tests/test-mq-qimport

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 > writelines.py <<EOF
import sys
path = sys.argv[1]
args = sys.argv[2:]
assert (len(args) % 2) == 0

f = file(path, 'wb')
for i in xrange(len(args)/2):
   count, s = args[2*i:2*i+2]
   count = int(count)
   s = s.decode('string_escape')
   f.write(s*count)
f.close()

EOF

echo "[extensions]" >> $HGRCPATH
echo "mq=" >> $HGRCPATH
echo "[diff]" >> $HGRCPATH
echo "git=1" >> $HGRCPATH

hg init repo
cd repo

echo % qimport non-existing-file
hg qimport non-existing-file

echo % import email
hg qimport --push -n email - <<EOF
From: Username in email <[e-mail]>
Subject: [PATCH] Message in email
Date: Fri, 02 Jan 1970 00:00:00 +0000

Text before patch.

# HG changeset patch
# User Username in patch <[e-mail]>
# Date 0 0
# Node ID 1a706973a7d84cb549823634a821d9bdf21c6220
# Parent  0000000000000000000000000000000000000000
First line of commit message.

More text in commit message.
--- confuse the diff detection

diff --git a/x b/x
new file mode 100644
--- /dev/null
+++ b/x
@@ -0,0 +1,1 @@
+new file
Text after patch.

EOF

echo % hg tip -v
hg tip -v
hg qpop
hg qdelete email

echo % import URL
echo foo >> foo
hg add foo
hg diff > $HGTMP/url.diff
hg revert --no-backup foo
rm foo
# Under unix: file:///foobar/blah
# Under windows: file:///c:/foobar/blah
patchurl=`echo "$HGTMP"/url.diff | tr '\\\\' /`
expr "$patchurl" : "\/" > /dev/null
if [ $? -ne 0 ]; then
    patchurl="/$patchurl"
fi
hg qimport file://"$patchurl"
hg qun

echo % import patch that already exists
echo foo2 >> foo
hg add foo
hg diff > ../url.diff
hg revert --no-backup foo
rm foo
hg qimport ../url.diff
hg qpush
cat foo
hg qpop
echo % qimport -f
hg qimport -f ../url.diff
hg qpush
cat foo
hg qpop

echo % build diff with CRLF
python ../writelines.py b 5 'a\n' 5 'a\r\n'
hg ci -Am addb
python ../writelines.py b 2 'a\n' 10 'b\n' 2 'a\r\n'
hg diff > b.diff
hg up -C
echo % qimport CRLF diff
hg qimport b.diff
hg qpush

echo % try to import --push
echo another >> b
hg diff > another.diff
hg up -C
hg qimport --push another.diff
hg qfin -a
hg qimport -rtip -P