Struct sp_cid::CidGeneric

pub struct CidGeneric<const S: usize> { /* fields omitted */ }

Representation of a CID.

The generic is about the allocated size of the multihash.

Implementations

impl<const S: usize> Cid<S>

pub fn new_v0(hash: Multihash<S>) -> Result<Self>

Create a new CIDv0.

pub fn new_v1(codec: Codec, hash: Multihash<S>) -> Self

Create a new CIDv1.

pub fn new(version: Version, codec: Codec, hash: Multihash<S>) -> Result<Self>

Create a new CID.

pub fn version(&self) -> Version

Returns the cid version.

pub fn codec(&self) -> u64

Returns the cid codec.

pub fn hash(&self) -> &Multihash<S>

Returns the cid multihash.

pub fn read_bytes(r: &mut ByteCursor) -> Result<Self>

Reads the bytes from a byte stream.

pub fn write_bytes(&self, w: &mut ByteCursor) -> Result<()>

Writes the bytes to a byte stream.

pub fn to_bytes(&self) -> Vec<u8>

Returns the encoded bytes of the Cid.

pub fn to_string_of_base(&self, base: Base) -> Result<String>

Convert CID into a multibase encoded string

Example

use multibase::Base;
use sp_cid::{
  codec,
  Cid,
};
use sp_multihash::{
  Code,
  MultihashDigest,
};

let cid = Cid::new_v1(codec::RAW, Code::Sha2_256.digest(b"foo"));
let encoded = cid.to_string_of_base(Base::Base64).unwrap();
assert_eq!(encoded, "mAVUSICwmtGto/8aP+ZtFPB0wQTQTQi1wZIO/oPmKXohiZueu");

Trait Implementations

impl<const S: usize> Clone for Cid<S>

fn clone(&self) -> Cid<S>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<const S: usize> Debug for Cid<S>

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

Formats the value using the given formatter.

impl<const S: usize> Default for Cid<S>

fn default() -> Self

Returns the “default value” for a type.

impl<const S: usize> Display for Cid<S>

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

Formats the value using the given formatter.

impl<const S: usize> From<&'_ Cid<S>> for Cid<S>

fn from(cid: &Cid<S>) -> Self

Performs the conversion.

impl<'a, const S: usize> From<&'a Cid<S>> for Cow<'a, Cid<S>>

fn from(from: &'a Cid<S>) -> Self

Performs the conversion.

impl<const S: usize> From<Cid<S>> for Vec<u8>

fn from(cid: Cid<S>) -> Self

Performs the conversion.

impl<const S: usize> From<Cid<S>> for String

fn from(cid: Cid<S>) -> Self

Performs the conversion.

impl<'a, const S: usize> From<Cid<S>> for Cow<'a, Cid<S>>

fn from(from: Cid<S>) -> Self

Performs the conversion.

impl<const S: usize> FromStr for Cid<S>

type Err = Error

The associated error which can be returned from parsing.

fn from_str(cid_str: &str) -> Result<Self>

Parses a string s to return a value of this type.

impl<const S: usize> Hash for Cid<S>

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, 

Feeds a slice of this type into the given Hasher.

impl<const S: usize> Ord for Cid<S>

fn cmp(&self, other: &Cid<S>) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

Restrict a value to a certain interval.

impl<const S: usize> PartialEq<Cid<S>> for Cid<S>

fn eq(&self, other: &Cid<S>) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Cid<S>) -> bool

This method tests for !=.

impl<const S: usize> PartialOrd<Cid<S>> for Cid<S>

fn partial_cmp(&self, other: &Cid<S>) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl<const S: usize> TryFrom<&'_ [u8]> for Cid<S>

type Error = Error

The type returned in the event of a conversion error.

fn try_from(bytes: &[u8]) -> Result<Self>

Performs the conversion.

impl<const S: usize> TryFrom<&'_ str> for Cid<S>

type Error = Error

The type returned in the event of a conversion error.

fn try_from(cid_str: &str) -> Result<Self>

Performs the conversion.

impl<const S: usize> TryFrom<String> for Cid<S>

type Error = Error

The type returned in the event of a conversion error.

fn try_from(cid_str: String) -> Result<Self>

Performs the conversion.

impl<const S: usize> TryFrom<Vec<u8, Global>> for Cid<S>

type Error = Error

The type returned in the event of a conversion error.

fn try_from(bytes: Vec<u8>) -> Result<Self>

Performs the conversion.

impl<const S: usize> Copy for Cid<S>

impl<const S: usize> Eq for Cid<S>

impl<const S: usize> StructuralEq for Cid<S>

impl<const S: usize> StructuralPartialEq for Cid<S>