1 /* Lisp object printing and output streams.
2 Copyright (C) 1985, 86, 88, 93, 94, 95 Free Software Foundation, Inc.
4 This file is part of GNU Emacs.
6 GNU Emacs is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GNU Emacs is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU Emacs; see the file COPYING. If not, write to
18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
32 #include "dispextern.h"
35 #endif /* not standalone */
37 #ifdef USE_TEXT_PROPERTIES
38 #include "intervals.h"
41 Lisp_Object Vstandard_output
, Qstandard_output
;
43 /* These are used to print like we read. */
44 extern Lisp_Object Qbackquote
, Qcomma
, Qcomma_at
, Qcomma_dot
, Qfunction
;
46 #ifdef LISP_FLOAT_TYPE
47 Lisp_Object Vfloat_output_format
, Qfloat_output_format
;
48 #endif /* LISP_FLOAT_TYPE */
50 /* Avoid actual stack overflow in print. */
53 /* Detect most circularities to print finite output. */
54 #define PRINT_CIRCLE 200
55 Lisp_Object being_printed
[PRINT_CIRCLE
];
57 /* When printing into a buffer, first we put the text in this
58 block, then insert it all at once. */
61 /* Size allocated in print_buffer. */
62 int print_buffer_size
;
63 /* Size used in print_buffer. */
66 /* Maximum length of list to print in full; noninteger means
67 effectively infinity */
69 Lisp_Object Vprint_length
;
71 /* Maximum depth of list to print in full; noninteger means
72 effectively infinity. */
74 Lisp_Object Vprint_level
;
76 /* Nonzero means print newlines in strings as \n. */
78 int print_escape_newlines
;
80 Lisp_Object Qprint_escape_newlines
;
82 /* Nonzero means print (quote foo) forms as 'foo, etc. */
86 /* Nonzero means print #: before uninterned symbols. */
90 /* Association list of certain objects that are `eq' in the form being
91 printed and which should be `eq' when read back in, using the #n=object
92 and #n# reader forms. Each element has the form (object . n). */
94 Lisp_Object printed_gensyms
;
96 /* Nonzero means print newline to stdout before next minibuffer message.
99 extern int noninteractive_need_newline
;
101 #ifdef MAX_PRINT_CHARS
102 static int print_chars
;
103 static int max_print
;
104 #endif /* MAX_PRINT_CHARS */
106 void print_interval ();
109 /* Convert between chars and GLYPHs */
113 register GLYPH
*glyphs
;
123 str_to_glyph_cpy (str
, glyphs
)
127 register GLYPH
*gp
= glyphs
;
128 register char *cp
= str
;
135 str_to_glyph_ncpy (str
, glyphs
, n
)
140 register GLYPH
*gp
= glyphs
;
141 register char *cp
= str
;
148 glyph_to_str_cpy (glyphs
, str
)
152 register GLYPH
*gp
= glyphs
;
153 register char *cp
= str
;
156 *str
++ = *gp
++ & 0377;
160 /* Low level output routines for characters and strings */
162 /* Lisp functions to do output using a stream
163 must have the stream in a variable called printcharfun
164 and must start with PRINTPREPARE, end with PRINTFINISH,
165 and use PRINTDECLARE to declare common variables.
166 Use PRINTCHAR to output one character,
167 or call strout to output a block of characters.
170 #define PRINTDECLARE \
171 struct buffer *old = current_buffer; \
172 int old_point = -1, start_point; \
173 int specpdl_count = specpdl_ptr - specpdl; \
174 int free_print_buffer = 0; \
177 #define PRINTPREPARE \
178 original = printcharfun; \
179 if (NILP (printcharfun)) printcharfun = Qt; \
180 if (BUFFERP (printcharfun)) \
182 if (XBUFFER (printcharfun) != current_buffer) \
183 Fset_buffer (printcharfun); \
184 printcharfun = Qnil; \
186 if (MARKERP (printcharfun)) \
188 if (!(XMARKER (original)->buffer)) \
189 error ("Marker does not point anywhere"); \
190 if (XMARKER (original)->buffer != current_buffer) \
191 set_buffer_internal (XMARKER (original)->buffer); \
193 SET_PT (marker_position (printcharfun)); \
195 printcharfun = Qnil; \
197 if (NILP (printcharfun)) \
199 if (print_buffer != 0) \
200 record_unwind_protect (print_unwind, \
201 make_string (print_buffer, \
202 print_buffer_pos)); \
205 print_buffer_size = 1000; \
206 print_buffer = (char *) xmalloc (print_buffer_size); \
