Commit | Line | Data |
---|---|---|
38010d50 JB |
1 | /* Lisp object printing and output streams. |
2 | Copyright (C) 1985, 1986, 1988 Free Software Foundation, Inc. | |
3 | ||
4 | This file is part of GNU Emacs. | |
5 | ||
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 1, or (at your option) | |
9 | any later version. | |
10 | ||
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. | |
15 | ||
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, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
19 | ||
20 | ||
21 | #include "config.h" | |
22 | #include <stdio.h> | |
23 | #undef NULL | |
24 | #include "lisp.h" | |
25 | ||
26 | #ifndef standalone | |
27 | #include "buffer.h" | |
28 | #include "screen.h" | |
29 | #include "window.h" | |
30 | #include "process.h" | |
31 | #include "dispextern.h" | |
32 | #include "termchar.h" | |
33 | #endif /* not standalone */ | |
34 | ||
35 | Lisp_Object Vstandard_output, Qstandard_output; | |
36 | ||
37 | #ifdef LISP_FLOAT_TYPE | |
38 | Lisp_Object Vfloat_output_format, Qfloat_output_format; | |
39 | #endif /* LISP_FLOAT_TYPE */ | |
40 | ||
41 | /* Avoid actual stack overflow in print. */ | |
42 | int print_depth; | |
43 | ||
44 | /* Maximum length of list to print in full; noninteger means | |
45 | effectively infinity */ | |
46 | ||
47 | Lisp_Object Vprint_length; | |
48 | ||
49 | /* Maximum depth of list to print in full; noninteger means | |
50 | effectively infinity. */ | |
51 | ||
52 | Lisp_Object Vprint_level; | |
53 | ||
54 | /* Nonzero means print newlines in strings as \n. */ | |
55 | ||
56 | int print_escape_newlines; | |
57 | ||
58 | Lisp_Object Qprint_escape_newlines; | |
59 | ||
60 | /* Nonzero means print newline before next minibuffer message. | |
61 | Defined in xdisp.c */ | |
62 | ||
63 | extern int noninteractive_need_newline; | |
64 | #ifdef MAX_PRINT_CHARS | |
65 | static int print_chars; | |
66 | static int max_print; | |
67 | #endif /* MAX_PRINT_CHARS */ | |
68 | \f | |
69 | #if 0 | |
70 | /* Convert between chars and GLYPHs */ | |
71 | ||
72 | int | |
73 | glyphlen (glyphs) | |
74 | register GLYPH *glyphs; | |
75 | { | |
76 | register int i = 0; | |
77 | ||
78 | while (glyphs[i]) | |
79 | i++; | |
80 | return i; | |
81 | } | |
82 | ||
83 | void | |
84 | str_to_glyph_cpy (str, glyphs) | |
85 | char *str; | |
86 | GLYPH *glyphs; | |
87 | { | |
88 | register GLYPH *gp = glyphs; | |
89 | register char *cp = str; | |
90 | ||
91 | while (*cp) | |
92 | *gp++ = *cp++; | |
93 | } | |
94 | ||
95 | void | |
96 | str_to_glyph_ncpy (str, glyphs, n) | |
97 | char *str; | |
98 | GLYPH *glyphs; | |
99 | register int n; | |
100 | { | |
101 | register GLYPH *gp = glyphs; | |
102 | register char *cp = str; | |
103 | ||
104 | while (n-- > 0) | |
105 | *gp++ = *cp++; | |
106 | } | |
107 | ||
108 | void | |
109 | glyph_to_str_cpy (glyphs, str) | |
110 | GLYPH *glyphs; | |
111 | char *str; | |
112 | { | |
113 | register GLYPH *gp = glyphs; | |
114 | register char *cp = str; | |
115 | ||
116 | while (*gp) | |
117 | *str++ = *gp++ & 0377; | |
118 | } | |
119 | #endif | |
120 | \f | |
121 | /* Low level output routines for charaters and strings */ | |
122 | ||
123 | /* Lisp functions to do output using a stream | |
124 | must have the stream in a variable called printcharfun | |
125 | and must start with PRINTPREPARE and end with PRINTFINISH. | |
126 | Use PRINTCHAR to output one character, | |
127 | or call strout to output a block of characters. | |
128 | Also, each one must have the declarations | |
129 | struct buffer *old = current_buffer; | |
130 | int old_point = -1, start_point; | |
131 | Lisp_Object original; | |
132 | */ | |
133 | ||
134 | #define PRINTPREPARE \ | |
135 | original = printcharfun; \ | |
136 | if (NULL (printcharfun)) printcharfun = Qt; \ | |
137 | if (XTYPE (printcharfun) == Lisp_Buffer) \ | |
138 | { if (XBUFFER (printcharfun) != current_buffer) Fset_buffer (printcharfun); \ | |
