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|
//! An arbitrary identifier or resource location.
use std::{
fmt,
io::{self, Cursor, Write},
str::FromStr,
};
use azalea_buf::{AzaleaRead, AzaleaWrite, BufReadError};
use serde::{Deserialize, Deserializer, Serialize, Serializer, de};
use simdnbt::{FromNbtTag, ToNbtTag, owned::NbtTag};
/// An identifier, like `minecraft:stone` or `brigadier:number`.
///
/// This was formerly called a `ResourceLocation`.
#[doc(alias = "ResourceLocation")]
#[derive(Hash, Clone, PartialEq, Eq, Default)]
pub struct Identifier {
pub namespace: String,
pub path: String,
}
static DEFAULT_NAMESPACE: &str = "minecraft";
// static REALMS_NAMESPACE: &str = "realms";
impl Identifier {
pub fn new(resource_string: &str) -> Identifier {
let sep_byte_position_option = resource_string.chars().position(|c| c == ':');
let (namespace, path) = if let Some(sep_byte_position) = sep_byte_position_option {
if sep_byte_position == 0 {
(DEFAULT_NAMESPACE, &resource_string[1..])
} else {
(
&resource_string[..sep_byte_position],
&resource_string[sep_byte_position + 1..],
)
}
} else {
(DEFAULT_NAMESPACE, resource_string)
};
Identifier {
namespace: namespace.to_string(),
path: path.to_string(),
}
}
}
impl fmt::Display for Identifier {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(f, "{}:{}", self.namespace, self.path)
}
}
impl fmt::Debug for Identifier {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(f, "{}:{}", self.namespace, self.path)
}
}
impl FromStr for Identifier {
type Err = &'static str;
fn from_str(s: &str) -> Result<Self, Self::Err> {
Ok(Identifier::new(s))
}
}
impl From<&str> for Identifier {
fn from(s: &str) -> Self {
Identifier::new(s)
}
}
impl AzaleaRead for Identifier {
fn azalea_read(buf: &mut Cursor<&[u8]>) -> Result<Self, BufReadError> {
let location_string = String::azalea_read(buf)?;
Ok(Identifier::new(&location_string))
}
}
impl AzaleaWrite for Identifier {
fn azalea_write(&self, buf: &mut impl Write) -> io::Result<()> {
self.to_string().azalea_write(buf)
}
}
impl Serialize for Identifier {
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where
S: Serializer,
{
serializer.serialize_str(&self.to_string())
}
}
impl<'de> Deserialize<'de> for Identifier {
fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
where
D: Deserializer<'de>,
{
let s = String::deserialize(deserializer)?;
if s.contains(':') {
Ok(Identifier::new(&s))
} else {
Err(de::Error::invalid_value(
de::Unexpected::Str(&s),
&"a valid Identifier",
))
}
}
}
impl FromNbtTag for Identifier {
fn from_nbt_tag(tag: simdnbt::borrow::NbtTag) -> Option<Self> {
tag.string().and_then(|s| s.to_str().parse().ok())
}
}
impl ToNbtTag for Identifier {
fn to_nbt_tag(self) -> NbtTag {
NbtTag::String(self.to_string().into())
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn basic_identifier() {
let r = Identifier::new("abcdef:ghijkl");
assert_eq!(r.namespace, "abcdef");
assert_eq!(r.path, "ghijkl");
}
#[test]
fn no_namespace() {
let r = Identifier::new("azalea");
assert_eq!(r.namespace, "minecraft");
assert_eq!(r.path, "azalea");
}
#[test]
fn colon_start() {
let r = Identifier::new(":azalea");
assert_eq!(r.namespace, "minecraft");
assert_eq!(r.path, "azalea");
}
#[test]
fn colon_end() {
let r = Identifier::new("azalea:");
assert_eq!(r.namespace, "azalea");
assert_eq!(r.path, "");
}
#[test]
fn azbuf_identifier() {
let mut buf = Vec::new();
Identifier::new("minecraft:dirt")
.azalea_write(&mut buf)
.unwrap();
let mut buf = Cursor::new(&buf[..]);
assert_eq!(
Identifier::azalea_read(&mut buf).unwrap(),
Identifier::new("minecraft:dirt")
);
}
}
|
