[REBOL] BNF grammar of REBOL for code "obfuscator"
From: geza67::freestart::hu at: 17-Dec-2001 16:30
Hello REBOLers,
I would like to write a code "obfuscator" (C-ish intention, isn't it ;-)) ) for
REBOL. Tha main idea behind is to have a custom loader by
'COMPRESSing the program code and 'DECOMPRESS it on load, like this:
- the "packager" REBOL line:
write/binary %someprog.bin compress read %someprog.r
- the shell loader (WinDOS .BAT file):
rebol.exe -s --noinstall --do "do decompress read/binary %%someprog.bin quit"
To get the unnecessary overhead data out of the script I would like to
- strip the header to the simplest "REBOL []" form
- extinct one-line and block comments
- reduce tabulation and blank lines to single whitespace
My first approach to detect the end of the REBOL header did not work:
I just cannot keep track of the nested block levels in parse rules :-(
I also stucked at detecting comment boundaries
- to detect one-line comments whether they are _real_ comments
or just ";" characters buried within a string (both "" and {} delimited)
- detect 'COMMENT blocks (reprise of the previously mentioned
detection problem for nested blocks)
Do you have an exact BNF notation (or directly 'PARSE rules) of the
REBOL language ? I searched the library but even %color-code.r is very
spartanian and does not destructure a REBOL script this way (although
its syntax coloring purpose might have suggested so).
Thanx for your commitment of ideas!
--
Best regards,
Geza Lakner MD mailto:[geza67--freestart--hu]
