From 37da2899f40661e3e9631e497da8dc59b971cbd0 Mon Sep 17 00:00:00 2001
From: "Charles.Forsyth" <devnull@localhost>
Date: Fri, 22 Dec 2006 17:07:39 +0000
Subject: 20060303a

---
 libbio/bgetrune.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 46 insertions(+)
 create mode 100644 libbio/bgetrune.c

(limited to 'libbio/bgetrune.c')

diff --git a/libbio/bgetrune.c b/libbio/bgetrune.c
new file mode 100644
index 00000000..ed216379
--- /dev/null
+++ b/libbio/bgetrune.c
@@ -0,0 +1,46 @@
+#include	"lib9.h"
+#include	<bio.h>
+
+long
+Bgetrune(Biobuf *bp)
+{
+	int c, i;
+	Rune rune;
+	char str[4];
+
+	c = Bgetc(bp);
+	if(c < Runeself) {		/* one char */
+		bp->runesize = 1;
+		return c;
+	}
+	str[0] = c;
+
+	for(i=1;;) {
+		c = Bgetc(bp);
+		if(c < 0)
+			return c;
+		str[i++] = c;
+
+		if(fullrune(str, i)) {
+			bp->runesize = chartorune(&rune, str);
+			while(i > bp->runesize) {
+				Bungetc(bp);
+				i--;
+			}
+			return rune;
+		}
+	}
+}
+
+int
+Bungetrune(Biobuf *bp)
+{
+
+	if(bp->state == Bracteof)
+		bp->state = Bractive;
+	if(bp->state != Bractive)
+		return Beof;
+	bp->icount -= bp->runesize;
+	bp->runesize = 0;
+	return 1;
+}
-- 
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