| 1 | /* Lisp object printing and output streams. |
| 2 | Copyright (C) 1985, 86, 88, 93, 94, 95, 97, 1998 |
| 3 | Free Software Foundation, Inc. |
| 4 | |
| 5 | This file is part of GNU Emacs. |
| 6 | |
| 7 | GNU Emacs is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 2, or (at your option) |
| 10 | any later version. |
| 11 | |
| 12 | GNU Emacs is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with GNU Emacs; see the file COPYING. If not, write to |
| 19 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
| 20 | Boston, MA 02111-1307, USA. */ |
| 21 | |
| 22 | |
| 23 | #include <config.h> |
| 24 | #include <stdio.h> |
| 25 | #include "lisp.h" |
| 26 | |
| 27 | #ifndef standalone |
| 28 | #include "buffer.h" |
| 29 | #include "charset.h" |
| 30 | #include "frame.h" |
| 31 | #include "window.h" |
| 32 | #include "process.h" |
| 33 | #include "dispextern.h" |
| 34 | #include "termchar.h" |
| 35 | #include "keyboard.h" |
| 36 | #endif /* not standalone */ |
| 37 | |
| 38 | #ifdef USE_TEXT_PROPERTIES |
| 39 | #include "intervals.h" |
| 40 | #endif |
| 41 | |
| 42 | Lisp_Object Vstandard_output, Qstandard_output; |
| 43 | |
| 44 | /* These are used to print like we read. */ |
| 45 | extern Lisp_Object Qbackquote, Qcomma, Qcomma_at, Qcomma_dot, Qfunction; |
| 46 | |
| 47 | #ifdef LISP_FLOAT_TYPE |
| 48 | Lisp_Object Vfloat_output_format, Qfloat_output_format; |
| 49 | |
| 50 | /* Work around a problem that happens because math.h on hpux 7 |
| 51 | defines two static variables--which, in Emacs, are not really static, |
| 52 | because `static' is defined as nothing. The problem is that they are |
| 53 | defined both here and in lread.c. |
| 54 | These macros prevent the name conflict. */ |
| 55 | #if defined (HPUX) && !defined (HPUX8) |
| 56 | #define _MAXLDBL print_maxldbl |
| 57 | #define _NMAXLDBL print_nmaxldbl |
| 58 | #endif |
| 59 | |
| 60 | #include <math.h> |
| 61 | |
| 62 | #if STDC_HEADERS |
| 63 | #include <float.h> |
| 64 | #include <stdlib.h> |
| 65 | #endif |
| 66 | |
| 67 | /* Default to values appropriate for IEEE floating point. */ |
| 68 | #ifndef FLT_RADIX |
| 69 | #define FLT_RADIX 2 |
| 70 | #endif |
| 71 | #ifndef DBL_MANT_DIG |
| 72 | #define DBL_MANT_DIG 53 |
| 73 | #endif |
| 74 | #ifndef DBL_DIG |
| 75 | #define DBL_DIG 15 |
| 76 | #endif |
| 77 | #ifndef DBL_MIN |
| 78 | #define DBL_MIN 2.2250738585072014e-308 |
| 79 | #endif |
| 80 | |
| 81 | #ifdef DBL_MIN_REPLACEMENT |
| 82 | #undef DBL_MIN |
| 83 | #define DBL_MIN DBL_MIN_REPLACEMENT |
| 84 | #endif |
| 85 | |
| 86 | /* Define DOUBLE_DIGITS_BOUND, an upper bound on the number of decimal digits |
| 87 | needed to express a float without losing information. |
| 88 | The general-case formula is valid for the usual case, IEEE floating point, |
| 89 | but many compilers can't optimize the formula to an integer constant, |
| 90 | so make a special case for it. */ |
| 91 | #if FLT_RADIX == 2 && DBL_MANT_DIG == 53 |
| 92 | #define DOUBLE_DIGITS_BOUND 17 /* IEEE floating point */ |
| 93 | #else |
| 94 | #define DOUBLE_DIGITS_BOUND ((int) ceil (log10 (pow (FLT_RADIX, DBL_MANT_DIG)))) |
| 95 | #endif |
| 96 | |
| 97 | #endif /* LISP_FLOAT_TYPE */ |
| 98 | |
| 99 | /* Avoid actual stack overflow in print. */ |
| 100 | int print_depth; |
| 101 | |
| 102 | /* Detect most circularities to print finite output. */ |
| 103 | #define PRINT_CIRCLE 200 |
| 104 | Lisp_Object being_printed[PRINT_CIRCLE]; |
| 105 | |
| 106 | /* When printing into a buffer, first we put the text in this |
| 107 | block, then insert it all at once. */ |
| 108 | char *print_buffer; |
| 109 | |
| 110 | /* Size allocated in print_buffer. */ |
| 111 | int print_buffer_size; |
| 112 | /* Chars stored in print_buffer. */ |
| 113 | int print_buffer_pos; |
| 114 | /* Bytes stored in print_buffer. */ |
| 115 | int print_buffer_pos_byte; |
| 116 | |
| 117 | /* Maximum length of list to print in full; noninteger means |
| 118 | effectively infinity */ |
| 119 | |
| 120 | Lisp_Object Vprint_length; |
| 121 | |
| 122 | /* Maximum depth of list to print in full; noninteger means |
| 123 | effectively infinity. */ |
| 124 | |
| 125 | Lisp_Object Vprint_level; |
| 126 | |
| 127 | /* Nonzero means print newlines in strings as \n. */ |
| 128 | |
| 129 | int print_escape_newlines; |
| 130 | |
| 131 | Lisp_Object Qprint_escape_newlines; |
| 132 | |
| 133 | /* Nonzero means print (quote foo) forms as 'foo, etc. */ |
| 134 | |
| 135 | int print_quoted; |
| 136 | |
| 137 | /* Non-nil means print #: before uninterned symbols. |
| 138 | Neither t nor nil means so that and don't clear Vprint_gensym_alist |
| 139 | on entry to and exit from print functions. */ |
| 140 | |
| 141 | Lisp_Object Vprint_gensym; |
| 142 | |
| 143 | /* Association list of certain objects that are `eq' in the form being |
| 144 | printed and which should be `eq' when read back in, using the #n=object |
| 145 | and #n# reader forms. Each element has the form (object . n). */ |
| 146 | |
| 147 | Lisp_Object Vprint_gensym_alist; |
| 148 | |
| 149 | /* Nonzero means print newline to stdout before next minibuffer message. |
| 150 | Defined in xdisp.c */ |
| 151 | |
| 152 | extern int noninteractive_need_newline; |
| 153 | |
| 154 | extern int minibuffer_auto_raise; |
| 155 | |
| 156 | #ifdef MAX_PRINT_CHARS |
| 157 | static int print_chars; |
| 158 | static int max_print; |
| 159 | #endif /* MAX_PRINT_CHARS */ |
| 160 | |
| 161 | void print_interval (); |
| 162 | \f |
| 163 | #if 0 |
| 164 | /* Convert between chars and GLYPHs */ |
| 165 | |
| 166 | int |
| 167 | glyphlen (glyphs) |
| 168 | register GLYPH *glyphs; |
| 169 | { |
| 170 | register int i = 0; |
| 171 | |
| 172 | while (glyphs[i]) |
| 173 | i++; |
| 174 | return i; |
| 175 | } |
| 176 | |
| 177 | void |
| 178 | str_to_glyph_cpy (str, glyphs) |
| 179 | char *str; |
| 180 | GLYPH *glyphs; |
| 181 | { |
| 182 | register GLYPH *gp = glyphs; |
| 183 | register char *cp = str; |
| 184 | |
| 185 | while (*cp) |
| 186 | *gp++ = *cp++; |
| 187 | } |
| 188 | |
| 189 | void |
| 190 | str_to_glyph_ncpy (str, glyphs, n) |
| 191 | char *str; |
| 192 | GLYPH *glyphs; |
| 193 | register int n; |
| 194 | { |
| 195 | register GLYPH *gp = glyphs; |
| 196 | register char *cp = str; |
| 197 | |
| 198 | while (n-- > 0) |
| 199 | *gp++ = *cp++; |
| 200 | } |
| 201 | |
| 202 | void |
| 203 | glyph_to_str_cpy (glyphs, str) |
| 204 | GLYPH *glyphs; |
| 205 | char *str; |
| 206 | { |
| 207 | register GLYPH *gp = glyphs; |
| 208 | register char *cp = str; |
| 209 | |
| 210 | while (*gp) |
| 211 | *str++ = *gp++ & 0377; |
| 212 | } |
| 213 | #endif |
| 214 | \f |
| 215 | /* Low level output routines for characters and strings */ |
| 216 | |
| 217 | /* Lisp functions to do output using a stream |
| 218 | must have the stream in a variable called printcharfun |
| 219 | and must start with PRINTPREPARE, end with PRINTFINISH, |
| 220 | and use PRINTDECLARE to declare common variables. |
| 221 | Use PRINTCHAR to output one character, |
| 222 | or call strout to output a block of characters. |
| 223 | */ |
| 224 | |
| 225 | #define PRINTDECLARE \ |
| 226 | struct buffer *old = current_buffer; \ |
| 227 | int old_point = -1, start_point; \ |
| 228 | int old_point_byte, start_point_byte; \ |
| 229 | int specpdl_count = specpdl_ptr - specpdl; \ |
| 230 | int free_print_buffer = 0; \ |
| 231 | Lisp_Object original |
| 232 | |
| 233 | #define PRINTPREPARE \ |
| 234 | original = printcharfun; \ |
| 235 | if (NILP (printcharfun)) printcharfun = Qt; \ |
| 236 | if (BUFFERP (printcharfun)) \ |
| 237 | { \ |
| 238 | if (XBUFFER (printcharfun) != current_buffer) \ |
| 239 | Fset_buffer (printcharfun); \ |
| 240 | printcharfun = Qnil; \ |
| 241 | } \ |
| 242 | if (MARKERP (printcharfun)) \ |
| 243 | { \ |
| 244 | if (!(XMARKER (original)->buffer)) \ |
| 245 | error ("Marker does not point anywhere"); \ |
| 246 | if (XMARKER (original)->buffer != current_buffer) \ |
| 247 | set_buffer_internal (XMARKER (original)->buffer); \ |
| 248 | old_point = PT; \ |
