Crate uesave

A library for reading and writing Unreal Engine save files (commonly referred to as GVAS).

It has been tested on an extensive set of object structures and can fully read and write Deep Rock Galactic save files (and likely a lot more).

There is a small binary utility to quickly convert saves to and from a plain text JSON format which can be used for manual save editing.

Example

use std::fs::File;

use uesave::{Property, Save};

let save = Save::read(&mut File::open("drg-save-test.sav")?)?;
match save.root.properties["NumberOfGamesPlayed"] {
    Property::Int { value, .. } => {
        assert_eq!(2173, value);
    }
    _ => {}
}

Structs

• Box
• Color
• CustomFormatData
• Delegate
• FFormatArgumentData
• FNumberFormattingOptions
• FieldPath
• Header
• IntPoint
• LinearColor
• MapEntry
• MulticastDelegate
• MulticastInlineDelegate
• MulticastSparseDelegate
• Quat
• Root
  Root struct inside a save file which holds both the Unreal Engine class name and list of properties
• Rotator
• Save
• Text
• Types
  Used to disambiguate types within a Property::Set or Property::Map during parsing.
• Vector
• Vector2D

Enums

• Byte
  Just a plain byte, or an enum in which case the variant will be a String
• ByteArray
  Vectorized Byte
• Error
• FFormatArgumentDataValue
• FFormatArgumentValue
• PackageVersion
• Property
  Properties consist of an ID and a value and are present in Root and StructValue::Struct
• PropertyType
• PropertyValue
• StructType
• StructValue
• TextVariant
• ValueArray
  Encapsulates ValueVec with a special handling of structs. See also: ValueSet
• ValueSet
  Encapsulates ValueVec with a special handling of structs. See also: ValueArray
• ValueVec
  Vectorized properties to avoid storing the variant with each value