nix_compat::store_path

Type Alias StorePathRef

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pub type StorePathRef<'a> = StorePath<&'a str>;
Expand description

Like StorePath, but without a heap allocation for the name. Used by StorePath for parsing.

Aliased Type§

struct StorePathRef<'a> {
    digest: [u8; 20],
    name: &'a str,
}

Fields§

§digest: [u8; 20]§name: &'a str

Implementations

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impl<S> StorePath<S>
where S: AsRef<str>,

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pub fn digest(&self) -> &[u8; 20]

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pub fn name(&self) -> &S

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pub fn as_ref(&self) -> StorePathRef<'_>

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pub fn to_owned(&self) -> StorePath<String>

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pub fn from_bytes<'a>(s: &'a [u8]) -> Result<Self, Error>
where S: From<&'a str>,

Construct a StorePath by passing the $digest-$name string that comes after STORE_DIR_WITH_SLASH.

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pub fn from_name_and_digest<'a>( name: &'a str, digest: &[u8], ) -> Result<Self, Error>
where S: From<&'a str>,

Construct a StorePathRef from a name and digest. The name is validated, and the digest checked for size.

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pub fn from_name_and_digest_fixed<'a>( name: &'a str, digest: [u8; 20], ) -> Result<Self, Error>
where S: From<&'a str>,

Construct a StorePathRef from a name and digest of correct length. The name is validated.

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pub fn from_absolute_path<'a>(s: &'a [u8]) -> Result<Self, Error>
where S: From<&'a str>,

Construct a StorePathRef from an absolute store path string. This is equivalent to calling StorePathRef::from_bytes, but stripping the STORE_DIR_WITH_SLASH prefix before.

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pub fn from_absolute_path_full<'a, P>( path: &'a P, ) -> Result<(Self, &'a Path), Error>
where S: From<&'a str>, P: AsRef<Path> + ?Sized,

Decompose a string into a StorePath and a [PathBuf] containing the rest of the path, or an error.

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pub fn to_absolute_path(&self) -> String

Returns an absolute store path string. That is just the string representation, prefixed with the store prefix (STORE_DIR_WITH_SLASH),

Trait Implementations

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impl<S> AtermWriteable for StorePath<S>
where S: AsRef<str>,

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fn aterm_write(&self, writer: &mut impl Write) -> Result<()>

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impl<S: Clone> Clone for StorePath<S>

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

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<S: Debug> Debug for StorePath<S>

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

Formats the value using the given formatter. Read more
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impl<'a, 'de: 'a, S> Deserialize<'de> for StorePath<S>
where S: AsRef<str> + From<&'a str>,

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

Deserialize this value from the given Serde deserializer. Read more
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impl<S> Display for StorePath<S>
where S: AsRef<str>,

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

The string representation of a store path starts with a digest (20 bytes), crate::nixbase32-encoded, followed by a -, and ends with the name.

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impl<S> Hash for StorePath<S>
where S: AsRef<str>,

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

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl<S> NixSerialize for StorePath<S>
where S: AsRef<str>,

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fn serialize<W>( &self, writer: &mut W, ) -> impl Future<Output = Result<(), W::Error>> + Send
where W: NixWrite,

Write a value to the writer.
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impl<S> Ord for StorePath<S>
where S: AsRef<str>,

StorePaths are sorted by their reverse digest to match the sorting order of the nixbase32-encoded string.

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

This method returns an Ordering between self and other. Read more
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fn max(self, other: Self) -> Self
where Self: Sized,

Compares and returns the maximum of two values. Read more
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fn min(self, other: Self) -> Self
where Self: Sized,

Compares and returns the minimum of two values. Read more
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fn clamp(self, min: Self, max: Self) -> Self
where Self: Sized,

Restrict a value to a certain interval. Read more
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impl<S> PartialEq for StorePath<S>
where S: AsRef<str>,

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

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<S> PartialOrd for StorePath<S>
where S: AsRef<str>,

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

This method returns an ordering between self and other values if one exists. Read more
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fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator. Read more
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fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator. Read more
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fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator. Read more
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fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator. Read more
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impl<S> Serialize for StorePath<S>
where S: AsRef<str>,

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fn serialize<SR>(&self, serializer: SR) -> Result<SR::Ok, SR::Error>
where SR: Serializer,

Serialize this value into the given Serde serializer. Read more
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impl<S> Eq for StorePath<S>
where S: AsRef<str>,