procutil: make stream detection in make_line_buffered more correct and strict
In make_line_buffered(), we don’t want to wrap the stream if we know that lines
get flushed to the underlying raw stream already.
Previously, the heuristic was too optimistic. It assumed that any stream which
is not an instance of io.BufferedIOBase doesn’t need wrapping. However, there
are buffered streams that aren’t instances of io.BufferedIOBase, like
Mercurial’s own winstdout.
The new logic is different in two ways:
First, only for the check, if unwraps any combination of WriteAllWrapper and
winstdout.
Second, it skips wrapping the stream only if it is an instance of io.RawIOBase
(or already wrapped). If it is an instance of io.BufferedIOBase, it gets
wrapped. In any other case, the function raises an exception. This ensures
that, if an unknown stream is passed or we add another wrapper in the future,
we don’t wrap the stream if it’s already line buffered or not wrap the stream
if it’s not line buffered. In fact, this was already helpful during development
of this change. Without it, I possibly would have forgot that WriteAllWrapper
needs to be ignored for the check, leading to unnecessary wrapping if stdout is
unbuffered.
The alternative would have been to always wrap unknown streams. However, I
don’t think that anyone would benefit from being less strict. We can expect
streams from the standard library to be subclassing either io.RawIOBase or
io.BufferedIOBase, so running Mercurial in the standard way should not regress
by this change. Py2exe might replace sys.stdout and sys.stderr, but that
currently breaks Mercurial anyway and also these streams don’t claim to be
interactive, so this function is not called for them.
$ fileset() {
> hg debugfileset --all-files "$@"
> }
$ hg init repo
$ cd repo
$ echo a > a1
$ echo a > a2
$ echo b > b1
$ echo b > b2
$ hg ci -Am addfiles
adding a1
adding a2
adding b1
adding b2
Test operators and basic patterns
$ fileset -v a1
(symbol 'a1')
* matcher:
<patternmatcher patterns='a1$'>
a1
$ fileset -v 'a*'
(symbol 'a*')
* matcher:
<patternmatcher patterns='a[^/]*$'>
a1
a2
$ fileset -v '"re:a\d"'
(string 're:a\\d')
* matcher:
<patternmatcher patterns='a\\d'>
a1
a2
$ fileset -v '!re:"a\d"'
(not
(kindpat
(symbol 're')
(string 'a\\d')))
* matcher:
<predicatenmatcher
pred=<not
<patternmatcher patterns='a\\d'>>>
b1
b2
$ fileset -v 'path:a1 or glob:b?'
(or
(kindpat
(symbol 'path')
(symbol 'a1'))
(kindpat
(symbol 'glob')
(symbol 'b?')))
* matcher:
<patternmatcher patterns='a1(?:/|$)|b.$'>
a1
b1
b2
$ fileset -v --no-show-matcher 'a1 or a2'
(or
(symbol 'a1')
(symbol 'a2'))
a1
a2
$ fileset 'a1 | a2'
a1
a2
$ fileset 'a* and "*1"'
a1
$ fileset 'a* & "*1"'
a1
$ fileset 'not (r"a*")'
b1
b2
$ fileset '! ("a*")'
b1
b2
$ fileset 'a* - a1'
a2
$ fileset 'a_b'
$ fileset '"\xy"'
hg: parse error: invalid \x escape* (glob)
[10]
Test invalid syntax
$ fileset -v '"added"()'
(func
(string 'added')
None)
hg: parse error: not a symbol
[10]
$ fileset -v '()()'
(func
(group
None)
None)
hg: parse error: not a symbol
[10]
$ fileset -v -- '-x'
(negate
(symbol 'x'))
hg: parse error: can't use negate operator in this context
[10]
$ fileset -v -- '-()'
(negate
(group
None))
hg: parse error: can't use negate operator in this context
[10]
$ fileset -p parsed 'a, b, c'
* parsed:
(list
(symbol 'a')
(symbol 'b')
(symbol 'c'))
hg: parse error: can't use a list in this context
(see 'hg help "filesets.x or y"')
[10]
$ fileset '"path":.'
hg: parse error: not a symbol
[10]
$ fileset 'path:foo bar'
hg: parse error at 9: invalid token
[10]
$ fileset 'foo:bar:baz'
hg: parse error: not a symbol
[10]
$ fileset 'foo:bar()'
hg: parse error: pattern must be a string
[10]
$ fileset 'foo:bar'
hg: parse error: invalid pattern kind: foo
[10]
Show parsed tree at stages:
$ fileset -p unknown a
abort: invalid stage name: unknown
[255]
$ fileset -p parsed 'path:a1 or glob:b?'
