1 /* Copyright (C) 1995,1996,1997,1998,1999,2000,2001, 2002, 2003, 2004, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
3 * This library is free software; you can redistribute it and/or
4 * modify it under the terms of the GNU Lesser General Public License
5 * as published by the Free Software Foundation; either version 3 of
6 * the License, or (at your option) any later version.
8 * This library is distributed in the hope that it will be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * Lesser General Public License for more details.
13 * You should have received a copy of the GNU Lesser General Public
14 * License along with this library; if not, write to the Free Software
15 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
21 #define _LARGEFILE64_SOURCE /* ask for stat64 etc */
29 #include "libguile/_scm.h"
30 #include "libguile/strings.h"
31 #include "libguile/validate.h"
32 #include "libguile/gc.h"
33 #include "libguile/posix.h"
34 #include "libguile/dynwind.h"
35 #include "libguile/hashtab.h"
37 #include "libguile/fports.h"
48 #ifdef HAVE_STRUCT_STAT_ST_BLKSIZE
53 #include <sys/types.h>
55 #include "libguile/iselect.h"
57 /* Some defines for Windows (native port, not Cygwin). */
59 # include <sys/stat.h>
60 # include <winsock2.h>
61 #endif /* __MINGW32__ */
63 #include <full-write.h>
65 /* Mingw (version 3.4.5, circa 2006) has ftruncate as an alias for chsize
66 already, but have this code here in case that wasn't so in past versions,
67 or perhaps to help other minimal DOS environments.
69 gnulib ftruncate.c has code using fcntl F_CHSIZE and F_FREESP, which
70 might be possibilities if we've got other systems without ftruncate. */
72 #if defined HAVE_CHSIZE && ! defined HAVE_FTRUNCATE
73 # define ftruncate(fd, size) chsize (fd, size)
74 # undef HAVE_FTRUNCATE
75 # define HAVE_FTRUNCATE 1
78 #if SIZEOF_OFF_T == SIZEOF_INT
79 #define OFF_T_MAX INT_MAX
80 #define OFF_T_MIN INT_MIN
81 #elif SIZEOF_OFF_T == SIZEOF_LONG
82 #define OFF_T_MAX LONG_MAX
83 #define OFF_T_MIN LONG_MIN
84 #elif SIZEOF_OFF_T == SIZEOF_LONG_LONG
85 #define OFF_T_MAX LONG_LONG_MAX
86 #define OFF_T_MIN LONG_LONG_MIN
88 #error Oops, unknown OFF_T size
91 scm_t_bits scm_tc16_fport
;
94 /* default buffer size, used if the O/S won't supply a value. */
95 static const size_t default_buffer_size
= 1024;
97 /* create FPORT buffer with specified sizes (or -1 to use default size or
100 scm_fport_buffer_add (SCM port
, long read_size
, int write_size
)
101 #define FUNC_NAME "scm_fport_buffer_add"
103 scm_t_port
*pt
= SCM_PTAB_ENTRY (port
);
105 if (read_size
== -1 || write_size
== -1)
108 #ifdef HAVE_STRUCT_STAT_ST_BLKSIZE
110 scm_t_fport
*fp
= SCM_FSTREAM (port
);
112 default_size
= (fstat (fp
->fdes
, &st
) == -1) ? default_buffer_size
115 default_size
= default_buffer_size
;
118 read_size
= default_size
;
119 if (write_size
== -1)
120 write_size
= default_size
;
123 if (SCM_INPUT_PORT_P (port
) && read_size
> 0)
125 pt
->read_buf
