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GenericPlugin

Struct GenericPlugin 

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pub struct GenericPlugin;
Expand description

Archive any tree as opaque blobs. Extracts no metadata, claims no extension, contributes no Arrow column.

The type_id matters even though nothing is extracted: it is what stops a generic archive from being indistinguishable from a cargo one, and what makes znippy decompress --type generic mean something.

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impl GenericPlugin

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pub fn new() -> Self

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impl ArchiveTypePlugin for GenericPlugin

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fn extract_metadata(&self, _path: &str, _data: &[u8]) -> Option<ExtensionRow>

Unreachable through the registry (nothing matches), and None if a caller invokes it directly: there is no metadata to claim.

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fn spec(&self) -> &HandlerSpec

The handler’s static description.
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fn run_command(&self, cmd: &str, args: &[String]) -> Result<()>

Dispatch a subcommand. Default: the shared coords command.
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fn matches_path(&self, path: &str) -> bool

Return true if this plugin wants to handle this file: the spec’s Claim. Override it only to make the same decision faster; the register’s tests hold every handler to spec().claims.
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fn schema_fields(&self) -> Vec<Field>

The Arrow columns this handler contributes. Default: the spec’s fields.
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fn name(&self) -> &str

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fn type_id(&self) -> i8

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fn meta(&self) -> HandlerMeta

Owned discovery record, derived from the spec.
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impl Default for GenericPlugin

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fn default() -> Self

Returns the “default value” for a type. Read more

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Allocation for T
where T: RefUnwindSafe + Send + Sync,

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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<ST, DT> CastableFrom<ST, Initialized, Initialized> for DT
where ST: ?Sized, DT: ?Sized,

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impl<ST, DT> CastableFrom<ST, Uninit, Uninit> for DT
where ST: ?Sized, DT: ?Sized,

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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, 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> Read<Exclusive, BecauseExclusive> for T
where T: ?Sized,

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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = !

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

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.