* parsed:
(or
(kindpat
(symbol 'path')
(symbol 'a1'))
(kindpat
(symbol 'glob')
(symbol 'b?')))
a1
b1
b2
$ fileset -p all -s 'a1 or a2 or (grep("b") & clean())'
* parsed:
(or
(symbol 'a1')
(symbol 'a2')
(group
(and
(func
(symbol 'grep')
(string 'b'))
(func
(symbol 'clean')
None))))
* analyzed:
(or
(symbol 'a1')
(symbol 'a2')
(and
(func
(symbol 'grep')
(string 'b'))
(withstatus
(func
(symbol 'clean')
None)
(string 'clean'))))
* optimized:
(or
(patterns
(symbol 'a1')
(symbol 'a2'))
(and
(withstatus
(func
(symbol 'clean')
None)
(string 'clean'))
(func
(symbol 'grep')
(string 'b'))))
* matcher:
<unionmatcher matchers=[
<patternmatcher patterns='a1$|a2$'>,
<intersectionmatcher
m1=<predicatenmatcher pred=clean>,
m2=<predicatenmatcher pred=grep('b')>>]>
a1
a2
b1
b2
Union of basic patterns:
$ fileset -p optimized -s -r. 'a1 or a2 or path:b1'
* optimized:
(patterns
(symbol 'a1')
(symbol 'a2')
(kindpat
(symbol 'path')
(symbol 'b1')))
* matcher:
<patternmatcher patterns='a1$|a2$|b1(?:/|$)'>
a1
a2
b1
OR expression should be reordered by weight:
$ fileset -p optimized -s -r. 'grep("a") or a1 or grep("b") or b2'
* optimized:
(or
(patterns
(symbol 'a1')
(symbol 'b2'))
(func
(symbol 'grep')
(string 'a'))
(func
(symbol 'grep')
(string 'b')))
* matcher:
<unionmatcher matchers=[
<patternmatcher patterns='a1$|b2$'>,
<predicatenmatcher pred=grep('a')>,
<predicatenmatcher pred=grep('b')>]>
a1
a2
b1
b2
Use differencematcher for 'x and not y':
$ fileset -p optimized -s 'a* and not a1'
* optimized:
(minus
(symbol 'a*')
(symbol 'a1'))
* matcher:
<differencematcher
m1=<patternmatcher patterns='a[^/]*$'>,
m2=<patternmatcher patterns='a1$'>>
a2
$ fileset -p optimized -s '!binary() and a*'
* optimized:
(minus
(symbol 'a*')
(func
(symbol 'binary')
None))
* matcher:
<differencematcher
m1=<patternmatcher patterns='a[^/]*$'>,
m2=<predicatenmatcher pred=binary>>
a1
a2
'x - y' is rewritten to 'x and not y' first so the operands can be reordered:
$ fileset -p analyzed -p optimized -s 'a* - a1'
* analyzed:
(and
(symbol 'a*')
(not
(symbol 'a1')))
* optimized:
(minus
(symbol 'a*')
(symbol 'a1'))
* matcher:
<differencematcher
m1=<patternmatcher patterns='a[^/]*$'>,
m2=<patternmatcher patterns='a1$'>>
a2
$ fileset -p analyzed -p optimized -s 'binary() - a*'
* analyzed:
(and
(func
(symbol 'binary')
None)
(not
(symbol 'a*')))
* optimized:
(and
(not
(symbol 'a*'))
(func
(symbol 'binary')
None))
* matcher:
<intersectionmatcher
m1=<predicatenmatcher
pred=<not
<patternmatcher patterns='a[^/]*$'>>>,
m2=<predicatenmatcher pred=binary>>
Test files status
$ rm a1
$ hg rm a2
$ echo b >> b2
$ hg cp b1 c1
$ echo c > c2
$ echo c > c3
$ cat > .hgignore <<EOF
> \.hgignore
> 2$
> EOF
$ fileset 'modified()'
b2
$ fileset 'added()'
c1
$ fileset 'removed()'
a2
$ fileset 'deleted()'
a1
$ fileset 'missing()'
a1
$ fileset 'unknown()'
c3
$ fileset 'ignored()'
.hgignore
c2
$ fileset 'hgignore()'
.hgignore
a2
b2
c2
$ fileset 'clean()'
b1
$ fileset 'copied()'
c1
Test files status in different revisions
$ hg status -m
M b2
$ fileset -r0 'revs("wdir()", modified())' --traceback
b2
$ hg status -a
A c1
$ fileset -r0 'revs("wdir()", added())'
c1
$ hg status --change 0 -a
A a1
A a2
A b1
A b2
$ hg status -mru
M b2
R a2
? c3
$ fileset -r0 'added() and revs("wdir()", modified() or removed() or unknown())'
a2
b2
$ fileset -r0 'added() or revs("wdir()", added())'
a1
a2
b1
b2
c1
Test insertion of status hints
