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Edit File : apr_general.h \| Size : 7.34 KB
/* 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_GENERAL_H #define APR_GENERAL_H /* * @file apr_general.h * This is collection of oddballs that didn't fit anywhere else, * and might move to more appropriate headers with the release * of APR 1.0. * @brief APR Miscellaneous library routines / #include "apr.h" #include "apr_pools.h" #include "apr_errno.h" #if APR_HAVE_SIGNAL_H #include <signal.h> #endif #ifdef __cplusplus extern "C" { #endif / __cplusplus / /* * @defgroup apr_general Miscellaneous library routines * @ingroup APR * This is collection of oddballs that didn't fit anywhere else, * and might move to more appropriate headers with the release * of APR 1.0. * @{ / /* FALSE / #ifndef FALSE #define FALSE 0 #endif /* TRUE / #ifndef TRUE #define TRUE (!FALSE) #endif /* a space / #define APR_ASCII_BLANK '\040' /* a carrige return / #define APR_ASCII_CR '\015' /* a line feed / #define APR_ASCII_LF '\012' /* a tab / #define APR_ASCII_TAB '\011' /* signal numbers typedef / typedef int apr_signum_t; /* * Finding offsets of elements within structures. * Taken from the X code... they've sweated portability of this stuff * so we don't have to. Sigh... * @param p_type pointer type name * @param field data field within the structure pointed to * @return offset / #if defined(CRAY) \|\| (defined(__arm) && !(defined(LINUX) \|\| defined(__FreeBSD__))) #ifdef __STDC__ #define APR_OFFSET(p_type,field) _Offsetof(p_type,field) #else #ifdef CRAY2 #define APR_OFFSET(p_type,field) \ (sizeof(int)((unsigned int)&(((p_type)NULL)->field))) #else /* !CRAY2 / #define APR_OFFSET(p_type,field) ((unsigned int)&(((p_type)NULL)->field)) #endif / !CRAY2 / #endif / __STDC__ / #else / ! (CRAY \|\| __arm) / #define APR_OFFSET(p_type,field) \ ((long) (((char ) (&(((p_type)NULL)->field))) - ((char ) NULL))) #endif / !CRAY / /* * Finding offsets of elements within structures. * @param s_type structure type name * @param field data field within the structure * @return offset / #if defined(__has_builtin) #if __has_builtin(__builtin_offsetof) #define APR_OFFSETOF(s_type,field) __builtin_offsetof(s_type,field) #endif #endif / __has_builtin / #ifndef APR_OFFSETOF #if defined(offsetof) && !defined(__cplusplus) #define APR_OFFSETOF(s_type,field) offsetof(s_type,field) #else #define APR_OFFSETOF(s_type,field) APR_OFFSET(s_type,field) #endif #endif /* ndef APR_OFFSETOF / #ifndef DOXYGEN / A couple of prototypes for functions in case some platform doesn't * have it / #if (!APR_HAVE_STRCASECMP) && (APR_HAVE_STRICMP) #define strcasecmp(s1, s2) stricmp(s1, s2) #elif (!APR_HAVE_STRCASECMP) int strcasecmp(const char a, const char b); #endif #if (!APR_HAVE_STRNCASECMP) && (APR_HAVE_STRNICMP) #define strncasecmp(s1, s2, n) strnicmp(s1, s2, n) #elif (!APR_HAVE_STRNCASECMP) int strncasecmp(const char a, const char b, size_t n); #endif #endif /* * Alignment macros / / APR_ALIGN() is only to be used to align on a power of 2 boundary / #define APR_ALIGN(size, boundary) \ (((size) + ((boundary) - 1)) & ~((boundary) - 1)) /* Default alignment / #define APR_ALIGN_DEFAULT(size) APR_ALIGN(size, 8) /* * String and memory functions / / APR_STRINGIFY is defined here, and also in apr_release.h, so wrap it / #ifndef APR_STRINGIFY /* Properly quote a value as a string in the C preprocessor / #define APR_STRINGIFY(n) APR_STRINGIFY_HELPER(n) /* Helper macro for APR_STRINGIFY / #define APR_STRINGIFY_HELPER(n) #n #endif #if (!APR_HAVE_MEMMOVE) #define memmove(a,b,c) bcopy(b,a,c) #endif #if (!APR_HAVE_MEMCHR) void memchr(const void s, int c, size_t n); #endif /* @} / /* * @defgroup apr_library Library initialization and termination * @{ / /* * Setup any APR internal data structures. This MUST be the first function * called for any APR library. It is safe to call apr_initialize several * times as long as apr_terminate() is called the same number of times. * @remark See apr_app_initialize() if this is an application, rather than * a library consumer of apr. / APR_DECLARE(apr_status_t) apr_initialize(void); /* * Set up an application with normalized argc, argv (and optionally env) in * order to deal with platform-specific oddities, such as Win32 services, * code pages and signals. This must be the first function called for any * APR program. * @param argc Pointer to the argc that may be corrected * @param argv Pointer to the argv that may be corrected * @param env Pointer to the env that may be corrected, may be NULL * @remark See apr_initialize() if this is a library consumer of apr. * Otherwise, this call is identical to apr_initialize(), and must be closed * with a call to apr_terminate() at the end of program execution. / APR_DECLARE(apr_status_t) apr_app_initialize(int argc, char const * const * argv, char const const * env); /* * Tear down any APR internal data structures which aren't torn down * automatically. apr_terminate must be called once for every call to * apr_initialize() or apr_app_initialize(). * @remark An APR program must call this function at termination once it * has stopped using APR services. The APR developers suggest using * @c atexit(apr_terminate) to ensure this is called. When using APR * from a language other than C that has problems with the calling * convention, use apr_terminate2() instead. * @see apr_terminate2 / APR_DECLARE_NONSTD(void) apr_terminate(void); /* * Tear down any APR internal data structures which aren't torn down * automatically, same as apr_terminate() * @remark An APR program must call either the apr_terminate() or apr_terminate2 * function once it it has finished using APR services. The APR * developers suggest using @c atexit(apr_terminate) to ensure this is done. * apr_terminate2 exists to allow non-c language apps to tear down apr, * while apr_terminate() is recommended from c language applications. / APR_DECLARE(void) apr_terminate2(void); /* @} / /* * @defgroup apr_random Random Functions * @{ / #if APR_HAS_RANDOM \|\| defined(DOXYGEN) / TODO: I'm not sure this is the best place to put this prototype.../ /* * Generate random bytes. * @param buf Buffer to fill with random bytes * @param length Length of buffer in bytes / APR_DECLARE(apr_status_t) apr_generate_random_bytes(unsigned char buf, apr_size_t length); #endif /** @} / #ifdef __cplusplus } #endif #endif / ! APR_GENERAL_H */ Back

