code cleanup

Cargo.toml

@@ -11,7 +11,6 @@ edition = "2021"
 [dependencies]
 byteorder = "*"
 strum = { version = "*", features = ["derive"] }
-hashbrown = "*"
 thiserror = "*"
 
 [profile.release]

examples/read.rs

@@ -8,7 +8,5 @@ fn main() -> Result<(), un_pak::Error> {
             Err(e) => println!("{e}"),
         }
     }
-    Err(un_pak::Error::PakInvalid(
-        "no version can parse".to_string(),
-    ))
+    Err(un_pak::Error::Other("no version can parse".to_string()))
 }

src/error.rs

@@ -1,13 +1,17 @@
 #[derive(thiserror::Error, Debug)]
 pub enum Error {
-    #[error("error parsing pak: {0}")]
-    PakInvalid(String),
+    #[error("expected magic of {} but found {0}", super::MAGIC)]
+    MagicMismatch(u32),
+    #[error("parsed with {0} but pak was {0}")]
+    VersionMismatch(super::Version, super::Version),
     #[error("error reading file: {0}")]
     IoError(#[from] std::io::Error),
-    #[error("error converting to enum: {0}")]
+    #[error("error converting enum: {0}")]
     StrumError(#[from] strum::ParseError),
     #[error("error converting to utf8: {0}")]
     Utf8Error(#[from] std::string::FromUtf8Error),
     #[error("error converting to utf16: {0}")]
     Utf16Error(#[from] std::string::FromUtf16Error),
+    #[error("{0}")]
+    Other(String),
 }

src/footer.rs

@@ -52,17 +52,10 @@ impl Footer {
             }),
         };
         if super::MAGIC != footer.magic {
-            return Err(super::Error::PakInvalid(format!(
-                "incorrect magic - expected {} but got {}",
-                super::MAGIC,
-                footer.magic
-            )));
+            return Err(super::Error::MagicMismatch(footer.magic));
         }
         if version != &footer.version {
-            return Err(super::Error::PakInvalid(format!(
-                "incorrect version - parsed with {} but is {}",
-                version, footer.version
-            )));
+            return Err(super::Error::VersionMismatch(*version, footer.version));
         }
         Ok(footer)
     }

src/lib.rs

@@ -13,8 +13,8 @@ pub const MAGIC: u32 = 0x5A6F12E1;
 #[repr(u32)]
 #[derive(
     Default,
-    Copy,
     Clone,
+    Copy,
     PartialEq,
     Eq,
     PartialOrd,
@@ -38,14 +38,14 @@ pub enum Version {
     PathHashIndex, // more compression methods
 }
 
-// strum shouldn't need to be installed
+// strum shouldn't need to be installed by users
 impl Version {
     pub fn iter() -> VersionIter {
         <Version as strum::IntoEnumIterator>::iter()
     }
 }
 
-#[derive(Default, Copy, Clone, PartialEq, Eq, Debug, strum::Display, strum::EnumString)]
+#[derive(Default, Clone, Copy, PartialEq, Eq, Debug, strum::Display, strum::EnumString)]
 pub enum Compression {
     #[default]
     None,

src/pak.rs

@@ -5,7 +5,7 @@ use super::Version;
 pub struct Pak {
     pub version: Version,
     pub footer: super::Footer,
-    pub entries: hashbrown::HashMap<String, super::Entry>,
+    pub index: super::Index,
 }
 
 impl Pak {
@@ -17,10 +17,11 @@ impl Pak {
         // parse footer info to get index offset
         let footer = super::Footer::new(&mut reader, &version)?;
         reader.seek(io::SeekFrom::Start(footer.offset))?;
+        let index = super::Index::new(&mut reader, &version)?;
         Ok(Self {
             version,
             footer,
-            entries: hashbrown::HashMap::new(),
+            index,
         })
     }
 }