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cpl_port.h
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1/******************************************************************************
2 * $Id$
3 *
4 * Project: CPL - Common Portability Library
5 * Author: Frank Warmerdam, warmerdam@pobox.com
6 * Purpose: Include file providing low level portability services for CPL.
7 * This should be the first include file for any CPL based code.
8 *
9 ******************************************************************************
10 * Copyright (c) 1998, 2005, Frank Warmerdam <warmerdam@pobox.com>
11 * Copyright (c) 2008-2013, Even Rouault <even dot rouault at spatialys.com>
12 *
13 * Permission is hereby granted, free of charge, to any person obtaining a
14 * copy of this software and associated documentation files (the "Software"),
15 * to deal in the Software without restriction, including without limitation
16 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
17 * and/or sell copies of the Software, and to permit persons to whom the
18 * Software is furnished to do so, subject to the following conditions:
19 *
20 * The above copyright notice and this permission notice shall be included
21 * in all copies or substantial portions of the Software.
22 *
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
24 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
25 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
26 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
27 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
28 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
29 * DEALINGS IN THE SOFTWARE.
30 ****************************************************************************/
31
32#ifndef CPL_BASE_H_INCLUDED
33#define CPL_BASE_H_INCLUDED
34
42/* -------------------------------------------------------------------- */
43/* The following apparently allow you to use strcpy() and other */
44/* functions judged "unsafe" by microsoft in VS 8 (2005). */
45/* -------------------------------------------------------------------- */
46#ifdef _MSC_VER
47#ifndef _CRT_SECURE_NO_DEPRECATE
48#define _CRT_SECURE_NO_DEPRECATE
49#endif
50#ifndef _CRT_NONSTDC_NO_DEPRECATE
51#define _CRT_NONSTDC_NO_DEPRECATE
52#endif
53#endif
54
55#include "cpl_config.h"
56
57/* ==================================================================== */
58/* A few sanity checks, mainly to detect problems that sometimes */
59/* arise with bad configured cross-compilation. */
60/* ==================================================================== */
61
62#if !defined(SIZEOF_INT) || SIZEOF_INT != 4
63#error "Unexpected value for SIZEOF_INT"
64#endif
65
66#if !defined(SIZEOF_UNSIGNED_LONG) || \
67 (SIZEOF_UNSIGNED_LONG != 4 && SIZEOF_UNSIGNED_LONG != 8)
68#error "Unexpected value for SIZEOF_UNSIGNED_LONG"
69#endif
70
71#if !defined(SIZEOF_VOIDP)
72#error "Unexpected value for SIZEOF_VOIDP"
73#endif
74
75/* ==================================================================== */
76/* This will disable most WIN32 stuff in a Cygnus build which */
77/* defines unix to 1. */
78/* ==================================================================== */
79
80#ifdef unix
81#undef WIN32
82#endif
83
85#if defined(VSI_NEED_LARGEFILE64_SOURCE) && !defined(_LARGEFILE64_SOURCE)
86#define _LARGEFILE64_SOURCE 1
87#endif
88
89/* ==================================================================== */
90/* If iconv() is available use extended recoding module. */
91/* Stub implementation is always compiled in, because it works */
92/* faster than iconv() for encodings it supports. */
93/* ==================================================================== */
94
95#if defined(HAVE_ICONV)
96#define CPL_RECODE_ICONV
97#endif
98
99#define CPL_RECODE_STUB
102/* ==================================================================== */
103/* MinGW stuff */
104/* ==================================================================== */
105
106/* Needed for std=c11 on Solaris to have strcasecmp() */
107#if defined(GDAL_COMPILATION) && defined(__sun__) && \
108 (__STDC_VERSION__ + 0) >= 201112L && (_XOPEN_SOURCE + 0) < 600
109#ifdef _XOPEN_SOURCE
110#undef _XOPEN_SOURCE
111#endif
112#define _XOPEN_SOURCE 600
113#endif
114
115/* ==================================================================== */
116/* Standard include files. */
117/* ==================================================================== */
118
119#include <stdio.h>
120#include <stdlib.h>
121#include <math.h>
122#include <stdarg.h>
123#include <string.h>
124#include <ctype.h>
125#include <limits.h>
126
127#include <time.h>
128
129#include <errno.h>
130
131#ifdef HAVE_LOCALE_H
132#include <locale.h>
133#endif
134
135#ifdef HAVE_DIRECT_H
136#include <direct.h>
137#endif
138
139#if !defined(_WIN32)
140#include <strings.h>
141#endif
142
143/* ==================================================================== */
144/* Base portability stuff ... this stuff may need to be */
145/* modified for new platforms. */
146/* ==================================================================== */
147
148/* -------------------------------------------------------------------- */
149/* Which versions of C++ are available. */
150/* -------------------------------------------------------------------- */
151
152/* MSVC fails to define a decent value of __cplusplus. Try to target VS2015*/
153/* as a minimum */
154
155#if defined(__cplusplus) && !defined(CPL_SUPRESS_CPLUSPLUS)
156#if !(__cplusplus >= 201103L || (defined(_MSC_VER) && _MSC_VER >= 1900))
157#error Must have C++11 or newer.
158#endif
159#if __cplusplus >= 201402L || (defined(_MSVC_LANG) && _MSVC_LANG >= 201402L)
160#define HAVE_CXX14 1
161#endif
162#if __cplusplus >= 201703L || (defined(_MSVC_LANG) && _MSVC_LANG >= 201703L)
163#define HAVE_CXX17 1
164#endif
165#endif /* __cplusplus */
166
167/*---------------------------------------------------------------------
168 * types for 16 and 32 bits integers, etc...
