6 /* Copyright (C) 1995,1996,1997,1998,1999,2000,2001, 2006, 2008 Free Software Foundation, Inc.
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with this library; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
25 #include "libguile/__scm.h"
27 #include "libguile/ports.h"
31 /* struct allocated for each buffered FPORT. */
32 typedef struct scm_t_fport
{
33 int fdes
; /* file descriptor. */
36 SCM_API scm_t_bits scm_tc16_fport
;
38 #define SCM_FSTREAM(x) ((scm_t_fport *) SCM_STREAM (x))
39 #define SCM_FPORT_FDES(x) (SCM_FSTREAM (x)->fdes)
41 #define SCM_FPORTP(x) (!SCM_IMP (x) && (SCM_TYP16 (x) == scm_tc16_fport))
42 #define SCM_OPFPORTP(x) (SCM_FPORTP (x) && (SCM_CELL_WORD_0 (x) & SCM_OPN))
43 #define SCM_OPINFPORTP(x) (SCM_OPFPORTP (x) && (SCM_CELL_WORD_0 (x) & SCM_RDNG))
44 #define SCM_OPOUTFPORTP(x) (SCM_OPFPORTP (x) && (SCM_CELL_WORD_0 (x) & SCM_WRTNG))
46 /* test whether fdes supports random access. */
47 #define SCM_FDES_RANDOM_P(fdes) ((lseek (fdes, 0, SEEK_CUR) == -1) ? 0 : 1)
50 SCM_API SCM
scm_setbuf0 (SCM port
);
51 SCM_API SCM
scm_setvbuf (SCM port
, SCM mode
, SCM size
);
52 SCM_API
void scm_evict_ports (int fd
);
53 SCM_API SCM
scm_open_file (SCM filename
, SCM modes
);
54 SCM_API SCM
scm_fdes_to_port (int fdes
, char *mode
, SCM name
);
55 SCM_API SCM
scm_file_port_p (SCM obj
);
56 SCM_INTERNAL
void scm_init_fports (void);
58 /* internal functions */
60 SCM_INTERNAL SCM
scm_i_fdes_to_port (int fdes
, long mode_bits
, SCM name
);
61 SCM_INTERNAL
int scm_i_fport_truncate (SCM
, SCM
);
62 SCM_INTERNAL SCM
scm_i_fport_seek (SCM
, SCM
, int);
65 #endif /* SCM_FPORTS_H */