add blake test to 01 example

Author: AnastaZIuk

01_HelloCoreSystemAsset/CMakeLists.txt

@@ -25,4 +25,12 @@ if(NBL_EMBED_BUILTIN_RESOURCES)
 	endif()
 
 	LINK_BUILTIN_RESOURCES_TO_TARGET(${EXECUTABLE_NAME} ${_BR_TARGET_})
+endif()
+
+# temporary
+option(NBL_BLAKE_EX_01_TEST "Test native blake3 with 01 example" OFF)
+
+if(NBL_BLAKE_EX_01_TEST)
+	target_link_libraries(${EXECUTABLE_NAME} PUBLIC blake3)
+	target_compile_definitions(${EXECUTABLE_NAME} PUBLIC NBL_ENABLE_BLAKE_TEST)
 endif()

01_HelloCoreSystemAsset/main.cpp

@@ -10,8 +10,13 @@
 #include "nbl/system/CColoredStdoutLoggerWin32.h"
 #include "nbl/system/IApplicationFramework.h"
 
+#include "blake3.h"
 #include <iostream>
 #include <cstdio>
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
 
 // if this config cmake flag is available then we embedded resources using cmake into C++ source
 #ifdef NBL_EMBED_BUILTIN_RESOURCES
@@ -252,6 +257,38 @@ int main(int argc, char** argv)
 		wp.workingDirectory = CWD;
 		assetManager->writeAsset("pngWriteSuccessful.png", wp);
 	}
+
+#ifdef NBL_ENABLE_BLAKE_TEST
+	// blake3 hash. TODO: use with Nabla
+	{
+		// Initialize the hasher.
+		blake3_hasher hasher;
+		blake3_hasher_init(&hasher);
+
+		std::array<unsigned char, 65536> buf;
+		while (true) 
+		{
+			std::cin.getline(reinterpret_cast<char*>(buf.data()), buf.size());
+			std::streamsize n = std::cin.gcount();
+
+			if (n < 2 || std::cin.eof())
+				break;
+			else
+				blake3_hasher_update(&hasher, buf.data(), n);
+		}
+
+		// Finalize the hash. BLAKE3_OUT_LEN is the default output length, 32 bytes.
+		uint8_t output[BLAKE3_OUT_LEN];
+		blake3_hasher_finalize(&hasher, output, BLAKE3_OUT_LEN);
+
+		// Print the hash as hexadecimal.
+		for (size_t i = 0; i < BLAKE3_OUT_LEN; i++) {
+			printf("%02x", output[i]);
+		}
+		printf("\n");
+	}
+#endif // NBL_ENABLE_BLAKE_TEST
+
 	//JPEG loader test
 	if (auto cpuImage = checkedLoad.operator()<nbl::asset::ICPUImage>("dwarf.jpg"))
 	{