Mercurial > hg
annotate contrib/hgfixes/fix_bytesmod.py @ 16836:1ba3e17186c8
hg-ssh: read-only flag
Allows you to restrict a ssh key to have read-only access to a set of
repos by passing the --read-only flag to hg-ssh.
This is useful in an environment where the number of unix users you
can or are willing to create is limited. In such an environment,
multiple users or applications will share a single unix account. Some
of those applications will likely need read-only access to the
repository. This change makes it possible to grant them such access
without requiring that they use a separate unix account.
author | David Schleimer <dschleimer@fb.com> |
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date | Tue, 22 May 2012 15:17:37 -0700 |
parents | e627fef94604 |
children | 681f7b9213a4 |
rev | line source |
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1 """Fixer that changes bytes % whatever to a function that actually formats |
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2 it.""" |
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3 |
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4 from lib2to3 import fixer_base |
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5 from lib2to3.fixer_util import is_tuple, Call, Comma, Name, touch_import |
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6 |
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7 # XXX: Implementing a blacklist in 2to3 turned out to be more troublesome than |
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8 # blacklisting some modules inside the fixers. So, this is what I came with. |
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9 |
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10 blacklist = ['mercurial/demandimport.py', |
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11 'mercurial/py3kcompat.py', |
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12 'mercurial/i18n.py', |
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13 ] |
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14 |
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15 def isnumberremainder(formatstr, data): |
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16 try: |
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17 if data.value.isdigit(): |
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18 return True |
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19 except AttributeError: |
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20 return False |
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21 |
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22 class FixBytesmod(fixer_base.BaseFix): |
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23 # XXX: There's one case (I suppose) I can't handle: when a remainder |
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24 # operation like foo % bar is performed, I can't really know what the |
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25 # contents of foo and bar are. I believe the best approach is to "correct" |
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26 # the to-be-converted code and let bytesformatter handle that case in |
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27 # runtime. |
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28 PATTERN = ''' |
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29 term< formatstr=STRING '%' data=STRING > | |
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30 term< formatstr=STRING '%' data=atom > | |
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31 term< formatstr=NAME '%' data=any > | |
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32 term< formatstr=any '%' data=any > |
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33 ''' |
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34 |
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35 def transform(self, node, results): |
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36 if self.filename in blacklist: |
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37 return |
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38 elif self.filename == 'mercurial/util.py': |
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39 touch_import('.', 'py3kcompat', node=node) |
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40 |
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41 formatstr = results['formatstr'].clone() |
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42 data = results['data'].clone() |
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43 formatstr.prefix = '' # remove spaces from start |
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44 |
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45 if isnumberremainder(formatstr, data): |
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46 return |
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47 |
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48 # We have two possibilities: |
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49 # 1- An identifier or name is passed, it is going to be a leaf, thus, we |
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50 # just need to copy its value as an argument to the formatter; |
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51 # 2- A tuple is explicitly passed. In this case, we're gonna explode it |
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52 # to pass to the formatter |
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53 # TODO: Check for normal strings. They don't need to be translated |
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54 |
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55 if is_tuple(data): |
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56 args = [formatstr, Comma().clone()] + \ |
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57 [c.clone() for c in data.children[:]] |
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58 else: |
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59 args = [formatstr, Comma().clone(), data] |
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60 |
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61 call = Call(Name('bytesformatter', prefix = ' '), args) |
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62 return call |
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63 |