| 249 | old_point_byte = PT_BYTE; \ |
| 250 | SET_PT_BOTH (marker_position (printcharfun), \ |
| 251 | marker_byte_position (printcharfun)); \ |
| 252 | start_point = PT; \ |
| 253 | start_point_byte = PT_BYTE; \ |
| 254 | printcharfun = Qnil; \ |
| 255 | } \ |
| 256 | if (NILP (printcharfun)) \ |
| 257 | { \ |
| 258 | Lisp_Object string; \ |
| 259 | if (print_buffer != 0) \ |
| 260 | { \ |
| 261 | string = make_string_from_bytes (print_buffer, \ |
| 262 | print_buffer_pos, \ |
| 263 | print_buffer_pos_byte); \ |
| 264 | record_unwind_protect (print_unwind, string); \ |
| 265 | } \ |
| 266 | else \ |
| 267 | { \ |
| 268 | print_buffer_size = 1000; \ |
| 269 | print_buffer = (char *) xmalloc (print_buffer_size); \ |
| 270 | free_print_buffer = 1; \ |
| 271 | } \ |
| 272 | print_buffer_pos = 0; \ |
| 273 | print_buffer_pos_byte = 0; \ |
| 274 | } \ |
| 275 | if (!CONSP (Vprint_gensym)) \ |
| 276 | Vprint_gensym_alist = Qnil |
| 277 | |
| 278 | #define PRINTFINISH \ |
| 279 | if (NILP (printcharfun)) \ |
| 280 | insert_1_both (print_buffer, print_buffer_pos, \ |
| 281 | print_buffer_pos_byte, 0, 1, 0); \ |
| 282 | if (free_print_buffer) \ |
| 283 | { \ |
| 284 | xfree (print_buffer); \ |
| 285 | print_buffer = 0; \ |
| 286 | } \ |
| 287 | unbind_to (specpdl_count, Qnil); \ |
| 288 | if (MARKERP (original)) \ |
| 289 | set_marker_both (original, Qnil, PT, PT_BYTE); \ |
| 290 | if (old_point >= 0) \ |
| 291 | SET_PT_BOTH (old_point + (old_point >= start_point \ |
| 292 | ? PT - start_point : 0), \ |
| 293 | old_point_byte + (old_point_byte >= start_point_byte \ |
| 294 | ? PT_BYTE - start_point_byte : 0)); \ |
| 295 | if (old != current_buffer) \ |
| 296 | set_buffer_internal (old); \ |
| 297 | if (!CONSP (Vprint_gensym)) \ |
| 298 | Vprint_gensym_alist = Qnil |
| 299 | |
| 300 | #define PRINTCHAR(ch) printchar (ch, printcharfun) |
| 301 | |
| 302 | /* Nonzero if there is no room to print any more characters |
| 303 | so print might as well return right away. */ |
| 304 | |
| 305 | #define PRINTFULLP() \ |
| 306 | (EQ (printcharfun, Qt) && !noninteractive \ |
| 307 | && printbufidx >= FRAME_WIDTH (XFRAME (WINDOW_FRAME (XWINDOW (minibuf_window))))) |
| 308 | |
| 309 | /* This is used to restore the saved contents of print_buffer |
| 310 | when there is a recursive call to print. */ |
| 311 | static Lisp_Object |
| 312 | print_unwind (saved_text) |
| 313 | Lisp_Object saved_text; |
| 314 | { |
| 315 | bcopy (XSTRING (saved_text)->data, print_buffer, XSTRING (saved_text)->size); |
| 316 | } |
| 317 | |
| 318 | /* Index of first unused element of FRAME_MESSAGE_BUF (mini_frame). */ |
| 319 | static int printbufidx; |
| 320 | |
| 321 | static void |
| 322 | printchar (ch, fun) |
| 323 | unsigned int ch; |
| 324 | Lisp_Object fun; |
| 325 | { |
| 326 | Lisp_Object ch1; |
| 327 | |
| 328 | #ifdef MAX_PRINT_CHARS |
| 329 | if (max_print) |
| 330 | print_chars++; |
| 331 | #endif /* MAX_PRINT_CHARS */ |
| 332 | #ifndef standalone |
| 333 | if (EQ (fun, Qnil)) |
| 334 | { |
| 335 | int len; |
| 336 | unsigned char work[4], *str; |
| 337 | |
| 338 | QUIT; |
| 339 | len = CHAR_STRING (ch, work, str); |
| 340 | if (print_buffer_pos_byte + len >= print_buffer_size) |
| 341 | print_buffer = (char *) xrealloc (print_buffer, |
| 342 | print_buffer_size *= 2); |
| 343 | bcopy (str, print_buffer + print_buffer_pos_byte, len); |
| 344 | print_buffer_pos += 1; |
| 345 | print_buffer_pos_byte += len; |
| 346 | return; |
| 347 | } |
| 348 | |
| 349 | if (EQ (fun, Qt)) |
| 350 | { |
| 351 | FRAME_PTR mini_frame |
| 352 | = XFRAME (WINDOW_FRAME (XWINDOW (minibuf_window))); |
| 353 | unsigned char work[4], *str; |
| 354 | int len = CHAR_STRING (ch, work, str); |
| 355 | |
| 356 | QUIT; |
| 357 | |
| 358 | if (noninteractive) |
| 359 | { |
| 360 | while (len--) |
| 361 | putchar (*str), str++; |
| 362 | noninteractive_need_newline = 1; |
| 363 | return; |
| 364 | } |
| 365 | |
| 366 | if (echo_area_glyphs != FRAME_MESSAGE_BUF (mini_frame) |
| 367 | || !message_buf_print) |
| 368 | { |
| 369 | message_log_maybe_newline (); |
| 370 | echo_area_glyphs = FRAME_MESSAGE_BUF (mini_frame); |
| 371 | printbufidx = 0; |
| 372 | echo_area_glyphs_length = 0; |
| 373 | message_buf_print = 1; |
| 374 | |
| 375 | if (minibuffer_auto_raise) |
| 376 | { |
| 377 | Lisp_Object mini_window; |
| 378 | |
| 379 | /* Get the frame containing the minibuffer |
| 380 | that the selected frame is using. */ |
| 381 | mini_window = FRAME_MINIBUF_WINDOW (selected_frame); |
| 382 | |
| 383 | Fraise_frame (WINDOW_FRAME (XWINDOW (mini_window))); |
| 384 | } |
| 385 | } |
| 386 | |
| 387 | message_dolog (str, len, 0, len > 1); |
| 388 | |
| 389 | /* Convert message to multibyte if we are now adding multibyte text. */ |
| 390 | if (! NILP (current_buffer->enable_multibyte_characters) |
| 391 | && ! message_enable_multibyte |
| 392 | && printbufidx > 0) |
| 393 | { |
| 394 | int size = count_size_as_multibyte (FRAME_MESSAGE_BUF (mini_frame), |
| 395 | printbufidx); |
| 396 | unsigned char *tembuf = (unsigned char *) alloca (size + 1); |
| 397 | copy_text (FRAME_MESSAGE_BUF (mini_frame), tembuf, printbufidx, |
| 398 | 0, 1); |
| 399 | printbufidx = size; |
| 400 | if (printbufidx > FRAME_MESSAGE_BUF_SIZE (mini_frame)) |
| 401 | { |
| 402 | printbufidx = FRAME_MESSAGE_BUF_SIZE (mini_frame); |
| 403 | /* Rewind incomplete multi-byte form. */ |
| 404 | while (printbufidx > 0 && tembuf[printbufidx] >= 0xA0) |
| 405 | printbufidx--; |
| 406 | } |
| 407 | bcopy (tembuf, FRAME_MESSAGE_BUF (mini_frame), printbufidx); |
| 408 | message_enable_multibyte = 1; |
| 409 | } |
| 410 | |
| 411 | if (printbufidx < FRAME_MESSAGE_BUF_SIZE (mini_frame) - len) |
| 412 | bcopy (str, &FRAME_MESSAGE_BUF (mini_frame)[printbufidx], len), |
| 413 | printbufidx += len; |
| 414 | FRAME_MESSAGE_BUF (mini_frame)[printbufidx] = 0; |
| 415 | echo_area_glyphs_length = printbufidx; |
| 416 | |
| 417 | return; |
| 418 | } |
| 419 | #endif /* not standalone */ |
| 420 | |
| 421 | XSETFASTINT (ch1, ch); |
| 422 | call1 (fun, ch1); |
| 423 | } |
| 424 | |
| 425 | static void |
| 426 | strout (ptr, size, size_byte, printcharfun, multibyte) |
| 427 | char *ptr; |
| 428 | int size, size_byte; |
| 429 | Lisp_Object printcharfun; |
| 430 | int multibyte; |
| 431 | { |
| 432 | int i = 0; |
| 433 | |
| 434 | if (size < 0) |
| 435 | size_byte = size = strlen (ptr); |
| 436 | |
| 437 | if (EQ (printcharfun, Qnil)) |
| 438 | { |
| 439 | if (print_buffer_pos_byte + size_byte > print_buffer_size) |
| 440 | { |
| 441 | print_buffer_size = print_buffer_size * 2 + size_byte; |
| 442 | print_buffer = (char *) xrealloc (print_buffer, |
| 443 | print_buffer_size); |
| 444 | } |
| 445 | bcopy (ptr, print_buffer + print_buffer_pos_byte, size_byte); |
| 446 | print_buffer_pos += size; |
| 447 | print_buffer_pos_byte += size_byte; |
| 448 | |
| 449 | #ifdef MAX_PRINT_CHARS |
| 450 | if (max_print) |
| 451 | print_chars += size; |
| 452 | #endif /* MAX_PRINT_CHARS */ |
| 453 | return; |
| 454 | } |
| 455 | if (EQ (printcharfun, Qt)) |
| 456 | { |
| 457 | FRAME_PTR mini_frame |
| 458 | = XFRAME (WINDOW_FRAME (XWINDOW (minibuf_window))); |
| 459 | |
| 460 | QUIT; |
| 461 | |
| 462 | #ifdef MAX_PRINT_CHARS |
| 463 | if (max_print) |
| 464 | print_chars += size; |
| 465 | #endif /* MAX_PRINT_CHARS */ |
| 466 | |
| 467 | if (noninteractive) |
| 468 | { |
| 469 | fwrite (ptr, 1, size_byte, stdout); |
| 470 | noninteractive_need_newline = 1; |
| 471 | return; |
| 472 | } |
| 473 | |
| 474 | if (echo_area_glyphs != FRAME_MESSAGE_BUF (mini_frame) |
| 475 | || !message_buf_print) |
| 476 | { |
| 477 | message_log_maybe_newline (); |
| 478 | echo_area_glyphs = FRAME_MESSAGE_BUF (mini_frame); |
| 479 | printbufidx = 0; |
| 480 | echo_area_glyphs_length = 0; |
| 481 | message_buf_print = 1; |
| 482 | |
| 483 | if (minibuffer_auto_raise) |
| 484 | { |
| 485 | Lisp_Object mini_window; |
| 486 | |
| 487 | /* Get the frame containing the minibuffer |
| 488 | that the selected frame is using. */ |
