Struct ContentHash 

pub struct ContentHash(/* private fields */);

A stable, portable content hash: BLAKE3 over text with \r\n and lone \r normalised to \n.

Displayed and serialised as blake3:<64 hex chars>, so the algorithm is self-describing if it ever changes.

use sealmap_model::ContentHash;

let unix = ContentHash::of_text("fn main() {}\n");
let windows = ContentHash::of_text("fn main() {}\r\n");
assert_eq!(unix, windows);
assert!(unix.to_string().starts_with("blake3:"));

Implementations

impl ContentHash

pub fn of_text(text: &str) -> Self

Hash text after normalising line endings.

pub fn of_bytes(bytes: &[u8]) -> Self

Hash raw bytes with no normalisation.

pub fn parse(s: &str) -> Option<Self>

Parse a previously displayed hash (blake3:<hex>).

Returns None if the prefix or the hex payload is malformed.

pub fn as_str(&self) -> &str

The full blake3:<hex> string.

pub fn short(&self, n: usize) -> &str

The first n hex characters of the digest, handy for short stable ids.

Trait Implementations

impl Clone for ContentHash

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ContentHash

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ContentHash

fn deserialize<D: Deserializer<'de>>(deserializer: D) -> Result<Self, D::Error>

Deserialize this value from the given Serde deserializer.

impl Display for ContentHash

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

Formats the value using the given formatter.

impl Eq for ContentHash

impl Hash for ContentHash

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, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for ContentHash

fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other.

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

where Self: Sized,

Compares and returns the maximum of two values.

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

where Self: Sized,

Compares and returns the minimum of two values.

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

where Self: Sized,

Restrict a value to a certain interval.

fn clamp_to<R>(self, range: R) -> Self

where Self: Sized, R: ClampBounds<Self>,

🔬This is a nightly-only experimental API. (clamp_to)

Restrict a value to a certain range.

impl PartialEq for ContentHash

fn eq(&self, other: &Self) -> bool

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for ContentHash

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

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

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

Tests less than (for self and other) and is used by the < operator.

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

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

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

Tests greater than (for self and other) and is used by the > operator.

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

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

impl Serialize for ContentHash

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for ContentHash