| 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 | #include "buffer.h" |
| 27 | #include "charset.h" |
| 28 | #include "frame.h" |
| 29 | #include "window.h" |
| 30 | #include "process.h" |
| 31 | #include "dispextern.h" |
| 32 | #include "termchar.h" |
| 33 | #include "keyboard.h" |
| 34 | |
| 35 | #ifdef USE_TEXT_PROPERTIES |
| 36 | #include "intervals.h" |
| 37 | #endif |
| 38 | |
| 39 | Lisp_Object Vstandard_output, Qstandard_output; |
| 40 | |
| 41 | Lisp_Object Qtemp_buffer_setup_hook; |
| 42 | |
| 43 | /* These are used to print like we read. */ |
| 44 | extern Lisp_Object Qbackquote, Qcomma, Qcomma_at, Qcomma_dot, Qfunction; |
| 45 | |
| 46 | #ifdef LISP_FLOAT_TYPE |
| 47 | Lisp_Object Vfloat_output_format, Qfloat_output_format; |
| 48 | |
| 49 | /* Work around a problem that happens because math.h on hpux 7 |
| 50 | defines two static variables--which, in Emacs, are not really static, |
| 51 | because `static' is defined as nothing. The problem is that they are |
| 52 | defined both here and in lread.c. |
| 53 | These macros prevent the name conflict. */ |
| 54 | #if defined (HPUX) && !defined (HPUX8) |
| 55 | #define _MAXLDBL print_maxldbl |
| 56 | #define _NMAXLDBL print_nmaxldbl |
| 57 | #endif |
| 58 | |
| 59 | #include <math.h> |
| 60 | |
| 61 | #if STDC_HEADERS |
| 62 | #include <float.h> |
| 63 | #include <stdlib.h> |
| 64 | #endif |
| 65 | |
| 66 | /* Default to values appropriate for IEEE floating point. */ |
| 67 | #ifndef FLT_RADIX |
| 68 | #define FLT_RADIX 2 |
| 69 | #endif |
| 70 | #ifndef DBL_MANT_DIG |
| 71 | #define DBL_MANT_DIG 53 |
| 72 | #endif |
| 73 | #ifndef DBL_DIG |
| 74 | #define DBL_DIG 15 |
| 75 | #endif |
| 76 | #ifndef DBL_MIN |
| 77 | #define DBL_MIN 2.2250738585072014e-308 |
| 78 | #endif |
| 79 | |
| 80 | #ifdef DBL_MIN_REPLACEMENT |
| 81 | #undef DBL_MIN |
| 82 | #define DBL_MIN DBL_MIN_REPLACEMENT |
| 83 | #endif |
| 84 | |
| 85 | /* Define DOUBLE_DIGITS_BOUND, an upper bound on the number of decimal digits |
| 86 | needed to express a float without losing information. |
| 87 | The general-case formula is valid for the usual case, IEEE floating point, |
| 88 | but many compilers can't optimize the formula to an integer constant, |
| 89 | so make a special case for it. */ |
| 90 | #if FLT_RADIX == 2 && DBL_MANT_DIG == 53 |
| 91 | #define DOUBLE_DIGITS_BOUND 17 /* IEEE floating point */ |
| 92 | #else |
| 93 | #define DOUBLE_DIGITS_BOUND ((int) ceil (log10 (pow (FLT_RADIX, DBL_MANT_DIG)))) |
| 94 | #endif |
| 95 | |
| 96 | #endif /* LISP_FLOAT_TYPE */ |
| 97 | |
| 98 | /* Avoid actual stack overflow in print. */ |
| 99 | int print_depth; |
| 100 | |
| 101 | /* Detect most circularities to print finite output. */ |
| 102 | #define PRINT_CIRCLE 200 |
| 103 | Lisp_Object being_printed[PRINT_CIRCLE]; |
| 104 | |
| 105 | /* When printing into a buffer, first we put the text in this |
| 106 | block, then insert it all at once. */ |
| 107 | char *print_buffer; |
| 108 | |
| 109 | /* Size allocated in print_buffer. */ |
| 110 | int print_buffer_size; |
| 111 | /* Chars stored in print_buffer. */ |
| 112 | int print_buffer_pos; |
| 113 | /* Bytes stored in print_buffer. */ |
| 114 | int print_buffer_pos_byte; |
| 115 | |
| 116 | /* Maximum length of list to print in full; noninteger means |
| 117 | effectively infinity */ |
| 118 | |
| 119 | Lisp_Object Vprint_length; |
| 120 | |
| 121 | /* Maximum depth of list to print in full; noninteger means |
| 122 | effectively infinity. */ |
| 123 | |
| 124 | Lisp_Object Vprint_level; |
| 125 | |
| 126 | /* Nonzero means print newlines in strings as \n. */ |
| 127 | |
| 128 | int print_escape_newlines; |
| 129 | |
| 130 | /* Nonzero means to print single-byte non-ascii characters in strings as |
| 131 | octal escapes. */ |
| 132 | |
| 133 | int print_escape_nonascii; |
| 134 | |
| 135 | /* Nonzero means to print multibyte characters in strings as hex escapes. */ |
| 136 | |
| 137 | int print_escape_multibyte; |
| 138 | |
| 139 | Lisp_Object Qprint_escape_newlines; |
| 140 | Lisp_Object Qprint_escape_multibyte, Qprint_escape_nonascii; |
| 141 | |
| 142 | /* Nonzero means print (quote foo) forms as 'foo, etc. */ |
| 143 | |
| 144 | int print_quoted; |
| 145 | |
| 146 | /* Non-nil means print #: before uninterned symbols. */ |
| 147 | |
| 148 | Lisp_Object Vprint_gensym; |
| 149 | |
| 150 | /* Non-nil means print recursive structures using #n= and #n# syntax. */ |
| 151 | |
| 152 | Lisp_Object Vprint_circle; |
| 153 | |
| 154 | /* Non-nil means keep continuous number for #n= and #n# syntax |
| 155 | between several print functions. */ |
| 156 | |
| 157 | Lisp_Object Vprint_continuous_numbering; |
| 158 | |
| 159 | /* Vprint_number_table is a vector like [OBJ1 STAT1 OBJ2 STAT2 ...], |
| 160 | where OBJn are objects going to be printed, and STATn are their status, |
| 161 | which may be different meanings during process. See the comments of |
| 162 | the functions print and print_preprocess for details. |
| 163 | print_number_index keeps the last position the next object should be added, |
| 164 | twice of which is the actual vector position in Vprint_number_table. */ |
| 165 | int print_number_index; |
| 166 | Lisp_Object Vprint_number_table; |
| 167 | |
| 168 | /* PRINT_NUMBER_OBJECT returns the I'th object in Vprint_number_table TABLE. |
| 169 | PRINT_NUMBER_STATUS returns the status of the I'th object in TABLE. |
| 170 | See the comment of the variable Vprint_number_table. */ |
| 171 | #define PRINT_NUMBER_OBJECT(table,i) XVECTOR ((table))->contents[(i) * 2] |
| 172 | #define PRINT_NUMBER_STATUS(table,i) XVECTOR ((table))->contents[(i) * 2 + 1] |
| 173 | |
| 174 | /* Nonzero means print newline to stdout before next minibuffer message. |
| 175 | Defined in xdisp.c */ |
| 176 | |
| 177 | extern int noninteractive_need_newline; |
| 178 | |
| 179 | extern int minibuffer_auto_raise; |
| 180 | |
| 181 | #ifdef MAX_PRINT_CHARS |
| 182 | static int print_chars; |
| 183 | static int max_print; |
| 184 | #endif /* MAX_PRINT_CHARS */ |
| 185 | |
| 186 | void print_interval (); |
| 187 | |
| 188 | \f |
| 189 | /* Low level output routines for characters and strings */ |
| 190 | |
| 191 | /* Lisp functions to do output using a stream |
| 192 | must have the stream in a variable called printcharfun |
| 193 | and must start with PRINTPREPARE, end with PRINTFINISH, |
| 194 | and use PRINTDECLARE to declare common variables. |
| 195 | Use PRINTCHAR to output one character, |
| 196 | or call strout to output a block of characters. */ |
| 197 | |
| 198 | #define PRINTDECLARE \ |
| 199 | struct buffer *old = current_buffer; \ |
| 200 | int old_point = -1, start_point; \ |
