63 lines
1.7 KiB
C++
63 lines
1.7 KiB
C++
#include <mbgl/util/platform.hpp>
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#include <libnu/casemap.h>
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#include <cstring>
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#include <sstream>
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namespace mbgl {
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namespace platform {
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std::string uppercase(const std::string &str) {
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std::stringstream output;
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char const *itr = str.c_str();
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char const *nitr;
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char const *end = itr + str.length();
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char lo[5] = {0};
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for (; itr < end; itr = nitr) {
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uint32_t code_point = 0;
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char const *buf = nullptr;
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nitr = _nu_toupper(itr, end, nu_utf8_read, &code_point, &buf, nullptr);
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if (buf != nullptr) {
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do {
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buf = NU_CASEMAP_DECODING_FUNCTION(buf, &code_point);
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if (code_point == 0) break;
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output.write(lo, nu_utf8_write(code_point, lo) - lo);
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} while (code_point != 0);
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} else {
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output.write(itr, nitr - itr);
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}
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}
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return output.str();
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}
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std::string lowercase(const std::string &str) {
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std::stringstream output;
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char const *itr = str.c_str();
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char const *nitr;
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char const *end = itr + str.length();
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char lo[5] = {0};
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for (; itr < end; itr = nitr) {
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uint32_t code_point = 0;
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char const *buf = nullptr;
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nitr = _nu_tolower(itr, end, nu_utf8_read, &code_point, &buf, nullptr);
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if (buf != nullptr) {
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do {
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buf = NU_CASEMAP_DECODING_FUNCTION(buf, &code_point);
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if (code_point == 0) break;
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output.write(lo, nu_utf8_write(code_point, lo) - lo);
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} while (code_point != 0);
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} else {
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output.write(itr, nitr - itr);
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}
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}
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return output.str();
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}
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} // namespace platform
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} // namespace mbgl
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