mojang就是有毛病

Cargo.toml

@@ -6,3 +6,7 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
+
+[features]
+default = []
+debug = []

src/data.rs

@@ -9,7 +9,7 @@ pub type NbtLength = i32;
 
 /// NBT 里的字符串独树一帜的把自己的长度用一个u32表示
 /// 不如说为啥别的不用 u32 呢
-pub type StringLength = u32;
+pub type StringLength = u16;
 
 /// Reader
 pub type Reader<'a> = Cursor<&'a [u8]>;
@@ -112,7 +112,9 @@ impl From<Vec<NbtItem>> for NbtList {
 
 impl From<HashMap<Arc<str>, NbtItem>> for NbtList {
     #[inline]
-    fn from(value: HashMap<Arc<str>, NbtItem>) -> Self { Self::Compound(Rc::new(RefCell::new(value))) }
+    fn from(value: HashMap<Arc<str>, NbtItem>) -> Self {
+        Self::Compound(Rc::new(RefCell::new(value)))
+    }
 }
 
 impl From<Vec<bool>> for NbtList {
@@ -194,13 +196,16 @@ impl NbtValue {
 
     /// 直接读取
     pub fn from_string(value: &mut Reader) -> Self {
-        let len: StringLength = Self::from_i32(value).as_i32().unwrap() as StringLength;
+        let len: StringLength = Self::from_i16(value).as_i16().unwrap() as StringLength;
         if len == 0 {
             return Self::String(Arc::from(""));
         }
         let mut buff = vec![0_u8; len as usize];
         _ = value.read(&mut buff).unwrap();
-        Self::String(Arc::from(String::from_utf8(buff).unwrap()))
+        let str = Arc::from(String::from_utf8(buff).unwrap());
+        #[cfg(feature = "debug")]
+        println!("-----string len: {} value: |{}|", len, str);
+        Self::String(str)
     }
 
     /// 读取一个有类型无名称的值 (List)

src/main.rs

@@ -1,9 +1,127 @@
+#![feature(buf_read_has_data_left)]
+
 mod data;
 mod read;
 