169 *--------------------------------------------------------------------*/
170#if UINT_MAX == 65535
171typedef long GInt32;
172typedef unsigned long GUInt32;
173#else
175typedef int GInt32;
177typedef unsigned int GUInt32;
178#endif
179
181typedef short GInt16;
183typedef unsigned short GUInt16;
185typedef unsigned char GByte;
187typedef signed char GInt8;
188/* hack for PDF driver and poppler >= 0.15.0 that defines incompatible "typedef
189 * bool GBool" */
190/* in include/poppler/goo/gtypes.h */
191#ifndef CPL_GBOOL_DEFINED
193#define CPL_GBOOL_DEFINED
196typedef int GBool;
197#endif
198
200#ifdef __cplusplus
201#define CPL_STATIC_CAST(type, expr) static_cast<type>(expr)
202#define CPL_REINTERPRET_CAST(type, expr) reinterpret_cast<type>(expr)
203#else
204#define CPL_STATIC_CAST(type, expr) ((type)(expr))
205#define CPL_REINTERPRET_CAST(type, expr) ((type)(expr))
206#endif
209/* -------------------------------------------------------------------- */
210/* 64bit support */
211/* -------------------------------------------------------------------- */
212
215typedef long long GIntBig;
218typedef unsigned long long GUIntBig;
219
221#define GINTBIG_MIN (CPL_STATIC_CAST(GIntBig, 0x80000000) << 32)
223#define GINTBIG_MAX ((CPL_STATIC_CAST(GIntBig, 0x7FFFFFFF) << 32) | 0xFFFFFFFFU)
225#define GUINTBIG_MAX \
226 ((CPL_STATIC_CAST(GUIntBig, 0xFFFFFFFFU) << 32) | 0xFFFFFFFFU)
227
229#define CPL_HAS_GINT64 1
232/* Note: we might want to use instead int64_t / uint64_t if they are available
233 */
234
236typedef GIntBig GInt64;
238typedef GUIntBig GUInt64;
239
241#define GINT64_MIN GINTBIG_MIN
243#define GINT64_MAX GINTBIG_MAX
245#define GUINT64_MAX GUINTBIG_MAX
246
247#if SIZEOF_VOIDP > 8
248#include <stddef.h> // ptrdiff_t
250typedef ptrdiff_t GPtrDiff_t;
251#elif SIZEOF_VOIDP == 8
253typedef GIntBig GPtrDiff_t;
254#else
256typedef int GPtrDiff_t;
257#endif
258
259#ifdef GDAL_COMPILATION
260#include <stdint.h>
261typedef uintptr_t GUIntptr_t;
262#define CPL_IS_ALIGNED(ptr, quant) \
263 ((CPL_REINTERPRET_CAST(GUIntptr_t, CPL_STATIC_CAST(const void *, ptr)) % \
264 (quant)) == 0)
265
266#endif
267
268#if (defined(__MSVCRT__) && !(defined(__MINGW64__) && __GNUC__ >= 10)) || \
269 (defined(_WIN32) && defined(_MSC_VER))
270#define CPL_FRMT_GB_WITHOUT_PREFIX "I64"
271#else
273#define CPL_FRMT_GB_WITHOUT_PREFIX "ll"
274#endif
275
277#define CPL_FRMT_GIB "%" CPL_FRMT_GB_WITHOUT_PREFIX "d"
279#define CPL_FRMT_GUIB "%" CPL_FRMT_GB_WITHOUT_PREFIX "u"
280
282#ifdef COMPAT_WITH_ICC_CONVERSION_CHECK
283#define CPL_INT64_FITS_ON_INT32(x) ((x) >= INT_MIN && (x) <= INT_MAX)
284#else
285#define CPL_INT64_FITS_ON_INT32(x) \
286 (CPL_STATIC_CAST(GIntBig, CPL_STATIC_CAST(int, x)) == (x))
287#endif
290/* ==================================================================== */
291/* Other standard services. */
292/* ==================================================================== */
293#ifdef __cplusplus
295#define CPL_C_START \
296 extern "C" \
297 {
299#define CPL_C_END }
300#else
301#define CPL_C_START
302#define CPL_C_END
303#endif
304
305#ifndef CPL_DLL
306#if defined(_MSC_VER) && !defined(CPL_DISABLE_DLL)
307#ifdef GDAL_COMPILATION
308#define CPL_DLL __declspec(dllexport)
309#else
310#define CPL_DLL
311#endif
312#define CPL_INTERNAL
313#else
314#if defined(USE_GCC_VISIBILITY_FLAG)
315#define CPL_DLL __attribute__((visibility("default")))
316#if !defined(__MINGW32__)
317#define CPL_INTERNAL __attribute__((visibility("hidden")))
318#else
319#define CPL_INTERNAL
320#endif
321#else
322#define CPL_DLL
323#define CPL_INTERNAL
324#endif
325#endif
326
327// Marker for unstable API
328#define CPL_UNSTABLE_API CPL_DLL
329
330#endif
331
333/* Should optional (normally private) interfaces be exported? */
334#ifdef CPL_OPTIONAL_APIS
335#define CPL_ODLL CPL_DLL
336#else
337#define CPL_ODLL
338#endif
341#ifndef CPL_STDCALL
342#if defined(_MSC_VER) && !defined(CPL_DISABLE_STDCALL)
343#define CPL_STDCALL __stdcall
344#else
345#define CPL_STDCALL
346#endif
347#endif
348
350#ifdef _MSC_VER
351#define FORCE_CDECL __cdecl
352#else
353#define FORCE_CDECL
354#endif
358/* TODO : support for other compilers needed */
359#if (defined(__GNUC__) && !defined(__NO_INLINE__)) || defined(_MSC_VER)
360#define HAS_CPL_INLINE 1
361#define CPL_INLINE __inline
362#elif defined(__SUNPRO_CC)
363#define HAS_CPL_INLINE 1
364#define CPL_INLINE inline
365#else
366#define CPL_INLINE
367#endif
370#ifndef MAX
372#define MIN(a, b) (((a) < (b)) ? (a) : (b))
