On Mon, 02 Oct 2006 19:27:40 +0100
Kris Leech <[EMAIL PROTECTED]> wrote:
> Mattias Gaertner wrote:
>
> >On Mon, 02 Oct 2006 11:11:24 +0100
> >Kris Leech <[EMAIL PROTECTED]> wrote:
> >
> >
> >
> >>[EMAIL PROTECTED] wrote:
> >>
> >>
> >>
> >>>I have done something similar in windowze and delphi...
> >>>
> >>>
> >>>
> >>>>which accept a path/filename to use the files in the VFS, for
> >>>>example loading a DLL.
> >>>>
> >>>>
> >>>I have a suggestion, but first I need to know.
> >>>
> >>>How do you regularly access (open, read, write) O.S. files ?
> >>>
> >>>As streams (MyStream.Open, MyStream.Close) ?
> >>>
> >>>As File pointers (FileAssign, Reset, Rewrite) ?
> >>>
> >>>
> >>There is no specific amount of times I use any other of these, it
> >>needs to be kind of generic, like a normal file system. What I'm
> >>trying to do is create something for FPC/Lazarus which is similar to
> >>a SFS (Single File System) so all files are stored as a byte stream
> >>in a single file. But the files can be accessed as normal by
> >>standard pascal calls. I can easily get the files out the single
> >>file as a byte stream but it is then how to use that byte stream
> >>with other functions etc. that do not take TStream as input.
> >>
> >>Any ideas you have or have previously implimented would be great to
> >>hear.
> >>
> >>I know of one option but it is very difficult and that is to write
> >>a driver for Win32 and Linux to allow proper OS access to the SFS...
> >>Then they would work like native files.
> >>
> >>
> >
> >Why not simply use a ramdisk?
> >
> >
> Nice idea but I want everything to be in one file for
> deployment/versioning purposes as well as having the option of using
> encryption. All files put in to the SFS can be encrypted on the fly.
> I would also need to keep a copy of everything on the RAM disk as
> 'real' files anyway incase the server crashed to prevent data loss.
Under linux (and I think MacOSX and BSD too): use a loop device.
Probably windows has something similar. Should the same file work on
different platforms or just the program?
Mattias
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