src/TortoiseMerge/svninclude/apr_general.h

   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 #ifndef APR_GENERAL_H
  18 #define APR_GENERAL_H
  19
  20 /**
  21  * @file apr_general.h
  22  * This is collection of oddballs that didn't fit anywhere else,
  23  * and might move to more appropriate headers with the release
  24  * of APR 1.0.
  25  * @brief APR Miscellaneous library routines
  26  */
  27
  28 #include "apr.h"
  29 //#include "apr_pools.h"
  30 #include "apr_errno.h"
  31
  32 #if APR_HAVE_SIGNAL_H
  33 #include <signal.h>
  34 #endif
  35
  36 #ifdef __cplusplus
  37 extern "C" {
  38 #endif /* __cplusplus */
  39
  40 /**
  41  * @defgroup apr_general Miscellaneous library routines
  42  * @ingroup APR
  43  * This is collection of oddballs that didn't fit anywhere else,
  44  * and might move to more appropriate headers with the release
  45  * of APR 1.0.
  46  * @{
  47  */
  48
  49 /** FALSE */
  50 #ifndef FALSE
  51 #define FALSE 0
  52 #endif
  53 /** TRUE */
  54 #ifndef TRUE
  55 #define TRUE (!FALSE)
  56 #endif
  57
  58 /** a space */
  59 #define APR_ASCII_BLANK  '\040'
  60 /** a carrige return */
  61 #define APR_ASCII_CR     '\015'
  62 /** a line feed */
  63 #define APR_ASCII_LF     '\012'
  64 /** a tab */
  65 #define APR_ASCII_TAB    '\011'
  66
  67 /** signal numbers typedef */
  68 typedef int               apr_signum_t;
  69
  70 /**
  71  * Finding offsets of elements within structures.
  72  * Taken from the X code... they've sweated portability of this stuff
  73  * so we don't have to.  Sigh...
  74  * @param p_type pointer type name
  75  * @param field  data field within the structure pointed to
  76  * @return offset
  77  */
  78
  79 #if defined(CRAY) || (defined(__arm) && !defined(LINUX))
  80 #ifdef __STDC__
  81 #define APR_OFFSET(p_type,field) _Offsetof(p_type,field)
  82 #else
  83 #ifdef CRAY2
  84 #define APR_OFFSET(p_type,field) \
  85         (sizeof(int)*((unsigned int)&(((p_type)NULL)->field)))
  86
  87 #else /* !CRAY2 */
  88
  89 #define APR_OFFSET(p_type,field) ((unsigned int)&(((p_type)NULL)->field))
  90
  91 #endif /* !CRAY2 */
  92 #endif /* __STDC__ */
  93 #else /* ! (CRAY || __arm) */
  94
  95 #define APR_OFFSET(p_type,field) \
  96         ((long) (((char *) (&(((p_type)NULL)->field))) - ((char *) NULL)))
  97
  98 #endif /* !CRAY */
  99
 100 /**
 101  * Finding offsets of elements within structures.
