Python Examples of django.core.files.base.File

Source File: backends.py From django-qiniu-storage with MIT License

6 votes

def listdir(self, name):
        name = self._normalize_name(self._clean_name(name))
        if name and not name.endswith('/'):
            name += '/'

        dirlist = bucket_lister(self.bucket_manager, self.bucket_name,
                                prefix=name)
        files = []
        dirs = set()
        base_parts = name.split("/")[:-1]
        for item in dirlist:
            parts = item['key'].split("/")
            parts = parts[len(base_parts):]
            if len(parts) == 1:
                # File
                files.append(parts[0])
            elif len(parts) > 1:
                # Directory
                dirs.add(parts[0])
        return list(dirs), files

Source File: azure_storage.py From django-storages with BSD 3-Clause "New" or "Revised" License

6 votes

def _get_valid_path(s):
    # A blob name:
    #   * must not end with dot or slash
    #   * can contain any character
    #   * must escape URL reserved characters
    #     (not needed here since the azure client will do that)
    s = s.strip('./')
    if len(s) > _AZURE_NAME_MAX_LEN:
        raise ValueError(
            "File name max len is %d" % _AZURE_NAME_MAX_LEN)
    if not len(s):
        raise ValueError(
            "File name must contain one or more "
            "printable characters")
    if s.count('/') > 256:
        raise ValueError(
            "File name must not contain "
            "more than 256 slashes")
    return s


# Max len according to azure's docs

Source File: google_sheets.py From django-collaborative with MIT License

6 votes

def __init__(self, credentials):
        """
        Initialize a Google Private sheets reader service, given a
        service account credentials JSON. The credentials can either
        be a dict, JSON string or file (bytes). This routine will do
        all the proper conversions for internal use.
        """
        # file upload, parsed
        if isinstance(credentials, bytes):
            credentials = json.loads(credentials.decode("utf-8"))
        elif isinstance(credentials, File):
            credentials = json.loads(credentials.read().decode("utf-8"))
        # JSON string, as stored in the DB
        elif isinstance(credentials, str):
            credentials = json.loads(credentials)
        # we need to have a decoded credentials dict by here
        creds = service_account.Credentials.from_service_account_info(
            credentials, scopes=self.SCOPES
        )
        # TODO: catch authentication error, return friendly msg. (we
        #       might we need to do this above as well)
        self.service = discovery.build("sheets", "v4", credentials=creds)

Source File: simple.py From django-sendfile2 with BSD 3-Clause "New" or "Revised" License

6 votes

def sendfile(request, filepath, **kwargs):
    '''Use the SENDFILE_ROOT value composed with the path arrived as argument
    to build an absolute path with which resolve and return the file contents.

    If the path points to a file out of the root directory (should cover both
    situations with '..' and symlinks) then a 404 is raised.
    '''
    statobj = filepath.stat()

    # Respect the If-Modified-Since header.
    if not was_modified_since(request.META.get('HTTP_IF_MODIFIED_SINCE'),
                              statobj.st_mtime, statobj.st_size):
        return HttpResponseNotModified()

    with File(filepath.open('rb')) as f:
        response = HttpResponse(f.chunks())

    response["Last-Modified"] = http_date(statobj.st_mtime)
    return response

Source File: s3boto3.py From django-storages with BSD 3-Clause "New" or "Revised" License

6 votes

def _create_empty_on_close(self):
        """
        Attempt to create an empty file for this key when this File is closed if no bytes
        have been written and no object already exists on S3 for this key.

        This behavior is meant to mimic the behavior of Django's builtin FileSystemStorage,
        where files are always created after they are opened in write mode:

            f = storage.open("file.txt", mode="w")
            f.close()
        """
        assert "w" in self._mode
        assert self._raw_bytes_written == 0

        try:
            # Check if the object exists on the server; if so, don't do anything
            self.obj.load()
        except ClientError as err:
            if err.response["ResponseMetadata"]["HTTPStatusCode"] == 404:
                self.obj.put(
                    Body=b"", **self._storage._get_write_parameters(self.obj.key)
                )
            else:
                raise

Source File: admin.py From weixin_server with MIT License

6 votes

def add_view(self, request, form_url='', extra_context=None):
        # Prepopulate new configuration entries with the value of the current config, if given:
        if 'source' in request.GET:
            get = request.GET.copy()
            source_id = int(get.pop('source')[0])
            source = get_object_or_404(self.model, pk=source_id)
            source_dict = models.model_to_dict(source)
            for field_name, field_value in source_dict.items():
                # read files into request.FILES, if:
                # * user hasn't ticked the "clear" checkbox
                # * user hasn't uploaded a new file
                if field_value and isinstance(field_value, File):
                    clear_checkbox_name = '{0}-clear'.format(field_name)
                    if request.POST.get(clear_checkbox_name) != 'on':
                        request.FILES.setdefault(field_name, field_value)
                get[field_name] = field_value
            request.GET = get
        # Call our grandparent's add_view, skipping the parent code
        # because the parent code has a different way to prepopulate new configuration entries
        # with the value of the latest config, which doesn't make sense for keyed models.
        # pylint: disable=bad-super-call
        return super(ConfigurationModelAdmin, self).add_view(request, form_url, extra_context)