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author | Richard Maw <richard.maw@codethink.co.uk> | 2012-01-17 14:43:55 +0000 |
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committer | Richard Maw <richard.maw@codethink.co.uk> | 2012-01-17 14:43:55 +0000 |
commit | 2de9abc5c9d40b3c716307d67d16146f823fd554 (patch) | |
tree | 6979db67934ddc8b564150b465846a383b428ff8 /gnulib/lib/freadptr.c | |
parent | 33cc1c6fda6e72a7bae1401e9b2cec495a4d3ff1 (diff) | |
download | patch-baserock/bootstrap.tar.gz |
add the output of bootstrapbaserock/bootstrap-pass2baserock/bootstrap
Diffstat (limited to 'gnulib/lib/freadptr.c')
m--------- | gnulib | 0 | ||||
-rw-r--r-- | gnulib/lib/freadptr.c | 111 |
2 files changed, 111 insertions, 0 deletions
diff --git a/gnulib b/gnulib deleted file mode 160000 -Subproject 443bc5ffcf7429e557f4a371b0661abe98ddbc1 diff --git a/gnulib/lib/freadptr.c b/gnulib/lib/freadptr.c new file mode 100644 index 0000000..afd7a3e --- /dev/null +++ b/gnulib/lib/freadptr.c @@ -0,0 +1,111 @@ +/* Retrieve information about a FILE stream. + Copyright (C) 2007-2011 Free Software Foundation, Inc. + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. */ + +#include <config.h> + +/* Specification. */ +#include "freadptr.h" + +#include <stdlib.h> + +#include "stdio-impl.h" + +const char * +freadptr (FILE *fp, size_t *sizep) +{ + size_t size; + + /* Keep this code in sync with freadahead! */ +#if defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */ + if (fp->_IO_write_ptr > fp->_IO_write_base) + return NULL; + size = fp->_IO_read_end - fp->_IO_read_ptr; + if (size == 0) + return NULL; + *sizep = size; + return (const char *) fp->_IO_read_ptr; +#elif defined __sferror || defined __DragonFly__ /* FreeBSD, NetBSD, OpenBSD, DragonFly, MacOS X, Cygwin */ + if ((fp_->_flags & __SWR) != 0 || fp_->_r < 0) + return NULL; + size = fp_->_r; + if (size == 0) + return NULL; + *sizep = size; + return (const char *) fp_->_p; +#elif defined __EMX__ /* emx+gcc */ + if ((fp->_flags & _IOWRT) != 0) + return NULL; + /* Note: fp->_ungetc_count > 0 implies fp->_rcount <= 0, + fp->_ungetc_count = 0 implies fp->_rcount >= 0. */ + if (fp->_rcount <= 0) + return NULL; + if (!(fp->_ungetc_count == 0)) + abort (); + *sizep = fp->_rcount; + return fp->_ptr; +#elif defined __minix /* Minix */ + if ((fp_->_flags & _IOWRITING) != 0) + return NULL; + size = fp_->_count; + if (size == 0) + return NULL; + *sizep = size; + return (const char *) fp_->_ptr; +#elif defined _IOERR /* AIX, HP-UX, IRIX, OSF/1, Solaris, OpenServer, mingw, NonStop Kernel */ + if ((fp_->_flag & _IOWRT) != 0) + return NULL; + size = fp_->_cnt; + if (size == 0) + return NULL; + *sizep = size; + return (const char *) fp_->_ptr; +#elif defined __UCLIBC__ /* uClibc */ +# ifdef __STDIO_BUFFERS + if (fp->__modeflags & __FLAG_WRITING) + return NULL; + size = fp->__bufread - fp->__bufpos; + if (size == 0) + return NULL; + *sizep = size; + return (const char *) fp->__bufpos; +# else + return NULL; +# endif +#elif defined __QNX__ /* QNX */ + if ((fp->_Mode & 0x2000 /* _MWRITE */) != 0) + return NULL; + /* fp->_Buf <= fp->_Next <= fp->_Rend */ + size = fp->_Rend - fp->_Next; + if (size == 0) + return NULL; + *sizep = size; + return (const char *) fp->_Next; +#elif defined __MINT__ /* Atari FreeMiNT */ + if (!fp->__mode.__read) + return NULL; + size = fp->__get_limit - fp->__bufp; + if (size == 0) + return NULL; + *sizep = size; + return fp->__bufp; +#elif defined SLOW_BUT_NO_HACKS /* users can define this */ + /* This implementation is correct on any ANSI C platform. It is just + awfully slow. */ + return NULL; +#else + #error "Please port gnulib freadptr.c to your platform! Look at the definition of fflush, fread, getc, getc_unlocked on your system, then report this to bug-gnulib." +#endif +} |