From 40bf70fb8f23e5ff7212b568c69e0725372e5b57 Mon Sep 17 00:00:00 2001
From: Mattias Andrée <m@maandree.se>
Date: Wed, 28 Jan 2026 22:03:48 +0100
Subject: Clean up
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Signed-off-by: Mattias Andrée <m@maandree.se>
---
 lib-common.h | 90 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 90 insertions(+)

(limited to 'lib-common.h')

diff --git a/lib-common.h b/lib-common.h
index eb8cab9..2ab89a0 100644
--- a/lib-common.h
+++ b/lib-common.h
@@ -1,7 +1,97 @@
 /* See LICENSE file for copyright and license details. */
 #include "libcharconv.h"
+#include <ctype.h>
 #include <string.h>
 #include <strings.h>
 
 
 size_t libcharconv_decode_utf8_(const char *s, size_t slen, uint_least32_t *cp);
+
+extern const unsigned char libcharconv_yijing_hexagrams_[];
+
+
+#define CYCLE_2(A, B)\
+	{UINT32_C(A), UINT32_C(B)},\
+	{UINT32_C(B), UINT32_C(A)}
+
+#define CYCLE_4(A, B, C, D)\
+	{UINT32_C(A), UINT32_C(B)},\
+	{UINT32_C(B), UINT32_C(C)},\
+	{UINT32_C(C), UINT32_C(D)},\
+	{UINT32_C(D), UINT32_C(A)}
+
+#define CYCLE_8(A, B, C, D, E, F, G, H)\
+	{UINT32_C(A), UINT32_C(B)},\
+	{UINT32_C(B), UINT32_C(C)},\
+	{UINT32_C(C), UINT32_C(D)},\
+	{UINT32_C(D), UINT32_C(E)},\
+	{UINT32_C(E), UINT32_C(F)},\
+	{UINT32_C(F), UINT32_C(G)},\
+	{UINT32_C(G), UINT32_C(H)},\
+	{UINT32_C(H), UINT32_C(A)}
+
+
+#define PLAIN_RANGE(FIRST, LAST, FIRST_CP)\
+	do {\
+		if ((FIRST) <= *s && *s <= (LAST)) { \
+			c = (uint_least32_t)(UINT32_C(FIRST_CP) + (unsigned)(*s - (FIRST)));\
+			goto conv;\
+		}\
+	} while (0)
+
+#define PLAIN_CASE_RANGE(FIRST, LAST, FIRST_CP)\
+	do {\
+		if (tolower(FIRST) <= tolower(*s) && tolower(*s) <= tolower(LAST)) { \
+			c = (uint_least32_t)(UINT32_C(FIRST_CP) + (unsigned)(tolower(*s) - tolower(FIRST)));\
+			goto conv;\
+		}\
+	} while (0)
+
+#define PLAIN_SINGLE(C, CP)\
+	do {\
+		if (*s == (C)) {\
+			c = (uint_least32_t)UINT32_C(CP);\
+			goto conv;\
+		}\
+	} while (0)
+
+#define PLAIN_CASE_SINGLE(C, CP)\
+	do {\
+		if (*s == tolower(C) || *s == toupper(C)) {\
+			c = (uint_least32_t)UINT32_C(CP);\
+			goto conv;\
+		}\
+	} while (0)
+
+#define PLAIN_SELECT(CS, FIRST_CP)\
+	do {\
+		size_t i__;\
+		for (i__ = 0u; (CS)[i__]; i__++) {\
+			if (*s == (CS)[i__]) {\
+				c = (uint_least32_t)(UINT32_C(FIRST_CP) + i__);\
+				goto conv;\
+			}\
+		}\
+	} while (0)
+
+#define PLAIN_CASE_SELECT(CS, FIRST_CP)\
+	do {\
+		size_t i__;\
+		for (i__ = 0u; (CS)[i__]; i__++) {\
+			if (*s == tolower((CS)[i__]) || *s == toupper((CS)[i__])) {\
+				c = (uint_least32_t)(UINT32_C(FIRST_CP) + i__); \
+				goto conv;\
+			}\
+		}\
+	} while (0)
+
+#define PLAIN_RANGE_SWAP(LOW_FIRST, LOW_LAST, HIGH_FIRST, HIGH_LAST)\
+	do {\
+		if (UINT32_C(LOW_FIRST) <= c && c <= UINT32_C(LOW_LAST)) {\
+			c += UINT32_C(HIGH_FIRST) - UINT32_C(LOW_FIRST);\
+			goto conv;\
+		} else if (UINT32_C(HIGH_FIRST) <= c && c <= UINT32_C(HIGH_LAST)) {\
+			c -= UINT32_C(HIGH_FIRST) - UINT32_C(LOW_FIRST);\
+			goto conv;\
+		}\
+	} while (0)
-- 
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