Edit File : apr_general.h | Size : 7.34 KB

/* 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_GENERAL_H
#define APR_GENERAL_H

/**
 * @file apr_general.h
 * This is collection of oddballs that didn't fit anywhere else,
 * and might move to more appropriate headers with the release
 * of APR 1.0.
 * @brief APR Miscellaneous library routines
 */

#include "apr.h"
#include "apr_pools.h"
#include "apr_errno.h"

#if APR_HAVE_SIGNAL_H
#include <signal.h>
#endif

#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */

/**
 * @defgroup apr_general Miscellaneous library routines
 * @ingroup APR 
 * This is collection of oddballs that didn't fit anywhere else,
 * and might move to more appropriate headers with the release
 * of APR 1.0.
 * @{
 */

/** FALSE */
#ifndef FALSE
#define FALSE 0
#endif
/** TRUE */
#ifndef TRUE
#define TRUE (!FALSE)
#endif

/** a space */
#define APR_ASCII_BLANK  '\040'
/** a carrige return */
#define APR_ASCII_CR     '\015'
/** a line feed */
#define APR_ASCII_LF     '\012'
/** a tab */
#define APR_ASCII_TAB    '\011'

/** signal numbers typedef */
typedef int               apr_signum_t;

/**
 * Finding offsets of elements within structures.
 * Taken from the X code... they've sweated portability of this stuff
 * so we don't have to.  Sigh...
 * @param p_type pointer type name
 * @param field  data field within the structure pointed to
 * @return offset
 */

#if defined(CRAY) || (defined(__arm) && !(defined(LINUX) || defined(__FreeBSD__)))
#ifdef __STDC__
#define APR_OFFSET(p_type,field) _Offsetof(p_type,field)
#else
#ifdef CRAY2
#define APR_OFFSET(p_type,field) \
        (sizeof(int)*((unsigned int)&(((p_type)NULL)->field)))

#else /* !CRAY2 */

#define APR_OFFSET(p_type,field) ((unsigned int)&(((p_type)NULL)->field))

#endif /* !CRAY2 */
#endif /* __STDC__ */
#else /* ! (CRAY || __arm) */

#define APR_OFFSET(p_type,field) \
        ((long) (((char *) (&(((p_type)NULL)->field))) - ((char *) NULL)))

#endif /* !CRAY */

/**
 * Finding offsets of elements within structures.
 * @param s_type structure type name
 * @param field  data field within the structure
 * @return offset
 */
#if defined(__has_builtin)
#if __has_builtin(__builtin_offsetof)
#define APR_OFFSETOF(s_type,field) __builtin_offsetof(s_type,field)
#endif
#endif /* __has_builtin */
#ifndef APR_OFFSETOF
#if defined(offsetof) && !defined(__cplusplus)
#define APR_OFFSETOF(s_type,field) offsetof(s_type,field)
#else
#define APR_OFFSETOF(s_type,field) APR_OFFSET(s_type*,field)
#endif
#endif /* ndef APR_OFFSETOF */

