| // checking the contents of <unistd.h> |
| |
| /*************************************************************************** |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed |
| * with this work for additional information regarding copyright |
| * ownership. The ASF licenses this file to you under the Apache |
| * License, Version 2.0 (the License); you may not use this file |
| * except in compliance with the License. You may obtain a copy of |
| * the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or |
| * implied. See the License for the specific language governing |
| * permissions and limitations under the License. |
| * |
| * Copyright 1999-2007 Rogue Wave Software, Inc. |
| * |
| **************************************************************************/ |
| |
| #include "config.h" |
| |
| #include <sys/types.h> |
| #include <fcntl.h> |
| #include <stdio.h> |
| |
| #if (defined (_WIN32) || defined (_WIN64)) && !defined (__CYGWIN__) |
| # include <io.h> |
| #else |
| # include <unistd.h> |
| #endif // _WIN32 || _WIN64 |
| |
| // Windows defines the equivalent SSIZE_T in the platform SDK |
| // as the signed equivalent of size_t which is defined as long |
| // on WIN32 and long long/__int64 on WIN64 |
| #if defined (_WIN64) |
| # define ssize_t __int64 |
| #elif defined (_WIN32) |
| # define ssize_t long |
| #endif |
| |
| #if !defined (STDIN_FILENO) |
| # define STDIN_FILENO 0 |
| # define STDOUT_FILENO 1 |
| # define STDERR_FILENO 2 |
| #endif // STDIN_FILENO |
| |
| |
| static void print_macros () |
| { |
| struct { |
| int value; |
| const char *name; |
| } macros[] = { |
| |
| #define MACRO(name) { name, #name } |
| MACRO (STDIN_FILENO), |
| MACRO (STDOUT_FILENO), |
| MACRO (STDERR_FILENO), |
| |
| // open(2) oflag constants |
| MACRO (O_RDONLY), |
| MACRO (O_WRONLY), |
| MACRO (O_RDWR), |
| |
| #if defined (O_ACCMODE) |
| // fcntl(2) file access mask |
| MACRO (O_ACCMODE), |
| #endif // O_ACCMODE |
| |
| MACRO (O_APPEND), |
| MACRO (O_EXCL), |
| MACRO (O_CREAT), |
| MACRO (O_TRUNC), |
| |
| // lseek(2) whence constants |
| MACRO (SEEK_SET), |
| MACRO (SEEK_CUR), |
| MACRO (SEEK_END) |
| |
| #if defined (F_GETFL) |
| // fcntl(2) cmd argument |
| , MACRO (F_GETFL) |
| #endif // F_GETFL |
| }; |
| |
| for (unsigned i = 0; i != sizeof macros / sizeof *macros; ++i) |
| printf ("#define _RWSTD_%-20s %#8x // %s\n", |
| macros [i].name, macros [i].value, macros [i].name); |
| } |
| |
| // POSIX: off_t is a signed integral type |
| const char* off_t_name (short) { return "short"; } |
| const char* off_t_name (int) { return "int"; } |
| const char* off_t_name (long) { return "long"; } |
| |
| // POSIX: ssize_t is a signed integral type |
| const char* ssize_t_name (short) { return "short"; } |
| const char* ssize_t_name (unsigned short) { return "unsigned short"; } |
| const char* ssize_t_name (int) { return "int"; } |
| const char* ssize_t_name (unsigned int) { return "unsigned int"; } |
| const char* ssize_t_name (long) { return "long"; } |
| const char* ssize_t_name (unsigned long) { return "unsigned long"; } |
| |
| #ifndef _RWSTD_NO_LONG_LONG |
| # define LONG_LONG long long |
| #elif defined (_WIN32) || defined (_WIN64) |
| # define LONG_LONG __int64 |
| #endif // _RWSTD_NO_LONG_LONG, _WIN{32,64} |
| |
| |
| #if defined (LONG_LONG) |
| |
| # define STRSTR(x) #x |
| # define STR(x) STRSTR (x) |
| |
| const char* off_t_name (LONG_LONG) |
| { |
| return STR (LONG_LONG); |
| } |
| |
| const char* ssize_t_name (LONG_LONG) |
| { |
| return STR (LONG_LONG); |
| } |
| |
| const char* ssize_t_name (unsigned LONG_LONG) |
| { |
| return STR (unsigned LONG_LONG); |
| } |
| |
| #endif // LONG_LONG |
| |
| |
| int main () |
| { |
| print_macros (); |
| |
| off_t off = 0; |
| printf ("#define _RWSTD_OFF_T %s // off_t\n", off_t_name (off)); |
| |
| ssize_t s = 0; |
| printf ("#define _RWSTD_SSIZE_T %s // ssize_t\n", ssize_t_name (s)); |
| |
| return 0; |
| } |