Find Pattern of Bytes in Byte Array

Question

today I am trying to find a pattern of bytes in an array (in this case pointer)

I do know I could use std::string needle() and haystack etc. but I was wondering if I could use that with BYTE (unsigned char)?

I also know the length of the BYTE *_zone so that's not an issue either. Any ways I could go forth to do this? (also any code examples are appreciated :))

Thanks again!

Tuxdude · Accepted Answer · 2013-03-02 22:21:12Z

1

The find() method of std::string is a member function that is intended to find another std::string or a character array char* inside the std::string

So to answer your question if the haystack is a std::string you should be able to pass the char* arrays directly to the find methods.

If the haystack is not a std::string you can make a std::string out of it and then do the same.

answered Mar 2, 2013 at 22:21

Tuxdude

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Thomas · Accepted Answer · 2013-03-02 22:19:17Z

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std::string is actually a typedef for std::basic_string<char>. You can use std::basic_string<BYTE> instead, and most (all?) std::string functionality, in particular .find(), will just work.

answered Mar 2, 2013 at 22:19

Thomas

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us2012 · Accepted Answer · 2013-03-02 22:19:22Z

1

If you don't want to use existing library functions, implement your favorite generic string matching algorithm, for example Knuth-Morris-Pratt, Boyer-Moore or Rabin-Karp.

answered Mar 2, 2013 at 22:19

us2012

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