Struct CidComponents 

pub struct CidComponents {
    pub version: u8,
    pub codec: u8,
    pub hash_function: u8,
    pub hash_length: u8,
    pub digest: Vec<u8>,
}

Parsed components of an IPFS Content Identifier (CID).

A CID encodes four header fields followed by the raw hash digest:

┌─────────┬───────┬──────────────┬────────────┬──────────────┐
│ version │ codec │ hash_function│ hash_length│   digest     │
│  (1 B)  │ (1 B) │    (1 B)     │   (1 B)    │ (N bytes)    │
└─────────┴───────┴──────────────┴────────────┴──────────────┘

Use parse_cid to obtain this from a multibase string, or decode_cid to obtain it from raw bytes.

Example

use cow_app_data::{appdata_hex_to_cid, parse_cid};

let hex = "0xabcdef1234567890abcdef1234567890abcdef1234567890abcdef1234567890";
let cid = appdata_hex_to_cid(hex).unwrap();
let components = parse_cid(&cid).unwrap();
assert_eq!(components.version, 0x01); // CIDv1
assert_eq!(components.codec, 0x55); // raw multicodec
assert_eq!(components.hash_function, 0x1b); // keccak256
assert_eq!(components.hash_length, 0x20); // 32 bytes
assert_eq!(components.digest.len(), 32);

Fields

version: u8

CID version (e.g. 1 for CIDv1).

codec: u8

Multicodec code (e.g. 0x55 for raw, 0x70 for dag-pb).

hash_function: u8

Multihash function code (e.g. 0x1b for keccak256, 0x12 for sha2-256).

hash_length: u8

Hash digest length in bytes (typically 32).

digest: Vec<u8>

The raw hash digest bytes.

Trait Implementations

impl Clone for CidComponents

fn clone(&self) -> CidComponents

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for CidComponents

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.