From 184526f3bf90e2948b1d09b9da58d66814181f4d Mon Sep 17 00:00:00 2001
From: Peter Mikkelsen <petermikkelsen10@gmail.com>
Date: Wed, 15 Oct 2025 19:46:13 +0200
Subject: Import sam and samterm sources

---
 sam/util.c | 54 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 54 insertions(+)
 create mode 100644 sam/util.c

(limited to 'sam/util.c')

diff --git a/sam/util.c b/sam/util.c
new file mode 100644
index 0000000..b259968
--- /dev/null
+++ b/sam/util.c
@@ -0,0 +1,54 @@
+#include "sam.h"
+
+void
+cvttorunes(char *p, int n, Rune *r, int *nb, int *nr, int *nulls)
+{
+	uchar *q;
+	Rune *s;
+	int j, w;
+
+	/*
+	 * Always guaranteed that n bytes may be interpreted
+	 * without worrying about partial runes.  This may mean
+	 * reading up to UTFmax-1 more bytes than n; the caller
+	 * knows this.  If n is a firm limit, the caller should
+	 * set p[n] = 0.
+	 */
+	q = (uchar*)p;
+	s = r;
+	for(j=0; j<n; j+=w){
+		if(*q < Runeself){
+			w = 1;
+			*s = *q++;
+		}else{
+			w = chartorune(s, (char*)q);
+			q += w;
+		}
+		if(*s)
+			s++;
+		else if(nulls)
+			*nulls = TRUE;
+	}
+	*nb = (char*)q-p;
+	*nr = s-r;
+}
+
+void*
+fbufalloc(void)
+{
+	return emalloc(BUFSIZE);
+}
+
+void
+fbuffree(void *f)
+{
+	free(f);
+}
+
+uint
+min(uint a, uint b)
+{
+	if(a < b)
+		return a;
+	return b;
+}
-- 
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