Initial checkin of gRPC to third_party/

third_party/grpc/src/core/surface/byte_buffer.c

+/*
+ *
+ * Copyright 2015, 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.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+grpc_byte_buffer *grpc_raw_byte_buffer_create(gpr_slice *slices,
+                                              size_t nslices) {
+  return grpc_raw_compressed_byte_buffer_create(slices, nslices,
+                                                GRPC_COMPRESS_NONE);
+}
+
+grpc_byte_buffer *grpc_raw_compressed_byte_buffer_create(
+    gpr_slice *slices, size_t nslices, grpc_compression_algorithm compression) {
+  size_t i;
+  grpc_byte_buffer *bb = malloc(sizeof(grpc_byte_buffer));
+  bb->type = GRPC_BB_RAW;
+  bb->data.raw.compression = compression;
+  gpr_slice_buffer_init(&bb->data.raw.slice_buffer);
+  for (i = 0; i < nslices; i++) {
+    gpr_slice_ref(slices[i]);
+    gpr_slice_buffer_add(&bb->data.raw.slice_buffer, slices[i]);
+  }
+  return bb;
+}
+
+grpc_byte_buffer *grpc_raw_byte_buffer_from_reader(
+    grpc_byte_buffer_reader *reader) {
+  grpc_byte_buffer *bb = malloc(sizeof(grpc_byte_buffer));
+  gpr_slice slice;
+  bb->type = GRPC_BB_RAW;
+  bb->data.raw.compression = GRPC_COMPRESS_NONE;
+  gpr_slice_buffer_init(&bb->data.raw.slice_buffer);
+
+  while (grpc_byte_buffer_reader_next(reader, &slice)) {
+    gpr_slice_buffer_add(&bb->data.raw.slice_buffer, slice);
+  }
+  return bb;
+}
+
+grpc_byte_buffer *grpc_byte_buffer_copy(grpc_byte_buffer *bb) {
+  switch (bb->type) {
+    case GRPC_BB_RAW:
+      return grpc_raw_byte_buffer_create(bb->data.raw.slice_buffer.slices,
+                                         bb->data.raw.slice_buffer.count);
+  }
+  GPR_UNREACHABLE_CODE(return NULL);
+}
+
+void grpc_byte_buffer_destroy(grpc_byte_buffer *bb) {
+  if (!bb) return;
+  switch (bb->type) {
+    case GRPC_BB_RAW:
+      gpr_slice_buffer_destroy(&bb->data.raw.slice_buffer);
+      break;
+  }
+  free(bb);
+}
+
+size_t grpc_byte_buffer_length(grpc_byte_buffer *bb) {
+  switch (bb->type) {
+    case GRPC_BB_RAW:
+      return bb->data.raw.slice_buffer.length;
+  }
+  GPR_UNREACHABLE_CODE(return 0);
+}