modified: src/main.rs

src/main.rs

@@ -245,6 +245,7 @@ pub fn parse_bytes(data: &[u8]) -> XDatabase {
                         let db: Database = bincode::deserialize(&data[i..i+u]).unwrap();
                         info!("val: {:?}", db);
                         xdb.data = Some(db);
+                        xdb.header = Some(header);
                     },
                     ChunkType::DataSet => {
                         u = usize::try_from(header.end_of_chunk).unwrap() - 12;
@@ -407,6 +408,15 @@ fn generate_header(ct: ChunkType, header_size: usize, data_len: usize) -> Vec<u8
     let header = ChunkHeader{ chunk_type: ct.into(), end_of_chunk: header_size, children_count: header_size + data_len as u32};
     bincode::serialize(&header).unwrap()
 }
+
+fn generate_zeroes(cnt: u32) -> Vec<u8> {
+    let mut v: Vec<u8> = Vec::new();
+    for i in 0..cnt-12 {
+        v.push(0x00);
+    }
+    v
+}
+
 /*
 [lib]
 crate-type = ["staticlib", "cdylib", "lib"]
@@ -469,8 +479,9 @@ fn to_bytes(xdb: XDatabase) -> Vec<u8> {
     }
     let sdb = bincode::serialize(&xdb.data.unwrap()).unwrap();
     let sdb_len = sdb.len();
-    bytes = [sdb, bytes].concat();
-    bytes = [generate_header(ChunkType::Database, sdb_len, bytes.len()), bytes].concat();
+    let h = xdb.header.unwrap();
+    bytes = [sdb, generate_zeroes(h.end_of_chunk - sdb_len as u32), bytes].concat();
+    bytes = [generate_header(ChunkType::Database, (h.end_of_chunk - 12) as usize, bytes.len()), bytes].concat();
     bytes
 }
 
@@ -481,14 +492,14 @@ fn main() {
         .filter(None, LevelFilter::Info)
         .init();
 
-    let mut f = File::open("D:\\Documents\\iTunes\\iTunesDB").unwrap(); // D:\\Documents\\iTunes\\iTunesDB
+    let mut f = File::open("outdb").unwrap(); // D:\\Documents\\iTunes\\iTunesDB
     let mut buf = Vec::new();
     match f.read_to_end(&mut buf) {
         Ok(n) => {
             let data = &buf[..n];
             let xdb = parse_bytes(data);
-            let mut op = File::create("outdb").unwrap();
-            info!("Write res: {:?}", op.write(&to_bytes(xdb)));
+            //let mut op = File::create("outdb").unwrap();
+            //info!("Write res: {:?}", op.write(&to_bytes(xdb)));
         },
         Err(e) => {
             error!("Error: {}",e);