| 201 | int old_point_byte, start_point_byte; \ |
| 202 | int specpdl_count = specpdl_ptr - specpdl; \ |
| 203 | int free_print_buffer = 0; \ |
| 204 | int multibyte = !NILP (current_buffer->enable_multibyte_characters); \ |
| 205 | Lisp_Object original |
| 206 | |
| 207 | #define PRINTPREPARE \ |
| 208 | original = printcharfun; \ |
| 209 | if (NILP (printcharfun)) printcharfun = Qt; \ |
| 210 | if (BUFFERP (printcharfun)) \ |
| 211 | { \ |
| 212 | if (XBUFFER (printcharfun) != current_buffer) \ |
| 213 | Fset_buffer (printcharfun); \ |
| 214 | printcharfun = Qnil; \ |
| 215 | } \ |
| 216 | if (MARKERP (printcharfun)) \ |
| 217 | { \ |
| 218 | if (!(XMARKER (original)->buffer)) \ |
| 219 | error ("Marker does not point anywhere"); \ |
| 220 | if (XMARKER (original)->buffer != current_buffer) \ |
| 221 | set_buffer_internal (XMARKER (original)->buffer); \ |
| 222 | old_point = PT; \ |
| 223 | old_point_byte = PT_BYTE; \ |
| 224 | SET_PT_BOTH (marker_position (printcharfun), \ |
| 225 | marker_byte_position (printcharfun)); \ |
| 226 | start_point = PT; \ |
| 227 | start_point_byte = PT_BYTE; \ |
| 228 | printcharfun = Qnil; \ |
| 229 | } \ |
| 230 | if (NILP (printcharfun)) \ |
| 231 | { \ |
| 232 | Lisp_Object string; \ |
| 233 | if (NILP (current_buffer->enable_multibyte_characters) \ |
| 234 | && ! print_escape_multibyte) \ |
| 235 | specbind (Qprint_escape_multibyte, Qt); \ |
| 236 | if (! NILP (current_buffer->enable_multibyte_characters) \ |
| 237 | && ! print_escape_nonascii) \ |
| 238 | specbind (Qprint_escape_nonascii, Qt); \ |
| 239 | if (print_buffer != 0) \ |
| 240 | { \ |
| 241 | string = make_string_from_bytes (print_buffer, \ |
| 242 | print_buffer_pos, \ |
| 243 | print_buffer_pos_byte); \ |
| 244 | record_unwind_protect (print_unwind, string); \ |
| 245 | } \ |
| 246 | else \ |
| 247 | { \ |
| 248 | print_buffer_size = 1000; \ |
| 249 | print_buffer = (char *) xmalloc (print_buffer_size); \ |
| 250 | free_print_buffer = 1; \ |
| 251 | } \ |
| 252 | print_buffer_pos = 0; \ |
| 253 | print_buffer_pos_byte = 0; \ |
| 254 | } \ |
| 255 | if (EQ (printcharfun, Qt)) \ |
| 256 | setup_echo_area_for_printing (multibyte); |
| 257 | |
| 258 | #define PRINTFINISH \ |
| 259 | if (NILP (printcharfun)) \ |
| 260 | { \ |
| 261 | if (print_buffer_pos != print_buffer_pos_byte \ |
| 262 | && NILP (current_buffer->enable_multibyte_characters)) \ |
| 263 | { \ |
| 264 | unsigned char *temp \ |
| 265 | = (unsigned char *) alloca (print_buffer_pos + 1); \ |
| 266 | copy_text (print_buffer, temp, print_buffer_pos_byte, \ |
| 267 | 1, 0); \ |
| 268 | insert_1_both (temp, print_buffer_pos, \ |
| 269 | print_buffer_pos, 0, 1, 0); \ |
| 270 | } \ |
| 271 | else \ |
| 272 | insert_1_both (print_buffer, print_buffer_pos, \ |
| 273 | print_buffer_pos_byte, 0, 1, 0); \ |
| 274 | } \ |
| 275 | if (free_print_buffer) \ |
| 276 | { \ |
| 277 | xfree (print_buffer); \ |
| 278 | print_buffer = 0; \ |
| 279 | } \ |
| 280 | unbind_to (specpdl_count, Qnil); \ |
| 281 | if (MARKERP (original)) \ |
| 282 | set_marker_both (original, Qnil, PT, PT_BYTE); \ |
| 283 | if (old_point >= 0) \ |
| 284 | SET_PT_BOTH (old_point + (old_point >= start_point \ |
| 285 | ? PT - start_point : 0), \ |
| 286 | old_point_byte + (old_point_byte >= start_point_byte \ |
| 287 | ? PT_BYTE - start_point_byte : 0)); \ |
| 288 | if (old != current_buffer) \ |
| 289 | set_buffer_internal (old); |
| 290 | |
| 291 | #define PRINTCHAR(ch) printchar (ch, printcharfun) |
| 292 | |
| 293 | /* This is used to restore the saved contents of print_buffer |
| 294 | when there is a recursive call to print. */ |
| 295 | |
| 296 | static Lisp_Object |
| 297 | print_unwind (saved_text) |
| 298 | Lisp_Object saved_text; |
| 299 | { |
| 300 | bcopy (XSTRING (saved_text)->data, print_buffer, XSTRING (saved_text)->size); |
| 301 | } |
| 302 | |
| 303 | |
| 304 | /* Print character CH using method FUN. FUN nil means print to |
| 305 | print_buffer. FUN t means print to echo area or stdout if |
| 306 | non-interactive. If FUN is neither nil nor t, call FUN with CH as |
| 307 | argument. */ |
| 308 | |
| 309 | static void |
| 310 | printchar (ch, fun) |
| 311 | unsigned int ch; |
| 312 | Lisp_Object fun; |
| 313 | { |
| 314 | #ifdef MAX_PRINT_CHARS |
| 315 | if (max_print) |
| 316 | print_chars++; |
| 317 | #endif /* MAX_PRINT_CHARS */ |
| 318 | |
| 319 | if (!NILP (fun) && !EQ (fun, Qt)) |
| 320 | call1 (fun, make_number (ch)); |
| 321 | else |
| 322 | { |
| 323 | unsigned char work[4], *str; |
| 324 | int len = CHAR_STRING (ch, work, str); |
| 325 | |
| 326 | QUIT; |
| 327 | |
| 328 | if (NILP (fun)) |
| 329 | { |
| 330 | if (print_buffer_pos_byte + len >= print_buffer_size) |
| 331 | print_buffer = (char *) xrealloc (print_buffer, |
| 332 | print_buffer_size *= 2); |
| 333 | bcopy (str, print_buffer + print_buffer_pos_byte, len); |
| 334 | print_buffer_pos += 1; |
| 335 | print_buffer_pos_byte += len; |
| 336 | } |
| 337 | else if (noninteractive) |
| 338 | { |
| 339 | fwrite (str, 1, len, stdout); |
| 340 | noninteractive_need_newline = 1; |
| 341 | } |
| 342 | else |
| 343 | { |
| 344 | int multibyte_p |
| 345 | = !NILP (current_buffer->enable_multibyte_characters); |
| 346 | |
| 347 | if (!message_buf_print) |
| 348 | setup_echo_area_for_printing (multibyte_p); |
| 349 | |
| 350 | insert_char (ch); |
| 351 | message_dolog (str, len, 0, multibyte_p); |
| 352 | } |
| 353 | } |
| 354 | } |
| 355 | |
| 356 | |
| 357 | /* Output SIZE characters, SIZE_BYTE bytes from string PTR using |
| 358 | method PRINTCHARFUN. If SIZE < 0, use the string length of PTR for |
| 359 | both SIZE and SIZE_BYTE. PRINTCHARFUN nil means output to |
| 360 | print_buffer. PRINTCHARFUN t means output to the echo area or to |
| 361 | stdout if non-interactive. If neither nil nor t, call Lisp |
| 362 | function PRINTCHARFUN for each character printed. MULTIBYTE |
| 363 | non-zero means PTR contains multibyte characters. */ |
| 364 | |
| 365 | static void |
| 366 | strout (ptr, size, size_byte, printcharfun, multibyte) |
| 367 | char *ptr; |
| 368 | int size, size_byte; |
| 369 | Lisp_Object printcharfun; |
| 370 | int multibyte; |
| 371 | { |
| 372 | if (size < 0) |
| 373 | size_byte = size = strlen (ptr); |
| 374 | |
| 375 | if (NILP (printcharfun)) |
| 376 | { |
| 377 | if (print_buffer_pos_byte + size_byte > print_buffer_size) |
| 378 | { |
| 379 | print_buffer_size = print_buffer_size * 2 + size_byte; |
| 380 | print_buffer = (char *) xrealloc (print_buffer, |
| 381 | print_buffer_size); |
| 382 | } |
| 383 | bcopy (ptr, print_buffer + print_buffer_pos_byte, size_byte); |
| 384 | print_buffer_pos += size; |
| 385 | print_buffer_pos_byte += size_byte; |
