exchange: refactor bundle specification parsing
The old code was tailored to `hg bundle` usage and not appropriate for
use as a general API, which clone bundles will require. The code has
been rewritten to make it more generally suitable.
We introduce dedicated error types to represent invalid and unsupported
bundle specifications. The reason we need dedicated error types (rather
than error.Abort) is because clone bundles will want to catch these
exception as part of filtering entries. We don't want to swallow
error.Abort on principle.
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$t
> cut -b 1-6 ../b$t | head -n 1
> cd ../t$t
> hg debugbundle ../b$t
> echo
> cd ..
> done
% test bundle type None
searching for changes
1 changesets found
HG10UN
c35a0f9217e65d1fdb90c936ffa7dbe679f83ddf
% test bundle type bzip2
searching for changes
1 changesets found
HG10BZ
c35a0f9217e65d1fdb90c936ffa7dbe679f83ddf
% test bundle type gzip
searching for changes
1 changesets found
HG10GZ
c35a0f9217e65d1fdb90c936ffa7dbe679f83ddf
% test bundle type none-v2
searching for changes
1 changesets found
HG20\x00\x00 (esc)
Stream params: {}
changegroup -- "{'version': '02'}"
c35a0f9217e65d1fdb90c936ffa7dbe679f83ddf
% test bundle type v2
searching for changes
1 changesets found
HG20\x00\x00 (esc)
Stream params: {'Compression': 'BZ'}
changegroup -- "{'version': '02'}"
c35a0f9217e65d1fdb90c936ffa7dbe679f83ddf
% test bundle type v1
searching for changes
1 changesets found
HG10BZ
c35a0f9217e65d1fdb90c936ffa7dbe679f83ddf
% test bundle type gzip-v1
searching for changes
1 changesets found
HG10GZ
c35a0f9217e65d1fdb90c936ffa7dbe679f83ddf
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 ..