1 files changed, 74 insertions, 0 deletions
diff --git a/src/core/surface/byte_buffer_reader.c b/src/core/surface/byte_buffer_reader.c
new file mode 100644
index 0000000000..18500b83e8
--- /dev/null
+++ b/src/core/surface/byte_buffer_reader.c
@@ -0,0 +1,74 @@
+/*
+ *
+ * Copyright 2014, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include <grpc/byte_buffer_reader.h>
+
+#include <grpc/grpc.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/slice_buffer.h>
+#include <grpc/byte_buffer.h>
+
+grpc_byte_buffer_reader *grpc_byte_buffer_reader_create(
+    grpc_byte_buffer *buffer) {
+  grpc_byte_buffer_reader *reader = malloc(sizeof(grpc_byte_buffer_reader));
+  reader->buffer = buffer;
+  switch (buffer->type) {
+    case GRPC_BB_SLICE_BUFFER:
+      reader->current.index = 0;
+  }
+  return reader;
+}
+
+int grpc_byte_buffer_reader_next(grpc_byte_buffer_reader *reader,
+                                 gpr_slice *slice) {
+  grpc_byte_buffer *buffer = reader->buffer;
+  gpr_slice_buffer *slice_buffer;
+  switch (buffer->type) {
+    case GRPC_BB_SLICE_BUFFER:
+      slice_buffer = &buffer->data.slice_buffer;
+      if (reader->current.index < slice_buffer->count) {
+        *slice = gpr_slice_ref(slice_buffer->slices[reader->current.index]);
+        reader->current.index += 1;
+        return 1;
+      } else {
+        return 0;
+      }
+      break;
+  }
+  return 0;
+}
+
+void grpc_byte_buffer_reader_destroy(grpc_byte_buffer_reader *reader) {
+  free(reader);
+}