 fn main() {
     println!("Hello, world!");
+    big_read_test();
 }
 
 // bincode-org/bincode: A binary encoder / decoder implementation in Rust.
 // https://github.com/bincode-org/bincode
+
+fn big_read_test() {
+    let data: [u8; 0x21] = [
+        0x0A, 0x00, 0x0B, 0x68, 0x65, 0x6C, 0x6C, 0x6F, 0x20, 0x77, 0x6F, 0x72, 0x6C, 0x64, 0x08, 0x00,
+        0x04, 0x6E, 0x61, 0x6D, 0x65, 0x00, 0x09, 0x42, 0x61, 0x6E, 0x61, 0x6E, 0x72, 0x61, 0x6D, 0x61,
+        0x00 ];
+    read_test(&data);
+
+    let data: [u8; 0x608] = [
+    0x0A, 0x00, 0x05, 0x4C, 0x65, 0x76, 0x65, 0x6C, 0x04, 0x00, 0x08, 0x6C, 0x6F, 0x6E, 0x67, 0x54,
+    0x65, 0x73, 0x74, 0x7F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x02, 0x00, 0x09, 0x73, 0x68,
+    0x6F, 0x72, 0x74, 0x54, 0x65, 0x73, 0x74, 0x7F, 0xFF, 0x08, 0x00, 0x0A, 0x73, 0x74, 0x72, 0x69,
+    0x6E, 0x67, 0x54, 0x65, 0x73, 0x74, 0x00, 0x29, 0x48, 0x45, 0x4C, 0x4C, 0x4F, 0x20, 0x57, 0x4F,
+    0x52, 0x4C, 0x44, 0x20, 0x54, 0x48, 0x49, 0x53, 0x20, 0x49, 0x53, 0x20, 0x41, 0x20, 0x54, 0x45,
+    0x53, 0x54, 0x20, 0x53, 0x54, 0x52, 0x49, 0x4E, 0x47, 0x20, 0xC3, 0x85, 0xC3, 0x84, 0xC3, 0x96,
+    0x21, 0x05, 0x00, 0x09, 0x66, 0x6C, 0x6F, 0x61, 0x74, 0x54, 0x65, 0x73, 0x74, 0x3E, 0xFF, 0x18,
+    0x32, 0x03, 0x00, 0x07, 0x69, 0x6E, 0x74, 0x54, 0x65, 0x73, 0x74, 0x7F, 0xFF, 0xFF, 0xFF, 0x0A,
+    0x00, 0x14, 0x6E, 0x65, 0x73, 0x74, 0x65, 0x64, 0x20, 0x63, 0x6F, 0x6D, 0x70, 0x6F, 0x75, 0x6E,
+    0x64, 0x20, 0x74, 0x65, 0x73, 0x74, 0x0A, 0x00, 0x03, 0x68, 0x61, 0x6D, 0x08, 0x00, 0x04, 0x6E,
+    0x61, 0x6D, 0x65, 0x00, 0x06, 0x48, 0x61, 0x6D, 0x70, 0x75, 0x73, 0x05, 0x00, 0x05, 0x76, 0x61,
+    0x6C, 0x75, 0x65, 0x3F, 0x40, 0x00, 0x00, 0x00, 0x0A, 0x00, 0x03, 0x65, 0x67, 0x67, 0x08, 0x00,
+    0x04, 0x6E, 0x61, 0x6D, 0x65, 0x00, 0x07, 0x45, 0x67, 0x67, 0x62, 0x65, 0x72, 0x74, 0x05, 0x00,
+    0x05, 0x76, 0x61, 0x6C, 0x75, 0x65, 0x3F, 0x00, 0x00, 0x00, 0x00, 0x00, 0x09, 0x00, 0x0F, 0x6C,
+    0x69, 0x73, 0x74, 0x54, 0x65, 0x73, 0x74, 0x20, 0x28, 0x6C, 0x6F, 0x6E, 0x67, 0x29, 0x04, 0x00,
