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Control backend choice of flate2

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This commit is contained in:
Alexander Bulaev 2018-05-19 20:03:23 +03:00
parent 806147ac9e
commit fee626ba59
8 changed files with 41 additions and 24 deletions
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2
.travis.yml
View file

@ -14,6 +14,8 @@ notifications:
script:
- cargo test
- cargo test --no-default-features
- cargo test --no-default-features --features "deflate-zlib"
- cargo test --no-default-features --features "deflate-miniz"
- cargo doc --no-deps
- rustdoc --test README.md -L target/debug

6
Cargo.toml
View file

@ -12,7 +12,7 @@ Library to support the reading and writing of zip files.
"""
[dependencies]
flate2 = { version = "1.0", default-features = false, features = ["rust_backend"], optional = true}
flate2 = { version = "1.0", default-features = false, optional = true }
time = "0.1"
podio = "0.1"
msdos_time = "0.1"
@ -22,5 +22,7 @@ bzip2 = { version = "0.3", optional = true }
walkdir = "1.0"
[features]
deflate = ["flate2"]
deflate = ["flate2", "flate2/rust_backend"]
deflate-miniz = ["flate2", "flate2/miniz-sys"]
deflate-zlib = ["flate2", "flate2/zlib"]
default = ["bzip2", "deflate"]