374#define MAX(a, b) (((a) > (b)) ? (a) : (b))
375#endif
376
377#ifndef ABS
379#define ABS(x) (((x) < 0) ? (-1 * (x)) : (x))
380#endif
381
382#ifndef M_PI
384#define M_PI 3.14159265358979323846
385/* 3.1415926535897932384626433832795 */
386#endif
387
388/* -------------------------------------------------------------------- */
389/* Macro to test equality of two floating point values. */
390/* We use fabs() function instead of ABS() macro to avoid side */
391/* effects. */
392/* -------------------------------------------------------------------- */
394#ifndef CPLIsEqual
395#define CPLIsEqual(x, y) (fabs((x) - (y)) < 0.0000000000001)
396#endif
399/* -------------------------------------------------------------------- */
400/* Provide macros for case insensitive string comparisons. */
401/* -------------------------------------------------------------------- */
402#ifndef EQUAL
403
404#if defined(AFL_FRIENDLY) && defined(__GNUC__)
405
406static inline int CPL_afl_friendly_memcmp(const void *ptr1, const void *ptr2,
407 size_t len)
408 __attribute__((always_inline));
409
410static inline int CPL_afl_friendly_memcmp(const void *ptr1, const void *ptr2,
411 size_t len)
412{
413 const unsigned char *bptr1 = (const unsigned char *)ptr1;
414 const unsigned char *bptr2 = (const unsigned char *)ptr2;
415 while (len--)
416 {
417 unsigned char b1 = *(bptr1++);
418 unsigned char b2 = *(bptr2++);
419 if (b1 != b2)
420 return b1 - b2;
421 }
422 return 0;
423}
424
425static inline int CPL_afl_friendly_strcmp(const char *ptr1, const char *ptr2)
426 __attribute__((always_inline));
427
428static inline int CPL_afl_friendly_strcmp(const char *ptr1, const char *ptr2)
429{
430 const unsigned char *usptr1 = (const unsigned char *)ptr1;
431 const unsigned char *usptr2 = (const unsigned char *)ptr2;
432 while (1)
433 {
434 unsigned char ch1 = *(usptr1++);
435 unsigned char ch2 = *(usptr2++);
436 if (ch1 == 0 || ch1 != ch2)
437 return ch1 - ch2;
438 }
439}
440
441static inline int CPL_afl_friendly_strncmp(const char *ptr1, const char *ptr2,
442 size_t len)
443 __attribute__((always_inline));
444
445static inline int CPL_afl_friendly_strncmp(const char *ptr1, const char *ptr2,
446 size_t len)
447{
448 const unsigned char *usptr1 = (const unsigned char *)ptr1;
449 const unsigned char *usptr2 = (const unsigned char *)ptr2;
450 while (len--)
451 {
452 unsigned char ch1 = *(usptr1++);
453 unsigned char ch2 = *(usptr2++);
454 if (ch1 == 0 || ch1 != ch2)
455 return ch1 - ch2;
456 }
457 return 0;
458}
459
460static inline int CPL_afl_friendly_strcasecmp(const char *ptr1,
461 const char *ptr2)
462 __attribute__((always_inline));
463
464static inline int CPL_afl_friendly_strcasecmp(const char *ptr1,
465 const char *ptr2)
466{
467 const unsigned char *usptr1 = (const unsigned char *)ptr1;
468 const unsigned char *usptr2 = (const unsigned char *)ptr2;
469 while (1)
470 {
471 unsigned char ch1 = *(usptr1++);
472 unsigned char ch2 = *(usptr2++);
473 ch1 = (unsigned char)toupper(ch1);
474 ch2 = (unsigned char)toupper(ch2);
475 if (ch1 == 0 || ch1 != ch2)
476 return ch1 - ch2;
477 }
478}
479
480static inline int CPL_afl_friendly_strncasecmp(const char *ptr1,
481 const char *ptr2, size_t len)
482 __attribute__((always_inline));
483
484static inline int CPL_afl_friendly_strncasecmp(const char *ptr1,
485 const char *ptr2, size_t len)
486{
487 const unsigned char *usptr1 = (const unsigned char *)ptr1;
488 const unsigned char *usptr2 = (const unsigned char *)ptr2;
489 while (len--)
490 {
491 unsigned char ch1 = *(usptr1++);
492 unsigned char ch2 = *(usptr2++);
493 ch1 = (unsigned char)toupper(ch1);
494 ch2 = (unsigned char)toupper(ch2);
495 if (ch1 == 0 || ch1 != ch2)
496 return ch1 - ch2;
497 }
498 return 0;
499}
500
501static inline char *CPL_afl_friendly_strstr(const char *haystack,
502 const char *needle)
503 __attribute__((always_inline));
504
505static inline char *CPL_afl_friendly_strstr(const char *haystack,
506 const char *needle)
507{
508 const char *ptr_haystack = haystack;
509 while (1)
510 {
511 const char *ptr_haystack2 = ptr_haystack;
512 const char *ptr_needle = needle;
513 while (1)
514 {
515 char ch1 = *(ptr_haystack2++);
516 char ch2 = *(ptr_needle++);
517 if (ch2 == 0)
518 return (char *)ptr_haystack;
519 if (ch1 != ch2)
520 break;
521 }
522 if (*ptr_haystack == 0)
523 return NULL;
524 ptr_haystack++;
525 }
526}
527
528#undef strcmp
529#undef strncmp
530#define memcmp CPL_afl_friendly_memcmp
