use std::{cell::OnceCell, ops::Deref, str::FromStr};
use regex::Regex;
#[cfg(feature = "dag-cbor")]
mod cid_link_ipld;
#[cfg(not(feature = "dag-cbor"))]
mod cid_link_json;
#[cfg(feature = "dag-cbor")]
pub use cid_link_ipld::CidLink;
#[cfg(not(feature = "dag-cbor"))]
pub use cid_link_json::CidLink;
mod integer;
pub use integer::*;
pub mod string;
#[derive(Debug, Clone, PartialEq, Eq, serde::Serialize)]
pub struct RecordKey(String);
impl RecordKey {
pub fn as_str(&self) -> &str {
self.0.as_str()
}
}
impl FromStr for RecordKey {
type Err = &'static str;
fn from_str(s: &str) -> Result<Self, Self::Err> {
const RE_RKEY: OnceCell<Regex> = OnceCell::new();
if [".", ".."].contains(&s) {
Err("Disallowed rkey")
} else if !RE_RKEY
.get_or_init(|| Regex::new(r"^[a-zA-Z0-9._~-]{1,512}$").unwrap())
.is_match(&s)
{
Err("Invalid rkey")
} else {
Ok(Self(s.into()))
}
}
}
impl<'de> serde::Deserialize<'de> for RecordKey {
fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
where
D: serde::Deserializer<'de>,
{
use serde::de::Error;
let value = serde::Deserialize::deserialize(deserializer)?;
Self::from_str(value).map_err(D::Error::custom)
}
}
impl Into<String> for RecordKey {
fn into(self) -> String {
self.0
}
}
impl AsRef<str> for RecordKey {
fn as_ref(&self) -> &str {
self.as_str()
}
}
impl Deref for RecordKey {
type Target = str;
fn deref(&self) -> &Self::Target {
self.as_str()
}
}
#[derive(serde::Serialize, serde::Deserialize, Debug, Clone, PartialEq, Eq)]
#[serde(untagged)]
pub enum BlobRef {
Typed(TypedBlobRef),
Untyped(UnTypedBlobRef),
}
#[derive(serde::Serialize, serde::Deserialize, Debug, Clone, PartialEq, Eq)]
#[serde(tag = "$type", rename_all = "lowercase")]
pub enum TypedBlobRef {
Blob(Blob),
}
#[derive(serde::Serialize, serde::Deserialize, Debug, Clone, PartialEq, Eq)]
#[serde(rename_all = "camelCase")]
pub struct UnTypedBlobRef {
pub cid: String,
pub mime_type: String,
}
#[derive(serde::Serialize, serde::Deserialize, Debug, Clone, PartialEq, Eq)]
#[serde(rename_all = "camelCase")]
pub struct Blob {
pub r#ref: CidLink,
pub mime_type: String,
pub size: usize, }
#[cfg(test)]
mod tests {
use super::*;
use serde_json::{from_str, to_string};
const CID_LINK_JSON: &str =
r#"{"$link":"bafkreibme22gw2h7y2h7tg2fhqotaqjucnbc24deqo72b6mkl2egezxhvy"}"#;
#[test]
fn valid_rkey() {
for valid in &["3jui7kd54zh2y", "self", "example.com", "~1.2-3_", "dHJ1ZQ"] {
assert!(
from_str::<RecordKey>(&format!("\"{}\"", valid)).is_ok(),
"valid rkey `{}` parsed as invalid",
valid,
);
}
}
#[test]
fn invalid_rkey() {
for invalid in &[
"literal:self",
"alpha/beta",
".",
"..",
"#extra",
"@handle",
"any space",
"any+space",
"number[3]",
"number(3)",
"\"quote\"",
"pre:fix",
"dHJ1ZQ==",
] {
assert!(
