%% options copyright owner = Dirk Krause copyright year = 2015-xxxx SPDX-License-Identifier: BSD-3-Clause %% header /** @file Check whether a file pointer is connected to a terminal. CRT on Windows: Required. */ #ifndef DK4CONF_H_INCLUDED #if DK4_BUILDING_DKTOOLS4 #include "dk4conf.h" #else #include #endif #endif #ifndef DK4TYPES_H_INCLUDED #if DK4_BUILDING_DKTOOLS4 #include "dk4types.h" #else #include #endif #endif #ifndef DK4ERROR_H_INCLUDED #if DK4_BUILDING_DKTOOLS4 #include "dk4error.h" #else #include #endif #endif #ifndef STDIO_H_INCLUDED #include #define STDIO_H_INCLUDED 1 #endif #ifdef __cplusplus extern "C" { #endif /** Check whether the file descriptor is connected to a tty (terminal, printer, serial line). @param fd File descriptor to check. @param erp Error report, may be NULL. @return 1 for tty, 0 for other file descriptor, -1 on error. Error codes: - DK4_E_NOT_SUPPORTED
if not isatty() or _isatty() function available on the system. */ int dk4istty(int fd, dk4_er_t *erp); /** Check whether a FILE pointer is connected to a tty (terminal, printer, serial line). @param fipo FILE to check. @param erp Error report, may be NULL. @return 1 for tty, 0 for other file descriptor, -1 on error. */ int dk4istty_file(FILE *fipo, dk4_er_t *erp); #ifdef __cplusplus } #endif %% module #include "dk4conf.h" #include "dk4istty.h" #if DK4_HAVE_UNISTD_H #ifndef UNISTD_H_INCLUDED #include #define UNISTD_H_INCLUDED 1 #endif #endif #if DK4_HAVE_IO_H #ifndef IO_H_INCLUDED #include #define IO_H_INCLUDED 1 #endif #endif #if DK4_HAVE_ASSERT_H #ifndef ASSERT_H_INCLUDED #include #define ASSERT_H_INCLUDED 1 #endif #endif #include "dk4unused.h" $!trace-include int dk4istty( #if (DK4_HAVE_ISATTY) || (DK4_HAVE__ISATTY) int fd, dk4_er_t * DK4_ARG_UNUSED(erp) #else int fd, dk4_er_t *erp #endif ) { int back = -1; #if DK4_HAVE_ISATTY DK4_UNUSED_ARG(erp) if ( 0 != isatty(fd) ) { back = 1; } else { back = 0; } #else #if DK4_HAVE__ISATTY DK4_UNUSED_ARG(erp) if ( 0 != _isatty(fd) ) { back = 1; } else { back = 0; } #else dk4error_set_simple_error_code(erp, DK4_E_NOT_SUPPORTED); #endif #endif return back; } int dk4istty_file(FILE *fipo, dk4_er_t *erp) { int back = -1; #if DK4_USE_ASSERT assert(NULL != fipo); #endif if (NULL != fipo) { #if DK4_HAVE_FILENO back = dk4istty(fileno(fipo), erp); #else #if DK4_HAVE__FILENO back = dk4istty(_fileno(fipo), erp); #else dk4error_set_simple_error_code(erp, DK4_E_NOT_SUPPORTED); #endif #endif } else { dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS); } return back; }