| 386 | |
| 387 | #ifdef MAX_PRINT_CHARS |
| 388 | if (max_print) |
| 389 | print_chars += size; |
| 390 | #endif /* MAX_PRINT_CHARS */ |
| 391 | } |
| 392 | else if (noninteractive) |
| 393 | { |
| 394 | fwrite (ptr, 1, size_byte, stdout); |
| 395 | noninteractive_need_newline = 1; |
| 396 | } |
| 397 | else if (EQ (printcharfun, Qt)) |
| 398 | { |
| 399 | /* Output to echo area. We're trying to avoid a little overhead |
| 400 | here, that's the reason we don't call printchar to do the |
| 401 | job. */ |
| 402 | int i; |
| 403 | int multibyte_p |
| 404 | = !NILP (current_buffer->enable_multibyte_characters); |
| 405 | |
| 406 | if (!message_buf_print) |
| 407 | setup_echo_area_for_printing (multibyte_p); |
| 408 | |
| 409 | message_dolog (ptr, size_byte, 0, multibyte_p); |
| 410 | |
| 411 | if (size == size_byte) |
| 412 | { |
| 413 | for (i = 0; i < size; ++i) |
| 414 | insert_char (*ptr++); |
| 415 | } |
| 416 | else |
| 417 | { |
| 418 | int len; |
| 419 | for (i = 0; i < size_byte; i += len) |
| 420 | { |
| 421 | int ch = STRING_CHAR_AND_LENGTH (ptr + i, size_byte - i, len); |
| 422 | insert_char (ch); |
| 423 | } |
| 424 | } |
| 425 | |
| 426 | #ifdef MAX_PRINT_CHARS |
| 427 | if (max_print) |
| 428 | print_chars += size; |
| 429 | #endif /* MAX_PRINT_CHARS */ |
| 430 | } |
| 431 | else |
| 432 | { |
| 433 | /* PRINTCHARFUN is a Lisp function. */ |
| 434 | int i = 0; |
| 435 | |
| 436 | if (size == size_byte) |
| 437 | { |
| 438 | while (i < size_byte) |
| 439 | { |
| 440 | int ch = ptr[i++]; |
| 441 | PRINTCHAR (ch); |
| 442 | } |
| 443 | } |
| 444 | else |
| 445 | { |
| 446 | while (i < size_byte) |
| 447 | { |
| 448 | /* Here, we must convert each multi-byte form to the |
| 449 | corresponding character code before handing it to |
| 450 | PRINTCHAR. */ |
| 451 | int len; |
| 452 | int ch = STRING_CHAR_AND_LENGTH (ptr + i, size_byte - i, len); |
| 453 | PRINTCHAR (ch); |
| 454 | i += len; |
| 455 | } |
| 456 | } |
| 457 | } |
| 458 | } |
| 459 | |
| 460 | /* Print the contents of a string STRING using PRINTCHARFUN. |
| 461 | It isn't safe to use strout in many cases, |
| 462 | because printing one char can relocate. */ |
| 463 | |
| 464 | static void |
| 465 | print_string (string, printcharfun) |
| 466 | Lisp_Object string; |
| 467 | Lisp_Object printcharfun; |
| 468 | { |
| 469 | if (EQ (printcharfun, Qt) || NILP (printcharfun)) |
| 470 | { |
| 471 | int chars; |
| 472 | |
| 473 | if (STRING_MULTIBYTE (string)) |
| 474 | chars = XSTRING (string)->size; |
| 475 | else if (EQ (printcharfun, Qt) |
| 476 | ? ! NILP (buffer_defaults.enable_multibyte_characters) |
| 477 | : ! NILP (current_buffer->enable_multibyte_characters)) |
| 478 | chars = multibyte_chars_in_text (XSTRING (string)->data, |
| 479 | STRING_BYTES (XSTRING (string))); |
| 480 | else |
| 481 | chars = STRING_BYTES (XSTRING (string)); |
| 482 | |
| 483 | /* strout is safe for output to a frame (echo area) or to print_buffer. */ |
| 484 | strout (XSTRING (string)->data, |
| 485 | chars, STRING_BYTES (XSTRING (string)), |
| 486 | printcharfun, STRING_MULTIBYTE (string)); |
| 487 | } |
| 488 | else |
| 489 | { |
| 490 | /* Otherwise, string may be relocated by printing one char. |
| 491 | So re-fetch the string address for each character. */ |
| 492 | int i; |
| 493 | int size = XSTRING (string)->size; |
| 494 | int size_byte = STRING_BYTES (XSTRING (string)); |
| 495 | struct gcpro gcpro1; |
| 496 | GCPRO1 (string); |
| 497 | if (size == size_byte) |
| 498 | for (i = 0; i < size; i++) |
| 499 | PRINTCHAR (XSTRING (string)->data[i]); |
| 500 | else |
| 501 | for (i = 0; i < size_byte; i++) |
| 502 | { |
| 503 | /* Here, we must convert each multi-byte form to the |
| 504 | corresponding character code before handing it to PRINTCHAR. */ |
| 505 | int len; |
| 506 | int ch = STRING_CHAR_AND_LENGTH (XSTRING (string)->data + i, |
| 507 | size_byte - i, len); |
| 508 | if (!CHAR_VALID_P (ch, 0)) |
| 509 | { |
| 510 | ch = XSTRING (string)->data[i]; |
| 511 | len = 1; |
| 512 | } |
| 513 | PRINTCHAR (ch); |
| 514 | i += len; |
| 515 | } |
| 516 | UNGCPRO; |
| 517 | } |
| 518 | } |
| 519 | \f |
| 520 | DEFUN ("write-char", Fwrite_char, Swrite_char, 1, 2, 0, |
| 521 | "Output character CHARACTER to stream PRINTCHARFUN.\n\ |
| 522 | PRINTCHARFUN defaults to the value of `standard-output' (which see).") |
| 523 | (character, printcharfun) |
| 524 | Lisp_Object character, printcharfun; |
| 525 | { |
| 526 | PRINTDECLARE; |
| 527 | |
| 528 | if (NILP (printcharfun)) |
| 529 | printcharfun = Vstandard_output; |
| 530 | CHECK_NUMBER (character, 0); |
| 531 | PRINTPREPARE; |
| 532 | PRINTCHAR (XINT (character)); |
| 533 | PRINTFINISH; |
| 534 | return character; |
| 535 | } |
| 536 | |
| 537 | /* Used from outside of print.c to print a block of SIZE |
| 538 | single-byte chars at DATA on the default output stream. |
| 539 | Do not use this on the contents of a Lisp string. */ |
| 540 | |
| 541 | void |
| 542 | write_string (data, size) |
| 543 | char *data; |
| 544 | int size; |
| 545 | { |
| 546 | PRINTDECLARE; |
| 547 | Lisp_Object printcharfun; |
| 548 | |
| 549 | printcharfun = Vstandard_output; |
| 550 | |
| 551 | PRINTPREPARE; |
| 552 | strout (data, size, size, printcharfun, 0); |
| 553 | PRINTFINISH; |
| 554 | } |
| 555 | |
| 556 | /* Used from outside of print.c to print a block of SIZE |
| 557 | single-byte chars at DATA on a specified stream PRINTCHARFUN. |
| 558 | Do not use this on the contents of a Lisp string. */ |
| 559 | |
| 560 | void |
| 561 | write_string_1 (data, size, printcharfun) |
| 562 | char *data; |
| 563 | int size; |
| 564 | Lisp_Object printcharfun; |
| 565 | { |
| 566 | PRINTDECLARE; |
| 567 | |
| 568 | PRINTPREPARE; |
| 569 | strout (data, size, size, printcharfun, 0); |
| 570 | PRINTFINISH; |
| 571 | } |
| 572 | |
| 573 | |
| 574 | void |
| 575 | temp_output_buffer_setup (bufname) |
| 576 | char *bufname; |
| 577 | { |
| 578 | int count = specpdl_ptr - specpdl; |
| 579 | register struct buffer *old = current_buffer; |
| 580 | register Lisp_Object buf; |
| 581 | |
| 582 | record_unwind_protect (set_buffer_if_live, Fcurrent_buffer ()); |
| 583 | |
| 584 | Fset_buffer (Fget_buffer_create (build_string (bufname))); |
| 585 | |
| 586 | current_buffer->directory = old->directory; |
| 587 | current_buffer->read_only = Qnil; |
| 588 | current_buffer->filename = Qnil; |
| 589 | current_buffer->undo_list = Qt; |
| 590 | current_buffer->overlays_before = Qnil; |
| 591 | current_buffer->overlays_after = Qnil; |
| 592 | current_buffer->enable_multibyte_characters |
| 593 | = buffer_defaults.enable_multibyte_characters; |
| 594 | Ferase_buffer (); |