139 | printcharfun = Qnil;}\ | |
140 | if (XTYPE (printcharfun) == Lisp_Marker) \ | |
141 | { if (XMARKER (original)->buffer != current_buffer) \ | |
142 | set_buffer_internal (XMARKER (original)->buffer); \ | |
143 | old_point = point; \ | |
144 | SET_PT (marker_position (printcharfun)); \ | |
145 | start_point = point; \ | |
146 | printcharfun = Qnil;} | |
147 | ||
148 | #define PRINTFINISH \ | |
149 | if (XTYPE (original) == Lisp_Marker) \ | |
150 | Fset_marker (original, make_number (point), Qnil); \ | |
151 | if (old_point >= 0) \ | |
152 | SET_PT ((old_point >= start_point ? point - start_point : 0) + old_point); \ | |
153 | if (old != current_buffer) \ | |
154 | set_buffer_internal (old) | |
155 | ||
156 | #define PRINTCHAR(ch) printchar (ch, printcharfun) | |
157 | ||
158 | /* Index of first unused element of message_buf */ | |
159 | static int printbufidx; | |
160 | ||
161 | static void | |
162 | printchar (ch, fun) | |
163 | unsigned char ch; | |
164 | Lisp_Object fun; | |
165 | { | |
166 | Lisp_Object ch1; | |
167 | ||
168 | #ifdef MAX_PRINT_CHARS | |
169 | if (max_print) | |
170 | print_chars++; | |
171 | #endif /* MAX_PRINT_CHARS */ | |
172 | #ifndef standalone | |
173 | if (EQ (fun, Qnil)) | |
174 | { | |
175 | QUIT; | |
176 | insert (&ch, 1); | |
177 | return; | |
178 | } | |
179 | ||
180 | if (EQ (fun, Qt)) | |
181 | { | |
182 | if (noninteractive) | |
183 | { | |
184 | putchar (ch); | |
185 | noninteractive_need_newline = 1; | |
186 | return; | |
187 | } | |
188 | ||
189 | if (echo_area_glyphs != SCREEN_MESSAGE_BUF (selected_screen) | |
190 | || !message_buf_print) | |
191 | { | |
192 | echo_area_glyphs = SCREEN_MESSAGE_BUF (selected_screen); | |
193 | printbufidx = 0; | |
194 | message_buf_print = 1; | |
195 | } | |
196 | ||
197 | if (printbufidx < SCREEN_WIDTH (selected_screen) - 1) | |
198 | SCREEN_MESSAGE_BUF (selected_screen)[printbufidx++] = ch; | |
199 | SCREEN_MESSAGE_BUF (selected_screen)[printbufidx] = 0; | |
200 | ||
201 | return; | |
202 | } | |
203 | #endif /* not standalone */ | |
204 | ||
205 | XFASTINT (ch1) = ch; | |
206 | call1 (fun, ch1); | |
207 | } | |
208 | ||
209 | static void | |
210 | strout (ptr, size, printcharfun) | |
211 | char *ptr; | |
212 | int size; | |
213 | Lisp_Object printcharfun; | |
214 | { | |
215 | int i = 0; | |
216 | ||
217 | if (EQ (printcharfun, Qnil)) | |
218 | { | |
219 | insert (ptr, size >= 0 ? size : strlen (ptr)); | |
220 | #ifdef MAX_PRINT_CHARS | |
221 | if (max_print) | |
222 | print_chars += size >= 0 ? size : strlen(ptr); | |
223 | #endif /* MAX_PRINT_CHARS */ | |
224 | return; | |
225 | } | |
226 | if (EQ (printcharfun, Qt)) | |
227 | { | |
228 | i = size >= 0 ? size : strlen (ptr); | |
229 | #ifdef MAX_PRINT_CHARS | |
230 | if (max_print) | |
231 | print_chars += i; | |
232 | #endif /* MAX_PRINT_CHARS */ | |
233 | ||
234 | if (noninteractive) | |
235 | { | |
236 | fwrite (ptr, 1, i, stdout); | |
237 | noninteractive_need_newline = 1; | |
238 | return; | |
239 | } | |
240 | ||
241 | if (echo_area_glyphs != SCREEN_MESSAGE_BUF (selected_screen) | |
242 | || !message_buf_print) | |
243 | { | |
244 | echo_area_glyphs = SCREEN_MESSAGE_BUF (selected_screen); | |
245 | printbufidx = 0; | |
246 | message_buf_print = 1; | |
247 | } | |
248 | ||
249 | if (i > SCREEN_WIDTH (selected_screen) - printbufidx - 1) | |
250 | i = SCREEN_WIDTH (selected_screen) - printbufidx - 1; | |
251 | bcopy (ptr, &SCREEN_MESSAGE_BUF (selected_screen) [printbufidx], i); | |
252 | printbufidx += i; | |
253 | SCREEN_MESSAGE_BUF (selected_screen) [printbufidx] = 0; | |
254 | ||
255 | return; | |
256 | } | |
257 | ||
258 | if (size >= 0) | |
259 | while (i < size) | |
260 | PRINTCHAR (ptr[i++]); | |
261 | else | |
262 | while (ptr[i]) | |
263 | PRINTCHAR (ptr[i++]); | |
264 | } | |
265 | ||
266 | /* Print the contents of a string STRING using PRINTCHARFUN. | |
267 | It isn't safe to use strout, because printing one char can relocate. */ | |
