update Tar!

libraries/tar/src/lib.rs

@@ -53,3 +53,69 @@ impl From<[char; 512]> for Header {
         }
     }
 }
+
+impl Into<[char; 512]> for Header {
+    fn into(self) -> [char; 512] {
+        let mut header: [char; 512] = ['\0'; 512];
+
+        header[..100].clone_from_slice(&self.filename);
+        header[100..108].clone_from_slice(&self.filemode);
+        header[108..116].clone_from_slice(&self.user_id);
+        header[116..124].clone_from_slice(&self.group_id);
+        header[124..136].clone_from_slice(&self.size);
+        header[136..148].clone_from_slice(&self.modified_time);
+        header[148..156].clone_from_slice(&self.checksum);
+        header[155] = self.typeflag;
+
+        header
+    }
+}
+
+// TODO Write tests for this library
+#[test]
+fn from2tar() {
+    let mut filename = ['\0'; 100];
+    for (i, c) in "file.txt".chars().enumerate() {
+        filename[i] = c;
+    }
+
+    let header = Header {
+        filename,
+        filemode: ['6', '4', '4', ' ', ' ', ' ', ' ', '\0'],
+        user_id: ['0', '0', '0', '0', '0', '0', '0', '0'],
+        group_id: ['0', '0', '0', '0', '0', '0', '0', '0'],
+        size: ['8', '1', '9', '2', ' ', ' ', ' ', ' ', ' ', ' ', ' ', '\0'],
+        modified_time: ['1', '6', '0', '7', '1', '1', '4', '9', '8', '0', ' ', '\0'],
+        checksum: ['0', '0', '0', '0', '0', '0', ' ', '\0'],
+        typeflag: '0',
+    };
+    let array: [char; 512] = header.try_into().unwrap();
+    // assert_eq!(array)
+}
+
+enum Error {
+    InvalidChecksum,
+    InvalidFileData,
+    InvalidTarFormat,
+    InvalidTarHeader,
+    UnsupportedCompression,
+    UnsupportedEncryption,
+    UnsupportedTarFormat,
+}
+
+#[derive(Debug)]
+enum FileType {
+    Directory,
+    Regular,
+    Other(char),
+}
+
+impl From<char> for FileType {
+    fn from(c: char) -> Self {
+        match c {
+            '0' | '\0' => FileType::Regular,
+            '5' => FileType::Directory,
+            _ => FileType::Other(c),
+        }
+    }
+}