Mercurial > hg
view contrib/hgfixes/fix_bytes.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 | 37a70a784397 |
children | e51d4aedace9 |
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"""Fixer that changes plain strings to bytes strings.""" import re from lib2to3 import fixer_base from lib2to3.pgen2 import token from lib2to3.fixer_util import Name from lib2to3.pygram import python_symbols as syms _re = re.compile(r'[rR]?[\'\"]') # XXX: Implementing a blacklist in 2to3 turned out to be more troublesome than # blacklisting some modules inside the fixers. So, this is what I came with. blacklist = ['mercurial/demandimport.py', 'mercurial/py3kcompat.py', # valid python 3 already 'mercurial/i18n.py', ] def isdocstring(node): def isclassorfunction(ancestor): symbols = (syms.funcdef, syms.classdef) # if the current node is a child of a function definition, a class # definition or a file, then it is a docstring if ancestor.type == syms.simple_stmt: try: while True: if ancestor.type in symbols: return True ancestor = ancestor.parent except AttributeError: return False return False def ismodule(ancestor): # Our child is a docstring if we are a simple statement, and our # ancestor is file_input. In other words, our child is a lone string in # the source file. try: if (ancestor.type == syms.simple_stmt and ancestor.parent.type == syms.file_input): return True except AttributeError: return False def isdocassignment(ancestor): # Assigning to __doc__, definitely a string try: while True: if (ancestor.type == syms.expr_stmt and Name('__doc__') in ancestor.children): return True ancestor = ancestor.parent except AttributeError: return False if ismodule(node.parent) or \ isdocassignment(node.parent) or \ isclassorfunction(node.parent): return True return False def shouldtransform(node): specialnames = ['__main__'] if node.value in specialnames: return False ggparent = node.parent.parent.parent sggparent = str(ggparent) if 'getattr' in sggparent or \ 'hasattr' in sggparent or \ 'setattr' in sggparent or \ 'encode' in sggparent or \ 'decode' in sggparent: return False return True class FixBytes(fixer_base.BaseFix): PATTERN = 'STRING' def transform(self, node, results): if self.filename in blacklist: return if node.type == token.STRING: if _re.match(node.value): if isdocstring(node): return if not shouldtransform(node): return new = node.clone() new.value = 'b' + new.value return new