diff options
Diffstat (limited to 'libio/oldfileops.c')
| -rw-r--r-- | libio/oldfileops.c | 45 |
1 files changed, 36 insertions, 9 deletions
diff --git a/libio/oldfileops.c b/libio/oldfileops.c index 5f583b962d..fe29a7965b 100644 --- a/libio/oldfileops.c +++ b/libio/oldfileops.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1993, 1995, 1997, 1998 Free Software Foundation, Inc. +/* Copyright (C) 1993, 1995, 1997, 1998, 1999 Free Software Foundation, Inc. This file is part of the GNU IO Library. Written by Per Bothner <bothner@cygnus.com>. @@ -39,6 +39,9 @@ #include <sys/stat.h> #include <string.h> #include <errno.h> +#ifdef __STDC__ +#include <stdlib.h> +#endif #ifndef errno extern int errno; #endif @@ -318,7 +321,15 @@ _IO_old_file_underflow (fp) return *(unsigned char *) fp->_IO_read_ptr; if (fp->_IO_buf_base == NULL) - _IO_doallocbuf (fp); + { + /* Maybe we already have a push back pointer. */ + if (fp->_IO_save_base != NULL) + { + free (fp->_IO_save_base); + fp->_flags &= ~_IO_IN_BACKUP; + } + _IO_doallocbuf (fp); + } /* Flush all line buffered files before reading. */ /* FIXME This can/should be moved to genops ?? */ @@ -408,11 +419,9 @@ int _IO_old_file_sync (fp) _IO_FILE *fp; { - _IO_size_t delta; + _IO_ssize_t delta; int retval = 0; - _IO_cleanup_region_start ((void (*) __P ((void *))) _IO_funlockfile, fp); - _IO_flockfile (fp); /* char* ptr = cur_ptr(); */ if (fp->_IO_write_ptr > fp->_IO_write_base) if (_IO_old_do_flush(fp)) return EOF; @@ -437,8 +446,6 @@ _IO_old_file_sync (fp) fp->_old_offset = _IO_pos_BAD; /* FIXME: Cleanup - can this be shared? */ /* setg(base(), ptr, ptr); */ - _IO_funlockfile (fp); - _IO_cleanup_region_end (0); return retval; } @@ -474,6 +481,12 @@ _IO_old_file_seekoff (fp, offset, dir, mode) if (fp->_IO_buf_base == NULL) { + /* It could be that we already have a pushback buffer. */ + if (fp->_IO_read_base != NULL) + { + free (fp->_IO_read_base); + fp->_flags &= ~_IO_IN_BACKUP; + } _IO_doallocbuf (fp); _IO_setp (fp, fp->_IO_buf_base, fp->_IO_buf_base); _IO_setg (fp, fp->_IO_buf_base, fp->_IO_buf_base, fp->_IO_buf_base); @@ -507,6 +520,10 @@ _IO_old_file_seekoff (fp, offset, dir, mode) } /* At this point, dir==_IO_seek_set. */ + /* If we are only interested in the current position we've found it now. */ + if (mode == 0) + return offset; + /* If destination is within current buffer, optimize: */ if (fp->_old_offset != _IO_pos_BAD && fp->_IO_read_base != NULL && !_IO_in_backup (fp)) @@ -525,7 +542,10 @@ _IO_old_file_seekoff (fp, offset, dir, mode) _IO_setg (fp, fp->_IO_buf_base, fp->_IO_buf_base + rel_offset, fp->_IO_read_end); _IO_setp (fp, fp->_IO_buf_base, fp->_IO_buf_base); - goto resync; + { + _IO_mask_flags (fp, 0, _IO_EOF_SEEN); + goto resync; + } } #ifdef TODO /* If we have streammarkers, seek forward by reading ahead. */ @@ -535,6 +555,7 @@ _IO_old_file_seekoff (fp, offset, dir, mode) - (fp->_IO_read_ptr - fp->_IO_read_base); if (ignore (to_skip) != to_skip) goto dumb; + _IO_mask_flags (fp, 0, _IO_EOF_SEEN); goto resync; } #endif @@ -545,6 +566,7 @@ _IO_old_file_seekoff (fp, offset, dir, mode) if (!_IO_in_backup (fp)) _IO_switch_to_backup_area (fp); gbump (fp->_IO_read_end + rel_offset - fp->_IO_read_ptr); + _IO_mask_flags (fp, 0, _IO_EOF_SEEN); goto resync; } #endif @@ -680,7 +702,12 @@ _IO_old_file_xsputn (f, data, n) count = to_do; if (count > 20) { +#ifdef _LIBC + f->_IO_write_ptr = __mempcpy (f->_IO_write_ptr, s, count); +#else memcpy (f->_IO_write_ptr, s, count); + f->_IO_write_ptr += count; +#endif s += count; } else @@ -689,8 +716,8 @@ _IO_old_file_xsputn (f, data, n) register int i = (int) count; while (--i >= 0) *p++ = *s++; + f->_IO_write_ptr = p; } - f->_IO_write_ptr += count; to_do -= count; } if (to_do + must_flush > 0) |