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changegroup: introduce safeversion()...
changegroup: introduce safeversion() In a few places (at least repair.py and shelve.py), we want to find the best changegroup version that we can assume users of the repo will understand. For example, we choose version 01 by default, but if it's a generaldelta repo, we expect clients to support version 02 anyway, so we choose that for new bundles (for e.g. "hg strip"). Let's create a helper for this functionality in changegroup, so we can reuse it elsewhere later.
Gregory Szorc - - Load All Authors

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r27885:2370c661 default
r27929:3b2ac211 stable
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test-bundle-type.t
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$ cat << EOF >> $HGRCPATH
> [format]
> usegeneraldelta=yes
> EOF
bundle w/o type option
$ hg init t1
$ hg init t2
$ cd t1
$ echo blablablablabla > file.txt
$ hg ci -Ama
adding file.txt
$ hg log | grep summary
summary: a
$ hg bundle ../b1 ../t2
searching for changes
1 changesets found
$ cd ../t2
$ hg pull ../b1
pulling from ../b1
requesting all changes
adding changesets
adding manifests
adding file changes
added 1 changesets with 1 changes to 1 files
(run 'hg update' to get a working copy)
$ hg up
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg log | grep summary
summary: a
$ cd ..
test bundle types
$ for t in "None" "bzip2" "gzip" "none-v2" "v2" "v1" "gzip-v1"; do
> echo % test bundle type $t
> hg init t$t
> cd t1
> hg bundle -t $t ../b$t ../t$t
> f -q -B6 -D ../b$t; echo
> cd ../t$t
> hg debugbundle ../b$t
> hg debugbundle --spec ../b$t
> echo
> cd ..
> done
% test bundle type None
searching for changes
1 changesets found
HG20\x00\x00 (esc)
Stream params: {}
changegroup -- "{'version': '02'}"
c35a0f9217e65d1fdb90c936ffa7dbe679f83ddf
none-v2
% test bundle type bzip2
searching for changes
1 changesets found
HG20\x00\x00 (esc)
Stream params: {'Compression': 'BZ'}
changegroup -- "{'version': '02'}"
c35a0f9217e65d1fdb90c936ffa7dbe679f83ddf
bzip2-v2
% test bundle type gzip
searching for changes
1 changesets found
HG20\x00\x00 (esc)
Stream params: {'Compression': 'GZ'}
changegroup -- "{'version': '02'}"
c35a0f9217e65d1fdb90c936ffa7dbe679f83ddf
gzip-v2
% test bundle type none-v2
searching for changes
1 changesets found
HG20\x00\x00 (esc)
Stream params: {}
changegroup -- "{'version': '02'}"
c35a0f9217e65d1fdb90c936ffa7dbe679f83ddf
none-v2
% test bundle type v2
searching for changes
1 changesets found
HG20\x00\x00 (esc)
Stream params: {'Compression': 'BZ'}
changegroup -- "{'version': '02'}"
c35a0f9217e65d1fdb90c936ffa7dbe679f83ddf
bzip2-v2
% test bundle type v1
searching for changes
1 changesets found
HG10BZ
c35a0f9217e65d1fdb90c936ffa7dbe679f83ddf
bzip2-v1
% test bundle type gzip-v1
searching for changes
1 changesets found
HG10GZ
c35a0f9217e65d1fdb90c936ffa7dbe679f83ddf
gzip-v1
test garbage file
$ echo garbage > bgarbage
$ hg init tgarbage
$ cd tgarbage
$ hg pull ../bgarbage
pulling from ../bgarbage
abort: ../bgarbage: not a Mercurial bundle
[255]
$ cd ..
test invalid bundle type
$ cd t1
$ hg bundle -a -t garbage ../bgarbage
abort: garbage is not a recognized bundle specification
(see "hg help bundle" for supported values for --type)
[255]
$ cd ..