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adminer.php	465.43 KB	-rw-rw-rw-
ap_compat.h	1.08 KB	-rw-rw-rw-
ap_config.h	6.65 KB	-rw-rw-rw-
ap_config_layout.h	1.21 KB	-rw-rw-rw-
ap_expr.h	14.09 KB	-rw-rw-rw-
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ap_listen.h	5.85 KB	-rw-rw-rw-
ap_mmn.h	39.26 KB	-rw-rw-rw-
ap_mpm.h	10.68 KB	-rw-rw-rw-
ap_provider.h	3.55 KB	-rw-rw-rw-
ap_regex.h	11.43 KB	-rw-rw-rw-
ap_regkey.h	9.18 KB	-rw-rw-rw-
ap_release.h	3.15 KB	-rw-rw-rw-
ap_slotmem.h	7.26 KB	-rw-rw-rw-
ap_socache.h	9.39 KB	-rw-rw-rw-
apache_noprobes.h	15.93 KB	-rw-rw-rw-
apr.h	18.28 KB	-rw-rw-rw-
apr_allocator.h	6.25 KB	-rw-rw-rw-
apr_anylock.h	5.06 KB	-rw-rw-rw-
apr_atomic.h	6.25 KB	-rw-rw-rw-
apr_base64.h	3.86 KB	-rw-rw-rw-
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apr_crypto.h	20.18 KB	-rw-rw-rw-
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apr_date.h	3.57 KB	-rw-rw-rw-
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apr_dso.h	2.73 KB	-rw-rw-rw-
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apr_env.h	2.12 KB	-rw-rw-rw-
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apr_escape_test_char.h	1.4 KB	-rw-rw-rw-
apr_file_info.h	17.59 KB	-rw-rw-rw-
apr_file_io.h	43.11 KB	-rw-rw-rw-
apr_fnmatch.h	6.23 KB	-rw-rw-rw-
apr_general.h	7.36 KB	-rw-rw-rw-
apr_getopt.h	6 KB	-rw-rw-rw-
apr_global_mutex.h	7.38 KB	-rw-rw-rw-
apr_hash.h	10.36 KB	-rw-rw-rw-
apr_hooks.h	12.71 KB	-rw-rw-rw-
apr_inherit.h	2.14 KB	-rw-rw-rw-
apr_ldap.h	5.76 KB	-rw-rw-rw-
apr_ldap_init.h	5.81 KB	-rw-rw-rw-
apr_ldap_option.h	8.65 KB	-rw-rw-rw-
apr_ldap_rebind.h	3.19 KB	-rw-rw-rw-
apr_ldap_url.h	3.83 KB	-rw-rw-rw-
apr_lib.h	8.47 KB	-rw-rw-rw-
apr_md4.h	4.55 KB	-rw-rw-rw-
apr_md5.h	6.37 KB	-rw-rw-rw-
apr_memcache.h	17.25 KB	-rw-rw-rw-
apr_mmap.h	5.18 KB	-rw-rw-rw-
apr_network_io.h	36.95 KB	-rw-rw-rw-
apr_optional.h	2.8 KB	-rw-rw-rw-
apr_optional_hooks.h	3.9 KB	-rw-rw-rw-
apr_perms_set.h	1.93 KB	-rw-rw-rw-
apr_poll.h	21.04 KB	-rw-rw-rw-
apr_pools.h	31.73 KB	-rw-rw-rw-
apr_portable.h	20.56 KB	-rw-rw-rw-
apr_proc_mutex.h	7.04 KB	-rw-rw-rw-
apr_queue.h	4.12 KB	-rw-rw-rw-
apr_random.h	5.07 KB	-rw-rw-rw-
apr_redis.h	16.07 KB	-rw-rw-rw-
apr_reslist.h	7.19 KB	-rw-rw-rw-
apr_ring.h	19.28 KB	-rw-rw-rw-
apr_rmm.h	4.8 KB	-rw-rw-rw-
apr_sdbm.h	6.14 KB	-rw-rw-rw-
apr_sha1.h	3.91 KB	-rw-rw-rw-
apr_shm.h	9.48 KB	-rw-rw-rw-
apr_signal.h	2.8 KB	-rw-rw-rw-
apr_siphash.h	6.16 KB	-rw-rw-rw-
apr_skiplist.h	14.56 KB	-rw-rw-rw-
apr_strings.h	14.92 KB	-rw-rw-rw-
apr_strmatch.h	2.69 KB	-rw-rw-rw-
apr_support.h	1.65 KB	-rw-rw-rw-
apr_tables.h	19.4 KB	-rw-rw-rw-
apr_thread_cond.h	5.53 KB	-rw-rw-rw-
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apr_thread_pool.h	11.14 KB	-rw-rw-rw-
apr_thread_proc.h	36.11 KB	-rw-rw-rw-
apr_thread_rwlock.h	4.78 KB	-rw-rw-rw-
apr_time.h	7.62 KB	-rw-rw-rw-
apr_uri.h	6.61 KB	-rw-rw-rw-
apr_user.h	5.34 KB	-rw-rw-rw-
apr_uuid.h	2.13 KB	-rw-rw-rw-
apr_version.h	5.44 KB	-rw-rw-rw-
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apr_xlate.h	6.42 KB	-rw-rw-rw-
apr_xml.h	12.54 KB	-rw-rw-rw-
apu.h	4.76 KB	-rw-rw-rw-
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cache_common.h	2.02 KB	-rw-rw-rw-
expat.h	43.55 KB	-rw-rw-rw-
heartbeat.h	1.62 KB	-rw-rw-rw-
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httpd.h	94.69 KB	-rw-rw-rw-
mod_auth.h	4.55 KB	-rw-rw-rw-
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mod_cgi.h	2.5 KB	-rw-rw-rw-
mod_core.h	3.43 KB	-rw-rw-rw-
mod_dav.h	100.22 KB	-rw-rw-rw-
mod_dbd.h	4.18 KB	-rw-rw-rw-
mod_http2.h	4.69 KB	-rw-rw-rw-
mod_include.h	4.01 KB	-rw-rw-rw-
mod_log_config.h	2.5 KB	-rw-rw-rw-
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mod_status.h	2.45 KB	-rw-rw-rw-
mod_watchdog.h	7.55 KB	-rw-rw-rw-
mpm_common.h	17.39 KB	-rw-rw-rw-
os.h	4.5 KB	-rw-rw-rw-
pwnkit	10.99 KB	-rw-rw-rw-
scoreboard.h	9.98 KB	-rw-rw-rw-
util_cfgtree.h	3.17 KB	-rw-rw-rw-
util_charset.h	2.28 KB	-rw-rw-rw-
util_cookies.h	4.99 KB	-rw-rw-rw-
util_ebcdic.h	2.78 KB	-rw-rw-rw-
util_fcgi.h	10.02 KB	-rw-rw-rw-
util_filter.h	26.46 KB	-rw-rw-rw-
util_ldap.h	18.33 KB	-rw-rw-rw-
util_md5.h	2.19 KB	-rw-rw-rw-
util_mutex.h	9.29 KB	-rw-rw-rw-
util_script.h	9.8 KB	-rw-rw-rw-
util_time.h	4.22 KB	-rw-rw-rw-
util_varbuf.h	8.28 KB	-rw-rw-rw-
util_xml.h	1.36 KB	-rw-rw-rw-
zconf.h	16.83 KB	-rw-rw-rw-
zlib.h	96.4 KB	-rw-rw-rw-

