X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Fshared%2Futf8.h;h=e745649f06f5b06fcbe7b0869a798f068820d403;hp=3d5a4c3a9c0c2e81db9bcd973cddf4d07591f3bf;hb=71573c4556aef59cb31c9cf48e8e8f74d01df537;hpb=2bb4c7e384c31de4727f1330da3f4de2f0bb7784

diff --git a/src/shared/utf8.h b/src/shared/utf8.h
index 3d5a4c3a9..e745649f0 100644
--- a/src/shared/utf8.h
+++ b/src/shared/utf8.h
@@ -27,6 +27,8 @@
 
 #define UTF8_REPLACEMENT_CHARACTER "\xef\xbf\xbd"
 
+bool unichar_is_valid(uint32_t c);
+
 const char *utf8_is_valid(const char *s) _pure_;
 char *ascii_is_valid(const char *s) _pure_;
 
@@ -41,3 +43,15 @@ char *utf16_to_utf8(const void *s, size_t length);
 
 int utf8_encoded_valid_unichar(const char *str);
 int utf8_encoded_to_unichar(const char *str);
+
+static inline bool utf16_is_surrogate(uint16_t c) {
+        return (0xd800 <= c && c <= 0xdfff);
+}
+
+static inline bool utf16_is_trailing_surrogate(uint16_t c) {
+        return (0xdc00 <= c && c <= 0xdfff);
+}
+
+static inline uint32_t utf16_surrogate_pair_to_unichar(uint16_t lead, uint16_t trail) {
+                return ((lead - 0xd800) << 10) + (trail - 0xdc00) + 0x10000;
+}