Box Backup 0.09 with a few tweeks

1 files changed, 97 insertions, 0 deletions

diff --git a/lib/raidfile/RaidFileUtil.h b/lib/raidfile/RaidFileUtil.h
new file mode 100755
index 00000000..16670bf1
--- /dev/null
+++ b/lib/raidfile/RaidFileUtil.h
@@ -0,0 +1,97 @@
+// --------------------------------------------------------------------------
+//
+// File
+//		Name:    RaidFileUtil.h
+//		Purpose: Utilities for the raid file classes
+//		Created: 2003/07/11
+//
+// --------------------------------------------------------------------------
+
+#ifndef RAIDFILEUTIL__H
+#define RAIDFILEUTIL__H
+
+#include "RaidFileController.h"
+#include "RaidFileException.h"
+
+// note: these are hardcoded into the directory searching code
+#define RAIDFILE_EXTENSION			".rf"
+#define RAIDFILE_WRITE_EXTENSION	".rfw"
+
+// --------------------------------------------------------------------------
+//
+// Class
+//		Name:    RaidFileUtil
+//		Purpose: Utility functions for RaidFile classes
+//		Created: 2003/07/11
+//
+// --------------------------------------------------------------------------
+class RaidFileUtil
+{
+public:
+	typedef enum 
+	{
+		NoFile = 0,
+		NonRaid = 1,
+		AsRaid = 2,
+		AsRaidWithMissingReadable = 3,
+		AsRaidWithMissingNotRecoverable = 4
+	} ExistType;
+	
+	typedef enum
+	{
+		Stripe1Exists = 1,
+		Stripe2Exists = 2,
+		ParityExists = 4
+	};
+	
+	static ExistType RaidFileExists(RaidFileDiscSet &rDiscSet, const std::string &rFilename, int *pStartDisc = 0, int *pExisitingFiles = 0, int64_t *pRevisionID = 0);
+	
+	static int64_t DiscUsageInBlocks(int64_t FileSize, const RaidFileDiscSet &rDiscSet);
+	
+	// --------------------------------------------------------------------------
+	//
+	// Function
+	//		Name:    std::string MakeRaidComponentName(RaidFileDiscSet &, const std::string &, int)
+	//		Purpose: Returns the OS filename for a file of part of a disc set
+	//		Created: 2003/07/11
+	//
+	// --------------------------------------------------------------------------	
+	static inline std::string MakeRaidComponentName(RaidFileDiscSet &rDiscSet, const std::string &rFilename, int Disc)
+	{
+		if(Disc < 0 || Disc >= (int)rDiscSet.size())
+		{
+			THROW_EXCEPTION(RaidFileException, NoSuchDiscSet)
+		}
+		std::string r(rDiscSet[Disc]);
+		r += DIRECTORY_SEPARATOR_ASCHAR;
+		r += rFilename;
+		r += RAIDFILE_EXTENSION;
+		return r;
+	}
+	
+	// --------------------------------------------------------------------------
+	//
+	// Function
+	//		Name:    std::string MakeWriteFileName(RaidFileDiscSet &, const std::string &)
+	//		Purpose: Returns the OS filename for the temporary write file
+	//		Created: 2003/07/11
+	//
+	// --------------------------------------------------------------------------	
+	static inline std::string MakeWriteFileName(RaidFileDiscSet &rDiscSet, const std::string &rFilename, int *pOnDiscSet = 0)
+	{
+		int livesOnSet = rDiscSet.GetSetNumForWriteFiles(rFilename);
+		
+		// does the caller want to know which set it's on?
+		if(pOnDiscSet) *pOnDiscSet = livesOnSet;
+		
+		// Make the string
+		std::string r(rDiscSet[livesOnSet]);
+		r += DIRECTORY_SEPARATOR_ASCHAR;
+		r += rFilename;
+		r += RAIDFILE_WRITE_EXTENSION;
+		return r;
+	}
+};
+
+#endif // RAIDFILEUTIL__H
+