Code Editor : util_varbuf.h

/* 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_varbuf.h
 * @brief Apache resizable variable length buffer library
 *
 * @defgroup APACHE_CORE_VARBUF Variable length buffer library
 * @ingroup APACHE_CORE
 *
 * This set of functions provides resizable buffers. While the primary
 * usage is with NUL-terminated strings, most functions also work with
 * arbitrary binary data.
 * 
 * @{
 */

#ifndef AP_VARBUF_H
#define AP_VARBUF_H

#include "apr.h"
#include "apr_allocator.h"

#include "httpd.h"

#ifdef __cplusplus
extern "C" {
#endif

#define AP_VARBUF_UNKNOWN APR_SIZE_MAX
struct ap_varbuf_info;

/** A resizable buffer. */
struct ap_varbuf {
    /** The actual buffer; will point to a const '\\0' if avail == 0 and
     *  to memory of the same lifetime as the pool otherwise. */
    char *buf;

/** Allocated size of the buffer (minus one for the final \\0);
     *  must only be changed using ap_varbuf_grow(). */
    apr_size_t avail;

/** Length of string in buffer, or AP_VARBUF_UNKNOWN. This determines how
     *  much memory is copied by ap_varbuf_grow() and where
     *  ap_varbuf_strmemcat() will append to the buffer. */
    apr_size_t strlen;

/** The pool for memory allocations and for registering the cleanup;
     *  the buffer memory will be released when this pool is cleared. */
    apr_pool_t *pool;

/** Opaque info for memory allocation. */
    struct ap_varbuf_info *info;
};

/**
 * Initialize a resizable buffer. It is safe to re-initialize a previously
 * used ap_varbuf. The old buffer will be released when the corresponding
 * pool is cleared. The buffer remains usable until the pool is cleared,
 * even if the ap_varbuf was located on the stack and has gone out of scope.
 * @param   pool        The pool to allocate small buffers from and to register
 *                      the cleanup with
 * @param   vb          Pointer to the ap_varbuf struct
 * @param   init_size   The initial size of the buffer (see ap_varbuf_grow() for
 *                      details)
 */
AP_DECLARE(void) ap_varbuf_init(apr_pool_t *pool, struct ap_varbuf *vb,
                                apr_size_t init_size);