= scm_gc_malloc_pointerless (read_size
, "port buffer");
126 pt
->read_pos
= pt
->read_end
= pt
->read_buf
;
127 pt
->read_buf_size
= read_size
;
131 pt
->read_pos
= pt
->read_buf
= pt
->read_end
= &pt
->shortbuf
;
132 pt
->read_buf_size
= 1;
135 if (SCM_OUTPUT_PORT_P (port
) && write_size
> 0)
137 pt
->write_buf
= scm_gc_malloc_pointerless (write_size
, "port buffer");
138 pt
->write_pos
= pt
->write_buf
;
139 pt
->write_buf_size
= write_size
;
143 pt
->write_buf
= pt
->write_pos
= &pt
->shortbuf
;
144 pt
->write_buf_size
= 1;
147 pt
->write_end
= pt
->write_buf
+ pt
->write_buf_size
;
148 if (read_size
> 0 || write_size
> 0)
149 SCM_SET_CELL_WORD_0 (port
, SCM_CELL_WORD_0 (port
) & ~SCM_BUF0
);
151 SCM_SET_CELL_WORD_0 (port
, SCM_CELL_WORD_0 (port
) | SCM_BUF0
);
155 SCM_DEFINE (scm_setvbuf
, "setvbuf", 2, 1, 0,
156 (SCM port
, SCM mode
, SCM size
),
157 "Set the buffering mode for @var{port}. @var{mode} can be:\n"
164 "block buffered, using a newly allocated buffer of @var{size} bytes.\n"
165 "If @var{size} is omitted, a default size will be used.\n"
167 #define FUNC_NAME s_scm_setvbuf
173 port
= SCM_COERCE_OUTPORT (port
);
175 SCM_VALIDATE_OPFPORT (1,port
);
176 cmode
= scm_to_int (mode
);
177 if (cmode
!= _IONBF
&& cmode
!= _IOFBF
&& cmode
!= _IOLBF
)
178 scm_out_of_range (FUNC_NAME
, mode
);
182 SCM_SET_CELL_WORD_0 (port
, SCM_CELL_WORD_0 (port
) | SCM_BUFLINE
);
187 SCM_SET_CELL_WORD_0 (port
, SCM_CELL_WORD_0 (port
) & ~(scm_t_bits
)SCM_BUFLINE
);
190 if (SCM_UNBNDP (size
))
199 csize
= scm_to_int (size
);
200 if (csize
< 0 || (cmode
== _IONBF
&& csize
> 0))
201 scm_out_of_range (FUNC_NAME
, size
);
204 pt
= SCM_PTAB_ENTRY (port
);
206 /* silently discards buffered and put-back chars. */
207 if (pt
->read_buf
== pt
->putback_buf
)
209 pt
->read_buf
= pt
->saved_read_buf
;
210 pt
->read_pos
= pt
->saved_read_pos
;
211 pt
->read_end
= pt
->saved_read_end
;
212 pt
->read_buf_size
= pt
->saved_read_buf_size
;
214 if (pt
->read_buf
!= &pt
->shortbuf
)
215 scm_gc_free (pt
->read_buf
, pt
->read_buf_size
, "port buffer");
216 if (pt
->write_buf
!= &pt
->shortbuf
)
217 scm_gc_free (pt
->write_buf
, pt
->write_buf_size
, "port buffer");
219 scm_fport_buffer_add (port
, csize
, csize
);
220 return SCM_UNSPECIFIED
;
224 /* Move ports with the specified file descriptor to new descriptors,
225 * resetting the revealed count to 0.
228 scm_i_evict_port (void *closure
, SCM port
)
230 int fd
= * (int*) closure
;
232 if (SCM_FPORTP (port
))
237 /* XXX: In some cases, we can encounter a port with no associated ptab
239 p
= SCM_PTAB_ENTRY (port
);
240 fp
= (p
!= NULL
) ? (scm_t_fport
*) p
->stream
: NULL
;
242 if ((fp
!= NULL
) && (fp
->fdes
== fd
))
246 scm_syserror ("scm_evict_ports");
247 scm_set_port_revealed_x (port
, scm_from_int (0));
253 scm_evict_ports (int fd
)
255 scm_c_port_for_each (scm_i_evict_port
, (void *) &fd
);
259 SCM_DEFINE (scm_file_port_p
, "file-port?", 1, 0, 0,
261 "Determine whether @var{obj} is a port that is related to a file.")