| 489 | mini_window = FRAME_MINIBUF_WINDOW (selected_frame); |
| 490 | |
| 491 | Fraise_frame (WINDOW_FRAME (XWINDOW (mini_window))); |
| 492 | } |
| 493 | } |
| 494 | |
| 495 | message_dolog (ptr, size_byte, 0, multibyte); |
| 496 | |
| 497 | /* Convert message to multibyte if we are now adding multibyte text. */ |
| 498 | if (multibyte |
| 499 | && ! message_enable_multibyte |
| 500 | && printbufidx > 0) |
| 501 | { |
| 502 | int size = count_size_as_multibyte (FRAME_MESSAGE_BUF (mini_frame), |
| 503 | printbufidx); |
| 504 | unsigned char *tembuf = (unsigned char *) alloca (size + 1); |
| 505 | copy_text (FRAME_MESSAGE_BUF (mini_frame), tembuf, printbufidx, |
| 506 | 0, 1); |
| 507 | printbufidx = size; |
| 508 | if (printbufidx > FRAME_MESSAGE_BUF_SIZE (mini_frame)) |
| 509 | { |
| 510 | printbufidx = FRAME_MESSAGE_BUF_SIZE (mini_frame); |
| 511 | /* Rewind incomplete multi-byte form. */ |
| 512 | while (printbufidx > 0 && tembuf[printbufidx] >= 0xA0) |
| 513 | printbufidx--; |
| 514 | } |
| 515 | |
| 516 | bcopy (tembuf, FRAME_MESSAGE_BUF (mini_frame), printbufidx); |
| 517 | message_enable_multibyte = 1; |
| 518 | } |
| 519 | |
| 520 | /* Compute how much of the new text will fit there. */ |
| 521 | if (size_byte > FRAME_MESSAGE_BUF_SIZE (mini_frame) - printbufidx - 1) |
| 522 | { |
| 523 | size_byte = FRAME_MESSAGE_BUF_SIZE (mini_frame) - printbufidx - 1; |
| 524 | /* Rewind incomplete multi-byte form. */ |
| 525 | while (size_byte && (unsigned char) ptr[size_byte] >= 0xA0) |
| 526 | size_byte--; |
| 527 | } |
| 528 | |
| 529 | /* Put that part of the new text in. */ |
| 530 | bcopy (ptr, &FRAME_MESSAGE_BUF (mini_frame) [printbufidx], size_byte); |
| 531 | printbufidx += size_byte; |
| 532 | FRAME_MESSAGE_BUF (mini_frame) [printbufidx] = 0; |
| 533 | echo_area_glyphs_length = printbufidx; |
| 534 | |
| 535 | return; |
| 536 | } |
| 537 | |
| 538 | i = 0; |
| 539 | if (size == size_byte) |
| 540 | while (i < size_byte) |
| 541 | { |
| 542 | int ch = ptr[i++]; |
| 543 | |
| 544 | PRINTCHAR (ch); |
| 545 | } |
| 546 | else |
| 547 | while (i < size_byte) |
| 548 | { |
| 549 | /* Here, we must convert each multi-byte form to the |
| 550 | corresponding character code before handing it to PRINTCHAR. */ |
| 551 | int len; |
| 552 | int ch = STRING_CHAR_AND_LENGTH (ptr + i, size_byte - i, len); |
| 553 | |
| 554 | PRINTCHAR (ch); |
| 555 | i += len; |
| 556 | } |
| 557 | } |
| 558 | |
| 559 | /* Print the contents of a string STRING using PRINTCHARFUN. |
| 560 | It isn't safe to use strout in many cases, |
| 561 | because printing one char can relocate. */ |
| 562 | |
| 563 | static void |
| 564 | print_string (string, printcharfun) |
| 565 | Lisp_Object string; |
| 566 | Lisp_Object printcharfun; |
| 567 | { |
| 568 | if (EQ (printcharfun, Qt) || NILP (printcharfun)) |
| 569 | /* strout is safe for output to a frame (echo area) or to print_buffer. */ |
| 570 | strout (XSTRING (string)->data, |
| 571 | XSTRING (string)->size, |
| 572 | STRING_BYTES (XSTRING (string)), |
| 573 | printcharfun, STRING_MULTIBYTE (string)); |
| 574 | else |
| 575 | { |
| 576 | /* Otherwise, string may be relocated by printing one char. |
| 577 | So re-fetch the string address for each character. */ |
| 578 | int i; |
| 579 | int size = XSTRING (string)->size; |
| 580 | int size_byte = STRING_BYTES (XSTRING (string)); |
| 581 | struct gcpro gcpro1; |
| 582 | GCPRO1 (string); |
| 583 | if (size == size_byte) |
| 584 | for (i = 0; i < size; i++) |
| 585 | PRINTCHAR (XSTRING (string)->data[i]); |
| 586 | else |
| 587 | for (i = 0; i < size_byte; i++) |
| 588 | { |
| 589 | /* Here, we must convert each multi-byte form to the |
| 590 | corresponding character code before handing it to PRINTCHAR. */ |
| 591 | int len; |
| 592 | int ch = STRING_CHAR_AND_LENGTH (XSTRING (string)->data + i, |
| 593 | size_byte - i, len); |
| 594 | |
| 595 | PRINTCHAR (ch); |
| 596 | i += len; |
| 597 | } |
| 598 | UNGCPRO; |
| 599 | } |
| 600 | } |
| 601 | \f |
| 602 | DEFUN ("write-char", Fwrite_char, Swrite_char, 1, 2, 0, |
| 603 | "Output character CHARACTER to stream PRINTCHARFUN.\n\ |
| 604 | PRINTCHARFUN defaults to the value of `standard-output' (which see).") |
| 605 | (character, printcharfun) |
| 606 | Lisp_Object character, printcharfun; |
| 607 | { |
| 608 | PRINTDECLARE; |
| 609 | |
| 610 | if (NILP (printcharfun)) |
| 611 | printcharfun = Vstandard_output; |
| 612 | CHECK_NUMBER (character, 0); |
| 613 | PRINTPREPARE; |
| 614 | PRINTCHAR (XINT (character)); |
| 615 | PRINTFINISH; |
| 616 | return character; |
| 617 | } |
| 618 | |
| 619 | /* Used from outside of print.c to print a block of SIZE |
| 620 | single-byte chars at DATA on the default output stream. |
| 621 | Do not use this on the contents of a Lisp string. */ |
| 622 | |
| 623 | void |
| 624 | write_string (data, size) |
| 625 | char *data; |
| 626 | int size; |
| 627 | { |
| 628 | PRINTDECLARE; |
| 629 | Lisp_Object printcharfun; |
| 630 | |
| 631 | printcharfun = Vstandard_output; |
| 632 | |
| 633 | PRINTPREPARE; |
| 634 | strout (data, size, size, printcharfun, 0); |
| 635 | PRINTFINISH; |
| 636 | } |
| 637 | |
| 638 | /* Used from outside of print.c to print a block of SIZE |
| 639 | single-byte chars at DATA on a specified stream PRINTCHARFUN. |
| 640 | Do not use this on the contents of a Lisp string. */ |
| 641 | |
| 642 | void |
| 643 | write_string_1 (data, size, printcharfun) |
| 644 | char *data; |
| 645 | int size; |
| 646 | Lisp_Object printcharfun; |
| 647 | { |
| 648 | PRINTDECLARE; |
| 649 | |
| 650 | PRINTPREPARE; |
| 651 | strout (data, size, size, printcharfun, 0); |
| 652 | PRINTFINISH; |
| 653 | } |
| 654 | |
| 655 | |
| 656 | #ifndef standalone |
| 657 | |
| 658 | void |
| 659 | temp_output_buffer_setup (bufname) |
| 660 | char *bufname; |
| 661 | { |
| 662 | register struct buffer *old = current_buffer; |
| 663 | register Lisp_Object buf; |
| 664 | |
| 665 | Fset_buffer (Fget_buffer_create (build_string (bufname))); |
| 666 | |
| 667 | current_buffer->directory = old->directory; |
| 668 | current_buffer->read_only = Qnil; |
| 669 | current_buffer->filename = Qnil; |
| 670 | current_buffer->undo_list = Qt; |
| 671 | current_buffer->overlays_before = Qnil; |
| 672 | current_buffer->overlays_after = Qnil; |
| 673 | current_buffer->enable_multibyte_characters |
| 674 | = buffer_defaults.enable_multibyte_characters; |
| 675 | Ferase_buffer (); |
| 676 | |
| 677 | XSETBUFFER (buf, current_buffer); |
| 678 | specbind (Qstandard_output, buf); |
| 679 | |
| 680 | set_buffer_internal (old); |
| 681 | } |
| 682 | |
| 683 | Lisp_Object |
| 684 | internal_with_output_to_temp_buffer (bufname, function, args) |
| 685 | char *bufname; |
| 686 | Lisp_Object (*function) P_ ((Lisp_Object)); |
| 687 | Lisp_Object args; |
| 688 | { |
| 689 | int count = specpdl_ptr - specpdl; |
| 690 | Lisp_Object buf, val; |
| 691 | struct gcpro gcpro1; |
| 692 | |
| 693 | GCPRO1 (args); |
| 694 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); |
| 695 | temp_output_buffer_setup (bufname); |
| 696 | buf = Vstandard_output; |
| 697 | UNGCPRO; |
| 698 | |
| 699 | val = (*function) (args); |
| 700 | |
| 701 | GCPRO1 (val); |
| 702 | temp_output_buffer_show (buf); |
| 703 | UNGCPRO; |
| 704 | |
| 705 | return unbind_to (count, val); |
| 706 | } |
| 707 | |
| 708 | DEFUN ("with-output-to-temp-buffer", Fwith_output_to_temp_buffer, Swith_output_to_temp_buffer, |
| 709 | 1, UNEVALLED, 0, |
| 710 | "Bind `standard-output' to buffer BUFNAME, eval BODY, then show that buffer.\n\ |
| 711 | The buffer is cleared out initially, and marked as unmodified when done.\n\ |
| 712 | All output done by BODY is inserted in that buffer by default.\n\ |
| 713 | The buffer is displayed in another window, but not selected.\n\ |
| 714 | The value of the last form in BODY is returned.\n\ |
| 715 | If BODY does not finish normally, the buffer BUFNAME is not displayed.\n\n\ |
| 716 | If variable `temp-buffer-show-function' is non-nil, call it at the end\n\ |