531#define strcmp CPL_afl_friendly_strcmp
532#define strncmp CPL_afl_friendly_strncmp
533#define strcasecmp CPL_afl_friendly_strcasecmp
534#define strncasecmp CPL_afl_friendly_strncasecmp
535#define strstr CPL_afl_friendly_strstr
536
537#endif /* defined(AFL_FRIENDLY) && defined(__GNUC__) */
538
539#if defined(_WIN32)
540#define STRCASECMP(a, b) (_stricmp(a, b))
541#define STRNCASECMP(a, b, n) (_strnicmp(a, b, n))
542#else
544#define STRCASECMP(a, b) (strcasecmp(a, b))
546#define STRNCASECMP(a, b, n) (strncasecmp(a, b, n))
547#endif
549#define EQUALN(a, b, n) (STRNCASECMP(a, b, n) == 0)
551#define EQUAL(a, b) (STRCASECMP(a, b) == 0)
552#endif
553
554/*---------------------------------------------------------------------
555 * Does a string "a" start with string "b". Search is case-sensitive or,
556 * with CI, it is a case-insensitive comparison.
557 *--------------------------------------------------------------------- */
558#ifndef STARTS_WITH_CI
560#define STARTS_WITH(a, b) (strncmp(a, b, strlen(b)) == 0)
562#define STARTS_WITH_CI(a, b) EQUALN(a, b, strlen(b))
563#endif
564
566#ifndef CPL_THREADLOCAL
567#define CPL_THREADLOCAL
568#endif
571/* -------------------------------------------------------------------- */
572/* Handle isnan() and isinf(). Note that isinf() and isnan() */
573/* are supposed to be macros according to C99, defined in math.h */
574/* Some systems (i.e. Tru64) don't have isinf() at all, so if */
575/* the macro is not defined we just assume nothing is infinite. */
576/* This may mean we have no real CPLIsInf() on systems with isinf()*/
577/* function but no corresponding macro, but I can live with */
578/* that since it isn't that important a test. */
579/* -------------------------------------------------------------------- */
580#ifdef _MSC_VER
581#include <float.h>
582#define CPLIsNan(x) _isnan(x)
583#define CPLIsInf(x) (!_isnan(x) && !_finite(x))
584#define CPLIsFinite(x) _finite(x)
585#elif defined(__GNUC__) && \
586 (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4))
587/* When including <cmath> in C++11 the isnan() macro is undefined, so that */
588/* std::isnan() can work (#6489). This is a GCC specific workaround for now. */
589#define CPLIsNan(x) __builtin_isnan(x)
590#define CPLIsInf(x) __builtin_isinf(x)
591#define CPLIsFinite(x) __builtin_isfinite(x)
592#elif defined(__cplusplus) && defined(HAVE_STD_IS_NAN) && HAVE_STD_IS_NAN
593extern "C++"
594{
595#ifndef DOXYGEN_SKIP
596#include <cmath>
597#endif
598 static inline int CPLIsNan(float f)
599 {
600 return std::isnan(f);
601 }
602
603 static inline int CPLIsNan(double f)
604 {
605 return std::isnan(f);
606 }
607
608 static inline int CPLIsInf(float f)
609 {
610 return std::isinf(f);
611 }
612
613 static inline int CPLIsInf(double f)
614 {
615 return std::isinf(f);
616 }
617
618 static inline int CPLIsFinite(float f)
619 {
620 return std::isfinite(f);
621 }
622
623 static inline int CPLIsFinite(double f)
624 {
625 return std::isfinite(f);
626 }
627}
628#else
630#if defined(__cplusplus) && defined(__GNUC__) && defined(__linux) && \
631 !defined(__ANDROID__) && !defined(CPL_SUPRESS_CPLUSPLUS)
632/* so to not get warning about conversion from double to float with */
633/* gcc -Wfloat-conversion when using isnan()/isinf() macros */
634extern "C++"
635{
636 static inline int CPLIsNan(float f)
637 {
638 return __isnanf(f);
639 }
640
641 static inline int CPLIsNan(double f)
642 {
643 return __isnan(f);
644 }
645
646 static inline int CPLIsInf(float f)
647 {
648 return __isinff(f);
649 }
650
651 static inline int CPLIsInf(double f)
652 {
653 return __isinf(f);
654 }
655
656 static inline int CPLIsFinite(float f)
657 {
658 return !__isnanf(f) && !__isinff(f);
659 }
660
661 static inline int CPLIsFinite(double f)
662 {
663 return !__isnan(f) && !__isinf(f);
664 }
665}
666#else
667#define CPLIsNan(x) isnan(x)
668#if defined(isinf) || defined(__FreeBSD__)
670#define CPLIsInf(x) isinf(x)
672#define CPLIsFinite(x) (!isnan(x) && !isinf(x))
673#elif defined(__sun__)
674#include <ieeefp.h>
675#define CPLIsInf(x) (!finite(x) && !isnan(x))
676#define CPLIsFinite(x) finite(x)
677#else
678#define CPLIsInf(x) (0)
679#define CPLIsFinite(x) (!isnan(x))
680#endif
681#endif
682#endif
683
685/*---------------------------------------------------------------------
686 * CPL_LSB and CPL_MSB
687 * Only one of these 2 macros should be defined and specifies the byte
688 * ordering for the current platform.
