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# cpl_port.h

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    00001 /******************************************************************************
    00002  * $Id: cpl_port.h 15372 2008-09-14 17:38:49Z rouault $
    00003  *
    00004  * Project:  CPL - Common Portability Library
    00005  * Author:   Frank Warmerdam, warmerdam@pobox.com
    00006  * Purpose:  Include file providing low level portability services for CPL.
    00007  *           This should be the first include file for any CPL based code.
    00008  *
    00009  ******************************************************************************
    00010  * Copyright (c) 1998, 2005, Frank Warmerdam <warmerdam@pobox.com>
    00011  *
    00012  * Permission is hereby granted, free of charge, to any person obtaining a
    00013  * copy of this software and associated documentation files (the "Software"),
    00014  * to deal in the Software without restriction, including without limitation
    00015  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
    00016  * and/or sell copies of the Software, and to permit persons to whom the
    00017  * Software is furnished to do so, subject to the following conditions:
    00018  *
    00019  * The above copyright notice and this permission notice shall be included
    00020  * in all copies or substantial portions of the Software.
    00021  *
    00022  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
    00023  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    00024  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
    00025  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    00026  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
    00027  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
    00028  * DEALINGS IN THE SOFTWARE.
    00029  ****************************************************************************/
    00030
    00031 #ifndef CPL_BASE_H_INCLUDED
    00032 #define CPL_BASE_H_INCLUDED
    00033
    00034 /* Remove annoying warnings Microsoft Visual C++ */
    00035 #if defined(_MSC_VER)
    00036 #  pragma warning(disable:4251 4275 4786)
    00037 #endif
    00038
    00046 /* ==================================================================== */
    00047 /*      We will use macos_pre10 to indicate compilation with MacOS      */
    00048 /*      versions before MacOS X.                                        */
    00049 /* ==================================================================== */
    00050 #ifdef macintosh
    00051 #  define macos_pre10
    00052 #endif
    00053
    00054 /* ==================================================================== */
    00055 /*      We will use WIN32 as a standard windows define.                 */
    00056 /* ==================================================================== */
    00057 #if defined(_WIN32) && !defined(WIN32) && !defined(_WIN32_WCE)
    00058 #  define WIN32
    00059 #endif
    00060
    00061 #if defined(_WINDOWS) && !defined(WIN32) && !defined(_WIN32_WCE)
    00062 #  define WIN32
    00063 #endif
    00064
    00065 /* ==================================================================== */
    00066 /*      We will use WIN32CE as a standard Windows CE (Mobile) define.   */
    00067 /* ==================================================================== */
    00068 #if defined(_WIN32_WCE)
    00069 #  define WIN32CE
    00070 #endif
    00071
    00072 /* -------------------------------------------------------------------- */
    00073 /*      The following apparently allow you to use strcpy() and other    */
    00074 /*      functions judged "unsafe" by microsoft in VS 8 (2005).          */
    00075 /* -------------------------------------------------------------------- */
    00076 #ifdef _MSC_VER
    00077 #  ifndef _CRT_SECURE_NO_DEPRECATE
    00078 #    define _CRT_SECURE_NO_DEPRECATE
    00079 #  endif
    00080 #  ifndef _CRT_NONSTDC_NO_DEPRECATE
    00081 #    define _CRT_NONSTDC_NO_DEPRECATE
    00082 #  endif
    00083 #  ifdef MSVC_USE_VLD
    00084 #    include <vld.h>
    00085 #  endif
    00086 #endif
    00087
    00088 #include "cpl_config.h"
    00089
    00090 /* ==================================================================== */
    00091 /*      This will disable most WIN32 stuff in a Cygnus build which      */