262 #define FUNC_NAME s_scm_file_port_p
264 return scm_from_bool (SCM_FPORTP (obj
));
269 static SCM
* loc_file_port_name_canonicalization
;
270 SCM_SYMBOL (sym_relative
, "relative");
271 SCM_SYMBOL (sym_absolute
, "absolute");
274 fport_canonicalize_filename (SCM filename
)
276 if (!scm_is_string (filename
))
280 else if (scm_is_eq (*loc_file_port_name_canonicalization
, sym_relative
))
283 SCM scanon
, load_path
;
285 str
= scm_to_locale_string (filename
);
286 canon
= canonicalize_file_name (str
);
292 scanon
= scm_take_locale_string (canon
);
294 for (load_path
= scm_variable_ref
295 (scm_c_module_lookup (scm_the_root_module (), "%load-path"));
296 scm_is_pair (load_path
);
297 load_path
= scm_cdr (load_path
))
298 if (scm_is_true (scm_string_prefix_p (scm_car (load_path
),
300 SCM_UNDEFINED
, SCM_UNDEFINED
,
301 SCM_UNDEFINED
, SCM_UNDEFINED
)))
302 return scm_substring (scanon
,
303 scm_string_length (scm_car (load_path
)),
307 else if (scm_is_eq (*loc_file_port_name_canonicalization
, sym_absolute
))
311 str
= scm_to_locale_string (filename
);
312 canon
= canonicalize_file_name (str
);
315 return canon
? scm_take_locale_string (canon
) : filename
;
325 * Return a new port open on a given file.
327 * The mode string must match the pattern: [rwa+]** which
328 * is interpreted in the usual unix way.
330 * Return the new port.
332 SCM_DEFINE (scm_open_file
, "open-file", 2, 0, 0,
333 (SCM filename
, SCM mode
),
334 "Open the file whose name is @var{filename}, and return a port\n"
335 "representing that file. The attributes of the port are\n"
336 "determined by the @var{mode} string. The way in which this is\n"
337 "interpreted is similar to C stdio. The first character must be\n"
338 "one of the following:\n"
341 "Open an existing file for input.\n"
343 "Open a file for output, creating it if it doesn't already exist\n"
344 "or removing its contents if it does.\n"
346 "Open a file for output, creating it if it doesn't already\n"
347 "exist. All writes to the port will go to the end of the file.\n"
348 "The \"append mode\" can be turned off while the port is in use\n"
349 "@pxref{Ports and File Descriptors, fcntl}\n"
351 "The following additional characters can be appended:\n"
354 "Open the underlying file in binary mode, if supported by the operating system. "
356 "Open the port for both input and output. E.g., @code{r+}: open\n"
357 "an existing file for both input and output.\n"
359 "Create an \"unbuffered\" port. In this case input and output\n"
360 "operations are passed directly to the underlying port\n"
361 "implementation without additional buffering. This is likely to\n"
362 "slow down I/O operations. The buffering mode can be changed\n"
363 "while a port is in use @pxref{Ports and File Descriptors,\n"
366 "Add line-buffering to the port. The port output buffer will be\n"
367 "automatically flushed whenever a newline character is written.\n"
369 "In theory we could create read/write ports which were buffered\n"
370 "in one direction only. However this isn't included in the\n"
371 "current interfaces. If a file cannot be opened with the access\n"
372 "requested, @code{open-file} throws an exception.")