689 * This should be defined in the Makefile, but if it is not then
690 * the default is CPL_LSB (Intel ordering, LSB first).
691 *--------------------------------------------------------------------*/
692#if defined(WORDS_BIGENDIAN) && !defined(CPL_MSB) && !defined(CPL_LSB)
693#define CPL_MSB
694#endif
695
696#if !(defined(CPL_LSB) || defined(CPL_MSB))
697#define CPL_LSB
698#endif
699
700#if defined(CPL_LSB)
701#define CPL_IS_LSB 1
702#else
703#define CPL_IS_LSB 0
704#endif
707#if defined(__cplusplus) && !defined(CPL_SUPRESS_CPLUSPLUS)
708
710extern "C++"
711{
712
713 template <bool b> struct CPLStaticAssert
714 {
715 };
716
717 template <> struct CPLStaticAssert<true>
718 {
719 static void my_function()
720 {
721 }
722 };
723
724} /* extern "C++" */
725
726#define CPL_STATIC_ASSERT(x) CPLStaticAssert<x>::my_function()
727#define CPL_STATIC_ASSERT_IF_AVAILABLE(x) CPL_STATIC_ASSERT(x)
728
729#else /* __cplusplus */
730
731#define CPL_STATIC_ASSERT_IF_AVAILABLE(x)
732
733#endif /* __cplusplus */
736/*---------------------------------------------------------------------
737 * Little endian <==> big endian byte swap macros.
738 *--------------------------------------------------------------------*/
739
741#define CPL_SWAP16(x) \
742 CPL_STATIC_CAST(GUInt16, (CPL_STATIC_CAST(GUInt16, x) << 8) | \
743 (CPL_STATIC_CAST(GUInt16, x) >> 8))
744
745#if defined(HAVE_GCC_BSWAP)
747#define CPL_SWAP32(x) \
748 CPL_STATIC_CAST(GUInt32, __builtin_bswap32(CPL_STATIC_CAST(GUInt32, x)))
750#define CPL_SWAP64(x) \
751 CPL_STATIC_CAST(GUInt64, __builtin_bswap64(CPL_STATIC_CAST(GUInt64, x)))
752#elif defined(_MSC_VER)
753#define CPL_SWAP32(x) \
754 CPL_STATIC_CAST(GUInt32, _byteswap_ulong(CPL_STATIC_CAST(GUInt32, x)))
755#define CPL_SWAP64(x) \
756 CPL_STATIC_CAST(GUInt64, _byteswap_uint64(CPL_STATIC_CAST(GUInt64, x)))
757#else
759#define CPL_SWAP32(x) \
760 CPL_STATIC_CAST(GUInt32, \
761 ((CPL_STATIC_CAST(GUInt32, x) & 0x000000ffU) << 24) | \
762 ((CPL_STATIC_CAST(GUInt32, x) & 0x0000ff00U) << 8) | \
763 ((CPL_STATIC_CAST(GUInt32, x) & 0x00ff0000U) >> 8) | \
764 ((CPL_STATIC_CAST(GUInt32, x) & 0xff000000U) >> 24))
765
767#define CPL_SWAP64(x) \
768 ((CPL_STATIC_CAST(GUInt64, CPL_SWAP32(CPL_STATIC_CAST(GUInt32, x))) \
769 << 32) | \
770 (CPL_STATIC_CAST(GUInt64, \
771 CPL_SWAP32(CPL_STATIC_CAST( \
772 GUInt32, CPL_STATIC_CAST(GUInt64, x) >> 32)))))
773
774#endif
775
777#define CPL_SWAP16PTR(x) \
778 do \
779 { \
780 GUInt16 _n16; \
781 void *_lx = x; \
782 memcpy(&_n16, _lx, 2); \
783 CPL_STATIC_ASSERT_IF_AVAILABLE(sizeof(*(x)) == 1 || \
784 sizeof(*(x)) == 2); \
785 _n16 = CPL_SWAP16(_n16); \
786 memcpy(_lx, &_n16, 2); \
787 } while (0)
788
790#define CPL_SWAP32PTR(x) \
791 do \
792 { \
793 GUInt32 _n32; \
794 void *_lx = x; \
795 memcpy(&_n32, _lx, 4); \
796 CPL_STATIC_ASSERT_IF_AVAILABLE(sizeof(*(x)) == 1 || \
797 sizeof(*(x)) == 4); \
798 _n32 = CPL_SWAP32(_n32); \
799 memcpy(_lx, &_n32, 4); \
800 } while (0)
801
803#define CPL_SWAP64PTR(x) \
