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.
% convert trunk and branches
initializing destination A-hg repository
scanning source...
sorting...
converting...
13 createtrunk
12 moved1
11 moved1
10 moved2
9 changeb and rm d2
8 changeb and rm d2
7 moved1again
6 moved1again
5 copyfilefrompast
4 copydirfrompast
3 add d3
2 copy dir and remove subdir
1 add d4old
0 rename d4old into d4new
o 13 rename d4old into d4new files: d4new/g d4old/g
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o 12 add d4old files: d4old/g
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o 11 copy dir and remove subdir files: d3/d31/e d4/d31/e d4/f
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o 10 add d3 files: d3/d31/e d3/f
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o 9 copydirfrompast files: d2/d
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o 8 copyfilefrompast files: d
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o 7 moved1again files: d1/b d1/c
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| o 6 moved1again files:
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o | 5 changeb and rm d2 files: d1/b d2/d
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| o 4 changeb and rm d2 files: b
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o | 3 moved2 files: d2/d
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o | 2 moved1 files: d1/b d1/c
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| o 1 moved1 files: b c
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o 0 createtrunk files:
% check move copy records
A d4new/g
d4old/g
R d4old/g
% check branches
default 13:
d1 6:
% convert files being replaced by directories
initializing destination hg-repo repository
scanning source...
sorting...
converting...
3 initial
2 clobber symlink
1 clobber1
0 clobber2
% manifest before
644 a
644 d/b
644 @ dlink
644 @ dlink2
644 dlink3
% manifest after clobber1
644 a/b
644 d/b
644 dlink/b
644 @ dlink2
644 dlink3
% manifest after clobber2
644 a/b
644 d/b
644 dlink/b
644 @ dlink2
644 @ dlink3
% try updating
% test convert progress bar
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initializing destination hg-progress repository
scanning source...
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converting...
3 initial
2 clobber symlink
1 clobber1
0 clobber2