373 #define FUNC_NAME s_scm_open_file
377 unsigned int retries
;
378 char *file
, *md
, *ptr
;
380 scm_dynwind_begin (0);
382 file
= scm_to_locale_string (filename
);
383 scm_dynwind_free (file
);
385 md
= scm_to_locale_string (mode
);
386 scm_dynwind_free (md
);
394 flags
|= O_WRONLY
| O_CREAT
| O_TRUNC
;
397 flags
|= O_WRONLY
| O_CREAT
| O_APPEND
;
400 scm_out_of_range (FUNC_NAME
, mode
);
408 flags
= (flags
& ~(O_RDONLY
| O_WRONLY
)) | O_RDWR
;
411 #if defined (O_BINARY)
415 case '0': /* unbuffered: handled later. */
416 case 'l': /* line buffered: handled during output. */
419 scm_out_of_range (FUNC_NAME
, mode
);
424 for (retries
= 0, fdes
= -1;
425 fdes
< 0 && retries
< 2;
428 SCM_SYSCALL (fdes
= open_or_open64 (file
, flags
, 0666));
433 if (en
== EMFILE
&& retries
== 0)
434 /* Run the GC in case it collects open file ports that are no
435 longer referenced. */
436 scm_i_gc (FUNC_NAME
);
438 SCM_SYSERROR_MSG ("~A: ~S",
439 scm_cons (scm_strerror (scm_from_int (en
)),
440 scm_cons (filename
, SCM_EOL
)), en
);
444 port
= scm_i_fdes_to_port (fdes
, scm_i_mode_bits (mode
),
445 fport_canonicalize_filename (filename
));
456 * Try getting the appropiate file flags for a given file descriptor
457 * under Windows. This incorporates some fancy operations because Windows
458 * differentiates between file, pipe and socket descriptors.
461 # define O_ACCMODE 0x0003
464 static int getflags (int fdes
)
468 int error
, optlen
= sizeof (int);
470 /* Is this a socket ? */
471 if (getsockopt (fdes
, SOL_SOCKET
, SO_ERROR
, (void *) &error
, &optlen
) >= 0)
473 /* Maybe a regular file ? */
474 else if (fstat (fdes
, &buf
) < 0)
478 /* Or an anonymous pipe handle ? */
479 if (buf
.st_mode
& _S_IFIFO
)
480 flags
= PeekNamedPipe ((HANDLE
) _get_osfhandle (fdes
), NULL
, 0,
481 NULL
, NULL
, NULL
) ? O_RDONLY
: O_WRONLY
;
483 else if (fdes
== fileno (stdin
) && isatty (fdes
))
485 /* stdout / stderr ? */
486 else if ((fdes
== fileno (stdout
) || fdes
== fileno (stderr
)) &&
494 #endif /* __MINGW32__ */
496 /* Building Guile ports from a file descriptor. */
498 /* Build a Scheme port from an open file descriptor `fdes'.
499 MODE indicates whether FILE is open for reading or writing; it uses
500 the same notation as open-file's second argument.
501 NAME is a string to be used as the port's filename.
504 scm_i_fdes_to_port (int fdes
, long mode_bits
, SCM name
)
505 #define FUNC_NAME "scm_fdes_to_port"
511 /* test that fdes is valid. */
513 flags
= getflags (fdes
);
515 flags
= fcntl (fdes
, F_GETFL
, 0);
521 && ((flags
!= O_WRONLY
&& (mode_bits
& SCM_WRTNG
))
522 || (flags
!= O_RDONLY
&& (mode_bits
& SCM_RDNG
))))
524 SCM_MISC_ERROR ("requested file mode not available on fdes", SCM_EOL
);
527 scm_i_scm_pthread_mutex_lock (&scm_i_port_table_mutex
);
529 port
= scm_new_port_table_entry (scm_tc16_fport
);
530 SCM_SET_CELL_TYPE(port
, scm_tc16_fport
| mode_bits
);
531 pt
= SCM_PTAB_ENTRY(port
);
534 = (scm_t_fport
*) scm_gc_malloc_pointerless (sizeof (scm_t_fport
