From 28ad019d62583b7e89b4e76922aa73857d5876eb Mon Sep 17 00:00:00 2001
From: Sebastiano Tronto <sebastiano@tronto.net>
Date: Tue, 28 May 2024 15:42:26 +0200
Subject: Added roadmap for refactor and some simple routines

---
 src/cube_routines.h | 41 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)

(limited to 'src/cube_routines.h')

diff --git a/src/cube_routines.h b/src/cube_routines.h
index fb19355..3730e90 100644
--- a/src/cube_routines.h
+++ b/src/cube_routines.h
@@ -12,6 +12,10 @@ _static cube_t readcube_LST(const char *);
 _static int writepiece_LST(uint8_t, char *);
 _static void writecube_H48(cube_t, char *);
 _static void writecube_LST(cube_t, char *);
+_static uint8_t b32toedge(char);
+_static uint8_t b32tocorner(char);
+_static char edgetob32(uint8_t);
+_static char cornertob32(uint8_t);
 _static uint8_t readmove(char);
 _static uint8_t readmodifier(char);
 _static uint8_t readtrans(const char *);
@@ -493,6 +497,43 @@ writecube_LST(cube_t cube, char *buf)
 	*(buf+ptr-2) = 0;
 }
 
+_static uint8_t
+b32toedge(char c)
+{
+	DBG_ASSERT((c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'g'), 255,
+	    "Error reading base32 piece");
+
+	return c <= 'Z' ? (uint8_t)(c - 'A') : (uint8_t)(c - 'a');
+}
+
+_static uint8_t
+b32tocorner(char c) {
+	uint8_t val;
+
+	DBG_ASSERT((c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'g'), 255,
+	    "Error reading base32 piece");
+
+	val = c <= 'Z' ? (uint8_t)(c - 'A') : (uint8_t)(c - 'a') + 26;
+
+	return (val & 7) | ((val & 24) << 2);
+}
+
+_static char
+edgetob32(uint8_t edge)
+{
+	return edge <= 26 ? 'A' + (char)edge : 'a' + (char)(edge - 26);
+}
+
+_static char
+cornertob32(uint8_t corner)
+{
+	uint8_t val;
+
+	val = (corner & 7) | ((corner & 96) >> 2);
+
+	return val <= 26 ? 'A' + (char)val : 'a' + (char)(val - 26);
+}
+
 _static uint8_t
 readmove(char c)
 {
-- 
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