    00092 /*      defines unix to 1.                                              */
    00093 /* ==================================================================== */
    00094
    00095 #ifdef unix
    00096 #  undef WIN32
    00097 #  undef WIN32CE
    00098 #endif
    00099
    00100 #if defined(VSI_NEED_LARGEFILE64_SOURCE) && !defined(_LARGEFILE64_SOURCE)
    00101 #  define _LARGEFILE64_SOURCE 1
    00102 #endif
    00103
    00104 /* ==================================================================== */
    00105 /*      Standard include files.                                         */
    00106 /* ==================================================================== */
    00107
    00108 #include <stdio.h>
    00109 #include <stdlib.h>
    00110 #include <math.h>
    00111 #include <stdarg.h>
    00112 #include <string.h>
    00113 #include <ctype.h>
    00114 #include <limits.h>
    00115
    00116 #if !defined(WIN32CE)
    00117 #  include <time.h>
    00118 #else
    00119 #  include <wce_time.h>
    00120 #  include <wce_errno.h>
    00121 #endif
    00122
    00123
    00124 #if defined(HAVE_ERRNO_H)
    00125 #  include <errno.h>
    00126 #endif
    00127
    00128 #ifdef HAVE_LOCALE_H
    00129 #  include <locale.h>
    00130 #endif
    00131
    00132 #ifdef HAVE_DIRECT_H
    00133 #  include <direct.h>
    00134 #endif
    00135
    00136 #ifdef _AIX
    00137 #  include <strings.h>
    00138 #endif
    00139
    00140 #if defined(HAVE_LIBDBMALLOC) && defined(HAVE_DBMALLOC_H) && defined(DEBUG)
    00141 #  define DBMALLOC
    00142 #  include <dbmalloc.h>
    00143 #endif
    00144
    00145 #if !defined(DBMALLOC) && defined(HAVE_DMALLOC_H)
    00146 #  define USE_DMALLOC
    00147 #  include <dmalloc.h>
    00148 #endif
    00149
    00150 /* ==================================================================== */
    00151 /*      Base portability stuff ... this stuff may need to be            */
    00152 /*      modified for new platforms.                                     */
    00153 /* ==================================================================== */
    00154
    00155 /*---------------------------------------------------------------------
    00156  *        types for 16 and 32 bits integers, etc...
    00157  *--------------------------------------------------------------------*/
    00158 #if UINT_MAX == 65535
    00159 typedef long            GInt32;
    00160 typedef unsigned long   GUInt32;
    00161 #else
    00162 typedef int             GInt32;
    00163 typedef unsigned int    GUInt32;
    00164 #endif
    00165
    00166 typedef short           GInt16;
    00167 typedef unsigned short  GUInt16;
    00168 typedef unsigned char   GByte;
    00169 typedef int             GBool;
    00170
    00171 /* -------------------------------------------------------------------- */
    00172 /*      64bit support                                                   */
    00173 /* -------------------------------------------------------------------- */
    00174
    00175 #if defined(WIN32) && defined(_MSC_VER)
    00176
    00177 #define VSI_LARGE_API_SUPPORTED
    00178 typedef __int64          GIntBig;
    00179 typedef unsigned __int64 GUIntBig;
    00180 #define CPL_FRMT_GIB     "%I64d"
    00181 #define CPL_FRMT_GUIB     "%I64u"
    00182
    00183 #elif HAVE_LONG_LONG
    00184
    00185 typedef long long        GIntBig;
    00186 typedef unsigned long long GUIntBig;
    00187 #define CPL_FRMT_GIB     "%lld"
    00188 #define CPL_FRMT_GUIB     "%llu"
    00189
    00190 #else
    00191
    00192 typedef long             GIntBig;
    00193 typedef unsigned long    GUIntBig;
    00194 #define CPL_FRMT_GIB     "%ld"
    00195 #define CPL_FRMT_GUIB     "%lu"
    00196
    00197 #endif
    00198
    00199 /* ==================================================================== */
    00200 /*      Other standard services.                                        */
    00201 /* ==================================================================== */
    00202 #ifdef __cplusplus
    00203 #  define CPL_C_START           extern "C" {
    00204 #  define CPL_C_END             }
    00205 #else
    00206 #  define CPL_C_START
    00207 #  define CPL_C_END
    00208 #endif
    00209
    00210 #ifndef CPL_DLL
    00211 #if defined(_MSC_VER) && !defined(CPL_DISABLE_DLL)
