Enum cdrs::compression::Compression [−][src]
pub enum Compression { Lz4, Snappy, None, }
Enum which represents a type of compression. Only non-startup frame's body can be compressen.
Variants
Lz4
lz4 compression
Snappy
snappy compression
None
Non compression
Methods
impl Compression
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impl Compression
pub fn encode(&self, bytes: Vec<u8>) -> Result<Vec<u8>, CompressionError>
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pub fn encode(&self, bytes: Vec<u8>) -> Result<Vec<u8>, CompressionError>
It encodes bytes
basing on type of Compression
..
Examples
use cdrs::compression::Compression; let snappy_compression = Compression::Snappy; let bytes = String::from("Hello World").into_bytes().to_vec(); let encoded = snappy_compression.encode(bytes.clone()).unwrap(); assert_eq!(snappy_compression.decode(encoded).unwrap(), bytes);
pub fn decode(&self, bytes: Vec<u8>) -> Result<Vec<u8>, CompressionError>
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pub fn decode(&self, bytes: Vec<u8>) -> Result<Vec<u8>, CompressionError>
It decodes bytes
basing on type of compression.
Examples
use cdrs::compression::Compression; let lz4_compression = Compression::Lz4; let bytes = String::from("Hello World").into_bytes().to_vec(); let encoded = lz4_compression.encode(bytes.clone()).unwrap(); let len = encoded.len() as u8; let mut input = vec![0, 0, 0, len]; input.extend_from_slice(encoded.as_slice()); assert_eq!(lz4_compression.decode(input).unwrap(), bytes);
pub fn as_str(&self) -> Option<&'static str>
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pub fn as_str(&self) -> Option<&'static str>
It transforms compression method into a &str
.
Trait Implementations
impl Debug for Compression
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impl Debug for Compression
fn fmt(&self, f: &mut Formatter) -> Result
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fn fmt(&self, f: &mut Formatter) -> Result
Formats the value using the given formatter. Read more
impl PartialEq for Compression
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impl PartialEq for Compression
fn eq(&self, other: &Compression) -> bool
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fn eq(&self, other: &Compression) -> bool
This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, other: &Rhs) -> bool
1.0.0[src]
fn ne(&self, other: &Rhs) -> bool
This method tests for !=
.
impl Clone for Compression
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impl Clone for Compression
fn clone(&self) -> Compression
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fn clone(&self) -> Compression
Returns a copy of the value. Read more
fn clone_from(&mut self, source: &Self)
1.0.0[src]
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source
. Read more
impl Copy for Compression
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impl Copy for Compression
impl Eq for Compression
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impl Eq for Compression
impl Ord for Compression
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impl Ord for Compression
fn cmp(&self, other: &Compression) -> Ordering
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fn cmp(&self, other: &Compression) -> Ordering
This method returns an Ordering
between self
and other
. Read more
fn max(self, other: Self) -> Self
1.21.0[src]
fn max(self, other: Self) -> Self
Compares and returns the maximum of two values. Read more
fn min(self, other: Self) -> Self
1.21.0[src]
fn min(self, other: Self) -> Self
Compares and returns the minimum of two values. Read more
impl PartialOrd for Compression
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impl PartialOrd for Compression
fn partial_cmp(&self, other: &Compression) -> Option<Ordering>
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fn partial_cmp(&self, other: &Compression) -> Option<Ordering>
This method returns an ordering between self
and other
values if one exists. Read more
fn lt(&self, other: &Rhs) -> bool
1.0.0[src]
fn lt(&self, other: &Rhs) -> bool
This method tests less than (for self
and other
) and is used by the <
operator. Read more
fn le(&self, other: &Rhs) -> bool
1.0.0[src]
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
fn gt(&self, other: &Rhs) -> bool
1.0.0[src]
fn gt(&self, other: &Rhs) -> bool
This method tests greater than (for self
and other
) and is used by the >
operator. Read more
fn ge(&self, other: &Rhs) -> bool
1.0.0[src]
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
impl From<String> for Compression
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impl From<String> for Compression
fn from(compression_string: String) -> Compression
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fn from(compression_string: String) -> Compression
It converts String
into Compression
. If string is neither lz4
nor snappy
then
Compression::None
will be returned
impl<'a> From<&'a str> for Compression
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impl<'a> From<&'a str> for Compression
fn from(compression_str: &'a str) -> Compression
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fn from(compression_str: &'a str) -> Compression
It converts str
into Compression
. If string is neither lz4
nor snappy
then
Compression::None
will be returned
Auto Trait Implementations
impl Send for Compression
impl Send for Compression
impl Sync for Compression
impl Sync for Compression