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cpl_port.h

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00001 /****************************************************************************** 00002 * $Id: cpl_port.h,v 1.36 2004/01/06 21:42:32 warmerda Exp $ 00003 * 00004 * Project: CPL - Common Portability Library 00005 * Author: Frank Warmerdam, warmerdam@pobox.com 00006 * Purpose: 00007 * Include file providing low level portability services for CPL. This 00008 * should be the first include file for any CPL based code. It provides the 00009 * following: 00010 * 00011 * o Includes some standard system include files, such as stdio, and stdlib. 00012 * 00013 * o Defines CPL_C_START, CPL_C_END macros. 00014 * 00015 * o Ensures that some other standard macros like NULL are defined. 00016 * 00017 * o Defines some portability stuff like CPL_MSB, or CPL_LSB. 00018 * 00019 * o Ensures that core types such as GBool, GInt32, GInt16, GUInt32, 00020 * GUInt16, and GByte are defined. 00021 * 00022 ****************************************************************************** 00023 * Copyright (c) 1998, Frank Warmerdam 00024 * 00025 * Permission is hereby granted, free of charge, to any person obtaining a 00026 * copy of this software and associated documentation files (the "Software"), 00027 * to deal in the Software without restriction, including without limitation 00028 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 00029 * and/or sell copies of the Software, and to permit persons to whom the 00030 * Software is furnished to do so, subject to the following conditions: 00031 * 00032 * The above copyright notice and this permission notice shall be included 00033 * in all copies or substantial portions of the Software. 00034 * 00035 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 00036 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 00037 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 00038 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 00039 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 00040 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 00041 * DEALINGS IN THE SOFTWARE. 00042 ****************************************************************************** 00043 * 00044 * $Log: cpl_port.h,v $ 00045 * Revision 1.36 2004/01/06 21:42:32 warmerda 00046 * "Fix" for bug 455 related to CPL_IS_LSB macro. 00047 * 00048 * Revision 1.35 2003/12/11 03:16:02 warmerda 00049 * Added CPL_IS_LSB macro with value 0 (MSB) or 1 (LSB). 00050 * 00051 * Revision 1.34 2003/09/08 11:11:05 dron 00052 * Include time.h and locale.h. 00053 * 00054 * Revision 1.33 2003/05/12 14:52:56 warmerda 00055 * Use _MSC_VER to test for Microsoft Visual C++ compiler. 00056 * 00057 * Revision 1.32 2002/10/24 20:24:40 warmerda 00058 * avoid using variable names likely to conflict in macros 00059 * 00060 * Revision 1.31 2002/07/15 13:31:46 warmerda 00061 * CPL_SWAPDOUBLE had alignment problem, use CPL_SWAP64PTR 00062 * 00063 * Revision 1.30 2002/04/18 18:55:06 dron 00064 * added <ctype.h> at the list of standard include files 00065 * 00066 * Revision 1.29 2002/01/17 01:40:27 warmerda 00067 * added _LARGEFILE64_SOURCE support 00068 * 00069 * Revision 1.28 2001/08/30 21:20:49 warmerda 00070 * expand tabs 00071 * 00072 * Revision 1.27 2001/07/18 04:00:49 warmerda 00073 * added CPL_CVSID 00074 * 00075 * Revision 1.26 2001/06/21 21:17:26 warmerda 00076 * added irix 64bit file api support 00077 * 00078 * Revision 1.25 2001/04/30 18:18:38 warmerda 00079 * added macos support, standard header 00080 * 00081 * Revision 1.24 2001/01/19 21:16:41 warmerda 00082 * expanded tabs 00083 * 00084 * Revision 1.23 2001/01/13 04:06:39 warmerda 00085 * added strings.h on AIX as per patch from Dale. 00086 * 00087 * Revision 1.22 2001/01/03 16:18:07 warmerda 00088 * added GUIntBig 00089 * 00090 * Revision 1.21 2000/10/20 04:20:33 warmerda 00091 * added SWAP16PTR macros 00092 * 00093 * Revision 1.20 2000/10/13 17:32:42 warmerda 00094 * check for unix instead of IGNORE_WIN32 00095 * 00096 * Revision 1.19 2000/09/25 19:58:43 warmerda 00097 * ensure win32 doesn't get defined in Cygnus builds 00098 * 00099 * Revision 1.18 2000/07/20 13:15:03 warmerda 00100 * don't redeclare CPL_DLL 00101 */ 00102 00103 #ifndef CPL_BASE_H_INCLUDED 00104 #define CPL_BASE_H_INCLUDED 00105 00113 /* ==================================================================== */ 00114 /* We will use macos_pre10 to indicate compilation with MacOS */ 00115 /* versions before MacOS X. */ 00116 /* ==================================================================== */ 00117 #ifdef macintosh 00118 # define macos_pre10 00119 #endif 00120 00121 /* ==================================================================== */ 00122 /* We will use WIN32 as a standard windows define. */ 00123 /* ==================================================================== */ 00124 #if defined(_WIN32) && !defined(WIN32) 00125 # define WIN32 00126 #endif 00127 00128 #if defined(_WINDOWS) && !defined(WIN32) 00129 # define WIN32 00130 #endif 00131 00132 #include "cpl_config.h" 00133 00134 /* ==================================================================== */ 00135 /* This will disable most WIN32 stuff in a Cygnus build which */ 00136 /* defines unix to 1. */ 00137 /* ==================================================================== */ 00138 00139 #ifdef unix 00140 # undef WIN32 00141 #endif 00142 00143 #if defined(VSI_NEED_LARGEFILE64_SOURCE) && !defined(_LARGEFILE64_SOURCE) 00144 # define _LARGEFILE64_SOURCE 1 00145 #endif 00146 00147 /* ==================================================================== */ 00148 /* Standard include files. */ 00149 /* ==================================================================== */ 00150 00151 #include <stdio.h> 00152 #include <stdlib.h> 00153 #include <math.h> 00154 #include <stdarg.h> 00155 #include <string.h> 00156 #include <ctype.h> 00157 #include <errno.h> 00158 #include <time.h> 00159 00160 #ifdef HAVE_LOCALE_H 00161 # include <locale.h> 00162 #endif 00163 00164 #ifdef _AIX 00165 # include <strings.h> 00166 #endif 00167 00168 #if defined(HAVE_LIBDBMALLOC) && defined(HAVE_DBMALLOC_H) && defined(DEBUG) 00169 # define DBMALLOC 00170 # include <dbmalloc.h> 00171 #endif 00172 00173 #if !defined(DBMALLOC) && defined(HAVE_DMALLOC_H) 00174 # define USE_DMALLOC 00175 # include <dmalloc.h> 00176 #endif 00177 00178 /* ==================================================================== */ 00179 /* Base portability stuff ... this stuff may need to be */ 00180 /* modified for new platforms. */ 00181 /* ==================================================================== */ 00182 00183 /*--------------------------------------------------------------------- 00184 * types for 16 and 32 bits integers, etc... 00185 *--------------------------------------------------------------------*/ 00186 #if UINT_MAX == 65535 00187 typedef long GInt32; 00188 typedef unsigned long GUInt32; 00189 #else 00190 typedef int GInt32; 00191 typedef unsigned int