Quelle util_cfgtree.h Sprache: C

/* 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.
*/

/**
* @file  util_cfgtree.h
* @brief Config Tree Package
*
* @defgroup APACHE_CORE_CONFIG_TREE Config Tree Package
* @ingroup  APACHE_CORE_CONFIG
* @{
*/

#ifndef AP_CONFTREE_H
#define AP_CONFTREE_H

#include "ap_config.h"

#ifdef __cplusplus
extern "C" {
#endif

typedef struct ap_directive_t ap_directive_t;

/**
* @brief Structure used to build the config tree.
*
* The config tree only stores
* the directives that will be active in the running server.  Directives
* that contain other directions, such as <Directory ...> cause a sub-level
* to be created, where the included directives are stored.  The closing
* directive (</Directory>) is not stored in the tree.
*/
struct ap_directive_t {
    /** The current directive */
    const char *directive;
    /** The arguments for the current directive, stored as a space
     *  separated list */
    const char *args;
    /** The next directive node in the tree */
    struct ap_directive_t *next;
    /** The first child node of this directive */
    struct ap_directive_t *first_child;
    /** The parent node of this directive */
    struct ap_directive_t *parent;

    /** directive's module can store add'l data here */
    void *data;

    /* ### these may go away in the future, but are needed for now */
    /** The name of the file this directive was found in */
    const char *filename;
    /** The line number the directive was on */
    int line_num;

    /** A short-cut towards the last directive node in the tree.
     *  The value may not always be up-to-date but it always points to
     *  somewhere in the tree, nearer to the tail.
     *  This value is only set in the first node
     */
    struct ap_directive_t *last;
};

/**
* The root of the configuration tree
*/
AP_DECLARE_DATA extern ap_directive_t *ap_conftree;

/**
* Add a node to the configuration tree.
* @param parent The current parent node.  If the added node is a first_child,
                 then this is changed to the current node
* @param current The current node
* @param toadd The node to add to the tree
* @param child Is the node to add a child node
* @return the added node
*/
ap_directive_t *ap_add_node(ap_directive_t **parent, ap_directive_t *current,
                            ap_directive_t *toadd, int child);

#ifdef __cplusplus
}
#endif

#endif
/** @} */

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