207 free_print_buffer = 1; \
209 print_buffer_pos = 0; \
211 printed_gensyms = Qnil
213 #define PRINTFINISH \
214 if (NILP (printcharfun)) \
215 insert (print_buffer, print_buffer_pos); \
216 if (free_print_buffer) \
218 xfree (print_buffer); \
221 unbind_to (specpdl_count, Qnil); \
222 if (MARKERP (original)) \
223 Fset_marker (original, make_number (PT), Qnil); \
224 if (old_point >= 0) \
225 SET_PT (old_point + (old_point >= start_point \
226 ? PT - start_point : 0)); \
227 if (old != current_buffer) \
228 set_buffer_internal (old); \
229 printed_gensyms = Qnil
231 #define PRINTCHAR(ch) printchar (ch, printcharfun)
233 /* Nonzero if there is no room to print any more characters
234 so print might as well return right away. */
236 #define PRINTFULLP() \
237 (EQ (printcharfun, Qt) && !noninteractive \
238 && printbufidx >= FRAME_WIDTH (XFRAME (WINDOW_FRAME (XWINDOW (minibuf_window)))))
240 /* This is used to restore the saved contents of print_buffer
241 when there is a recursive call to print. */
243 print_unwind (saved_text
)
244 Lisp_Object saved_text
;
246 bcopy (XSTRING (saved_text
)->data
, print_buffer
, XSTRING (saved_text
)->size
);
249 /* Index of first unused element of FRAME_MESSAGE_BUF (mini_frame). */
250 static int printbufidx
;
259 #ifdef MAX_PRINT_CHARS
262 #endif /* MAX_PRINT_CHARS */
270 len
= CHAR_STRING (ch
, work
, str
);
271 if (print_buffer_pos
+ len
>= print_buffer_size
)
272 print_buffer
= (char *) xrealloc (print_buffer
,
273 print_buffer_size
*= 2);
274 bcopy (str
, print_buffer
+ print_buffer_pos
, len
);
275 print_buffer_pos
+= len
;
282 = XFRAME (WINDOW_FRAME (XWINDOW (minibuf_window
)));
283 unsigned char work
[4], *str
;
284 int len
= CHAR_STRING (ch
, work
, str
);
291 putchar (*str
), str
++;
292 noninteractive_need_newline
= 1;
296 if (echo_area_glyphs
!= FRAME_MESSAGE_BUF (mini_frame
)
297 || !message_buf_print
)
299 message_log_maybe_newline ();
300 echo_area_glyphs
= FRAME_MESSAGE_BUF (mini_frame
);
302 echo_area_glyphs_length
= 0;
303 message_buf_print
= 1;
306 message_dolog (str
, len
, 0);
307 if (printbufidx
< FRAME_MESSAGE_BUF_SIZE (mini_frame
) - len
)
308 bcopy (str
, &FRAME_MESSAGE_BUF (mini_frame
)[printbufidx
], len
),
310 FRAME_MESSAGE_BUF (mini_frame
)[printbufidx
] = 0;
311 echo_area_glyphs_length
= printbufidx
;
315 #endif /* not standalone */
317 XSETFASTINT (ch1
, ch
);
322 strout (ptr
, size
, printcharfun
)
325 Lisp_Object printcharfun
;
332 if (EQ (printcharfun
, Qnil
))
334 if (print_buffer_pos
+ size
> print_buffer_size
)
336 print_buffer_size
= print_buffer_size
* 2 + size
;
337 print_buffer
= (char *) xrealloc (print_buffer
,
340 bcopy (ptr
, print_buffer
+ print_buffer_pos
, size
);
341 print_buffer_pos
+= size
;
343 #ifdef MAX_PRINT_CHARS
346 #endif /* MAX_PRINT_CHARS */
349 if (EQ (printcharfun
, Qt
))
352 = XFRAME (WINDOW_FRAME (XWINDOW (minibuf_window
)));
356 #ifdef MAX_PRINT_CHARS
359 #endif /* MAX_PRINT_CHARS */
363 fwrite (ptr
, 1, size
, stdout
);
364 noninteractive_need_newline
= 1;
368 if (echo_area_glyphs
!= FRAME_MESSAGE_BUF (mini_frame
)
369 || !message_buf_print
)
371 message_log_maybe_newline ();
372 echo_area_glyphs
= FRAME_MESSAGE_BUF (mini_frame
);
374 echo_area_glyphs_length
= 0;
375 message_buf_print
= 1;
378 message_dolog (ptr
, size
, 0);
379 if (size
> FRAME_MESSAGE_BUF_SIZE (mini_frame
) - printbufidx
- 1)
381 size
= FRAME_MESSAGE_BUF_SIZE (mini_frame
) - printbufidx
- 1;
382 /* Rewind incomplete multi-byte form. */
383 while (size
&& (unsigned char) ptr
[size
] >= 0xA0) size
--;
385 bcopy (ptr
, &FRAME_MESSAGE_BUF (mini_frame
) [printbufidx
], size
);
387 echo_area_glyphs_length
= printbufidx
;
388 FRAME_MESSAGE_BUF (mini_frame
) [printbufidx
] = 0;
396 /* Here, we must convert each multi-byte form to the
397 corresponding character code before handing it to PRINTCHAR. */
399 int ch
= STRING_CHAR_AND_LENGTH (ptr
+ i
, size
- i
, len
);
406 /* Print the contents of a string STRING using PRINTCHARFUN.