$ fileset -p optimized 'added()'
* optimized:
(withstatus
(func
(symbol 'added')
None)
(string 'added'))
c1
$ fileset -p optimized 'a* & removed()'
* optimized:
(and
(symbol 'a*')
(withstatus
(func
(symbol 'removed')
None)
(string 'removed')))
a2
$ fileset -p optimized 'a* - removed()'
* optimized:
(minus
(symbol 'a*')
(withstatus
(func
(symbol 'removed')
None)
(string 'removed')))
a1
$ fileset -p analyzed -p optimized '(added() + removed()) - a*'
* analyzed:
(and
(withstatus
(or
(func
(symbol 'added')
None)
(func
(symbol 'removed')
None))
(string 'added removed'))
(not
(symbol 'a*')))
* optimized:
(and
(not
(symbol 'a*'))
(withstatus
(or
(func
(symbol 'added')
None)
(func
(symbol 'removed')
None))
(string 'added removed')))
c1
$ fileset -p optimized 'a* + b* + added() + unknown()'
* optimized:
(withstatus
(or
(patterns
(symbol 'a*')
(symbol 'b*'))
(func
(symbol 'added')
None)
(func
(symbol 'unknown')
None))
(string 'added unknown'))
a1
a2
b1
b2
c1
c3
$ fileset -p analyzed -p optimized 'removed() & missing() & a*'
* analyzed:
(and
(withstatus
(and
(func
(symbol 'removed')
None)
(func
(symbol 'missing')
None))
(string 'removed missing'))
(symbol 'a*'))
* optimized:
(and
(symbol 'a*')
(withstatus
(and
(func
(symbol 'removed')
None)
(func
(symbol 'missing')
None))
(string 'removed missing')))
$ fileset -p optimized 'clean() & revs(0, added())'
* optimized:
(and
(withstatus
(func
(symbol 'clean')
None)
(string 'clean'))
(func
(symbol 'revs')
(list
(symbol '0')
(withstatus
(func
(symbol 'added')
None)
(string 'added')))))
b1
$ fileset -p optimized 'clean() & status(null, 0, b* & added())'
* optimized:
(and
(withstatus
(func
(symbol 'clean')
None)
(string 'clean'))
(func
(symbol 'status')
(list
(symbol 'null')
(symbol '0')
(and
(symbol 'b*')
(withstatus
(func
(symbol 'added')
None)
(string 'added'))))))
b1
Test files properties
>>> open('bin', 'wb').write(b'\0a') and None
$ fileset 'binary()'
bin
$ fileset 'binary() and unknown()'
bin
$ echo '^bin$' >> .hgignore
$ fileset 'binary() and ignored()'
bin
$ hg add bin
$ fileset 'binary()'
bin
$ fileset -p optimized -s 'binary() and b*'
* optimized:
(and
(symbol 'b*')
(func
(symbol 'binary')
None))
* matcher:
<intersectionmatcher
m1=<patternmatcher patterns='b[^/]*$'>,
m2=<predicatenmatcher pred=binary>>
bin
$ fileset 'grep("b{1}")'
.hgignore
b1
b2
c1
$ fileset 'grep("missingparens(")'
hg: parse error: invalid match pattern: (unbalanced parenthesis|missing \)).* (re)
[10]
#if execbit
$ chmod +x b2
$ fileset 'exec()'
b2
#endif
#if symlink
$ ln -s b2 b2link
$ fileset 'symlink() and unknown()'
b2link
$ hg add b2link
#endif
#if no-windows
$ echo foo > con.xml
$ fileset 'not portable()'
con.xml
$ hg --config ui.portablefilenames=ignore add con.xml
#endif
>>> open('1k', 'wb').write(b' '*1024) and None
>>> open('2k', 'wb').write(b' '*2048) and None
$ hg add 1k 2k
$ fileset 'size("bar")'
hg: parse error: couldn't parse size: bar
[10]
$ fileset '(1k, 2k)'
hg: parse error: can't use a list in this context
(see 'hg help "filesets.x or y"')
[10]
$ fileset 'size(1k)'
1k
$ fileset '(1k or 2k) and size("< 2k")'
1k
$ fileset '(1k or 2k) and size("<=2k")'
1k
2k
$ fileset '(1k or 2k) and size("> 1k")'
2k
$ fileset '(1k or 2k) and size(">=1K")'
1k
2k
$ fileset '(1k or 2k) and size(".5KB - 1.5kB")'
1k
$ fileset 'size("1M")'
$ fileset 'size("1 GB")'
Test merge states
$ hg ci -m manychanges
