1 /* Copyright (C) 2009-2019 Free Software Foundation, Inc. 2 Contributed by Janne Blomqvist 3 4 This file is part of the GNU Fortran runtime library (libgfortran). 5 6 Libgfortran is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 3, or (at your option) 9 any later version. 10 11 Libgfortran is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License for more details. 15 16 Under Section 7 of GPL version 3, you are granted additional 17 permissions described in the GCC Runtime Library Exception, version 18 3.1, as published by the Free Software Foundation. 19 20 You should have received a copy of the GNU General Public License and 21 a copy of the GCC Runtime Library Exception along with this program; 22 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 23 <http://www.gnu.org/licenses/>. */ 24 25 #ifndef GFOR_UNIX_H 26 #define GFOR_UNIX_H 27 28 #include "io.h" 29 30 struct stream_vtable 31 { 32 ssize_t (* const read) (struct stream *, void *, ssize_t); 33 ssize_t (* const write) (struct stream *, const void *, ssize_t); 34 gfc_offset (* const seek) (struct stream *, gfc_offset, int); 35 gfc_offset (* const tell) (struct stream *); 36 gfc_offset (* const size) (struct stream *); 37 /* Avoid keyword truncate due to AIX namespace collision. */ 38 int (* const trunc) (struct stream *, gfc_offset); 39 int (* const flush) (struct stream *); 40 int (* const close) (struct stream *); 41 int (* const markeor) (struct stream *); 42 }; 43 44 struct stream 45 { 46 const struct stream_vtable *vptr; 47 }; 48 49 /* Inline functions for doing file I/O given a stream. */ 50 static inline ssize_t 51 sread (stream *s, void *buf, ssize_t nbyte) 52 { 53 return s->vptr->read (s, buf, nbyte); 54 } 55 56 static inline ssize_t 57 swrite (stream *s, const void *buf, ssize_t nbyte) 58 { 59 return s->vptr->write (s, buf, nbyte); 60 } 61 62 static inline gfc_offset 63 sseek (stream *s, gfc_offset offset, int whence) 64 { 65 return s->vptr->seek (s, offset, whence); 66 } 67 68 static inline gfc_offset 69 stell (stream *s) 70 { 71 return s->vptr->tell (s); 72 } 73 74 static inline gfc_offset 75 ssize (stream *s) 76 { 77 return s->vptr->size (s); 78 } 79 80 static inline int 81 struncate (stream *s, gfc_offset length) 82 { 83 return s->vptr->trunc (s, length); 84 } 85 86 static inline int 87 sflush (stream *s) 88 { 89 return s->vptr->flush (s); 90 } 91 92 static inline int 93 sclose (stream *s) 94 { 95 return s->vptr->close (s); 96 } 97 98 static inline int 99 smarkeor (stream *s) 100 { 101 return s->vptr->markeor (s); 102 } 103 104 105 extern int compare_files (stream *, stream *); 106 internal_proto(compare_files); 107 108 extern stream *open_external (st_parameter_open *, unit_flags *); 109 internal_proto(open_external); 110 111 extern stream *open_internal (char *, size_t, gfc_offset); 112 internal_proto(open_internal); 113 114 extern stream *open_internal4 (char *, size_t, gfc_offset); 115 internal_proto(open_internal4); 116 117 extern char *mem_alloc_w (stream *, size_t *); 118 internal_proto(mem_alloc_w); 119 120 extern char *mem_alloc_r (stream *, size_t *); 121 internal_proto(mem_alloc_r); 122 123 extern gfc_char4_t *mem_alloc_w4 (stream *, size_t *); 124 internal_proto(mem_alloc_w4); 125 126 extern char *mem_alloc_r4 (stream *, size_t *); 127 internal_proto(mem_alloc_r4); 128 129 extern stream *input_stream (void); 130 internal_proto(input_stream); 131 132 extern stream *output_stream (void); 133 internal_proto(output_stream); 134 135 extern stream *error_stream (void); 136 internal_proto(error_stream); 137 138 extern int compare_file_filename (gfc_unit *, const char *, gfc_charlen_type); 139 internal_proto(compare_file_filename); 140 141 extern gfc_unit *find_file (const char *file, gfc_charlen_type file_len); 142 internal_proto(find_file); 143 144 extern int close_share (gfc_unit *); 145 internal_proto(close_share); 146 147 extern int file_exists (const char *file, gfc_charlen_type file_len); 148 internal_proto(file_exists); 149 150 extern GFC_IO_INT file_size (const char *file, gfc_charlen_type file_len); 151 internal_proto(file_size); 152 153 extern const char *inquire_sequential (const char *, gfc_charlen_type); 154 internal_proto(inquire_sequential); 155 156 extern const char *inquire_direct (const char *, gfc_charlen_type); 157 internal_proto(inquire_direct); 158 159 extern const char *inquire_formatted (const char *, gfc_charlen_type); 160 internal_proto(inquire_formatted); 161 162 extern const char *inquire_unformatted (const char *, gfc_charlen_type); 163 internal_proto(inquire_unformatted); 164 165 extern const char *inquire_read (const char *, gfc_charlen_type); 166 internal_proto(inquire_read); 167 168 extern const char *inquire_write (const char *, gfc_charlen_type); 169 internal_proto(inquire_write); 170 171 extern const char *inquire_readwrite (const char *, gfc_charlen_type); 172 internal_proto(inquire_readwrite); 173 174 extern void flush_if_preconnected (stream *); 175 internal_proto(flush_if_preconnected); 176 177 extern int stream_isatty (stream *); 178 internal_proto(stream_isatty); 179 180 #ifndef TTY_NAME_MAX 181 #ifdef _POSIX_TTY_NAME_MAX 182 #define TTY_NAME_MAX _POSIX_TTY_NAME_MAX 183 #else 184 /* sysconf(_SC_TTY_NAME_MAX) = 32 which should be enough. */ 185 #define TTY_NAME_MAX 32 186 #endif 187 #endif 188 189 extern int stream_ttyname (stream *, char *, size_t); 190 internal_proto(stream_ttyname); 191 192 #endif 193