/**
 * @file   compat/strings.h
 * @author Martin Pulec     <martin.pulec@cesnet.cz>
 *
 * compatibility header for strcasecmp. strdup, strerror_s
 */
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 */

#ifndef COMPAT_STRINGS_H_D54CAFC8_A1A0_4FF5_80A0_91F34FB11E12
#define COMPAT_STRINGS_H_D54CAFC8_A1A0_4FF5_80A0_91F34FB11E12
  
#include <string.h> // for strerror

#ifdef _WIN32
#ifndef strcasecmp
#define strcasecmp _stricmp
#endif
#ifndef strncasecmp
#define strncasecmp _strnicmp
#endif // ! defined strncasecmp
#else // ! defined _WIN32
#include <strings.h> // IWYU pragma: export
#endif // _WIN32

#ifdef __cplusplus
#define COMPAT_MISC_EXT_C extern "C"
#else
#define COMPAT_MISC_EXT_C extern
#endif

// strerror_s
#ifndef _WIN32
#ifndef __STDC_LIB_EXT1__
#if ! defined __gnu_linux__ // XSI version on non-glibc
#define strerror_s(buf, bufsz, errnum) strerror_r(errnum, buf, bufsz)
#else // use the XSI variant from glibc (strerror_r is either GNU or XSI)
COMPAT_MISC_EXT_C int __xpg_strerror_r(int errcode, char *buffer, size_t length);
#define strerror_s(buf, bufsz, errnum) __xpg_strerror_r(errnum, buf, bufsz)
#endif
#endif // ! defined __STDC_LIB_EXT1__
#endif // ! defined _WIN32

// strdupa is defined as a macro
#include <string.h>
#ifndef strdupa
#define strdupa(s) (char *) memcpy(alloca(strlen(s) + 1), s, strlen(s) + 1)
#endif // defined strdupa

COMPAT_MISC_EXT_C const char *ug_strcasestr(const char *haystack,
                                            const char *needle);

#undef COMPAT_MISC_EXT_C

#endif // ! defined COMPAT_STRINGS_H_D54CAFC8_A1A0_4FF5_80A0_91F34FB11E12
