Mercurial > hg
view tests/test-convert-cvs.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 | 75e29fcc5a71 |
children | 0823f0983eaa |
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#require cvs $ cvscall() > { > cvs -f "$@" > } $ hgcat() > { > hg --cwd src-hg cat -r tip "$1" > } $ echo "[extensions]" >> $HGRCPATH $ echo "convert = " >> $HGRCPATH $ cat > cvshooks.py <<EOF > def cvslog(ui,repo,hooktype,log): > print "%s hook: %d entries"%(hooktype,len(log)) > > def cvschangesets(ui,repo,hooktype,changesets): > print "%s hook: %d changesets"%(hooktype,len(changesets)) > EOF $ hookpath=`pwd` $ cat <<EOF >> $HGRCPATH > [hooks] > cvslog = python:$hookpath/cvshooks.py:cvslog > cvschangesets = python:$hookpath/cvshooks.py:cvschangesets > EOF create cvs repository $ mkdir cvsrepo $ cd cvsrepo $ CVSROOT=`pwd` $ export CVSROOT $ CVS_OPTIONS=-f $ export CVS_OPTIONS $ cd .. $ rmdir cvsrepo $ cvscall -q -d "$CVSROOT" init create source directory $ mkdir src-temp $ cd src-temp $ echo a > a $ mkdir b $ cd b $ echo c > c $ cd .. import source directory $ cvscall -q import -m import src INITIAL start N src/a N src/b/c No conflicts created by this import $ cd .. checkout source directory $ cvscall -q checkout src U src/a U src/b/c commit a new revision changing b/c $ cd src $ sleep 1 $ echo c >> b/c $ cvscall -q commit -mci0 . | grep '<--' $TESTTMP/cvsrepo/src/b/c,v <-- *c (glob) $ cd .. convert fresh repo and also check 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 src src-hg initializing destination src-hg repository connecting to $TESTTMP/cvsrepo scanning source... collecting CVS rlog 5 log entries cvslog hook: 5 entries creating changesets 3 changeset entries cvschangesets hook: 3 changesets sorting... converting... 2 Initial revision 1 ci0 0 import updating tags $ hgcat a a $ hgcat b/c c c convert fresh repo with --filemap $ echo include b/c > filemap $ hg convert --filemap filemap src src-filemap initializing destination src-filemap repository connecting to $TESTTMP/cvsrepo scanning source... collecting CVS rlog 5 log entries cvslog hook: 5 entries creating changesets 3 changeset entries cvschangesets hook: 3 changesets sorting... converting... 2 Initial revision 1 ci0 0 import filtering out empty revision repository tip rolled back to revision 1 (undo convert) updating tags $ hgcat b/c c c $ hg -R src-filemap log --template '{rev} {desc} files: {files}\n' 2 update tags files: .hgtags 1 ci0 files: b/c 0 Initial revision files: b/c convert full repository (issue1649) $ cvscall -q -d "$CVSROOT" checkout -d srcfull "." | grep -v CVSROOT U srcfull/src/a U srcfull/src/b/c $ ls srcfull CVS CVSROOT src $ hg convert srcfull srcfull-hg \ > | grep -v 'log entries' | grep -v 'hook:' \ > | grep -v '^[0-3] .*' # filter instable changeset order initializing destination srcfull-hg repository connecting to $TESTTMP/cvsrepo scanning source... collecting CVS rlog creating changesets 4 changeset entries sorting... converting... updating tags $ hg cat -r tip --cwd srcfull-hg src/a a $ hg cat -r tip --cwd srcfull-hg src/b/c c c commit new file revisions $ cd src $ echo a >> a $ echo c >> b/c $ cvscall -q commit -mci1 . | grep '<--' $TESTTMP/cvsrepo/src/a,v <-- a $TESTTMP/cvsrepo/src/b/c,v <-- *c (glob) $ cd .. convert again $ TZ=US/Hawaii hg convert --config convert.localtimezone=True src src-hg connecting to $TESTTMP/cvsrepo scanning source... collecting CVS rlog 7 log entries cvslog hook: 7 entries creating changesets 4 changeset entries cvschangesets hook: 4 changesets sorting... converting... 0 ci1 $ hgcat a a a $ hgcat b/c c c c convert again with --filemap $ hg convert --filemap filemap src src-filemap connecting to $TESTTMP/cvsrepo scanning source... collecting CVS rlog 7 log entries cvslog hook: 7 entries creating changesets 4 changeset entries cvschangesets hook: 4 changesets sorting... converting... 0 ci1 $ hgcat b/c c c c $ hg -R src-filemap log --template '{rev} {desc} files: {files}\n' 3 ci1 files: b/c 2 update tags files: .hgtags 1 ci0 files: b/c 0 Initial revision files: b/c commit branch $ cd src $ cvs -q update -r1.1 b/c U b/c $ cvs -q tag -b branch T a T b/c $ cvs -q update -r branch > /dev/null $ sleep 1 $ echo d >> b/c $ cvs -q commit -mci2 . | grep '<--' $TESTTMP/cvsrepo/src/b/c,v <-- *c (glob) $ cd .. convert again $ TZ=US/Hawaii hg convert --config convert.localtimezone=True src src-hg connecting to $TESTTMP/cvsrepo scanning source... collecting CVS rlog 8 log entries cvslog hook: 8 entries creating changesets 5 changeset entries cvschangesets hook: 5 changesets sorting... converting... 