buckets/apr_buckets_flush.c

   1 /* Licensed to the Apache Software Foundation (ASF) under one or more
   2  * contributor license agreements.  See the NOTICE file distributed with
   3  * this work for additional information regarding copyright ownership.
   4  * The ASF licenses this file to You under the Apache License, Version 2.0
   5  * (the "License"); you may not use this file except in compliance with
   6  * the License.  You may obtain a copy of the License at
   7  *
   8  *     http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 #include "apr_buckets.h"
  18
  19 static apr_status_t flush_bucket_read(apr_bucket *b, const char **str,
  20                                       apr_size_t *len, apr_read_type_e block)
  21 {
  22     *str = NULL;
  23     *len = 0;
  24     return APR_SUCCESS;
  25 }
  26
  27 APU_DECLARE(apr_bucket *) apr_bucket_flush_make(apr_bucket *b)
  28 {
  29     b->length      = 0;
  30     b->start       = 0;
  31     b->data        = NULL;
  32     b->type        = &apr_bucket_type_flush;
  33
  34     return b;
  35 }
  36
  37 APU_DECLARE(apr_bucket *) apr_bucket_flush_create(apr_bucket_alloc_t *list)
  38 {
  39     apr_bucket *b = apr_bucket_alloc(sizeof(*b), list);
  40
  41     APR_BUCKET_INIT(b);
  42     b->free = apr_bucket_free;
  43     b->list = list;
  44     return apr_bucket_flush_make(b);
  45 }
  46
  47 APU_DECLARE_DATA const apr_bucket_type_t apr_bucket_type_flush = {
  48     "FLUSH", 5, APR_BUCKET_METADATA,
  49     apr_bucket_destroy_noop,
  50     flush_bucket_read,
  51     apr_bucket_setaside_noop,
  52     apr_bucket_split_notimpl,
  53     apr_bucket_simple_copy
  54 };