),
538 pt
->rw_random
= SCM_FDES_RANDOM_P (fdes
);
539 SCM_SETSTREAM (port
, fp
);
540 if (mode_bits
& SCM_BUF0
)
541 scm_fport_buffer_add (port
, 0, 0);
543 scm_fport_buffer_add (port
, -1, -1);
545 SCM_SET_FILENAME (port
, name
);
546 scm_i_pthread_mutex_unlock (&scm_i_port_table_mutex
);
552 scm_fdes_to_port (int fdes
, char *mode
, SCM name
)
554 return scm_i_fdes_to_port (fdes
, scm_mode_bits (mode
), name
);
557 /* Return a lower bound on the number of bytes available for input. */
559 fport_input_waiting (SCM port
)
562 int fdes
= SCM_FSTREAM (port
)->fdes
;
563 struct timeval timeout
;
564 SELECT_TYPE read_set
;
565 SELECT_TYPE write_set
;
566 SELECT_TYPE except_set
;
569 FD_ZERO (&write_set
);
570 FD_ZERO (&except_set
);
572 FD_SET (fdes
, &read_set
);
577 if (select (SELECT_SET_SIZE
,
578 &read_set
, &write_set
, &except_set
, &timeout
)
580 scm_syserror ("fport_input_waiting");
581 return FD_ISSET (fdes
, &read_set
) ? 1 : 0;
583 #elif HAVE_IOCTL && defined (FIONREAD)
584 /* Note: cannot test just defined(FIONREAD) here, since mingw has FIONREAD
585 (for use with winsock ioctlsocket()) but not ioctl(). */
586 int fdes
= SCM_FSTREAM (port
)->fdes
;
588 ioctl(fdes
, FIONREAD
, &remir
);
592 scm_misc_error ("fport_input_waiting",
593 "Not fully implemented on this platform",
600 fport_print (SCM exp
, SCM port
, scm_print_state
*pstate SCM_UNUSED
)
602 scm_puts ("#<", port
);
603 scm_print_port_mode (exp
, port
);
604 if (SCM_OPFPORTP (exp
))
607 SCM name
= SCM_FILENAME (exp
);
608 if (scm_is_string (name
) || scm_is_symbol (name
))
609 scm_display (name
, port
);
611 scm_puts (SCM_PTOBNAME (SCM_PTOBNUM (exp
)), port
);
612 scm_putc (' ', port
);
613 fdes
= (SCM_FSTREAM (exp
))->fdes
;
617 scm_display (scm_ttyname (exp
), port
);
619 #endif /* HAVE_TTYNAME */
620 scm_intprint (fdes
, 10, port
);
624 scm_puts (SCM_PTOBNAME (SCM_PTOBNUM (exp
)), port
);
625 scm_putc (' ', port
);
626 scm_uintprint ((scm_t_bits
) SCM_PTAB_ENTRY (exp
), 16, port
);
628 scm_putc ('>', port
);
633 /* thread-local block for input on fport's fdes. */
635 fport_wait_for_input (SCM port
)
637 int fdes
= SCM_FSTREAM (port
)->fdes
;
639 if (!fport_input_waiting (port
))
643 int flags
= fcntl (fdes
, F_GETFL
);
646 scm_syserror ("scm_fdes_wait_for_input");
647 if (!(flags
& O_NONBLOCK
))
651 FD_SET (fdes
, &readfds
);
652 n
= scm_std_select (fdes
+ 1, &readfds
, NULL
, NULL
, NULL
);
654 while (n
== -1 && errno
== EINTR
);
657 #endif /* !__MINGW32__ */
659 static void fport_flush (SCM port
);
661 /* fill a port's read-buffer with a single read. returns the first
662 char or EOF if end of file. */
664 fport_fill_input (SCM port
)
667 scm_t_port
*pt
= SCM_PTAB_ENTRY (port
);
668 scm_t_fport
*fp
= SCM_FSTREAM (port
);
671 fport_wait_for_input (port
);
672 #endif /* !__MINGW32__ */
673 SCM_SYSCALL (count
= read (fp
->fdes
, pt
->read_buf
, pt
->read_buf_size
));
675 scm_syserror ("fport_fill_input");
677 return (scm_t_wchar
