[cpp] Simplify directory structure, add DebugPrinter program

- spine-cpp/spine-cpp was moved into spine-cpp directory, so spine-cpp/spine-cpp/src -> spine-cpp/src, spine-cpp/spine-cpp/include -> spine-cpp/include
- Added scaffold for DebugPrinter to be used by runtime comparison tests
- Added build.sh

spine-cpp/CMakeLists.txt

@@ -4,11 +4,11 @@ project(spine-cpp)
 include(${CMAKE_CURRENT_LIST_DIR}/../flags.cmake)
 
 include_directories(include)
-file(GLOB INCLUDES "spine-cpp/include/**/*.h")
-file(GLOB SOURCES "spine-cpp/src/**/*.cpp")
+file(GLOB INCLUDES "include/**/*.h")
+file(GLOB SOURCES "src/**/*.cpp")
 
 add_library(spine-cpp STATIC ${SOURCES} ${INCLUDES})
-target_include_directories(spine-cpp PUBLIC spine-cpp/include)
+target_include_directories(spine-cpp PUBLIC include)
 
 # Install target
 install(TARGETS spine-cpp EXPORT spine-cpp_TARGETS DESTINATION dist/lib)
@@ -18,4 +18,9 @@ install(FILES ${INCLUDES} DESTINATION dist/include)
 export(
 	EXPORT spine-cpp_TARGETS
 	FILE ${CMAKE_CURRENT_BINARY_DIR}/spine-cppTargets.cmake
-	NAMESPACE "Spine::")
+	NAMESPACE "Spine::")
+
+# Optional tests
+if(CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
+	add_subdirectory(tests)
+endif()

spine-cpp/build.sh

@@ -0,0 +1,16 @@
+#!/bin/bash
+set -e
+
+cd "$(dirname "$0")"
+
+for arg in "${@:-clean build}"; do
+    case $arg in
+        clean) rm -rf build ;;
+        build) 
+            mkdir -p build && cd build
+            [ -f CMakeCache.txt ] || cmake .. -DCMAKE_BUILD_TYPE=Debug
+            make -j$(sysctl -n hw.ncpu 2>/dev/null || nproc 2>/dev/null || echo 4)
+            cd ..
+            ;;
+    esac
+done

spine-cpp/include/spine/Sequence.h

@@ -54,7 +54,7 @@ namespace spine {
 
 		void apply(SlotPose* slot, Attachment* attachment);
 
-		String getPath(const String &basePath, int index);
+		String &getPath(const String &basePath, int index);
 
 		/// Returns a unique ID for this attachment.
 		int getId() { return _id; }
@@ -83,6 +83,7 @@ namespace spine {
 		int _start;
 		int _digits;
 		int _setupIndex;
+		String _tmpPath;
 
 		static int nextID();
 	};