407 It isn't safe to use strout in many cases,
408 because printing one char can relocate. */
410 print_string (string
, printcharfun
)
412 Lisp_Object printcharfun
;
414 if (EQ (printcharfun
, Qt
) || NILP (printcharfun
))
415 /* strout is safe for output to a frame (echo area) or to print_buffer. */
416 strout (XSTRING (string
)->data
, XSTRING (string
)->size
, printcharfun
);
419 /* Otherwise, fetch the string address for each character. */
421 int size
= XSTRING (string
)->size
;
424 for (i
= 0; i
< size
; i
++)
425 PRINTCHAR (XSTRING (string
)->data
[i
]);
430 DEFUN ("write-char", Fwrite_char
, Swrite_char
, 1, 2, 0,
431 "Output character CHARACTER to stream PRINTCHARFUN.\n\
432 PRINTCHARFUN defaults to the value of `standard-output' (which see).")
433 (character
, printcharfun
)
434 Lisp_Object character
, printcharfun
;
438 if (NILP (printcharfun
))
439 printcharfun
= Vstandard_output
;
440 CHECK_NUMBER (character
, 0);
442 PRINTCHAR (XINT (character
));
447 /* Used from outside of print.c to print a block of SIZE chars at DATA
448 on the default output stream.
449 Do not use this on the contents of a Lisp string. */
451 write_string (data
, size
)
456 Lisp_Object printcharfun
;
458 printcharfun
= Vstandard_output
;
461 strout (data
, size
, printcharfun
);
465 /* Used from outside of print.c to print a block of SIZE chars at DATA
466 on a specified stream PRINTCHARFUN.
467 Do not use this on the contents of a Lisp string. */
469 write_string_1 (data
, size
, printcharfun
)
472 Lisp_Object printcharfun
;
477 strout (data
, size
, printcharfun
);
485 temp_output_buffer_setup (bufname
)
488 register struct buffer
*old
= current_buffer
;
489 register Lisp_Object buf
;
491 Fset_buffer (Fget_buffer_create (build_string (bufname
)));
493 current_buffer
->directory
= old
->directory
;
494 current_buffer
->read_only
= Qnil
;
497 XSETBUFFER (buf
, current_buffer
);
498 specbind (Qstandard_output
, buf
);
500 set_buffer_internal (old
);
504 internal_with_output_to_temp_buffer (bufname
, function
, args
)
506 Lisp_Object (*function
) ();
509 int count
= specpdl_ptr
- specpdl
;
510 Lisp_Object buf
, val
;
514 record_unwind_protect (Fset_buffer
, Fcurrent_buffer ());
515 temp_output_buffer_setup (bufname
);
516 buf
= Vstandard_output
;
519 val
= (*function
) (args
);
522 temp_output_buffer_show (buf
);
525 return unbind_to (count
, val
);
528 DEFUN ("with-output-to-temp-buffer", Fwith_output_to_temp_buffer
, Swith_output_to_temp_buffer
,
530 "Bind `standard-output' to buffer BUFNAME, eval BODY, then show that buffer.\n\
531 The buffer is cleared out initially, and marked as unmodified when done.\n\
532 All output done by BODY is inserted in that buffer by default.\n\
533 The buffer is displayed in another window, but not selected.\n\
534 The value of the last form in BODY is returned.\n\
535 If BODY does not finish normally, the buffer BUFNAME is not displayed.\n\n\
536 If variable `temp-buffer-show-function' is non-nil, call it at the end\n\
537 to get the buffer displayed. It gets one argument, the buffer to display.")
543 int count
= specpdl_ptr
- specpdl
;
544 Lisp_Object buf
, val
;
547 name
= Feval (Fcar (args
));
550 CHECK_STRING (name
, 0);
551 temp_output_buffer_setup (XSTRING (name
)->data
);
552 buf
= Vstandard_output
;
554 val
= Fprogn (Fcdr (args
));
556 temp_output_buffer_show (buf
);
558 return unbind_to (count
, val
);
560 #endif /* not standalone */
562 static void print ();
564 DEFUN ("terpri", Fterpri
, Sterpri
, 0, 1, 0,
565 "Output a newline to stream PRINTCHARFUN.\n\
566 If PRINTCHARFUN is omitted or nil, the value of `standard-output' is used.")
568 Lisp_Object printcharfun
;
572 if (NILP (printcharfun
))
573 printcharfun
= Vstandard_output
;
580 DEFUN ("prin1", Fprin1
, Sprin1
, 1, 2, 0,
581 "Output the printed representation of OBJECT, any Lisp object.\n\
582 Quoting characters are printed when needed to make output that `read'\n\
583 can handle, whenever this is possible.\n\
584 Output stream is PRINTCHARFUN, or value of `standard-output' (which see).")
585 (object
, printcharfun
)
586 Lisp_Object object
, printcharfun
;
590 #ifdef MAX_PRINT_CHARS
592 #endif /* MAX_PRINT_CHARS */
593 if (NILP (printcharfun
))
594 printcharfun
= Vstandard_output
;
597 print (object
, printcharfun
, 1);
602 /* a buffer which is used to hold output being built by prin1-to-string */
603 Lisp_Object Vprin1_to_string_buffer
;
605 DEFUN ("prin1-to-string", Fprin1_to_string
, Sprin1_to_string
, 1, 2, 0,
606 "Return a string containing the printed representation of OBJECT,\n\
607 any Lisp object. Quoting characters are used when needed to make output\n\
608 that `read' can handle, whenever this is possible, unless the optional\n\
609 second argument NOESCAPE is non-nil.")