+    0x00, 0x00, 0x05, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0B, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x0C, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0D, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x0E, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0x09, 0x00, 0x13, 0x6C, 0x69,
+    0x73, 0x74, 0x54, 0x65, 0x73, 0x74, 0x20, 0x28, 0x63, 0x6F, 0x6D, 0x70, 0x6F, 0x75, 0x6E, 0x64,
+    0x29, 0x0A, 0x00, 0x00, 0x00, 0x02, 0x08, 0x00, 0x04, 0x6E, 0x61, 0x6D, 0x65, 0x00, 0x0F, 0x43,
+    0x6F, 0x6D, 0x70, 0x6F, 0x75, 0x6E, 0x64, 0x20, 0x74, 0x61, 0x67, 0x20, 0x23, 0x30, 0x04, 0x00,
+    0x0A, 0x63, 0x72, 0x65, 0x61, 0x74, 0x65, 0x64, 0x2D, 0x6F, 0x6E, 0x00, 0x00, 0x01, 0x26, 0x52,
+    0x37, 0xD5, 0x8D, 0x00, 0x08, 0x00, 0x04, 0x6E, 0x61, 0x6D, 0x65, 0x00, 0x0F, 0x43, 0x6F, 0x6D,
+    0x70, 0x6F, 0x75, 0x6E, 0x64, 0x20, 0x74, 0x61, 0x67, 0x20, 0x23, 0x31, 0x04, 0x00, 0x0A, 0x63,
+    0x72, 0x65, 0x61, 0x74, 0x65, 0x64, 0x2D, 0x6F, 0x6E, 0x00, 0x00, 0x01, 0x26, 0x52, 0x37, 0xD5,
+    0x8D, 0x00, 0x01, 0x00, 0x08, 0x62, 0x79, 0x74, 0x65, 0x54, 0x65, 0x73, 0x74, 0x7F, 0x07, 0x00,
+    0x65, 0x62, 0x79, 0x74, 0x65, 0x41, 0x72, 0x72, 0x61, 0x79, 0x54, 0x65, 0x73, 0x74, 0x20, 0x28,
+    0x74, 0x68, 0x65, 0x20, 0x66, 0x69, 0x72, 0x73, 0x74, 0x20, 0x31, 0x30, 0x30, 0x30, 0x20, 0x76,
+    0x61, 0x6C, 0x75, 0x65, 0x73, 0x20, 0x6F, 0x66, 0x20, 0x28, 0x6E, 0x2A, 0x6E, 0x2A, 0x32, 0x35,
+    0x35, 0x2B, 0x6E, 0x2A, 0x37, 0x29, 0x25, 0x31, 0x30, 0x30, 0x2C, 0x20, 0x73, 0x74, 0x61, 0x72,
+    0x74, 0x69, 0x6E, 0x67, 0x20, 0x77, 0x69, 0x74, 0x68, 0x20, 0x6E, 0x3D, 0x30, 0x20, 0x28, 0x30,
+    0x2C, 0x20, 0x36, 0x32, 0x2C, 0x20, 0x33, 0x34, 0x2C, 0x20, 0x31, 0x36, 0x2C, 0x20, 0x38, 0x2C,
+    0x20, 0x2E, 0x2E, 0x2E, 0x29, 0x29, 0x00, 0x00, 0x03, 0xE8, 0x00, 0x3E, 0x22, 0x10, 0x08, 0x0A,
+    0x16, 0x2C, 0x4C, 0x12, 0x46, 0x20, 0x04, 0x56, 0x4E, 0x50, 0x5C, 0x0E, 0x2E, 0x58, 0x28, 0x02,
+    0x4A, 0x38, 0x30, 0x32, 0x3E, 0x54, 0x10, 0x3A, 0x0A, 0x48, 0x2C, 0x1A, 0x12, 0x14, 0x20, 0x36,
+    0x56, 0x1C, 0x50, 0x2A, 0x0E, 0x60, 0x58, 0x5A, 0x02, 0x18, 0x38, 0x62, 0x32, 0x0C, 0x54, 0x42,
