("&quot;", it); break;
case '<': add_escape("&lt;", it); break;
case '>': add_escape("&gt;", it); break;
case '/': add_escape("&#x2F;", it); break;
default: break;
}
return out + std::string{start, str.end()};
}