comparison hgext/largefiles/lfutil.py @ 44379:ca82929e433d

lfutil: provide a hint if the largefiles/lfs cache path cannot be determined

A coworker hit this error using an LFS repo in a stripped down environment, and
didn't know how to resolve it.

The final conditional is a bit fast and loose, but there is currently no 'posix'
test in hghave, and it doesn't seem like it's worth adding for this since I
think Windows is the only non-POSIX platform we run tests on.

Differential Revision: https://phab.mercurial-scm.org/D8145

44376:56f089e40c5a

def _usercachedir(ui, name=longname):
    '''Return the location of the "global" largefiles cache.'''
    path = ui.configpath(name, b'usercache')
    if path:
        return path
    if pycompat.iswindows:
        appdata = encoding.environ.get(
            b'LOCALAPPDATA', encoding.environ.get(b'APPDATA')
        )
        if appdata:
            return os.path.join(appdata, name)
    elif pycompat.isdarwin:
        home = encoding.environ.get(b'HOME')
        if home:
            return os.path.join(home, b'Library', b'Caches', name)
    elif pycompat.isposix:
        path = encoding.environ.get(b'XDG_CACHE_HOME')
        if path:
            return os.path.join(path, name)
        home = encoding.environ.get(b'HOME')
        if home:
            return os.path.join(home, b'.cache', name)
    else:
        raise error.Abort(
            _(b'unknown operating system: %s\n') % pycompat.osname
        )
    raise error.Abort(_(b'unknown %s usercache location') % name)


def inusercache(ui, hash):
    path = usercachepath(ui, hash)
    return os.path.exists(path)

44379:ca82929e433d

def _usercachedir(ui, name=longname):
    '''Return the location of the "global" largefiles cache.'''
    path = ui.configpath(name, b'usercache')
    if path:
        return path

    hint = None

    if pycompat.iswindows:
        appdata = encoding.environ.get(
            b'LOCALAPPDATA', encoding.environ.get(b'APPDATA')
        )
        if appdata:
            return os.path.join(appdata, name)

        hint = _(b"define %s or %s in the environment, or set %s.usercache") % (
            b"LOCALAPPDATA",
            b"APPDATA",
            name,
        )
    elif pycompat.isdarwin:
        home = encoding.environ.get(b'HOME')
        if home:
            return os.path.join(home, b'Library', b'Caches', name)

        hint = _(b"define %s in the environment, or set %s.usercache") % (
            b"HOME",
            name,
        )
    elif pycompat.isposix:
        path = encoding.environ.get(b'XDG_CACHE_HOME')
        if path:
            return os.path.join(path, name)
        home = encoding.environ.get(b'HOME')
        if home:
            return os.path.join(home, b'.cache', name)

        hint = _(b"define %s or %s in the environment, or set %s.usercache") % (
            b"XDG_CACHE_HOME",
            b"HOME",
            name,
        )
    else:
        raise error.Abort(
            _(b'unknown operating system: %s\n') % pycompat.osname
        )

    raise error.Abort(_(b'unknown %s usercache location') % name, hint=hint)


def inusercache(ui, hash):
    path = usercachepath(ui, hash)
    return os.path.exists(path)