+    0x3A, 0x3C, 0x48, 0x5E, 0x1A, 0x44, 0x14, 0x52, 0x36, 0x24, 0x1C, 0x1E, 0x2A, 0x40, 0x60, 0x26,
+    0x5A, 0x34, 0x18, 0x06, 0x62, 0x00, 0x0C, 0x22, 0x42, 0x08, 0x3C, 0x16, 0x5E, 0x4C, 0x44, 0x46,
+    0x52, 0x04, 0x24, 0x4E, 0x1E, 0x5C, 0x40, 0x2E, 0x26, 0x28, 0x34, 0x4A, 0x06, 0x30, 0x00, 0x3E,
+    0x22, 0x10, 0x08, 0x0A, 0x16, 0x2C, 0x4C, 0x12, 0x46, 0x20, 0x04, 0x56, 0x4E, 0x50, 0x5C, 0x0E,
+    0x2E, 0x58, 0x28, 0x02, 0x4A, 0x38, 0x30, 0x32, 0x3E, 0x54, 0x10, 0x3A, 0x0A, 0x48, 0x2C, 0x1A,
+    0x12, 0x14, 0x20, 0x36, 0x56, 0x1C, 0x50, 0x2A, 0x0E, 0x60, 0x58, 0x5A, 0x02, 0x18, 0x38, 0x62,
+    0x32, 0x0C, 0x54, 0x42, 0x3A, 0x3C, 0x48, 0x5E, 0x1A, 0x44, 0x14, 0x52, 0x36, 0x24, 0x1C, 0x1E,
+    0x2A, 0x40, 0x60, 0x26, 0x5A, 0x34, 0x18, 0x06, 0x62, 0x00, 0x0C, 0x22, 0x42, 0x08, 0x3C, 0x16,
+    0x5E, 0x4C, 0x44, 0x46, 0x52, 0x04, 0x24, 0x4E, 0x1E, 0x5C, 0x40, 0x2E, 0x26, 0x28, 0x34, 0x4A,
+    0x06, 0x30, 0x00, 0x3E, 0x22, 0x10, 0x08, 0x0A, 0x16, 0x2C, 0x4C, 0x12, 0x46, 0x20, 0x04, 0x56,
+    0x4E, 0x50, 0x5C, 0x0E, 0x2E, 0x58, 0x28, 0x02, 0x4A, 0x38, 0x30, 0x32, 0x3E, 0x54, 0x10, 0x3A,
+    0x0A, 0x48, 0x2C, 0x1A, 0x12, 0x14, 0x20, 0x36, 0x56, 0x1C, 0x50, 0x2A, 0x0E, 0x60, 0x58, 0x5A,
+    0x02, 0x18, 0x38, 0x62, 0x32, 0x0C, 0x54, 0x42, 0x3A, 0x3C, 0x48, 0x5E, 0x1A, 0x44, 0x14, 0x52,
+    0x36, 0x24, 0x1C, 0x1E, 0x2A, 0x40, 0x60, 0x26, 0x5A, 0x34, 0x18, 0x06, 0x62, 0x00, 0x0C, 0x22,
+    0x42, 0x08, 0x3C, 0x16, 0x5E, 0x4C, 0x44, 0x46, 0x52, 0x04, 0x24, 0x4E, 0x1E, 0x5C, 0x40, 0x2E,
+    0x26, 0x28, 0x34, 0x4A, 0x06, 0x30, 0x00, 0x3E, 0x22, 0x10, 0x08, 0x0A, 0x16, 0x2C, 0x4C, 0x12,
+    0x46, 0x20, 0x04, 0x56, 0x4E, 0x50, 0x5C, 0x0E, 0x2E, 0x58, 0x28, 0x02, 0x4A, 0x38, 0x30, 0x32,
+    0x3E, 0x54, 0x10, 0x3A, 0x0A, 0x48, 0x2C, 0x1A, 0x12, 0x14, 0x20, 0x36, 0x56, 0x1C, 0x50, 0x2A,
+    0x0E, 0x60, 0x58, 0x5A, 0x02, 0x18, 0x38, 0x62, 0x32, 0x0C, 0x54, 0x42, 0x3A, 0x3C, 0x48, 0x5E,
+    0x1A, 0x44, 0x14, 0x52, 0x36, 0x24, 0x1C, 0x1E, 0x2A, 0x40, 0x60, 0x26, 0x5A, 0x34, 0x18, 0x06,
+    0x62, 0x00, 0x0C, 0x22, 0x42, 0x08, 0x3C, 0x16, 0x5E, 0x4C, 0x44, 0x46, 0x52, 0x04, 0x24, 0x4E,
