From a504f02fa8cbf771c26c74272a53ae6dc69c9c8a Mon Sep 17 00:00:00 2001
From: Woongsuk Cho <ws77.cho@samsung.com>
Date: Thu, 4 Apr 2019 14:01:49 +0900
Subject: [PATCH] remove dependency from multiByteToWideChar

multiByteToWideChar() removed from unix exports from coreclr 3.0.0 prev 3
So, add char* to char16_t* API and use that
---
 NativeLauncher/launcher/dotnet/dotnet_launcher.cc | 21 ++++++++++++---------
 NativeLauncher/launcher/dotnet/dotnet_launcher.h  |  1 -
 2 files changed, 12 insertions(+), 10 deletions(-)

diff --git a/NativeLauncher/launcher/dotnet/dotnet_launcher.cc b/NativeLauncher/launcher/dotnet/dotnet_launcher.cc
index 2f946c9..1464d9b 100644
--- a/NativeLauncher/launcher/dotnet/dotnet_launcher.cc
+++ b/NativeLauncher/launcher/dotnet/dotnet_launcher.cc
@@ -23,6 +23,9 @@
 #include <vector>
 #include <sstream>
 
+#include <locale>
+#include <codecvt>
+
 #include <fcntl.h>
 #include <sys/stat.h>
 #include <sys/types.h>
@@ -221,13 +224,19 @@ static void initEnvForSpecialFolder()
 	}
 }
 
+static std::u16string utf8ToUtf16(char* str)
+{
+	std::wstring_convert<std::codecvt_utf8_utf16<char16_t>, char16_t> convert;
+	return convert.from_bytes(str);
+}
+
+
 CoreRuntime::CoreRuntime(const char* mode) :
 	initializeClr(nullptr),
 	executeAssembly(nullptr),
 	shutdown(nullptr),
 	createDelegate(nullptr),
 	setEnvironmentVariable(nullptr),
-	multiByteToWideChar(nullptr),
 	__coreclrLib(nullptr),
 	__hostHandle(nullptr),
 	__domainId(-1),
@@ -348,7 +357,6 @@ int CoreRuntime::initialize(bool standalone)
 	CORELIB_RETURN_IF_NOSYM(coreclr_shutdown_ptr, shutdown, "coreclr_shutdown");
 	CORELIB_RETURN_IF_NOSYM(coreclr_create_delegate_ptr, createDelegate, "coreclr_create_delegate");
 	CORELIB_RETURN_IF_NOSYM(set_environment_variable_ptr, setEnvironmentVariable, "SetEnvironmentVariableW");
-	CORELIB_RETURN_IF_NOSYM(multi_byte_to_wide_char_ptr, multiByteToWideChar, "MultiByteToWideChar");
 
 #undef CORELIB_RETURN_IF_NOSYM
 
@@ -491,15 +499,10 @@ int CoreRuntime::launch(const char* appId, const char* root, const char* path, i
 	// application data path can be changed by owner. So, we have to set data path just before launching.
 	char* localDataPath = app_get_data_path();
 	if (localDataPath != nullptr) {
-		char16_t envval[PATH_MAX] = {0};
-		int copied = multiByteToWideChar(0 /* CP_ACP */, 0, localDataPath, -1, envval, PATH_MAX);
-		if (copied >= PATH_MAX) {
-			_ERR("Data Path is bigger than PATH_MAX");
-		}
+		std::u16string envval = utf8ToUtf16(localDataPath);
 
-		if (!setEnvironmentVariable(u"XDG_DATA_HOME", envval)) {
+		if (!setEnvironmentVariable(u"XDG_DATA_HOME", envval.c_str())) {
 			_ERR("Failed to set XDG_DATA_HOME");
-
 		}
 
 		free(localDataPath);
diff --git a/NativeLauncher/launcher/dotnet/dotnet_launcher.h b/NativeLauncher/launcher/dotnet/dotnet_launcher.h
index a00b32e..62b1859 100644
--- a/NativeLauncher/launcher/dotnet/dotnet_launcher.h
+++ b/NativeLauncher/launcher/dotnet/dotnet_launcher.h
@@ -41,7 +41,6 @@ class CoreRuntime
 		coreclr_shutdown_ptr shutdown;
 		coreclr_create_delegate_ptr createDelegate;
 		set_environment_variable_ptr setEnvironmentVariable;
-		multi_byte_to_wide_char_ptr multiByteToWideChar;
 		std::string __nativeLibDirectory;
 		void* __coreclrLib;
 		void* __hostHandle;
-- 
2.7.4