comparison mercurial/posix.py @ 15711:c51c9dc13a58

cygwin: add cygwin specific normcase logic

in cygwin environment, mount point part of path is treated as case
sensitive, even though underlying NTFS is case insensitive.

this patch preserves mount point part of specified path, only if it is
absolute one.

there is no easy way to get list of current mount points from python
program, other than to execute "mount" external command, because
cygwin does not store current mount points into Unix/Linux like
/etc/XXXtab file.

so, this patch introduces cygwinmountpoints variable to list mount
points to be preserved case.

this allows some other extensions to customize mount point
configuration.

15710:f63e40047372

            return os.path.realpath('./' + path)
else:
    # Fallback to the likely inadequate Python builtin function.
    realpath = os.path.realpath

def shellquote(s):
    if os.sys.platform == 'OpenVMS':
        return '"%s"' % s
    else:
        return "'%s'" % s.replace("'", "'\\''")

15711:c51c9dc13a58

            return os.path.realpath('./' + path)
else:
    # Fallback to the likely inadequate Python builtin function.
    realpath = os.path.realpath

if sys.platform == 'cygwin':
    # workaround for cygwin, in which mount point part of path is
    # treated as case sensitive, even though underlying NTFS is case
    # insensitive.

    # default mount points
    cygwinmountpoints = sorted([
            "/usr/bin",
            "/usr/lib",
            "/cygdrive",
            ], reverse=True)

    # use upper-ing as normcase as same as NTFS workaround
    def normcase(path):
        pathlen = len(path)
        if (pathlen == 0) or (path[0] != os.sep):
            # treat as relative
            return encodingupper(path)

        # to preserve case of mountpoint part
        for mp in cygwinmountpoints:
            if not path.startswith(mp):
                continue

            mplen = len(mp)
            if mplen == pathlen: # mount point itself
                return mp
            if path[mplen] == os.sep:
                return mp + encodingupper(path[mplen:])

        return encodingupper(path)

def shellquote(s):
    if os.sys.platform == 'OpenVMS':
        return '"%s"' % s
    else:
        return "'%s'" % s.replace("'", "'\\''")