268 | ||
269 | print_string (string, printcharfun) | |
270 | Lisp_Object string; | |
271 | Lisp_Object printcharfun; | |
272 | { | |
273 | if (EQ (printcharfun, Qnil) || EQ (printcharfun, Qt)) | |
274 | /* In predictable cases, strout is safe: output to buffer or screen. */ | |
275 | strout (XSTRING (string)->data, XSTRING (string)->size, printcharfun); | |
276 | else | |
277 | { | |
278 | /* Otherwise, fetch the string address for each character. */ | |
279 | int i; | |
280 | int size = XSTRING (string)->size; | |
281 | struct gcpro gcpro1; | |
282 | GCPRO1 (string); | |
283 | for (i = 0; i < size; i++) | |
284 | PRINTCHAR (XSTRING (string)->data[i]); | |
285 | UNGCPRO; | |
286 | } | |
287 | } | |
288 | \f | |
289 | DEFUN ("write-char", Fwrite_char, Swrite_char, 1, 2, 0, | |
290 | "Output character CHAR to stream STREAM.\n\ | |
291 | STREAM defaults to the value of `standard-output' (which see).") | |
292 | (ch, printcharfun) | |
293 | Lisp_Object ch, printcharfun; | |
294 | { | |
295 | struct buffer *old = current_buffer; | |
296 | int old_point = -1; | |
297 | int start_point; | |
298 | Lisp_Object original; | |
299 | ||
300 | if (NULL (printcharfun)) | |
301 | printcharfun = Vstandard_output; | |
302 | CHECK_NUMBER (ch, 0); | |
303 | PRINTPREPARE; | |
304 | PRINTCHAR (XINT (ch)); | |
305 | PRINTFINISH; | |
306 | return ch; | |
307 | } | |
308 | ||
309 | /* Used from outside of print.c to print a block of SIZE chars at DATA | |
310 | on the default output stream. | |
311 | Do not use this on the contents of a Lisp string. */ | |
312 | ||
313 | write_string (data, size) | |
314 | char *data; | |
315 | int size; | |
316 | { | |
317 | struct buffer *old = current_buffer; | |
318 | Lisp_Object printcharfun; | |
319 | int old_point = -1; | |
320 | int start_point; | |
321 | Lisp_Object original; | |
322 | ||
323 | printcharfun = Vstandard_output; | |
324 | ||
325 | PRINTPREPARE; | |
326 | strout (data, size, printcharfun); | |
327 | PRINTFINISH; | |
328 | } | |
329 | ||
330 | /* Used from outside of print.c to print a block of SIZE chars at DATA | |
331 | on a specified stream PRINTCHARFUN. | |
332 | Do not use this on the contents of a Lisp string. */ | |
333 | ||
334 | write_string_1 (data, size, printcharfun) | |
335 | char *data; | |
336 | int size; | |
337 | Lisp_Object printcharfun; | |
338 | { | |
339 | struct buffer *old = current_buffer; | |
340 | int old_point = -1; | |
341 | int start_point; | |
342 | Lisp_Object original; | |
343 | ||
344 | PRINTPREPARE; | |
345 | strout (data, size, printcharfun); | |
346 | PRINTFINISH; | |
347 | } | |
348 | ||
349 | ||
350 | #ifndef standalone | |
351 | ||
352 | void | |
353 | temp_output_buffer_setup (bufname) | |
354 | char *bufname; | |
355 | { | |
356 | register struct buffer *old = current_buffer; | |
357 | register Lisp_Object buf; | |
358 | ||
359 | Fset_buffer (Fget_buffer_create (build_string (bufname))); | |
360 | ||
361 | current_buffer->read_only = Qnil; | |
362 | Ferase_buffer (); | |
363 | ||
364 | XSET (buf, Lisp_Buffer, current_buffer); | |
365 | specbind (Qstandard_output, buf); | |
366 | ||
367 | set_buffer_internal (old); | |
368 | } | |
369 | ||
370 | Lisp_Object | |
371 | internal_with_output_to_temp_buffer (bufname, function, args) | |
372 | char *bufname; | |
373 | Lisp_Object (*function) (); | |
374 | Lisp_Object args; | |
375 | { | |
376 | int count = specpdl_ptr - specpdl; | |
377 | Lisp_Object buf, val; | |
378 | ||
379 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); | |
380 | temp_output_buffer_setup (bufname); | |
381 | buf = Vstandard_output; | |
382 | ||
383 | val = (*function) (args); | |
384 | ||
385 | temp_output_buffer_show (buf); | |
386 | ||
387 | return unbind_to (count, val); | |
388 | } | |
389 | ||
390 | DEFUN ("with-output-to-temp-buffer", Fwith_output_to_temp_buffer, Swith_output_to_temp_buffer, | |
391 | 1, UNEVALLED, 0, | |
