view contrib/casesmash.py @ 16075:d2e8e79a6361

largefiles: reduce redundant splitstandin/standin combination

assumptions:

    - 'lfutil.splitstandin(f)' strips 'f' of '.hglf/', if it can
    - 'lfile(f)' examines 'lfutil.standin(f) in manifest'
    - 'lfutil.standin(f)' adds '.hglf/' to 'f'

and

    - 'f' should start with '.hglf/' there, because it is already
      examined by 'lfutil.isstandin(f)'

then:

    lfile(lfutil.splitstandin(f))
      => lfile(<f without '.hglf/'>)
      => lfutil.standin(<f without '.hglf/'>) in manifest
      => <<f without '.hglf/'> with '.hglf/'> in manifest
      => f in manifest

import sys, 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, inst:
            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')