IEMappedFile is a public domain class. It is designed as a central resource to map files into memory and make sure that only one object corresponds to one filename. It encapsulates the following information:
-the filename (which has been NXUniqueString'ed)
-the open file descriptor
-the pointer to the memory which is mapped to the file
-the size of the file
-the last modify time of the file
The factory object keeps a HashTable of filenames and objects to insure that only one instance is created for a given filename. There are two methods which return the pointer to the memory map. The -data method just returns the pointer. The -dataUpdated method first checks to see if the file has been modified, and if it has it remaps the file and returns the data pointer.
This is a read only object and does not support writing memory to disk, or even writing to memory.
Please send me all bugs found and/or corrected! I have used it but not extensively, specifically the archiving support.