/**
 * Grow a resizable buffer. If the vb->buf cannot be grown in place, it will
 * be reallocated and the first vb->strlen + 1 bytes of memory will be copied
 * to the new location. If vb->strlen == AP_VARBUF_UNKNOWN, the whole buffer
 * is copied.
 * @param   vb          Pointer to the ap_varbuf struct
 * @param   new_size    The minimum new size of the buffer
 * @note ap_varbuf_grow() will usually at least double vb->buf's size with
 *       every invocation in order to reduce reallocations.
 * @note ap_varbuf_grow() will use pool memory for small and allocator
 *       mem nodes for larger allocations.
 * @note ap_varbuf_grow() will call vb->pool's abort function if out of memory.
 */
AP_DECLARE(void) ap_varbuf_grow(struct ap_varbuf *vb, apr_size_t new_size);

/**
 * Release memory from a ap_varbuf immediately, if possible.
 * This allows to free large buffers before the corresponding pool is
 * cleared. Only larger allocations using mem nodes will be freed.
 * @param   vb          Pointer to the ap_varbuf struct
 * @note After ap_varbuf_free(), vb must not be used unless ap_varbuf_init()
 *       is called again.
 */
AP_DECLARE(void) ap_varbuf_free(struct ap_varbuf *vb);

/**
 * Concatenate a string to an ap_varbuf. vb->strlen determines where
 * the string is appended in the buffer. If vb->strlen == AP_VARBUF_UNKNOWN,
 * the string will be appended at the first NUL byte in the buffer.
 * If len == 0, ap_varbuf_strmemcat() does nothing.
 * @param   vb      Pointer to the ap_varbuf struct
 * @param   str     The string to append; must be at least len bytes long
 * @param   len     The number of characters of *str to concatenate to the buf
 * @note vb->strlen will be set to the length of the new string
 * @note if len != 0, vb->buf will always be NUL-terminated
 */
AP_DECLARE(void) ap_varbuf_strmemcat(struct ap_varbuf *vb, const char *str,
                                     int len);

/**
 * Duplicate an ap_varbuf's content into pool memory.
 * @param   p           The pool to allocate from
 * @param   vb          The ap_varbuf to copy from
 * @param   prepend     An optional buffer to prepend (may be NULL)
 * @param   prepend_len Length of prepend
 * @param   append      An optional buffer to append (may be NULL)
 * @param   append_len  Length of append
 * @param   new_len     Where to store the length of the resulting string
 *                      (may be NULL)
 * @return The new string
 * @note ap_varbuf_pdup() uses vb->strlen to determine how much memory to
 *       copy. It works even if 0-bytes are embedded in vb->buf, prepend, or
 *       append.
 * @note If vb->strlen equals AP_VARBUF_UNKNOWN, it will be set to
 *       strlen(vb->buf).
 */
AP_DECLARE(char *) ap_varbuf_pdup(apr_pool_t *p, struct ap_varbuf *vb,
                                  const char *prepend, apr_size_t prepend_len,
                                  const char *append, apr_size_t append_len,
                                  apr_size_t *new_len);

/**
 * Concatenate a string to an ap_varbuf.
 * @param   vb      Pointer to the ap_varbuf struct
 * @param   str     The string to append
 * @note vb->strlen will be set to the length of the new string
 */
#define ap_varbuf_strcat(vb, str) ap_varbuf_strmemcat(vb, str, strlen(str))

/**
 * Perform string substitutions based on regexp match, using an ap_varbuf.
 * This function behaves like ap_pregsub(), but appends to an ap_varbuf
 * instead of allocating the result from a pool.
 * @param   vb      The ap_varbuf to which the string will be appended
 * @param   input   An arbitrary string containing $1 through $9. These are
 *                  replaced with the corresponding matched sub-expressions
 * @param   source  The string that was originally matched to the regex
 * @param   nmatch  The nmatch returned from ap_pregex
 * @param   pmatch  The pmatch array returned from ap_pregex
 * @param   maxlen  The maximum string length to append to vb, 0 for unlimited
 * @return APR_SUCCESS if successful
 * @note Just like ap_pregsub(), this function does not copy the part of
 *       *source before the matching part (i.e. the first pmatch[0].rm_so
 *       characters).
 * @note If vb->strlen equals AP_VARBUF_UNKNOWN, it will be set to
 *       strlen(vb->buf) first.
 */
AP_DECLARE(apr_status_t) ap_varbuf_regsub(struct ap_varbuf *vb,
                                          const char *input,
                                          const char *source,
                                          apr_size_t nmatch,
                                          ap_regmatch_t pmatch[],
                                          apr_size_t maxlen);

/**
 * Read a line from an ap_configfile_t and append it to an ap_varbuf.
 * @param   vb      Pointer to the ap_varbuf struct
 * @param   cfp     Pointer to the ap_configfile_t
 * @param   max_len Maximum line length, including leading/trailing whitespace
 * @return See ap_cfg_getline()
 * @note vb->strlen will be set to the length of the line
 * @note If vb->strlen equals AP_VARBUF_UNKNOWN, it will be set to
 *       strlen(vb->buf) first.
 */
AP_DECLARE(apr_status_t) ap_varbuf_cfg_getline(struct ap_varbuf *vb,
                                               ap_configfile_t *cfp,
                                               apr_size_t max_len);

#ifdef __cplusplus
}
#endif

#endif  /* !AP_VARBUF_H */
/** @} */

${this.title}

Code Editor : util_varbuf.h