392 | "Bind `standard-output' to buffer BUFNAME, eval BODY, then show that buffer.\n\ | |
393 | The buffer is cleared out initially, and marked as unmodified when done.\n\ | |
394 | All output done by BODY is inserted in that buffer by default.\n\ | |
395 | The buffer is displayed in another window, but not selected.\n\ | |
396 | The value of the last form in BODY is returned.\n\ | |
397 | If BODY does not finish normally, the buffer BUFNAME is not displayed.\n\n\ | |
398 | If variable `temp-buffer-show-hook' is non-nil, call it at the end\n\ | |
399 | to get the buffer displayed. It gets one argument, the buffer to display.") | |
400 | (args) | |
401 | Lisp_Object args; | |
402 | { | |
403 | struct gcpro gcpro1; | |
404 | Lisp_Object name; | |
405 | int count = specpdl_ptr - specpdl; | |
406 | Lisp_Object buf, val; | |
407 | ||
408 | GCPRO1(args); | |
409 | name = Feval (Fcar (args)); | |
410 | UNGCPRO; | |
411 | ||
412 | CHECK_STRING (name, 0); | |
413 | temp_output_buffer_setup (XSTRING (name)->data); | |
414 | buf = Vstandard_output; | |
415 | ||
416 | val = Fprogn (Fcdr (args)); | |
417 | ||
418 | temp_output_buffer_show (buf); | |
419 | ||
420 | return unbind_to (count, val); | |
421 | } | |
422 | #endif /* not standalone */ | |
423 | \f | |
424 | static void print (); | |
425 | ||
426 | DEFUN ("terpri", Fterpri, Sterpri, 0, 1, 0, | |
427 | "Output a newline to STREAM.\n\ | |
428 | If STREAM is omitted or nil, the value of `standard-output' is used.") | |
429 | (printcharfun) | |
430 | Lisp_Object printcharfun; | |
431 | { | |
432 | struct buffer *old = current_buffer; | |
433 | int old_point = -1; | |
434 | int start_point; | |
435 | Lisp_Object original; | |
436 | ||
437 | if (NULL (printcharfun)) | |
438 | printcharfun = Vstandard_output; | |
439 | PRINTPREPARE; | |
440 | PRINTCHAR ('\n'); | |
441 | PRINTFINISH; | |
442 | return Qt; | |
443 | } | |
444 | ||
445 | DEFUN ("prin1", Fprin1, Sprin1, 1, 2, 0, | |
446 | "Output the printed representation of OBJECT, any Lisp object.\n\ | |
447 | Quoting characters are printed when needed to make output that `read'\n\ | |
448 | can handle, whenever this is possible.\n\ | |
449 | Output stream is STREAM, or value of `standard-output' (which see).") | |
450 | (obj, printcharfun) | |
451 | Lisp_Object obj, printcharfun; | |
452 | { | |
453 | struct buffer *old = current_buffer; | |
454 | int old_point = -1; | |
455 | int start_point; | |
456 | Lisp_Object original; | |
457 | ||
458 | #ifdef MAX_PRINT_CHARS | |
459 | max_print = 0; | |
460 | #endif /* MAX_PRINT_CHARS */ | |
461 | if (NULL (printcharfun)) | |
462 | printcharfun = Vstandard_output; | |
463 | PRINTPREPARE; | |
464 | print_depth = 0; | |
465 | print (obj, printcharfun, 1); | |
466 | PRINTFINISH; | |
467 | return obj; | |
468 | } | |
469 | ||
470 | /* a buffer which is used to hold output being built by prin1-to-string */ | |
471 | Lisp_Object Vprin1_to_string_buffer; | |
472 | ||
473 | DEFUN ("prin1-to-string", Fprin1_to_string, Sprin1_to_string, 1, 2, 0, | |
474 | "Return a string containing the printed representation of OBJECT,\n\ | |
475 | any Lisp object. Quoting characters are used when needed to make output\n\ | |
476 | that `read' can handle, whenever this is possible, unless the optional\n\ | |
477 | second argument NOESCAPE is non-nil.") | |
478 | (obj, noescape) | |
479 | Lisp_Object obj, noescape; | |
480 | { | |
481 | struct buffer *old = current_buffer; | |
482 | int old_point = -1; | |
483 | int start_point; | |
484 | Lisp_Object original, printcharfun; | |
485 | struct gcpro gcpro1; | |
486 | ||
487 | printcharfun = Vprin1_to_string_buffer; | |
488 | PRINTPREPARE; | |
489 | print_depth = 0; | |
490 | print (obj, printcharfun, NULL (noescape)); | |
491 | /* Make Vprin1_to_string_buffer be the default buffer after PRINTFINSH */ | |
492 | PRINTFINISH; | |
493 | set_buffer_internal (XBUFFER (Vprin1_to_string_buffer)); | |
