1 files changed, 36 insertions, 0 deletions
diff --git a/util/sbase/libutf/fgetrune.c b/util/sbase/libutf/fgetrune.c
new file mode 100644
index 00000000..8cd78c64
--- /dev/null
+++ b/util/sbase/libutf/fgetrune.c
@@ -0,0 +1,36 @@
+/* See LICENSE file for copyright and license details. */
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "../utf.h"
+
+int
+fgetrune(Rune *r, FILE *fp)
+{
+	char buf[UTFmax];
+	int  i = 0, c;
+
+	while (i < UTFmax && (c = fgetc(fp)) != EOF) {
+		buf[i++] = c;
+		if (charntorune(r, buf, i) > 0)
+			break;
+	}
+	if (ferror(fp))
+		return -1;
+
+	return i;
+}
+
+int
+efgetrune(Rune *r, FILE *fp, const char *file)
+{
+	int ret;
+
+	if ((ret = fgetrune(r, fp)) < 0) {
+		fprintf(stderr, "fgetrune %s: %s\n", file, strerror(errno));
+		exit(1);
+	}
+	return ret;
+}