804 do \
805 { \
806 GUInt64 _n64; \
807 void *_lx = x; \
808 memcpy(&_n64, _lx, 8); \
809 CPL_STATIC_ASSERT_IF_AVAILABLE(sizeof(*(x)) == 1 || \
810 sizeof(*(x)) == 8); \
811 _n64 = CPL_SWAP64(_n64); \
812 memcpy(_lx, &_n64, 8); \
813 } while (0)
814
816#define CPL_SWAPDOUBLE(p) CPL_SWAP64PTR(p)
817
818#ifdef CPL_MSB
819#define CPL_MSBWORD16(x) (x)
820#define CPL_LSBWORD16(x) CPL_SWAP16(x)
821#define CPL_MSBWORD32(x) (x)
822#define CPL_LSBWORD32(x) CPL_SWAP32(x)
823#define CPL_MSBPTR16(x) \
824 CPL_STATIC_ASSERT_IF_AVAILABLE(sizeof(*(x)) == 1 || sizeof(*(x)) == 2)
825#define CPL_LSBPTR16(x) CPL_SWAP16PTR(x)
826#define CPL_MSBPTR32(x) \
827 CPL_STATIC_ASSERT_IF_AVAILABLE(sizeof(*(x)) == 1 || sizeof(*(x)) == 4)
828#define CPL_LSBPTR32(x) CPL_SWAP32PTR(x)
829#define CPL_MSBPTR64(x) \
830 CPL_STATIC_ASSERT_IF_AVAILABLE(sizeof(*(x)) == 1 || sizeof(*(x)) == 8)
831#define CPL_LSBPTR64(x) CPL_SWAP64PTR(x)
832#else
834#define CPL_LSBWORD16(x) (x)
836#define CPL_MSBWORD16(x) CPL_SWAP16(x)
838#define CPL_LSBWORD32(x) (x)
840#define CPL_MSBWORD32(x) CPL_SWAP32(x)
843#define CPL_LSBPTR16(x) \
844 CPL_STATIC_ASSERT_IF_AVAILABLE(sizeof(*(x)) == 1 || sizeof(*(x)) == 2)
847#define CPL_MSBPTR16(x) CPL_SWAP16PTR(x)
850#define CPL_LSBPTR32(x) \
851 CPL_STATIC_ASSERT_IF_AVAILABLE(sizeof(*(x)) == 1 || sizeof(*(x)) == 4)
854#define CPL_MSBPTR32(x) CPL_SWAP32PTR(x)
857#define CPL_LSBPTR64(x) \
858 CPL_STATIC_ASSERT_IF_AVAILABLE(sizeof(*(x)) == 1 || sizeof(*(x)) == 8)
861#define CPL_MSBPTR64(x) CPL_SWAP64PTR(x)
862#endif
863
867#define CPL_LSBINT16PTR(x) \
868 ((*CPL_REINTERPRET_CAST(const GByte *, x)) | \
869 (*((CPL_REINTERPRET_CAST(const GByte *, x)) + 1) << 8))
870
874#define CPL_LSBINT32PTR(x) \
875 ((*CPL_REINTERPRET_CAST(const GByte *, x)) | \
876 (*((CPL_REINTERPRET_CAST(const GByte *, x)) + 1) << 8) | \
877 (*((CPL_REINTERPRET_CAST(const GByte *, x)) + 2) << 16) | \
878 (*((CPL_REINTERPRET_CAST(const GByte *, x)) + 3) << 24))
879
881#define CPL_LSBSINT16PTR(x) CPL_STATIC_CAST(GInt16, CPL_LSBINT16PTR(x))
882
885#define CPL_LSBUINT16PTR(x) CPL_STATIC_CAST(GUInt16, CPL_LSBINT16PTR(x))
886
888#define CPL_LSBSINT32PTR(x) CPL_STATIC_CAST(GInt32, CPL_LSBINT32PTR(x))
889
892#define CPL_LSBUINT32PTR(x) CPL_STATIC_CAST(GUInt32, CPL_LSBINT32PTR(x))
893
895/* Utility macro to explicitly mark intentionally unreferenced parameters. */
896#ifndef UNREFERENCED_PARAM
897#ifdef UNREFERENCED_PARAMETER /* May be defined by Windows API */
898#define UNREFERENCED_PARAM(param) UNREFERENCED_PARAMETER(param)
899#else
900#define UNREFERENCED_PARAM(param) ((void)param)
901#endif /* UNREFERENCED_PARAMETER */
902#endif /* UNREFERENCED_PARAM */
905/***********************************************************************
906 * Define CPL_CVSID() macro. It can be disabled during a build by
907 * defining DISABLE_CVSID in the compiler options.
908 *
909 * The cvsid_aw() function is just there to prevent reports of cpl_cvsid()
910 * being unused.
