Mercurial > hg > octave-nkf > gnulib-hg
annotate lib/ftello.c @ 8868:90e71310a07f
Fix fseeko/ftello on cygwin 1.5.24.
* doc/functions/fseeko.texi (fseeko): Document the fix.
* doc/functions/ftello.texi (ftello): Document the fix.
* doc/functions/stdin.texi (stdin): Document the cygwin bug.
* doc/functions/stdout.text (stdout): New file.
* doc/functions/stderr.text (stderr): New file.
* doc/gnulib.texi (Function Substitutes): Use new files.
* tests/test-fseeko.c (main): Check for broken fseeko on cygwin
prior to 1.7.0.
* tests/test-ftello.c (main): Likewise for ftello.
* tests/test-fseeko.sh: New file.
* tests/test-ftello.sh: New file.
* modules/fseeko-tests (Makefile.am): Ensure test-fseeko is run
with seekable stdin.
* modules/ftello-tests (Makefile.am): Likewise for test-ftello.
* m4/fseeko.m4 (gl_FUNC_FSEEKO): Detect the cygwin bug.
(gl_REPLACE_FSEEKO): New macro.
* m4/ftello.m4 (gl_FUNC_FTELLO, gl_REPLACE_FTELLO): Likewise.
* modules/fseeko (Files): Distribute fseeko.c.
* modules/ftello (Files): Distribute ftello.c.
* lib/fseeko.c (rpl_fseeko) [__CYGWIN__]: Convert stdin to 64-bit
mode.
* lib/ftello.c (rpl_ftello): New file.
* m4/stdio_h.m4 (gl_STDIO_H_DEFAULTS): Allow replacement of
fseeko, ftello.
(gl_STDIN_LARGE_OFFSET): New macro.
* modules/stdio (Makefile.am): Perform the replacement.
* lib/stdio_.h (rpl_fseeko, rpl_ftello): Define when needed.
| author | Eric Blake <ebb9@byu.net> |
|---|---|
| date | Thu, 24 May 2007 03:53:37 +0000 |
| parents | |
| children | dfee3b4fd46c |
| rev | line source |
|---|---|
| 8868 | 1 /* An ftello() function that works around platform bugs. |
| 2 Copyright (C) 2007 Free Software Foundation, Inc. | |
| 3 | |
| 4 This program is free software; you can redistribute it and/or modify | |
| 5 it under the terms of the GNU General Public License as published by | |
| 6 the Free Software Foundation; either version 2, or (at your option) | |
| 7 any later version. | |
| 8 | |
| 9 This program is distributed in the hope that it will be useful, | |
| 10 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 12 GNU General Public License for more details. | |
| 13 | |
| 14 You should have received a copy of the GNU General Public License along | |
| 15 with this program; if not, write to the Free Software Foundation, | |
| 16 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ | |
| 17 | |
| 18 #include <config.h> | |
| 19 | |
| 20 /* Specification. */ | |
| 21 #include <stdio.h> | |
| 22 | |
| 23 #undef ftello | |
| 24 #if !HAVE_FTELLO | |
| 25 # define ftello ftell | |
| 26 #endif | |
| 27 | |
| 28 off_t | |
| 29 rpl_ftello (FILE *fp) | |
| 30 { | |
| 31 #if defined __SL64 && defined __SCLE /* Cygwin */ | |
| 32 if ((fp->_flags & __SL64) == 0) | |
| 33 { | |
| 34 /* Cygwin 1.5.0 through 1.5.24 failed to open stdin in 64-bit | |
| 35 mode; but has an ftello that requires 64-bit mode. */ | |
| 36 FILE *tmp = fopen ("/dev/null", "r"); | |
| 37 if (!tmp) | |
| 38 return -1; | |
| 39 fp->_flags |= __SL64; | |
| 40 fp->_seek64 = tmp->_seek64; | |
| 41 fclose (tmp); | |
| 42 } | |
| 43 #endif | |
| 44 return ftello (fp); | |
| 45 } |