| 717 | to get the buffer displayed. It gets one argument, the buffer to display.") |
| 718 | (args) |
| 719 | Lisp_Object args; |
| 720 | { |
| 721 | struct gcpro gcpro1; |
| 722 | Lisp_Object name; |
| 723 | int count = specpdl_ptr - specpdl; |
| 724 | Lisp_Object buf, val; |
| 725 | |
| 726 | GCPRO1(args); |
| 727 | name = Feval (Fcar (args)); |
| 728 | UNGCPRO; |
| 729 | |
| 730 | CHECK_STRING (name, 0); |
| 731 | temp_output_buffer_setup (XSTRING (name)->data); |
| 732 | buf = Vstandard_output; |
| 733 | |
| 734 | val = Fprogn (Fcdr (args)); |
| 735 | |
| 736 | temp_output_buffer_show (buf); |
| 737 | |
| 738 | return unbind_to (count, val); |
| 739 | } |
| 740 | #endif /* not standalone */ |
| 741 | \f |
| 742 | static void print (); |
| 743 | |
| 744 | DEFUN ("terpri", Fterpri, Sterpri, 0, 1, 0, |
| 745 | "Output a newline to stream PRINTCHARFUN.\n\ |
| 746 | If PRINTCHARFUN is omitted or nil, the value of `standard-output' is used.") |
| 747 | (printcharfun) |
| 748 | Lisp_Object printcharfun; |
| 749 | { |
| 750 | PRINTDECLARE; |
| 751 | |
| 752 | if (NILP (printcharfun)) |
| 753 | printcharfun = Vstandard_output; |
| 754 | PRINTPREPARE; |
| 755 | PRINTCHAR ('\n'); |
| 756 | PRINTFINISH; |
| 757 | return Qt; |
| 758 | } |
| 759 | |
| 760 | DEFUN ("prin1", Fprin1, Sprin1, 1, 2, 0, |
| 761 | "Output the printed representation of OBJECT, any Lisp object.\n\ |
| 762 | Quoting characters are printed when needed to make output that `read'\n\ |
| 763 | can handle, whenever this is possible.\n\ |
| 764 | Output stream is PRINTCHARFUN, or value of `standard-output' (which see).") |
| 765 | (object, printcharfun) |
| 766 | Lisp_Object object, printcharfun; |
| 767 | { |
| 768 | PRINTDECLARE; |
| 769 | |
| 770 | #ifdef MAX_PRINT_CHARS |
| 771 | max_print = 0; |
| 772 | #endif /* MAX_PRINT_CHARS */ |
| 773 | if (NILP (printcharfun)) |
| 774 | printcharfun = Vstandard_output; |
| 775 | PRINTPREPARE; |
| 776 | print_depth = 0; |
| 777 | print (object, printcharfun, 1); |
| 778 | PRINTFINISH; |
| 779 | return object; |
| 780 | } |
| 781 | |
| 782 | /* a buffer which is used to hold output being built by prin1-to-string */ |
| 783 | Lisp_Object Vprin1_to_string_buffer; |
| 784 | |
| 785 | DEFUN ("prin1-to-string", Fprin1_to_string, Sprin1_to_string, 1, 2, 0, |
| 786 | "Return a string containing the printed representation of OBJECT,\n\ |
| 787 | any Lisp object. Quoting characters are used when needed to make output\n\ |
| 788 | that `read' can handle, whenever this is possible, unless the optional\n\ |
| 789 | second argument NOESCAPE is non-nil.") |
| 790 | (object, noescape) |
| 791 | Lisp_Object object, noescape; |
| 792 | { |
| 793 | PRINTDECLARE; |
| 794 | Lisp_Object printcharfun; |
| 795 | struct gcpro gcpro1, gcpro2; |
| 796 | Lisp_Object tem; |
| 797 | |
| 798 | /* Save and restore this--we are altering a buffer |
| 799 | but we don't want to deactivate the mark just for that. |
| 800 | No need for specbind, since errors deactivate the mark. */ |
| 801 | tem = Vdeactivate_mark; |
| 802 | GCPRO2 (object, tem); |
| 803 | |
| 804 | printcharfun = Vprin1_to_string_buffer; |
| 805 | PRINTPREPARE; |
| 806 | print_depth = 0; |
| 807 | print (object, printcharfun, NILP (noescape)); |
| 808 | /* Make Vprin1_to_string_buffer be the default buffer after PRINTFINSH */ |
| 809 | PRINTFINISH; |
| 810 | set_buffer_internal (XBUFFER (Vprin1_to_string_buffer)); |
| 811 | object = Fbuffer_string (); |
| 812 | |
| 813 | Ferase_buffer (); |
| 814 | set_buffer_internal (old); |
| 815 | |
| 816 | Vdeactivate_mark = tem; |
| 817 | UNGCPRO; |
| 818 | |
| 819 | return object; |
| 820 | } |
| 821 | |
| 822 | DEFUN ("princ", Fprinc, Sprinc, 1, 2, 0, |
| 823 | "Output the printed representation of OBJECT, any Lisp object.\n\ |
| 824 | No quoting characters are used; no delimiters are printed around\n\ |
| 825 | the contents of strings.\n\ |
| 826 | Output stream is PRINTCHARFUN, or value of standard-output (which see).") |
| 827 | (object, printcharfun) |
| 828 | Lisp_Object object, printcharfun; |
| 829 | { |
| 830 | PRINTDECLARE; |
| 831 | |
| 832 | if (NILP (printcharfun)) |
| 833 | printcharfun = Vstandard_output; |
| 834 | PRINTPREPARE; |
| 835 | print_depth = 0; |
| 836 | print (object, printcharfun, 0); |
| 837 | PRINTFINISH; |
| 838 | return object; |
| 839 | } |
| 840 | |
| 841 | DEFUN ("print", Fprint, Sprint, 1, 2, 0, |
| 842 | "Output the printed representation of OBJECT, with newlines around it.\n\ |
| 843 | Quoting characters are printed when needed to make output that `read'\n\ |
| 844 | can handle, whenever this is possible.\n\ |
| 845 | Output stream is PRINTCHARFUN, or value of `standard-output' (which see).") |
| 846 | (object, printcharfun) |
| 847 | Lisp_Object object, printcharfun; |
| 848 | { |
| 849 | PRINTDECLARE; |
| 850 | struct gcpro gcpro1; |
| 851 | |
| 852 | #ifdef MAX_PRINT_CHARS |
| 853 | print_chars = 0; |
| 854 | max_print = MAX_PRINT_CHARS; |
| 855 | #endif /* MAX_PRINT_CHARS */ |
| 856 | if (NILP (printcharfun)) |
| 857 | printcharfun = Vstandard_output; |
| 858 | GCPRO1 (object); |
| 859 | PRINTPREPARE; |
| 860 | print_depth = 0; |
| 861 | PRINTCHAR ('\n'); |
| 862 | print (object, printcharfun, 1); |
| 863 | PRINTCHAR ('\n'); |
| 864 | PRINTFINISH; |
| 865 | #ifdef MAX_PRINT_CHARS |
| 866 | max_print = 0; |
| 867 | print_chars = 0; |
| 868 | #endif /* MAX_PRINT_CHARS */ |
| 869 | UNGCPRO; |
| 870 | return object; |
| 871 | } |
| 872 | |
| 873 | /* The subroutine object for external-debugging-output is kept here |
| 874 | for the convenience of the debugger. */ |
| 875 | Lisp_Object Qexternal_debugging_output; |
| 876 | |
| 877 | DEFUN ("external-debugging-output", Fexternal_debugging_output, Sexternal_debugging_output, 1, 1, 0, |
| 878 | "Write CHARACTER to stderr.\n\ |
| 879 | You can call print while debugging emacs, and pass it this function\n\ |
| 880 | to make it write to the debugging output.\n") |
| 881 | (character) |
| 882 | Lisp_Object character; |
| 883 | { |
| 884 | CHECK_NUMBER (character, 0); |
| 885 | putc (XINT (character), stderr); |
| 886 | |
| 887 | #ifdef WINDOWSNT |
| 888 | /* Send the output to a debugger (nothing happens if there isn't one). */ |
| 889 | { |
| 890 | char buf[2] = {(char) XINT (character), '\0'}; |
| 891 | OutputDebugString (buf); |
| 892 | } |
| 893 | #endif |
| 894 | |
| 895 | return character; |
| 896 | } |
| 897 | |
| 898 | /* This is the interface for debugging printing. */ |
| 899 | |
| 900 | void |
| 901 | debug_print (arg) |
| 902 | Lisp_Object arg; |
| 903 | { |
| 904 | Fprin1 (arg, Qexternal_debugging_output); |
| 905 | fprintf (stderr, "\r\n"); |
| 906 | } |
| 907 | \f |
| 908 | DEFUN ("error-message-string", Ferror_message_string, Serror_message_string, |
| 909 | 1, 1, 0, |
| 910 | "Convert an error value (ERROR-SYMBOL . DATA) to an error message.") |
| 911 | (obj) |
| 912 | Lisp_Object obj; |
| 913 | { |
| 914 | struct buffer *old = current_buffer; |
| 915 | Lisp_Object original, printcharfun, value; |
| 916 | struct gcpro gcpro1; |
| 917 | |
| 918 | /* If OBJ is (error STRING), just return STRING. |
| 919 | That is not only faster, it also avoids the need to allocate |
| 920 | space here when the error is due to memory full. */ |
| 921 | if (CONSP (obj) && EQ (XCONS (obj)->car, Qerror) |
| 922 | && CONSP (XCONS (obj)->cdr) |
| 923 | && STRINGP (XCONS (XCONS (obj)->cdr)->car) |
| 924 | && NILP (XCONS (XCONS (obj)->cdr)->cdr)) |
| 925 | return XCONS (XCONS (obj)->cdr)->car; |
| 926 | |
| 927 | print_error_message (obj, Vprin1_to_string_buffer); |
| 928 | |
| 929 | set_buffer_internal (XBUFFER (Vprin1_to_string_buffer)); |
| 930 | value = Fbuffer_string (); |
| 931 | |
| 932 | GCPRO1 (value); |
| 933 | Ferase_buffer (); |
| 934 | set_buffer_internal (old); |
| 935 | UNGCPRO; |
| 936 | |
| 937 | return value; |
| 938 | } |
| 939 | |
| 940 | /* Print an error message for the error DATA |
| 941 | onto Lisp output stream STREAM (suitable for the print functions). */ |
| 942 | |
