annotate contrib/casesmash.py @ 31679:0f8ba0bc1154

rcutil: move scmutil.*rcpath to rcutil (API)

As discussed at [1], the logic around "actual config"s seem to be
non-trivial enough that it's worth a new module.

This patch creates the module and move "scmutil.*rcpath" functions there as
the first step. More methods will be moved to the module in the future.

The module is different from config.py because the latter only cares about
data structure and parsing, and does not care about special case, or system
config paths, or environment variables.

[1]: https://www.mercurial-scm.org/pipermail/mercurial-devel/2017-March/095503.html

from __future__ import absolute_import
import __builtin__
import os
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')