tests/test-convert-hg-source

log: remove increasing windows usage in fastpath

The purpose of increasing windows is to allow backwards iteration on the
filelog  at a reasonable cost.
But is it needed?
 - if follow is False, we have no reason to iterate backwards.
   We basically just want to walk the complete filelog and yield all revisions
   within the revision range. We can do this forward or
   backwards, as it only reads the index.
 - when follow is True, we need to examine the contents of the filelog, and to
   do this efficiently we need to read the filelog forward.
   And on the other hand, to track ancestors and copies, we need to process
   revisions backwards. But is it necessary to use increasing windows
   for this?
   We can iterate over the complete filelog forward, stack the revisions, and
   read the reversed(pile), it does the same thing with a more readable code.

#!/bin/sh

cat >> $HGRCPATH <<EOF
[extensions]
convert=
[convert]
hg.saverev=False
EOF

hg init orig
cd orig

echo foo > foo
echo bar > bar
hg ci -qAm 'add foo bar' -d '0 0'

echo >> foo
hg ci -m 'change foo' -d '1 0'

hg up -qC 0
hg copy --after --force foo bar
hg copy foo baz
hg ci -m 'make bar and baz copies of foo' -d '2 0'

hg merge
hg ci -m 'merge local copy' -d '3 0'

hg up -C 1
hg merge 2
hg ci -m 'merge remote copy' -d '4 0'

chmod +x baz
hg ci -m 'mark baz executable' -d '5 0'

cd ..
hg convert --datesort orig new 2>&1 | grep -v 'subversion python bindings could not be loaded'
cd new
hg out ../orig
cd ..

echo '% check shamap LF and CRLF handling'
cat > rewrite.py <<EOF
import sys
# Interlace LF and CRLF
lines = [(l.rstrip() + ((i % 2) and '\n' or '\r\n'))
         for i, l in enumerate(file(sys.argv[1]))]
file(sys.argv[1], 'wb').write(''.join(lines))
EOF
python rewrite.py new/.hg/shamap
cd orig
hg up -qC 1
echo foo >> foo
hg ci -qm 'change foo again'
hg up -qC 2
echo foo >> foo
hg ci -qm 'change foo again again'
cd ..
hg convert --datesort orig new 2>&1 | grep -v 'subversion python bindings could not be loaded'

echo % init broken repository
hg init broken
cd broken
echo a >> a
echo b >> b
hg ci -qAm init
echo a >> a
echo b >> b
hg copy b c
hg ci -qAm changeall
hg up -qC 0
echo bc >> b
hg ci -m changebagain
HGMERGE=internal:local hg -q merge
hg ci -m merge
hg mv b d
hg ci -m moveb
echo % break it
rm .hg/store/data/b.*
cd ..

hg --config convert.hg.ignoreerrors=True convert broken fixed
hg -R fixed verify
echo '% manifest -r 0'
hg -R fixed manifest -r 0
echo '% manifest -r tip'
hg -R fixed manifest -r tip

true