| 943 | void |
| 944 | print_error_message (data, stream) |
| 945 | Lisp_Object data, stream; |
| 946 | { |
| 947 | Lisp_Object errname, errmsg, file_error, tail; |
| 948 | struct gcpro gcpro1; |
| 949 | int i; |
| 950 | |
| 951 | errname = Fcar (data); |
| 952 | |
| 953 | if (EQ (errname, Qerror)) |
| 954 | { |
| 955 | data = Fcdr (data); |
| 956 | if (!CONSP (data)) data = Qnil; |
| 957 | errmsg = Fcar (data); |
| 958 | file_error = Qnil; |
| 959 | } |
| 960 | else |
| 961 | { |
| 962 | errmsg = Fget (errname, Qerror_message); |
| 963 | file_error = Fmemq (Qfile_error, |
| 964 | Fget (errname, Qerror_conditions)); |
| 965 | } |
| 966 | |
| 967 | /* Print an error message including the data items. */ |
| 968 | |
| 969 | tail = Fcdr_safe (data); |
| 970 | GCPRO1 (tail); |
| 971 | |
| 972 | /* For file-error, make error message by concatenating |
| 973 | all the data items. They are all strings. */ |
| 974 | if (!NILP (file_error) && !NILP (tail)) |
| 975 | errmsg = XCONS (tail)->car, tail = XCONS (tail)->cdr; |
| 976 | |
| 977 | if (STRINGP (errmsg)) |
| 978 | Fprinc (errmsg, stream); |
| 979 | else |
| 980 | write_string_1 ("peculiar error", -1, stream); |
| 981 | |
| 982 | for (i = 0; CONSP (tail); tail = Fcdr (tail), i++) |
| 983 | { |
| 984 | write_string_1 (i ? ", " : ": ", 2, stream); |
| 985 | if (!NILP (file_error)) |
| 986 | Fprinc (Fcar (tail), stream); |
| 987 | else |
| 988 | Fprin1 (Fcar (tail), stream); |
| 989 | } |
| 990 | UNGCPRO; |
| 991 | } |
| 992 | \f |
| 993 | #ifdef LISP_FLOAT_TYPE |
| 994 | |
| 995 | /* |
| 996 | * The buffer should be at least as large as the max string size of the |
| 997 | * largest float, printed in the biggest notation. This is undoubtedly |
| 998 | * 20d float_output_format, with the negative of the C-constant "HUGE" |
| 999 | * from <math.h>. |
| 1000 | * |
| 1001 | * On the vax the worst case is -1e38 in 20d format which takes 61 bytes. |
| 1002 | * |
| 1003 | * I assume that IEEE-754 format numbers can take 329 bytes for the worst |
| 1004 | * case of -1e307 in 20d float_output_format. What is one to do (short of |
| 1005 | * re-writing _doprnt to be more sane)? |
| 1006 | * -wsr |
| 1007 | */ |
| 1008 | |
| 1009 | void |
| 1010 | float_to_string (buf, data) |
| 1011 | unsigned char *buf; |
| 1012 | double data; |
| 1013 | { |
| 1014 | unsigned char *cp; |
| 1015 | int width; |
| 1016 | |
| 1017 | /* Check for plus infinity in a way that won't lose |
| 1018 | if there is no plus infinity. */ |
| 1019 | if (data == data / 2 && data > 1.0) |
| 1020 | { |
| 1021 | strcpy (buf, "1.0e+INF"); |
| 1022 | return; |
| 1023 | } |
| 1024 | /* Likewise for minus infinity. */ |
| 1025 | if (data == data / 2 && data < -1.0) |
| 1026 | { |
| 1027 | strcpy (buf, "-1.0e+INF"); |
| 1028 | return; |
| 1029 | } |
| 1030 | /* Check for NaN in a way that won't fail if there are no NaNs. */ |
| 1031 | if (! (data * 0.0 >= 0.0)) |
| 1032 | { |
| 1033 | strcpy (buf, "0.0e+NaN"); |
| 1034 | return; |
| 1035 | } |
| 1036 | |
| 1037 | if (NILP (Vfloat_output_format) |
| 1038 | || !STRINGP (Vfloat_output_format)) |
| 1039 | lose: |
| 1040 | { |
| 1041 | /* Generate the fewest number of digits that represent the |
| 1042 | floating point value without losing information. |
| 1043 | The following method is simple but a bit slow. |
| 1044 | For ideas about speeding things up, please see: |
| 1045 | |
| 1046 | Guy L Steele Jr & Jon L White, How to print floating-point numbers |
| 1047 | accurately. SIGPLAN notices 25, 6 (June 1990), 112-126. |
| 1048 | |
| 1049 | Robert G Burger & R Kent Dybvig, Printing floating point numbers |
| 1050 | quickly and accurately, SIGPLAN notices 31, 5 (May 1996), 108-116. */ |
| 1051 | |
| 1052 | width = fabs (data) < DBL_MIN ? 1 : DBL_DIG; |
| 1053 | do |
| 1054 | sprintf (buf, "%.*g", width, data); |
| 1055 | while (width++ < DOUBLE_DIGITS_BOUND && atof (buf) != data); |
| 1056 | } |
| 1057 | else /* oink oink */ |
| 1058 | { |
| 1059 | /* Check that the spec we have is fully valid. |
| 1060 | This means not only valid for printf, |
| 1061 | but meant for floats, and reasonable. */ |
| 1062 | cp = XSTRING (Vfloat_output_format)->data; |
| 1063 | |
| 1064 | if (cp[0] != '%') |
| 1065 | goto lose; |
| 1066 | if (cp[1] != '.') |
| 1067 | goto lose; |
| 1068 | |
| 1069 | cp += 2; |
| 1070 | |
| 1071 | /* Check the width specification. */ |
| 1072 | width = -1; |
| 1073 | if ('0' <= *cp && *cp <= '9') |
| 1074 | { |
| 1075 | width = 0; |
| 1076 | do |
| 1077 | width = (width * 10) + (*cp++ - '0'); |
| 1078 | while (*cp >= '0' && *cp <= '9'); |
| 1079 | |
| 1080 | /* A precision of zero is valid only for %f. */ |
| 1081 | if (width > DBL_DIG |
| 1082 | || (width == 0 && *cp != 'f')) |
| 1083 | goto lose; |
| 1084 | } |
| 1085 | |
| 1086 | if (*cp != 'e' && *cp != 'f' && *cp != 'g') |
| 1087 | goto lose; |
| 1088 | |
| 1089 | if (cp[1] != 0) |
| 1090 | goto lose; |
| 1091 | |
| 1092 | sprintf (buf, XSTRING (Vfloat_output_format)->data, data); |
| 1093 | } |
| 1094 | |
| 1095 | /* Make sure there is a decimal point with digit after, or an |
| 1096 | exponent, so that the value is readable as a float. But don't do |
| 1097 | this with "%.0f"; it's valid for that not to produce a decimal |
| 1098 | point. Note that width can be 0 only for %.0f. */ |
| 1099 | if (width != 0) |
| 1100 | { |
| 1101 | for (cp = buf; *cp; cp++) |
| 1102 | if ((*cp < '0' || *cp > '9') && *cp != '-') |
| 1103 | break; |
| 1104 | |
| 1105 | if (*cp == '.' && cp[1] == 0) |
| 1106 | { |
| 1107 | cp[1] = '0'; |
| 1108 | cp[2] = 0; |
| 1109 | } |
| 1110 | |
| 1111 | if (*cp == 0) |
| 1112 | { |
| 1113 | *cp++ = '.'; |
| 1114 | *cp++ = '0'; |
| 1115 | *cp++ = 0; |
| 1116 | } |
| 1117 | } |
| 1118 | } |
| 1119 | #endif /* LISP_FLOAT_TYPE */ |
| 1120 | \f |
| 1121 | static void |
| 1122 | print (obj, printcharfun, escapeflag) |
| 1123 | Lisp_Object obj; |
| 1124 | register Lisp_Object printcharfun; |
| 1125 | int escapeflag; |
| 1126 | { |
| 1127 | char buf[30]; |
| 1128 | |
| 1129 | QUIT; |
| 1130 | |
| 1131 | #if 1 /* I'm not sure this is really worth doing. */ |
| 1132 | /* Detect circularities and truncate them. |
| 1133 | No need to offer any alternative--this is better than an error. */ |
| 1134 | if (CONSP (obj) || VECTORP (obj) || COMPILEDP (obj)) |
| 1135 | { |
| 1136 | int i; |
| 1137 | for (i = 0; i < print_depth; i++) |
| 1138 | if (EQ (obj, being_printed[i])) |
| 1139 | { |
| 1140 | sprintf (buf, "#%d", i); |
| 1141 | strout (buf, -1, -1, printcharfun, 0); |
| 1142 | return; |
| 1143 | } |
| 1144 | } |
| 1145 | #endif |
| 1146 | |
| 1147 | being_printed[print_depth] = obj; |
| 1148 | print_depth++; |
| 1149 | |
| 1150 | if (print_depth > PRINT_CIRCLE) |
| 1151 | error ("Apparently circular structure being printed"); |
| 1152 | #ifdef MAX_PRINT_CHARS |
| 1153 | if (max_print && print_chars > max_print) |
| 1154 | { |
| 1155 | PRINTCHAR ('\n'); |
| 1156 | print_chars = 0; |
| 1157 | } |
| 1158 | #endif /* MAX_PRINT_CHARS */ |
| 1159 | |
| 1160 | switch (XGCTYPE (obj)) |
| 1161 | { |
| 1162 | case Lisp_Int: |
| 1163 | if (sizeof (int) == sizeof (EMACS_INT)) |
| 1164 | sprintf (buf, "%d", XINT (obj)); |
| 1165 | else if (sizeof (long) == sizeof (EMACS_INT)) |
| 1166 | sprintf (buf, "%ld", XINT (obj)); |
| 1167 | else |
| 1168 | abort (); |
| 1169 | strout (buf, -1, -1, printcharfun, 0); |
| 1170 | break; |
| 1171 | |
| 1172 | #ifdef LISP_FLOAT_TYPE |
| 1173 | case Lisp_Float: |
| 1174 | { |
| 1175 | char pigbuf[350]; /* see comments in float_to_string */ |
| 1176 | |
| 1177 | float_to_string (pigbuf, XFLOAT(obj)->data); |
| 1178 | strout (pigbuf, -1, -1, printcharfun, 0); |
| 1179 | } |
| 1180 | break; |
| 1181 | #endif |
| 1182 | |
| 1183 | case Lisp_String: |
| 1184 | if (!escapeflag) |
| 1185 | print_string (obj, printcharfun); |
| 1186 | else |
| 1187 | { |
| 1188 | register int i, i_byte; |
| 1189 | register unsigned char c; |
| 1190 | struct gcpro gcpro1; |
| 1191 | int size_byte; |
| 1192 | /* 1 means we must ensure that the next character we output |
