Mercurial > hg
view tests/test-convert-svn-source.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 | dfd5a6830ea7 |
children | 4441705b7111 |
line wrap: on
line source
#require svn svn-bindings $ filter_svn_output () { > egrep -v 'Committing|Updating|(^$)' | sed -e 's/done$//' || true > } $ cat >> $HGRCPATH <<EOF > [extensions] > convert = > [convert] > svn.trunk = mytrunk > EOF $ svnadmin create svn-repo $ SVNREPOPATH=`pwd`/svn-repo #if windows $ SVNREPOURL=file:///`$PYTHON -c "import urllib, sys; sys.stdout.write(urllib.quote(sys.argv[1]))" "$SVNREPOPATH"` #else $ SVNREPOURL=file://`$PYTHON -c "import urllib, sys; sys.stdout.write(urllib.quote(sys.argv[1]))" "$SVNREPOPATH"` #endif $ INVALIDREVISIONID=svn:x2147622-4a9f-4db4-a8d3-13562ff547b2/proj%20B/mytrunk@1 $ VALIDREVISIONID=svn:a2147622-4a9f-4db4-a8d3-13562ff547b2/proj%20B/mytrunk/mytrunk@1 Now test that it works with trunk/tags layout, but no branches yet. Initial svn import $ mkdir projB $ cd projB $ mkdir mytrunk $ mkdir tags $ cd .. $ svn import -m "init projB" projB "$SVNREPOURL/proj%20B" | filter_svn_output | sort Adding projB/mytrunk (glob) Adding projB/tags (glob) Committed revision 1. Update svn repository $ svn co "$SVNREPOURL/proj%20B/mytrunk" B | filter_svn_output Checked out revision 1. $ cd B $ echo hello > 'letter .txt' $ svn add 'letter .txt' | filter_svn_output A letter .txt $ svn ci -m hello | filter_svn_output Adding letter .txt Transmitting file data . Committed revision 2. $ svn-safe-append.py world 'letter .txt' $ svn ci -m world | filter_svn_output Sending letter .txt Transmitting file data . Committed revision 3. $ svn copy -m "tag v0.1" "$SVNREPOURL/proj%20B/mytrunk" "$SVNREPOURL/proj%20B/tags/v0.1" | filter_svn_output Committed revision 4. $ svn-safe-append.py 'nice day today!' 'letter .txt' $ svn ci -m "nice day" | filter_svn_output Sending letter .txt Transmitting file data . Committed revision 5. $ cd .. Convert to hg once and also test localtimezone option NOTE: This doesn't check all time zones -- it merely determines that the configuration option is taking effect. An arbitrary (U.S.) time zone is used here. TZ=US/Hawaii is selected since it does not use DST (unlike other U.S. time zones) and is always a fixed difference from UTC. $ TZ=US/Hawaii hg convert --config convert.localtimezone=True "$SVNREPOURL/proj%20B" B-hg initializing destination B-hg repository scanning source... sorting... converting... 3 init projB 2 hello 1 world 0 nice day updating tags Update svn repository again $ cd B $ svn-safe-append.py "see second letter" 'letter .txt' $ echo "nice to meet you" > letter2.txt $ svn add letter2.txt | filter_svn_output A letter2.txt $ svn ci -m "second letter" | filter_svn_output Sending letter .txt Adding letter2.txt Transmitting file data .. Committed revision 6. $ svn copy -m "tag v0.2" "$SVNREPOURL/proj%20B/mytrunk" "$SVNREPOURL/proj%20B/tags/v0.2" | filter_svn_output Committed revision 7. $ svn-safe-append.py "blah-blah-blah" letter2.txt $ svn ci -m "work in progress" | filter_svn_output Sending letter2.txt Transmitting file data . Committed revision 8. $ cd .. $ hg convert -s svn "$SVNREPOURL/proj%20B/non-existent-path" dest initializing destination dest repository abort: no revision found in module /proj B/non-existent-path [255] ######################################## Test incremental conversion $ TZ=US/Hawaii hg convert --config convert.localtimezone=True "$SVNREPOURL/proj%20B" B-hg scanning source... sorting... converting... 