| 595 | XSETBUFFER (buf, current_buffer); |
| 596 | |
| 597 | call1 (Vrun_hooks, Qtemp_buffer_setup_hook); |
| 598 | |
| 599 | unbind_to (count, Qnil); |
| 600 | |
| 601 | specbind (Qstandard_output, buf); |
| 602 | } |
| 603 | |
| 604 | Lisp_Object |
| 605 | internal_with_output_to_temp_buffer (bufname, function, args) |
| 606 | char *bufname; |
| 607 | Lisp_Object (*function) P_ ((Lisp_Object)); |
| 608 | Lisp_Object args; |
| 609 | { |
| 610 | int count = specpdl_ptr - specpdl; |
| 611 | Lisp_Object buf, val; |
| 612 | struct gcpro gcpro1; |
| 613 | |
| 614 | GCPRO1 (args); |
| 615 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); |
| 616 | temp_output_buffer_setup (bufname); |
| 617 | buf = Vstandard_output; |
| 618 | UNGCPRO; |
| 619 | |
| 620 | val = (*function) (args); |
| 621 | |
| 622 | GCPRO1 (val); |
| 623 | temp_output_buffer_show (buf); |
| 624 | UNGCPRO; |
| 625 | |
| 626 | return unbind_to (count, val); |
| 627 | } |
| 628 | |
| 629 | DEFUN ("with-output-to-temp-buffer", Fwith_output_to_temp_buffer, Swith_output_to_temp_buffer, |
| 630 | 1, UNEVALLED, 0, |
| 631 | "Bind `standard-output' to buffer BUFNAME, eval BODY, then show that buffer.\n\ |
| 632 | The buffer is cleared out initially, and marked as unmodified when done.\n\ |
| 633 | All output done by BODY is inserted in that buffer by default.\n\ |
| 634 | The buffer is displayed in another window, but not selected.\n\ |
| 635 | The value of the last form in BODY is returned.\n\ |
| 636 | If BODY does not finish normally, the buffer BUFNAME is not displayed.\n\ |
| 637 | \n\ |
| 638 | The hook `temp-buffer-setup-hook' is run before BODY,\n\ |
| 639 | with the buffer BUFNAME temporarily current.\n\ |
| 640 | The hook `temp-buffer-show-hook' is run after the buffer is displayed,\n\ |
| 641 | with the buffer temporarily current, and the window that was used\n\ |
| 642 | to display it temporarily selected.\n\ |
| 643 | \n\ |
| 644 | If variable `temp-buffer-show-function' is non-nil, call it at the end\n\ |
| 645 | to get the buffer displayed instead of just displaying the non-selected\n\ |
| 646 | buffer and calling the hook. It gets one argument, the buffer to display.") |
| 647 | (args) |
| 648 | Lisp_Object args; |
| 649 | { |
| 650 | struct gcpro gcpro1; |
| 651 | Lisp_Object name; |
| 652 | int count = specpdl_ptr - specpdl; |
| 653 | Lisp_Object buf, val; |
| 654 | |
| 655 | GCPRO1(args); |
| 656 | name = Feval (Fcar (args)); |
| 657 | UNGCPRO; |
| 658 | |
| 659 | CHECK_STRING (name, 0); |
| 660 | temp_output_buffer_setup (XSTRING (name)->data); |
| 661 | buf = Vstandard_output; |
| 662 | |
| 663 | val = Fprogn (Fcdr (args)); |
| 664 | |
| 665 | temp_output_buffer_show (buf); |
| 666 | |
| 667 | return unbind_to (count, val); |
| 668 | } |
| 669 | |
| 670 | \f |
| 671 | static void print (); |
| 672 | static void print_preprocess (); |
| 673 | #ifdef USE_TEXT_PROPERTIES |
| 674 | static void print_preprocess_string (); |
| 675 | #endif /* USE_TEXT_PROPERTIES */ |
| 676 | static void print_object (); |
| 677 | |
| 678 | DEFUN ("terpri", Fterpri, Sterpri, 0, 1, 0, |
| 679 | "Output a newline to stream PRINTCHARFUN.\n\ |
| 680 | If PRINTCHARFUN is omitted or nil, the value of `standard-output' is used.") |
| 681 | (printcharfun) |
| 682 | Lisp_Object printcharfun; |
| 683 | { |
| 684 | PRINTDECLARE; |
| 685 | |
| 686 | if (NILP (printcharfun)) |
| 687 | printcharfun = Vstandard_output; |
| 688 | PRINTPREPARE; |
| 689 | PRINTCHAR ('\n'); |
| 690 | PRINTFINISH; |
| 691 | return Qt; |
| 692 | } |
| 693 | |
| 694 | DEFUN ("prin1", Fprin1, Sprin1, 1, 2, 0, |
| 695 | "Output the printed representation of OBJECT, any Lisp object.\n\ |
| 696 | Quoting characters are printed when needed to make output that `read'\n\ |
| 697 | can handle, whenever this is possible.\n\ |
| 698 | Output stream is PRINTCHARFUN, or value of `standard-output' (which see).") |
| 699 | (object, printcharfun) |
| 700 | Lisp_Object object, printcharfun; |
| 701 | { |
| 702 | PRINTDECLARE; |
| 703 | |
| 704 | #ifdef MAX_PRINT_CHARS |
| 705 | max_print = 0; |
| 706 | #endif /* MAX_PRINT_CHARS */ |
| 707 | if (NILP (printcharfun)) |
| 708 | printcharfun = Vstandard_output; |
| 709 | PRINTPREPARE; |
| 710 | print (object, printcharfun, 1); |
| 711 | PRINTFINISH; |
| 712 | return object; |
| 713 | } |
| 714 | |
| 715 | /* a buffer which is used to hold output being built by prin1-to-string */ |
| 716 | Lisp_Object Vprin1_to_string_buffer; |
| 717 | |
| 718 | DEFUN ("prin1-to-string", Fprin1_to_string, Sprin1_to_string, 1, 2, 0, |
| 719 | "Return a string containing the printed representation of OBJECT,\n\ |
| 720 | any Lisp object. Quoting characters are used when needed to make output\n\ |
| 721 | that `read' can handle, whenever this is possible, unless the optional\n\ |
| 722 | second argument NOESCAPE is non-nil.") |
| 723 | (object, noescape) |
| 724 | Lisp_Object object, noescape; |
| 725 | { |
| 726 | PRINTDECLARE; |
| 727 | Lisp_Object printcharfun; |
| 728 | struct gcpro gcpro1, gcpro2; |
| 729 | Lisp_Object tem; |
| 730 | |
| 731 | /* Save and restore this--we are altering a buffer |
| 732 | but we don't want to deactivate the mark just for that. |
| 733 | No need for specbind, since errors deactivate the mark. */ |
| 734 | tem = Vdeactivate_mark; |
| 735 | GCPRO2 (object, tem); |
| 736 | |
| 737 | printcharfun = Vprin1_to_string_buffer; |
| 738 | PRINTPREPARE; |
| 739 | print (object, printcharfun, NILP (noescape)); |
| 740 | /* Make Vprin1_to_string_buffer be the default buffer after PRINTFINSH */ |
| 741 | PRINTFINISH; |
| 742 | set_buffer_internal (XBUFFER (Vprin1_to_string_buffer)); |
| 743 | object = Fbuffer_string (); |
| 744 | |
| 745 | Ferase_buffer (); |
| 746 | set_buffer_internal (old); |
| 747 | |
| 748 | Vdeactivate_mark = tem; |
| 749 | UNGCPRO; |
| 750 | |
| 751 | return object; |
| 752 | } |
| 753 | |
| 754 | DEFUN ("princ", Fprinc, Sprinc, 1, 2, 0, |
| 755 | "Output the printed representation of OBJECT, any Lisp object.\n\ |
| 756 | No quoting characters are used; no delimiters are printed around\n\ |
| 757 | the contents of strings.\n\ |
| 758 | Output stream is PRINTCHARFUN, or value of standard-output (which see).") |
| 759 | (object, printcharfun) |
| 760 | Lisp_Object object, printcharfun; |
| 761 | { |
| 762 | PRINTDECLARE; |
| 763 | |
| 764 | if (NILP (printcharfun)) |
| 765 | printcharfun = Vstandard_output; |
| 766 | PRINTPREPARE; |
| 767 | print (object, printcharfun, 0); |
| 768 | PRINTFINISH; |
| 769 | return object; |
| 770 | } |
| 771 | |
| 772 | DEFUN ("print", Fprint, Sprint, 1, 2, 0, |
| 773 | "Output the printed representation of OBJECT, with newlines around it.\n\ |
