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view tests/test-hgrc.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 | 3d2ea1403c62 |
children | ff7df4bb75de |
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hide outer repo $ hg init Use hgrc within $TESTTMP $ HGRCPATH=`pwd`/hgrc $ export HGRCPATH Use an alternate var for scribbling on hgrc to keep check-code from complaining about the important settings we may be overwriting: $ HGRC=`pwd`/hgrc $ export HGRC Basic syntax error $ echo "invalid" > $HGRC $ hg version hg: parse error at $TESTTMP/hgrc:1: invalid [255] $ echo "" > $HGRC Issue1199: Can't use '%' in hgrc (eg url encoded username) $ hg init "foo%bar" $ hg clone "foo%bar" foobar updating to branch default 0 files updated, 0 files merged, 0 files removed, 0 files unresolved $ cd foobar $ cat .hg/hgrc # example repository config (see 'hg help config' for more info) [paths] default = $TESTTMP/foo%bar (glob) # path aliases to other clones of this repo in URLs or filesystem paths # (see 'hg help config.paths' for more info) # # default-push = ssh://jdoe@example.net/hg/jdoes-fork # my-fork = ssh://jdoe@example.net/hg/jdoes-fork # my-clone = /home/jdoe/jdoes-clone [ui] # name and email (local to this repository, optional), e.g. # username = Jane Doe <jdoe@example.com> $ hg paths default = $TESTTMP/foo%bar (glob) $ hg showconfig bundle.mainreporoot=$TESTTMP/foobar (glob) extensions.chgserver= (?) paths.default=$TESTTMP/foo%bar (glob) $ cd .. issue1829: wrong indentation $ echo '[foo]' > $HGRC $ echo ' x = y' >> $HGRC $ hg version hg: parse error at $TESTTMP/hgrc:2: x = y unexpected leading whitespace [255] $ $PYTHON -c "print '[foo]\nbar = a\n b\n c \n de\n fg \nbaz = bif cb \n'" \ > > $HGRC $ hg showconfig foo foo.bar=a\nb\nc\nde\nfg foo.baz=bif cb $ FAKEPATH=/path/to/nowhere $ export FAKEPATH $ echo '%include $FAKEPATH/no-such-file' > $HGRC $ hg version Mercurial Distributed SCM (version *) (glob) (see https://mercurial-scm.org for more information) Copyright (C) 2005-2016 Matt Mackall and others This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. $ unset FAKEPATH make sure global options given on the cmdline take precedence $ hg showconfig --config ui.verbose=True --quiet bundle.mainreporoot=$TESTTMP extensions.chgserver= (?) ui.verbose=False ui.debug=False ui.quiet=True $ touch foobar/untracked $ cat >> foobar/.hg/hgrc <<EOF > [ui] > verbose=True > EOF $ hg -R foobar st -q username expansion $ olduser=$HGUSER $ unset HGUSER $ FAKEUSER='John Doe' $ export FAKEUSER $ echo '[ui]' > $HGRC $ echo 'username = $FAKEUSER' >> $HGRC $ hg init usertest $ cd usertest $ touch bar $ hg commit --addremove --quiet -m "added bar" $ hg log --template "{author}\n" John Doe $ cd .. $ hg showconfig bundle.mainreporoot=$TESTTMP extensions.chgserver= (?) ui.username=$FAKEUSER $ unset FAKEUSER $ HGUSER=$olduser $ export HGUSER showconfig with multiple arguments $ echo "[alias]" > $HGRC $ echo "log = log -g" >> $HGRC $ echo "[defaults]" >> $HGRC $ echo "identify = -n" >> $HGRC $ hg showconfig alias defaults alias.log=log -g defaults.identify=-n $ hg showconfig alias defaults.identify abort: only one config item permitted [255] $ hg showconfig alias.log defaults.identify abort: only one config item permitted [255] HGPLAIN $ echo "[ui]" > $HGRC $ echo "debug=true" >> $HGRC $ echo "fallbackencoding=ASCII" >> $HGRC $ echo "quiet=true" >> $HGRC $ echo "slash=true" >> $HGRC $ echo "traceback=true" >> $HGRC $ echo "verbose=true" >> $HGRC $ echo "style=~/.hgstyle" >> $HGRC $ echo "logtemplate={node}" >> $HGRC $ echo "[defaults]" >> $HGRC $ echo "identify=-n" >> $HGRC $ echo "[alias]" >> $HGRC $ echo "log=log -g" >> $HGRC customized hgrc $ hg showconfig read config from: $TESTTMP/hgrc $TESTTMP/hgrc:13: alias.log=log -g repo: bundle.mainreporoot=$TESTTMP $TESTTMP/hgrc:11: defaults.identify=-n --config: extensions.chgserver= (?) $TESTTMP/hgrc:2: ui.debug=true $TESTTMP/hgrc:3: ui.fallbackencoding=ASCII $TESTTMP/hgrc:4: ui.quiet=true $TESTTMP/hgrc:5: ui.slash=true $TESTTMP/hgrc:6: ui.traceback=true $TESTTMP/hgrc:7: ui.verbose=true $TESTTMP/hgrc:8: ui.style=~/.hgstyle $TESTTMP/hgrc:9: ui.logtemplate={node} plain hgrc $ HGPLAIN=; export HGPLAIN $ hg showconfig --config ui.traceback=True --debug read config from: $TESTTMP/hgrc repo: bundle.mainreporoot=$TESTTMP --config: extensions.chgserver= (?) --config: ui.traceback=True --verbose: ui.verbose=False --debug: ui.debug=True --quiet: ui.quiet=False plain mode with exceptions $ cat > plain.py <<EOF > from mercurial import commands, extensions > def _config(orig, ui, repo, *values, **opts): > ui.write('plain: %r\n' % ui.plain()) > return orig(ui, repo, *values, **opts) > def uisetup(ui): > extensions.wrapcommand(commands.table, 'config', _config) > EOF $ echo "[extensions]" >> $HGRC $ echo "plain=./plain.py" >> $HGRC $ HGPLAINEXCEPT=; export HGPLAINEXCEPT $ hg showconfig --config ui.traceback=True --debug plain: True read config from: $TESTTMP/hgrc repo: bundle.mainreporoot=$TESTTMP $TESTTMP/hgrc:15: extensions.plain=./plain.py --config: extensions.chgserver= (?) --config: ui.traceback=True --verbose: ui.verbose=False --debug: ui.debug=True --quiet: ui.quiet=False $ unset HGPLAIN $ hg showconfig --config ui.traceback=True --debug plain: True read config from: $TESTTMP/hgrc repo: bundle.mainreporoot=$TESTTMP $TESTTMP/hgrc:15: extensions.plain=./plain.py --config: extensions.chgserver= (?) --config: ui.traceback=True --verbose: ui.verbose=False --debug: ui.debug=True --quiet: ui.quiet=False $ HGPLAINEXCEPT=i18n; export HGPLAINEXCEPT $ hg showconfig --config ui.traceback=True --debug plain: True read config from: $TESTTMP/hgrc repo: bundle.mainreporoot=$TESTTMP $TESTTMP/hgrc:15: extensions.plain=./plain.py --config: extensions.chgserver= (?) --config: ui.traceback=True --verbose: ui.verbose=False --debug: ui.debug=True --quiet: ui.quiet=False source of paths is not mangled $ cat >> $HGRCPATH <<EOF > [paths] > foo = bar > EOF $ hg showconfig --debug paths plain: True read config from: $TESTTMP/hgrc $TESTTMP/hgrc:17: paths.foo=$TESTTMP/bar (glob)