494 | obj = Fbuffer_string (); | |
495 | ||
496 | GCPRO1 (obj); | |
497 | Ferase_buffer (); | |
498 | set_buffer_internal (old); | |
499 | UNGCPRO; | |
500 | ||
501 | return obj; | |
502 | } | |
503 | ||
504 | DEFUN ("princ", Fprinc, Sprinc, 1, 2, 0, | |
505 | "Output the printed representation of OBJECT, any Lisp object.\n\ | |
506 | No quoting characters are used; no delimiters are printed around\n\ | |
507 | the contents of strings.\n\ | |
508 | Output stream is STREAM, or value of standard-output (which see).") | |
509 | (obj, printcharfun) | |
510 | Lisp_Object obj, printcharfun; | |
511 | { | |
512 | struct buffer *old = current_buffer; | |
513 | int old_point = -1; | |
514 | int start_point; | |
515 | Lisp_Object original; | |
516 | ||
517 | if (NULL (printcharfun)) | |
518 | printcharfun = Vstandard_output; | |
519 | PRINTPREPARE; | |
520 | print_depth = 0; | |
521 | print (obj, printcharfun, 0); | |
522 | PRINTFINISH; | |
523 | return obj; | |
524 | } | |
525 | ||
526 | DEFUN ("print", Fprint, Sprint, 1, 2, 0, | |
527 | "Output the printed representation of OBJECT, with newlines around it.\n\ | |
528 | Quoting characters are printed when needed to make output that `read'\n\ | |
529 | can handle, whenever this is possible.\n\ | |
530 | Output stream is STREAM, or value of `standard-output' (which see).") | |
531 | (obj, printcharfun) | |
532 | Lisp_Object obj, printcharfun; | |
533 | { | |
534 | struct buffer *old = current_buffer; | |
535 | int old_point = -1; | |
536 | int start_point; | |
537 | Lisp_Object original; | |
538 | struct gcpro gcpro1; | |
539 | ||
540 | #ifdef MAX_PRINT_CHARS | |
541 | print_chars = 0; | |
542 | max_print = MAX_PRINT_CHARS; | |
543 | #endif /* MAX_PRINT_CHARS */ | |
544 | if (NULL (printcharfun)) | |
545 | printcharfun = Vstandard_output; | |
546 | GCPRO1 (obj); | |
547 | PRINTPREPARE; | |
548 | print_depth = 0; | |
549 | PRINTCHAR ('\n'); | |
550 | print (obj, printcharfun, 1); | |
551 | PRINTCHAR ('\n'); | |
552 | PRINTFINISH; | |
553 | #ifdef MAX_PRINT_CHARS | |
554 | max_print = 0; | |
555 | print_chars = 0; | |
556 | #endif /* MAX_PRINT_CHARS */ | |
557 | UNGCPRO; | |
558 | return obj; | |
559 | } | |
560 | ||
561 | /* The subroutine object for external-debugging-output is kept here | |
562 | for the convenience of the debugger. */ | |
563 | Lisp_Object Qexternal_debugging_output; | |
564 | ||
565 | DEFUN ("external-debugging-output", | |
566 | Fexternal_debugging_output, Sexternal_debugging_output, | |
567 | 1, 1, 0, "Write CHARACTER to stderr.\n\ | |
568 | You can call print while debugging emacs, and pass it this function\n\ | |
569 | to make it write to the debugging output.\n") | |
570 | (Lisp_Object character) | |
571 | { | |
572 | CHECK_NUMBER (character, 0); | |
573 | putc (XINT (character), stderr); | |
574 | ||
575 | return character; | |
576 | } | |
577 | \f | |
578 | #ifdef LISP_FLOAT_TYPE | |
579 | ||
580 | void | |
581 | float_to_string (buf, data) | |
582 | char *buf; | |
583 | /* | |
584 | * This buffer should be at least as large as the max string size of the | |
585 | * largest float, printed in the biggest notation. This is undoubtably | |
586 | * 20d float_output_format, with the negative of the C-constant "HUGE" | |
587 | * from <math.h>. | |
588 | * | |
589 | * On the vax the worst case is -1e38 in 20d format which takes 61 bytes. | |
590 | * | |
591 | * I assume that IEEE-754 format numbers can take 329 bytes for the worst | |
592 | * case of -1e307 in 20d float_output_format. What is one to do (short of | |
593 | * re-writing _doprnt to be more sane)? | |
594 | * -wsr | |
595 | */ | |
596 | double data; | |
597 | { | |
598 | register unsigned char *cp, c; | |
599 | register int width; | |
600 | ||
601 | if (NULL (Vfloat_output_format) | |
602 | || XTYPE (Vfloat_output_format) != Lisp_String) | |
603 | lose: | |
604 | sprintf (buf, "%.20g", data); | |
605 | else /* oink oink */ | |