| 774 | Quoting characters are printed when needed to make output that `read'\n\ |
| 775 | can handle, whenever this is possible.\n\ |
| 776 | Output stream is PRINTCHARFUN, or value of `standard-output' (which see).") |
| 777 | (object, printcharfun) |
| 778 | Lisp_Object object, printcharfun; |
| 779 | { |
| 780 | PRINTDECLARE; |
| 781 | struct gcpro gcpro1; |
| 782 | |
| 783 | #ifdef MAX_PRINT_CHARS |
| 784 | print_chars = 0; |
| 785 | max_print = MAX_PRINT_CHARS; |
| 786 | #endif /* MAX_PRINT_CHARS */ |
| 787 | if (NILP (printcharfun)) |
| 788 | printcharfun = Vstandard_output; |
| 789 | GCPRO1 (object); |
| 790 | PRINTPREPARE; |
| 791 | PRINTCHAR ('\n'); |
| 792 | print (object, printcharfun, 1); |
| 793 | PRINTCHAR ('\n'); |
| 794 | PRINTFINISH; |
| 795 | #ifdef MAX_PRINT_CHARS |
| 796 | max_print = 0; |
| 797 | print_chars = 0; |
| 798 | #endif /* MAX_PRINT_CHARS */ |
| 799 | UNGCPRO; |
| 800 | return object; |
| 801 | } |
| 802 | |
| 803 | /* The subroutine object for external-debugging-output is kept here |
| 804 | for the convenience of the debugger. */ |
| 805 | Lisp_Object Qexternal_debugging_output; |
| 806 | |
| 807 | DEFUN ("external-debugging-output", Fexternal_debugging_output, Sexternal_debugging_output, 1, 1, 0, |
| 808 | "Write CHARACTER to stderr.\n\ |
| 809 | You can call print while debugging emacs, and pass it this function\n\ |
| 810 | to make it write to the debugging output.\n") |
| 811 | (character) |
| 812 | Lisp_Object character; |
| 813 | { |
| 814 | CHECK_NUMBER (character, 0); |
| 815 | putc (XINT (character), stderr); |
| 816 | |
| 817 | #ifdef WINDOWSNT |
| 818 | /* Send the output to a debugger (nothing happens if there isn't one). */ |
| 819 | { |
| 820 | char buf[2] = {(char) XINT (character), '\0'}; |
| 821 | OutputDebugString (buf); |
| 822 | } |
| 823 | #endif |
| 824 | |
| 825 | return character; |
| 826 | } |
| 827 | |
| 828 | /* This is the interface for debugging printing. */ |
| 829 | |
| 830 | void |
| 831 | debug_print (arg) |
| 832 | Lisp_Object arg; |
| 833 | { |
| 834 | Fprin1 (arg, Qexternal_debugging_output); |
| 835 | fprintf (stderr, "\r\n"); |
| 836 | } |
| 837 | \f |
| 838 | DEFUN ("error-message-string", Ferror_message_string, Serror_message_string, |
| 839 | 1, 1, 0, |
| 840 | "Convert an error value (ERROR-SYMBOL . DATA) to an error message.") |
| 841 | (obj) |
| 842 | Lisp_Object obj; |
| 843 | { |
| 844 | struct buffer *old = current_buffer; |
| 845 | Lisp_Object value; |
| 846 | struct gcpro gcpro1; |
| 847 | |
| 848 | /* If OBJ is (error STRING), just return STRING. |
| 849 | That is not only faster, it also avoids the need to allocate |
| 850 | space here when the error is due to memory full. */ |
| 851 | if (CONSP (obj) && EQ (XCAR (obj), Qerror) |
| 852 | && CONSP (XCDR (obj)) |
| 853 | && STRINGP (XCAR (XCDR (obj))) |
| 854 | && NILP (XCDR (XCDR (obj)))) |
| 855 | return XCAR (XCDR (obj)); |
| 856 | |
| 857 | print_error_message (obj, Vprin1_to_string_buffer); |
| 858 | |
| 859 | set_buffer_internal (XBUFFER (Vprin1_to_string_buffer)); |
| 860 | value = Fbuffer_string (); |
| 861 | |
| 862 | GCPRO1 (value); |
| 863 | Ferase_buffer (); |
| 864 | set_buffer_internal (old); |
| 865 | UNGCPRO; |
| 866 | |
| 867 | return value; |
| 868 | } |
| 869 | |
| 870 | /* Print an error message for the error DATA |
| 871 | onto Lisp output stream STREAM (suitable for the print functions). */ |
| 872 | |
| 873 | void |
| 874 | print_error_message (data, stream) |
| 875 | Lisp_Object data, stream; |
| 876 | { |
| 877 | Lisp_Object errname, errmsg, file_error, tail; |
| 878 | struct gcpro gcpro1; |
| 879 | int i; |
| 880 | |
| 881 | errname = Fcar (data); |
| 882 | |
| 883 | if (EQ (errname, Qerror)) |
| 884 | { |
| 885 | data = Fcdr (data); |
| 886 | if (!CONSP (data)) data = Qnil; |
| 887 | errmsg = Fcar (data); |
| 888 | file_error = Qnil; |
| 889 | } |
| 890 | else |
| 891 | { |
| 892 | errmsg = Fget (errname, Qerror_message); |
| 893 | file_error = Fmemq (Qfile_error, |
| 894 | Fget (errname, Qerror_conditions)); |
| 895 | } |
| 896 | |
| 897 | /* Print an error message including the data items. */ |
| 898 | |
| 899 | tail = Fcdr_safe (data); |
| 900 | GCPRO1 (tail); |
| 901 | |
| 902 | /* For file-error, make error message by concatenating |
| 903 | all the data items. They are all strings. */ |
| 904 | if (!NILP (file_error) && CONSP (tail)) |
| 905 | errmsg = XCAR (tail), tail = XCDR (tail); |
| 906 | |
| 907 | if (STRINGP (errmsg)) |
| 908 | Fprinc (errmsg, stream); |
| 909 | else |
| 910 | write_string_1 ("peculiar error", -1, stream); |
| 911 | |
| 912 | for (i = 0; CONSP (tail); tail = Fcdr (tail), i++) |
| 913 | { |
| 914 | write_string_1 (i ? ", " : ": ", 2, stream); |
| 915 | if (!NILP (file_error)) |
| 916 | Fprinc (Fcar (tail), stream); |
| 917 | else |
| 918 | Fprin1 (Fcar (tail), stream); |
| 919 | } |
| 920 | UNGCPRO; |
| 921 | } |
| 922 | \f |
| 923 | #ifdef LISP_FLOAT_TYPE |
| 924 | |
| 925 | /* |
| 926 | * The buffer should be at least as large as the max string size of the |
| 927 | * largest float, printed in the biggest notation. This is undoubtedly |
| 928 | * 20d float_output_format, with the negative of the C-constant "HUGE" |
| 929 | * from <math.h>. |
| 930 | * |
| 931 | * On the vax the worst case is -1e38 in 20d format which takes 61 bytes. |
| 932 | * |
| 933 | * I assume that IEEE-754 format numbers can take 329 bytes for the worst |
| 934 | * case of -1e307 in 20d float_output_format. What is one to do (short of |
| 935 | * re-writing _doprnt to be more sane)? |
| 936 | * -wsr |
| 937 | */ |
| 938 | |
| 939 | void |
| 940 | float_to_string (buf, data) |
| 941 | unsigned char *buf; |
| 942 | double data; |
| 943 | { |
| 944 | unsigned char *cp; |
| 945 | int width; |
| 946 | |
| 947 | /* Check for plus infinity in a way that won't lose |
| 948 | if there is no plus infinity. */ |
| 949 | if (data == data / 2 && data > 1.0) |
| 950 | { |
| 951 | strcpy (buf, "1.0e+INF"); |
| 952 | return; |
| 953 | } |
| 954 | /* Likewise for minus infinity. */ |
| 955 | if (data == data / 2 && data < -1.0) |
| 956 | { |
| 957 | strcpy (buf, "-1.0e+INF"); |
| 958 | return; |
| 959 | } |
| 960 | /* Check for NaN in a way that won't fail if there are no NaNs. */ |
| 961 | if (! (data * 0.0 >= 0.0)) |
| 962 | { |
| 963 | strcpy (buf, "0.0e+NaN"); |
| 964 | return; |
| 965 | } |
| 966 | |
| 967 | if (NILP (Vfloat_output_format) |
| 968 | || !STRINGP (Vfloat_output_format)) |
| 969 | lose: |
| 970 | { |
| 971 | /* Generate the fewest number of digits that represent the |
| 972 | floating point value without losing information. |
| 973 | The following method is simple but a bit slow. |
