interfaces: introduce and use a protocol class for the `charencoding` module
See
f2832de2a46c for details when this was done for the `bdiff` module.
This lets us dump the hack where the `pure` implementation was imported during
the type checking phase to provide signatures for the module methods it
provides. Now the protocol classes are starting to shine, because these methods
are provided by `pure.charencoding` and `cext.parsers`, and references to
`cffi.charencoding` and `cext.charencoding` are forwarded to them as appropriate
by the `policy` module. But none of that matters, as long as the module
returned provides the listed methods.
The interface was copy/pasted from the `pure` module, but `jsonescapeu8fallback`
is omitted because it is accessed from the `pure` module directly when the
escaping fails in the primary module's `jsonescapeu8()`.
#require svn svn-bindings
$ filter_svn_output () {
> grep -E -v 'Committing|Updating|(^$)' | sed -e 's/done$//' || true
> }
$ cat <<EOF >> $HGRCPATH
> [extensions]
> convert =
> mq =
> EOF
$ SVNREPOPATH=`pwd`/svn-repo
$ SVNREPOURL="`"$PYTHON" $TESTDIR/svnurlof.py \"$SVNREPOPATH\"`"
$ svnadmin create "$SVNREPOPATH"
$ cat > "$SVNREPOPATH"/hooks/pre-revprop-change <<EOF
> #!/bin/sh
>
> REPOS="$1"
> REV="$2"
> USER="$3"
> PROPNAME="$4"
> ACTION="$5"
>
> if [ "$ACTION" = "M" -a "$PROPNAME" = "svn:log" ]; then exit 0; fi
> if [ "$ACTION" = "A" -a "$PROPNAME" = "hg:convert-branch" ]; then exit 0; fi
> if [ "$ACTION" = "A" -a "$PROPNAME" = "hg:convert-rev" ]; then exit 0; fi
>
> echo "Changing prohibited revision property" >&2
> exit 1
> EOF
$ chmod +x "$SVNREPOPATH"/hooks/pre-revprop-change
$ svn co "$SVNREPOURL" "$SVNREPOPATH"-wc
Checked out revision 0.
$ cd "$SVNREPOPATH"-wc
$ echo a > a
$ svn add a
A a
$ svn ci -m'added a' a | filter_svn_output
Adding a
Transmitting file data .
Committed revision 1.
$ cd ..
initial roundtrip
$ hg convert -s svn -d hg "$SVNREPOPATH"-wc "$SVNREPOPATH"-hg | grep -v initializing
scanning source...
sorting...
converting...
0 added a
$ hg convert -s hg -d svn "$SVNREPOPATH"-hg "$SVNREPOPATH"-wc
scanning source...
sorting...
converting...
second roundtrip should do nothing
$ hg convert -s svn -d hg "$SVNREPOPATH"-wc "$SVNREPOPATH"-hg
scanning source...
sorting...
converting...
$ hg convert -s hg -d svn "$SVNREPOPATH"-hg "$SVNREPOPATH"-wc
scanning source...
sorting...
converting...
new hg rev
$ hg clone "$SVNREPOPATH"-hg "$SVNREPOPATH"-work
updating to branch default
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cd "$SVNREPOPATH"-work
$ echo b > b
$ hg add b
$ hg ci -mb
adding an empty revision
$ hg qnew -m emtpy empty
$ hg qfinish -a
$ cd ..
echo hg to svn
$ hg --cwd "$SVNREPOPATH"-hg pull -q "$SVNREPOPATH"-work
$ hg convert -s hg -d svn "$SVNREPOPATH"-hg "$SVNREPOPATH"-wc
scanning source...
sorting...
converting...
1 b
0 emtpy
svn back to hg should do nothing
$ hg convert -s svn -d hg "$SVNREPOPATH"-wc "$SVNREPOPATH"-hg
scanning source...
sorting...
converting...
hg back to svn should do nothing
$ hg convert -s hg -d svn "$SVNREPOPATH"-hg "$SVNREPOPATH"-wc
scanning source...
sorting...
converting...
verify which shamap format we are storing and must be able to handle
$ cat svn-repo-hg/.hg/shamap
svn:????????-????-????-????-????????????@1 ???????????????????????????????????????? (glob)
svn:????????-????-????-????-????????????@2 ???????????????????????????????????????? (glob)
svn:????????-????-????-????-????????????@2 ???????????????????????????????????????? (glob)
$ cat svn-repo-wc/.svn/hg-shamap
???????????????????????????????????????? 1 (glob)
???????????????????????????????????????? svn:????????-????-????-????-????????????@2 (glob)
???????????????????????????????????????? svn:????????-????-????-????-????????????@2 (glob)