    00212 #  define CPL_DLL     __declspec(dllexport)
    00213 #else
    00214 #  if defined(USE_GCC_VISIBILITY_FLAG)
    00215 #    define CPL_DLL     __attribute__ ((visibility("default")))
    00216 #  else
    00217 #    define CPL_DLL
    00218 #  endif
    00219 #endif
    00220 #endif
    00221
    00222 /* Should optional (normally private) interfaces be exported? */
    00223 #ifdef CPL_OPTIONAL_APIS
    00224 #  define CPL_ODLL CPL_DLL
    00225 #else
    00226 #  define CPL_ODLL
    00227 #endif
    00228
    00229 #ifndef CPL_STDCALL
    00230 #if defined(_MSC_VER) && !defined(CPL_DISABLE_STDCALL)
    00231 #  define CPL_STDCALL     __stdcall
    00232 #else
    00233 #  define CPL_STDCALL
    00234 #endif
    00235 #endif
    00236
    00237 #ifdef _MSC_VER
    00238 #  define FORCE_CDECL  __cdecl
    00239 #else
    00240 #  define FORCE_CDECL
    00241 #endif
    00242
    00243 /* TODO : support for other compilers needed */
    00244 #if defined(__GNUC__)
    00245 #define CPL_INLINE inline
    00246 #else
    00247 #define CPL_INLINE
    00248 #endif
    00249
    00250 #ifndef NULL
    00251 #  define NULL  0
    00252 #endif
    00253
    00254 #ifndef FALSE
    00255 #  define FALSE 0
    00256 #endif
    00257
    00258 #ifndef TRUE
    00259 #  define TRUE  1
    00260 #endif
    00261
    00262 #ifndef MAX
    00263 #  define MIN(a,b)      ((a<b) ? a : b)
    00264 #  define MAX(a,b)      ((a>b) ? a : b)
    00265 #endif
    00266
    00267 #ifndef ABS
    00268 #  define ABS(x)        ((x<0) ? (-1*(x)) : x)
    00269 #endif
    00270
    00271 /* -------------------------------------------------------------------- */
    00272 /*      Macro to test equality of two floating point values.            */
    00273 /*      We use fabs() function instead of ABS() macro to avoid side     */
    00274 /*      effects.                                                        */
    00275 /* -------------------------------------------------------------------- */
    00276 #ifndef CPLIsEqual
    00277 #  define CPLIsEqual(x,y) (fabs((x) - (y)) < 0.0000000000001)
    00278 #endif
    00279
    00280 #ifndef EQUAL
    00281 #if defined(WIN32) || defined(WIN32CE)
    00282 #  define EQUALN(a,b,n)           (strnicmp(a,b,n)==0)
    00283 #  define EQUAL(a,b)              (stricmp(a,b)==0)
    00284 #else
    00285 #  define EQUALN(a,b,n)           (strncasecmp(a,b,n)==0)
    00286 #  define EQUAL(a,b)              (strcasecmp(a,b)==0)
    00287 #endif
    00288 #endif
    00289
    00290 #ifdef macos_pre10
    00291 int strcasecmp(char * str1, char * str2);
    00292 int strncasecmp(char * str1, char * str2, int len);
    00293 char * strdup (char *instr);
    00294 #endif
    00295
    00296 #ifndef CPL_THREADLOCAL
    00297 #  define CPL_THREADLOCAL
    00298 #endif
    00299
    00300 /* -------------------------------------------------------------------- */
    00301 /*      Handle isnan() and isinf().  Note that isinf() and isnan()      */
    00302 /*      are supposed to be macros according to C99, defined in math.h   */
    00303 /*      Some systems (ie. Tru64) don't have isinf() at all, so if       */
    00304 /*      the macro is not defined we just assume nothing is infinite.    */
    00305 /*      This may mean we have no real CPLIsInf() on systems with isinf()*/
    00306 /*      function but no corresponding macro, but I can live with        */
    00307 /*      that since it isn't that important a test.                      */
    00308 /* -------------------------------------------------------------------- */
    00309 #ifdef _MSC_VER
    00310 #  include <float.h>
    00311 #  define CPLIsNan(x) _isnan(x)
    00312 #  define CPLIsInf(x) (!_isnan(x) && !_finite(x))
    00313 #  define CPLIsFinite(x) _finite(x)
    00314 #else
    00315 #  define CPLIsNan(x) isnan(x)
    00316 #  ifdef isinf
    00317 #    define CPLIsInf(x) isinf(x)
    00318 #    define CPLIsFinite(x) (!isnan(x) && !isinf(x))
    00319 #  else
    00320 #    define CPLIsInf(x)    FALSE
    00321 #    define CPLIsFinite(x) (!isnan(x))
    00322 #  endif
    00323 #endif
    00324
    00325 /*---------------------------------------------------------------------
    00326  *                         CPL_LSB and CPL_MSB
    00327  * Only one of these 2 macros should be defined and specifies the byte
    00328  * ordering for the current platform.
