diff options
Diffstat (limited to 'lib/sh/fpurge.c')
| -rw-r--r-- | lib/sh/fpurge.c | 67 |
1 files changed, 46 insertions, 21 deletions
diff --git a/lib/sh/fpurge.c b/lib/sh/fpurge.c index fd093b8..f9e1b9d 100644 --- a/lib/sh/fpurge.c +++ b/lib/sh/fpurge.c @@ -31,7 +31,7 @@ #endif extern int fpurge __P((FILE *stream)); -#if HAVE___FPURGE /* glibc >= 2.2, Solaris >= 7 */ +#if HAVE___FPURGE /* glibc >= 2.2, Haiku, Solaris >= 7 */ # include <stdio_ext.h> #endif #include <stdlib.h> @@ -39,13 +39,13 @@ extern int fpurge __P((FILE *stream)); int fpurge (FILE *fp) { -#if HAVE___FPURGE /* glibc >= 2.2, Solaris >= 7 */ +#if HAVE___FPURGE /* glibc >= 2.2, Haiku, Solaris >= 7 */ __fpurge (fp); /* The __fpurge function does not have a return value. */ return 0; -#elif HAVE_FPURGE /* FreeBSD, NetBSD, OpenBSD, MacOS X */ +#elif HAVE_FPURGE /* FreeBSD, NetBSD, OpenBSD, DragonFly, MacOS X */ /* Call the system's fpurge function. */ # undef fpurge @@ -53,7 +53,7 @@ fpurge (FILE *fp) extern int fpurge (FILE *); # endif int result = fpurge (fp); -# if defined __sferror /* FreeBSD, NetBSD, OpenBSD, MacOS X, Cygwin */ +# if defined __sferror || defined __DragonFly__ /* FreeBSD, NetBSD, OpenBSD, DragonFly, MacOS X, Cygwin */ if (result == 0) /* Correct the invariants that fpurge broke. <stdio.h> on BSD systems says: @@ -71,7 +71,7 @@ fpurge (FILE *fp) /* Most systems provide FILE as a struct and the necessary bitmask in <stdio.h>, because they need it for implementing getc() and putc() as fast macros. */ -# if defined _IO_ferror_unlocked /* GNU libc, BeOS */ +# if defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */ fp->_IO_read_end = fp->_IO_read_ptr; fp->_IO_write_ptr = fp->_IO_write_base; /* Avoid memory leak when there is an active ungetc buffer. */ @@ -81,28 +81,27 @@ fpurge (FILE *fp) fp->_IO_save_base = NULL; } return 0; -# elif defined __sferror /* FreeBSD, NetBSD, OpenBSD, MacOS X, Cygwin */ - fp->_p = fp->_bf._base; - fp->_r = 0; - fp->_w = ((fp->_flags & (__SLBF | __SNBF | __SRD)) == 0 /* fully buffered and not currently reading? */ - ? fp->_bf._size - : 0); +# elif defined __sferror || defined __DragonFly__ /* FreeBSD, NetBSD, OpenBSD, DragonFly, MacOS X, Cygwin */ + fp_->_p = fp_->_bf._base; + fp_->_r = 0; + fp_->_w = ((fp_->_flags & (__SLBF | __SNBF | __SRD)) == 0 /* fully buffered and not currently reading? */ + ? fp_->_bf._size + : 0); /* Avoid memory leak when there is an active ungetc buffer. */ -# if defined __NetBSD__ || defined __OpenBSD__ /* NetBSD, OpenBSD */ - /* See <http://cvsweb.netbsd.org/bsdweb.cgi/src/lib/libc/stdio/fileext.h?rev=HEAD&content-type=text/x-cvsweb-markup> - and <http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/stdio/fileext.h?rev=HEAD&content-type=text/x-cvsweb-markup> */ -# define fp_ub ((struct { struct __sbuf _ub; } *) fp->_ext._base)->_ub -# else /* FreeBSD, MacOS X, Cygwin */ -# define fp_ub fp->_ub -# endif if (fp_ub._base != NULL) { - if (fp_ub._base != fp->_ubuf) + if (fp_ub._base != fp_->_ubuf) free (fp_ub._base); fp_ub._base = NULL; } return 0; -# elif defined _IOERR /* AIX, HP-UX, IRIX, OSF/1, Solaris, mingw */ +# elif defined __EMX__ /* emx+gcc */ + fp->_ptr = fp->_buffer; + fp->_rcount = 0; + fp->_wcount = 0; + fp->_ungetc_count = 0; + return 0; +# elif defined _IOERR /* AIX, HP-UX, IRIX, OSF/1, Solaris, OpenServer, mingw */ fp->_ptr = fp->_base; if (fp->_ptr != NULL) fp->_cnt = 0; @@ -115,8 +114,34 @@ fpurge (FILE *fp) fp->__bufpos = fp->__bufread; # endif return 0; +# elif defined __QNX__ /* QNX */ + fp->_Rback = fp->_Back + sizeof (fp->_Back); + fp->_Rsave = NULL; + if (fp->_Mode & 0x2000 /* _MWRITE */) + /* fp->_Buf <= fp->_Next <= fp->_Wend */ + fp->_Next = fp->_Buf; + else + /* fp->_Buf <= fp->_Next <= fp->_Rend */ + fp->_Rend = fp->_Next; + return 0; +# elif defined __MINT__ /* Atari FreeMiNT */ + if (fp->__pushed_back) + { + fp->__bufp = fp->__pushback_bufp; + fp->__pushed_back = 0; + } + /* Preserve the current file position. */ + if (fp->__target != -1) + fp->__target += fp->__bufp - fp->__buffer; + fp->__bufp = fp->__buffer; + /* Nothing in the buffer, next getc is nontrivial. */ + fp->__get_limit = fp->__bufp; + /* Nothing in the buffer, next putc is nontrivial. */ + fp->__put_limit = fp->__buffer; + return 0; # else - #error "Please port gnulib fpurge.c to your platform! Look at the definitions of fflush, setvbuf and ungetc on your system, then report this to bug-gnulib." +# warning "Please port gnulib fpurge.c to your platform! Look at the definitions of fflush, setvbuf and ungetc on your system, then report this to bug-gnulib." + return 0; # endif #endif |