diff --git a/v2/src/data_struct.rs b/v2/src/data_struct.rs index fb5aec5..50a9165 100644 --- a/v2/src/data_struct.rs +++ b/v2/src/data_struct.rs @@ -1,4 +1,4 @@ -use std::{borrow::Cow, collections::HashMap}; +use std::borrow::Cow; /// NBT 里除了字符串的长度量都是 i32 #[allow(unused)] @@ -31,12 +31,12 @@ impl NbtData { value } pub fn read_short(&mut self) -> i16 { - let value = i16::from_le_bytes([self.data[self.head], self.data[self.head + 1]]); + let value = i16::from_be_bytes([self.data[self.head], self.data[self.head + 1]]); self.head += 2; value } pub fn read_int(&mut self) -> i32 { - let value = i32::from_le_bytes([ + let value = i32::from_be_bytes([ self.data[self.head], self.data[self.head + 1], self.data[self.head + 2], @@ -46,7 +46,7 @@ impl NbtData { value } pub fn read_long(&mut self) -> i64 { - let value = i64::from_le_bytes([ + let value = i64::from_be_bytes([ self.data[self.head], self.data[self.head + 1], self.data[self.head + 2], @@ -60,7 +60,7 @@ impl NbtData { value } pub fn read_float(&mut self) -> f32 { - let value = f32::from_le_bytes([ + let value = f32::from_be_bytes([ self.data[self.head], self.data[self.head + 1], self.data[self.head + 2], @@ -70,7 +70,7 @@ impl NbtData { value } pub fn read_double(&mut self) -> f64 { - let value = f64::from_le_bytes([ + let value = f64::from_be_bytes([ self.data[self.head], self.data[self.head + 1], self.data[self.head + 2], @@ -102,7 +102,7 @@ pub mod raw_reading { } else { (slice.len() / 2) as usize }; - Some(unsafe { Vec::from_raw_parts(slice.as_ptr() as *mut i16, length, length) }) + Some(unsafe { std::slice::from_raw_parts(slice.as_ptr() as *mut i16, length).to_vec() }) } /// 开始 unsafe 了 /// unsafe rust, 小子! @@ -112,7 +112,7 @@ pub mod raw_reading { } else { (slice.len() / 4) as usize }; - Some(unsafe { Vec::from_raw_parts(slice.as_ptr() as *mut i32, 4, length) }) + Some(unsafe { std::slice::from_raw_parts(slice.as_ptr() as *mut i32, length).to_vec() }) } /// 这边也是 unsafe 捏 pub fn slice_as_long_array(slice: &[u8]) -> Option> { @@ -121,7 +121,7 @@ pub mod raw_reading { } else { (slice.len() / 8) as usize }; - Some(unsafe { Vec::from_raw_parts(slice.as_ptr() as *mut i64, 8, length) }) + Some(unsafe { std::slice::from_raw_parts(slice.as_ptr() as *mut i64, length).to_vec() }) } /// 这边也是 unsafe 捏 pub fn slice_as_float_array(slice: &[u8]) -> Option> { @@ -130,7 +130,7 @@ pub mod raw_reading { } else { (slice.len() / 4) as usize }; - Some(unsafe { Vec::from_raw_parts(slice.as_ptr() as *mut f32, 4, length) }) + Some(unsafe { std::slice::from_raw_parts(slice.as_ptr() as *mut f32, length).to_vec() }) } /// 这边也是 unsafe 捏 pub fn slice_as_double_array(slice: &[u8]) -> Option> { @@ -139,11 +139,12 @@ pub mod raw_reading { } else { (slice.len() / 8) as usize }; - Some(unsafe { Vec::from_raw_parts(slice.as_ptr() as *mut f64, 8, length) }) + Some(unsafe { std::slice::from_raw_parts(slice.as_ptr() as *mut f64, length).to_vec() }) } } #[allow(unused)] +#[derive(Debug)] pub enum Value<'value> { // 还有一个 End: 0 /// 1 @@ -169,11 +170,11 @@ pub enum Value<'value> { /// 9 List(ListContent<'value>), /// 10 - Compound(HashMap, Value<'value>>), + Compound(Vec<(String, Value<'value>)>), } #[allow(unused)] -#[allow(unused)] +#[derive(Debug)] pub enum ListContent<'value> { ByteList(Vec), ShortList(Vec), @@ -185,7 +186,7 @@ pub enum ListContent<'value> { ByteArrayList(Vec>), IntArrayList(Vec>), LongArrayList(Vec>), - CompoundList(Vec>>), + CompoundList(Vec)>>), ListList(Vec>), } @@ -272,16 +273,19 @@ impl<'value> Value<'value> { let mut list = Vec::with_capacity(length as usize); for _ in 0..length { let inner_list = Self::read_list(data); - let value = match inner_list { - Self::List(value) => value, - _ => panic!("WTF, type_id = {}", type_id), - }; + let value = inner_list.into_list().unwrap(); list.push(value); } Self::List(ListContent::ListList(list)) } 10 => { - todo!