$ hg file -r . 'set:copied() & modified()'
[1]
$ hg up -C 0
* files updated, 0 files merged, * files removed, 0 files unresolved (glob)
$ echo c >> b2
$ hg ci -m diverging b2
created new head
$ fileset 'resolved()'
$ fileset 'unresolved()'
$ hg merge
merging b2
warning: conflicts while merging b2! (edit, then use 'hg resolve --mark')
* files updated, 0 files merged, 1 files removed, 1 files unresolved (glob)
use 'hg resolve' to retry unresolved file merges or 'hg merge --abort' to abandon
[1]
$ fileset 'resolved()'
$ fileset 'unresolved()'
b2
$ echo e > b2
$ hg resolve -m b2
(no more unresolved files)
$ fileset 'resolved()'
b2
$ fileset 'unresolved()'
$ hg ci -m merge
Test subrepo predicate
$ hg init sub
$ echo a > sub/suba
$ hg -R sub add sub/suba
$ hg -R sub ci -m sub
$ echo 'sub = sub' > .hgsub
$ hg init sub2
$ echo b > sub2/b
$ hg -R sub2 ci -Am sub2
adding b
$ echo 'sub2 = sub2' >> .hgsub
$ fileset 'subrepo()'
$ hg add .hgsub
$ fileset 'subrepo()'
sub
sub2
$ fileset 'subrepo("sub")'
sub
$ fileset 'subrepo("glob:*")'
sub
sub2
$ hg ci -m subrepo
Test that .hgsubstate is updated as appropriate during a conversion. The
saverev property is enough to alter the hashes of the subrepo.
$ hg init ../converted
$ hg --config extensions.convert= convert --config convert.hg.saverev=True \
> sub ../converted/sub
initializing destination ../converted/sub repository
scanning source...
sorting...
converting...
0 sub
$ hg clone -U sub2 ../converted/sub2
$ hg --config extensions.convert= convert --config convert.hg.saverev=True \
> . ../converted
scanning source...
sorting...
converting...
4 addfiles
3 manychanges
2 diverging
1 merge
0 subrepo
no ".hgsubstate" updates will be made for "sub2"
$ hg up -q -R ../converted -r tip
$ hg --cwd ../converted cat sub/suba sub2/b -r tip
a
b
$ oldnode=`hg log -r tip -T "{node}\n"`
$ newnode=`hg log -R ../converted -r tip -T "{node}\n"`
$ [ "$oldnode" != "$newnode" ] || echo "nothing changed"
Test with a revision
$ hg log -G --template '{rev} {desc}\n'
@ 4 subrepo
|
o 3 merge
|\
| o 2 diverging
| |
o | 1 manychanges
|/
o 0 addfiles
$ echo unknown > unknown
$ fileset -r1 'modified()'
b2
$ fileset -r1 'added() and c1'
c1
$ fileset -r1 'removed()'
a2
$ fileset -r1 'deleted()'
$ fileset -r1 'unknown()'
$ fileset -r1 'ignored()'
$ fileset -r1 'hgignore()'
.hgignore
a2
b2
bin
c2
sub2
$ fileset -r1 'binary()'
bin
$ fileset -r1 'size(1k)'
1k
$ fileset -r3 'resolved()'
$ fileset -r3 'unresolved()'
#if execbit
$ fileset -r1 'exec()'
b2
#endif
#if symlink
$ fileset -r1 'symlink()'
b2link
#endif
#if no-windows
$ fileset -r1 'not portable()'
con.xml
$ hg forget 'con.xml'
#endif
$ fileset -r4 'subrepo("re:su.*")'
sub
sub2
$ fileset -r4 'subrepo(re:su.*)'
sub
sub2
$ fileset -r4 'subrepo("sub")'
sub
$ fileset -r4 'b2 or c1'
b2
c1
>>> open('dos', 'wb').write(b"dos\r\n") and None
>>> open('mixed', 'wb').write(b"dos\r\nunix\n") and None
>>> open('mac', 'wb').write(b"mac\r") and None
$ hg add dos mixed mac
(remove a1, to examine safety of 'eol' on removed files)
$ rm a1
$ fileset 'eol(dos)'
dos
mixed
$ fileset 'eol(unix)'
.hgignore
.hgsub
.hgsubstate
b1
b2
b2.orig
c1
c2
c3
con.xml (no-windows !)
mixed
unknown
$ fileset 'eol(mac)'
mac
Test safety of 'encoding' on removed files
$ fileset 'encoding("ascii")'
.hgignore
.hgsub
.hgsubstate
1k
2k
b1
b2
b2.orig
b2link (symlink !)
bin
c1
c2
c3
con.xml (no-windows !)
dos
mac
mixed
unknown
Test 'revs(...)'
