Initial Commit

common/FILEMAP.CPP

@@ -0,0 +1,64 @@
+#if defined(__FLAT__)
+#include <common/filemap.hpp>
+#include <common/openfile.hpp>
+
+FileMap::FileMap(void)
+: mMaxExtentHigh(0L), mMaxExtentLow(0L),
+	mPaging(ReadOnly), mProtection(Image), mhFileHandle(0)
+{
+}
+
+FileMap::FileMap(const FileMap &/*someFileMap*/)
+: mMaxExtentHigh(0L), mMaxExtentLow(0L),
+	mPaging(ReadOnly), mProtection(Image), mhFileHandle(0)
+{
+}
+
+FileMap::FileMap(String mapName,DWORD maxExtentHigh,DWORD maxExtentLow,Paging paging,Protection protection)
+:	mMaxExtentHigh(maxExtentHigh), mMaxExtentLow(maxExtentLow), mPaging(paging),
+	mProtection(protection), mhFileHandle(0)
+{
+  create(mapName,maxExtentHigh,maxExtentLow,paging,protection);
+}
+
+FileMap::FileMap(const FileHandle &someFileHandle)
+:	mMaxExtentHigh(0L), mMaxExtentLow(0), mhFileHandle(0)
+{
+  maxExtentHigh(0L);  
+  maxExtentLow(someFileHandle.size());  
+  create(someFileHandle);
+}
+
+WORD FileMap::create(const FileHandle &someFileHandle)
+{
+	if(FileHandle::Read==someFileHandle.access())mPaging=ReadOnly;
+	else if(FileHandle::Write==someFileHandle.access())mPaging=WriteCopy;
+	else if(FileHandle::ReadWrite==someFileHandle.access())mPaging=ReadWrite;
+	else mPaging=ReadOnly;
+	mProtection=Commit;
+	return create(String(""),0L,someFileHandle.size(),mPaging,mProtection,(HANDLE)someFileHandle);
+}
+
+WORD FileMap::create(String mapName,DWORD maxExtentHigh,DWORD maxExtentLow,Paging paging,Protection protection,HANDLE hMapFile)
+{
+	mMaxExtentHigh=maxExtentHigh;
+	mMaxExtentLow=maxExtentLow;
+	mPaging=paging;
+	mProtection=protection;
+	destroyMap();
+	mhFileHandle=::CreateFileMapping((HANDLE)hMapFile,(LPSECURITY_ATTRIBUTES)0,paging|protection,maxExtentHigh,maxExtentLow,mapName);
+  return isOkay();
+}
+
+BOOL FileMap::open(const String &strName,DWORD maxExtentHigh,DWORD maxExtentLow,Paging paging,Protection protection,DWORD access,BOOL inherit)
+{
+  destroyMap();
+	if(strName.isNull())return FALSE;
+  mhFileHandle=::OpenFileMapping(access,inherit,(LPSTR)(String&)strName);
+	mMaxExtentHigh=maxExtentHigh;
+	mMaxExtentLow=maxExtentLow;
+	mPaging=paging;
+	mProtection=protection;
+	return isOkay();
+}
+#endif