| 1193 | cannot be taken as part of a hex character escape. */ |
| 1194 | int need_nonhex = 0; |
| 1195 | |
| 1196 | GCPRO1 (obj); |
| 1197 | |
| 1198 | #ifdef USE_TEXT_PROPERTIES |
| 1199 | if (!NULL_INTERVAL_P (XSTRING (obj)->intervals)) |
| 1200 | { |
| 1201 | PRINTCHAR ('#'); |
| 1202 | PRINTCHAR ('('); |
| 1203 | } |
| 1204 | #endif |
| 1205 | |
| 1206 | PRINTCHAR ('\"'); |
| 1207 | size_byte = STRING_BYTES (XSTRING (obj)); |
| 1208 | |
| 1209 | for (i = 0, i_byte = 0; i_byte < size_byte;) |
| 1210 | { |
| 1211 | /* Here, we must convert each multi-byte form to the |
| 1212 | corresponding character code before handing it to PRINTCHAR. */ |
| 1213 | int len; |
| 1214 | int c; |
| 1215 | |
| 1216 | if (STRING_MULTIBYTE (obj)) |
| 1217 | FETCH_STRING_CHAR_ADVANCE (c, obj, i, i_byte); |
| 1218 | else |
| 1219 | c = XSTRING (obj)->data[i_byte++]; |
| 1220 | |
| 1221 | QUIT; |
| 1222 | |
| 1223 | if (c == '\n' && print_escape_newlines) |
| 1224 | { |
| 1225 | PRINTCHAR ('\\'); |
| 1226 | PRINTCHAR ('n'); |
| 1227 | } |
| 1228 | else if (c == '\f' && print_escape_newlines) |
| 1229 | { |
| 1230 | PRINTCHAR ('\\'); |
| 1231 | PRINTCHAR ('f'); |
| 1232 | } |
| 1233 | else if ((! SINGLE_BYTE_CHAR_P (c) |
| 1234 | && NILP (current_buffer->enable_multibyte_characters))) |
| 1235 | { |
| 1236 | /* When multibyte is disabled, |
| 1237 | print multibyte string chars using hex escapes. */ |
| 1238 | unsigned char outbuf[50]; |
| 1239 | sprintf (outbuf, "\\x%x", c); |
| 1240 | strout (outbuf, -1, -1, printcharfun, 0); |
| 1241 | need_nonhex = 1; |
| 1242 | } |
| 1243 | else if (SINGLE_BYTE_CHAR_P (c) |
| 1244 | && ! ASCII_BYTE_P (c) |
| 1245 | && ! NILP (current_buffer->enable_multibyte_characters)) |
| 1246 | { |
| 1247 | /* When multibyte is enabled, |
| 1248 | print single-byte non-ASCII string chars |
| 1249 | using octal escapes. */ |
| 1250 | unsigned char outbuf[5]; |
| 1251 | sprintf (outbuf, "\\%03o", c); |
| 1252 | strout (outbuf, -1, -1, printcharfun, 0); |
| 1253 | } |
| 1254 | else |
| 1255 | { |
| 1256 | /* If we just had a hex escape, and this character |
| 1257 | could be taken as part of it, |
| 1258 | output `\ ' to prevent that. */ |
| 1259 | if (need_nonhex) |
| 1260 | { |
| 1261 | need_nonhex = 0; |
| 1262 | if ((c >= 'a' && c <= 'f') |
| 1263 | || (c >= 'A' && c <= 'F') |
| 1264 | || (c >= '0' && c <= '9')) |
| 1265 | strout ("\\ ", -1, -1, printcharfun, 0); |
| 1266 | } |
| 1267 | |
| 1268 | if (c == '\"' || c == '\\') |
| 1269 | PRINTCHAR ('\\'); |
| 1270 | PRINTCHAR (c); |
| 1271 | } |
| 1272 | } |
| 1273 | PRINTCHAR ('\"'); |
| 1274 | |
| 1275 | #ifdef USE_TEXT_PROPERTIES |
| 1276 | if (!NULL_INTERVAL_P (XSTRING (obj)->intervals)) |
| 1277 | { |
| 1278 | traverse_intervals (XSTRING (obj)->intervals, |
| 1279 | 0, 0, print_interval, printcharfun); |
| 1280 | PRINTCHAR (')'); |
| 1281 | } |
| 1282 | #endif |
| 1283 | |
| 1284 | UNGCPRO; |
| 1285 | } |
| 1286 | break; |
| 1287 | |
| 1288 | case Lisp_Symbol: |
| 1289 | { |
| 1290 | register int confusing; |
| 1291 | register unsigned char *p = XSYMBOL (obj)->name->data; |
| 1292 | register unsigned char *end = p + STRING_BYTES (XSYMBOL (obj)->name); |
| 1293 | register int c; |
| 1294 | int i, i_byte, size_byte; |
| 1295 | Lisp_Object name; |
| 1296 | |
| 1297 | XSETSTRING (name, XSYMBOL (obj)->name); |
| 1298 | |
| 1299 | if (p != end && (*p == '-' || *p == '+')) p++; |
| 1300 | if (p == end) |
| 1301 | confusing = 0; |
| 1302 | /* If symbol name begins with a digit, and ends with a digit, |
| 1303 | and contains nothing but digits and `e', it could be treated |
| 1304 | as a number. So set CONFUSING. |
| 1305 | |
| 1306 | Symbols that contain periods could also be taken as numbers, |
| 1307 | but periods are always escaped, so we don't have to worry |
| 1308 | about them here. */ |
| 1309 | else if (*p >= '0' && *p <= '9' |
| 1310 | && end[-1] >= '0' && end[-1] <= '9') |
| 1311 | { |
| 1312 | while (p != end && ((*p >= '0' && *p <= '9') |
| 1313 | /* Needed for \2e10. */ |
| 1314 | || *p == 'e')) |
| 1315 | p++; |
| 1316 | confusing = (end == p); |
| 1317 | } |
| 1318 | else |
| 1319 | confusing = 0; |
| 1320 | |
| 1321 | /* If we print an uninterned symbol as part of a complex object and |
| 1322 | the flag print-gensym is non-nil, prefix it with #n= to read the |
| 1323 | object back with the #n# reader syntax later if needed. */ |
| 1324 | if (! NILP (Vprint_gensym) && NILP (XSYMBOL (obj)->obarray)) |
| 1325 | { |
| 1326 | if (print_depth > 1) |
| 1327 | { |
| 1328 | Lisp_Object tem; |
| 1329 | tem = Fassq (obj, Vprint_gensym_alist); |
| 1330 | if (CONSP (tem)) |
| 1331 | { |
| 1332 | PRINTCHAR ('#'); |
| 1333 | print (XCDR (tem), printcharfun, escapeflag); |
| 1334 | PRINTCHAR ('#'); |
| 1335 | break; |
| 1336 | } |
| 1337 | else |
| 1338 | { |
| 1339 | if (CONSP (Vprint_gensym_alist)) |
| 1340 | XSETFASTINT (tem, XFASTINT (XCDR (XCAR (Vprint_gensym_alist))) + 1); |
| 1341 | else |
| 1342 | XSETFASTINT (tem, 1); |
| 1343 | Vprint_gensym_alist = Fcons (Fcons (obj, tem), Vprint_gensym_alist); |
| 1344 | |
| 1345 | PRINTCHAR ('#'); |
| 1346 | print (tem, printcharfun, escapeflag); |
| 1347 | PRINTCHAR ('='); |
| 1348 | } |
| 1349 | } |
| 1350 | PRINTCHAR ('#'); |
| 1351 | PRINTCHAR (':'); |
| 1352 | } |
| 1353 | |
| 1354 | size_byte = STRING_BYTES (XSTRING (name)); |
| 1355 | |
| 1356 | for (i = 0, i_byte = 0; i_byte < size_byte;) |
| 1357 | { |
| 1358 | /* Here, we must convert each multi-byte form to the |
| 1359 | corresponding character code before handing it to PRINTCHAR. */ |
| 1360 | |
| 1361 | if (STRING_MULTIBYTE (name)) |
| 1362 | FETCH_STRING_CHAR_ADVANCE (c, name, i, i_byte); |
| 1363 | else |
| 1364 | c = XSTRING (name)->data[i_byte++]; |
| 1365 | |
| 1366 | QUIT; |
| 1367 | |
| 1368 | if (escapeflag) |
| 1369 | { |
| 1370 | if (c == '\"' || c == '\\' || c == '\'' |
| 1371 | || c == ';' || c == '#' || c == '(' || c == ')' |
| 1372 | || c == ',' || c =='.' || c == '`' |
| 1373 | || c == '[' || c == ']' || c == '?' || c <= 040 |
| 1374 | || confusing) |
| 1375 | PRINTCHAR ('\\'), confusing = 0; |
| 1376 | } |
| 1377 | PRINTCHAR (c); |
| 1378 | } |
| 1379 | } |
| 1380 | break; |
| 1381 | |
| 1382 | case Lisp_Cons: |
| 1383 | /* If deeper than spec'd depth, print placeholder. */ |
| 1384 | if (INTEGERP (Vprint_level) |
| 1385 | && print_depth > XINT (Vprint_level)) |
| 1386 | strout ("...", -1, -1, printcharfun, 0); |
| 1387 | else if (print_quoted && CONSP (XCDR (obj)) && NILP (XCDR (XCDR (obj))) |
| 1388 | && (EQ (XCAR (obj), Qquote))) |
| 1389 | { |
| 1390 | PRINTCHAR ('\''); |
| 1391 | print (XCAR (XCDR (obj)), printcharfun, escapeflag); |
| 1392 | } |
| 1393 | else if (print_quoted && CONSP (XCDR (obj)) && NILP (XCDR (XCDR (obj))) |
| 1394 | && (EQ (XCAR (obj), Qfunction))) |
| 1395 | { |
| 1396 | PRINTCHAR ('#'); |
| 1397 | PRINTCHAR ('\''); |
| 1398 | print (XCAR (XCDR (obj)), printcharfun, escapeflag); |
| 1399 | } |
| 1400 | else if (print_quoted && CONSP (XCDR (obj)) && NILP (XCDR (XCDR (obj))) |
| 1401 | && ((EQ (XCAR (obj), Qbackquote) |
| 1402 | || EQ (XCAR (obj), Qcomma) |
| 1403 | || EQ (XCAR (obj), Qcomma_at) |
| 1404 | || EQ (XCAR (obj), Qcomma_dot)))) |
| 1405 | { |
| 1406 | print (XCAR (obj), printcharfun, 0); |
| 1407 | print (XCAR (XCDR (obj)), printcharfun, escapeflag); |
| 1408 | } |
| 1409 | else |
| 1410 | { |
| 1411 | PRINTCHAR ('('); |
| 1412 | { |
| 1413 | register int i = 0; |
| 1414 | register int print_length = 0; |
| 1415 | |
| 1416 | if (INTEGERP (Vprint_length)) |
| 1417 | print_length = XINT (Vprint_length); |
| 1418 | /* Could recognize circularities in cdrs here, |
| 1419 | but that would make printing of long lists quadratic. |
| 1420 | It's not worth doing. */ |
| 1421 | while (CONSP (obj)) |
| 1422 | { |
| 1423 | if (i++) |
| 1424 | PRINTCHAR (' '); |
| 1425 | if (print_length && i > print_length) |
| 1426 | { |
| 1427 | strout ("...", 3, 3, printcharfun, 0); |
| 1428 | break; |
| 1429 | } |
