"prasad rao" <prasadarao...@gmail.com> wrote
I want to convert compiled files to text files.
I believe compiled files are binary files.
If you are talking about compiled executables made from C++ for
example yes. But...
I am able to convert a given string to binary and back to text.
They are not just binary representations of the source code
thay are translations of the C++ instruictions into the native
binary codes of the target computer plus a whole bunch of
housekeeping binary code that sets up the runtime environment.
Decompiling a binary back to source code is incredibly difficult
and even when done right the resulting code is barely recognisable
compared to the original - for example a for loop may come out
as a while loop - especially in C++ - and all variable names may
be totally changed because the bninary doesn't need them (it uses
memory addresses not names)
So if thats what you are aiming for it won;t ever work. And a lot
of software companies will be very happy that it won;t or lots of
people would be stealing their proprietary and copyright code!
But when it comes to a file it is proving to be impossible.
Yes, see above...
def p(a):
s=open(a,'rb')
for x in s:
I doubt this will work for a binary file, you usually have to
use read() and provide a buffer size.
d=map(lambda y:chr(int(y,2)),x)
This is assuming that the binary digits are all stored in
individual lines, which is not the case, they are stored
consecutively with no breaks, thats wgy you need to use
read() and tell it how many bytes you want to read.
What you appear to be doing is the equivalent to
od -a
in Unix - ie dump a file in its ascii representation.
It would be instructive for you to try that command if you have
access to a Unix box... Try it on a text file then try it on an
executable file then try it on a compiled Pyhthon module.
Finally try using the dis module in Python to look at
the disassembled pcode - or just read the documentation
for dis...
p("C:/pp.txt")
OK, Now you appear to be examining a tet file as if it were binary,
thats different again - and slightly more doable.
Could you explain what exacvtly you are trying to do - and why?
Maybe we can help?
--
Alan Gauld
Author of the Learn to Program web site
http://www.alan-g.me.uk/
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