    00329  * This should be defined in the Makefile, but if it is not then
    00330  * the default is CPL_LSB (Intel ordering, LSB first).
    00331  *--------------------------------------------------------------------*/
    00332 #if defined(WORDS_BIGENDIAN) && !defined(CPL_MSB) && !defined(CPL_LSB)
    00333 #  define CPL_MSB
    00334 #endif
    00335
    00336 #if ! ( defined(CPL_LSB) || defined(CPL_MSB) )
    00337 #define CPL_LSB
    00338 #endif
    00339
    00340 #if defined(CPL_LSB)
    00341 #  define CPL_IS_LSB 1
    00342 #else
    00343 #  define CPL_IS_LSB 0
    00344 #endif
    00345
    00346 /*---------------------------------------------------------------------
    00347  *        Little endian <==> big endian byte swap macros.
    00348  *--------------------------------------------------------------------*/
    00349
    00350 #define CPL_SWAP16(x) \
    00351         ((GUInt16)( \
    00352             (((GUInt16)(x) & 0x00ffU) << 8) | \
    00353             (((GUInt16)(x) & 0xff00U) >> 8) ))
    00354
    00355 #define CPL_SWAP16PTR(x) \
    00356 {                                                                 \
    00357     GByte       byTemp, *_pabyDataT = (GByte *) (x);              \
    00358                                                                   \
    00359     byTemp = _pabyDataT[0];                                       \
    00360     _pabyDataT[0] = _pabyDataT[1];                                \
    00361     _pabyDataT[1] = byTemp;                                       \
    00362 }
    00363
    00364 #define CPL_SWAP32(x) \
    00365         ((GUInt32)( \
    00366             (((GUInt32)(x) & (GUInt32)0x000000ffUL) << 24) | \
    00367             (((GUInt32)(x) & (GUInt32)0x0000ff00UL) <<  8) | \
    00368             (((GUInt32)(x) & (GUInt32)0x00ff0000UL) >>  8) | \
    00369             (((GUInt32)(x) & (GUInt32)0xff000000UL) >> 24) ))
    00370
    00371 #define CPL_SWAP32PTR(x) \
    00372 {                                                                 \
    00373     GByte       byTemp, *_pabyDataT = (GByte *) (x);              \
    00374                                                                   \
    00375     byTemp = _pabyDataT[0];                                       \
    00376     _pabyDataT[0] = _pabyDataT[3];                                \
    00377     _pabyDataT[3] = byTemp;                                       \
    00378     byTemp = _pabyDataT[1];                                       \
    00379     _pabyDataT[1] = _pabyDataT[2];                                \
    00380     _pabyDataT[2] = byTemp;                                       \
    00381 }
    00382
    00383 #define CPL_SWAP64PTR(x) \
    00384 {                                                                 \
    00385     GByte       byTemp, *_pabyDataT = (GByte *) (x);              \
    00386                                                                   \
    00387     byTemp = _pabyDataT[0];                                       \
    00388     _pabyDataT[0] = _pabyDataT[7];                                \
    00389     _pabyDataT[7] = byTemp;                                       \
    00390     byTemp = _pabyDataT[1];                                       \
    00391     _pabyDataT[1] = _pabyDataT[6];                                \
    00392     _pabyDataT[6] = byTemp;                                       \
    00393     byTemp = _pabyDataT[2];                                       \
    00394     _pabyDataT[2] = _pabyDataT[5];                                \
    00395     _pabyDataT[5] = byTemp;                                       \
    00396     byTemp = _pabyDataT[3];                                       \
    00397     _pabyDataT[3] = _pabyDataT[4];                                \
    00398     _pabyDataT[4] = byTemp;                                       \
    00399 }
    00400
    00401
    00402 /* Until we have a safe 64 bits integer data type defined, we'll replace
    00403  * this version of the CPL_SWAP64() macro with a less efficient one.
