Compression

ssi_status

Struct Compression 

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pub struct Compression(/* private fields */);
Expand description

When compressing data, the compression level can be specified by a value in this struct.

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impl Compression

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pub const fn new(level: u32) -> Compression

Creates a new description of the compression level with an explicitly specified integer.

The integer here is typically on a scale of 0-9 where 0 means “no compression” and 9 means “take as long as you’d like”.

§Backend differences

The miniz_oxide backend for flate2 does not support level 0 or Compression::none(). Instead it interprets them as the default compression level, which is quite slow. Compression::fast() should be used instead.

miniz_oxide also supports a non-compliant compression level 10. It is even slower and may result in higher compression, but only miniz_oxide will be able to read the data compressed with level 10. Do not use level 10 if you need other software to be able to read it!

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pub const fn none() -> Compression

No compression is to be performed, this may actually inflate data slightly when encoding.

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pub const fn fast() -> Compression

Optimize for the best speed of encoding.

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pub const fn best() -> Compression

Optimize for the size of data being encoded.

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pub fn level(&self) -> u32

Returns an integer representing the compression level, typically on a scale of 0-9. See new for details about compression levels.

Trait Implementations§

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impl Clone for Compression

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fn clone(&self) -> Compression

Returns a duplicate 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 Debug for Compression

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

Formats the value using the given formatter. Read more
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impl Default for Compression

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fn default() -> Compression

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

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fn eq(&self, other: &Compression) -> 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 Copy for Compression

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impl Eq for Compression

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impl StructuralPartialEq for Compression

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