611 Lisp_Object object
, noescape
;
614 Lisp_Object printcharfun
;
615 struct gcpro gcpro1
, gcpro2
;
618 /* Save and restore this--we are altering a buffer
619 but we don't want to deactivate the mark just for that.
620 No need for specbind, since errors deactivate the mark. */
621 tem
= Vdeactivate_mark
;
622 GCPRO2 (object
, tem
);
624 printcharfun
= Vprin1_to_string_buffer
;
627 print (object
, printcharfun
, NILP (noescape
));
628 /* Make Vprin1_to_string_buffer be the default buffer after PRINTFINSH */
630 set_buffer_internal (XBUFFER (Vprin1_to_string_buffer
));
631 object
= Fbuffer_string ();
634 set_buffer_internal (old
);
636 Vdeactivate_mark
= tem
;
642 DEFUN ("princ", Fprinc
, Sprinc
, 1, 2, 0,
643 "Output the printed representation of OBJECT, any Lisp object.\n\
644 No quoting characters are used; no delimiters are printed around\n\
645 the contents of strings.\n\
646 Output stream is PRINTCHARFUN, or value of standard-output (which see).")
647 (object
, printcharfun
)
648 Lisp_Object object
, printcharfun
;
652 if (NILP (printcharfun
))
653 printcharfun
= Vstandard_output
;
656 print (object
, printcharfun
, 0);
661 DEFUN ("print", Fprint
, Sprint
, 1, 2, 0,
662 "Output the printed representation of OBJECT, with newlines around it.\n\
663 Quoting characters are printed when needed to make output that `read'\n\
664 can handle, whenever this is possible.\n\
665 Output stream is PRINTCHARFUN, or value of `standard-output' (which see).")
666 (object
, printcharfun
)
667 Lisp_Object object
, printcharfun
;
672 #ifdef MAX_PRINT_CHARS
674 max_print
= MAX_PRINT_CHARS
;
675 #endif /* MAX_PRINT_CHARS */
676 if (NILP (printcharfun
))
677 printcharfun
= Vstandard_output
;
682 print (object
, printcharfun
, 1);
685 #ifdef MAX_PRINT_CHARS
688 #endif /* MAX_PRINT_CHARS */
693 /* The subroutine object for external-debugging-output is kept here
694 for the convenience of the debugger. */
695 Lisp_Object Qexternal_debugging_output
;
697 DEFUN ("external-debugging-output", Fexternal_debugging_output
, Sexternal_debugging_output
, 1, 1, 0,
698 "Write CHARACTER to stderr.\n\
699 You can call print while debugging emacs, and pass it this function\n\
700 to make it write to the debugging output.\n")
702 Lisp_Object character
;
704 CHECK_NUMBER (character
, 0);
705 putc (XINT (character
), stderr
);
710 /* This is the interface for debugging printing. */
716 Fprin1 (arg
, Qexternal_debugging_output
);
717 fprintf (stderr
, "\r\n");
720 DEFUN ("error-message-string", Ferror_message_string
, Serror_message_string
,
722 "Convert an error value (ERROR-SYMBOL . DATA) to an error message.")
726 struct buffer
*old
= current_buffer
;
727 Lisp_Object original
, printcharfun
, value
;
730 print_error_message (obj
, Vprin1_to_string_buffer
, NULL
);
732 set_buffer_internal (XBUFFER (Vprin1_to_string_buffer
));
733 value
= Fbuffer_string ();
737 set_buffer_internal (old
);
743 /* Print an error message for the error DATA
744 onto Lisp output stream STREAM (suitable for the print functions). */
746 print_error_message (data
, stream
)
747 Lisp_Object data
, stream
;
749 Lisp_Object errname
, errmsg
, file_error
, tail
;
753 errname
= Fcar (data
);
755 if (EQ (errname
, Qerror
))
758 if (!CONSP (data
)) data
= Qnil
;
759 errmsg
= Fcar (data
);
764 errmsg
= Fget (errname
, Qerror_message
);
765 file_error
= Fmemq (Qfile_error
,
766 Fget (errname
, Qerror_conditions
));
769 /* Print an error message including the data items. */
771 tail
= Fcdr_safe (data
);
774 /* For file-error, make error message by concatenating
775 all the data items. They are all strings. */
776 if (!NILP (file_error
) && !NILP (tail
))
777 errmsg
= XCONS (tail
)->car
, tail
= XCONS (tail
)->cdr
;
779 if (STRINGP (errmsg
))
780 Fprinc (errmsg
, stream
);
782 write_string_1 ("peculiar error", -1, stream
);
784 for (i
= 0; CONSP (tail
); tail
= Fcdr (tail
), i
++)
786 write_string_1 (i
? ", " : ": ", 2, stream
);
787 if (!NILP (file_error
))
788 Fprinc (Fcar (tail
), stream
);
790 Fprin1 (Fcar (tail
), stream
);
795 #ifdef LISP_FLOAT_TYPE
798 * The buffer should be at least as large as the max string size of the
799 * largest float, printed in the biggest notation. This is undoubtedly
800 * 20d float_output_format, with the negative of the C-constant "HUGE"
803 * On the vax the worst case is -1e38 in 20d format which takes 61 bytes.