12
README.md
View file

@ -43,6 +43,18 @@ Without the default features:
zip = { version = "0.3", default-features = false }
```
You can further control the backend of `deflate` compression method with these features:
* `deflate` (enabled by default) uses [miniz_oxide](https://github.com/Frommi/miniz_oxide)
* `deflate-miniz` uses [miniz](https://github.com/richgel999/miniz)
* `deflate-zlib` uses zlib
For example:
```toml
[dependencies]
zip = { version = "0.3", features = ["deflate-zlib"], default-features = false }
```
Examples
--------

1
appveyor.yml
View file

@ -42,3 +42,4 @@ build: false
test_script:
- cargo test
- cargo test --no-default-features
- cargo test --no-default-features --features "deflate-miniz"

14
src/compression.rs
View file

@ -9,7 +9,7 @@ pub enum CompressionMethod
/// The file is stored (no compression)
Stored,
/// The file is Deflated
#[cfg(feature = "deflate")]
#[cfg(feature = "flate2")]
Deflated,
/// File is compressed using BZIP2 algorithm
#[cfg(feature = "bzip2")]
@ -23,7 +23,7 @@ impl CompressionMethod {
pub fn from_u16(val: u16) -> CompressionMethod {
match val {
0 => CompressionMethod::Stored,
#[cfg(feature = "deflate")]
#[cfg(feature = "flate2")]
8 => CompressionMethod::Deflated,
#[cfg(feature = "bzip2")]
12 => CompressionMethod::Bzip2,
@ -35,7 +35,7 @@ impl CompressionMethod {
pub fn to_u16(self) -> u16 {
match self {
CompressionMethod::Stored => 0,
#[cfg(feature = "deflate")]
#[cfg(feature = "flate2")]
CompressionMethod::Deflated => 8,
#[cfg(feature = "bzip2")]
CompressionMethod::Bzip2 => 12,
@ -65,22 +65,22 @@ mod test {
}
}
#[cfg(all(not(feature = "bzip2"), feature = "deflate"))]
#[cfg(all(not(feature = "bzip2"), feature = "flate2"))]
fn methods() -> Vec<CompressionMethod> {
vec![CompressionMethod::Stored, CompressionMethod::Deflated]
}
#[cfg(all(not(feature = "deflate"), feature = "bzip2"))]
#[cfg(all(not(feature = "flate2"), feature = "bzip2"))]
fn methods() -> Vec<CompressionMethod> {
vec![CompressionMethod::Stored, CompressionMethod::Bzip2]
}
#[cfg(all(feature = "bzip2", feature = "deflate"))]
#[cfg(all(feature = "bzip2", feature = "flate2"))]
fn methods() -> Vec<CompressionMethod> {
vec![CompressionMethod::Stored, CompressionMethod::Deflated, CompressionMethod::Bzip2]
}
#[cfg(all(not(feature = "bzip2"), not(feature = "deflate")))]
#[cfg(all(not(feature = "bzip2"), not(feature = "flate2")))]
fn methods() -> Vec<CompressionMethod> {
vec![CompressionMethod::Stored]
}

2
src/lib.rs
View file

@ -4,7 +4,7 @@
#[cfg(feature = "bzip2")]
extern crate bzip2;
#[cfg(feature = "deflate")]
#[cfg(feature = "flate2")]
extern crate flate2;
extern crate msdos_time;
extern crate podio;

10
src/read.rs
View file

@ -13,9 +13,9 @@ use types::{ZipFileData, System};
use cp437::FromCp437;
use msdos_time::{TmMsDosExt, MsDosDateTime};
#[cfg(feature = "deflate")]
#[cfg(feature = "flate2")]
use flate2;
#[cfg(feature = "deflate")]
#[cfg(feature = "flate2")]
use flate2::read::DeflateDecoder;
#[cfg(feature = "bzip2")]
@ -77,7 +77,7 @@ pub struct ZipArchive<R: Read + io::Seek>
enum ZipFileReader<'a> {
Stored(Crc32Reader<io::Take<&'a mut Read>>),
#[cfg(feature = "deflate")]
#[cfg(feature = "flate2")]
Deflated(Crc32Reader<flate2::read::DeflateDecoder<io::Take<&'a mut Read>>>),
#[cfg(feature = "bzip2")]
Bzip2(Crc32Reader<BzDecoder<io::Take<&'a mut Read>>>),
@ -254,7 +254,7 @@ impl<R: Read+io::Seek> ZipArchive<R>
limit_reader,
data.crc32))
},
#[cfg(feature = "deflate")]
#[cfg(feature = "flate2")]
CompressionMethod::Deflated =>
{
let deflate_reader = DeflateDecoder::new(limit_reader);
@ -397,7 +397,7 @@ impl<'a> ZipFile<'a> {
fn get_reader(&mut self) -> &mut Read {
match self.reader {
ZipFileReader::Stored(ref mut r) => r as &mut Read,
#[cfg(feature = "deflate")]
#[cfg(feature = "flate2")]
ZipFileReader::Deflated(ref mut r) => r as &mut Read,
#[cfg(feature = "bzip2")]
ZipFileReader::Bzip2(ref mut r) => r as &mut Read,

18
src/write.rs
View file

@ -13,9 +13,9 @@ use time;
use podio::{WritePodExt, LittleEndian};
use msdos_time::TmMsDosExt;
#[cfg(feature = "deflate")]
#[cfg(feature = "flate2")]
use flate2;
#[cfg(feature = "deflate")]
#[cfg(feature = "flate2")]
use flate2::write::DeflateEncoder;
#[cfg(feature = "bzip2")]
@ -29,7 +29,7 @@ enum GenericZipWriter<W: Write + io::Seek>
{
Closed,
Storer(W),
#[cfg(feature = "deflate")]
#[cfg(feature = "flate2")]
Deflater(DeflateEncoder<W>),
#[cfg(feature = "bzip2")]
Bzip2(BzEncoder<W>),
@ -83,7 +83,7 @@ pub struct FileOptions {
}
impl FileOptions {
#[cfg(feature = "deflate")]
#[cfg(feature = "flate2")]
/// Construct a new FileOptions object
pub fn default() -> FileOptions {
FileOptions {
@ -93,7 +93,7 @@ impl FileOptions {
}
}
#[cfg(not(feature = "deflate"))]
#[cfg(not(feature = "flate2"))]
/// Construct a new FileOptions object
pub fn default() -> FileOptions {
FileOptions {
@ -349,7 +349,7 @@ impl<W: Write+io::Seek> GenericZipWriter<W>
let bare = match mem::replace(self, GenericZipWriter::Closed)
{
GenericZipWriter::Storer(w) => w,
#[cfg(feature = "deflate")]
#[cfg(feature = "flate2")]
GenericZipWriter::Deflater(w) => try!(w.finish()),
#[cfg(feature = "bzip2")]
GenericZipWriter::Bzip2(w) => try!(w.finish()),
@ -359,7 +359,7 @@ impl<W: Write+io::Seek> GenericZipWriter<W>
*self = match compression
{
CompressionMethod::Stored => GenericZipWriter::Storer(bare),
#[cfg(feature = "deflate")]
#[cfg(feature = "flate2")]
CompressionMethod::Deflated => GenericZipWriter::Deflater(DeflateEncoder::new(bare, flate2::Compression::default())),
#[cfg(feature = "bzip2")]
CompressionMethod::Bzip2 => GenericZipWriter::Bzip2(BzEncoder::new(bare, bzip2::Compression::Default)),
@ -372,7 +372,7 @@ impl<W: Write+io::Seek> GenericZipWriter<W>
fn ref_mut(&mut self) -> Option<&mut Write> {
match *self {
GenericZipWriter::Storer(ref mut w) => Some(w as &mut Write),
#[cfg(feature = "deflate")]
#[cfg(feature = "flate2")]
GenericZipWriter::Deflater(ref mut w) => Some(w as &mut Write),
#[cfg(feature = "bzip2")]
GenericZipWriter::Bzip2(ref mut w) => Some(w as &mut Write),
@ -401,7 +401,7 @@ impl<W: Write+io::Seek> GenericZipWriter<W>
fn current_compression(&self) -> Option<CompressionMethod> {
match *self {
GenericZipWriter::Storer(..) => Some(CompressionMethod::Stored),
#[cfg(feature = "deflate")]
#[cfg(feature = "flate2")]
GenericZipWriter::Deflater(..) => Some(CompressionMethod::Deflated),
#[cfg(feature = "bzip2")]
GenericZipWriter::Bzip2(..) => Some(CompressionMethod::Bzip2),