From ed706c5b30a5dc15afbbd6aa0662084dff1bb661 Mon Sep 17 00:00:00 2001
From: Aras Pranckevicius <aras@unity3d.com>
Date: Wed, 24 Feb 2010 18:40:48 +0200
Subject: [PATCH] preprocessor open impl on MSVC

---
 mojoshader_preprocessor.c | 36 +++++++++++++++++++++++++++++++++++-
 1 file changed, 35 insertions(+), 1 deletion(-)

diff --git a/mojoshader_preprocessor.c b/mojoshader_preprocessor.c
index 4b51a01d..a1e4e676 100644
--- a/mojoshader_preprocessor.c
+++ b/mojoshader_preprocessor.c
@@ -203,7 +203,41 @@ int MOJOSHADER_internal_include_open(MOJOSHADER_includeType inctype,
                                      void *d)
 {
 #ifdef _MSC_VER
-#error Write me.
+	WCHAR widePath[MAX_PATH];
+	if (!MultiByteToWideChar( CP_UTF8, 0, fname, -1, widePath, MAX_PATH ))
+		return 0;
+	HANDLE fileHandle = CreateFileW (widePath, FILE_GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, NULL, OPEN_EXISTING, NULL, NULL );
+	if (fileHandle == INVALID_HANDLE_VALUE)
+		return 0;
+	DWORD fileSize = GetFileSize (fileHandle, NULL);
+	if (fileSize == INVALID_FILE_SIZE)
+	{
+		CloseHandle (fileHandle);
+		return 0;
+	}
+	char *data = (char *) m(fileSize, d);
+	if (data == NULL)
+	{
+		CloseHandle (fileHandle);
+		return 0;
+	}
+	DWORD readLength = 0;
+	if (!ReadFile( fileHandle, data, fileSize, &readLength, NULL))
+	{
+		CloseHandle (fileHandle);
+		f(data, d);
+		return 0;
+	}
+	CloseHandle (fileHandle);
+	if (readLength != fileSize)
+	{
+		f(data, d);
+		return 0;
+	}
+	*outdata = data;
+	*outbytes = fileSize;
+	return 1;
+	
 #else
     struct stat statbuf;
     if (stat(fname, &statbuf) == -1)