Added C++ utils for parsing protos from text files for iOS tests.

mediapipe/tasks/ios/test/vision/utils/BUILD

@@ -9,3 +9,13 @@ objc_library(
     module_name = "MPPImageTestUtils",
     deps = ["//mediapipe/tasks/ios/vision/core:MPPImage"],
 )
+
+cc_library(
+    name = "parse_proto_utils",
+    srcs = ["sources/parse_proto_utils.cc"],
+    hdrs = ["sources/parse_proto_utils.h"],
+    deps = [ 
+        "@com_google_absl//absl/status",  
+        "@com_google_protobuf//:protobuf",
+    ],
+)

mediapipe/tasks/ios/test/vision/utils/sources/parse_proto_utils.cc

@@ -0,0 +1,42 @@
+/* Copyright 2023 The MediaPipe Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+==============================================================================*/
+
+#include "mediapipe/tasks/ios/test/vision/utils/sources/parse_proto_utils.h"
+
+#include <fstream>
+#include <sstream>
+
+namespace mediapipe::tasks::ios::test::vision::utils {
+
+namespace {
+using ::google::protobuf::TextFormat;
+}  // anonymous namespace
+
+absl::Status get_proto_from_pbtxt(const std::string file_path,
+                                  google::protobuf::Message& proto) {
+  std::ifstream file_input_stream(file_path);
+  if (!file_input_stream.is_open())
+    return absl::InvalidArgumentError("Cannot read input file.");
+
+  std::stringstream strings_stream;
+  strings_stream << file_input_stream.rdbuf();
+
+  return TextFormat::ParseFromString(strings_stream.str(), &proto)
+             ? absl::OkStatus()
+             : absl::InvalidArgumentError(
+                   "Cannot read a valid proto from the input file.");
+}
+
+}  // namespace mediapipe::tasks::ios::test::vision::utils

mediapipe/tasks/ios/test/vision/utils/sources/parse_proto_utils.h

@@ -0,0 +1,29 @@
+/* Copyright 2023 The MediaPipe Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+==============================================================================*/
+
+#ifndef MEDIAPIPE_TASKS_IOS_TEST_VISION_UTILS_H_
+#define MEDIAPIPE_TASKS_IOS_TEST_VISION_UTILS_H_
+
+#include <string>
+
+#include "absl/status/status.h"
+#include "google/protobuf/text_format.h"
+
+namespace mediapipe::tasks::ios::test::vision::utils {
+absl::Status get_proto_from_pbtxt(const std::string file_path,
+                                  google::protobuf::Message& proto);
+}  // namespace mediapipe::tasks::ios::test::vision::utils
+
+#endif  // MEDIAPIPE_TASKS_IOS_TEST_VISION_UTILS_H_