Bitwise Operators

Scripting Forums AppleScript | Mac OS X
#1

I am new to AppleScript and am trying to determine if it will work for a quick little communications project where I need to calculate CRC’s to verify data integrity. Can I do binary arithmetic in AppleScript?

#2

You can use “do shell script” and lots of available built-in crc tools. Eg:

set i to quoted form of POSIX path of alias "path:to:file.txt"

---> CRC32
do shell script "printf "%08X" `cksum -o3 " & i & " | awk '{ print $1 }'`"

--> MD5
do shell script "openssl md5 < " & i

--> MD4
do shell script "openssl md4 < " & i

--> MD2
do shell script "openssl md2 < " & i

--> RMD160
do shell script "openssl rmd160 < " & i

--> SHA
do shell script "openssl sha < " & i

--> SHA1
do shell script "openssl sha1 < " & i

For the MD4-Mlnet calculation, you need “ed2k_hash” (search Google).
For SHA2, you can use the command-line tool of the same name by Aaron Gifford, here:
http://www.adg.us/computers/sha.html

Anyway, answering your question, there is not bitwise nor any kind of binary operators in AppleScript. You should implement your own solutions as handlers (as, eg, though not example of bitwise):
http://www.macscripter.net/exchange/comments.php?id=310_0_1_0_C
http://www.macscripter.net/exchange/comments.php?id=308_0_1_0_C