apr_buckets.h

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/* Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
#ifndef APR_BUCKETS_H
#define APR_BUCKETS_H

#if defined(APR_BUCKET_DEBUG) && !defined(APR_RING_DEBUG)
#define APR_RING_DEBUG
#endif

#include "apu.h"
#include "apr_network_io.h"
#include "apr_file_io.h"
#include "apr_general.h"
#include "apr_mmap.h"
#include "apr_errno.h"
#include "apr_ring.h"
#include "apr.h"
#if APR_HAVE_SYS_UIO_H
#include <sys/uio.h>    /* for struct iovec */
#endif
#if APR_HAVE_STDARG_H
#include <stdarg.h>
#endif

#ifdef __cplusplus
extern "C" {
#endif

#define APR_BUCKET_BUFF_SIZE 8000

typedef enum {
    APR_BLOCK_READ,   
    APR_NONBLOCK_READ 
} apr_read_type_e;

/*
 * Forward declaration of the main types.
 */

typedef struct apr_bucket_brigade apr_bucket_brigade;
typedef struct apr_bucket apr_bucket;
typedef struct apr_bucket_alloc_t apr_bucket_alloc_t;

typedef struct apr_bucket_type_t apr_bucket_type_t;

struct apr_bucket_type_t {
    const char *name;
    int num_func;
    enum {
        APR_BUCKET_DATA = 0,
        APR_BUCKET_METADATA = 1
    } is_metadata;
    void (*destroy)(void *data);

    apr_status_t (*read)(apr_bucket *b, const char **str, apr_size_t *len, 
                         apr_read_type_e block);
    
    apr_status_t (*setaside)(apr_bucket *e, apr_pool_t *pool);

    apr_status_t (*split)(apr_bucket *e, apr_size_t point);

    apr_status_t (*copy)(apr_bucket *e, apr_bucket **c);

};

struct apr_bucket {
    APR_RING_ENTRY(apr_bucket) link;
    const apr_bucket_type_t *type;
    apr_size_t length;
    apr_off_t start;


};

struct apr_bucket {
    APR_RING_ENTRY(apr_bucket) link;
    const apr_bucket_type_t *type;
    apr_size_t length;
    apr_off_t start;


};

struct apr_bucket {
    APR_RING_ENTRY(apr_bucket) link;
    const apr_bucket_type_t *type;
    apr_size_t length;
    apr_off_t start;


};

struct apr_bucket {
    APR_RING_ENTRY(apr_bucket) link;
    const apr_bucket_type_t *type;
    apr_size_t length;
    apr_off_t start;


};

struct apr_bucket {
    APR_RING_ENTRY(apr_bucket) link;
    const apr_bucket_type_t *type;
    apr_size_t length;
    apr_off_t start;


};

struct apr_bucket {
    APR_RING_ENTRY(apr_bucket) link;
    const apr_bucket_type_t *type;
    apr_size_t length;
    apr_off_t start;


};

struct apr_bucket {
    APR_RING_ENTRY(apr_bucket) link;
    const apr_bucket_type_t *type;
    apr_size_t length;
    apr_off_t start;


};

struct apr_bucket {
    APR_RING_ENTRY(apr_bucket) link;
    const apr_bucket_type_t *type;
    apr_size_t length;
    apr_off_t start;


};

struct apr_bucket {
    APR_RING_ENTRY(apr_bucket) link;
    const apr_bucket_type_t *type;
    apr_size_t length;
    apr_off_t start;


};

struct apr_bucket {
    APR_RING_ENTRY(apr_bucket) link;
    const apr_bucket_type_t *type;
    apr_size_t length;
    apr_off_t start;


};

struct apr_bucket {
    APR_RING_ENTRY(apr_bucket) link;
    const apr_bucket_type_t *type;
    apr_size_t length;
    apr_off_t start;


};

struct apr_bucket {
    APR_RING_ENTRY(apr_bucket) link;
    const apr_bucket_type_t *type;
    apr_size_t length;
    apr_off_t start;


};

struct apr_bucket {
    APR_RING_ENTRY(apr_bucket) link;
    const apr_bucket_type_t *type;
    apr_size_t length;
    apr_off_t start;


};

struct apr_bucket {
    APR_RING_ENTRY(apr_bucket) link;
    const apr_bucket_type_t *type;
    apr_size_t length;
    apr_off_t start;


};

struct apr_bucket {
    APR_RING_ENTRY(apr_bucket) link;
    const apr_bucket_type_t *type;
    apr_size_t length;
    apr_off_t start;


};

struct apr_bucket {
    APR_RING_ENTRY(apr_bucket) link;
    const apr_bucket_type_t *type;
    apr_size_t length;
    apr_off_t start;


};

struct apr_bucket {
    APR_RING_ENTRY(apr_bucket) link;
    const apr_bucket_type_t *type;
    apr_size_t length;
    apr_off_t start;


};

struct apr_bucket {
    APR_RING_ENTRY(apr_bucket) link;
    const apr_bucket_type_t *type;
    apr_size_t length;
    apr_off_t start;


