azalea_core/
resource_location.rs1use std::{
4 fmt,
5 io::{Cursor, Write},
6 str::FromStr,
7};
8
9use azalea_buf::{AzaleaRead, AzaleaWrite, BufReadError};
10#[cfg(feature = "serde")]
11use serde::{de, Deserialize, Deserializer, Serialize, Serializer};
12use simdnbt::{owned::NbtTag, FromNbtTag, ToNbtTag};
13
14#[derive(Hash, Clone, PartialEq, Eq)]
15pub struct ResourceLocation {
16 pub namespace: String,
17 pub path: String,
18}
19
20static DEFAULT_NAMESPACE: &str = "minecraft";
21impl ResourceLocation {
24 pub fn new(resource_string: &str) -> ResourceLocation {
25 let sep_byte_position_option = resource_string.chars().position(|c| c == ':');
26 let (namespace, path) = if let Some(sep_byte_position) = sep_byte_position_option {
27 if sep_byte_position == 0 {
28 (DEFAULT_NAMESPACE, &resource_string[1..])
29 } else {
30 (
31 &resource_string[..sep_byte_position],
32 &resource_string[sep_byte_position + 1..],
33 )
34 }
35 } else {
36 (DEFAULT_NAMESPACE, resource_string)
37 };
38 ResourceLocation {
39 namespace: namespace.to_string(),
40 path: path.to_string(),
41 }
42 }
43}
44
45impl fmt::Display for ResourceLocation {
46 fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
47 write!(f, "{}:{}", self.namespace, self.path)
48 }
49}
50impl fmt::Debug for ResourceLocation {
51 fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
52 write!(f, "{}:{}", self.namespace, self.path)
53 }
54}
55impl FromStr for ResourceLocation {
56 type Err = &'static str;
57
58 fn from_str(s: &str) -> Result<Self, Self::Err> {
59 Ok(ResourceLocation::new(s))
60 }
61}
62
63impl AzaleaRead for ResourceLocation {
64 fn azalea_read(buf: &mut Cursor<&[u8]>) -> Result<Self, BufReadError> {
65 let location_string = String::azalea_read(buf)?;
66 Ok(ResourceLocation::new(&location_string))
67 }
68}
69impl AzaleaWrite for ResourceLocation {
70 fn azalea_write(&self, buf: &mut impl Write) -> Result<(), std::io::Error> {
71 self.to_string().azalea_write(buf)
72 }
73}
74
75#[cfg(feature = "serde")]
76impl Serialize for ResourceLocation {
77 fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
78 where
79 S: Serializer,
80 {
81 serializer.serialize_str(&self.to_string())
82 }
83}
84
85#[cfg(feature = "serde")]
86impl<'de> Deserialize<'de> for ResourceLocation {
87 fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
88 where
89 D: Deserializer<'de>,
90 {
91 let s = String::deserialize(deserializer)?;
92 if s.contains(':') {
93 Ok(ResourceLocation::new(&s))
94 } else {
95 Err(de::Error::invalid_value(
96 de::Unexpected::Str(&s),
97 &"a valid ResourceLocation",
98 ))
99 }
100 }
101}
102
103impl FromNbtTag for ResourceLocation {
104 fn from_nbt_tag(tag: simdnbt::borrow::NbtTag) -> Option<Self> {
105 tag.string().and_then(|s| s.to_str().parse().ok())
106 }
107}
108
109impl ToNbtTag for ResourceLocation {
110 fn to_nbt_tag(self) -> NbtTag {
111 NbtTag::String(self.to_string().into())
112 }
113}
114
115#[cfg(test)]
116mod tests {
117 use super::*;
118
119 #[test]
120 fn basic_resource_location() {
121 let r = ResourceLocation::new("abcdef:ghijkl");
122 assert_eq!(r.namespace, "abcdef");
123 assert_eq!(r.path, "ghijkl");
124 }
125 #[test]
126 fn no_namespace() {
127 let r = ResourceLocation::new("azalea");
128 assert_eq!(r.namespace, "minecraft");
129 assert_eq!(r.path, "azalea");
130 }
131 #[test]
132 fn colon_start() {
133 let r = ResourceLocation::new(":azalea");
134 assert_eq!(r.namespace, "minecraft");
135 assert_eq!(r.path, "azalea");
136 }
137 #[test]
138 fn colon_end() {
139 let r = ResourceLocation::new("azalea:");
140 assert_eq!(r.namespace, "azalea");
141 assert_eq!(r.path, "");
142 }
143
144 #[test]
145 fn azbuf_resource_location() {
146 let mut buf = Vec::new();
147 ResourceLocation::new("minecraft:dirt")
148 .azalea_write(&mut buf)
149 .unwrap();
150
151 let mut buf = Cursor::new(&buf[..]);
152
153 assert_eq!(
154 ResourceLocation::azalea_read(&mut buf).unwrap(),
155 ResourceLocation::new("minecraft:dirt")
156 );
157 }
158}