1 second letter 0 work in progress updating tags $ cd B-hg $ hg log -G --template '{rev} {desc|firstline} date: {date|date} files: {files}\n' o 7 update tags date: * +0000 files: .hgtags (glob) | o 6 work in progress date: * -1000 files: letter2.txt (glob) | o 5 second letter date: * -1000 files: letter .txt letter2.txt (glob) | o 4 update tags date: * +0000 files: .hgtags (glob) | o 3 nice day date: * -1000 files: letter .txt (glob) | o 2 world date: * -1000 files: letter .txt (glob) | o 1 hello date: * -1000 files: letter .txt (glob) | o 0 init projB date: * -1000 files: (glob) $ hg tags -q tip v0.2 v0.1 $ cd .. Test filemap $ echo 'include letter2.txt' > filemap $ hg convert --filemap filemap "$SVNREPOURL/proj%20B/mytrunk" fmap initializing destination fmap repository scanning source... sorting... converting... 5 init projB 4 hello 3 world 2 nice day 1 second letter 0 work in progress $ hg -R fmap branch -q default $ hg log -G -R fmap --template '{rev} {desc|firstline} files: {files}\n' o 1 work in progress files: letter2.txt | o 0 second letter files: letter2.txt Convert with --full adds and removes files that didn't change $ cd B $ echo >> "letter .txt" $ svn ci -m 'nothing' | filter_svn_output Sending letter .txt Transmitting file data . Committed revision 9. $ cd .. $ echo 'rename letter2.txt letter3.txt' > filemap $ hg convert --filemap filemap --full "$SVNREPOURL/proj%20B/mytrunk" fmap scanning source... sorting... converting... 0 nothing $ hg -R fmap st --change tip A letter .txt A letter3.txt R letter2.txt test invalid splicemap1 $ cat > splicemap <<EOF > $INVALIDREVISIONID $VALIDREVISIONID > EOF $ hg convert --splicemap splicemap "$SVNREPOURL/proj%20B/mytrunk" smap initializing destination smap repository abort: splicemap entry svn:x2147622-4a9f-4db4-a8d3-13562ff547b2/proj%20B/mytrunk@1 is not a valid revision identifier [255] Test stop revision $ hg convert --rev 1 "$SVNREPOURL/proj%20B/mytrunk" stoprev initializing destination stoprev repository scanning source... sorting... converting... 0 init projB $ hg -R stoprev branch -q default Check convert_revision extra-records. This is also the only place testing more than one extra field in a revision. $ cd stoprev $ hg tip --debug | grep extra extra: branch=default extra: convert_revision=svn:........-....-....-....-............/proj B/mytrunk@1 (re) $ cd .. Test converting empty heads (issue3347). Also tests getting logs directly without debugsvnlog. $ svnadmin create svn-empty $ svnadmin load -q svn-empty < "$TESTDIR/svn/empty.svndump" $ hg --config convert.svn.trunk= --config convert.svn.debugsvnlog=0 convert svn-empty assuming destination svn-empty-hg initializing destination svn-empty-hg repository scanning source... sorting... converting... 1 init projA 0 adddir $ hg --config convert.svn.trunk= convert "$SVNREPOURL/../svn-empty/trunk" assuming destination trunk-hg initializing destination trunk-hg repository scanning source... sorting... converting... 1 init projA 0 adddir Test that a too-new repository format is properly rejected: $ mv svn-empty/format format $ echo 999 > svn-empty/format It's important that this command explicitly specify svn, otherwise it can have surprising side effects (like falling back to a perforce depot that can be seen from the test environment and slurping from that.) $ hg convert --source-type svn svn-empty this-will-fail initializing destination this-will-fail repository file:/*/$TESTTMP/svn-empty does not look like a Subversion repository to libsvn version 1.*.* (glob) abort: svn-empty: missing or unsupported repository [255] $ mv format svn-empty/format