606 | { | |
607 | /* Check that the spec we have is fully valid. | |
608 | This means not only valid for printf, | |
609 | but meant for floats, and reasonable. */ | |
610 | cp = XSTRING (Vfloat_output_format)->data; | |
611 | ||
612 | if (cp[0] != '%') | |
613 | goto lose; | |
614 | if (cp[1] != '.') | |
615 | goto lose; | |
616 | ||
617 | cp += 2; | |
618 | for (width = 0; | |
619 | ((c = *cp) >= '0' && c <= '9'); | |
620 | cp++) | |
621 | { | |
622 | width *= 10; | |
623 | width += c - '0'; | |
624 | } | |
625 | ||
626 | if (*cp != 'e' && *cp != 'f' && *cp != 'g') | |
627 | goto lose; | |
628 | ||
629 | if (width < (*cp != 'e') || width > DBL_DIG) | |
630 | goto lose; | |
631 | ||
632 | if (cp[1] != 0) | |
633 | goto lose; | |
634 | ||
635 | sprintf (buf, XSTRING (Vfloat_output_format)->data, data); | |
636 | } | |
637 | } | |
638 | #endif /* LISP_FLOAT_TYPE */ | |
639 | \f | |
640 | static void | |
641 | print (obj, printcharfun, escapeflag) | |
642 | #ifndef RTPC_REGISTER_BUG | |
643 | register Lisp_Object obj; | |
644 | #else | |
645 | Lisp_Object obj; | |
646 | #endif | |
647 | register Lisp_Object printcharfun; | |
648 | int escapeflag; | |
649 | { | |
650 | char buf[30]; | |
651 | ||
652 | QUIT; | |
653 | ||
654 | print_depth++; | |
655 | ||
656 | if (print_depth > 200) | |
657 | error ("Apparently circular structure being printed"); | |
658 | #ifdef MAX_PRINT_CHARS | |
659 | if (max_print && print_chars > max_print) | |
660 | { | |
661 | PRINTCHAR ('\n'); | |
662 | print_chars = 0; | |
663 | } | |
664 | #endif /* MAX_PRINT_CHARS */ | |
665 | ||
666 | #ifdef SWITCH_ENUM_BUG | |
667 | switch ((int) XTYPE (obj)) | |
668 | #else | |
669 | switch (XTYPE (obj)) | |
670 | #endif | |
671 | { | |
672 | default: | |
673 | /* We're in trouble if this happens! | |
674 | Probably should just abort () */ | |
675 | strout ("#<EMACS BUG: INVALID DATATYPE ", -1, printcharfun); | |
676 | sprintf (buf, "(#o%3o)", (int) XTYPE (obj)); | |
677 | strout (buf, -1, printcharfun); | |
678 | strout (" Save your buffers immediately and please report this bug>", | |
679 | -1, printcharfun); | |
680 | break; | |
681 | ||
682 | #ifdef LISP_FLOAT_TYPE | |
683 | case Lisp_Float: | |
684 | { | |
685 | char pigbuf[350]; /* see comments in float_to_string */ | |
686 | ||
687 | float_to_string (pigbuf, XFLOAT(obj)->data); | |
688 | strout (pigbuf, -1, printcharfun); | |
689 | } | |
690 | break; | |
691 | #endif /* LISP_FLOAT_TYPE */ | |
692 | ||
693 | case Lisp_Int: | |
694 | sprintf (buf, "%d", XINT (obj)); | |
695 | strout (buf, -1, printcharfun); | |
696 | break; | |
697 | ||
698 | case Lisp_String: | |
699 | if (!escapeflag) | |
700 | print_string (obj, printcharfun); | |
701 | else | |
702 | { | |
703 | register int i; | |
704 | register unsigned char c; | |
705 | Lisp_Object obj1; | |
706 | struct gcpro gcpro1; | |
707 | ||
708 | /* You can't gcpro register variables, so copy obj to a | |
709 | non-register variable so we can gcpro it without | |
710 | making it non-register. */ | |
711 | obj1 = obj; | |
712 | GCPRO1 (obj1); | |
713 | ||
714 | PRINTCHAR ('\"'); | |
715 | for (i = 0; i < XSTRING (obj)->size; i++) | |
716 | { | |
717 | QUIT; | |
718 | c = XSTRING (obj)->data[i]; | |
719 | if (c == '\n' && print_escape_newlines) | |
720 | { | |
721 | PRINTCHAR ('\\'); | |
722 | PRINTCHAR ('n'); | |
723 | } | |
724 | else | |
725 | { | |
726 | if (c == '\"' || c == '\\') | |
727 | PRINTCHAR ('\\'); | |
728 | PRINTCHAR (c); | |
729 | } | |
730 | } | |
731 | PRINTCHAR ('\"'); | |
732 | UNGCPRO; | |
733 | } | |
734 | break; | |
735 | ||
736 | case Lisp_Symbol: | |
737 | { | |
738 | register int confusing; | |
739 | register unsigned char *p = XSYMBOL (obj)->name->data; | |
740 | register unsigned char *end = p + XSYMBOL (obj)->name->size; | |
741 | register unsigned char c; | |
742 | ||
743 | if (p != end && (*p == '-' || *p == '+')) p++; | |
744 | if (p == end) | |