GUInt32; 00192 #endif 00193 00194 typedef short GInt16; 00195 typedef unsigned short GUInt16; 00196 typedef unsigned char GByte; 00197 typedef int GBool; 00198 00199 /* -------------------------------------------------------------------- */ 00200 /* 64bit support */ 00201 /* -------------------------------------------------------------------- */ 00202 00203 #if defined(WIN32) && defined(_MSC_VER) 00204 00205 #define VSI_LARGE_API_SUPPORTED 00206 typedef __int64 GIntBig; 00207 typedef unsigned __int64 GUIntBig; 00208 00209 #elif HAVE_LONG_LONG 00210 00211 typedef long long GIntBig; 00212 typedef unsigned long long GUIntBig; 00213 00214 #else 00215 00216 typedef long GIntBig; 00217 typedef unsigned long GUIntBig; 00218 00219 #endif 00220 00221 /* ==================================================================== */ 00222 /* Other standard services. */ 00223 /* ==================================================================== */ 00224 #ifdef __cplusplus 00225 # define CPL_C_START extern "C" { 00226 # define CPL_C_END } 00227 #else 00228 # define CPL_C_START 00229 # define CPL_C_END 00230 #endif 00231 00232 #ifndef CPL_DLL 00233 #if defined(_MSC_VER) && !defined(CPL_DISABLE_DLL) 00234 # define CPL_DLL __declspec(dllexport) 00235 #else 00236 # define CPL_DLL 00237 #endif 00238 #endif 00239 00240 00241 #ifndef NULL 00242 # define NULL 0 00243 #endif 00244 00245 #ifndef FALSE 00246 # define FALSE 0 00247 #endif 00248 00249 #ifndef TRUE 00250 # define TRUE 1 00251 #endif 00252 00253 #ifndef MAX 00254 # define MIN(a,b) ((a<b) ? a : b) 00255 # define MAX(a,b) ((a>b) ? a : b) 00256 #endif 00257 00258 #ifndef ABS 00259 # define ABS(x) ((x<0) ? (-1*(x)) : x) 00260 #endif 00261 00262 #ifndef EQUAL 00263 #ifdef WIN32 00264 # define EQUALN(a,b,n) (strnicmp(a,b,n)==0) 00265 # define EQUAL(a,b) (stricmp(a,b)==0) 00266 #else 00267 # define EQUALN(a,b,n) (strncasecmp(a,b,n)==0) 00268 # define EQUAL(a,b) (strcasecmp(a,b)==0) 00269 #endif 00270 #endif 00271 00272 #ifdef macos_pre10 00273 int strcasecmp(char * str1, char * str2); 00274 int strncasecmp(char * str1, char * str2, int len); 00275 char * strdup (char *instr); 00276 #endif 00277 00278 /*--------------------------------------------------------------------- 00279 * CPL_LSB and CPL_MSB 00280 * Only one of these 2 macros should be defined and specifies the byte 00281 * ordering for the current platform. 00282 * This should be defined in the Makefile, but if it is not then 00283 * the default is CPL_LSB (Intel ordering, LSB first). 00284 *--------------------------------------------------------------------*/ 00285 #if defined(WORDS_BIGENDIAN) && !defined(CPL_MSB) && !defined(CPL_LSB) 00286 # define CPL_MSB 00287 #endif 00288 00289 #if ! ( defined(CPL_LSB) || defined(CPL_MSB) ) 00290 #define CPL_LSB 00291 #endif 00292 00293 #if defined(CPL_LSB) 00294 # define CPL_IS_LSB 1 00295 #else 00296 # define CPL_IS_LSB 0 00297 #endif 00298 00299 /*--------------------------------------------------------------------- 00300 * Little endian <==> big endian byte swap macros. 