1 files changed, 25 insertions, 0 deletions
diff --git a/fitsy++/allocgz.C b/fitsy++/allocgz.C
new file mode 100644
index 0000000..b2bbba1
--- /dev/null
+++ b/fitsy++/allocgz.C
@@ -0,0 +1,25 @@
+// Copyright (C) 1999-2018
+// Smithsonian Astrophysical Observatory, Cambridge, MA, USA
+// For conditions of distribution and use, see copyright notice in "copyright"
+
+#include <unistd.h>
+#include "allocgz.h"
+
+FitsAllocGZ::FitsAllocGZ(const char* fn)
+{
+  parse(fn);
+  if (!valid_)
+    return;
+
+  // we need the 'b' for windows...
+  if (!strncmp(pName_, "stdin", 5) || 
+      !strncmp(pName_, "STDIN", 5) || 
+      !strncmp(pName_, "-", 1))
+    stream_ = gzdopen(dup(STDIN_FILENO), "rb");
+  else 
+    stream_ = gzopen(pName_, "rb");
+
+  valid_ = stream_ ? 1 : 0;
+}
+
+