contrib/casesmash.py

revert: group related data in tuple in the dispatch table

The dispatch table used to be:

- action if in target manifest
- action if not in target manifest
- make backup if in target manifest
- make backup if not in target manifest

We turn this into two (action, make backup) tuples.

This helps both readability of the dispatch table and handling of each case.

This also prepares a refactoring where the different actions we performs, whether
"file is in target manifest" or not, are determined before reaching this loop.

import os, __builtin__
from mercurial import util

def lowerwrap(scope, funcname):
    f = getattr(scope, funcname)
    def wrap(fname, *args, **kwargs):
        d, base = os.path.split(fname)
        try:
            files = os.listdir(d or '.')
        except OSError:
            files = []
        if base in files:
            return f(fname, *args, **kwargs)
        for fn in files:
            if fn.lower() == base.lower():
                return f(os.path.join(d, fn), *args, **kwargs)
        return f(fname, *args, **kwargs)
    scope.__dict__[funcname] = wrap

def normcase(path):
    return path.lower()

os.path.normcase = normcase

for f in 'file open'.split():
    lowerwrap(__builtin__, f)

for f in "chmod chown open lstat stat remove unlink".split():
    lowerwrap(os, f)

for f in "exists lexists".split():
    lowerwrap(os.path, f)

lowerwrap(util, 'posixfile')