#ifndef DOXYGEN

/* A couple of prototypes for functions in case some platform doesn't 
 * have it
 */
#if (!APR_HAVE_STRCASECMP) && (APR_HAVE_STRICMP) 
#define strcasecmp(s1, s2) stricmp(s1, s2)
#elif (!APR_HAVE_STRCASECMP)
int strcasecmp(const char *a, const char *b);
#endif

#if (!APR_HAVE_STRNCASECMP) && (APR_HAVE_STRNICMP)
#define strncasecmp(s1, s2, n) strnicmp(s1, s2, n)
#elif (!APR_HAVE_STRNCASECMP)
int strncasecmp(const char *a, const char *b, size_t n);
#endif

#endif

/**
 * Alignment macros
 */

/* APR_ALIGN() is only to be used to align on a power of 2 boundary */
#define APR_ALIGN(size, boundary) \
    (((size) + ((boundary) - 1)) & ~((boundary) - 1))

/** Default alignment */
#define APR_ALIGN_DEFAULT(size) APR_ALIGN(size, 8)

/**
 * String and memory functions
 */

/* APR_STRINGIFY is defined here, and also in apr_release.h, so wrap it */
#ifndef APR_STRINGIFY
/** Properly quote a value as a string in the C preprocessor */
#define APR_STRINGIFY(n) APR_STRINGIFY_HELPER(n)
/** Helper macro for APR_STRINGIFY */
#define APR_STRINGIFY_HELPER(n) #n
#endif

#if (!APR_HAVE_MEMMOVE)
#define memmove(a,b,c) bcopy(b,a,c)
#endif

#if (!APR_HAVE_MEMCHR)
void *memchr(const void *s, int c, size_t n);
#endif

/** @} */

/**
 * @defgroup apr_library Library initialization and termination
 * @{
 */

/**
 * Setup any APR internal data structures.  This MUST be the first function 
 * called for any APR library. It is safe to call apr_initialize several
 * times as long as apr_terminate() is called the same number of times.
 * @remark See apr_app_initialize() if this is an application, rather than
 * a library consumer of apr.
 */
APR_DECLARE(apr_status_t) apr_initialize(void);

/**
 * Set up an application with normalized argc, argv (and optionally env) in
 * order to deal with platform-specific oddities, such as Win32 services,
 * code pages and signals.  This must be the first function called for any
 * APR program.
 * @param argc Pointer to the argc that may be corrected
 * @param argv Pointer to the argv that may be corrected
 * @param env Pointer to the env that may be corrected, may be NULL
 * @remark See apr_initialize() if this is a library consumer of apr.
 * Otherwise, this call is identical to apr_initialize(), and must be closed
 * with a call to apr_terminate() at the end of program execution.
 */
APR_DECLARE(apr_status_t) apr_app_initialize(int *argc, 
                                             char const * const * *argv, 
                                             char const * const * *env);

/**
 * Tear down any APR internal data structures which aren't torn down 
 * automatically. apr_terminate must be called once for every call to
 * apr_initialize() or apr_app_initialize().
 * @remark An APR program must call this function at termination once it 
 *         has stopped using APR services.  The APR developers suggest using
 *         @c atexit(apr_terminate) to ensure this is called.  When using APR
 *         from a language other than C that has problems with the calling
 *         convention, use apr_terminate2() instead.
 * @see apr_terminate2
 */
APR_DECLARE_NONSTD(void) apr_terminate(void);

/**
 * Tear down any APR internal data structures which aren't torn down 
 * automatically, same as apr_terminate()
 * @remark An APR program must call either the apr_terminate() or apr_terminate2
 *         function once it it has finished using APR services.  The APR 
 *         developers suggest using @c atexit(apr_terminate) to ensure this is done.
 *         apr_terminate2 exists to allow non-c language apps to tear down apr, 
 *         while apr_terminate() is recommended from c language applications.
 */
APR_DECLARE(void) apr_terminate2(void);

/** @} */

/**
 * @defgroup apr_random Random Functions
 * @{
 */

#if APR_HAS_RANDOM || defined(DOXYGEN)

/* TODO: I'm not sure this is the best place to put this prototype...*/
/**
 * Generate random bytes.
 * @param buf Buffer to fill with random bytes
 * @param length Length of buffer in bytes
 */
APR_DECLARE(apr_status_t) apr_generate_random_bytes(unsigned char * buf, 
                                                    apr_size_t length);

#endif
/** @} */

#ifdef __cplusplus
}
#endif

#endif  /* ! APR_GENERAL_H */

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