a

libc/fmtvprint.c

@@ -0,0 +1,31 @@
+#include <u.h>
+#include <libc.h>
+#include "fmtdef.h"
+
+
+/*
+ * format a string into the output buffer
+ * designed for formats which themselves call fmt,
+ * but ignore any width flags
+ */
+int
+fmtvprint(Fmt *f, char *fmt, va_list args)
+{
+	va_list va;
+	int n;
+
+	f->flags = 0;
+	f->width = 0;
+	f->prec = 0;
+	va = f->args;
+	f->args = args;
+	n = dofmt(f, fmt);
+	f->flags = 0;
+	f->width = 0;
+	f->prec = 0;
+	f->args = va;
+	if(n >= 0)
+		return 0;
+	return n;
+}
+