hgfixes: add a fixer to convert plain strings to bytestrings
This patch implements a 2to3 fixer that converts all plain strings in a python
source file to byte strings syntax. Example:
foo = 'Normal string'
would become
foo = b'Normal string'
The motivation behind this fixer can be found in
http://selenic.com/pipermail/mercurial-devel/2010-June/022363.html or, in other
words: the current hg source assumes that _most_ strings are "meant" to be byte
sequences, so it makes sense to make the convertion implemented by this patch.
As mentioned above, not all mercurial modules want to use strings as bytes,
examples include i18n (which uses unicode), and demandimport (in py3k, module
names are normal strings, thus unicode, and there's no need for a convertion).
Therefore, these modules are blacklisted in the fixer. There are also a few
functions that can take only unicode arguments, thus the convertion shouldn't
be done for those.
#!/bin/sh
# some implementations of cp can't create hardlinks
cat > cp.py <<EOF
from mercurial import util
import sys
util.copyfiles(sys.argv[1], sys.argv[2], hardlink=True)
EOF
# test hardlinking outside hg
mkdir x
echo foo > x/a
python cp.py x y
echo bar >> y/a
echo % no diff if hardlink
diff x/a y/a
# test mq hardlinking
echo "[extensions]" >> $HGRCPATH
echo "mq=" >> $HGRCPATH
echo % init
hg init a
cd a
hg qimport -n foo - << EOF
# HG changeset patch
# Date 1 0
diff -r 2588a8b53d66 a
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/a Wed Jul 23 15:54:29 2008 +0200
@@ -0,0 +1,1 @@
+a
EOF
hg qpush
cd ..
python cp.py a b
cd b
hg qimport -n bar - << EOF
# HG changeset patch
# Date 2 0
diff -r 2588a8b53d66 a
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/b Wed Jul 23 15:54:29 2008 +0200
@@ -0,0 +1,1 @@
+b
EOF
hg qpush
cat .hg/patches/status
echo %
cat .hg/patches/series
echo %%%
cat ../a/.hg/patches/status
echo %
cat ../a/.hg/patches/series
# test tags hardlinking
hg qdel -r qbase:qtip
hg tag -l lfoo
hg tag foo
cd ..
python cp.py b c
cd c
hg tag -l -r 0 lbar
hg tag -r 0 bar
echo %%%
cat .hgtags
echo %
cat .hg/localtags
echo %%%
cat ../b/.hgtags
echo %
cat ../b/.hg/localtags