================
small reminder of the repository state
$ hg log -G
@ changeset: 4:* (glob)
| tag: tip
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: subrepo
|
o changeset: 3:* (glob)
|\ parent: 2:55b05bdebf36
| | parent: 1:* (glob)
| | user: test
| | date: Thu Jan 01 00:00:00 1970 +0000
| | summary: merge
| |
| o changeset: 2:55b05bdebf36
| | parent: 0:8a9576c51c1f
| | user: test
| | date: Thu Jan 01 00:00:00 1970 +0000
| | summary: diverging
| |
o | changeset: 1:* (glob)
|/ user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: manychanges
|
o changeset: 0:8a9576c51c1f
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: addfiles
$ hg status --change 0
A a1
A a2
A b1
A b2
$ hg status --change 1
M b2
A 1k
A 2k
A b2link (symlink !)
A bin
A c1
A con.xml (no-windows !)
R a2
$ hg status --change 2
M b2
$ hg status --change 3
M b2
A 1k
A 2k
A b2link (symlink !)
A bin
A c1
A con.xml (no-windows !)
R a2
$ hg status --change 4
A .hgsub
A .hgsubstate
$ hg status
A dos
A mac
A mixed
R con.xml (no-windows !)
! a1
? b2.orig
? c3
? unknown
Test files at -r0 should be filtered by files at wdir
-----------------------------------------------------
$ fileset -r0 'tracked() and revs("wdir()", tracked())'
a1
b1
b2
Test that "revs()" work at all
------------------------------
$ fileset "revs('2', modified())"
b2
Test that "revs()" work for file missing in the working copy/current context
----------------------------------------------------------------------------
(a2 not in working copy)
$ fileset "revs('0', added())"
a1
a2
b1
b2
(none of the file exist in "0")
$ fileset -r 0 "revs('4', added())"
.hgsub
.hgsubstate
Call with empty revset
--------------------------
$ fileset "revs('2-2', modified())"
Call with revset matching multiple revs
---------------------------------------
$ fileset "revs('0+4', added())"
.hgsub
.hgsubstate
a1
a2
b1
b2
overlapping set
$ fileset "revs('1+2', modified())"
b2
test 'status(...)'
=================
Simple case
-----------
$ fileset "status(3, 4, added())"
.hgsub
.hgsubstate
use rev to restrict matched file
-----------------------------------------
$ hg status --removed --rev 0 --rev 1
R a2
$ fileset "status(0, 1, removed())"
a2
$ fileset "tracked() and status(0, 1, removed())"
$ fileset -r 4 "status(0, 1, removed())"
a2
$ fileset -r 4 "tracked() and status(0, 1, removed())"
$ fileset "revs('4', tracked() and status(0, 1, removed()))"
$ fileset "revs('0', tracked() and status(0, 1, removed()))"
a2
check wdir()
------------
$ hg status --removed --rev 4
R con.xml (no-windows !)
$ fileset "status(4, 'wdir()', removed())"
con.xml (no-windows !)
$ hg status --removed --rev 2
R a2
$ fileset "status('2', 'wdir()', removed())"
a2
test backward status
--------------------
$ hg status --removed --rev 0 --rev 4
R a2
$ hg status --added --rev 4 --rev 0
A a2
$ fileset "status(4, 0, added())"
a2
test cross branch status
------------------------
$ hg status --added --rev 1 --rev 2
A a2
$ fileset "status(1, 2, added())"
a2
test with multi revs revset
---------------------------
$ hg status --added --rev 0:1 --rev 3:4
A .hgsub
A .hgsubstate
A 1k
A 2k
A b2link (symlink !)
A bin
A c1
A con.xml (no-windows !)
$ fileset "status('0:1', '3:4', added())"
.hgsub
.hgsubstate
1k
2k
b2link (symlink !)
bin
c1
con.xml (no-windows !)
tests with empty value
----------------------
Fully empty revset
$ fileset "status('', '4', added())"
hg: parse error: first argument to status must be a revision
[10]
$ fileset "status('2', '', added())"
hg: parse error: second argument to status must be a revision
[10]
Empty revset will error at the revset layer
$ fileset "status(' ', '4', added())"
hg: parse error at 1: not a prefix: end
(
^ here)
[10]
$ fileset "status('2', ' ', added())"
hg: parse error at 1: not a prefix: end
(
^ here)
[10]