 102  * @param s_type structure type name
 103  * @param field  data field within the structure
 104  * @return offset
 105  */
 106 #if defined(offsetof) && !defined(__cplusplus)
 107 #define APR_OFFSETOF(s_type,field) offsetof(s_type,field)
 108 #else
 109 #define APR_OFFSETOF(s_type,field) APR_OFFSET(s_type*,field)
 110 #endif
 111
 112 #ifndef DOXYGEN
 113
 114 /* A couple of prototypes for functions in case some platform doesn't
 115  * have it
 116  */
 117 #if (!APR_HAVE_STRCASECMP) && (APR_HAVE_STRICMP)
 118 #define strcasecmp(s1, s2) stricmp(s1, s2)
 119 #elif (!APR_HAVE_STRCASECMP)
 120 int strcasecmp(const char *a, const char *b);
 121 #endif
 122
 123 #if (!APR_HAVE_STRNCASECMP) && (APR_HAVE_STRNICMP)
 124 #define strncasecmp(s1, s2, n) strnicmp(s1, s2, n)
 125 #elif (!APR_HAVE_STRNCASECMP)
 126 int strncasecmp(const char *a, const char *b, size_t n);
 127 #endif
 128
 129 #endif
 130
 131 /**
 132  * Alignment macros
 133  */
 134
 135 /* APR_ALIGN() is only to be used to align on a power of 2 boundary */
 136 #define APR_ALIGN(size, boundary) \
 137     (((size) + ((boundary) - 1)) & ~((boundary) - 1))
 138
 139 /** Default alignment */
 140 #define APR_ALIGN_DEFAULT(size) APR_ALIGN(size, 8)
 141
 142
 143 /**
 144  * String and memory functions
 145  */
 146
 147 /* APR_STRINGIFY is defined here, and also in apr_release.h, so wrap it */
 148 #ifndef APR_STRINGIFY
 149 /** Properly quote a value as a string in the C preprocessor */
 150 #define APR_STRINGIFY(n) APR_STRINGIFY_HELPER(n)
 151 /** Helper macro for APR_STRINGIFY */
 152 #define APR_STRINGIFY_HELPER(n) #n
 153 #endif
 154
 155 #if (!APR_HAVE_MEMMOVE)
 156 #define memmove(a,b,c) bcopy(b,a,c)
 157 #endif
 158
 159 #if (!APR_HAVE_MEMCHR)
 160 void *memchr(const void *s, int c, size_t n);
 161 #endif
 162
 163 /** @} */
 164
 165 /**
 166  * @defgroup apr_library Library initialization and termination
 167  * @{
 168  */
 169
 170 /**
 171  * Setup any APR internal data structures.  This MUST be the first function
 172  * called for any APR library.
 173  * @remark See apr_app_initialize if this is an application, rather than
 174  * a library consumer of apr.
 175  */
 176 APR_DECLARE(apr_status_t) apr_initialize(void);
 177
 178 /**
 179  * Set up an application with normalized argc, argv (and optionally env) in
 180  * order to deal with platform-specific oddities, such as Win32 services,
 181  * code pages and signals.  This must be the first function called for any
 182  * APR program.
 183  * @param argc Pointer to the argc that may be corrected
 184  * @param argv Pointer to the argv that may be corrected
 185  * @param env Pointer to the env that may be corrected, may be NULL
 186  * @remark See apr_initialize if this is a library consumer of apr.
 187  * Otherwise, this call is identical to apr_initialize, and must be closed
 188  * with a call to apr_terminate at the end of program execution.
 189  */
 190 APR_DECLARE(apr_status_t) apr_app_initialize(int *argc,
 191                                              char const * const * *argv,
 192                                              char const * const * *env);
 193
 194 /**
 195  * Tear down any APR internal data structures which aren't torn down
 196  * automatically.
 197  * @remark An APR program must call this function at termination once it
 198  *         has stopped using APR services.  The APR developers suggest using
 199  *         atexit to ensure this is called.  When using APR from a language
 200  *         other than C that has problems with the calling convention, use
 201  *         apr_terminate2() instead.
 202  */
 203 APR_DECLARE_NONSTD(void) apr_terminate(void);
 204
 205 /**
 206  * Tear down any APR internal data structures which aren't torn down
 207  * automatically, same as apr_terminate
 208  * @remark An APR program must call either the apr_terminate or apr_terminate2
 209  *         function once it it has finished using APR services.  The APR
 210  *         developers suggest using atexit(apr_terminate) to ensure this is done.
 211  *         apr_terminate2 exists to allow non-c language apps to tear down apr,
 212  *         while apr_terminate is recommended from c language applications.
 213  */
 214 APR_DECLARE(void) apr_terminate2(void);
 215
 216 /** @} */
 217
 218 /**
 219  * @defgroup apr_random Random Functions
 220  * @{
 221  */
 222
 223 #if APR_HAS_RANDOM || defined(DOXYGEN)
 224
 225 /* TODO: I'm not sure this is the best place to put this prototype...*/
 226 /**
 227  * Generate random bytes.
 228  * @param buf Buffer to fill with random bytes
 229  * @param length Length of buffer in bytes
 230  */
 231 APR_DECLARE(apr_status_t) apr_generate_random_bytes(unsigned char * buf,
 232                                                     apr_size_t length);
 233
 234 #endif
 235 /** @} */
 236
 237 #ifdef __cplusplus
 238 }
 239 #endif
 240
 241 #endif  /* ! APR_GENERAL_H */