Need to scan for a pattern. Function not working...

[maks7567]

Here's what I wrote so far---

fn HowMany(u32 SearchLimit)
{
    u32 Count=0;
    char target[9]={0x69,0x9E,0xBB,0x6B,0x04,0x0D,0xAF,0x6F,0xF9};
    for (u32 i=0, i<SearchLimit, i+=1)
    {
        char buffer[9] = std::mem::read_string(i,9);
        if (buffer==target)
        {
            Count+=1;
        }
    }
    
    return Count;
};

[paxcut]

this line is illegal:

        char buffer[9] = std::mem::read_string(i,9);

that function returns a string (str) type instead, but note that the search values are not valid ascii string chars.

[paxcut]

that's the only correct way of using it. is it not doing what you need?

[maks7567]

Well I mean... I've read the documentation and assumed this---
MagicSearch searches for the given pattern and places the given Data Type (in this case my custom struct "BehaviorData") at the starting of the pattern.
Except, no BehaviorData has been deployed. But I do confirm that the rest of the code runs because there are other structs which I manually placed, and works. So, what do you think?

[paxcut]

If the pattern you chose to place when the magic is found is not placed anywhere that means that the magic sequence was not found. I would recommend trying to use MagicSearch on a simple file with a short sequence. Start with one byte to make sure endianess is not playing a role in the order of the bytes and don't use using , just try to detect some byte from the input file. When you get that to work move on to two bytes. After that it should be clear how to make it work for longer sequences. If you are still having trouble please post a complete pattern and input files so that I can test it here and see why it isn't working. There is always the chance that there is a bug but AFAIK MagicSearch works ok.

[paxcut]

I wrote some sample code to show one way to use magic search. To try it open a new file, resize it to 16 bytes and copy paste the values from the #pragma example into the input file. Copy paste the pattern and run it. It should place two structs called ToPlace in the sequence found and one at the end of the file.

#pragma example 34 35 44 66 56 65 5E 74 E7 66 75 78 56 66 00 00
import std.mem;

str sequence = "\xE7\x66\x75\x78";
struct ToPlace {
    u8 al;
};

std::mem::MagicSearch<sequence,ToPlace> search @0;

[maks7567]

You sir, are a GENIUS!!! it worked!! thanks a lot!