| 974 | For ideas about speeding things up, please see: |
| 975 | |
| 976 | Guy L Steele Jr & Jon L White, How to print floating-point numbers |
| 977 | accurately. SIGPLAN notices 25, 6 (June 1990), 112-126. |
| 978 | |
| 979 | Robert G Burger & R Kent Dybvig, Printing floating point numbers |
| 980 | quickly and accurately, SIGPLAN notices 31, 5 (May 1996), 108-116. */ |
| 981 | |
| 982 | width = fabs (data) < DBL_MIN ? 1 : DBL_DIG; |
| 983 | do |
| 984 | sprintf (buf, "%.*g", width, data); |
| 985 | while (width++ < DOUBLE_DIGITS_BOUND && atof (buf) != data); |
| 986 | } |
| 987 | else /* oink oink */ |
| 988 | { |
| 989 | /* Check that the spec we have is fully valid. |
| 990 | This means not only valid for printf, |
| 991 | but meant for floats, and reasonable. */ |
| 992 | cp = XSTRING (Vfloat_output_format)->data; |
| 993 | |
| 994 | if (cp[0] != '%') |
| 995 | goto lose; |
| 996 | if (cp[1] != '.') |
| 997 | goto lose; |
| 998 | |
| 999 | cp += 2; |
| 1000 | |
| 1001 | /* Check the width specification. */ |
| 1002 | width = -1; |
| 1003 | if ('0' <= *cp && *cp <= '9') |
| 1004 | { |
| 1005 | width = 0; |
| 1006 | do |
| 1007 | width = (width * 10) + (*cp++ - '0'); |
| 1008 | while (*cp >= '0' && *cp <= '9'); |
| 1009 | |
| 1010 | /* A precision of zero is valid only for %f. */ |
| 1011 | if (width > DBL_DIG |
| 1012 | || (width == 0 && *cp != 'f')) |
| 1013 | goto lose; |
| 1014 | } |
| 1015 | |
| 1016 | if (*cp != 'e' && *cp != 'f' && *cp != 'g') |
| 1017 | goto lose; |
| 1018 | |
| 1019 | if (cp[1] != 0) |
| 1020 | goto lose; |
| 1021 | |
| 1022 | sprintf (buf, XSTRING (Vfloat_output_format)->data, data); |
| 1023 | } |
| 1024 | |
| 1025 | /* Make sure there is a decimal point with digit after, or an |
| 1026 | exponent, so that the value is readable as a float. But don't do |
| 1027 | this with "%.0f"; it's valid for that not to produce a decimal |
| 1028 | point. Note that width can be 0 only for %.0f. */ |
| 1029 | if (width != 0) |
| 1030 | { |
| 1031 | for (cp = buf; *cp; cp++) |
| 1032 | if ((*cp < '0' || *cp > '9') && *cp != '-') |
| 1033 | break; |
| 1034 | |
| 1035 | if (*cp == '.' && cp[1] == 0) |
| 1036 | { |
| 1037 | cp[1] = '0'; |
| 1038 | cp[2] = 0; |
| 1039 | } |
| 1040 | |
| 1041 | if (*cp == 0) |
| 1042 | { |
| 1043 | *cp++ = '.'; |
| 1044 | *cp++ = '0'; |
| 1045 | *cp++ = 0; |
| 1046 | } |
| 1047 | } |
| 1048 | } |
| 1049 | #endif /* LISP_FLOAT_TYPE */ |
| 1050 | \f |
| 1051 | static void |
| 1052 | print (obj, printcharfun, escapeflag) |
| 1053 | Lisp_Object obj; |
| 1054 | register Lisp_Object printcharfun; |
| 1055 | int escapeflag; |
| 1056 | { |
| 1057 | print_depth = 0; |
| 1058 | |
| 1059 | /* Reset print_number_index and Vprint_number_table only when |
| 1060 | the variable Vprint_continuous_numbering is nil. Otherwise, |
| 1061 | the values of these variables will be kept between several |
| 1062 | print functions. */ |
| 1063 | if (NILP (Vprint_continuous_numbering)) |
| 1064 | { |
| 1065 | print_number_index = 0; |
| 1066 | Vprint_number_table = Qnil; |
| 1067 | } |
| 1068 | |
| 1069 | /* Construct Vprint_number_table for print-gensym and print-circle. */ |
| 1070 | if (!NILP (Vprint_gensym) || !NILP (Vprint_circle)) |
| 1071 | { |
| 1072 | int i, start, index; |
| 1073 | /* Construct Vprint_number_table. */ |
| 1074 | start = index = print_number_index; |
| 1075 | print_preprocess (obj); |
| 1076 | /* Remove unnecessary objects, which appear only once in OBJ; |
| 1077 | that is, whose status is Qnil. */ |
| 1078 | for (i = start; i < print_number_index; i++) |
| 1079 | if (!NILP (PRINT_NUMBER_STATUS (Vprint_number_table, i))) |
| 1080 | { |
| 1081 | PRINT_NUMBER_OBJECT (Vprint_number_table, index) |
| 1082 | = PRINT_NUMBER_OBJECT (Vprint_number_table, i); |
| 1083 | /* Reset the status field for the next print step. Now this |
| 1084 | field means whether the object has already been printed. */ |
| 1085 | PRINT_NUMBER_STATUS (Vprint_number_table, index) = Qnil; |
| 1086 | index++; |
| 1087 | } |
| 1088 | print_number_index = index; |
| 1089 | } |
| 1090 | |
| 1091 | print_object (obj, printcharfun, escapeflag); |
| 1092 | } |
| 1093 | |
| 1094 | /* Construct Vprint_number_table according to the structure of OBJ. |
| 1095 | OBJ itself and all its elements will be added to Vprint_number_table |
| 1096 | recursively if it is a list, vector, compiled function, char-table, |
| 1097 | string (its text properties will be traced), or a symbol that has |
| 1098 | no obarray (this is for the print-gensym feature). |
| 1099 | The status fields of Vprint_number_table mean whether each object appears |
| 1100 | more than once in OBJ: Qnil at the first time, and Qt after that . */ |
| 1101 | static void |
| 1102 | print_preprocess (obj) |
| 1103 | Lisp_Object obj; |
| 1104 | { |
| 1105 | int i, size; |
| 1106 | |
| 1107 | loop: |
| 1108 | if (STRINGP (obj) || CONSP (obj) || VECTORP (obj) |
| 1109 | || COMPILEDP (obj) || CHAR_TABLE_P (obj) |
| 1110 | || (! NILP (Vprint_gensym) |
| 1111 | && SYMBOLP (obj) && NILP (XSYMBOL (obj)->obarray))) |
| 1112 | { |
| 1113 | for (i = 0; i < print_number_index; i++) |
| 1114 | if (PRINT_NUMBER_OBJECT (Vprint_number_table, i) == obj) |
| 1115 | { |
| 1116 | /* OBJ appears more than once. Let's remember that. */ |
| 1117 | PRINT_NUMBER_STATUS (Vprint_number_table, i) = Qt; |
| 1118 | return; |
| 1119 | } |
| 1120 | |
| 1121 | /* OBJ is not yet recorded. Let's add to the table. */ |
| 1122 | if (print_number_index == 0) |
| 1123 | { |
| 1124 | /* Initialize the table. */ |
| 1125 | Vprint_number_table = Fmake_vector (make_number (40), Qnil); |
| 1126 | } |
| 1127 | else if (XVECTOR (Vprint_number_table)->size == print_number_index * 2) |
| 1128 | { |
| 1129 | /* Reallocate the table. */ |
| 1130 | int i = print_number_index * 4; |
| 1131 | Lisp_Object old_table = Vprint_number_table; |
| 1132 | Vprint_number_table = Fmake_vector (make_number (i), Qnil); |
| 1133 | for (i = 0; i < print_number_index; i++) |
| 1134 | { |
| 1135 | PRINT_NUMBER_OBJECT (Vprint_number_table, i) |
| 1136 | = PRINT_NUMBER_OBJECT (old_table, i); |
| 1137 | PRINT_NUMBER_STATUS (Vprint_number_table, i) |
| 1138 | = PRINT_NUMBER_STATUS (old_table, i); |
| 1139 | } |
| 1140 | } |
| 1141 | PRINT_NUMBER_OBJECT (Vprint_number_table, print_number_index) = obj; |
| 1142 | /* If Vprint_continuous_numbering is non-nil and OBJ is a gensym, |
| 1143 | always print the gensym with a number. This is a special for |
| 1144 | the lisp function byte-compile-output-docform. */ |
| 1145 | if (! NILP (Vprint_continuous_numbering) && SYMBOLP (obj) |
| 1146 | && NILP (XSYMBOL (obj)->obarray)) |
| 1147 | PRINT_NUMBER_STATUS (Vprint_number_table, print_number_index) = Qt; |
