1 files changed, 37 insertions, 0 deletions
diff --git a/tools/libxutil/iostream.c b/tools/libxutil/iostream.c
new file mode 100644
index 0000000000..e9980838f7
--- /dev/null
+++ b/tools/libxutil/iostream.c
@@ -0,0 +1,37 @@
+#include "iostream.h"
+#include "sys_string.h"
+
+/** Print on a stream, like vfprintf().
+ *
+ * @param stream to print to
+ * @param format for the print (as fprintf())
+ * @param args arguments to print
+ * @return result code from the print
+ */
+int IOStream_vprint(IOStream *stream, const char *format, va_list args){
+  char buffer[1024];
+  int k = sizeof(buffer), n;
+
+  n = vsnprintf(buffer, k, (char*)format, args);
+  if(n < 0 || n > k ){
+      n = k;
+  }
+  n = IOStream_write(stream, buffer, n);
+  return n;
+}
+
+/** Print on a stream, like fprintf().
+ *
+ * @param stream to print to
+ * @param format for the print (as fprintf())
+ * @return result code from the print
+ */
+int IOStream_print(IOStream *stream, const char *format, ...){
+  va_list args;
+  int result = -1;
+
+  va_start(args, format);
+  result = IOStream_vprint(stream, format, args);
+  va_end(args);
+  return result;
+}