) EOF
;
680 pt
->read_pos
= pt
->read_buf
;
681 pt
->read_end
= pt
->read_buf
+ count
;
682 return *pt
->read_buf
;
687 fport_seek (SCM port
, scm_t_off offset
, int whence
)
689 scm_t_port
*pt
= SCM_PTAB_ENTRY (port
);
690 scm_t_fport
*fp
= SCM_FSTREAM (port
);
692 off_t_or_off64_t result
;
694 if (pt
->rw_active
== SCM_PORT_WRITE
)
696 if (offset
!= 0 || whence
!= SEEK_CUR
)
699 result
= rv
= lseek_or_lseek64 (fp
->fdes
, offset
, whence
);
703 /* read current position without disturbing the buffer. */
704 rv
= lseek_or_lseek64 (fp
->fdes
, offset
, whence
);
705 result
= rv
+ (pt
->write_pos
- pt
->write_buf
);
708 else if (pt
->rw_active
== SCM_PORT_READ
)
710 if (offset
!= 0 || whence
!= SEEK_CUR
)
712 /* could expand to avoid a second seek. */
713 scm_end_input (port
);
714 result
= rv
= lseek_or_lseek64 (fp
->fdes
, offset
, whence
);
718 /* read current position without disturbing the buffer
719 (particularly the unread-char buffer). */
720 rv
= lseek_or_lseek64 (fp
->fdes
, offset
, whence
);
721 result
= rv
- (pt
->read_end
- pt
->read_pos
);
723 if (pt
->read_buf
== pt
->putback_buf
)
724 result
-= pt
->saved_read_end
- pt
->saved_read_pos
;
727 else /* SCM_PORT_NEITHER */
729 result
= rv
= lseek_or_lseek64 (fp
->fdes
, offset
, whence
);
733 scm_syserror ("fport_seek");
739 fport_truncate (SCM port
, scm_t_off length
)
741 scm_t_fport
*fp
= SCM_FSTREAM (port
);
743 if (ftruncate (fp
->fdes
, length
) == -1)
744 scm_syserror ("ftruncate");
748 fport_write (SCM port
, const void *data
, size_t size
)
749 #define FUNC_NAME "fport_write"
751 /* this procedure tries to minimize the number of writes/flushes. */
752 scm_t_port
*pt
= SCM_PTAB_ENTRY (port
);
754 if (pt
->write_buf
== &pt
->shortbuf
755 || (pt
->write_pos
== pt
->write_buf
&& size
>= pt
->write_buf_size
))
757 /* Unbuffered port, or port with empty buffer and data won't fit in
759 if (full_write (SCM_FPORT_FDES (port
), data
, size
) < size
)
766 scm_t_off space
= pt
->write_end
- pt
->write_pos
;
770 /* data fits in buffer. */
771 memcpy (pt
->write_pos
, data
, size
);
772 pt
->write_pos
+= size
;
773 if (pt
->write_pos
== pt
->write_end
)
776 /* we can skip the line-buffering check if nothing's buffered. */
782 memcpy (pt
->write_pos
, data
, space
);
783 pt
->write_pos
= pt
->write_end
;
786 const void *ptr
= ((const char *) data
) + space
;
787 size_t remaining
= size
- space
;
789 if (size
>= pt
->write_buf_size
)
791 if (full_write (SCM_FPORT_FDES (port
), ptr
, remaining
)
798 memcpy (pt
->write_pos
, ptr
, remaining
);
799 pt
->write_pos
+= remaining
;
804 /* handle line buffering. */
805 if ((SCM_CELL_WORD_0 (port
) & SCM_BUFLINE
) && memchr (data
, '\n', size
))
811 /* becomes 1 when process is exiting: normal exception handling won't
812 work by this time. */
813 extern int scm_i_terminating
;
816 fport_flush (SCM port
)
818 scm_t_port
*pt
= SCM_PTAB_ENTRY (port
);
819 scm_t_fport
*fp
= SCM_FSTREAM (port
);
820 unsigned char *ptr
= pt