| 1148 | print_number_index++; |
| 1149 | |
| 1150 | switch (XGCTYPE (obj)) |
| 1151 | { |
| 1152 | case Lisp_String: |
| 1153 | #ifdef USE_TEXT_PROPERTIES |
| 1154 | /* A string may have text properties, which can be circular. */ |
| 1155 | traverse_intervals (XSTRING (obj)->intervals, 0, 0, |
| 1156 | print_preprocess_string, Qnil); |
| 1157 | #endif /* USE_TEXT_PROPERTIES */ |
| 1158 | break; |
| 1159 | |
| 1160 | case Lisp_Cons: |
| 1161 | print_preprocess (XCAR (obj)); |
| 1162 | obj = XCDR (obj); |
| 1163 | goto loop; |
| 1164 | |
| 1165 | case Lisp_Vectorlike: |
| 1166 | size = XVECTOR (obj)->size & PSEUDOVECTOR_SIZE_MASK; |
| 1167 | for (i = 0; i < size; i++) |
| 1168 | print_preprocess (XVECTOR (obj)->contents[i]); |
| 1169 | } |
| 1170 | } |
| 1171 | } |
| 1172 | |
| 1173 | #ifdef USE_TEXT_PROPERTIES |
| 1174 | static void |
| 1175 | print_preprocess_string (interval, arg) |
| 1176 | INTERVAL interval; |
| 1177 | Lisp_Object arg; |
| 1178 | { |
| 1179 | print_preprocess (interval->plist); |
| 1180 | } |
| 1181 | #endif /* USE_TEXT_PROPERTIES */ |
| 1182 | |
| 1183 | static void |
| 1184 | print_object (obj, printcharfun, escapeflag) |
| 1185 | Lisp_Object obj; |
| 1186 | register Lisp_Object printcharfun; |
| 1187 | int escapeflag; |
| 1188 | { |
| 1189 | char buf[30]; |
| 1190 | |
| 1191 | QUIT; |
| 1192 | |
| 1193 | /* Detect circularities and truncate them. */ |
| 1194 | if (STRINGP (obj) || CONSP (obj) || VECTORP (obj) |
| 1195 | || COMPILEDP (obj) || CHAR_TABLE_P (obj) |
| 1196 | || (! NILP (Vprint_gensym) |
| 1197 | && SYMBOLP (obj) && NILP (XSYMBOL (obj)->obarray))) |
| 1198 | { |
| 1199 | if (NILP (Vprint_circle) && NILP (Vprint_gensym)) |
| 1200 | { |
| 1201 | /* Simple but incomplete way. */ |
| 1202 | int i; |
| 1203 | for (i = 0; i < print_depth; i++) |
| 1204 | if (EQ (obj, being_printed[i])) |
| 1205 | { |
| 1206 | sprintf (buf, "#%d", i); |
| 1207 | strout (buf, -1, -1, printcharfun, 0); |
| 1208 | return; |
| 1209 | } |
| 1210 | being_printed[print_depth] = obj; |
| 1211 | } |
| 1212 | else |
| 1213 | { |
| 1214 | /* With the print-circle feature. */ |
| 1215 | int i; |
| 1216 | for (i = 0; i < print_number_index; i++) |
| 1217 | if (PRINT_NUMBER_OBJECT (Vprint_number_table, i) == obj) |
| 1218 | { |
| 1219 | if (NILP (PRINT_NUMBER_STATUS (Vprint_number_table, i))) |
| 1220 | { |
| 1221 | /* Add a prefix #n= if OBJ has not yet been printed; |
| 1222 | that is, its status field is nil. */ |
| 1223 | sprintf (buf, "#%d=", i + 1); |
| 1224 | strout (buf, -1, -1, printcharfun, 0); |
| 1225 | /* OBJ is going to be printed. Set the status to t. */ |
| 1226 | PRINT_NUMBER_STATUS (Vprint_number_table, i) = Qt; |
| 1227 | break; |
| 1228 | } |
| 1229 | else |
| 1230 | { |
| 1231 | /* Just print #n# if OBJ has already been printed. */ |
| 1232 | sprintf (buf, "#%d#", i + 1); |
| 1233 | strout (buf, -1, -1, printcharfun, 0); |
| 1234 | return; |
| 1235 | } |
| 1236 | } |
| 1237 | } |
| 1238 | } |
| 1239 | |
| 1240 | print_depth++; |
| 1241 | |
| 1242 | if (print_depth > PRINT_CIRCLE) |
| 1243 | error ("Apparently circular structure being printed"); |
| 1244 | #ifdef MAX_PRINT_CHARS |
| 1245 | if (max_print && print_chars > max_print) |
| 1246 | { |
| 1247 | PRINTCHAR ('\n'); |
| 1248 | print_chars = 0; |
| 1249 | } |
| 1250 | #endif /* MAX_PRINT_CHARS */ |
| 1251 | |
| 1252 | switch (XGCTYPE (obj)) |
| 1253 | { |
| 1254 | case Lisp_Int: |
| 1255 | if (sizeof (int) == sizeof (EMACS_INT)) |
| 1256 | sprintf (buf, "%d", XINT (obj)); |
| 1257 | else if (sizeof (long) == sizeof (EMACS_INT)) |
| 1258 | sprintf (buf, "%ld", (long) XINT (obj)); |
| 1259 | else |
| 1260 | abort (); |
| 1261 | strout (buf, -1, -1, printcharfun, 0); |
| 1262 | break; |
| 1263 | |
| 1264 | #ifdef LISP_FLOAT_TYPE |
| 1265 | case Lisp_Float: |
| 1266 | { |
| 1267 | char pigbuf[350]; /* see comments in float_to_string */ |
| 1268 | |
| 1269 | float_to_string (pigbuf, XFLOAT_DATA (obj)); |
| 1270 | strout (pigbuf, -1, -1, printcharfun, 0); |
| 1271 | } |
| 1272 | break; |
| 1273 | #endif |
| 1274 | |
| 1275 | case Lisp_String: |
| 1276 | if (!escapeflag) |
| 1277 | print_string (obj, printcharfun); |
| 1278 | else |
| 1279 | { |
| 1280 | register int i, i_byte; |
| 1281 | struct gcpro gcpro1; |
| 1282 | unsigned char *str; |
| 1283 | int size_byte; |
| 1284 | /* 1 means we must ensure that the next character we output |
| 1285 | cannot be taken as part of a hex character escape. */ |
| 1286 | int need_nonhex = 0; |
| 1287 | |
| 1288 | GCPRO1 (obj); |
| 1289 | |
| 1290 | #ifdef USE_TEXT_PROPERTIES |
| 1291 | if (!NULL_INTERVAL_P (XSTRING (obj)->intervals)) |
| 1292 | { |
| 1293 | PRINTCHAR ('#'); |
| 1294 | PRINTCHAR ('('); |
| 1295 | } |
| 1296 | #endif |
| 1297 | |
| 1298 | PRINTCHAR ('\"'); |
| 1299 | str = XSTRING (obj)->data; |
| 1300 | size_byte = STRING_BYTES (XSTRING (obj)); |
| 1301 | |
| 1302 | for (i = 0, i_byte = 0; i_byte < size_byte;) |
| 1303 | { |
| 1304 | /* Here, we must convert each multi-byte form to the |
| 1305 | corresponding character code before handing it to PRINTCHAR. */ |
| 1306 | int len; |
| 1307 | int c; |
| 1308 | |
| 1309 | if (STRING_MULTIBYTE (obj)) |
| 1310 | { |
| 1311 | c = STRING_CHAR_AND_LENGTH (str + i_byte, |
| 1312 | size_byte - i_byte, len); |
| 1313 | if (CHAR_VALID_P (c, 0)) |
| 1314 | i_byte += len; |
| 1315 | else |
| 1316 | c = str[i_byte++]; |
| 1317 | } |
| 1318 | else |
| 1319 | c = str[i_byte++]; |
| 1320 | |
| 1321 | QUIT; |
| 1322 | |
| 1323 | if (c == '\n' && print_escape_newlines) |
| 1324 | { |
| 1325 | PRINTCHAR ('\\'); |
| 1326 | PRINTCHAR ('n'); |
| 1327 | } |
| 1328 | else if (c == '\f' && print_escape_newlines) |
| 1329 | { |
| 1330 | PRINTCHAR ('\\'); |
| 1331 | PRINTCHAR ('f'); |
| 1332 | } |
| 1333 | else if (! SINGLE_BYTE_CHAR_P (c) && print_escape_multibyte) |
| 1334 | { |
| 1335 | /* When multibyte is disabled, |
| 1336 | print multibyte string chars using hex escapes. */ |
| 1337 | unsigned char outbuf[50]; |
| 1338 | sprintf (outbuf, "\\x%x", c); |
| 1339 | strout (outbuf, -1, -1, printcharfun, 0); |
| 1340 | need_nonhex = 1; |
| 1341 | } |
| 1342 | else if (SINGLE_BYTE_CHAR_P (c) && ! ASCII_BYTE_P (c) |
| 1343 | && print_escape_nonascii) |
| 1344 | { |
| 1345 | /* When printing in a multibyte buffer |
| 1346 | or when explicitly requested, |
| 1347 | print single-byte non-ASCII string chars |
| 1348 | using octal escapes. */ |
| 1349 | unsigned char outbuf[5]; |
| 1350 | sprintf (outbuf, "\\%03o", c); |
| 1351 | strout (outbuf, -1, -1, printcharfun, 0); |
| 1352 | } |
| 1353 | else |
| 1354 | { |
| 1355 | /* If we just had a hex escape, and this character |
