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patch: support diff data loss detection and upgrade...
patch: support diff data loss detection and upgrade In worst case, generating diff in upgrade mode can be two times more expensive than generating it in git mode directly: we may have to regenerate the whole diff again whenever a git feature is detected. Also, the first diff attempt is completely buffered instead of being streamed. That said, even without having profiled it yet, I am convinced we can fast-path the upgrade mode if necessary were it to be used in regular diff commands, and not only in mq where avoiding data loss is worth the price.

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r10154:d4a62b6d stable
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test-static-http
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#!/bin/sh
cp "$TESTDIR"/printenv.py .
hg clone http://localhost:$HGPORT/ copy
echo $?
test -d copy || echo copy: No such file or directory
# This server doesn't do range requests so it's basically only good for
# one pull
cat > dumb.py <<EOF
import BaseHTTPServer, SimpleHTTPServer, os, signal
def run(server_class=BaseHTTPServer.HTTPServer,
handler_class=SimpleHTTPServer.SimpleHTTPRequestHandler):
server_address = ('localhost', int(os.environ['HGPORT']))
httpd = server_class(server_address, handler_class)
httpd.serve_forever()
signal.signal(signal.SIGTERM, lambda x: sys.exit(0))
run()
EOF
python dumb.py 2>/dev/null &
echo $! >> $DAEMON_PIDS
mkdir remote
cd remote
hg init
echo foo > bar
hg add bar
hg commit -m"test" -d "1000000 0"
hg tip
cd ..
hg clone static-http://localhost:$HGPORT/remote local | sed -e 's,:[0-9][0-9]*/,/,'
cd local
hg verify
cat bar
cd ../remote
echo baz > quux
hg commit -A -mtest2 -d '100000000 0'
cd ../local
echo '[hooks]' >> .hg/hgrc
echo 'changegroup = python ../printenv.py changegroup' >> .hg/hgrc
hg pull | sed -e 's,:[0-9][0-9]*/,/,'
echo '% trying to push'
hg update
echo more foo >> bar
hg commit -m"test" -d "100000000 0"
hg push | sed -e 's,:[0-9][0-9]*/,/,'
echo '% test with "/" URI (issue 747)'
cd ..
hg init
echo a > a
hg add a
hg ci -ma
hg clone static-http://localhost:$HGPORT/ local2 | sed -e 's,:[0-9][0-9]*/,/,'
cd local2
hg verify
cat a
hg paths | sed -e 's,:[0-9][0-9]*/,/,'
echo '% test with empty repo (issue965)'
cd ..
hg init remotempty
hg clone static-http://localhost:$HGPORT/remotempty local3 | sed -e 's,:[0-9][0-9]*/,/,'
cd local3
hg verify
hg paths | sed -e 's,:[0-9][0-9]*/,/,'
echo '% test with non-repo'
cd ..
mkdir notarepo
hg clone static-http://localhost:$HGPORT/notarepo local3 2>&1 | sed -e 's,:[0-9][0-9]*/,/,'
kill $!