Find Sequence with "gaps" using regular expressions

Question

Hey mates! How're you doing?

I need your help to find an expression in a binary file.

The trick is that the expression (bits) I want to find inside the bigger expression (also in bits) has control bits ans rubish bits that I don't need.

Imagine this simple example with chars:

find "ABC" in this sequence "TEDADBRGTC"

So, back to bits:

I now that the gaps (control an trash bits) can be 0 up to 4 bits.

I know that the bits I want to find are sequencially space

Thanks

Answer 1

Hi Vasco,

Here is the RegEx for your example (assuming any character gaps up to 4): (A).{0,3}(B).{0,3}(C)

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Nuno Gomes http://nunogomes.net

Answer 2

Hey Nuno!

Thanks :)

Answer 3

Vasco, the solution presented by Nuno, works?

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Olavo Oliveira Neto
http://olavooneto.wordpress.com
Twitter @Olavooneto
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