From 8b94d135429a9f3253cc7f25a1453b412065c4a0 Mon Sep 17 00:00:00 2001
From: Sebastiano Tronto <sebastiano@tronto.net>
Date: Sun, 18 May 2025 08:48:13 +0200
Subject: Refactor solver dispatch and checkdata

---
 src/solvers/h48/utils.h | 66 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 66 insertions(+)
 create mode 100644 src/solvers/h48/utils.h

(limited to 'src/solvers/h48/utils.h')

diff --git a/src/solvers/h48/utils.h b/src/solvers/h48/utils.h
new file mode 100644
index 0000000..b266c66
--- /dev/null
+++ b/src/solvers/h48/utils.h
@@ -0,0 +1,66 @@
+long long parse_h48_hk(
+    const char *, uint8_t [static 1], uint8_t [static 1]);
+STATIC long long dataid_h48(const char *, char [static NISSY_SIZE_DATAID]);
+
+long long
+parse_h48_hk(const char *buf, uint8_t h[static 1], uint8_t k[static 1])
+{
+	char format_error_msg[100];
+	sprintf(format_error_msg, "[H48] Error parsing H48 solver: must be in "
+	    "'h48h*k*' format, but got '%s'\n", buf);
+
+	buf += 3;
+
+	if (*buf != 'h') {
+		LOG(format_error_msg);
+		goto parse_h48_hk_error;
+	}
+	buf++;
+
+	*h = atoi(buf);
+	if (*h > 11) {
+		LOG("[H48] Invalid value %" PRIu8 " for parameter h\n", *h);
+		goto parse_h48_hk_error;
+	}
+
+	for ( ; *buf >= 0 + '0' && *buf <= 9 + '0'; buf++) {
+		if (*buf == 0) {
+			LOG(format_error_msg);
+			goto parse_h48_hk_error;
+		}
+	}
+
+	if (*buf != 'k') {
+		LOG(format_error_msg);
+		goto parse_h48_hk_error;
+	}
+	buf++;
+
+	*k = atoi(buf);
+	if (!(*k == 2 || (*k == 4 && *h == 0))) {
+		LOG("[H48] Invalid combinations of values h=%" PRIu8 " and k=%"
+		    PRIu8 " for parameters h and k\n", *h, *k);
+		goto parse_h48_hk_error;
+	}
+
+	return NISSY_OK;
+
+parse_h48_hk_error:
+	*h = 0;
+	*k = 0;
+	return NISSY_ERROR_INVALID_SOLVER;
+}
+
+STATIC long long
+dataid_h48(const char *hk, char buf[static NISSY_SIZE_DATAID])
+{
+	uint8_t h, k;
+	long long err;
+
+	err = parse_h48_hk(hk, &h, &k);
+	if (err < 0)
+		return err;
+
+	sprintf(buf, "h48h%" PRIu8 "k%" PRIu8, h, k);
+	return NISSY_OK;
+}
-- 
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