805 * I assume that IEEE-754 format numbers can take 329 bytes for the worst
806 * case of -1e307 in 20d float_output_format. What is one to do (short of
807 * re-writing _doprnt to be more sane)?
812 float_to_string (buf
, data
)
819 if (NILP (Vfloat_output_format
)
820 || !STRINGP (Vfloat_output_format
))
823 sprintf (buf
, "%.17g", data
);
828 /* Check that the spec we have is fully valid.
829 This means not only valid for printf,
830 but meant for floats, and reasonable. */
831 cp
= XSTRING (Vfloat_output_format
)->data
;
840 /* Check the width specification. */
842 if ('0' <= *cp
&& *cp
<= '9')
846 width
= (width
* 10) + (*cp
++ - '0');
847 while (*cp
>= '0' && *cp
<= '9');
849 /* A precision of zero is valid only for %f. */
851 || (width
== 0 && *cp
!= 'f'))
855 if (*cp
!= 'e' && *cp
!= 'f' && *cp
!= 'g')
861 sprintf (buf
, XSTRING (Vfloat_output_format
)->data
, data
);
864 /* Make sure there is a decimal point with digit after, or an
865 exponent, so that the value is readable as a float. But don't do
866 this with "%.0f"; it's valid for that not to produce a decimal
867 point. Note that width can be 0 only for %.0f. */
870 for (cp
= buf
; *cp
; cp
++)
871 if ((*cp
< '0' || *cp
> '9') && *cp
!= '-')
874 if (*cp
== '.' && cp
[1] == 0)
888 #endif /* LISP_FLOAT_TYPE */
891 print (obj
, printcharfun
, escapeflag
)
893 register Lisp_Object printcharfun
;
900 #if 1 /* I'm not sure this is really worth doing. */
901 /* Detect circularities and truncate them.
902 No need to offer any alternative--this is better than an error. */
903 if (CONSP (obj
) || VECTORP (obj
) || COMPILEDP (obj
))
906 for (i
= 0; i
< print_depth
; i
++)
907 if (EQ (obj
, being_printed
[i
]))
909 sprintf (buf
, "#%d", i
);
910 strout (buf
, -1, printcharfun
);
916 being_printed
[print_depth
] = obj
;
919 if (print_depth
> PRINT_CIRCLE
)
920 error ("Apparently circular structure being printed");
921 #ifdef MAX_PRINT_CHARS
922 if (max_print
&& print_chars
> max_print
)
927 #endif /* MAX_PRINT_CHARS */
929 switch (XGCTYPE (obj
))
932 if (sizeof (int) == sizeof (EMACS_INT
))
933 sprintf (buf
, "%d", XINT (obj
));
934 else if (sizeof (long) == sizeof (EMACS_INT
))
935 sprintf (buf
, "%ld", XINT (obj
));
938 strout (buf
, -1, printcharfun
);
941 #ifdef LISP_FLOAT_TYPE
944 char pigbuf
[350]; /* see comments in float_to_string */
946 float_to_string (pigbuf
, XFLOAT(obj
)->data
);
947 strout (pigbuf
, -1, printcharfun
);
954 print_string (obj
, printcharfun
);
958 register unsigned char c
;
963 #ifdef USE_TEXT_PROPERTIES
964 if (!NULL_INTERVAL_P (XSTRING (obj
)->intervals
))
972 for (i
= 0; i
< XSTRING (obj
)->size
; i
++)
975 c
= XSTRING (obj
)->data
[i
];
976 if (c
== '\n' && print_escape_newlines
)
981 else if (c
== '\f' && print_escape_newlines
)
988 if (c
== '\"' || c
== '\\')
995 #ifdef USE_TEXT_PROPERTIES
996 if (!NULL_INTERVAL_P (XSTRING (obj
)->intervals
))
998 traverse_intervals (XSTRING (obj
)->intervals
,
999 0, 0, print_interval
, printcharfun
);
1010 register int confusing
;
1011 register unsigned char *p
= XSYMBOL (obj
)->name
->data
;
1012 register unsigned char *end
= p
+ XSYMBOL (obj
)->name
->size
;
1013 register unsigned char c
;
1016 if (p
!= end
&& (*p
== '-' || *p
== '+')) p
++;
1021 while (p
!= end
&& ((*p
>= '0' && *p
<= '9')
1022 /* Needed for \2e10. */
1025 confusing
= (end
== p
);
1028 /* If we print an uninterned symbol as part of a complex object and
1029 the flag print-gensym is non-nil, prefix it with #n= to read the
1030 object back with the #n# reader syntax later if needed. */
1031 if (print_gensym
&& NILP (XSYMBOL (obj
)->obarray
))
1033 if (print_depth
> 1)
1036 tem
= Fassq (obj
, printed_gensyms
);
1040 print (XCDR (tem
), printcharfun
, escapeflag
);
1046 if (CONSP (printed_gensyms
))