745 | confusing = 0; | |
746 | else | |
747 | { | |
748 | while (p != end && *p >= '0' && *p <= '9') | |
749 | p++; | |
750 | confusing = (end == p); | |
751 | } | |
752 | ||
753 | p = XSYMBOL (obj)->name->data; | |
754 | while (p != end) | |
755 | { | |
756 | QUIT; | |
757 | c = *p++; | |
758 | if (escapeflag) | |
759 | { | |
760 | if (c == '\"' || c == '\\' || c == '\'' || c == ';' || c == '#' || | |
761 | c == '(' || c == ')' || c == ',' || c =='.' || c == '`' || | |
762 | c == '[' || c == ']' || c == '?' || c <= 040 || confusing) | |
763 | PRINTCHAR ('\\'), confusing = 0; | |
764 | } | |
765 | PRINTCHAR (c); | |
766 | } | |
767 | } | |
768 | break; | |
769 | ||
770 | case Lisp_Cons: | |
771 | /* If deeper than spec'd depth, print placeholder. */ | |
772 | if (XTYPE (Vprint_level) == Lisp_Int | |
773 | && print_depth > XINT (Vprint_level)) | |
774 | { | |
775 | strout ("...", -1, printcharfun); | |
776 | break; | |
777 | } | |
778 | ||
779 | PRINTCHAR ('('); | |
780 | { | |
781 | register int i = 0; | |
782 | register int max = 0; | |
783 | ||
784 | if (XTYPE (Vprint_length) == Lisp_Int) | |
785 | max = XINT (Vprint_length); | |
786 | while (CONSP (obj)) | |
787 | { | |
788 | if (i++) | |
789 | PRINTCHAR (' '); | |
790 | if (max && i > max) | |
791 | { | |
792 | strout ("...", 3, printcharfun); | |
793 | break; | |
794 | } | |
795 | print (Fcar (obj), printcharfun, escapeflag); | |
796 | obj = Fcdr (obj); | |
797 | } | |
798 | } | |
799 | if (!NULL (obj) && !CONSP (obj)) | |
800 | { | |
801 | strout (" . ", 3, printcharfun); | |
802 | print (obj, printcharfun, escapeflag); | |
803 | } | |
804 | PRINTCHAR (')'); | |
805 | break; | |
806 | ||
807 | case Lisp_Compiled: | |
200f684e | 808 | strout ("#", -1, printcharfun); |
38010d50 JB |
809 | case Lisp_Vector: |
810 | PRINTCHAR ('['); | |
811 | { | |
812 | register int i; | |
813 | register Lisp_Object tem; | |
814 | for (i = 0; i < XVECTOR (obj)->size; i++) | |
815 | { | |
816 | if (i) PRINTCHAR (' '); | |
817 | tem = XVECTOR (obj)->contents[i]; | |
818 | print (tem, printcharfun, escapeflag); | |
819 | } | |
820 | } | |
821 | PRINTCHAR (']'); | |
38010d50 JB |
822 | break; |
823 | ||
824 | #ifndef standalone | |
825 | case Lisp_Buffer: | |
826 | if (NULL (XBUFFER (obj)->name)) | |
827 | strout ("#<killed buffer>", -1, printcharfun); | |
828 | else if (escapeflag) | |
829 | { | |
830 | strout ("#<buffer ", -1, printcharfun); | |
831 | print_string (XBUFFER (obj)->name, printcharfun); | |
832 | PRINTCHAR ('>'); | |
833 | } | |
834 | else | |
835 | print_string (XBUFFER (obj)->name, printcharfun); | |
836 | break; | |
837 | ||
838 | case Lisp_Process: | |
839 | if (escapeflag) | |
840 | { | |
841 | strout ("#<process ", -1, printcharfun); | |
842 | print_string (XPROCESS (obj)->name, printcharfun); | |
843 | PRINTCHAR ('>'); | |
844 | } | |
845 | else | |
846 | print_string (XPROCESS (obj)->name, printcharfun); | |
847 | break; | |
848 | ||
849 | case Lisp_Window: | |
850 | strout ("#<window ", -1, printcharfun); | |
851 | sprintf (buf, "%d", XFASTINT (XWINDOW (obj)->sequence_number)); | |
852 | strout (buf, -1, printcharfun); | |
853 | if (!NULL (XWINDOW (obj)->buffer)) | |
854 | { | |
855 | strout (" on ", -1, printcharfun); | |
856 | print_string (XBUFFER (XWINDOW (obj)->buffer)->name, printcharfun); | |
857 | } | |
858 | PRINTCHAR ('>'); | |
859 | break; | |
860 | ||
861 | case Lisp_Window_Configuration: | |
862 | strout ("#<window-configuration>", -1, printcharfun); | |
863 | break; | |
864 | ||
865 | #ifdef MULTI_SCREEN | |
866 | case Lisp_Screen: | |
867 | strout ("#<screen ", -1, printcharfun); | |
868 | print_string (XSCREEN (obj)->name, printcharfun); | |
869 | sprintf (buf, " 0x%x", XFASTINT (XSCREEN (obj))); | |
870 | strout (buf, -1, printcharfun); | |
871 | strout (">", -1, printcharfun); | |
872 | break; | |
873 | #endif /* MULTI_SCREEN */ | |
874 | ||
875 | case Lisp_Marker: | |