+    0x1E, 0x5C, 0x40, 0x2E, 0x26, 0x28, 0x34, 0x4A, 0x06, 0x30, 0x00, 0x3E, 0x22, 0x10, 0x08, 0x0A,
+    0x16, 0x2C, 0x4C, 0x12, 0x46, 0x20, 0x04, 0x56, 0x4E, 0x50, 0x5C, 0x0E, 0x2E, 0x58, 0x28, 0x02,
+    0x4A, 0x38, 0x30, 0x32, 0x3E, 0x54, 0x10, 0x3A, 0x0A, 0x48, 0x2C, 0x1A, 0x12, 0x14, 0x20, 0x36,
+    0x56, 0x1C, 0x50, 0x2A, 0x0E, 0x60, 0x58, 0x5A, 0x02, 0x18, 0x38, 0x62, 0x32, 0x0C, 0x54, 0x42,
+    0x3A, 0x3C, 0x48, 0x5E, 0x1A, 0x44, 0x14, 0x52, 0x36, 0x24, 0x1C, 0x1E, 0x2A, 0x40, 0x60, 0x26,
+    0x5A, 0x34, 0x18, 0x06, 0x62, 0x00, 0x0C, 0x22, 0x42, 0x08, 0x3C, 0x16, 0x5E, 0x4C, 0x44, 0x46,
+    0x52, 0x04, 0x24, 0x4E, 0x1E, 0x5C, 0x40, 0x2E, 0x26, 0x28, 0x34, 0x4A, 0x06, 0x30, 0x00, 0x3E,
+    0x22, 0x10, 0x08, 0x0A, 0x16, 0x2C, 0x4C, 0x12, 0x46, 0x20, 0x04, 0x56, 0x4E, 0x50, 0x5C, 0x0E,
+    0x2E, 0x58, 0x28, 0x02, 0x4A, 0x38, 0x30, 0x32, 0x3E, 0x54, 0x10, 0x3A, 0x0A, 0x48, 0x2C, 0x1A,
+    0x12, 0x14, 0x20, 0x36, 0x56, 0x1C, 0x50, 0x2A, 0x0E, 0x60, 0x58, 0x5A, 0x02, 0x18, 0x38, 0x62,
+    0x32, 0x0C, 0x54, 0x42, 0x3A, 0x3C, 0x48, 0x5E, 0x1A, 0x44, 0x14, 0x52, 0x36, 0x24, 0x1C, 0x1E,
+    0x2A, 0x40, 0x60, 0x26, 0x5A, 0x34, 0x18, 0x06, 0x62, 0x00, 0x0C, 0x22, 0x42, 0x08, 0x3C, 0x16,
+    0x5E, 0x4C, 0x44, 0x46, 0x52, 0x04, 0x24, 0x4E, 0x1E, 0x5C, 0x40, 0x2E, 0x26, 0x28, 0x34, 0x4A,
+    0x06, 0x30, 0x00, 0x3E, 0x22, 0x10, 0x08, 0x0A, 0x16, 0x2C, 0x4C, 0x12, 0x46, 0x20, 0x04, 0x56,
+    0x4E, 0x50, 0x5C, 0x0E, 0x2E, 0x58, 0x28, 0x02, 0x4A, 0x38, 0x30, 0x32, 0x3E, 0x54, 0x10, 0x3A,
+    0x0A, 0x48, 0x2C, 0x1A, 0x12, 0x14, 0x20, 0x36, 0x56, 0x1C, 0x50, 0x2A, 0x0E, 0x60, 0x58, 0x5A,
+    0x02, 0x18, 0x38, 0x62, 0x32, 0x0C, 0x54, 0x42, 0x3A, 0x3C, 0x48, 0x5E, 0x1A, 0x44, 0x14, 0x52,
+    0x36, 0x24, 0x1C, 0x1E, 0x2A, 0x40, 0x60, 0x26, 0x5A, 0x34, 0x18, 0x06, 0x62, 0x00, 0x0C, 0x22,
+    0x42, 0x08, 0x3C, 0x16, 0x5E, 0x4C, 0x44, 0x46, 0x52, 0x04, 0x24, 0x4E, 0x1E, 0x5C, 0x40, 0x2E,
+    0x26, 0x28, 0x34, 0x4A, 0x06, 0x30, 0x00, 0x3E, 0x22, 0x10, 0x08, 0x0A, 0x16, 0x2C, 0x4C, 0x12,
+    0x46, 0x20, 0x04, 0x56, 0x4E, 0x50, 0x5C, 0x0E, 0x2E, 0x58, 0x28, 0x02, 0x4A, 0x38, 0x30, 0x32,