    00404  */
    00405 /*
    00406 #define CPL_SWAP64(x) \
    00407         ((uint64)( \
    00408             (uint64)(((uint64)(x) & (uint64)0x00000000000000ffULL) << 56) | \
    00409             (uint64)(((uint64)(x) & (uint64)0x000000000000ff00ULL) << 40) | \
    00410             (uint64)(((uint64)(x) & (uint64)0x0000000000ff0000ULL) << 24) | \
    00411             (uint64)(((uint64)(x) & (uint64)0x00000000ff000000ULL) << 8) | \
    00412             (uint64)(((uint64)(x) & (uint64)0x000000ff00000000ULL) >> 8) | \
    00413             (uint64)(((uint64)(x) & (uint64)0x0000ff0000000000ULL) >> 24) | \
    00414             (uint64)(((uint64)(x) & (uint64)0x00ff000000000000ULL) >> 40) | \
    00415             (uint64)(((uint64)(x) & (uint64)0xff00000000000000ULL) >> 56) ))
    00416 */
    00417
    00418 #define CPL_SWAPDOUBLE(p) CPL_SWAP64PTR(p)
    00419
    00420 #ifdef CPL_MSB
    00421 #  define CPL_MSBWORD16(x)      (x)
    00422 #  define CPL_LSBWORD16(x)      CPL_SWAP16(x)
    00423 #  define CPL_MSBWORD32(x)      (x)
    00424 #  define CPL_LSBWORD32(x)      CPL_SWAP32(x)
    00425 #  define CPL_MSBPTR16(x)
    00426 #  define CPL_LSBPTR16(x)       CPL_SWAP16PTR(x)
    00427 #  define CPL_MSBPTR32(x)
    00428 #  define CPL_LSBPTR32(x)       CPL_SWAP32PTR(x)
    00429 #  define CPL_MSBPTR64(x)
    00430 #  define CPL_LSBPTR64(x)       CPL_SWAP64PTR(x)
    00431 #else
    00432 #  define CPL_LSBWORD16(x)      (x)
    00433 #  define CPL_MSBWORD16(x)      CPL_SWAP16(x)
    00434 #  define CPL_LSBWORD32(x)      (x)
    00435 #  define CPL_MSBWORD32(x)      CPL_SWAP32(x)
    00436 #  define CPL_LSBPTR16(x)
    00437 #  define CPL_MSBPTR16(x)       CPL_SWAP16PTR(x)
    00438 #  define CPL_LSBPTR32(x)
    00439 #  define CPL_MSBPTR32(x)       CPL_SWAP32PTR(x)
    00440 #  define CPL_LSBPTR64(x)
    00441 #  define CPL_MSBPTR64(x)       CPL_SWAP64PTR(x)
    00442 #endif
    00443
    00445 #define CPL_LSBINT16PTR(x)    ((*(GByte*)(x)) | ((*(GByte*)((x)+1)) << 8))
    00446
    00448 #define CPL_LSBINT32PTR(x)    ((*(GByte*)(x)) | ((*(GByte*)((x)+1)) << 8) | \
    00449                               ((*(GByte*)((x)+2)) << 16) | ((*(GByte*)((x)+3)) << 24))
    00450
    00451
    00452 /* Utility macro to explicitly mark intentionally unreferenced parameters. */
    00453 #ifndef UNREFERENCED_PARAM
    00454 #  ifdef UNREFERENCED_PARAMETER /* May be defined by Windows API */
    00455 #    define UNREFERENCED_PARAM(param) UNREFERENCED_PARAMETER(param)
    00456 #  else
    00457 #    define UNREFERENCED_PARAM(param) ((void)param)
    00458 #  endif /* UNREFERENCED_PARAMETER */
    00459 #endif /* UNREFERENCED_PARAM */
    00460
    00461 /***********************************************************************
    00462  * Define CPL_CVSID() macro.  It can be disabled during a build by
    00463  * defining DISABLE_CPLID in the compiler options.
    00464  *
    00465  * The cvsid_aw() function is just there to prevent reports of cpl_cvsid()
    00466  * being unused.
    00467  */
    00468
    00469 #ifndef DISABLE_CVSID
    00470 #  define CPL_CVSID(string)     static char cpl_cvsid[] = string; \
    00471 static char *cvsid_aw() { return( cvsid_aw() ? ((char *) NULL) : cpl_cvsid ); }
    00472 #else
    00473 #  define CPL_CVSID(string)
    00474 #endif
    00475
    00476 #if defined(__GNUC__) && __GNUC__ >= 3
    00477 #define CPL_PRINT_FUNC_FORMAT( format_idx, arg_idx )  __attribute__((__format__ (__printf__, format_idx, arg_idx)))
    00478 #else
    00479 #define CPL_PRINT_FUNC_FORMAT( format_idx, arg_idx )
    00480 #endif
    00481
    00482 #endif /* ndef CPL_BASE_H_INCLUDED */

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