1 files changed, 30 insertions, 0 deletions
diff --git a/fitsy++/outchannel.C b/fitsy++/outchannel.C
new file mode 100644
index 0000000..d79c74c
--- /dev/null
+++ b/fitsy++/outchannel.C
@@ -0,0 +1,30 @@
+// Copyright (C) 1999-2018
+// Smithsonian Astrophysical Observatory, Cambridge, MA, USA
+// For conditions of distribution and use, see copyright notice in "copyright"
+
+#include <tcl.h>
+
+#include "outchannel.h"
+
+OutFitsChannel::OutFitsChannel(Tcl_Interp* interp, const char* ch)
+{
+  int tclMode;
+  if ((ch_ = Tcl_GetChannel(interp, (char*)ch, &tclMode)))
+    valid_ = 1;
+}
+
+int OutFitsChannel::write(char* where, size_t size)
+{
+  // size_t size is unsigned
+  long long ss =size;
+  size_t rr = 0;
+  int r = 0;
+
+  do {
+    r = Tcl_Write(ch_, where+rr, (ss>B1MB) ? B1MB : ss);
+    ss -= r;
+    rr += r;
+  } while (r>0 && rr<size);
+
+  return rr;
+}