1047 XSETFASTINT (tem
, XCDR (XCAR (printed_gensyms
)) + 1);
1049 XSETFASTINT (tem
, 1);
1050 printed_gensyms
= Fcons (Fcons (obj
, tem
), printed_gensyms
);
1053 print (tem
, printcharfun
, escapeflag
);
1061 for (i
= 0; i
< XSYMBOL (obj
)->name
->size
; i
++)
1064 c
= XSYMBOL (obj
)->name
->data
[i
];
1068 if (c
== '\"' || c
== '\\' || c
== '\''
1069 || c
== ';' || c
== '#' || c
== '(' || c
== ')'
1070 || c
== ',' || c
=='.' || c
== '`'
1071 || c
== '[' || c
== ']' || c
== '?' || c
<= 040
1073 PRINTCHAR ('\\'), confusing
= 0;
1081 /* If deeper than spec'd depth, print placeholder. */
1082 if (INTEGERP (Vprint_level
)
1083 && print_depth
> XINT (Vprint_level
))
1084 strout ("...", -1, printcharfun
);
1085 else if (print_quoted
&& CONSP (XCDR (obj
)) && NILP (XCDR (XCDR (obj
)))
1086 && (EQ (XCAR (obj
), Qquote
)))
1089 print (XCAR (XCDR (obj
)), printcharfun
, escapeflag
);
1091 else if (print_quoted
&& CONSP (XCDR (obj
)) && NILP (XCDR (XCDR (obj
)))
1092 && (EQ (XCAR (obj
), Qfunction
)))
1096 print (XCAR (XCDR (obj
)), printcharfun
, escapeflag
);
1098 else if (print_quoted
&& CONSP (XCDR (obj
)) && NILP (XCDR (XCDR (obj
)))
1099 && ((EQ (XCAR (obj
), Qbackquote
)
1100 || EQ (XCAR (obj
), Qcomma
)
1101 || EQ (XCAR (obj
), Qcomma_at
)
1102 || EQ (XCAR (obj
), Qcomma_dot
))))
1104 print (XCAR (obj
), printcharfun
, 0);
1105 print (XCAR (XCDR (obj
)), printcharfun
, escapeflag
);
1112 register int max
= 0;
1114 if (INTEGERP (Vprint_length
))
1115 max
= XINT (Vprint_length
);
1116 /* Could recognize circularities in cdrs here,
1117 but that would make printing of long lists quadratic.
1118 It's not worth doing. */
1125 strout ("...", 3, printcharfun
);
1128 print (XCAR (obj
), printcharfun
, escapeflag
);
1134 strout (" . ", 3, printcharfun
);
1135 print (obj
, printcharfun
, escapeflag
);
1141 case Lisp_Vectorlike
:
1146 strout ("#<process ", -1, printcharfun
);
1147 print_string (XPROCESS (obj
)->name
, printcharfun
);
1151 print_string (XPROCESS (obj
)->name
, printcharfun
);
1153 else if (BOOL_VECTOR_P (obj
))
1156 register unsigned char c
;
1157 struct gcpro gcpro1
;
1159 = (XBOOL_VECTOR (obj
)->size
+ BITS_PER_CHAR
- 1) / BITS_PER_CHAR
;
1165 sprintf (buf
, "%d", XBOOL_VECTOR (obj
)->size
);
1166 strout (buf
, -1, printcharfun
);
1169 /* Don't print more characters than the specified maximum. */
1170 if (INTEGERP (Vprint_length
)
1171 && XINT (Vprint_length
) < size_in_chars
)
1172 size_in_chars
= XINT (Vprint_length
);
1174 for (i
= 0; i
< size_in_chars
; i
++)
1177 c
= XBOOL_VECTOR (obj
)->data
[i
];
1178 if (c
== '\n' && print_escape_newlines
)
1183 else if (c
== '\f' && print_escape_newlines
)
1190 if (c
== '\"' || c
== '\\')
1199 else if (SUBRP (obj
))
1201 strout ("#<subr ", -1, printcharfun
);
1202 strout (XSUBR (obj
)->symbol_name
, -1, printcharfun
);
1206 else if (WINDOWP (obj
))
1208 strout ("#<window ", -1, printcharfun
);
1209 sprintf (buf
, "%d", XFASTINT (XWINDOW (obj
)->sequence_number
));
1210 strout (buf
, -1, printcharfun
);
1211 if (!NILP (XWINDOW (obj
)->buffer
))
1213 strout (" on ", -1, printcharfun
);
1214 print_string (XBUFFER (XWINDOW (obj
)->buffer
)->name
, printcharfun
);
1218 else if (BUFFERP (obj
))
1220 if (NILP (XBUFFER (obj
)->name
))
1221 strout ("#<killed buffer>", -1, printcharfun
);
1222 else if (escapeflag
)
1224 strout ("#<buffer ", -1, printcharfun
);
1225 print_string (XBUFFER (obj
)->name
, printcharfun
);
1229 print_string (XBUFFER (obj
)->name
, printcharfun
);
1231 else if (WINDOW_CONFIGURATIONP (obj
))
1233 strout ("#<window-configuration>", -1, printcharfun
);
1235 else if (FRAMEP (obj
))
1237 strout ((FRAME_LIVE_P (XFRAME (obj
))
1238 ? "#<frame " : "#<dead frame "),
1240 print_string (XFRAME (obj
)->name
, printcharfun
);
1241 sprintf (buf
