Initial commit

Cargo.toml

@@ -0,0 +1,12 @@
+[package]
+name = "eq_files"
+version = "0.1.0"
+authors = ["Anarelion <[email protected]>"]
+edition = "2021"
+
+[dependencies]
+bytes = "1.0"
+thiserror = "1.0"
+tracing = "0.1"
+compress = "0.2"
+

src/lib.rs

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+mod pfs;
+mod utils;
+mod wld;
+
+use std::string::FromUtf8Error;
+
+pub use crate::pfs::PackFile;
+pub use crate::wld::WldFile;
+use bytes::Bytes;
+use thiserror::Error;
+
+#[derive(Debug, Error)]
+pub enum EQFilesError {
+    #[error("unknown error")]
+    UnknownError,
+    #[error("invalid magic number {0:x}")]
+    InvalidMagicNumber(u32),
+    #[error("Invalid WLD version: {0:x}")]
+    InvalidVersionNumber(u32),
+    #[error("error decoding string")]
+    ErrorDecodingString(#[from] FromUtf8Error),
+}
+
+pub(crate) trait Decoder {
+    type Settings;
+
+    fn new(input: &mut Bytes, settings: Self::Settings) -> Result<Self, EQFilesError>
+    where
+        Self: Sized;
+}

src/pfs/block.rs

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+use bytes::{Buf, Bytes};
+
+#[derive(Clone, PartialEq)]
+pub struct PackFileBlock {
+    pub compressed_size: u32,
+    pub uncompressed_size: u32,
+    pub data: Bytes,
+}
+
+impl crate::Decoder for PackFileBlock {
+    type Settings = ();
+
+    fn new(input: &mut Bytes, _: Self::Settings) -> Result<Self, crate::EQFilesError>
+    where
+        Self: Sized,
+    {
+        let compressed_size = input.get_u32_le();
+        let uncompressed_size = input.get_u32_le();
+        let data = crate::utils::take(input, compressed_size as usize);
+        Ok(PackFileBlock {
+            compressed_size,
+            uncompressed_size,
+            data,
+        })
+    }
+}