from_str::<RecordKey>(&format!("\"{}\"", invalid)).is_err(),
"invalid rkey `{}` parsed as valid",
invalid,
);
}
}
#[test]
fn test_cid_link_serde_json() {
let deserialized =
from_str::<CidLink>(CID_LINK_JSON).expect("failed to deserialize cid-link");
let serialized = to_string(&deserialized).expect("failed to serialize cid-link");
assert_eq!(serialized, CID_LINK_JSON);
}
#[test]
fn test_blob_ref_typed_deserialize_json() {
let json = format!(
r#"{{"$type":"blob","ref":{},"mimeType":"text/plain","size":0}}"#,
CID_LINK_JSON
);
let deserialized = from_str::<BlobRef>(&json).expect("failed to deserialize blob-ref");
assert_eq!(
deserialized,
BlobRef::Typed(TypedBlobRef::Blob(Blob {
r#ref: CidLink::try_from(
"bafkreibme22gw2h7y2h7tg2fhqotaqjucnbc24deqo72b6mkl2egezxhvy"
)
.expect("failed to create cid-link"),
mime_type: "text/plain".into(),
size: 0
}))
);
}
#[test]
fn test_blob_ref_untyped_deserialize_json() {
let json = r#"{"cid":"bafkreibme22gw2h7y2h7tg2fhqotaqjucnbc24deqo72b6mkl2egezxhvy","mimeType":"text/plain"}"#;
let deserialized = from_str::<BlobRef>(json).expect("failed to deserialize blob-ref");
assert_eq!(
deserialized,
BlobRef::Untyped(UnTypedBlobRef {
cid: "bafkreibme22gw2h7y2h7tg2fhqotaqjucnbc24deqo72b6mkl2egezxhvy".into(),
mime_type: "text/plain".into(),
})
);
}
#[test]
fn test_blob_ref_serialize_json() {
let blob_ref = BlobRef::Typed(TypedBlobRef::Blob(Blob {
r#ref: CidLink::try_from("bafkreibme22gw2h7y2h7tg2fhqotaqjucnbc24deqo72b6mkl2egezxhvy")
.expect("failed to create cid-link"),
mime_type: "text/plain".into(),
size: 0,
}));
let serialized = to_string(&blob_ref).expect("failed to serialize blob-ref");
assert_eq!(
serialized,
format!(
r#"{{"$type":"blob","ref":{},"mimeType":"text/plain","size":0}}"#,
CID_LINK_JSON
)
);
}
#[cfg(feature = "dag-cbor")]
#[test]
fn test_blob_ref_deserialize_dag_cbor() {
let dag_cbor = [
0xa4, 0x65, 0x24, 0x74, 0x79, 0x70, 0x65, 0x64, 0x62, 0x6c, 0x6f, 0x62, 0x63, 0x72,
0x65, 0x66, 0xd8, 0x2a, 0x58, 0x25, 0x00, 0x01, 0x55, 0x12, 0x20, 0x2c, 0x26, 0xb4,
0x6b, 0x68, 0xff, 0xc6, 0x8f, 0xf9, 0x9b, 0x45, 0x3c, 0x1d, 0x30, 0x41, 0x34, 0x13,
0x42, 0x2d, 0x70, 0x64, 0x83, 0xbf, 0xa0, 0xf9, 0x8a, 0x5e, 0x88, 0x62, 0x66, 0xe7,
0xae, 0x68, 0x6d, 0x69, 0x6d, 0x65, 0x54, 0x79, 0x70, 0x65, 0x6a, 0x74, 0x65, 0x78,
0x74, 0x2f, 0x70, 0x6c, 0x61, 0x69, 0x6e, 0x64, 0x73, 0x69, 0x7a, 0x65, 0x00,
];
let deserialized = serde_ipld_dagcbor::from_slice::<BlobRef>(dag_cbor.as_slice())
.expect("failed to deserialize blob-ref");
assert_eq!(
deserialized,
BlobRef::Typed(TypedBlobRef::Blob(Blob {
r#ref: CidLink::try_from(
"bafkreibme22gw2h7y2h7tg2fhqotaqjucnbc24deqo72b6mkl2egezxhvy"
)
.expect("failed to create cid-link"),
mime_type: "text/plain".into(),
size: 0,
}))
);
}
}