| 1430 | print (XCAR (obj), printcharfun, escapeflag); |
| 1431 | obj = XCDR (obj); |
| 1432 | } |
| 1433 | } |
| 1434 | if (!NILP (obj)) |
| 1435 | { |
| 1436 | strout (" . ", 3, 3, printcharfun, 0); |
| 1437 | print (obj, printcharfun, escapeflag); |
| 1438 | } |
| 1439 | PRINTCHAR (')'); |
| 1440 | } |
| 1441 | break; |
| 1442 | |
| 1443 | case Lisp_Vectorlike: |
| 1444 | if (PROCESSP (obj)) |
| 1445 | { |
| 1446 | if (escapeflag) |
| 1447 | { |
| 1448 | strout ("#<process ", -1, -1, printcharfun, 0); |
| 1449 | print_string (XPROCESS (obj)->name, printcharfun); |
| 1450 | PRINTCHAR ('>'); |
| 1451 | } |
| 1452 | else |
| 1453 | print_string (XPROCESS (obj)->name, printcharfun); |
| 1454 | } |
| 1455 | else if (BOOL_VECTOR_P (obj)) |
| 1456 | { |
| 1457 | register int i; |
| 1458 | register unsigned char c; |
| 1459 | struct gcpro gcpro1; |
| 1460 | int size_in_chars |
| 1461 | = (XBOOL_VECTOR (obj)->size + BITS_PER_CHAR - 1) / BITS_PER_CHAR; |
| 1462 | |
| 1463 | GCPRO1 (obj); |
| 1464 | |
| 1465 | PRINTCHAR ('#'); |
| 1466 | PRINTCHAR ('&'); |
| 1467 | sprintf (buf, "%d", XBOOL_VECTOR (obj)->size); |
| 1468 | strout (buf, -1, -1, printcharfun, 0); |
| 1469 | PRINTCHAR ('\"'); |
| 1470 | |
| 1471 | /* Don't print more characters than the specified maximum. */ |
| 1472 | if (INTEGERP (Vprint_length) |
| 1473 | && XINT (Vprint_length) < size_in_chars) |
| 1474 | size_in_chars = XINT (Vprint_length); |
| 1475 | |
| 1476 | for (i = 0; i < size_in_chars; i++) |
| 1477 | { |
| 1478 | QUIT; |
| 1479 | c = XBOOL_VECTOR (obj)->data[i]; |
| 1480 | if (c == '\n' && print_escape_newlines) |
| 1481 | { |
| 1482 | PRINTCHAR ('\\'); |
| 1483 | PRINTCHAR ('n'); |
| 1484 | } |
| 1485 | else if (c == '\f' && print_escape_newlines) |
| 1486 | { |
| 1487 | PRINTCHAR ('\\'); |
| 1488 | PRINTCHAR ('f'); |
| 1489 | } |
| 1490 | else |
| 1491 | { |
| 1492 | if (c == '\"' || c == '\\') |
| 1493 | PRINTCHAR ('\\'); |
| 1494 | PRINTCHAR (c); |
| 1495 | } |
| 1496 | } |
| 1497 | PRINTCHAR ('\"'); |
| 1498 | |
| 1499 | UNGCPRO; |
| 1500 | } |
| 1501 | else if (SUBRP (obj)) |
| 1502 | { |
| 1503 | strout ("#<subr ", -1, -1, printcharfun, 0); |
| 1504 | strout (XSUBR (obj)->symbol_name, -1, -1, printcharfun, 0); |
| 1505 | PRINTCHAR ('>'); |
| 1506 | } |
| 1507 | #ifndef standalone |
| 1508 | else if (WINDOWP (obj)) |
| 1509 | { |
| 1510 | strout ("#<window ", -1, -1, printcharfun, 0); |
| 1511 | sprintf (buf, "%d", XFASTINT (XWINDOW (obj)->sequence_number)); |
| 1512 | strout (buf, -1, -1, printcharfun, 0); |
| 1513 | if (!NILP (XWINDOW (obj)->buffer)) |
| 1514 | { |
| 1515 | strout (" on ", -1, -1, printcharfun, 0); |
| 1516 | print_string (XBUFFER (XWINDOW (obj)->buffer)->name, printcharfun); |
| 1517 | } |
| 1518 | PRINTCHAR ('>'); |
| 1519 | } |
| 1520 | else if (BUFFERP (obj)) |
| 1521 | { |
| 1522 | if (NILP (XBUFFER (obj)->name)) |
| 1523 | strout ("#<killed buffer>", -1, -1, printcharfun, 0); |
| 1524 | else if (escapeflag) |
| 1525 | { |
| 1526 | strout ("#<buffer ", -1, -1, printcharfun, 0); |
| 1527 | print_string (XBUFFER (obj)->name, printcharfun); |
| 1528 | PRINTCHAR ('>'); |
| 1529 | } |
| 1530 | else |
| 1531 | print_string (XBUFFER (obj)->name, printcharfun); |
| 1532 | } |
| 1533 | else if (WINDOW_CONFIGURATIONP (obj)) |
| 1534 | { |
| 1535 | strout ("#<window-configuration>", -1, -1, printcharfun, 0); |
| 1536 | } |
| 1537 | else if (FRAMEP (obj)) |
| 1538 | { |
| 1539 | strout ((FRAME_LIVE_P (XFRAME (obj)) |
| 1540 | ? "#<frame " : "#<dead frame "), |
| 1541 | -1, -1, printcharfun, 0); |
| 1542 | print_string (XFRAME (obj)->name, printcharfun); |
| 1543 | sprintf (buf, " 0x%lx\\ ", (unsigned long) (XFRAME (obj))); |
| 1544 | strout (buf, -1, -1, printcharfun, 0); |
| 1545 | PRINTCHAR ('>'); |
| 1546 | } |
| 1547 | #endif /* not standalone */ |
| 1548 | else |
| 1549 | { |
| 1550 | int size = XVECTOR (obj)->size; |
| 1551 | if (COMPILEDP (obj)) |
| 1552 | { |
| 1553 | PRINTCHAR ('#'); |
| 1554 | size &= PSEUDOVECTOR_SIZE_MASK; |
| 1555 | } |
| 1556 | if (CHAR_TABLE_P (obj)) |
| 1557 | { |
| 1558 | /* We print a char-table as if it were a vector, |
| 1559 | lumping the parent and default slots in with the |
| 1560 | character slots. But we add #^ as a prefix. */ |
| 1561 | PRINTCHAR ('#'); |
| 1562 | PRINTCHAR ('^'); |
| 1563 | if (SUB_CHAR_TABLE_P (obj)) |
| 1564 | PRINTCHAR ('^'); |
| 1565 | size &= PSEUDOVECTOR_SIZE_MASK; |
| 1566 | } |
| 1567 | if (size & PSEUDOVECTOR_FLAG) |
| 1568 | goto badtype; |
| 1569 | |
| 1570 | PRINTCHAR ('['); |
| 1571 | { |
| 1572 | register int i; |
| 1573 | register Lisp_Object tem; |
| 1574 | |
| 1575 | /* Don't print more elements than the specified maximum. */ |
| 1576 | if (INTEGERP (Vprint_length) |
| 1577 | && XINT (Vprint_length) < size) |
| 1578 | size = XINT (Vprint_length); |
| 1579 | |
| 1580 | for (i = 0; i < size; i++) |
| 1581 | { |
| 1582 | if (i) PRINTCHAR (' '); |
| 1583 | tem = XVECTOR (obj)->contents[i]; |
| 1584 | print (tem, printcharfun, escapeflag); |
| 1585 | } |
| 1586 | } |
| 1587 | PRINTCHAR (']'); |
| 1588 | } |
| 1589 | break; |
| 1590 | |
| 1591 | #ifndef standalone |
| 1592 | case Lisp_Misc: |
| 1593 | switch (XMISCTYPE (obj)) |
| 1594 | { |
| 1595 | case Lisp_Misc_Marker: |
| 1596 | strout ("#<marker ", -1, -1, printcharfun, 0); |
| 1597 | /* Do you think this is necessary? */ |
| 1598 | if (XMARKER (obj)->insertion_type != 0) |
| 1599 | strout ("(before-insertion) ", -1, -1, printcharfun, 0); |
| 1600 | if (!(XMARKER (obj)->buffer)) |
| 1601 | strout ("in no buffer", -1, -1, printcharfun, 0); |
| 1602 | else |
| 1603 | { |
| 1604 | sprintf (buf, "at %d", marker_position (obj)); |
| 1605 | strout (buf, -1, -1, printcharfun, 0); |
| 1606 | strout (" in ", -1, -1, printcharfun, 0); |
| 1607 | print_string (XMARKER (obj)->buffer->name, printcharfun); |
| 1608 | } |
| 1609 | PRINTCHAR ('>'); |
| 1610 | break; |
| 1611 | |
| 1612 | case Lisp_Misc_Overlay: |
| 1613 | strout ("#<overlay ", -1, -1, printcharfun, 0); |
| 1614 | if (!(XMARKER (OVERLAY_START (obj))->buffer)) |
| 1615 | strout ("in no buffer", -1, -1, printcharfun, 0); |
| 1616 | else |
| 1617 | { |
| 1618 | sprintf (buf, "from %d to %d in ", |
| 1619 | marker_position (OVERLAY_START (obj)), |
| 1620 | marker_position (OVERLAY_END (obj))); |
| 1621 | strout (buf, -1, -1, printcharfun, 0); |
| 1622 | print_string (XMARKER (OVERLAY_START (obj))->buffer->name, |
| 1623 | printcharfun); |
| 1624 | } |
| 1625 | PRINTCHAR ('>'); |
| 1626 | break; |
| 1627 | |
| 1628 | /* Remaining cases shouldn't happen in normal usage, but let's print |
| 1629 | them anyway for the benefit of the debugger. */ |
| 1630 | case Lisp_Misc_Free: |
| 1631 | strout ("#<misc free cell>", -1, -1, printcharfun, 0); |
| 1632 | break; |
| 1633 | |
| 1634 | case Lisp_Misc_Intfwd: |
| 1635 | sprintf (buf, "#<intfwd to %d>", *XINTFWD (obj)->intvar); |
| 1636 | strout (buf, -1, -1, printcharfun, 0); |
| 1637 | break; |
| 1638 | |
| 1639 | case Lisp_Misc_Boolfwd: |
| 1640 | sprintf (buf, "#<boolfwd to %s>", |
| 1641 | (*XBOOLFWD (obj)->boolvar ? "t" : "nil")); |
| 1642 | strout (buf, -1, -1, printcharfun, 0); |
| 1643 | break; |
| 1644 | |
| 1645 | case Lisp_Misc_Objfwd: |
| 1646 | strout ("#<objfwd to ", -1, -1, printcharfun, 0); |
| 1647 | print (*XOBJFWD (obj)->objvar, printcharfun, escapeflag); |
| 1648 | PRINTCHAR ('>'); |
| 1649 | break; |
| 1650 | |
| 1651 | case Lisp_Misc_Buffer_Objfwd: |
| 1652 | strout ("#<buffer_objfwd to ", -1, -1, printcharfun, 0); |
| 1653 | print (*(Lisp_Object *)((char *)current_buffer |
| 1654 | + XBUFFER_OBJFWD (obj)->offset), |
| 1655 | printcharfun, escapeflag); |
| 1656 | PRINTCHAR ('>'); |
| 1657 | break; |
| 1658 | |
| 1659 | case Lisp_Misc_Kboard_Objfwd: |
| 1660 | strout ("#<kboard_objfwd to ", -1, -1, printcharfun, 0); |
| 1661 | print (*(Lisp_Object *)((char *) current_kboard |
| 1662 | + XKBOARD_OBJFWD (obj)->offset), |
| 1663 | printcharfun, escapeflag); |
| 1664 | PRINTCHAR ('>'); |
| 1665 | break; |
| 1666 | |
| 1667 | case Lisp_Misc_Buffer_Local_Value: |
