40b0c8d076
Continue to use uint32 as glyph ID to maintain Glyph PBF, even though we're only using 16 bits of that uint32. Use std::codecvt instead of boost::unicode_iterator for UTF8->UTF16 conversions.
78 lines
1.8 KiB
C++
78 lines
1.8 KiB
C++
#include <mbgl/platform/platform.hpp>
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#define NU_WITH_TOUPPER
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#define NU_WITH_TOLOWER
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#define NU_WITH_UTF8_WRITER
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#include <libnu/libnu.h>
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#include <cstring>
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#include <sstream>
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namespace mbgl { namespace platform {
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std::string uppercase(const std::string& str)
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{
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std::stringstream output;
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char const *itr = str.c_str(), *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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{
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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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{
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do
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{
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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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}
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while (code_point != 0);
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}
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else
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{
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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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{
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std::stringstream output;
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char const *itr = str.c_str(), *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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{
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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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{
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do
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{
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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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}
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while (code_point != 0);
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}
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else
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{
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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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