Enum zip::CompressionMethod

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

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)

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

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: Self = CompressionMethod::Stored

pub const SHRINK: Self = _

pub const REDUCE_1: Self = _

pub const REDUCE_2: Self = _

pub const REDUCE_3: Self = _

pub const REDUCE_4: Self = _

pub const IMPLODE: Self = _

pub const DEFLATE: Self = CompressionMethod::Deflated

pub const DEFLATE64: Self = CompressionMethod::Deflate64

pub const PKWARE_IMPLODE: Self = _

pub const BZIP2: Self = CompressionMethod::Bzip2

pub const LZMA: Self = CompressionMethod::Lzma

pub const IBM_ZOS_CMPSC: Self = _

pub const IBM_TERSE: Self = _

pub const ZSTD_DEPRECATED: Self = _

pub const ZSTD: Self = CompressionMethod::Zstd

pub const MP3: Self = _

pub const XZ: Self = _

pub const JPEG: Self = _

pub const WAVPACK: Self = _

pub const PPMD: Self = _

pub const AES: Self = CompressionMethod::Aes

impl CompressionMethod

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

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

Converts an 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 copy of the value.

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

Performs copy-assignment from source.

impl Debug for CompressionMethod

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

Formats the value using the given formatter.

impl Default for CompressionMethod

fn default() -> Self

Returns the “default value” for a type.

impl Display for CompressionMethod

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

Formats the value using the given formatter.

impl PartialEq for CompressionMethod

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

This method tests for self and other values to be equal, and is used by ==.

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.

impl Copy for CompressionMethod

impl Eq for CompressionMethod

impl StructuralPartialEq for CompressionMethod