Implements loading of proto files

.gitignore

@@ -0,0 +1 @@
+build/*

CMakeLists.txt

@@ -0,0 +1,14 @@
+cmake_minimum_required(VERSION 3.10)
+
+project(EsriAssignment)
+
+set(CMAKE_CXX_STANDARD 17)
+
+find_package(Protobuf REQUIRED)
+include_directories(${PROTOBUF_INCLUDE_DIR})
+include_directories(${CMAKE_CURRENT_BINARY_DIR})
+
+add_subdirectory(protocol_buffers_definitions)
+include_directories(src)
+add_subdirectory(src)
+

README.md

@@ -0,0 +1,23 @@
+# ESRI C++ code assignment
+
+## Setup
+
+```
+aptitude install protobuf-compiler libprotobuf-c-dev ##libprotoc-dev
+```
+
+## Build
+
+```
+mkdir build
+cd build
+cmake ..
+make
+```
+
+
+## Links
+* https://developers.google.com/protocol-buffers/docs/cpptutorial
+* https://github.com/protocolbuffers/protobuf/tree/master/examples
+* https://cmake.org/cmake/help/latest/module/FindProtobuf.html
+

protocol_buffers_definitions/CMakeLists.txt

@@ -0,0 +1,14 @@
+find_package(Protobuf REQUIRED)
+include_directories(${PROTOBUF_INCLUDE_DIR})
+
+set(PROTO_LIST
+  locatorevents.proto
+  positions.proto
+  recordings.proto
+  sensors.proto
+  structures.proto
+)
+protobuf_generate_cpp(PROTO_SRC PROTO_HEADER ${PROTO_LIST})
+add_library(proto ${PROTO_HEADER} ${PROTO_SRC})
+set_target_properties(proto PROPERTIES PUBLIC_HEADER "${PROTO_HEADER}")
+

src/CMakeLists.txt

@@ -0,0 +1,6 @@
+
+set(assignment_SOURCES
+  main.cpp)
+
+add_executable(main ${assignment_SOURCES})
+target_link_libraries(main proto ${PROTOBUF_LIBRARY})

src/main.cpp

@@ -0,0 +1,40 @@
+#include <fstream>
+#include <iostream>
+
+#include "protocol_buffers_definitions/recordings.pb.h"
+
+
+using namespace ::indoors::proto;
+
+int main(int argc, char* argv[])
+{
+  // Verify that the version of the library that we linked against is
+  // compatible with the version of the headers we compiled against.
+  GOOGLE_PROTOBUF_VERIFY_VERSION;
+
+  std::cout << "ESRI C++ code assignment\n";
+
+  Recording recording;
+  Position positions;
+
+  std::fstream input(argv[1], std::ios::in | std::ios::binary);
+  if (!recording.ParseFromIstream(&input)) {
+    std::cerr << "Failed to parse input file.\n";
+    return -1;
+  }
+  std::cout.precision(17);
+  for (int i=0; i < recording.magnetics_size(); i++) {
+    auto const& s = recording.magnetics(i);
+    std::cout << s.t() << ": [" << s.x() << ", " << s.y() << ", " << s.z() << "]\n";
+  }
+  for (int i=0; i < recording.positions_size(); i++) {
+    auto const& s = recording.positions(i);
+    std::cout << s.t() << ": [" << s.x() << ", " << s.y() << "]\n";
+  }
+
+  // Optional:  Delete all global objects allocated by libprotobuf.
+  google::protobuf::ShutdownProtobufLibrary();
+
+  return 0;
+}
+