add file_path.mm for bundle resource path

src/app/core/platform/file_path.h

@@ -0,0 +1,6 @@
+#ifndef YAZE_APP_CORE_PLATFORM_FILE_PATH_H
+#define YAZE_APP_CORE_PLATFORM_FILE_PATH_H
+
+std::string GetBundleResourcePath();
+
+#endif  // YAZE_APP_CORE_PLATFORM_FILE_PATH_H

src/app/core/platform/file_path.mm

@@ -0,0 +1,26 @@
+#include <iostream>
+#include <string>
+
+#if defined(__APPLE__) && defined(__MACH__)
+#include <Foundation/Foundation.h>
+#include <TargetConditionals.h>
+
+#if TARGET_IPHONE_SIMULATOR == 1
+std::string GetBundleResourcePath() {}
+#elif TARGET_OS_IPHONE == 1
+std::string GetBundleResourcePath() {
+  NSBundle* bundle = [NSBundle mainBundle];
+  NSString* resourceDirectoryPath = [bundle bundlePath];
+  NSString* path = [resourceDirectoryPath stringByAppendingString:@"/"];
+  return [path UTF8String];
+}
+#elif TARGET_OS_MAC == 1
+std::string GetBundleResourcePath() {
+  NSBundle* bundle = [NSBundle mainBundle];
+  NSString* resourceDirectoryPath = [bundle bundlePath];
+  NSString* path = [resourceDirectoryPath stringByAppendingString:@"/"];
+  return [path UTF8String];
+}
+
+#endif
+#endif