Add variation selectors

Signed-off-by: Mattias Andrée <m@maandree.se>

1 files changed, 28 insertions, 0 deletions

diff --git a/libcharconv_latin.c b/libcharconv_latin.c
index 25aae91..d3c1817 100644
--- a/libcharconv_latin.c
+++ b/libcharconv_latin.c
@@ -9,6 +9,7 @@ libcharconv_latin(const char *s, size_t slen, size_t *n, uint_least32_t *cp, siz
 	uint_least32_t c;
 	char c1, c2, c3, c4;
 	size_t clen;
+	unsigned num;
 
 	*n = 0;
 	while (slen) {
@@ -273,6 +274,31 @@ libcharconv_latin(const char *s, size_t slen, size_t *n, uint_least32_t *cp, siz
 			c3 = '.';
 			goto conv3;
 
+		} else if (UINT32_C(0xFE00) <= c && c <= UINT32_C(0xFE0F)) {
+			/* variation selectors */
+			num = (unsigned)(c - UINT32_C(0xFE00)) + 1u;
+			if (num < 10) {
+				c1 = (char)('0' + num);
+				goto conv1;
+			} else {
+				c1 = (char)('0' + num / 10);
+				c2 = (char)('0' + num % 10);
+				goto conv2;
+			}
+		} else if (UINT32_C(0xE0100) <= c && c <= UINT32_C(0xE01EF)) {
+			/* variation selectors */
+			num = (unsigned)(c - UINT32_C(0xE0100)) + 17u;
+			if (num < 100) {
+				c1 = (char)('0' + num / 10);
+				c2 = (char)('0' + num % 10);
+				goto conv2;
+			} else {
+				c1 = (char)('0' + num / 100);
+				c2 = (char)('0' + num / 10 % 10);
+				c3 = (char)('0' + num % 10);
+				goto conv3;
+			}
+
 		} else {
 			switch (c) {
 			/* shogi */
@@ -413,6 +439,8 @@ libcharconv_latin(const char *s, size_t slen, size_t *n, uint_least32_t *cp, siz
 no_conv:
 	return LIBCHARCONV_NO_CONVERT;
 
+conv1:
+	c = (uint_least32_t)c1;
 conv:
 	if (*n)
 		goto no_conv;