added header to make os detection at one point

added ifdefs to implement file mapping for windows
implemented file mapping for windows, but did not compile yet (no windows available...)

src/parser/parser.h

@@ -7,8 +7,14 @@
 
 #pragma once
 
+#include "src/utility/osDetection.h"
+
+#if defined LINUX || defined MACOSX
+	#include <sys/mman.h>
+#elif defined WINDOWS
+#endif
+
 #include <sys/stat.h>
-#include <sys/mman.h>
 #include <fcntl.h>
 #include <errno.h>
 
@@ -29,18 +35,31 @@ namespace parser {
 	 *	most probably much more efficient than doing this manually.
 	 */
 
+#if !defined LINUX && !defined MACOSX && !defined WINDOWS
+	#error Platform not supported
+#endif
+	 
 	class MappedFile
 	{
 		private:
 			/*!
 			 *	@brief file descriptor obtained by open().
 			 */
+#if defined LINUX || defined MACOSX
 			int file;
+#elif defined WINDOWS
+			HFILE file;
+			HANDLE mapping;
+#endif
 			
 			/*!
 			 *	@brief stat information about the file.
 			 */
-			struct stat st;
+#if defined LINUX || defined MACOSX
+			struct stat64 st;
+#elif defined WINDOWS
+			struct __stat64 st;
+#endif
 			
 		public:
 			/*!
@@ -58,7 +77,12 @@ namespace parser {
 		 */
 		MappedFile(const char* filename)
 		{
-			if (stat(filename, &(this->st)) != 0)
+#if defined LINUX || defined MACOSX
+			/*
+			 *	Do file mapping for reasonable systems.
+			 *	stat64(), open(), mmap()
+			 */
+			if (stat64(filename, &(this->st)) != 0)
 			{
 				pantheios::log_ERROR("Could not stat ", filename, ". Does it exist? Is it readable?");
 				throw exceptions::file_IO_exception("mrmc::parser::MappedFile Error in stat()");
@@ -78,6 +102,42 @@ namespace parser {
 				pantheios::log_ERROR("Could not mmap ", filename, ".");
 				throw exceptions::file_IO_exception("mrmc::parser::MappedFile Error in mmap()");
 			}
+#elif defined WINDOWS
+#warning Windows support is implemented but has not been compiled yet...
+			/*
+			 *	Do file mapping for windows.
+			 *	_stat64(), CreateFile(), CreateFileMapping(), MapViewOfFile()
+			 */
+			if (_stat64(filename, &(this->st)) != 0)
+			{
+				pantheios::log_ERROR("Could not stat ", filename, ". Does it exist? Is it readable?");
+				throw exceptions::file_IO_exception("mrmc::parser::MappedFile Error in stat()");
+			}
+			
+			this->file = CreateFile(filename, GENERIC_READ, 0, NULL, OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
+			if (this->file == INVALID_HANDLE_VALUE)
+			{
+				pantheios::log_ERROR("Could not open ", filename, ". Does it exist? Is it readable?");
+				throw exceptions::file_IO_exception("mrmc::parser::MappedFile Error in CreateFile()");
+			}
+			
+			this->mapping = CreateFileMapping(this->file, NULL, PAGE_READONLY, (DWORD)(st.st_size >> 32), (DWORD)st.st_size, NULL);
+			if (this->mapping == NULL)
+			{
+				CloseHandle(this->file);
+				pantheios::log_ERROR("Could not create file mapping for ", filename, ".");
+				throw exceptions::file_IO_exception("mrmc::parser::MappedFile Error in CreateFileMapping()");
+			}
+			
+			this->data = MapViewOfFile(this->mapping, FILE_MAP_READ, 0, 0, st.st_size);
+			if (this->data == NULL)
+			{
+				CloseHandle(this->mapping);
+				CloseHandle(this->file);
+				pantheios::log_ERROR("Could not create file map view for ", filename, ".");
+				throw exceptions::file_IO_exception("mrmc::parser::MappedFile Error in MapViewOfFile()");
+			}
+#endif
 		}
 		
 		/*!
@@ -87,8 +147,13 @@ namespace parser {
 		 */
 		~MappedFile()
 		{
+#if defined LINUX || defined MACOSX
 			munmap(this->data, this->st.st_size);
 			close(this->file);
+#elif defined WINDOWS
+			CloseHandle(this->mapping);
+			CloseHandle(this->file);
+#endif
 		}
 	};
 

src/utility/osDetection.h

@@ -0,0 +1,11 @@
+#pragma once
+
+#if defined __linux__ || defined __linux
+	#define LINUX
+#elif defined TARGET_OS_MAC || defined __apple__
+	#define MACOSX
+#elif defined _WIN32 || defined _WIN64
+	#define WINDOWS
+#else
+	#error Could not detect Operating System
+#endif