("CompoundList, wait for Compound impl") + let mut list = Vec::with_capacity(length as usize); + for _ in 0..length { + let inner_compound = Self::read_compound(data); + let value = inner_compound.into_compound().unwrap(); + list.push(value); + } + Self::List(ListContent::CompoundList(list)) } 11 => { let mut list = Vec::with_capacity(length as usize); @@ -308,9 +312,12 @@ impl<'value> Value<'value> { } pub fn read_compound(data: &mut NbtData) -> Self { let mut type_id = 1; - let mut map = std::collections::HashMap::new(); + let mut list = vec![]; while type_id != 0 { type_id = data.read_byte(); + if type_id == 0 { + break; + } let name_len = data.read_short(); let name = String::from_utf8(data.read_bytes(name_len as usize)).unwrap(); let value = match type_id { @@ -344,9 +351,9 @@ impl<'value> Value<'value> { } _ => panic!("WTF, type_id = {}", type_id), }; - map.insert(name.into(), value); + list.push((name, value)); } - Self::Compound(map) + Self::Compound(list) } pub fn as_byte(&self) -> Option { match self { @@ -396,28 +403,49 @@ impl<'value> Value<'value> { _ => None, } } - pub fn as_compound(&self) -> Option<&HashMap, Value<'value>>> { + pub fn as_compound(&self) -> Option<&Vec<(String, Value<'value>)>> { match self { Self::Compound(value) => Some(value), _ => None, } } - pub fn as_byte_array(&self) -> Option<&[i8]> { + pub fn as_byte_array(&self) -> Option<&Vec> { match self { Self::ByteArray(value) => Some(value), _ => None, } } - pub fn as_int_array(&self) -> Option<&[i32]> { + pub fn as_int_array(&self) -> Option<&Vec> { match self { Self::IntArray(value) => Some(value), _ => None, } } - pub fn as_long_array(&self) -> Option<&[i64]> { + pub fn as_long_array(&self) -> Option<&Vec> { match self { Self::LongArray(value) => Some(value), _ => None, } } + pub fn into_list(self) -> Option> { + match self { + Self::List(value) => Some(value), + _ => None, + } + } + pub fn into_compound(self) -> Option)>> { + match self { + Self::Compound(value) => Some(value), + _ => None, + } + } + pub fn from_vec(data: Vec) -> Self { + let mut nbt_data = NbtData::new(data); + let _type_id = nbt_data.read_byte(); + let _name_len = nbt_data.read_short(); + println!("{} {}", _type_id, _name_len); + let name = String::from_utf8(nbt_data.read_bytes(_name_len as usize)).unwrap(); + println!("{}", name); + Value::read_compound(&mut nbt_data) + } } diff --git a/v2/src/main.rs b/v2/src/main.rs index 9df3cb0..fcd1b8f 100644 --- a/v2/src/main.rs +++ b/v2/src/main.rs @@ -1,5 +1,152 @@ mod data_struct; fn main() { - println!("Hello, world!"); + small_read_test(); + big_read_test(); + cli_read_test(); +} + +fn cli_read_test() { + let mut args = std::env::args(); + // 如果有, 取出 + if let Some(arg) = args.nth(1) { + let data = std::fs::read(arg).unwrap(); + read_test(data); + } else { + println!("Usage: cargo run --release -- "); + } +} + +fn small_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.to_vec()); +} + +fn big_read_test() { + 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, 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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.to_vec()); +} + +fn read_test(data: Vec) { + let len = data.len(); + let start_time = std::time::Instant::now(); + let data = data_struct::Value::from_vec(data); + let end_time = std::time::Instant::now(); + println!("===local nbt==="); + println!("time: {:?}", end_time - start_time); + println!("speed: {:?} (bytes/sec)", len as f64 / (end_time - start_time).as_secs_f64()); + println!("{:?} (kb/sec)", len as f64 / (end_time - start_time).as_secs_f64() / 1024.0); + println!( + "{:?} (mb/sec)", + len as f64 / (end_time - start_time).as_secs_f64() / 1024.0 / 1024.0 + ); + // println!("{:?}", data); }