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//! Utilities for reading and writing for the Minecraft protocol
mod definitions;
mod read;
mod write;
pub use definitions::{BitSet, EntityMetadata, ParticleData, UnsizedByteArray};
pub use read::{read_varint_async, McBufReadable, McBufVarReadable, Readable};
pub use write::{McBufVarWritable, McBufWritable, Writable};
// const DEFAULT_NBT_QUOTA: u32 = 2097152;
const MAX_STRING_LENGTH: u16 = 32767;
// const MAX_COMPONENT_STRING_LENGTH: u32 = 262144;
// TODO: maybe get rid of the readable/writable traits so there's not two ways to do the same thing and improve McBufReadable/McBufWritable
// TODO: have a definitions.rs in mc_buf that contains UnsizedByteArray and BitSet
#[cfg(test)]
mod tests {
use super::*;
use azalea_core::resource_location::ResourceLocation;
use std::{collections::HashMap, io::Cursor};
#[test]
fn test_write_varint() {
let mut buf = Vec::new();
buf.write_varint(0).unwrap();
assert_eq!(buf, vec![0]);
let mut buf = Vec::new();
buf.write_varint(1).unwrap();
assert_eq!(buf, vec![1]);
let mut buf = Vec::new();
buf.write_varint(2).unwrap();
assert_eq!(buf, vec![2]);
let mut buf = Vec::new();
buf.write_varint(127).unwrap();
assert_eq!(buf, vec![127]);
let mut buf = Vec::new();
buf.write_varint(128).unwrap();
assert_eq!(buf, vec![128, 1]);
let mut buf = Vec::new();
buf.write_varint(255).unwrap();
assert_eq!(buf, vec![255, 1]);
let mut buf = Vec::new();
buf.write_varint(25565).unwrap();
assert_eq!(buf, vec![221, 199, 1]);
let mut buf = Vec::new();
buf.write_varint(2097151).unwrap();
assert_eq!(buf, vec![255, 255, 127]);
let mut buf = Vec::new();
buf.write_varint(2147483647).unwrap();
assert_eq!(buf, vec![255, 255, 255, 255, 7]);
let mut buf = Vec::new();
buf.write_varint(-1).unwrap();
assert_eq!(buf, vec![255, 255, 255, 255, 15]);
let mut buf = Vec::new();
buf.write_varint(-2147483648).unwrap();
assert_eq!(buf, vec![128, 128, 128, 128, 8]);
}
#[test]
fn test_read_varint() {
let mut buf = Cursor::new(vec![0]);
assert_eq!(buf.read_varint().unwrap(), 0);
assert_eq!(buf.get_varint_size(0), 1);
let mut buf = Cursor::new(vec![1]);
assert_eq!(buf.read_varint().unwrap(), 1);
assert_eq!(buf.get_varint_size(1), 1);
let mut buf = Cursor::new(vec![2]);
assert_eq!(buf.read_varint().unwrap(), 2);
assert_eq!(buf.get_varint_size(2), 1);
let mut buf = Cursor::new(vec![127]);
assert_eq!(buf.read_varint().unwrap(), 127);
assert_eq!(buf.get_varint_size(127), 1);
let mut buf = Cursor::new(vec![128, 1]);
assert_eq!(buf.read_varint().unwrap(), 128);
assert_eq!(buf.get_varint_size(128), 2);
let mut buf = Cursor::new(vec![255, 1]);
assert_eq!(buf.read_varint().unwrap(), 255);
assert_eq!(buf.get_varint_size(255), 2);
let mut buf = Cursor::new(vec![221, 199, 1]);
assert_eq!(buf.read_varint().unwrap(), 25565);
assert_eq!(buf.get_varint_size(25565), 3);
let mut buf = Cursor::new(vec![255, 255, 127]);
assert_eq!(buf.read_varint().unwrap(), 2097151);
assert_eq!(buf.get_varint_size(2097151), 3);
let mut buf = Cursor::new(vec![255, 255, 255, 255, 7]);
assert_eq!(buf.read_varint().unwrap(), 2147483647);
assert_eq!(buf.get_varint_size(2147483647), 5);
let mut buf = Cursor::new(vec![255, 255, 255, 255, 15]);
assert_eq!(buf.read_varint().unwrap(), -1);
assert_eq!(buf.get_varint_size(-1), 5);
let mut buf = Cursor::new(vec![128, 128, 128, 128, 8]);
assert_eq!(buf.read_varint().unwrap(), -2147483648);
assert_eq!(buf.get_varint_size(-2147483648), 5);
}
#[test]
fn test_read_varint_longer() {
let mut buf = Cursor::new(vec![138, 56, 0, 135, 56, 123]);
assert_eq!(buf.read_varint().unwrap(), 7178);
}
#[test]
fn test_list() {
let mut buf = Vec::new();
buf.write_list(&vec!["a", "bc", "def"], |buf, s| buf.write_utf(s))
.unwrap();
// there's no read_list because idk how to do it in rust
let mut buf = Cursor::new(buf);
let mut result = Vec::new();
let length = buf.read_varint().unwrap();
for _ in 0..length {
result.push(buf.read_utf().unwrap());
}
assert_eq!(result, vec!["a", "bc", "def"]);
}
#[test]
fn test_int_id_list() {
let mut buf = Vec::new();
buf.write_list(&vec![1, 2, 3], |buf, i| buf.write_varint(*i))
.unwrap();
let mut buf = Cursor::new(buf);
let result = buf.read_int_id_list().unwrap();
assert_eq!(result, vec![1, 2, 3]);
}
#[test]
fn test_map() {
let mut buf = Vec::new();
buf.write_map(
vec![("a", 1), ("bc", 23), ("def", 456)],
Vec::write_utf,
Vec::write_varint,
)
.unwrap();
let mut buf = Cursor::new(buf);
let mut result = Vec::new();
let length = buf.read_varint().unwrap();
for _ in 0..length {
result.push((buf.read_utf().unwrap(), buf.read_varint().unwrap()));
}
assert_eq!(
result,
vec![
("a".to_string(), 1),
("bc".to_string(), 23),
("def".to_string(), 456)
]
);
}
#[test]
fn test_nbt() {
let mut buf = Vec::new();
buf.write_nbt(&azalea_nbt::Tag::Compound(HashMap::from_iter(vec![(
"hello world".to_string(),
azalea_nbt::Tag::Compound(HashMap::from_iter(vec![(
"name".to_string(),
azalea_nbt::Tag::String("Bananrama".to_string()),
)])),
)])))
.unwrap();
let mut buf = Cursor::new(buf);
let result = buf.read_nbt().unwrap();
assert_eq!(
result,
azalea_nbt::Tag::Compound(HashMap::from_iter(vec![(
"hello world".to_string(),
azalea_nbt::Tag::Compound(HashMap::from_iter(vec![(
"name".to_string(),
azalea_nbt::Tag::String("Bananrama".to_string()),
)])),
)]))
);
}
#[test]
fn test_long() {
let mut buf = Vec::new();
buf.write_long(123456).unwrap();
let mut buf = Cursor::new(buf);
assert_eq!(buf.read_long().unwrap(), 123456);
}
#[test]
fn test_resource_location() {
let mut buf = Vec::new();
buf.write_resource_location(&ResourceLocation::new("minecraft:dirt").unwrap())
.unwrap();
let mut buf = Cursor::new(buf);
assert_eq!(
buf.read_resource_location().unwrap(),
ResourceLocation::new("minecraft:dirt").unwrap()
);
}
}
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