FastD2IReader

FastD2IReader

Having reversed engineered the .d2i files from Dofus for fun, I decided to make a simple reader for them.

This is based on the 2.10 version.

There is now a TypeScript Version available: https://github.com/crimson-med/d2i-reader

How to use

        Dim MyReader As New FastReader( "MyFile.d2i" , True )
        MyReader.GetText( 41903 )
        MyReader.Dispose()

Normal Load VS Fast Load

Normal Load:

Fast Load:

D2I files

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Introduction

The D2I format is a format used by Ankama to store character strings such as item names or dialogs and more. This file varies depending on the language but the structure remains the same.

The Structure

The File

The file is composed of 4 major parts:

• Data
• Indexes
• UI Messages
• extra data

Each of these parts is composed of an Index ( 4 bytes ) giving the size of the data which follows except the extra data.

Data

The data is made up of 3 parts:

• Size of all data ( 4 bytes )
• Size of the character string ( 2 orange bytes )
• The character string in UTF-8 ( X gray bytes )

Indexes

The Indexes since update 2.4X are more complex with the introduction of diacritics (the character string without accents or capital letters).

• Size of all indexes ( 4 bytes )
• channel ID; generally called in d2o ( 4 orange bytes )
• Existing diacritic? ( boolean )( 1 light blue byte )
• Pointer to the string ( 4 brown bytes )
• If diacritic exists Pointer to diacritic string ( 4 bytes navy blue )

UI messages

UI messages are messages which are given in certain packages but which do not allow having an ID (integer which points to the text)

Example: ui.message.check0

Extra data

Not having really had the time to look into it, I don't know its content or its usefulness at the moment.

Plan