Re: write binary file with struct in tcl


Read the man page for binary format. Its very similar to the binary scan
options, after you have the entry in a variable you can use puts to
write it to a file (which should be configured as binary as for reading).

Michael

This what I did by use binary format

set fp [open ./add.dat w]
set outBin [binary format Ia5xxxa80xxx 1 cmd passwd]
fconfigure $fp -translation binary
puts -nonewline $fp $outBin
close $fp

what I get in add.dat is :

^@^@^@^Acmd^@^@^@^@^@command^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@

but for chkr2k3.dat which create by C it show:

^A^@^@^@cmd^@:command^@^D~B^D^H^D~B^D^H
~G^D^H^T~^^D^H@~]^D^Hl๘ฟฟ๖ท^DH^D^@^@^@^@r^EH๔๗ฟฟ�~G^D^H^T~^^D^H@~]^D^Hl๘ฟฟ^@r^EH^ZN^MH^P~L^D^H^X๘ฟฟต~D^D^H^A^@^@^@

The purpose of my program is I would like to get the value from
interface to write in binary file by Tcl programming and then read
that binary file use C programming so I try to see how write binay file
in the same format in C struct which I use

However, Thank you so much for all of your suggestion

.

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