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view tests/test-git-export.t @ 30435:b86a448a2965
zstd: vendor python-zstandard 0.5.0
As the commit message for the previous changeset says, we wish
for zstd to be a 1st class citizen in Mercurial. To make that
happen, we need to enable Python to talk to the zstd C API. And
that requires bindings.
This commit vendors a copy of existing Python bindings. Why do we
need to vendor? As the commit message of the previous commit says,
relying on systems in the wild to have the bindings or zstd present
is a losing proposition. By distributing the zstd and bindings with
Mercurial, we significantly increase our chances that zstd will
work. Since zstd will deliver a better end-user experience by
achieving better performance, this benefits our users. Another
reason is that the Python bindings still aren't stable and the
API is somewhat fluid. While Mercurial could be coded to target
multiple versions of the Python bindings, it is safer to bundle
an explicit, known working version.
The added Python bindings are mostly a fully-featured interface
to the zstd C API. They allow one-shot operations, streaming,
reading and writing from objects implements the file object
protocol, dictionary compression, control over low-level compression
parameters, and more. The Python bindings work on Python 2.6,
2.7, and 3.3+ and have been tested on Linux and Windows. There are
CFFI bindings, but they are lacking compared to the C extension.
Upstream work will be needed before we can support zstd with PyPy.
But it will be possible.
The files added in this commit come from Git commit
e637c1b214d5f869cf8116c550dcae23ec13b677 from
https://github.com/indygreg/python-zstandard and are added without
modifications. Some files from the upstream repository have been
omitted, namely files related to continuous integration.
In the spirit of full disclosure, I'm the maintainer of the
"python-zstandard" project and have authored 100% of the code
added in this commit. Unfortunately, the Python bindings have
not been formally code reviewed by anyone. While I've tested
much of the code thoroughly (I even have tests that fuzz APIs),
there's a good chance there are bugs, memory leaks, not well
thought out APIs, etc. If someone wants to review the code and
send feedback to the GitHub project, it would be greatly
appreciated.
Despite my involvement with both projects, my opinions of code
style differ from Mercurial's. The code in this commit introduces
numerous code style violations in Mercurial's linters. So, the code
is excluded from most lints. However, some violations I agree with.
These have been added to the known violations ignore list for now.
| author | Gregory Szorc <gregory.szorc@gmail.com> |
|---|---|
| date | Thu, 10 Nov 2016 22:15:58 -0800 |
| parents | 8b51ec98a326 |
| children | 4441705b7111 |
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$ hg init $ echo start > start $ hg ci -Amstart adding start New file: $ mkdir dir1 $ echo new > dir1/new $ hg ci -Amnew adding dir1/new $ hg diff --git -r 0 diff --git a/dir1/new b/dir1/new new file mode 100644 --- /dev/null +++ b/dir1/new @@ -0,0 +1,1 @@ +new Copy: $ mkdir dir2 $ hg cp dir1/new dir1/copy $ echo copy1 >> dir1/copy $ hg cp dir1/new dir2/copy $ echo copy2 >> dir2/copy $ hg ci -mcopy $ hg diff --git -r 1:tip diff --git a/dir1/new b/dir1/copy copy from dir1/new copy to dir1/copy --- a/dir1/new +++ b/dir1/copy @@ -1,1 +1,2 @@ new +copy1 diff --git a/dir1/new b/dir2/copy copy from dir1/new copy to dir2/copy --- a/dir1/new +++ b/dir2/copy @@ -1,1 +1,2 @@ new +copy2 Cross and same-directory copies with a relative root: $ hg diff --git --root .. -r 1:tip abort: .. not under root '$TESTTMP' [255] $ hg diff --git --root doesnotexist -r 1:tip $ hg diff --git --root . -r 1:tip diff --git a/dir1/new b/dir1/copy copy from dir1/new copy to dir1/copy --- a/dir1/new +++ b/dir1/copy @@ -1,1 +1,2 @@ new +copy1 diff --git a/dir1/new b/dir2/copy copy from dir1/new copy to dir2/copy --- a/dir1/new +++ b/dir2/copy @@ -1,1 +1,2 @@ new +copy2 $ hg diff --git --root dir1 -r 1:tip diff --git a/new b/copy copy from new copy to copy --- a/new +++ b/copy @@ -1,1 +1,2 @@ new +copy1 $ hg diff --git --root dir2/ -r 1:tip diff --git a/copy b/copy new file mode 100644 --- /dev/null +++ b/copy @@ -0,0 +1,2 @@ +new +copy2 $ hg diff --git --root dir1 -r 1:tip -I '**/copy' diff --git a/new b/copy copy from new copy to copy --- a/new +++ b/copy @@ -1,1 +1,2 @@ new +copy1 $ hg diff --git --root dir1 -r 1:tip dir2 warning: dir2 not inside relative root dir1 $ hg diff --git --root dir1 -r 1:tip 'dir2/{copy}' warning: dir2/{copy} not inside relative root dir1 (glob) $ cd dir1 $ hg diff --git --root .. -r 1:tip diff --git a/dir1/new b/dir1/copy copy from dir1/new copy to dir1/copy --- a/dir1/new +++ b/dir1/copy @@ -1,1 +1,2 @@ new +copy1 diff --git a/dir1/new b/dir2/copy copy from dir1/new copy to dir2/copy --- a/dir1/new +++ b/dir2/copy @@ -1,1 +1,2 @@ new +copy2 $ hg diff --git --root ../.. -r 1:tip abort: ../.. not under root '$TESTTMP' [255] $ hg diff --git --root ../doesnotexist -r 1:tip $ hg diff --git --root .. -r 1:tip diff --git a/dir1/new b/dir1/copy copy from dir1/new copy to dir1/copy --- a/dir1/new +++ b/dir1/copy @@ -1,1 +1,2 @@ new +copy1 diff --git a/dir1/new b/dir2/copy copy from dir1/new copy to dir2/copy --- a/dir1/new +++ b/dir2/copy @@ -1,1 +1,2 @@ new +copy2 $ hg diff --git --root . -r 1:tip diff --git a/new b/copy copy from new copy to copy --- a/new +++ b/copy @@ -1,1 +1,2 @@ new +copy1 $ hg diff --git --root . -r 1:tip copy diff --git a/new b/copy copy from new copy to copy --- a/new +++ b/copy @@ -1,1 +1,2 @@ new +copy1 $ hg diff --git --root . -r 1:tip ../dir2 warning: ../dir2 not inside relative root . (glob) $ hg diff --git --root . -r 1:tip '../dir2/*' warning: ../dir2/* not inside relative root . (glob) $ cd .. Rename: $ hg mv dir1/copy dir1/rename1 $ echo rename1 >> dir1/rename1 $ hg mv dir2/copy dir1/rename2 $ echo rename2 >> dir1/rename2 $ hg ci -mrename $ hg diff --git -r 2:tip diff --git a/dir1/copy b/dir1/rename1 rename from dir1/copy rename to dir1/rename1 --- a/dir1/copy +++ b/dir1/rename1 @@ -1,2 +1,3 @@ new copy1 +rename1 diff --git a/dir2/copy b/dir1/rename2 rename from dir2/copy rename to dir1/rename2 --- a/dir2/copy +++ b/dir1/rename2 @@ -1,2 +1,3 @@ new copy2 +rename2 Cross and same-directory renames with a relative root: $ hg diff --root dir1 --git -r 2:tip diff --git a/copy b/rename1 rename from copy rename to rename1 --- a/copy +++ b/rename1 @@ -1,2 +1,3 @@ new copy1 +rename1 diff --git a/rename2 b/rename2 new file mode 100644 --- /dev/null +++ b/rename2 @@ -0,0 +1,3 @@ +new +copy2 +rename2 $ hg diff --root dir2 --git -r 2:tip diff --git a/copy b/copy deleted file mode 100644 --- a/copy +++ /dev/null @@ -1,2 +0,0 @@ -new -copy2 $ hg diff --root dir1 --git -r 2:tip -I '**/copy' diff --git a/copy b/copy deleted file mode 100644 --- a/copy +++ /dev/null @@ -1,2 +0,0 @@ -new -copy1 $ hg diff --root dir1 --git -r 2:tip -I '**/rename*' diff --git a/copy b/rename1 copy from copy copy to rename1 --- a/copy +++ b/rename1 @@ -1,2 +1,3 @@ new copy1 +rename1 diff --git a/rename2 b/rename2 new file mode 100644 --- /dev/null +++ b/rename2 @@ -0,0 +1,3 @@ +new +copy2 +rename2 Delete: $ hg rm dir1/* $ hg ci -mdelete $ hg diff --git -r 3:tip diff --git a/dir1/new b/dir1/new deleted file mode 100644 --- a/dir1/new +++ /dev/null @@ -1,1 +0,0 @@ -new diff --git a/dir1/rename1 b/dir1/rename1 deleted file mode 100644 --- a/dir1/rename1 +++ /dev/null @@ -1,3 +0,0 @@ -new -copy1 -rename1 diff --git a/dir1/rename2 b/dir1/rename2 deleted file mode 100644 --- a/dir1/rename2 +++ /dev/null @@ -1,3 +0,0 @@ -new -copy2 -rename2 $ cat > src <<EOF > 1 > 2 > 3 > 4 > 5 > EOF $ hg ci -Amsrc adding src #if execbit chmod 644: $ chmod +x src $ hg ci -munexec $ hg diff --git -r 5:tip diff --git a/src b/src old mode 100644 new mode 100755 Rename+mod+chmod: $ hg mv src dst $ chmod -x dst $ echo a >> dst $ hg ci -mrenamemod $ hg diff --git -r 6:tip diff --git a/src b/dst old mode 100755 new mode 100644 rename from src rename to dst --- a/src +++ b/dst @@ -3,3 +3,4 @@ 3 4 5 +a Nonexistent in tip+chmod: $ hg diff --git -r 5:6 diff --git a/src b/src old mode 100644 new mode 100755 #else Dummy changes when no exec bit, mocking the execbit commit structure $ echo change >> src $ hg ci -munexec $ hg mv src dst $ hg ci -mrenamemod #endif Binary diff: $ cp "$TESTDIR/binfile.bin" . $ hg add binfile.bin $ hg diff --git > b.diff $ cat b.diff diff --git a/binfile.bin b/binfile.bin new file mode 100644 index e69de29bb2d1d6434b8b29ae775ad8c2e48c5391..37ba3d1c6f17137d9c5f5776fa040caf5fe73ff9 GIT binary patch literal 593 zc$@)I0<QguP)<h;3K|Lk000e1NJLTq000mG000mO0ssI2kdbIM00009a7bBm000XU z000XU0RWnu7ytkO2XskIMF-Uh9TW;VpMjwv0005-Nkl<ZD9@FWPs=e;7{<>W$NUkd zX$nnYLt$-$V!?uy+1V%`z&Eh=ah|duER<4|QWhju3gb^nF*8iYobxWG-qqXl=2~5M z*IoDB)sG^CfNuoBmqLTVU^<;@nwHP!1wrWd`{(mHo6VNXWtyh{alzqmsH*yYzpvLT zLdY<T=ks|woh-`&01!ej#(xbV1f|pI*=%;d-%F*E*X#ZH`4I%6SS+$EJDE&ct=8po ziN#{?_j|kD%Cd|oiqds`xm@;oJ-^?NG3Gdqrs?5u*zI;{nogxsx~^|Fn^Y?Gdc6<; zfMJ+iF1J`LMx&A2?dEwNW8ClebzPTbIh{@$hS6*`kH@1d%Lo7fA#}N1)oN7`gm$~V z+wDx#)OFqMcE{s!JN0-xhG8ItAjVkJwEcb`3WWlJfU2r?;Pd%dmR+q@mSri5q9_W- zaR2~ECX?B2w+zELozC0s*6Z~|QG^f{3I#<`?)Q7U-JZ|q5W;9Q8i_=pBuSzunx=U; z9C)5jBoYw9^?EHyQl(M}1OlQcCX>lXB*ODN003Z&P17_@)3Pi=i0wb04<W?v-u}7K zXmmQA+wDgE!qR9o8jr`%=ab_&uh(l?R=r;Tjiqon91I2-hIu?57~@*4h7h9uORK#= fQItJW-{SoTm)8|5##k|m00000NkvXXu0mjf{mKw4 Import binary diff: $ hg revert binfile.bin $ rm binfile.bin $ hg import -mfoo b.diff applying b.diff $ cmp binfile.bin "$TESTDIR/binfile.bin" Rename binary file: $ hg mv binfile.bin renamed.bin $ hg diff --git diff --git a/binfile.bin b/renamed.bin rename from binfile.bin rename to renamed.bin Diff across many revisions: $ hg mv dst dst2 $ hg ci -m 'mv dst dst2' $ echo >> start $ hg ci -m 'change start' $ hg revert -r -2 start $ hg mv dst2 dst3 $ hg ci -m 'mv dst2 dst3; revert start' $ hg diff --git -r 9:11 diff --git a/dst2 b/dst3 rename from dst2 rename to dst3 Reversed: $ hg diff --git -r 11:9 diff --git a/dst3 b/dst2 rename from dst3 rename to dst2 $ echo a >> foo $ hg add foo $ hg ci -m 'add foo' $ echo b >> foo $ hg ci -m 'change foo' $ hg mv foo bar $ hg ci -m 'mv foo bar' $ echo c >> bar $ hg ci -m 'change