Does anyone know how I can find more bytes after I have found the byte sequence of my variable?
For example: in the file it will look like this: 6261725610
I'll look for this:
byte[] findBytes = { 0x62, 0x61, 0x72 };
and wanted to return this:
byte[] resultado = { 0x62, 0x61, 0x72, 0x56, 0x10 };
Enjoying, how do I subtract the last byte?
for example this:
byte[] findBytes = { 0x62, 0x61, 0x72, 0x56, 0x10 };
Turn this over:
byte[] findBytes = { 0x62, 0x61, 0x72, 0x56, 0x8 };
Try using this library I've developed - Sequences -, makes handling collections much easier. It has an API identical to the Scala collections.
var bytes = new byte[] {0x01, 0x02, 0x03, 0x62, 0x61, 0x72, 0x56, 0x10}.AsSequence();
var find = new byte[] {0x62, 0x61, 0x72};
var index = bytes.IndexOfSlice(find);
var remaining = bytes.Skip(index); //retorna 0x62, 0x61, 0x72, 0x56, 0x10
(I added a few bytes at the beginning of the array to better demonstrate the search by the substring).
AsSequence converts byte[] to ISequence<byte>
IndexOfSlice performs an efficient search by substring using the algorithm KMP
Skip increments the elements that appear before the sub-sequence and returns the remaining elements. To replace the last element:
var replaced = remaining.Init.Append(0x8); // retorna 0x62, 0x61, 0x72, 0x56, 0x8
Init returns the sequence without the last element Append joins an element to the end of the sequence. Links