| 1668 | strout ("#<buffer_local_value ", -1, -1, printcharfun, 0); |
| 1669 | goto do_buffer_local; |
| 1670 | case Lisp_Misc_Some_Buffer_Local_Value: |
| 1671 | strout ("#<some_buffer_local_value ", -1, -1, printcharfun, 0); |
| 1672 | do_buffer_local: |
| 1673 | strout ("[realvalue] ", -1, -1, printcharfun, 0); |
| 1674 | print (XBUFFER_LOCAL_VALUE (obj)->realvalue, printcharfun, escapeflag); |
| 1675 | if (XBUFFER_LOCAL_VALUE (obj)->found_for_buffer) |
| 1676 | strout ("[local in buffer] ", -1, -1, printcharfun, 0); |
| 1677 | else |
| 1678 | strout ("[buffer] ", -1, -1, printcharfun, 0); |
| 1679 | print (XBUFFER_LOCAL_VALUE (obj)->buffer, |
| 1680 | printcharfun, escapeflag); |
| 1681 | if (XBUFFER_LOCAL_VALUE (obj)->check_frame) |
| 1682 | { |
| 1683 | if (XBUFFER_LOCAL_VALUE (obj)->found_for_frame) |
| 1684 | strout ("[local in frame] ", -1, -1, printcharfun, 0); |
| 1685 | else |
| 1686 | strout ("[frame] ", -1, -1, printcharfun, 0); |
| 1687 | print (XBUFFER_LOCAL_VALUE (obj)->frame, |
| 1688 | printcharfun, escapeflag); |
| 1689 | } |
| 1690 | strout ("[alist-elt] ", -1, -1, printcharfun, 0); |
| 1691 | print (XCONS (XBUFFER_LOCAL_VALUE (obj)->cdr)->car, |
| 1692 | printcharfun, escapeflag); |
| 1693 | strout ("[default-value] ", -1, -1, printcharfun, 0); |
| 1694 | print (XCONS (XBUFFER_LOCAL_VALUE (obj)->cdr)->cdr, |
| 1695 | printcharfun, escapeflag); |
| 1696 | PRINTCHAR ('>'); |
| 1697 | break; |
| 1698 | |
| 1699 | default: |
| 1700 | goto badtype; |
| 1701 | } |
| 1702 | break; |
| 1703 | #endif /* standalone */ |
| 1704 | |
| 1705 | default: |
| 1706 | badtype: |
| 1707 | { |
| 1708 | /* We're in trouble if this happens! |
| 1709 | Probably should just abort () */ |
| 1710 | strout ("#<EMACS BUG: INVALID DATATYPE ", -1, -1, printcharfun, 0); |
| 1711 | if (MISCP (obj)) |
| 1712 | sprintf (buf, "(MISC 0x%04x)", (int) XMISCTYPE (obj)); |
| 1713 | else if (VECTORLIKEP (obj)) |
| 1714 | sprintf (buf, "(PVEC 0x%08x)", (int) XVECTOR (obj)->size); |
| 1715 | else |
| 1716 | sprintf (buf, "(0x%02x)", (int) XTYPE (obj)); |
| 1717 | strout (buf, -1, -1, printcharfun, 0); |
| 1718 | strout (" Save your buffers immediately and please report this bug>", |
| 1719 | -1, -1, printcharfun, 0); |
| 1720 | } |
| 1721 | } |
| 1722 | |
| 1723 | print_depth--; |
| 1724 | } |
| 1725 | \f |
| 1726 | #ifdef USE_TEXT_PROPERTIES |
| 1727 | |
| 1728 | /* Print a description of INTERVAL using PRINTCHARFUN. |
| 1729 | This is part of printing a string that has text properties. */ |
| 1730 | |
| 1731 | void |
| 1732 | print_interval (interval, printcharfun) |
| 1733 | INTERVAL interval; |
| 1734 | Lisp_Object printcharfun; |
| 1735 | { |
| 1736 | PRINTCHAR (' '); |
| 1737 | print (make_number (interval->position), printcharfun, 1); |
| 1738 | PRINTCHAR (' '); |
| 1739 | print (make_number (interval->position + LENGTH (interval)), |
| 1740 | printcharfun, 1); |
| 1741 | PRINTCHAR (' '); |
| 1742 | print (interval->plist, printcharfun, 1); |
| 1743 | } |
| 1744 | |
| 1745 | #endif /* USE_TEXT_PROPERTIES */ |
| 1746 | \f |
| 1747 | void |
| 1748 | syms_of_print () |
| 1749 | { |
| 1750 | DEFVAR_LISP ("standard-output", &Vstandard_output, |
| 1751 | "Output stream `print' uses by default for outputting a character.\n\ |
| 1752 | This may be any function of one argument.\n\ |
| 1753 | It may also be a buffer (output is inserted before point)\n\ |
| 1754 | or a marker (output is inserted and the marker is advanced)\n\ |
| 1755 | or the symbol t (output appears in the echo area)."); |
| 1756 | Vstandard_output = Qt; |
| 1757 | Qstandard_output = intern ("standard-output"); |
| 1758 | staticpro (&Qstandard_output); |
| 1759 | |
| 1760 | #ifdef LISP_FLOAT_TYPE |
| 1761 | DEFVAR_LISP ("float-output-format", &Vfloat_output_format, |
| 1762 | "The format descriptor string used to print floats.\n\ |
| 1763 | This is a %-spec like those accepted by `printf' in C,\n\ |
| 1764 | but with some restrictions. It must start with the two characters `%.'.\n\ |
| 1765 | After that comes an integer precision specification,\n\ |
| 1766 | and then a letter which controls the format.\n\ |
| 1767 | The letters allowed are `e', `f' and `g'.\n\ |
| 1768 | Use `e' for exponential notation \"DIG.DIGITSeEXPT\"\n\ |
| 1769 | Use `f' for decimal point notation \"DIGITS.DIGITS\".\n\ |
| 1770 | Use `g' to choose the shorter of those two formats for the number at hand.\n\ |
| 1771 | The precision in any of these cases is the number of digits following\n\ |
| 1772 | the decimal point. With `f', a precision of 0 means to omit the\n\ |
| 1773 | decimal point. 0 is not allowed with `e' or `g'.\n\n\ |
| 1774 | A value of nil means to use the shortest notation\n\ |
| 1775 | that represents the number without losing information."); |
| 1776 | Vfloat_output_format = Qnil; |
| 1777 | Qfloat_output_format = intern ("float-output-format"); |
| 1778 | staticpro (&Qfloat_output_format); |
| 1779 | #endif /* LISP_FLOAT_TYPE */ |
| 1780 | |
| 1781 | DEFVAR_LISP ("print-length", &Vprint_length, |
| 1782 | "Maximum length of list to print before abbreviating.\n\ |
| 1783 | A value of nil means no limit."); |
| 1784 | Vprint_length = Qnil; |
| 1785 | |
| 1786 | DEFVAR_LISP ("print-level", &Vprint_level, |
| 1787 | "Maximum depth of list nesting to print before abbreviating.\n\ |
| 1788 | A value of nil means no limit."); |
| 1789 | Vprint_level = Qnil; |
| 1790 | |
| 1791 | DEFVAR_BOOL ("print-escape-newlines", &print_escape_newlines, |
| 1792 | "Non-nil means print newlines in strings as backslash-n.\n\ |
| 1793 | Also print formfeeds as backslash-f."); |
| 1794 | print_escape_newlines = 0; |
| 1795 | |
| 1796 | DEFVAR_BOOL ("print-quoted", &print_quoted, |
| 1797 | "Non-nil means print quoted forms with reader syntax.\n\ |
| 1798 | I.e., (quote foo) prints as 'foo, (function foo) as #'foo, and, backquoted\n\ |
| 1799 | forms print in the new syntax."); |
| 1800 | print_quoted = 0; |
| 1801 | |
| 1802 | DEFVAR_LISP ("print-gensym", &Vprint_gensym, |
| 1803 | "Non-nil means print uninterned symbols so they will read as uninterned.\n\ |
| 1804 | I.e., the value of (make-symbol \"foobar\") prints as #:foobar.\n\ |
| 1805 | When the uninterned symbol appears within a larger data structure,\n\ |
| 1806 | in addition use the #...# and #...= constructs as needed,\n\ |
| 1807 | so that multiple references to the same symbol are shared once again\n\ |
| 1808 | when the text is read back.\n\ |
| 1809 | \n\ |
| 1810 | If the value of `print-gensym' is a cons cell, then in addition refrain from\n\ |
| 1811 | clearing `print-gensym-alist' on entry to and exit from printing functions,\n\ |
| 1812 | so that the use of #...# and #...= can carry over for several separately\n\ |
| 1813 | printed objects."); |
| 1814 | Vprint_gensym = Qnil; |
| 1815 | |
| 1816 | DEFVAR_LISP ("print-gensym-alist", &Vprint_gensym_alist, |
| 1817 | "Association list of elements (GENSYM . N) to guide use of #N# and #N=.\n\ |
| 1818 | In each element, GENSYM is an uninterned symbol that has been associated\n\ |
| 1819 | with #N= for the specified value of N."); |
| 1820 | Vprint_gensym_alist = Qnil; |
| 1821 | |
| 1822 | /* prin1_to_string_buffer initialized in init_buffer_once in buffer.c */ |
| 1823 | staticpro (&Vprin1_to_string_buffer); |
| 1824 | |
| 1825 | defsubr (&Sprin1); |
| 1826 | defsubr (&Sprin1_to_string); |
| 1827 | defsubr (&Serror_message_string); |
| 1828 | defsubr (&Sprinc); |
| 1829 | defsubr (&Sprint); |
| 1830 | defsubr (&Sterpri); |
| 1831 | defsubr (&Swrite_char); |
| 1832 | defsubr (&Sexternal_debugging_output); |
| 1833 | |
| 1834 | Qexternal_debugging_output = intern ("external-debugging-output"); |
| 1835 | staticpro (&Qexternal_debugging_output); |
| 1836 | |
| 1837 | Qprint_escape_newlines = intern ("print-escape-newlines"); |
| 1838 | staticpro (&Qprint_escape_newlines); |
| 1839 | |
| 1840 | #ifndef standalone |
| 1841 | defsubr (&Swith_output_to_temp_buffer); |
| 1842 | #endif /* not standalone */ |
| 1843 | } |