00301 *--------------------------------------------------------------------*/ 00302 00303 #define CPL_SWAP16(x) \ 00304 ((GUInt16)( \ 00305 (((GUInt16)(x) & 0x00ffU) << 8) | \ 00306 (((GUInt16)(x) & 0xff00U) >> 8) )) 00307 00308 #define CPL_SWAP16PTR(x) \ 00309 { \ 00310 GByte byTemp, *_pabyDataT = (GByte *) (x); \ 00311 \ 00312 byTemp = _pabyDataT[0]; \ 00313 _pabyDataT[0] = _pabyDataT[1]; \ 00314 _pabyDataT[1] = byTemp; \ 00315 } 00316 00317 #define CPL_SWAP32(x) \ 00318 ((GUInt32)( \ 00319 (((GUInt32)(x) & (GUInt32)0x000000ffUL) << 24) | \ 00320 (((GUInt32)(x) & (GUInt32)0x0000ff00UL) << 8) | \ 00321 (((GUInt32)(x) & (GUInt32)0x00ff0000UL) >> 8) | \ 00322 (((GUInt32)(x) & (GUInt32)0xff000000UL) >> 24) )) 00323 00324 #define CPL_SWAP32PTR(x) \ 00325 { \ 00326 GByte byTemp, *_pabyDataT = (GByte *) (x); \ 00327 \ 00328 byTemp = _pabyDataT[0]; \ 00329 _pabyDataT[0] = _pabyDataT[3]; \ 00330 _pabyDataT[3] = byTemp; \ 00331 byTemp = _pabyDataT[1]; \ 00332 _pabyDataT[1] = _pabyDataT[2]; \ 00333 _pabyDataT[2] = byTemp; \ 00334 } 00335 00336 #define CPL_SWAP64PTR(x) \ 00337 { \ 00338 GByte byTemp, *_pabyDataT = (GByte *) (x); \ 00339 \ 00340 byTemp = _pabyDataT[0]; \ 00341 _pabyDataT[0] = _pabyDataT[7]; \ 00342 _pabyDataT[7] = byTemp; \ 00343 byTemp = _pabyDataT[1]; \ 00344 _pabyDataT[1] = _pabyDataT[6]; \ 00345 _pabyDataT[6] = byTemp; \ 00346 byTemp = _pabyDataT[2]; \ 00347 _pabyDataT[2] = _pabyDataT[5]; \ 00348 _pabyDataT[5] = byTemp; \ 00349 byTemp = _pabyDataT[3]; \ 00350 _pabyDataT[3] = _pabyDataT[4]; \ 00351 _pabyDataT[4] = byTemp; \ 00352 } 00353 00354 00355 /* Until we have a safe 64 bits integer data type defined, we'll replace 00356 m * this version of the CPL_SWAP64() macro with a less efficient one. 00357 */ 00358 /* 00359 #define CPL_SWAP64(x) \ 00360 ((uint64)( \ 00361 (uint64)(((uint64)(x) & (uint64)0x00000000000000ffULL) << 56) | \ 00362 (uint64)(((uint64)(x) & (uint64)0x000000000000ff00ULL) << 40) | \ 00363 (uint64)(((uint64)(x) & (uint64)0x0000000000ff0000ULL) << 24) | \ 00364 (uint64)(((uint64)(x) & (uint64)0x00000000ff000000ULL) << 8) | \ 00365 (uint64)(((uint64)(x) & (uint64)0x000000ff00000000ULL) >> 8) | \ 00366 (uint64)(((uint64)(x) & (uint64)0x0000ff0000000000ULL) >> 24) | \ 00367 (uint64)(((uint64)(x) & (uint64)0x00ff000000000000ULL) >> 40) | \ 00368 (uint64)(((uint64)(x) & (uint64)0xff00000000000000ULL) >> 56) )) 00369 */ 00370 00371 #define CPL_SWAPDOUBLE(p) CPL_SWAP64PTR(p) 00372 00373 #ifdef CPL_MSB 00374 # define CPL_MSBWORD16(x) (x) 00375 # define CPL_LSBWORD16(x) CPL_SWAP16(x) 00376 # define CPL_MSBWORD32(x) (x) 00377 # define CPL_LSBWORD32(x) CPL_SWAP32(x) 00378 # define CPL_MSBPTR16(x) 00379 # define CPL_LSBPTR16(x) CPL_SWAP16PTR(x) 00380 # define CPL_MSBPTR32(x) 00381 # define CPL_LSBPTR32(x) CPL_SWAP32PTR(x) 00382 # define CPL_MSBPTR64(x) 00383 # define CPL_LSBPTR64(x) CPL_SWAP64PTR(x) 00384 #else 00385 # define CPL_LSBWORD16(x) (x) 00386 # define CPL_MSBWORD16(x) CPL_SWAP16(x) 00387 # define CPL_LSBWORD32(x) (x) 00388 # define CPL_MSBWORD32(x) CPL_SWAP32(x) 00389 # define CPL_LSBPTR16(x) 00390 # define CPL_MSBPTR16(x) CPL_SWAP16PTR(x) 00391 # define CPL_LSBPTR32(x) 00392 # define CPL_MSBPTR32(x) CPL_SWAP32PTR(x) 00393 # define CPL_LSBPTR64(x) 00394 # define CPL_MSBPTR64(x) CPL_SWAP64PTR(x) 00395 #endif 00396 00397 /*********************************************************************** 00398 * Define CPL_CVSID() macro. It can be disabled during a build by 00399 * defining DISABLE_CPLID in the compiler options. 00400 * 00401 * The cvsid_aw() function is just there to prevent reports of cpl_cvsid() 00402 * being unused. 00403 */ 00404 00405 #ifndef DISABLE_CVSID 00406 # define CPL_CVSID(string) static char cpl_cvsid[] = string; \ 00407 static char *cvsid_aw() { return( cvsid_aw() ? ((char *) NULL) : cpl_cvsid ); } 00408 #else 00409 # define CPL_CVSID(string) 00410 #endif 00411 00412 #endif /* ndef CPL_BASE_H_INCLUDED */

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