diff options
Diffstat (limited to 'src/UniConversion.cxx')
| -rw-r--r-- | src/UniConversion.cxx | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/src/UniConversion.cxx b/src/UniConversion.cxx index 6cd6a8ba9..8cbb3cdd2 100644 --- a/src/UniConversion.cxx +++ b/src/UniConversion.cxx @@ -162,6 +162,17 @@ size_t UTF16FromUTF8(const char *s, size_t len, wchar_t *tbuf, size_t tlen) { return ui; } +size_t UTF32Length(const char *s, size_t len) noexcept { + size_t ulen = 0; + for (size_t i = 0; i < len;) { + const unsigned char ch = s[i]; + const unsigned int byteCount = UTF8BytesOfLead[ch]; + i += byteCount; + ulen++; + } + return ulen; +} + size_t UTF32FromUTF8(const char *s, size_t len, unsigned int *tbuf, size_t tlen) { size_t ui = 0; for (size_t i = 0; i < len;) { @@ -215,6 +226,20 @@ size_t UTF32FromUTF8(const char *s, size_t len, unsigned int *tbuf, size_t tlen) return ui; } +std::wstring WStringFromUTF8(const char *s, size_t len) { +#ifdef _WIN32 + const size_t len16 = UTF16Length(s, len); + std::wstring ws(len16, 0); + UTF16FromUTF8(s, len, &ws[0], len16); + return ws; +#else + const size_t len32 = UTF32Length(s, len); + std::wstring ws(len32, 0); + UTF32FromUTF8(s, len, reinterpret_cast<unsigned int *>(&ws[0]), len32); + return ws; +#endif +} + unsigned int UTF16FromUTF32Character(unsigned int val, wchar_t *tbuf) noexcept { if (val < SUPPLEMENTAL_PLANE_FIRST) { tbuf[0] = static_cast<wchar_t>(val); |