911 */
912
914#ifndef DISABLE_CVSID
915#if defined(__GNUC__) && __GNUC__ >= 4
916#define CPL_CVSID(string) \
917 static const char cpl_cvsid[] __attribute__((used)) = string;
918#else
919#define CPL_CVSID(string) \
920 static const char cpl_cvsid[] = string; \
921 static const char *cvsid_aw() \
922 { \
923 return (cvsid_aw() ? NULL : cpl_cvsid); \
924 }
925#endif
926#else
927#define CPL_CVSID(string)
928#endif
931/* We exclude mingw64 4.6 which seems to be broken regarding this */
932#if defined(__GNUC__) && __GNUC__ >= 4 && !defined(DOXYGEN_SKIP) && \
933 !(defined(__MINGW64__) && __GNUC__ == 4 && __GNUC_MINOR__ == 6)
935#define CPL_NULL_TERMINATED __attribute__((__sentinel__))
936#else
938#define CPL_NULL_TERMINATED
939#endif
940
941#if defined(__GNUC__) && __GNUC__ >= 3 && !defined(DOXYGEN_SKIP)
943#define CPL_PRINT_FUNC_FORMAT(format_idx, arg_idx) \
944 __attribute__((__format__(__printf__, format_idx, arg_idx)))
946#define CPL_SCAN_FUNC_FORMAT(format_idx, arg_idx) \
947 __attribute__((__format__(__scanf__, format_idx, arg_idx)))
948#else
950#define CPL_PRINT_FUNC_FORMAT(format_idx, arg_idx)
952#define CPL_SCAN_FUNC_FORMAT(format_idx, arg_idx)
953#endif
954
955#if defined(_MSC_VER) && \
956 (defined(GDAL_COMPILATION) || defined(CPL_ENABLE_MSVC_ANNOTATIONS))
957#include <sal.h>
960#define CPL_FORMAT_STRING(arg) _Printf_format_string_ arg
963#define CPL_SCANF_FORMAT_STRING(arg) _Scanf_format_string_ arg
964#else
966#define CPL_FORMAT_STRING(arg) arg
968#define CPL_SCANF_FORMAT_STRING(arg) arg
969#endif /* defined(_MSC_VER) && defined(GDAL_COMPILATION) */
970
971#if defined(__GNUC__) && __GNUC__ >= 4 && !defined(DOXYGEN_SKIP)
973#define CPL_WARN_UNUSED_RESULT __attribute__((warn_unused_result))
974#else
976#define CPL_WARN_UNUSED_RESULT
977#endif
978
979#if defined(__GNUC__) && __GNUC__ >= 4
981#define CPL_UNUSED __attribute((__unused__))
982#else
983/* TODO: add cases for other compilers */
985#define CPL_UNUSED
986#endif
987
988#if defined(__GNUC__) && __GNUC__ >= 3 && !defined(DOXYGEN_SKIP)
991#define CPL_NO_RETURN __attribute__((noreturn))
992#else
995#define CPL_NO_RETURN
996#endif
997
999/* Clang __has_attribute */
1000#ifndef __has_attribute
1001#define __has_attribute(x) 0 // Compatibility with non-clang compilers.
1002#endif
1003
1006#if ((defined(__GNUC__) && \
1007 (__GNUC__ >= 5 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 9))) || \
1008 __has_attribute(returns_nonnull)) && \
1009 !defined(DOXYGEN_SKIP) && !defined(__INTEL_COMPILER)
1011#define CPL_RETURNS_NONNULL __attribute__((returns_nonnull))
1012#else
1014#define CPL_RETURNS_NONNULL
1015#endif
1016
1017#if defined(__GNUC__) && __GNUC__ >= 4 && !defined(DOXYGEN_SKIP)
1019#define CPL_RESTRICT __restrict__
1020#else
1022#define CPL_RESTRICT
1023#endif
1024
1025#if defined(__cplusplus) && !defined(CPL_SUPRESS_CPLUSPLUS)
1026
1029#define CPL_OVERRIDE override
1030
1032#define CPL_FINAL final
1033
1035#define CPL_NON_FINAL
1036
1042#define CPL_DISALLOW_COPY_ASSIGN(ClassName) \
1043 ClassName(const ClassName &) = delete; \
1044 ClassName &operator=(const ClassName &) = delete;
1045
1046#endif /* __cplusplus */
1047
1048#if !defined(DOXYGEN_SKIP) && !defined(CPL_WARN_DEPRECATED)
1049#if defined(__has_extension)
1050#if __has_extension(attribute_deprecated_with_message)
1051/* Clang extension */
1052#define CPL_WARN_DEPRECATED(x) __attribute__((deprecated(x)))
1053#else
1054#define CPL_WARN_DEPRECATED(x)
1055#endif
1056#elif defined(__GNUC__)
1057#define CPL_WARN_DEPRECATED(x) __attribute__((deprecated))
1058#else
1059#define CPL_WARN_DEPRECATED(x)
1060#endif
1061#endif
1062
1063#if !defined(_MSC_VER) && !defined(__APPLE__) && !defined(_FORTIFY_SOURCE)
1064CPL_C_START
1065#if defined(GDAL_COMPILATION) && defined(WARN_STANDARD_PRINTF)
1066int vsnprintf(char *str, size_t size, const char *fmt, va_list args)
1067 CPL_WARN_DEPRECATED("Use CPLvsnprintf() instead");
1068int snprintf(char *str, size_t size, const char *fmt, ...)