bar' File created before r1 and renamed before r2: $ hg diff --git -r -3:-1 diff --git a/foo b/bar rename from foo rename to bar --- a/foo +++ b/bar @@ -1,2 +1,3 @@ a b +c Reversed: $ hg diff --git -r -1:-3 diff --git a/bar b/foo rename from bar rename to foo --- a/bar +++ b/foo @@ -1,3 +1,2 @@ a b -c File created in r1 and renamed before r2: $ hg diff --git -r -4:-1 diff --git a/foo b/bar rename from foo rename to bar --- a/foo +++ b/bar @@ -1,1 +1,3 @@ a +b +c Reversed: $ hg diff --git -r -1:-4 diff --git a/bar b/foo rename from bar rename to foo --- a/bar +++ b/foo @@ -1,3 +1,1 @@ a -b -c File created after r1 and renamed before r2: $ hg diff --git -r -5:-1 diff --git a/bar b/bar new file mode 100644 --- /dev/null +++ b/bar @@ -0,0 +1,3 @@ +a +b +c Reversed: $ hg diff --git -r -1:-5 diff --git a/bar b/bar deleted file mode 100644 --- a/bar +++ /dev/null @@ -1,3 +0,0 @@ -a -b -c Comparing with the working dir: $ echo >> start $ hg ci -m 'change start again' $ echo > created $ hg add created $ hg ci -m 'add created' $ hg mv created created2 $ hg ci -m 'mv created created2' $ hg mv created2 created3 There's a copy in the working dir: $ hg diff --git diff --git a/created2 b/created3 rename from created2 rename to created3 There's another copy between the original rev and the wd: $ hg diff --git -r -2 diff --git a/created b/created3 rename from created rename to created3 The source of the copy was created after the original rev: $ hg diff --git -r -3 diff --git a/created3 b/created3 new file mode 100644 --- /dev/null +++ b/created3 @@ -0,0 +1,1 @@ + $ hg ci -m 'mv created2 created3' $ echo > brand-new $ hg add brand-new $ hg ci -m 'add brand-new' $ hg mv brand-new brand-new2 Created in parent of wd; renamed in the wd: $ hg diff --git diff --git a/brand-new b/brand-new2 rename from brand-new rename to brand-new2 Created between r1 and parent of wd; renamed in the wd: $ hg diff --git -r -2 diff --git a/brand-new2 b/brand-new2 new file mode 100644 --- /dev/null +++ b/brand-new2 @@ -0,0 +1,1 @@ + $ hg ci -m 'mv brand-new brand-new2' One file is copied to many destinations and removed: $ hg cp brand-new2 brand-new3 $ hg mv brand-new2 brand-new3-2 $ hg ci -m 'multiple renames/copies' $ hg diff --git -r -2 -r -1 diff --git a/brand-new2 b/brand-new3 rename from brand-new2 rename to brand-new3 diff --git a/brand-new2 b/brand-new3-2 copy from brand-new2 copy to brand-new3-2 Reversed: $ hg diff --git -r -1 -r -2 diff --git a/brand-new3-2 b/brand-new2 rename from brand-new3-2 rename to brand-new2 diff --git a/brand-new3 b/brand-new3 deleted file mode 100644 --- a/brand-new3 +++ /dev/null @@ -1,1 +0,0 @@ - There should be a trailing TAB if there are spaces in the file name: $ echo foo > 'with spaces' $ hg add 'with spaces' $ hg diff --git diff --git a/with spaces b/with spaces new file mode 100644 --- /dev/null +++ b/with spaces @@ -0,0 +1,1 @@ +foo $ hg ci -m 'add filename with spaces' Additions should be properly marked even in the middle of a merge $ hg up -r -2 0 files updated, 0 files merged, 1 files removed, 0 files unresolved $ echo "New File" >> inmerge $ hg add inmerge $ hg ci -m "file in merge" created new head $ hg up 23 1 files updated, 0 files merged, 1 files removed, 0 files unresolved $ hg merge 1 files updated, 0 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ hg diff -g diff --git a/inmerge b/inmerge new file mode 100644 --- /dev/null +++ b/inmerge @@ -0,0 +1,1 @@ +New File