+    0x3E, 0x54, 0x10, 0x3A, 0x0A, 0x48, 0x2C, 0x1A, 0x12, 0x14, 0x20, 0x36, 0x56, 0x1C, 0x50, 0x2A,
+    0x0E, 0x60, 0x58, 0x5A, 0x02, 0x18, 0x38, 0x62, 0x32, 0x0C, 0x54, 0x42, 0x3A, 0x3C, 0x48, 0x5E,
+    0x1A, 0x44, 0x14, 0x52, 0x36, 0x24, 0x1C, 0x1E, 0x2A, 0x40, 0x60, 0x26, 0x5A, 0x34, 0x18, 0x06,
+    0x62, 0x00, 0x0C, 0x22, 0x42, 0x08, 0x3C, 0x16, 0x5E, 0x4C, 0x44, 0x46, 0x52, 0x04, 0x24, 0x4E,
+    0x1E, 0x5C, 0x40, 0x2E, 0x26, 0x28, 0x34, 0x4A, 0x06, 0x30, 0x00, 0x3E, 0x22, 0x10, 0x08, 0x0A,
+    0x16, 0x2C, 0x4C, 0x12, 0x46, 0x20, 0x04, 0x56, 0x4E, 0x50, 0x5C, 0x0E, 0x2E, 0x58, 0x28, 0x02,
+    0x4A, 0x38, 0x30, 0x32, 0x3E, 0x54, 0x10, 0x3A, 0x0A, 0x48, 0x2C, 0x1A, 0x12, 0x14, 0x20, 0x36,
+    0x56, 0x1C, 0x50, 0x2A, 0x0E, 0x60, 0x58, 0x5A, 0x02, 0x18, 0x38, 0x62, 0x32, 0x0C, 0x54, 0x42,
+    0x3A, 0x3C, 0x48, 0x5E, 0x1A, 0x44, 0x14, 0x52, 0x36, 0x24, 0x1C, 0x1E, 0x2A, 0x40, 0x60, 0x26,
+    0x5A, 0x34, 0x18, 0x06, 0x62, 0x00, 0x0C, 0x22, 0x42, 0x08, 0x3C, 0x16, 0x5E, 0x4C, 0x44, 0x46,
+    0x52, 0x04, 0x24, 0x4E, 0x1E, 0x5C, 0x40, 0x2E, 0x26, 0x28, 0x34, 0x4A, 0x06, 0x30, 0x00, 0x3E,
+    0x22, 0x10, 0x08, 0x0A, 0x16, 0x2C, 0x4C, 0x12, 0x46, 0x20, 0x04, 0x56, 0x4E, 0x50, 0x5C, 0x0E,
+    0x2E, 0x58, 0x28, 0x02, 0x4A, 0x38, 0x30, 0x32, 0x3E, 0x54, 0x10, 0x3A, 0x0A, 0x48, 0x2C, 0x1A,
+    0x12, 0x14, 0x20, 0x36, 0x56, 0x1C, 0x50, 0x2A, 0x0E, 0x60, 0x58, 0x5A, 0x02, 0x18, 0x38, 0x62,
+    0x32, 0x0C, 0x54, 0x42, 0x3A, 0x3C, 0x48, 0x5E, 0x1A, 0x44, 0x14, 0x52, 0x36, 0x24, 0x1C, 0x1E,
+    0x2A, 0x40, 0x60, 0x26, 0x5A, 0x34, 0x18, 0x06, 0x62, 0x00, 0x0C, 0x22, 0x42, 0x08, 0x3C, 0x16,
+    0x5E, 0x4C, 0x44, 0x46, 0x52, 0x04, 0x24, 0x4E, 0x1E, 0x5C, 0x40, 0x2E, 0x26, 0x28, 0x34, 0x4A,
+    0x06, 0x30, 0x06, 0x00, 0x0A, 0x64, 0x6F, 0x75, 0x62, 0x6C, 0x65, 0x54, 0x65, 0x73, 0x74, 0x3F,
+    0xDF, 0x8F, 0x6B, 0xBB, 0xFF, 0x6A, 0x5E, 0x00 ];
+    read_test(&data);
+}
+
+fn read_test(data: &[u8]) {
+    let cursor: std::io::Cursor<&[u8]> = std::io::Cursor::new(data);
+    println!("data: {:?}", data);
+    let nbt_data = data::NbtItem::try_from(cursor).unwrap();
+    println!("nbt_data: {:#?}", nbt_data);
+}