0 ci2 $ hgcat b/c c d convert again with --filemap $ TZ=US/Hawaii hg convert --config convert.localtimezone=True --filemap filemap src src-filemap connecting to $TESTTMP/cvsrepo scanning source... collecting CVS rlog 8 log entries cvslog hook: 8 entries creating changesets 5 changeset entries cvschangesets hook: 5 changesets sorting... converting... 0 ci2 $ hgcat b/c c d $ hg -R src-filemap log --template '{rev} {desc} files: {files}\n' 4 ci2 files: b/c 3 ci1 files: b/c 2 update tags files: .hgtags 1 ci0 files: b/c 0 Initial revision files: b/c commit a new revision with funny log message $ cd src $ sleep 1 $ echo e >> a $ cvscall -q commit -m'funny > ---------------------------- > log message' . | grep '<--' |\ > sed -e 's:.*src/\(.*\),v.*:checking in src/\1,v:g' checking in src/a,v commit new file revisions with some fuzz $ sleep 1 $ echo f >> a $ cvscall -q commit -mfuzzy . | grep '<--' $TESTTMP/cvsrepo/src/a,v <-- a $ sleep 4 # the two changes will be split if fuzz < 4 $ echo g >> b/c $ cvscall -q commit -mfuzzy . | grep '<--' $TESTTMP/cvsrepo/src/b/c,v <-- *c (glob) $ cd .. convert again $ TZ=US/Hawaii hg convert --config convert.cvsps.fuzz=2 --config convert.localtimezone=True src src-hg connecting to $TESTTMP/cvsrepo scanning source... collecting CVS rlog 11 log entries cvslog hook: 11 entries creating changesets 8 changeset entries cvschangesets hook: 8 changesets sorting... converting... 2 funny 1 fuzzy 0 fuzzy $ hg -R src-hg log -G --template '{rev} ({branches}) {desc} date: {date|date} files: {files}\n' o 8 (branch) fuzzy date: * -1000 files: b/c (glob) | o 7 (branch) fuzzy date: * -1000 files: a (glob) | o 6 (branch) funny | ---------------------------- | log message date: * -1000 files: a (glob) o 5 (branch) ci2 date: * -1000 files: b/c (glob) o 4 () ci1 date: * -1000 files: a b/c (glob) | o 3 () update tags date: * +0000 files: .hgtags (glob) | | o 2 (INITIAL) import date: * -1000 files: (glob) | | o | 1 () ci0 date: * -1000 files: b/c (glob) |/ o 0 () Initial revision date: * -1000 files: a b/c (glob) testing debugcvsps $ cd src $ hg debugcvsps --fuzz=2 -x >/dev/null commit a new revision changing a and removing b/c $ cvscall -q update -A U a U b/c $ sleep 1 $ echo h >> a $ cvscall -Q remove -f b/c $ cvscall -q commit -mci | grep '<--' $TESTTMP/cvsrepo/src/a,v <-- a $TESTTMP/cvsrepo/src/b/c,v <-- *c (glob) update and verify the cvsps cache $ hg debugcvsps --fuzz=2 -u collecting CVS rlog 13 log entries cvslog hook: 13 entries creating changesets 11 changeset entries cvschangesets hook: 11 changesets --------------------- PatchSet 1 Date: * (glob) Author: * (glob) Branch: HEAD Tag: (none) Branchpoints: INITIAL Log: Initial revision Members: a:INITIAL->1.1 --------------------- PatchSet 2 Date: * (glob) Author: * (glob) Branch: HEAD Tag: (none) Branchpoints: INITIAL, branch Log: Initial revision Members: b/c:INITIAL->1.1 --------------------- PatchSet 3 Date: * (glob) Author: * (glob) Branch: INITIAL Tag: start Log: import Members: a:1.1->1.1.1.1 b/c:1.1->1.1.1.1 --------------------- PatchSet 4 Date: * (glob) Author: * (glob) Branch: HEAD Tag: (none) Log: ci0 Members: b/c:1.1->1.2 --------------------- PatchSet 5 Date: * (glob) Author: * (glob) Branch: HEAD Tag: (none) Branchpoints: branch Log: ci1 Members: a:1.1->1.2 --------------------- PatchSet 6 Date: * (glob) Author: * (glob) Branch: HEAD Tag: (none) Log: ci1 Members: b/c:1.2->1.3 --------------------- PatchSet 7 Date: * (glob) Author: * (glob) Branch: branch Tag: (none) Log: ci2 Members: b/c:1.1->1.1.2.1 --------------------- PatchSet 8 Date: * (glob) Author: * (glob) Branch: branch Tag: (none) Log: funny ---------------------------- log message Members: a:1.2->1.2.2.1 --------------------- PatchSet 9 Date: * (glob) Author: * (glob) Branch: branch Tag: (none) Log: fuzzy Members: a:1.2.2.1->1.2.2.2 --------------------- PatchSet 10 Date: * (glob) Author: * (glob) Branch: branch Tag: (none) Log: fuzzy Members: b/c:1.1.2.1->1.1.2.2 --------------------- PatchSet 11 Date: * (glob) Author: * (glob) Branch: HEAD Tag: (none) Log: ci Members: a:1.2->1.3 b/c:1.3->1.4(DEAD) $ cd ..