Add basic data structures to represent Tar archives

Cargo.lock

@@ -202,6 +202,7 @@ dependencies = [
  "ron",
  "serde",
  "sha2",
+ "tar",
  "walkdir",
 ]
 
@@ -393,6 +394,10 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "tar"
+version = "0.1.0"
+
 [[package]]
 name = "termcolor"
 version = "1.2.0"

Cargo.toml

@@ -5,11 +5,15 @@ edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
+[workspace]
+members = [ "tar" ]
+
 [dependencies]
 clap = "4.1"
 rayon = "1.7"
 ron = "0.8"
 sha2 = "0.10"
+tar = { path = "tar" }
 walkdir = "2.3"
 
 [dependencies.serde]

tar/Cargo.toml

@@ -0,0 +1,5 @@
+[package]
+name = "tar"
+version = "0.1.0"
+edition = "2021"
+

tar/src/header.rs

@@ -0,0 +1,21 @@
+#[derive(Clone, Copy, Debug, PartialEq)]
+pub struct Header {
+    pub fname: [u8; 100],
+    pub mode: [u8; 8],
+    pub uid: [u8; 8],
+    pub gid: [u8; 8],
+    pub size: [u8; 12],
+    pub mtime: [u8; 12],
+    pub header_checksum: [u8; 8],
+    pub link_indicator: [u8; 1],
+    pub link_name: [u8; 100],
+    pub ustar_magic: [u8; 6],
+    pub ustar_version: [u8; 2],
+    pub username: [u8; 32],
+    pub groupname: [u8; 32],
+    pub device_major: [u8; 8],
+    pub device_minor: [u8; 8],
+    pub file_prefix: [u8; 155],
+    pub reserved: [u8; 12],
+}
+

tar/src/lib.rs

@@ -0,0 +1,7 @@
+mod header;
+mod node;
+pub use {header::Header, node::Node};
+
+pub struct Archive {
+    pub nodes: Vec<Node>,
+}

tar/src/node.rs

@@ -0,0 +1,6 @@
+use crate::Header;
+
+pub struct Node {
+    pub header: Header,
+    pub data: Vec<[u8; 512]>,
+}