Struct nix_compat::store_path::StorePath

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pub struct StorePath<S>
where S: Eq + PartialEq,
{ digest: [u8; 20], name: S, }
Expand description

Represents a path in the Nix store (a direct child of STORE_DIR).

It consists of a digest (20 bytes), and a name, which is a string. The name may only contain ASCII alphanumeric, or one of the following characters: -, _, ., +, ?, =. The name is usually used to describe the pname and version of a package. Derivation paths can also be represented as store paths, their names just end with the .drv prefix.

A StorePath does not encode any additional subpath “inside” the store path.

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§digest: [u8; 20]§name: S

Implementations§

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impl<S> StorePath<S>
where S: Eq + Deref<Target = 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>( s: &'a str, ) -> Result<(Self, &'a Path), Error>
where S: From<&'a str>,

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
where S: Display,

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: Eq + Deref<Target = str>,

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

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impl<S> Clone for StorePath<S>
where S: Eq + PartialEq + Clone,

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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 for StorePath<S>
where S: Eq + PartialEq + Debug,

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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: Eq + Deref<Target = 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: Display + Eq,

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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<'a, 'b: 'a> FromStr for StorePath<String>

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fn from_str(s: &str) -> Result<Self, Self::Err>

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

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type Err = Error

The associated error which can be returned from parsing.
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impl<S> Hash for StorePath<S>
where S: Eq + PartialEq + Hash,

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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> Ord for StorePath<S>
where S: PartialEq + Eq,

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 + PartialOrd,

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

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

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

This method 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: PartialEq + Eq,

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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

This method 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

This method 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

This method 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

This method 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: Eq + Deref<Target = str> + Display,

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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: Eq + PartialEq + Eq,

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impl<S> StructuralPartialEq for StorePath<S>
where S: Eq + PartialEq,

Auto Trait Implementations§

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impl<S> Freeze for StorePath<S>
where S: Freeze,

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impl<S> RefUnwindSafe for StorePath<S>
where S: RefUnwindSafe,

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impl<S> Send for StorePath<S>
where S: Send,

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impl<S> Sync for StorePath<S>
where S: Sync,

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impl<S> Unpin for StorePath<S>
where S: Unpin,

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impl<S> UnwindSafe for StorePath<S>
where S: UnwindSafe,

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> Same for T

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type Output = T

Should always be Self
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T> ToString for T
where T: Display + ?Sized,

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default fn to_string(&self) -> String

Converts the given value to a String. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more
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impl<T> DeserializeOwned for T
where T: for<'de> Deserialize<'de>,