1 files changed, 51 insertions, 0 deletions
diff --git a/libcharconv_scores.c b/libcharconv_scores.c
new file mode 100644
index 0000000..0c6e38f
--- /dev/null
+++ b/libcharconv_scores.c
@@ -0,0 +1,51 @@
+/* See LICENSE file for copyright and license details. */
+#include "lib-common.h"
+
+
+enum libcharconv_result
+libcharconv_scores(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++) {
+		if (*s == '1') {
+			if (*n)
+				goto no_conv;
+			if (!slen)
+				return LIBCHARCONV_INDETERMINATE;
+			if (s[1] != '0')
+				goto no_match;
+			*n = 2u;
+			c = UINT32_C(0x1F51F);
+			if (slen == 1u)
+				goto conv_if_end;
+			if (s[2] == '0') {
+				*n += 1u;
+				c = UINT32_C(0x1F4AF);
+			}
+			goto conv;
+		} else if (*s == '*') {
+			if (*n)
+				goto no_conv;
+			*n = 1u;
+			c = UINT32_C(0x1F4AE);
+			goto conv;
+		} else {
+		no_match:
+			*n += 1u;
+		}
+	}
+no_conv:
+	return LIBCHARCONV_NO_CONVERT;
+
+conv:
+	if (*ncp)
+		*cp = c;
+	*ncp = 1u;
+	return LIBCHARCONV_CONVERTED;
+conv_if_end:
+	if (*ncp)
+		*cp = c;
+	*ncp = 1u;
+	return LIBCHARCONV_CONVERT_IF_END;
+}