1 files changed, 84 insertions, 0 deletions
diff --git a/libcharconv_tagbanwa.c b/libcharconv_tagbanwa.c
new file mode 100644
index 0000000..fd23d8c
--- /dev/null
+++ b/libcharconv_tagbanwa.c
@@ -0,0 +1,84 @@
+/* See LICENSE file for copyright and license details. */
+#include "lib-common.h"
+
+
+enum libcharconv_result
+libcharconv_tagbanwa(const char *s, size_t slen, size_t *n, uint_least32_t *cp, size_t *ncp)
+{
+	uint_least32_t c;
+	*n = 0;
+	for (; slen--; s++) {
+		PLAIN_SELECT("kgGtdnpbmylws", 0x1763);
+		switch (s[0]) {
+		case 'a': c = UINT32_C(0x1760); goto conv1;
+		case 'i': c = UINT32_C(0x1761); goto conv1;
+		case 'u': c = UINT32_C(0x1762); goto conv1;
+		case '^':
+			if (!slen)
+				return LIBCHARCONV_INDETERMINATE;
+			switch (s[1]) {
+			case 'i': c = UINT32_C(0x1772); goto conv2;
+			case 'u': c = UINT32_C(0x1773); goto conv2;
+			default:
+				goto no_match;
+			}
+			goto no_match;
+		default:
+		no_match:
+			*n += 1u;
+			break;
+		}
+	}
+no_conv:
+	return LIBCHARCONV_NO_CONVERT;
+
+conv:
+	if (*n)
+		goto no_conv;
+	if (!slen)
+		return LIBCHARCONV_INDETERMINATE;
+	switch (s[1]) {
+	case 'a':
+		if (*ncp >= 1u)
+			cp[0] = c;
+		*n += 2u;
+		*ncp = 1u;
+		return LIBCHARCONV_CONVERTED;
+	case 'i':
+		if (*ncp >= 1u)
+			cp[0] = c;
+		if (*ncp >= 2u)
+			cp[1] = UINT32_C(0x1772);
+		*n += 2u;
+		*ncp = 2u;
+		return LIBCHARCONV_CONVERTED;
+	case 'u':
+		if (*ncp >= 1u)
+			cp[0] = c;
+		if (*ncp >= 2u)
+			cp[1] = UINT32_C(0x1773);
+		*n += 2u;
+		*ncp = 2u;
+		return LIBCHARCONV_CONVERTED;
+	default:
+		goto no_match;
+	}
+
+conv1:
+	if (*n)
+		goto no_conv;
+	if (*ncp)
+		*cp = c;
+	*n += 1u;
+	*ncp = 1u;
+	return LIBCHARCONV_CONVERTED;
+
+conv2:
+	if (*n)
+		goto no_conv;
+	if (*ncp)
+		*cp = c;
+	*n += 2u;
+	*ncp = 1u;
+	return LIBCHARCONV_CONVERTED;
+}