delta/go-git.git/src/compress/zlib, branch dev.inline

compress/gzip, compress/zlib: add HuffmanOnly as compression levels.

2016-10-20T23:11:05+00:00

This exposes HuffmanOnly in zlib and gzip packages, which is currently
unavailable.

Change-Id: If5d103bbc8b5fce2f5d740fd103a235c5d1ed7cd
Reviewed-on: https://go-review.googlesource.com/31186
Reviewed-by: Nigel Tao 
Reviewed-by: Joe Tsai 
Run-TryBot: Joe Tsai 
TryBot-Result: Gobot Gobot

compress/flate: always return uncompressed data in the event of error

2016-08-31T01:12:02+00:00

In the event of an unexpected error, we should always flush available
decompressed data to the user.

Fixes #16924

Change-Id: I0bc0824c3201f3149e84e6a26e3dbcba72a1aae5
Reviewed-on: https://go-review.googlesource.com/28216
Run-TryBot: Joe Tsai 
TryBot-Result: Gobot Gobot 
Reviewed-by: Matthew Dempsky

compress: update documentation regarding footer verification

2016-05-09T19:19:24+00:00

Address two documentation issues:
1) Document that the GZIP and ZLIB footer is only verified when the
reader has been fully consumed.
2) The zlib reader is guaranteed to not read past the EOF if the
input io.Reader is also a io.ByteReader. This functionality was
documented in the flate and gzip packages but not on zlib.

Fixes #14867

Change-Id: I43d46b93e38f98a04901dc7d4f18ed2f9e09f6fb
Reviewed-on: https://go-review.googlesource.com/21218
Reviewed-by: Brad Fitzpatrick

compress/zlib: make errors persistent

2016-03-07T18:32:04+00:00

Ensure that all errors (including io.EOF) are persistent across method
calls on zlib.Reader. Furthermore, ensure that these persistent errors
are properly cleared when Reset is called.

Fixes #14675

Change-Id: I15a20c7e25dc38219e7e0ff255d1ba775a86bb47
Reviewed-on: https://go-review.googlesource.com/20292
Reviewed-by: Brad Fitzpatrick

build: shorten a few packages with long tests

2015-12-29T15:46:44+00:00

Takes 3% off my all.bash run time.

For #10571.

Change-Id: I8f00f523d6919e87182d35722a669b0b96b8218b
Reviewed-on: https://go-review.googlesource.com/18087
Reviewed-by: Ian Lance Taylor 
Reviewed-by: Brad Fitzpatrick 
Run-TryBot: Russ Cox 
TryBot-Result: Gobot Gobot

compress/zlib: detect truncated streams

2015-09-30T22:47:28+00:00

Reader failed to detect truncated streams since calls to
io.ReadFull did not check if the error is io.EOF.

Change-Id: I86c497519daaaccefc6eb5617ddcd8fd3b99f51b
Reviewed-on: https://go-review.googlesource.com/14835
Reviewed-by: Nigel Tao 
TryBot-Result: Gobot Gobot 
Reviewed-by: Brad Fitzpatrick

compress/flate: add Reset() to allow reusing large buffers to compress multiple buffers

2014-10-20T01:58:02+00:00

This adds a Reset() to compress/flate's decompressor and plumbs that through
to compress/zlib and compress/gzip's Readers so callers can avoid large
allocations when performing many inflate operations. In particular this
preserves the allocation of the decompressor.hist buffer, which is 32kb and
overwritten as needed while inflating.

On the benchmark described in issue 6317, produces the following speedup on
my 2.3ghz Intel Core i7 MBP with go version devel +6b696a34e0af Sun Aug 03
15:14:59 2014 -0700 darwin/amd64:

blocked.text w/out patch vs blocked.text w/ patch:
benchmark           old ns/op      new ns/op      delta
BenchmarkGunzip     8371577533     7927917687     -5.30%

benchmark           old allocs     new allocs     delta
BenchmarkGunzip     176818         148519         -16.00%

benchmark           old bytes     new bytes     delta
BenchmarkGunzip     292184936     12739528      -95.64%

flat.text vs blocked.text w/patch:
benchmark           old ns/op      new ns/op      delta
BenchmarkGunzip     7939447827     7927917687     -0.15%

benchmark           old allocs     new allocs     delta
BenchmarkGunzip     90702          148519         +63.74%

benchmark           old bytes     new bytes     delta
BenchmarkGunzip     9959528       12739528      +27.91%

Similar speedups to those bradfitz saw in  https://golang.org/cl/13416045.

Fixes #6317.
Fixes #7950.

LGTM=nigeltao
R=golang-codereviews, bradfitz, dan.kortschak, adg, nigeltao, jamesr
CC=golang-codereviews
https://golang.org/cl/97140043

compress/zlib: mention that NewReaderDict can return ErrDictionary

2014-09-30T16:30:31+00:00

Fixes #7935.

LGTM=iant
R=golang-codereviews, iant
CC=golang-codereviews, ruiu
https://golang.org/cl/147390043

build: move package sources from src/pkg to src

2014-09-08T04:08:51+00:00

Preparation was in CL 134570043.
This CL contains only the effect of 'hg mv src/pkg/* src'.
For more about the move, see golang.org/s/go14nopkg.