};

struct apr_bucket {
    APR_RING_ENTRY(apr_bucket) link;
    const apr_bucket_type_t *type;
    apr_size_t length;
    apr_off_t start;


};

struct apr_bucket {
    APR_RING_ENTRY(apr_bucket) link;
    const apr_bucket_type_t *type;
    apr_size_t length;
    apr_off_t start;


};

struct apr_bucket {
    APR_RING_ENTRY(apr_bucket) link;
    const apr_bucket_type_t *type;
    apr_size_t length;
    apr_off_t start;


};

struct apr_bucket {
    APR_RING_ENTRY(apr_bucket) link;
    const apr_bucket_type_t *type;
    apr_size_t length;
    apr_off_t start;


};

struct apr_bucket {
    APR_RING_ENTRY(apr_bucket) link;
    const apr_bucket_type_t *type;
    apr_size_t length;
    apr_off_t start;


};

struct apr_bucket {
    APR_RING_ENTRY(apr_bucket) link;
    const apr_bucket_type_t *type;
    apr_size_t length;
    apr_off_t start;


};

struct apr_bucket {
    APR_RING_ENTRY(apr_bucket) link;
    const apr_bucket_type_t *type;
    apr_size_t length;
    apr_off_t start;


};

struct apr_bucket {
    APR_RING_ENTRY(apr_bucket) link;
    const apr_bucket_type_t *type;
    apr_size_t length;
    apr_off_t start;


};

struct apr_bucket {
    APR_RING_ENTRY(apr_bucket) link;
    const apr_bucket_type_t *type;
    apr_size_t length;
    apr_off_t start;


};

struct apr_bucket {
    APR_RING_ENTRY(apr_bucket) link;
    const apr_bucket_type_t *type;
    apr_size_t length;
    apr_off_t start;


};

struct apr_bucket {
    APR_RING_ENTRY(apr_bucket) link;
    const apr_bucket_type_t *type;
    apr_size_t length;
    apr_off_t start;


};

struct apr_bucket {
    APR_RING_ENTRY(apr_bucket) link;
    const apr_bucket_type_t *type;
    apr_size_t length;
    apr_off_t start;


};

struct apr_bucket {
    APR_RING_ENTRY(apr_bucket) link;
    const apr_bucket_type_t *type;
    apr_size_t length;
    apr_off_t start;


};

struct apr_bucket {
    APR_RING_ENTRY(apr_bucket) link;
    const apr_bucket_type_t *type;
    apr_size_t length;
    apr_off_t start;


};

struct apr_bucket {
    APR_RING_ENTRY(apr_bucket) link;
    const apr_bucket_type_t *type;
    apr_size_t length;
    apr_off_t start;


};

struct apr_bucket {
    APR_RING_ENTRY(apr_bucket) link;
    const apr_bucket_type_t *type;
    apr_size_t length;
    apr_off_t start;


};

struct apr_bucket {
    APR_RING_ENTRY(apr_bucket) link;
    const apr_bucket_type_t *type;
    apr_size_t length;
    apr_off_t start;


};

struct apr_bucket {
    APR_RING_ENTRY(apr_bucket) link;
    const apr_bucket_type_t *type;
    apr_size_t length;
    apr_off_t start;


};

struct apr_bucket {
    APR_RING_ENTRY(apr_bucket) link;
    const apr_bucket_type_t *type;
    apr_size_t length;
    apr_off_t start;


};

struct apr_bucket {
    APR_RING_ENTRY(apr_bucket) link;
    const apr_bucket_type_t *type;
    apr_size_t length;
    apr_off_t start;


};

struct apr_bucket {
    APR_RING_ENTRY(apr_bucket) link;
    const apr_bucket_type_t *type;
    apr_size_t length;
    apr_off_t start;


};

struct apr_bucket {
    APR_RING_ENTRY(apr_bucket) link;
    const apr_bucket_type_t *type;
    apr_size_t length;
    apr_off_t start;


};

struct apr_bucket {
    APR_RING_ENTRY(apr_bucket) link;
    const apr_bucket_type_t *type;
    apr_size_t length;
    apr_off_t start;


};

struct apr_bucket {
    APR_RING_ENTRY(apr_bucket) link;
    const apr_bucket_type_t *type;
    apr_size_t length;
    apr_off_t start;


};

struct apr_bucket {
    APR_RING_ENTRY(apr_bucket) link;
    const apr_bucket_type_t *type;
    apr_size_t length;
    apr_off_t start;


};

struct apr_bucket {
    APR_RING_ENTRY(apr_bucket) link;
    const apr_bucket_type_t *type;
    apr_size_t length;
    apr_off_t start;


};

struct apr_bucket {
    APR_RING_ENTRY(apr_bucket) link;
    const apr_bucket_type_t *type;
    apr_size_t length;
    apr_off_t start;


};

struct apr_bucket {
    APR_RING_ENTRY(apr_bucket) link;
    const apr_bucket_type_t *type;