Scripts for reading and writing binary files

[Alejandro Tejada]

Hi all,

Recently, I had to test and modify some binary files,
so digging in my own stacks,  I found these scripts:

[WARNING: The script on step 3, OVERWRITE the
original file. If you do not want this, simply
change the path and/or name of the file]

1) create a field to hold the converted
binary to hexadecimal data.
Set the name of this field to: "tHex"

2) Create a button named "Import" to hold
the following script:
----------------------------------------------------
global tFile

on mouseUp
  answer file "select"
  if it is not empty then
    put "binfile:"&it into tFile
      put url tFile into tData
      -- convert binary data to Hexadecimal
      repeat for each char n in tData
        put chartonum(n) into nft
        put baseconvert(nft,10,16) into kjh
        if the number of chars of kjh < 2 then put "0" before kjh
        put kjh & space after cdf
      end repeat
      put cdf into fld "tHex"
end mouseUp
-----------------------------------------------------
Now, you have the field "tHex" with Hexadecimal numbers,
like these:

46 57 53 03 4F 00 00 00 78 00 05 5F 00 00 0F A0
00 00 0C 01 00 43 02 FF FF FF BF 00 23 00 00 00
01 00 70 FB 49 97 0D 0C 7D 50 00 01 14 00 00 00
00 01 25 C9 92 0D 21 ED 48 87 65 30 3B 6D E1 D8
B4 00 00 86 06 06 01 00 01 00 00 40 00 00 00

After you make all the modifications to
the file (using hexadecimal), save it
back as a binary file:

3) Create a button named "Export"
and paste this script:

------------------------------------------------------
global tFile

on mouseUp
put fld "tHex" into tData

repeat for each word n in tData
put numtochar(baseconvert(n,16,10)) after tBinary
end repeat

put tBinary into url tFile
end mouseUp
------------------------------------------------------

Thanks in advance for your
opinions and comments!

Al

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