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view tests/test-alias.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 | 7109d5ddeb0c |
children | a8a9c0d3232b |
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$ HGFOO=BAR; export HGFOO $ cat >> $HGRCPATH <<EOF > [alias] > # should clobber ci but not commit (issue2993) > ci = version > myinit = init > mycommit = commit > optionalrepo = showconfig alias.myinit > cleanstatus = status -c > unknown = bargle > ambiguous = s > recursive = recursive > disabled = email > nodefinition = > noclosingquotation = ' > no--cwd = status --cwd elsewhere > no-R = status -R elsewhere > no--repo = status --repo elsewhere > no--repository = status --repository elsewhere > no--config = status --config a.config=1 > mylog = log > lognull = log -r null > shortlog = log --template '{rev} {node|short} | {date|isodate}\n' > positional = log --template '{\$2} {\$1} | {date|isodate}\n' > dln = lognull --debug > nousage = rollback > put = export -r 0 -o "\$FOO/%R.diff" > blank = !printf '\n' > self = !printf '\$0\n' > echoall = !printf '\$@\n' > echo1 = !printf '\$1\n' > echo2 = !printf '\$2\n' > echo13 = !printf '\$1 \$3\n' > echotokens = !printf "%s\n" "\$@" > count = !hg log -r "\$@" --template=. | wc -c | sed -e 's/ //g' > mcount = !hg log \$@ --template=. | wc -c | sed -e 's/ //g' > rt = root > tglog = log -G --template "{rev}:{node|short}: '{desc}' {branches}\n" > idalias = id > idaliaslong = id > idaliasshell = !echo test > parentsshell1 = !echo one > parentsshell2 = !echo two > escaped1 = !printf 'test\$\$test\n' > escaped2 = !sh -c 'echo "HGFOO is \$\$HGFOO"' > escaped3 = !sh -c 'echo "\$1 is \$\$\$1"' > escaped4 = !printf '\$\$0 \$\$@\n' > exit1 = !sh -c 'exit 1' > > [defaults] > mylog = -q > lognull = -q > log = -v > EOF basic $ hg myinit alias unknown $ hg unknown abort: alias 'unknown' resolves to unknown command 'bargle' [255] $ hg help unknown alias 'unknown' resolves to unknown command 'bargle' ambiguous $ hg ambiguous abort: alias 'ambiguous' resolves to ambiguous command 's' [255] $ hg help ambiguous alias 'ambiguous' resolves to ambiguous command 's' recursive $ hg recursive abort: alias 'recursive' resolves to unknown command 'recursive' [255] $ hg help recursive alias 'recursive' resolves to unknown command 'recursive' disabled $ hg disabled abort: alias 'disabled' resolves to unknown command 'email' ('email' is provided by 'patchbomb' extension) [255] $ hg help disabled alias 'disabled' resolves to unknown command 'email' 'email' is provided by the following extension: patchbomb command to send changesets as (a series of) patch emails (use 'hg help extensions' for information on enabling extensions) no definition $ hg nodef abort: no definition for alias 'nodefinition' [255] $ hg help nodef no definition for alias 'nodefinition' no closing quotation $ hg noclosing abort: error in definition for alias 'noclosingquotation': No closing quotation [255] $ hg help noclosing error in definition for alias 'noclosingquotation': No closing quotation invalid options $ hg no--cwd abort: error in definition for alias 'no--cwd': --cwd may only be given on the command line [255] $ hg help no--cwd error in definition for alias 'no--cwd': --cwd may only be given on the command line $ hg no-R abort: error in definition for alias 'no-R': -R may only be given on the command line [255] $ hg help no-R error in definition for alias 'no-R': -R may only be given on the command line $ hg no--repo abort: error in definition for alias 'no--repo': --repo may only be given on the command line [255] $ hg help no--repo error in definition for alias 'no--repo': --repo may only be given on the command line $ hg no--repository abort: error in definition for alias 'no--repository': --repository may only be given on the command line [255] $ hg help no--repository error in definition for alias 'no--repository': --repository may only be given on the command line $ hg no--config abort: error in definition for alias 'no--config': --config may only be given on the command line [255] optional repository #if no-outer-repo $ hg optionalrepo init #endif $ cd alias $ cat > .hg/hgrc <<EOF > [alias] > myinit = init -q > EOF $ hg optionalrepo init -q no usage $ hg nousage no rollback information available [1] $ echo foo > foo $ hg commit -Amfoo adding foo infer repository $ cd .. #if no-outer-repo $ hg shortlog alias/foo 0 e63c23eaa88a | 1970-01-01 00:00 +0000 #endif $ cd alias with opts $ hg cleanst C foo with opts and whitespace $ hg shortlog 0 e63c23eaa88a | 1970-01-01 00:00 +0000 positional arguments $ hg positional abort: too few arguments for command alias [255] $ hg positional a abort: too few arguments for command alias [255] $ hg positional 'node|short' rev 0 e63c23eaa88a | 1970-01-01 00:00 +0000 interaction with defaults $ hg mylog 0:e63c23eaa88a $ hg lognull -1:000000000000 properly recursive $ hg dln changeset: -1:0000000000000000000000000000000000000000 phase: public parent: -1:0000000000000000000000000000000000000000 parent: -1:0000000000000000000000000000000000000000 manifest: -1:0000000000000000000000000000000000000000 user: date: Thu Jan 01 00:00:00 1970 +0000 extra: branch=default path expanding $ FOO=`pwd` hg put $ cat 0.diff # HG changeset patch # User test # Date 0 0 # Thu Jan 01 00:00:00 1970 +0000 # Node ID e63c23eaa88ae77967edcf4ea194d31167c478b0 # Parent 0000000000000000000000000000000000000000 foo diff -r 000000000000 -r e63c23eaa88a foo --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/foo Thu Jan 01 00:00:00 1970 +0000 @@ -0,0 +1,1 @@ +foo simple shell aliases $ hg blank $ hg blank foo $ hg self self $ hg echoall $ hg echoall foo foo $ hg echoall 'test $2' foo test $2 foo $ hg echoall 'test $@' foo '$@' test $@ foo $@ $ hg echoall 'test "$@"' foo '"$@"' test "$@" foo "$@" $ hg echo1 foo bar baz foo $ hg echo2 foo bar baz bar $ hg echo13 foo bar baz test foo baz $ hg echo2 foo $ hg echotokens $ hg echotokens foo 'bar $1 baz' foo bar $1 baz $ hg echotokens 'test $2' foo test $2 foo $ hg echotokens 'test $@' foo '$@' test $@ foo $@ $ hg echotokens 'test "$@"' foo '"$@"' test "$@" foo "$@" $ echo bar > bar $ hg commit -qA -m bar $ hg count . 1 $ hg count 'branch(default)' 2 $ hg mcount -r '"branch(default)"' 2 $ hg tglog @ 1:042423737847: 'bar' | o 0:e63c23eaa88a: 'foo' shadowing $ hg i hg: command 'i' is ambiguous: idalias idaliaslong idaliasshell identify import incoming init [255] $ hg id 042423737847 tip $ hg ida hg: command 'ida' is ambiguous: idalias idaliaslong idaliasshell [255] $ hg idalias 042423737847 tip $ hg idaliasl 042423737847 tip $ hg idaliass test $ hg parentsshell hg: command 'parentsshell' is ambiguous: parentsshell1 parentsshell2 [255] $ hg parentsshell1 one $ hg parentsshell2 two shell aliases with global options $ hg init sub $ cd sub $ hg count 'branch(default)' abort: unknown revision 'default'! 0 $ hg -v count 'branch(default)' abort: unknown revision 'default'! 0 $ hg -R .. count 'branch(default)' abort: unknown revision 'default'! 0 $ hg --cwd .. count 'branch(default)' 2 $ hg echoall --cwd .. repo specific shell aliases $ cat >> .hg/hgrc <<EOF > [alias] > subalias = !echo sub > EOF $ cat >> ../.hg/hgrc <<EOF > [alias] > mainalias = !echo main > EOF shell alias defined in current repo $ hg subalias sub $ hg --cwd .. subalias > /dev/null hg: unknown command 'subalias' (did you mean idalias?) [255] $ hg -R .. subalias > /dev/null hg: unknown command 'subalias' (did you mean idalias?) [255] shell alias defined in other repo $ hg mainalias > /dev/null hg: unknown command 'mainalias' (did you mean idalias?) [255] $ hg -R .. mainalias main $ hg --cwd .. mainalias main typos get useful suggestions $ hg --cwd .. manalias hg: unknown command 'manalias' (did you mean one of idalias, mainalias, manifest?) [255] shell aliases with escaped $ chars $ hg escaped1 test$test $ hg escaped2 HGFOO is BAR $ hg escaped3 HGFOO HGFOO is BAR $ hg escaped4 test $0 $@ abbreviated name, which matches against both shell alias and the command provided extension, should be aborted. $ cat >> .hg/hgrc <<EOF > [extensions] > hgext.rebase = > EOF #if windows $ cat >> .hg/hgrc <<EOF > [alias] > rebate = !echo this is %HG_ARGS% > EOF #else $ cat >> .hg/hgrc <<EOF > [alias] > rebate = !echo this is \$HG_ARGS > EOF #endif $ hg reba hg: command 'reba' is ambiguous: rebase rebate [255] $ hg rebat this is rebate $ hg rebat --foo-bar this is rebate --foo-bar invalid arguments $ hg rt foo hg rt: invalid arguments hg rt alias for: hg root (use 'hg rt -h' to show more help) [255] invalid global arguments for normal commands, aliases, and shell aliases $ hg --invalid root hg: option --invalid not recognized Mercurial Distributed SCM basic commands: add add the specified files on the next commit annotate show changeset information by line for each file clone make a copy of an existing repository commit commit the specified files or all outstanding changes diff diff repository (or selected files) export dump the header and diffs for one or more changesets forget forget the specified files on the next commit init create a new repository in the given directory log show revision history of entire repository or files merge merge another revision into working directory pull pull changes from the specified source push push changes to the specified destination remove remove the specified files on the next commit serve start stand-alone webserver status show changed files in the working directory summary summarize working directory state update update working directory (or switch revisions) (use 'hg help' for the full list of commands or 'hg -v' for details) [255] $ hg --invalid mylog hg: option --invalid not recognized Mercurial Distributed SCM basic commands: add add the specified files on the next commit annotate show changeset information by line for each file clone make a copy of an existing repository commit commit the specified files or all outstanding changes diff diff repository (or selected files) export dump the header and diffs for one or more changesets forget forget the specified files on the next commit init create a new repository in the given directory log show revision history of entire repository or files merge merge another revision into working directory pull pull changes from the specified source push push changes to the specified destination remove remove the specified files on the next commit serve start stand-alone webserver status show changed files in the working directory summary summarize working directory state update update working directory (or switch revisions) (use 'hg help' for the full list of commands or 'hg -v' for details) [255] $ hg --invalid blank hg: option --invalid not recognized Mercurial Distributed SCM basic commands: add add the specified files on the next commit annotate show changeset information by line for each file clone make a copy of an existing repository commit commit the specified files or all outstanding changes diff diff repository (or selected files) export dump the header and diffs for one or more changesets forget forget the specified files on the next commit init create a new repository in the given directory log show revision history of entire repository or files merge merge another revision into working directory pull pull changes from the specified source push push changes to the specified destination remove remove the specified files on the next commit serve start stand-alone webserver status show changed files in the working directory summary summarize working directory state update update working directory (or switch revisions) (use 'hg help' for the full list of commands or 'hg -v' for details) [255] environment variable changes in alias commands $ cat > $TESTTMP/setcount.py <<EOF > import os > def uisetup(ui): > os.environ['COUNT'] = '2' > EOF $ cat >> $HGRCPATH <<'EOF' > [extensions] > setcount = $TESTTMP/setcount.py > [alias] > showcount = log -T "$COUNT\n" -r . > EOF $ COUNT=1 hg showcount 2 This should show id: $ hg --config alias.log='id' log 000000000000 tip This shouldn't: $ hg --config alias.log='id' history $ cd ../.. return code of command and shell aliases: $ hg mycommit -R alias nothing changed [1] $ hg exit1 [1] #if no-outer-repo $ hg root abort: no repository found in '$TESTTMP' (.hg not found)! [255] $ hg --config alias.hgroot='!hg root' hgroot abort: no repository found in '$TESTTMP' (.hg not found)! [255] #endif