Say that I have a strange character group that I want to find in a binary
file.
I wanted to use something like this:
(define needle (list->string (map integer->char (list #xab #xcd #xef))))
(define needle-offset
(call-with-input-file "big_binary_blob.bin"
#:mode 'binary
(λ (p)
(regexp-match-positions (regexp needle) p))))
The "regexp-match-positions" returns #f (even though I know that needle is
in there, I put it there). Is there a better way to go about this? The
binary blob is about 100 MiB or so, if that helps.
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