1069 CPL_PRINT_FUNC_FORMAT(3, 4)
1070 CPL_WARN_DEPRECATED("Use CPLsnprintf() instead");
1071int sprintf(char *str, const char *fmt, ...) CPL_PRINT_FUNC_FORMAT(2, 3)
1072 CPL_WARN_DEPRECATED("Use CPLsnprintf() instead");
1073#elif defined(GDAL_COMPILATION) && !defined(DONT_DEPRECATE_SPRINTF)
1074int sprintf(char *str, const char *fmt, ...) CPL_PRINT_FUNC_FORMAT(2, 3)
1075 CPL_WARN_DEPRECATED("Use snprintf() or CPLsnprintf() instead");
1076#endif /* defined(GDAL_COMPILATION) && defined(WARN_STANDARD_PRINTF) */
1077CPL_C_END
1078#endif /* !defined(_MSC_VER) && !defined(__APPLE__) */
1079
1080#if defined(__cplusplus)
1081#ifndef CPPCHECK
1083#define CPL_ARRAYSIZE(array) \
1084 ((sizeof(array) / sizeof(*(array))) / \
1085 static_cast<size_t>(!(sizeof(array) % sizeof(*(array)))))
1086#else
1087/* simplified version for cppcheck */
1088#define CPL_ARRAYSIZE(array) (sizeof(array) / sizeof(array[0]))
1089#endif
1090
1091extern "C++"
1092{
1093 template <class T> static void CPL_IGNORE_RET_VAL(const T &)
1094 {
1095 }
1096
1097 inline static bool CPL_TO_BOOL(int x)
1098 {
1099 return x != 0;
1100 }
1101} /* extern "C++" */
1102
1103#endif /* __cplusplus */
1104
1105#if (((__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6)) || \
1106 (defined(__clang__) && __clang_major__ >= 3)) && \
1107 !defined(_MSC_VER))
1108#define HAVE_GCC_DIAGNOSTIC_PUSH
1109#endif
1110
1111#if ((__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 2)) && \
1112 !defined(_MSC_VER))
1113#define HAVE_GCC_SYSTEM_HEADER
1114#endif
1115
1118#ifndef FALSE
1119#define FALSE 0
1120#endif
1121
1122#ifndef TRUE
1123#define TRUE 1
1124#endif
1125
1126#if __clang_major__ >= 4 || (__clang_major__ == 3 && __clang_minor__ >= 8)
1127#define CPL_NOSANITIZE_UNSIGNED_INT_OVERFLOW \
1128 __attribute__((no_sanitize("unsigned-integer-overflow")))
1129#else
1130#define CPL_NOSANITIZE_UNSIGNED_INT_OVERFLOW
1131#endif
1132
1133#if defined(__cplusplus) && !defined(CPL_SUPRESS_CPLUSPLUS) && \
1134 defined(GDAL_COMPILATION)
1135extern "C++"
1136{
1137 template <class C, class A, class B>
1138 CPL_NOSANITIZE_UNSIGNED_INT_OVERFLOW inline C CPLUnsanitizedAdd(A a, B b)
1139 {
1140 return a + b;
1141 }
1142}
1143#endif
1144
1145#if defined(__cplusplus) && !defined(CPL_SUPRESS_CPLUSPLUS)
1146#define CPL_NULLPTR nullptr
1147#else
1148#define CPL_NULLPTR NULL
1149#endif
1150
1151#if defined(__cplusplus) && defined(GDAL_COMPILATION)
1152extern "C++"
1153{
1154 namespace cpl
1155 {
1160 template <typename T> inline T fits_on(T t)
1161 {
1162 return t;
1163 }
1164 } // namespace cpl
1165}
1166#endif
1167
1170/* This typedef is for C functions that take char** as argument, but */
1171/* with the semantics of a const list. In C, char** is not implicitly cast to */
1172/* const char* const*, contrary to C++. So when seen for C++, it is OK */
1173/* to expose the prototypes as const char* const*, but for C we keep the */
1174/* historical definition to avoid warnings. */
1175#if defined(__cplusplus) && !defined(CPL_SUPRESS_CPLUSPLUS) && \
1176 !defined(DOXYGEN_SKIP)
1179typedef const char *const *CSLConstList;
1180#else
1183typedef char **CSLConstList;
1184#endif
1185
1186#endif /* ndef CPL_BASE_H_INCLUDED */
GPtrDiff_t
int GPtrDiff_t
Integer type large enough to hold the difference between 2 addresses.
Definition: cpl_port.h:256
CPLIsInf
#define CPLIsInf(x)
Return whether a floating-pointer number is +/- infinity.
Definition: cpl_port.h:670
GUIntBig
unsigned long long GUIntBig
Large unsigned integer type (generally 64-bit unsigned integer type).
Definition: cpl_port.h:218
GInt16
short GInt16
Int16 type.
Definition: cpl_port.h:181
CPL_C_END
#define CPL_C_END
Macro to end a block of C symbols.
Definition: cpl_port.h:299
CPL_C_START
#define CPL_C_START
Macro to start a block of C symbols.
Definition: cpl_port.h:295
GInt64
GIntBig GInt64
Signed 64 bit integer type.
Definition: cpl_port.h:236
GBool
int GBool
Type for boolean values (alias to int)
Definition: cpl_port.h:196
GUInt32
unsigned int GUInt32
Unsigned int32 type.
Definition: cpl_port.h:177
CPL_PRINT_FUNC_FORMAT
#define CPL_PRINT_FUNC_FORMAT(format_idx, arg_idx)
Tag a function to have printf() formatting.
Definition: cpl_port.h:950
CPLIsNan
#define CPLIsNan(x)
Return whether a floating-pointer number is NaN.
Definition: cpl_port.h:667
CSLConstList
char ** CSLConstList
Type of a constant null-terminated list of nul terminated strings.
Definition: cpl_port.h:1183
GUInt64
GUIntBig GUInt64
Unsigned 64 bit integer type.
Definition: cpl_port.h:238
GUInt16
unsigned short GUInt16
Unsigned int16 type.
Definition: cpl_port.h:183
GByte
unsigned char GByte
Unsigned byte type.
Definition: cpl_port.h:185
GInt32
int GInt32
Int32 type.
Definition: cpl_port.h:175
GInt8
signed char GInt8
Signed int8 type.
Definition: cpl_port.h:187
GIntBig
long long GIntBig
Large signed integer type (generally 64-bit integer type).
Definition: cpl_port.h:215
CPLIsFinite
#define CPLIsFinite(x)
Return whether a floating-pointer number is finite.
Definition: cpl_port.h:672
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