1 /* 2 * xxhsum - Command line interface for xxhash algorithms 3 * Copyright (C) 2013-2020 Yann Collet 4 * 5 * GPL v2 License 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation; either version 2 of the License, or 10 * (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License along 18 * with this program; if not, write to the Free Software Foundation, Inc., 19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * You can contact the author at: 22 * - xxHash homepage: https://www.xxhash.com 23 * - xxHash source repository: https://github.com/Cyan4973/xxHash 24 */ 25 26 /* 27 * This contains various configuration parameters and feature detection for 28 * xxhsum. 29 * 30 * Similar to config.h in Autotools, this should be the first header included. 31 */ 32 33 #ifndef XSUM_CONFIG_H 34 #define XSUM_CONFIG_H 35 36 37 /* ************************************ 38 * Compiler Options 39 **************************************/ 40 /* 41 * Disable Visual C's warnings when using the "insecure" CRT functions instead 42 * of the "secure" _s functions. 43 * 44 * These functions are not portable, and aren't necessary if you are using the 45 * original functions properly. 46 */ 47 #if defined(_MSC_VER) || defined(_WIN32) 48 # ifndef _CRT_SECURE_NO_WARNINGS 49 # define _CRT_SECURE_NO_WARNINGS 50 # endif 51 #endif 52 53 /* Under Linux at least, pull in the *64 commands */ 54 #ifndef _LARGEFILE64_SOURCE 55 # define _LARGEFILE64_SOURCE 56 #endif 57 #ifndef _FILE_OFFSET_BITS 58 # define _FILE_OFFSET_BITS 64 59 #endif 60 61 /* 62 * So we can use __attribute__((__format__)) 63 */ 64 #ifdef __GNUC__ 65 # define XSUM_ATTRIBUTE(x) __attribute__(x) 66 #else 67 # define XSUM_ATTRIBUTE(x) 68 #endif 69 70 #if !defined(_WIN32) && (defined(__unix__) || defined(__unix) || (defined(__APPLE__) && defined(__MACH__)) /* UNIX-like OS */ \ 71 || defined(__midipix__) || defined(__VMS)) 72 # if (defined(__APPLE__) && defined(__MACH__)) || defined(__SVR4) || defined(_AIX) || defined(__hpux) /* POSIX.1-2001 (SUSv3) conformant */ \ 73 || defined(__DragonFly__) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) /* BSD distros */ 74 # define XSUM_PLATFORM_POSIX_VERSION 200112L 75 # else 76 # if defined(__linux__) || defined(__linux) 77 # ifndef _POSIX_C_SOURCE 78 # define _POSIX_C_SOURCE 200112L /* use feature test macro */ 79 # endif 80 # endif 81 # include <unistd.h> /* declares _POSIX_VERSION */ 82 # if defined(_POSIX_VERSION) /* POSIX compliant */ 83 # define XSUM_PLATFORM_POSIX_VERSION _POSIX_VERSION 84 # else 85 # define XSUM_PLATFORM_POSIX_VERSION 0 86 # endif 87 # endif 88 #endif 89 #if !defined(XSUM_PLATFORM_POSIX_VERSION) 90 # define XSUM_PLATFORM_POSIX_VERSION -1 91 #endif 92 93 #if !defined(S_ISREG) 94 # define S_ISREG(x) (((x) & S_IFMT) == S_IFREG) 95 #endif 96 97 98 /* ************************************ 99 * Windows helpers 100 **************************************/ 101 102 /* 103 * Whether to use the Windows UTF-16 APIs instead of the portable libc 8-bit 104 * ("ANSI") APIs. 105 * 106 * Windows is not UTF-8 clean by default, and the only way to access every file 107 * on the OS is to use UTF-16. 108 * 109 * Do note that xxhsum uses UTF-8 internally and only uses UTF-16 for command 110 * line arguments, console I/O, and opening files. 111 * 112 * Additionally, this guarantees all piped output is UTF-8. 113 */ 114 #if defined(XSUM_WIN32_USE_WCHAR) && !defined(_WIN32) 115 /* We use Windows APIs, only use this on Windows. */ 116 # undef XSUM_WIN32_USE_WCHAR 117 #endif 118 119 #ifndef XSUM_WIN32_USE_WCHAR 120 # if defined(_WIN32) 121 # include <wchar.h> 122 # if WCHAR_MAX == 0xFFFFU /* UTF-16 wchar_t */ 123 # define XSUM_WIN32_USE_WCHAR 1 124 # else 125 # define XSUM_WIN32_USE_WCHAR 0 126 # endif 127 # else 128 # define XSUM_WIN32_USE_WCHAR 0 129 # endif 130 #endif 131 132 #if !XSUM_WIN32_USE_WCHAR 133 /* 134 * It doesn't make sense to have one without the other. 135 * Due to XSUM_WIN32_USE_WCHAR being undef'd, this also handles 136 * non-WIN32 platforms. 137 */ 138 # undef XSUM_WIN32_USE_WMAIN 139 # define XSUM_WIN32_USE_WMAIN 0 140 #else 141 /* 142 * Whether to use wmain() or main(). 143 * 144 * wmain() is preferred because we don't have to mess with internal hidden 145 * APIs. 146 * 147 * It always works on MSVC, but in MinGW, it only works on MinGW-w64 with the 148 * -municode flag. 149 * 150 * Therefore we have to use main() -- there is no better option. 151 */ 152 # ifndef XSUM_WIN32_USE_WMAIN 153 # if defined(_UNICODE) || defined(UNICODE) /* MinGW -municode */ \ 154 || defined(_MSC_VER) /* MSVC */ 155 # define XSUM_WIN32_USE_WMAIN 1 156 # else 157 # define XSUM_WIN32_USE_WMAIN 0 158 # endif 159 # endif 160 /* 161 * It is always good practice to define these to prevent accidental use of the 162 * ANSI APIs, even if the program primarily uses UTF-8. 163 */ 164 # ifndef _UNICODE 165 # define _UNICODE 166 # endif 167 # ifndef UNICODE 168 # define UNICODE 169 # endif 170 #endif /* XSUM_WIN32_USE_WCHAR */ 171 172 #ifndef XSUM_API 173 # ifdef XXH_INLINE_ALL 174 # define XSUM_API static 175 # else 176 # define XSUM_API 177 # endif 178 #endif 179 180 #ifndef XSUM_NO_TESTS 181 # define XSUM_NO_TESTS 0 182 #endif 183 184 /* *************************** 185 * Basic types 186 * ***************************/ 187 188 #if defined(__cplusplus) /* C++ */ \ 189 || (defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) /* C99 */ 190 # include <stdint.h> 191 typedef uint8_t XSUM_U8; 192 typedef uint32_t XSUM_U32; 193 typedef uint64_t XSUM_U64; 194 # else 195 # include <limits.h> 196 typedef unsigned char XSUM_U8; 197 # if UINT_MAX == 0xFFFFFFFFUL 198 typedef unsigned int XSUM_U32; 199 # else 200 typedef unsigned long XSUM_U32; 201 # endif 202 typedef unsigned long long XSUM_U64; 203 #endif /* not C++/C99 */ 204 205 #endif /* XSUM_CONFIG_H */ 206