from storage.basestorage import BaseStorage
from cStringIO import StringIO

_FAKE_STORAGE_MAP = {}

class FakeStorage(BaseStorage):
  def _init_path(self, path=None, create=False):
    return path

  def get_content(self, path):
    if not path in _FAKE_STORAGE_MAP:
      raise IOError('Fake file %s not found' % path)

    return _FAKE_STORAGE_MAP.get(path)

  def put_content(self, path, content):
    _FAKE_STORAGE_MAP[path] = content

  def stream_read(self, path):
    yield _FAKE_STORAGE_MAP[path]

  def stream_read_file(self, path):
    return StringIO(_FAKE_STORAGE_MAP[path])

  def stream_write(self, path, fp, content_type=None, content_encoding=None):
    _FAKE_STORAGE_MAP[path] = fp.read()

  def remove(self, path):
    _FAKE_STORAGE_MAP.pop(path, None)

  def exists(self, path):
    return path in _FAKE_STORAGE_MAP

  def get_checksum(self, path):
    return path