Enum CompressionMethod

#[non_exhaustive]pub enum CompressionMethod {
    Stored,
    Deflated,
    Deflate64,
    Bzip2,
    Aes,
    Zstd,
    Lzma,
    Xz,
    Ppmd,
    Unsupported(u16),
}

Expand description

Identifies the storage format used to compress a file within a ZIP archive.

Each file’s compression method is stored alongside it, allowing the contents to be read without context.

When creating ZIP files, you may choose the method to use with crate::write::FileOptions::compression_method

Variants (Non-exhaustive)§

This enum is marked as non-exhaustive

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Stored

Store the file as is

Deflated

Compress the file using Deflate

Deflate64

Compress the file using Deflate64. Decoding deflate64 is supported but encoding deflate64 is not supported.

Bzip2

Compress the file using BZIP2

Aes

Encrypted using AES.

The actual compression method has to be taken from the AES extra data field or from ZipFileData.

Zstd

Compress the file using ZStandard

Lzma

Compress the file using LZMA

Xz

Compress the file using XZ

Ppmd

Compress the file using PPMd

Unsupported(u16)

👎Deprecated since 0.5.7: use the constants instead

Unsupported compression method

Implementations§

impl CompressionMethod

All compression methods defined for the ZIP format

pub const STORE: CompressionMethod = CompressionMethod::Stored

pub const SHRINK: CompressionMethod

Legacy compression method (enable feature legacy-zip to get support)

pub const REDUCE_1: CompressionMethod

Legacy compression method (enable feature legacy-zip to get support)

pub const REDUCE_2: CompressionMethod

Legacy compression method (enable feature legacy-zip to get support)

pub const REDUCE_3: CompressionMethod

Legacy compression method (enable feature legacy-zip to get support)

pub const REDUCE_4: CompressionMethod

Legacy compression method (enable feature legacy-zip to get support)

pub const IMPLODE: CompressionMethod

Legacy compression method (enable feature legacy-zip to get support)

pub const DEFLATE: CompressionMethod = CompressionMethod::Deflated

pub const DEFLATE64: CompressionMethod = CompressionMethod::Deflate64

pub const PKWARE_IMPLODE: CompressionMethod

pub const BZIP2: CompressionMethod = CompressionMethod::Bzip2

pub const LZMA: CompressionMethod = CompressionMethod::Lzma

pub const IBM_ZOS_CMPSC: CompressionMethod

pub const IBM_TERSE: CompressionMethod

pub const ZSTD_DEPRECATED: CompressionMethod

pub const ZSTD: CompressionMethod = CompressionMethod::Zstd

pub const MP3: CompressionMethod

pub const XZ: CompressionMethod = CompressionMethod::Xz

pub const JPEG: CompressionMethod

pub const WAVPACK: CompressionMethod

pub const PPMD: CompressionMethod = CompressionMethod::Ppmd

pub const AES: CompressionMethod = CompressionMethod::Aes

pub const DEFAULT: CompressionMethod = CompressionMethod::Deflated

impl CompressionMethod

pub const fn from_u16(val: u16) -> CompressionMethod

👎Deprecated since 0.5.7: use a constant to construct a compression method

Converts a u16 to its corresponding CompressionMethod

pub const fn to_u16(self) -> u16

👎Deprecated since 0.5.7: to match on other compression methods, use a constant

Converts a CompressionMethod to a u16

Trait Implementations§

impl Clone for CompressionMethod

fn clone(&self) -> CompressionMethod

Returns a duplicate of the value. Read more

1.0.0 · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more

impl Debug for CompressionMethod

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

Formats the value using the given formatter. Read more

impl Default for CompressionMethod

fn default() -> CompressionMethod

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

impl Display for CompressionMethod

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

Formats the value using the given formatter. Read more

impl PartialEq for CompressionMethod

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

Tests for self and other values to be equal, and is used by ==.

1.0.0 · Source§

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for CompressionMethod

impl Eq for CompressionMethod

impl StructuralPartialEq for CompressionMethod

Auto Trait Implementations§

impl Freeze for CompressionMethod

impl RefUnwindSafe for CompressionMethod

impl Send for CompressionMethod

impl Sync for CompressionMethod

impl Unpin for CompressionMethod

impl UnwindSafe for CompressionMethod

Blanket Implementations§

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

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Gets the TypeId of self. Read more

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)

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The alignment of pointer.

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Read this value from the supplied reader. Same as ReadEndian::read_from_little_endian().

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Read this value from the supplied reader. Same as ReadEndian::read_from_big_endian().

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impl<V, T> VZip<V> for T
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fn vzip(self) -> V

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