From: cat AT animal DOT u-net DOT com
Subject: Re: File splitter or disassemble
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Newsgroups: comp.os.msdos.djgpp
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Date: 29 Sep 2000 13:58:12 GMT
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To: djgpp AT delorie DOT com
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Reply-To: djgpp AT delorie DOT com



       If you want a file splitter running on W95 then consider 
downloading the D-shell from http://www.d4maths.co.uk/iskra.exe.
You can also read how to install the D-shell at 
http://www.d4maths.co.uk/mirage/install.htm

      The D-shell is an implementation of APL with PERL and shell
like features and it includes for the preparation and extraction of
UNIX style tar files amongst other features. There is a script to
split files somewhere as a .d4f file. I certainly used it in the
past to move DJGPP between machines on four floppies.

      There is a function called 

        Z<-BSIZE SPLIT F where BSIZE is a block size (like 1.3Mb)

and F is a file.ext and it creates file_00.ext file_01.ext file_02.ext.
the numbers go up in hex. Download the interpretor, cut the function out
of this message, save it to a file called split.df, the type the command

#copy "split.df"

1200 SPLIT "xxxx.txt"

and you will get about 7 files for 8 Mb.

 
  Z<-NB FSPLIT F;CNT;DIR;DST;FN;SZ;I;J;K;RP;FDIGIT;T
  |Split a file into directory DIR
  NB<-250 #ifndef "NB"    | MAX number of blocks
  FDIGIT<-"123456789ABCDEF"
  FN<-FN_SPLIT F & K<-FNi"." & RP<-I<-0
  ->(0 #ne Z<-F #open 3 1)/XX
  SZ<-#fsize 3 1024
  "size = ",zSZ
  AA: DST<-DIR,((6fK)tFN),"_",FDIGIT[I],KdFN
  ->(0 #ne Z<-DST #open 4 3)/XX
  CNT<-0
  "writing ", DST
  BB: T<-$VA[3 0 1024, RP] & ->(0=rT)/XX
  $VA[4 0,(rT),_1]<-T
  RP++ & CNT++ & ->(CNT < NB)/BB
  Z<-#close 4
  I++ & ->AA
  XX: Z<-#close

   To join the files again you need to construct the DOS copy command
which will be copy f1+f2+f3... dst.

   The D-shell would do this as follows

   DO "cp /b ",( 1 d ,"+",Z[#sort Z<-#files"xxxx_*.txt"])," dst"

   Needless to say splitting files is a trivial job. Instead of 
filling up my disk with RHIDE I simply use functions like MK_MAKE
to create make files and a cloned 'vi' to edit C-sources. The
fake vi in the D-shell can follow links in html files and follow
#include<xyz.h> links in C-source code, not to mention a possibility
of directly editing gzipped files and working transparently on
DOS or UNIX files.

   The fact is that there is already a split utility shipped with
DJGPP. That is about 50k or so. The above script is about 500
bytes. Also the D-shell comes with 'info', 'find', 'awk' and 'grep'
clones. All of these are rambling scripts of a few hundred bytes
or so. 

   And just in case you want to edit files in hebrew or any other
language get the unix keytabs files and the D-shell editor can
read these and set the keyboard right. Linux users can avail
themselves of the termcap/terminfo capeabilities.

                             Tony Goddard
	http://www.d4maths.co.uk