convert: readd --filemap
To handle merges correctly, this revision adds a filemap_source class
that wraps a converter_source and does the work necessary to calculate
the subgraph we're interested in.
The wrapped converter_source must provide a new getchangedfiles method
that, given a revision rev, and an index N, returns the list of files
that are different in rev and its Nth parent.
The implementation depends on the ability to skip some revisions and to
change the parents field of the commit objects that we returned earlier.
To make the conversion restartable, we assume the revisons in the
revmapfile are topologically sorted.
#!/bin/sh
"$TESTDIR/hghave" symlink || exit 80
cleanpath()
{
sed -e "s:/.*\(/test-symlink-basic/.*\):...\1:"
}
cat >> readlink.py <<EOF
import os
import sys
for f in sys.argv[1:]:
print f, '->', os.readlink(f)
EOF
hg init a
cd a
ln -s nothing dangling
hg commit -m 'commit symlink without adding' -d '0 0' dangling 2>&1 | cleanpath
hg add dangling
hg commit -m 'add symlink' -d '0 0'
hg tip -v
hg manifest --debug
echo '% rev 0:'
python ../readlink.py dangling
rm dangling
ln -s void dangling
hg commit -m 'change symlink'
echo '% rev 1:'
python ../readlink.py dangling
echo '% modifying link'
rm dangling
ln -s empty dangling
python ../readlink.py dangling
echo '% reverting to rev 0:'
hg revert -r 0 -a
python ../readlink.py dangling
echo '% backups:'
python ../readlink.py *.orig
rm *.orig
hg up -C
echo '% copies'
hg cp -v dangling dangling2
hg st -Cmard
python ../readlink.py dangling dangling2