1 files changed, 28 insertions, 0 deletions
diff --git a/includes/image_io/utils/string_outputter_message_writer.h b/includes/image_io/utils/string_outputter_message_writer.h
new file mode 100644
index 0000000..f34d975
--- /dev/null
+++ b/includes/image_io/utils/string_outputter_message_writer.h
@@ -0,0 +1,28 @@
+#ifndef IMAGE_IO_UTILS_STRING_OUTPUTTER_MESSAGE_WRITER_H_  // NOLINT
+#define IMAGE_IO_UTILS_STRING_OUTPUTTER_MESSAGE_WRITER_H_  // NOLINT
+
+#include "image_io/base/message_writer.h"
+#include "image_io/utils/string_outputter.h"
+
+namespace photos_editing_formats {
+namespace image_io {
+
+/// A MessageWriter that writes the messages to the StringOutputter function.
+class StringOutputterMessageWriter : public MessageWriter {
+ public:
+  /// @param outputter The outputter function to write messages to.
+  explicit StringOutputterMessageWriter(const StringOutputter& outputter)
+      : outputter_(outputter) {}
+  void WriteMessage(const Message& message) override {
+    outputter_(GetFormattedMessage(message));
+    outputter_("\n");
+  }
+
+ private:
+  StringOutputter outputter_;
+};
+
+}  // namespace image_io
+}  // namespace photos_editing_formats
+
+#endif  // IMAGE_IO_UTILS_STRING_OUTPUTTER_MESSAGE_WRITER_H_  // NOLINT