, " 0x%lx", (unsigned long) (XFRAME (obj
)));
1242 strout (buf
, -1, printcharfun
);
1245 #endif /* not standalone */
1248 int size
= XVECTOR (obj
)->size
;
1249 if (COMPILEDP (obj
))
1252 size
&= PSEUDOVECTOR_SIZE_MASK
;
1254 if (CHAR_TABLE_P (obj
))
1256 /* We print a char-table as if it were a vector,
1257 lumping the parent and default slots in with the
1258 character slots. But we add #^ as a prefix. */
1261 size
&= PSEUDOVECTOR_SIZE_MASK
;
1263 if (size
& PSEUDOVECTOR_FLAG
)
1269 register Lisp_Object tem
;
1271 /* Don't print more elements than the specified maximum. */
1272 if (INTEGERP (Vprint_length
)
1273 && XINT (Vprint_length
) < size
)
1274 size
= XINT (Vprint_length
);
1276 for (i
= 0; i
< size
; i
++)
1278 if (i
) PRINTCHAR (' ');
1279 tem
= XVECTOR (obj
)->contents
[i
];
1280 print (tem
, printcharfun
, escapeflag
);
1289 switch (XMISCTYPE (obj
))
1291 case Lisp_Misc_Marker
:
1292 strout ("#<marker ", -1, printcharfun
);
1294 /* Do you think this is necessary? */
1295 if (XMARKER (obj
)->insertion_type
!= 0)
1296 strout ("(before-insertion) ", -1, printcharfun
);
1298 if (!(XMARKER (obj
)->buffer
))
1299 strout ("in no buffer", -1, printcharfun
);
1302 sprintf (buf
, "at %d", marker_position (obj
));
1303 strout (buf
, -1, printcharfun
);
1304 strout (" in ", -1, printcharfun
);
1305 print_string (XMARKER (obj
)->buffer
->name
, printcharfun
);
1310 case Lisp_Misc_Overlay
:
1311 strout ("#<overlay ", -1, printcharfun
);
1312 if (!(XMARKER (OVERLAY_START (obj
))->buffer
))
1313 strout ("in no buffer", -1, printcharfun
);
1316 sprintf (buf
, "from %d to %d in ",
1317 marker_position (OVERLAY_START (obj
)),
1318 marker_position (OVERLAY_END (obj
)));
1319 strout (buf
, -1, printcharfun
);
1320 print_string (XMARKER (OVERLAY_START (obj
))->buffer
->name
,
1326 /* Remaining cases shouldn't happen in normal usage, but let's print
1327 them anyway for the benefit of the debugger. */
1328 case Lisp_Misc_Free
:
1329 strout ("#<misc free cell>", -1, printcharfun
);
1332 case Lisp_Misc_Intfwd
:
1333 sprintf (buf
, "#<intfwd to %d>", *XINTFWD (obj
)->intvar
);
1334 strout (buf
, -1, printcharfun
);
1337 case Lisp_Misc_Boolfwd
:
1338 sprintf (buf
, "#<boolfwd to %s>",
1339 (*XBOOLFWD (obj
)->boolvar
? "t" : "nil"));
1340 strout (buf
, -1, printcharfun
);
1343 case Lisp_Misc_Objfwd
:
1344 strout ("#<objfwd to ", -1, printcharfun
);
1345 print (*XOBJFWD (obj
)->objvar
, printcharfun
, escapeflag
);
1349 case Lisp_Misc_Buffer_Objfwd
:
1350 strout ("#<buffer_objfwd to ", -1, printcharfun
);
1351 print (*(Lisp_Object
*)((char *)current_buffer
1352 + XBUFFER_OBJFWD (obj
)->offset
),
1353 printcharfun
, escapeflag
);
1357 case Lisp_Misc_Kboard_Objfwd
:
1358 strout ("#<kboard_objfwd to ", -1, printcharfun
);
1359 print (*(Lisp_Object
*)((char *) current_kboard
1360 + XKBOARD_OBJFWD (obj
)->offset
),
1361 printcharfun
, escapeflag
);
1365 case Lisp_Misc_Buffer_Local_Value
:
1366 strout ("#<buffer_local_value ", -1, printcharfun
);
1367 goto do_buffer_local
;
1368 case Lisp_Misc_Some_Buffer_Local_Value
:
1369 strout ("#<some_buffer_local_value ", -1, printcharfun
);
1371 strout ("[realvalue] ", -1, printcharfun
);
1372 print (XBUFFER_LOCAL_VALUE (obj
)->car
, printcharfun
, escapeflag
);
1373 strout ("[buffer] ", -1, printcharfun
);
1374 print (XCONS (XBUFFER_LOCAL_VALUE (obj
)->cdr
)->car
,
1375 printcharfun
, escapeflag
);
1376 strout ("[alist-elt] ", -1, printcharfun
);
1377 print (XCONS (XCONS (XBUFFER_LOCAL_VALUE (obj
)->cdr
)->cdr
)->car
,
1378 printcharfun
, escapeflag
);
1379 strout ("[default-value] ", -1, printcharfun
);
1380 print (XCONS (XCONS (XBUFFER_LOCAL_VALUE (obj
)->cdr
)->cdr
)->cdr
,
1381 printcharfun
, escapeflag
);
1389 #endif /* standalone */
1394 /* We're in trouble if this happens!