src/read.rs

@@ -1,6 +1,6 @@
 use crate::data::{NbtItem, NbtList, NbtValue, Reader};
 use std::convert::From;
-use std::io::{Cursor, Read};
+use std::io::{BufRead, Cursor, Read};
 
 /// 输出类型标识符
 /// 类型标识符
@@ -164,17 +164,21 @@ pub mod read_data {
         // 进来直接是 values
         // loop 读取长度 name len name value value
         // 直到一个 End
+        #[cfg(feature = "debug")]
+        println!("reading compound {} bytes", value.position());
         let mut map: HashMap<Arc<str>, NbtItem> = HashMap::new();
         loop {
+            // 读取 name
+            // 直接调之前的方法读
+            let name = NbtValue::from_string(value).as_string().unwrap();
             let mut type_tag = [0_u8; 1];
             _ = value.read(&mut type_tag).unwrap();
+            #[cfg(feature = "debug")]
+            println!("compound type tag {:?} with name: {:?}", type_tag, name);
             if type_tag == [0x00] {
                 // End
                 break;
             }
-            // 读取 name
-            // 直接调之前的方法读
-            let name = NbtValue::from_string(value).as_string().unwrap();
             // 读取 value
             let nbt_value: NbtItem = match type_tag {
                 [0x01] => NbtItem::Value(NbtValue::from_bool(value)),
@@ -203,6 +207,8 @@ pub mod read_data {
             };
             // 读取完了，放进去
             map.insert(name, nbt_value);
+            #[cfg(feature = "debug")]
+            println!("compound: {:?}", map);
         }
         NbtList::from(map)
     }
@@ -229,10 +235,13 @@ impl TryFrom<Cursor<&[u8]>> for NbtItem {
     fn try_from(in_value: Reader) -> Result<NbtItem, Self::Error> {
         let mut value: Reader = in_value.clone();
         let mut items: Vec<NbtItem> = Vec::new();
+        #[cfg(feature = "debug")]
+        println!("reader pos: {:?}", value.position());
         loop {
             // 读取类型
             let mut buff = [0_u8; 1];
             _ = value.read(&mut buff).unwrap();
+            let name = NbtValue::from_string(&mut value).as_string().unwrap();
             let type_code: NbtStatus = match buff {
                 [0x00] => NbtStatus::End,
                 [0x01] => NbtStatus::Going(NbtItem::Value(NbtValue::from_bool(&mut value))),
@@ -256,12 +265,21 @@ impl TryFrom<Cursor<&[u8]>> for NbtItem {
                     ),
                 )),
             };
+            #[cfg(feature = "debug")]
+            println!(
+                "==type_code: {:?} reader pos: {:?}",
+                buff,
+                value.position()
+            );
             match type_code {
                 NbtStatus::End => {
                     break;
                 }
                 NbtStatus::Going(item) => {
                     items.push(item);
+                    if !value.has_data_left().unwrap() {
+                        break;
+                    }
                 }
                 NbtStatus::Error(e) => {
                     return Err(e);

src/rustfmt.toml

@@ -1,13 +1,13 @@
 # cargo fmt config
 
 # 最大行长
-max_width = 150
+max_width = 100
 # 链式调用的最大长度
-chain_width = 100
+chain_width = 80
 # 数组的最大长度
-array_width = 100
+array_width = 80
 # 函数参数的最大长度
-attr_fn_like_width = 100
+attr_fn_like_width = 80
 # 函数调用参数的最大长度
 fn_call_width = 80
 # 简单函数格式化为单行