876 | strout ("#<marker ", -1, printcharfun); | |
877 | if (!(XMARKER (obj)->buffer)) | |
878 | strout ("in no buffer", -1, printcharfun); | |
879 | else | |
880 | { | |
881 | sprintf (buf, "at %d", marker_position (obj)); | |
882 | strout (buf, -1, printcharfun); | |
883 | strout (" in ", -1, printcharfun); | |
884 | print_string (XMARKER (obj)->buffer->name, printcharfun); | |
885 | } | |
886 | PRINTCHAR ('>'); | |
887 | break; | |
888 | #endif /* standalone */ | |
889 | ||
890 | case Lisp_Subr: | |
891 | strout ("#<subr ", -1, printcharfun); | |
892 | strout (XSUBR (obj)->symbol_name, -1, printcharfun); | |
893 | PRINTCHAR ('>'); | |
894 | break; | |
895 | } | |
896 | ||
897 | print_depth--; | |
898 | } | |
899 | \f | |
900 | void | |
901 | syms_of_print () | |
902 | { | |
903 | staticpro (&Qprint_escape_newlines); | |
904 | Qprint_escape_newlines = intern ("print-escape-newlines"); | |
905 | ||
906 | DEFVAR_LISP ("standard-output", &Vstandard_output, | |
907 | "Output stream `print' uses by default for outputting a character.\n\ | |
908 | This may be any function of one argument.\n\ | |
909 | It may also be a buffer (output is inserted before point)\n\ | |
910 | or a marker (output is inserted and the marker is advanced)\n\ | |
911 | or the symbol t (output appears in the minibuffer line)."); | |
912 | Vstandard_output = Qt; | |
913 | Qstandard_output = intern ("standard-output"); | |
914 | staticpro (&Qstandard_output); | |
915 | ||
916 | #ifdef LISP_FLOAT_TYPE | |
917 | DEFVAR_LISP ("float-output-format", &Vfloat_output_format, | |
918 | "The format descriptor string that lisp uses to print floats.\n\ | |
919 | This is a %-spec like those accepted by `printf' in C,\n\ | |
920 | but with some restrictions. It must start with the two characters `%.'.\n\ | |
921 | After that comes an integer precision specification,\n\ | |
922 | and then a letter which controls the format.\n\ | |
923 | The letters allowed are `e', `f' and `g'.\n\ | |
924 | Use `e' for exponential notation \"DIG.DIGITSeEXPT\"\n\ | |
925 | Use `f' for decimal point notation \"DIGITS.DIGITS\".\n\ | |
926 | Use `g' to choose the shorter of those two formats for the number at hand.\n\ | |
927 | The precision in any of these cases is the number of digits following\n\ | |
928 | the decimal point. With `f', a precision of 0 means to omit the\n\ | |
929 | decimal point. 0 is not allowed with `f' or `g'.\n\n\ | |
930 | A value of nil means to use `%.20g'."); | |
931 | Vfloat_output_format = Qnil; | |
932 | Qfloat_output_format = intern ("float-output-format"); | |
933 | staticpro (&Qfloat_output_format); | |
934 | #endif /* LISP_FLOAT_TYPE */ | |
935 | ||
936 | DEFVAR_LISP ("print-length", &Vprint_length, | |
937 | "Maximum length of list to print before abbreviating.\ | |
938 | A value of nil means no limit."); | |
939 | Vprint_length = Qnil; | |
940 | ||
941 | DEFVAR_LISP ("print-level", &Vprint_level, | |
942 | "Maximum depth of list nesting to print before abbreviating.\ | |
943 | A value of nil means no limit."); | |
944 | Vprint_level = Qnil; | |
945 | ||
946 | DEFVAR_BOOL ("print-escape-newlines", &print_escape_newlines, | |
947 | "Non-nil means print newlines in strings as backslash-n."); | |
948 | print_escape_newlines = 0; | |
949 | ||
950 | /* prin1_to_string_buffer initialized in init_buffer_once in buffer.c */ | |
951 | staticpro (&Vprin1_to_string_buffer); | |
952 | ||
953 | defsubr (&Sprin1); | |
954 | defsubr (&Sprin1_to_string); | |
955 | defsubr (&Sprinc); | |
956 | defsubr (&Sprint); | |
957 | defsubr (&Sterpri); | |
958 | defsubr (&Swrite_char); | |
959 | defsubr (&Sexternal_debugging_output); | |
960 | ||
961 | Qexternal_debugging_output = intern ("external-debugging-output"); | |
962 | staticpro (&Qexternal_debugging_output); | |
963 | ||
964 | #ifndef standalone | |
965 | defsubr (&Swith_output_to_temp_buffer); | |
966 | #endif /* not standalone */ | |
967 | } |