util: extract compression code in `mercurial.utils.compression`
The code seems large enough to be worth extracting. This is similar to what was
done for various module in `mercurial/utils/`.
Since None of the compression logic takes a `ui` objet, issuing deprecation
warning is tricky. Luckly the logic does not seems to have many external users.
Path conflict checking is currently disabled by default because of issue5716.
Turn it on for this test.
$ cat >> $HGRCPATH << EOF
> [experimental]
> merge.checkpathconflicts=True
> EOF
$ hg init repo
$ cd repo
$ echo base > base
$ hg add base
$ hg commit -m "base"
$ hg bookmark -i base
$ mkdir a
$ echo 1 > a/b
$ hg add a/b
$ hg commit -m "file"
$ hg bookmark -i file
$ echo 2 > a/b
$ hg commit -m "file2"
$ hg bookmark -i file2
$ hg up 0
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ mkdir a
#if symlink
$ ln -s c a/b
#else
$ touch a/b
#endif
$ hg add a/b
$ hg commit -m "link"
created new head
$ hg bookmark -i link
$ hg up 0
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ mkdir -p a/b/c
$ echo 2 > a/b/c/d
$ hg add a/b/c/d
$ hg commit -m "dir"
created new head
$ hg bookmark -i dir
Update - local file conflicts with remote directory:
$ hg up -q 0
$ mkdir a
$ echo 9 > a/b
$ hg up dir
a/b: untracked file conflicts with directory
abort: untracked files in working directory differ from files in requested revision
[255]
$ hg up dir --config merge.checkunknown=warn
a/b: replacing untracked file
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
(activating bookmark dir)
$ cat a/b.orig
9
$ rm a/b.orig
Update - local symlink conflicts with remote directory:
$ hg up -q 0
$ mkdir a
#if symlink
$ ln -s x a/b
#else
$ touch a/b
#endif
$ hg up dir
a/b: untracked file conflicts with directory
abort: untracked files in working directory differ from files in requested revision
[255]
$ hg up dir --config merge.checkunknown=warn
a/b: replacing untracked file
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
(activating bookmark dir)
#if symlink
$ readlink.py a/b.orig
a/b.orig -> x
#endif
$ rm a/b.orig
Update - local directory conflicts with remote file
$ hg up -q 0
$ mkdir -p a/b/c
$ echo 9 > a/b/c/d
$ hg up file
a/b: untracked directory conflicts with file
abort: untracked files in working directory differ from files in requested revision
[255]
$ hg up file --config merge.checkunknown=warn
a/b: replacing untracked files in directory
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
(activating bookmark file)
$ cat a/b
1
$ test -d a/b.orig
$ rm -rf a/b.orig
Update - local directory conflicts with remote symlink
$ hg up -q 0
$ mkdir -p a/b/c
$ echo 9 > a/b/c/d
$ hg up link
a/b: untracked directory conflicts with file
abort: untracked files in working directory differ from files in requested revision
[255]
$ hg up link --config merge.checkunknown=warn
a/b: replacing untracked files in directory
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
(activating bookmark link)
#if symlink
$ readlink.py a/b
a/b -> c
#endif
$ test -d a/b.orig
$ rm -rf a/b.orig
Update - local renamed file conflicts with remote directory
$ hg up -q 0
$ hg mv base a
$ hg status -C
A a
base
R base
$ hg up --check dir
abort: uncommitted changes
[255]
$ hg up dir
a: path conflict - a file or link has the same name as a directory
the local file has been renamed to a~d20a80d4def3
resolve manually then use 'hg resolve --mark a'
1 files updated, 0 files merged, 0 files removed, 1 files unresolved
use 'hg resolve' to retry unresolved file merges
(activating bookmark dir)
[1]
$ hg status -C
A a~d20a80d4def3
base
R base
$ hg resolve --list
P a
$ hg up --clean -q 0
Update clean - local directory conflicts with changed remote file
$ hg up -q file
$ rm a/b
$ mkdir a/b
$ echo 9 > a/b/c
$ hg up file2 --check --config merge.checkunknown=warn
abort: uncommitted changes
[255]
$ hg up file2 --clean
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
(activating bookmark file2)