nearby: snapshot as of cl/296436629

Signed-off-by: Alexey Polyudov <apolyudov@google.com>
Change-Id: I2cf5bf225b76f4c1541954651f3a7544a14e0cec

cpp/platform/api/output_file.h

@@ -0,0 +1,26 @@
+#ifndef PLATFORM_API_OUTPUT_FILE_H_
+#define PLATFORM_API_OUTPUT_FILE_H_
+
+#include "platform/byte_array.h"
+#include "platform/exception.h"
+#include "platform/ptr.h"
+
+namespace location {
+namespace nearby {
+
+// An OutputFile represents a writable file on the system.
+class OutputFile {
+ public:
+  virtual ~OutputFile() {}
+
+  // Takes ownership of the passed-in ConstPtr, and ensures that it is destroyed
+  // even upon error (i.e. when the return value is not Exception::NONE).
+  virtual Exception::Value write(
+      ConstPtr<ByteArray> data) = 0;  // throws Exception::IO
+  virtual void close() = 0;
+};
+
+}  // namespace nearby
+}  // namespace location
+
+#endif  // PLATFORM_API_OUTPUT_FILE_H_