1395 Probably should just abort () */
1396 strout ("#<EMACS BUG: INVALID DATATYPE ", -1, printcharfun
);
1398 sprintf (buf
, "(MISC 0x%04x)", (int) XMISCTYPE (obj
));
1399 else if (VECTORLIKEP (obj
))
1400 sprintf (buf
, "(PVEC 0x%08x)", (int) XVECTOR (obj
)->size
);
1402 sprintf (buf
, "(0x%02x)", (int) XTYPE (obj
));
1403 strout (buf
, -1, printcharfun
);
1404 strout (" Save your buffers immediately and please report this bug>",
1412 #ifdef USE_TEXT_PROPERTIES
1414 /* Print a description of INTERVAL using PRINTCHARFUN.
1415 This is part of printing a string that has text properties. */
1418 print_interval (interval
, printcharfun
)
1420 Lisp_Object printcharfun
;
1423 print (make_number (interval
->position
), printcharfun
, 1);
1425 print (make_number (interval
->position
+ LENGTH (interval
)),
1428 print (interval
->plist
, printcharfun
, 1);
1431 #endif /* USE_TEXT_PROPERTIES */
1436 DEFVAR_LISP ("standard-output", &Vstandard_output
,
1437 "Output stream `print' uses by default for outputting a character.\n\
1438 This may be any function of one argument.\n\
1439 It may also be a buffer (output is inserted before point)\n\
1440 or a marker (output is inserted and the marker is advanced)\n\
1441 or the symbol t (output appears in the echo area).");
1442 Vstandard_output
= Qt
;
1443 Qstandard_output
= intern ("standard-output");
1444 staticpro (&Qstandard_output
);
1446 #ifdef LISP_FLOAT_TYPE
1447 DEFVAR_LISP ("float-output-format", &Vfloat_output_format
,
1448 "The format descriptor string used to print floats.\n\
1449 This is a %-spec like those accepted by `printf' in C,\n\
1450 but with some restrictions. It must start with the two characters `%.'.\n\
1451 After that comes an integer precision specification,\n\
1452 and then a letter which controls the format.\n\
1453 The letters allowed are `e', `f' and `g'.\n\
1454 Use `e' for exponential notation \"DIG.DIGITSeEXPT\"\n\
1455 Use `f' for decimal point notation \"DIGITS.DIGITS\".\n\
1456 Use `g' to choose the shorter of those two formats for the number at hand.\n\
1457 The precision in any of these cases is the number of digits following\n\
1458 the decimal point. With `f', a precision of 0 means to omit the\n\
1459 decimal point. 0 is not allowed with `e' or `g'.\n\n\
1460 A value of nil means to use `%.17g'.");
1461 Vfloat_output_format
= Qnil
;
1462 Qfloat_output_format
= intern ("float-output-format");
1463 staticpro (&Qfloat_output_format
);
1464 #endif /* LISP_FLOAT_TYPE */
1466 DEFVAR_LISP ("print-length", &Vprint_length
,
1467 "Maximum length of list to print before abbreviating.\n\
1468 A value of nil means no limit.");
1469 Vprint_length
= Qnil
;
1471 DEFVAR_LISP ("print-level", &Vprint_level
,
1472 "Maximum depth of list nesting to print before abbreviating.\n\
1473 A value of nil means no limit.");
1474 Vprint_level
= Qnil
;
1476 DEFVAR_BOOL ("print-escape-newlines", &print_escape_newlines
,
1477 "Non-nil means print newlines in strings as backslash-n.\n\
1478 Also print formfeeds as backslash-f.");
1479 print_escape_newlines
= 0;
1481 DEFVAR_BOOL ("print-quoted", &print_quoted
,
1482 "Non-nil means print quoted forms with reader syntax.\n\
1483 I.e., (quote foo) prints as 'foo, (function foo) as #'foo, and, backquoted\n\
1484 forms print in the new syntax.");
1487 DEFVAR_BOOL ("print-gensym", &print_gensym
,
1488 "Non-nil means print uninterned symbols so they will read as uninterned.\n\
1489 I.e., the value of (make-symbol "foobar
") prints as #:foobar.");
1492 /* prin1_to_string_buffer initialized in init_buffer_once in buffer.c */
1493 staticpro (&Vprin1_to_string_buffer
);
1496 defsubr (&Sprin1_to_string
);
1497 defsubr (&Serror_message_string
);
1501 defsubr (&Swrite_char
);
1502 defsubr (&Sexternal_debugging_output
);
1504 Qexternal_debugging_output
= intern ("external-debugging-output");
1505 staticpro (&Qexternal_debugging_output
);
1507 Qprint_escape_newlines
= intern ("print-escape-newlines");
1508 staticpro (&Qprint_escape_newlines
);
1510 staticpro (&printed_gensyms
);
1511 printed_gensyms
= Qnil
;
1514 defsubr (&Swith_output_to_temp_buffer
);
1515 #endif /* not standalone */