Conversion from 010 BT?

[kelmer44]

I was a user of 010 but Im finding ImHex a lot nicer, the only issue i have is i have lots of .BT template files from 010 and it would be nice to be able to convert them to ImHex's language.

I also struggle a bit with the pattern language in general, like how do you translate:

typedef struct {
    WORD width;
    WORD height;
    byte bitmap[frameSize-4];
} SequenceItem;

WORD frameSize;

while(!FEof()){  
    SequenceItem frame;
}

into the Imhex equivalent?

[WerWolv]

Hey! You're probably looking for something like this:

import std.mem;

struct SequenceItem {
    s32 width;
    s32 height;
    u8 bitmap[parent.frameSize - 4];
};

struct MyFormat {
    s32 frameSize;
    SequenceItem frames[while(!std::mem::eof())];
};

MyFormat myFormat @ 0x00;

[kelmer44]

Thanks!

does this mean:

MyFormat myFormat @ 0x00;
"until the end of file"?

[WerWolv]

No, the while(!std::mem::eof()) means "keep that array growing until it reaches the end of the file". MyFormat myFormat @ 0x00; is the entry point basically. "Create a new MyFormat pattern and place it at address 0x00 in the data"

[kelmer44]

gotcha! thanks

[paxcut]

I have done lots of conversions from bts because until a year or two ago I was like you so I translated all my templates and also translated other ones I found I needed. Some are pretty easy, some can be hard. others may not be possible without adding some functionality to imhex like importing dlls. The stuff that is harder are the loops that make arrays. they can be a pain to trace and see what patterns it is creating when they are nested.

[kelmer44]

Can you actually do multi-dimensional arrays?

[WerWolv]

There's explicitly no multi-dimensional arrays, no. If you need them, define a struct that contains an array and then create an array out of that struct.

The easiest way is char myString[];. If you don't provide a size for the array, it will automatically grow until it hits a null-element. You can also do the following if you like to be more explicit:

import std.string;

std::string::NullString myString @ 0x00;

[paxcut]

Can you actually do multi-dimensional arrays?

Easily.

struct Array<T,auto N> {
    T data[N];
};

Array<Array<u8,3>,4> array;

How do you read a string that is "terminated by the \0" character? As in, no predefined size.

struct test {
char str[];
};