->write_buf
;
821 long init_size
= pt
->write_pos
- pt
->write_buf
;
822 long remaining
= init_size
;
824 while (remaining
> 0)
828 SCM_SYSCALL (count
= write (fp
->fdes
, ptr
, remaining
));
831 /* error. assume nothing was written this call, but
832 fix up the buffer for any previous successful writes. */
833 long done
= init_size
- remaining
;
839 for (i
= 0; i
< remaining
; i
++)
841 *(pt
->write_buf
+ i
) = *(pt
->write_buf
+ done
+ i
);
843 pt
->write_pos
= pt
->write_buf
+ remaining
;
845 if (scm_i_terminating
)
847 const char *msg
= "Error: could not flush file-descriptor ";
850 full_write (2, msg
, strlen (msg
));
851 sprintf (buf
, "%d\n", fp
->fdes
);
852 full_write (2, buf
, strlen (buf
));
856 else if (scm_gc_running_p
)
858 /* silently ignore the error. scm_error would abort if we
863 scm_syserror ("fport_flush");
868 pt
->write_pos
= pt
->write_buf
;
869 pt
->rw_active
= SCM_PORT_NEITHER
;
872 /* clear the read buffer and adjust the file position for unread bytes. */
874 fport_end_input (SCM port
, int offset
)
876 scm_t_fport
*fp
= SCM_FSTREAM (port
);
877 scm_t_port
*pt
= SCM_PTAB_ENTRY (port
);
879 offset
+= pt
->read_end
- pt
->read_pos
;
883 pt
->read_pos
= pt
->read_end
;
884 /* will throw error if unread-char used at beginning of file
885 then attempting to write. seems correct. */
886 if (lseek (fp
->fdes
, -offset
, SEEK_CUR
) == -1)
887 scm_syserror ("fport_end_input");
889 pt
->rw_active
= SCM_PORT_NEITHER
;
893 fport_close (SCM port
)
895 scm_t_fport
*fp
= SCM_FSTREAM (port
);
896 scm_t_port
*pt
= SCM_PTAB_ENTRY (port
);
900 SCM_SYSCALL (rv
= close (fp
->fdes
));
901 if (rv
== -1 && errno
!= EBADF
)
903 if (scm_gc_running_p
)
904 /* silently ignore the error. scm_error would abort if we
908 scm_syserror ("fport_close");
910 if (pt
->read_buf
== pt
->putback_buf
)
911 pt
->read_buf
= pt
->saved_read_buf
;
912 if (pt
->read_buf
!= &pt
->shortbuf
)
913 scm_gc_free (pt
->read_buf
, pt
->read_buf_size
, "port buffer");
914 if (pt
->write_buf
!= &pt
->shortbuf
)
915 scm_gc_free (pt
->write_buf
, pt
->write_buf_size
, "port buffer");
916 scm_gc_free (fp
, sizeof (*fp
), "file port");
921 fport_free (SCM port
)
930 scm_t_bits tc
= scm_make_port_type ("file", fport_fill_input
, fport_write
);
932 scm_set_port_free (tc
, fport_free
);
933 scm_set_port_print (tc
, fport_print
);
934 scm_set_port_flush (tc
, fport_flush
);
935 scm_set_port_end_input (tc
, fport_end_input
);
936 scm_set_port_close (tc
, fport_close
);
937 scm_set_port_seek (tc
, fport_seek
);
938 scm_set_port_truncate (tc
, fport_truncate
);
939 scm_set_port_input_waiting (tc
, fport_input_waiting
);
947 scm_tc16_fport
= scm_make_fptob ();
949 scm_c_define ("_IOFBF", scm_from_int (_IOFBF
));
950 scm_c_define ("_IOLBF", scm_from_int (_IOLBF
));
951 scm_c_define ("_IONBF", scm_from_int (_IONBF
));
953 loc_file_port_name_canonicalization
=
954 SCM_VARIABLE_LOC (scm_c_define ("%file-port-name-canonicalization",
957 #include "libguile/fports.x"