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Article #12076Re: Bakup/Restore My own API, how to...
From: Johnnie
Date: Mon, 25 Nov 2002 12:03
Date: Mon, 25 Nov 2002 12:03
46 lines
2820 bytes
2820 bytes
> E-mail it direct. Done you must have in a couple of minutes. >I've started on a new routine, which writes the header > and file records, which have had an update all Array of Chars are now > LPWSTR. Since this is a dynamic string variable it is not recommended to be used in a static Record and we need the record to be static in size so it will easier to handle. Take a look on the example I have send you via email. >The Files are loaded into a TMemoryStream, compressed and then > written in teh TFileStream. > But the FileStream only writes 4 Characters. If using the > TMemoryStream.SaveToFile routine then the file is written correctly!! > > > Any Ideas? > How do you write it to the file?? I personaly use the TfileStream.CopyFrom(Tmemorystream,0); which copys the entire TMemoryStream to the current TfileStream position. You will find an example on the demo I've send you. If you do have any questions do not hesitate to ask me. Please keep in mind that the demo is not complete although it does creates a list of files in a single file it lacks the following abilities 1) I do not seperate the compressed data from each other with a start/end tag (required if you want to be able to extract uncorrupted files from a corrupted backup file easelly). 2) No compression method has been used just a copy of the existing files in a single file. 3) I have removed the fullfilename field as it is not needed it can be reconstructed by the FileDir+Filename fields. Regards johnnie.
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: f94dd,d8e24b1ddb3db1be X-Google-Attributes: gidf94dd,public X-Google-ArrivalTime: 2002-11-25 04:15:41 PST Newsgroups: borland.public.delphi.nativeapi Subject: Re: Bakup/Restore My own API, how to... From: Johnnie <None@Noware.non> References: <3dd9162d@newsgroups.borland.com> <3dd94734$1@newsgroups.borland.com> <3dd9f0c3@newsgroups.borland.com> <3dda9fb3@newsgroups.borland.com> <3ddb406c@newsgroups.borland.com> <3ddbb190$1@newsgroups.borland.com> <3ddbb904@newsgroups.borland.com> <3ddca378$1@newsgroups.borland.com> <3ddcbf0c$1@newsgroups.borland.com> <3dddfba2@newsgroups.borland.com> <3dddfd4b@newsgroups.borland.com> <3de1f409@newsgroups.borland.com> <3de20c6e$1@newsgroups.borland.com> User-Agent: Xnews/L5 NNTP-Posting-Host: 195.167.69.130 Message-ID: <3de2117a$1@newsgroups.borland.com> Date: 25 Nov 2002 04:03:06 -0800 X-Trace: newsgroups.borland.com 1038225786 195.167.69.130 (25 Nov 2002 04:03:06 -0800) Lines: 47 Path: arc1-ca.pugleaf.net!archiver1.google.com!news1.google.com!sn-xit-02!sn-xit-05!sn-xit-01!sn-xit-08!supernews.com!nntp2.aus1.giganews.com!border1.nntp.aus1.giganews.com!nntp.giganews.com!newsfeed1.cidera.com!Cidera!news.uni-x.net!newsgroups.borland.com!not-for-mail