| 1356 | could be taken as part of it, |
| 1357 | output `\ ' to prevent that. */ |
| 1358 | if (need_nonhex) |
| 1359 | { |
| 1360 | need_nonhex = 0; |
| 1361 | if ((c >= 'a' && c <= 'f') |
| 1362 | || (c >= 'A' && c <= 'F') |
| 1363 | || (c >= '0' && c <= '9')) |
| 1364 | strout ("\\ ", -1, -1, printcharfun, 0); |
| 1365 | } |
| 1366 | |
| 1367 | if (c == '\"' || c == '\\') |
| 1368 | PRINTCHAR ('\\'); |
| 1369 | PRINTCHAR (c); |
| 1370 | } |
| 1371 | } |
| 1372 | PRINTCHAR ('\"'); |
| 1373 | |
| 1374 | #ifdef USE_TEXT_PROPERTIES |
| 1375 | if (!NULL_INTERVAL_P (XSTRING (obj)->intervals)) |
| 1376 | { |
| 1377 | traverse_intervals (XSTRING (obj)->intervals, |
| 1378 | 0, 0, print_interval, printcharfun); |
| 1379 | PRINTCHAR (')'); |
| 1380 | } |
| 1381 | #endif |
| 1382 | |
| 1383 | UNGCPRO; |
| 1384 | } |
| 1385 | break; |
| 1386 | |
| 1387 | case Lisp_Symbol: |
| 1388 | { |
| 1389 | register int confusing; |
| 1390 | register unsigned char *p = XSYMBOL (obj)->name->data; |
| 1391 | register unsigned char *end = p + STRING_BYTES (XSYMBOL (obj)->name); |
| 1392 | register int c; |
| 1393 | int i, i_byte, size_byte; |
| 1394 | Lisp_Object name; |
| 1395 | |
| 1396 | XSETSTRING (name, XSYMBOL (obj)->name); |
| 1397 | |
| 1398 | if (p != end && (*p == '-' || *p == '+')) p++; |
| 1399 | if (p == end) |
| 1400 | confusing = 0; |
| 1401 | /* If symbol name begins with a digit, and ends with a digit, |
| 1402 | and contains nothing but digits and `e', it could be treated |
| 1403 | as a number. So set CONFUSING. |
| 1404 | |
| 1405 | Symbols that contain periods could also be taken as numbers, |
| 1406 | but periods are always escaped, so we don't have to worry |
| 1407 | about them here. */ |
| 1408 | else if (*p >= '0' && *p <= '9' |
| 1409 | && end[-1] >= '0' && end[-1] <= '9') |
| 1410 | { |
| 1411 | while (p != end && ((*p >= '0' && *p <= '9') |
| 1412 | /* Needed for \2e10. */ |
| 1413 | || *p == 'e')) |
| 1414 | p++; |
| 1415 | confusing = (end == p); |
| 1416 | } |
| 1417 | else |
| 1418 | confusing = 0; |
| 1419 | |
| 1420 | if (! NILP (Vprint_gensym) && NILP (XSYMBOL (obj)->obarray)) |
| 1421 | { |
| 1422 | PRINTCHAR ('#'); |
| 1423 | PRINTCHAR (':'); |
| 1424 | } |
| 1425 | |
| 1426 | size_byte = STRING_BYTES (XSTRING (name)); |
| 1427 | |
| 1428 | for (i = 0, i_byte = 0; i_byte < size_byte;) |
| 1429 | { |
| 1430 | /* Here, we must convert each multi-byte form to the |
| 1431 | corresponding character code before handing it to PRINTCHAR. */ |
| 1432 | |
| 1433 | if (STRING_MULTIBYTE (name)) |
| 1434 | FETCH_STRING_CHAR_ADVANCE (c, name, i, i_byte); |
| 1435 | else |
| 1436 | c = XSTRING (name)->data[i_byte++]; |
| 1437 | |
| 1438 | QUIT; |
| 1439 | |
| 1440 | if (escapeflag) |
| 1441 | { |
| 1442 | if (c == '\"' || c == '\\' || c == '\'' |
| 1443 | || c == ';' || c == '#' || c == '(' || c == ')' |
| 1444 | || c == ',' || c =='.' || c == '`' |
| 1445 | || c == '[' || c == ']' || c == '?' || c <= 040 |
| 1446 | || confusing) |
| 1447 | PRINTCHAR ('\\'), confusing = 0; |
| 1448 | } |
| 1449 | PRINTCHAR (c); |
| 1450 | } |
| 1451 | } |
| 1452 | break; |
| 1453 | |
| 1454 | case Lisp_Cons: |
| 1455 | /* If deeper than spec'd depth, print placeholder. */ |
| 1456 | if (INTEGERP (Vprint_level) |
| 1457 | && print_depth > XINT (Vprint_level)) |
| 1458 | strout ("...", -1, -1, printcharfun, 0); |
| 1459 | else if (print_quoted && CONSP (XCDR (obj)) && NILP (XCDR (XCDR (obj))) |
| 1460 | && (EQ (XCAR (obj), Qquote))) |
| 1461 | { |
| 1462 | PRINTCHAR ('\''); |
| 1463 | print_object (XCAR (XCDR (obj)), printcharfun, escapeflag); |
| 1464 | } |
| 1465 | else if (print_quoted && CONSP (XCDR (obj)) && NILP (XCDR (XCDR (obj))) |
| 1466 | && (EQ (XCAR (obj), Qfunction))) |
| 1467 | { |
| 1468 | PRINTCHAR ('#'); |
| 1469 | PRINTCHAR ('\''); |
| 1470 | print_object (XCAR (XCDR (obj)), printcharfun, escapeflag); |
| 1471 | } |
| 1472 | else if (print_quoted && CONSP (XCDR (obj)) && NILP (XCDR (XCDR (obj))) |
| 1473 | && ((EQ (XCAR (obj), Qbackquote) |
| 1474 | || EQ (XCAR (obj), Qcomma) |
| 1475 | || EQ (XCAR (obj), Qcomma_at) |
| 1476 | || EQ (XCAR (obj), Qcomma_dot)))) |
| 1477 | { |
| 1478 | print_object (XCAR (obj), printcharfun, 0); |
| 1479 | print_object (XCAR (XCDR (obj)), printcharfun, escapeflag); |
| 1480 | } |
| 1481 | else |
| 1482 | { |
| 1483 | PRINTCHAR ('('); |
| 1484 | { |
| 1485 | register int i = 0; |
| 1486 | register int print_length = 0; |
| 1487 | Lisp_Object halftail = obj; |
| 1488 | |
| 1489 | if (INTEGERP (Vprint_length)) |
| 1490 | print_length = XINT (Vprint_length); |
| 1491 | while (CONSP (obj)) |
| 1492 | { |
| 1493 | /* Detect circular list. */ |
| 1494 | if (NILP (Vprint_circle)) |
| 1495 | { |
| 1496 | /* Simple but imcomplete way. */ |
| 1497 | if (i != 0 && EQ (obj, halftail)) |
| 1498 | { |
| 1499 | sprintf (buf, " . #%d", i / 2); |
| 1500 | strout (buf, -1, -1, printcharfun, 0); |
| 1501 | goto end_of_list; |
| 1502 | } |
| 1503 | } |
| 1504 | else |
| 1505 | { |
| 1506 | /* With the print-circle feature. */ |
| 1507 | if (i != 0) |
| 1508 | { |
| 1509 | int i; |
| 1510 | for (i = 0; i < print_number_index; i++) |
| 1511 | if (PRINT_NUMBER_OBJECT (Vprint_number_table, i) == obj) |
| 1512 | { |
| 1513 | if (NILP (PRINT_NUMBER_STATUS (Vprint_number_table, i))) |
| 1514 | { |
| 1515 | strout (" . ", 3, 3, printcharfun, 0); |
| 1516 | print_object (obj, printcharfun, escapeflag); |
| 1517 | } |
| 1518 | else |
| 1519 | { |
| 1520 | sprintf (buf, " . #%d#", i + 1); |
| 1521 | strout (buf, -1, -1, printcharfun, 0); |
| 1522 | } |
| 1523 | goto end_of_list; |
| 1524 | } |
| 1525 | } |
| 1526 | } |
| 1527 | if (i++) |
| 1528 | PRINTCHAR (' '); |
| 1529 | if (print_length && i > print_length) |
| 1530 | { |
| 1531 | strout ("...", 3, 3, printcharfun, 0); |
| 1532 | goto end_of_list; |
| 1533 | } |
| 1534 | print_object (XCAR (obj), printcharfun, escapeflag); |
| 1535 | obj = XCDR (obj); |
| 1536 | if (!(i & 1)) |
| 1537 | halftail = XCDR (halftail); |
| 1538 | } |
| 1539 | } |
| 1540 | if (!NILP (obj)) |
| 1541 | { |
| 1542 | strout (" . ", 3, 3, printcharfun, 0); |
| 1543 | print_object (obj, printcharfun, escapeflag); |
| 1544 | } |
| 1545 | end_of_list: |
| 1546 | PRINTCHAR (')'); |
| 1547 | } |
| 1548 | break; |
| 1549 | |
| 1550 | case Lisp_Vectorlike: |
| 1551 | if (PROCESSP (obj)) |
| 1552 | { |
| 1553 | if (escapeflag) |
| 1554 | { |
| 1555 | strout ("#<process ", -1, -1, printcharfun, 0); |
| 1556 | print_string (XPROCESS (obj)->name, printcharfun); |
| 1557 | PRINTCHAR ('>'); |
| 1558 | } |
| 1559 | else |
| 1560 | print_string (XPROCESS (obj)->name, printcharfun); |
| 1561 | } |
| 1562 | else if (BOOL_VECTOR_P (obj)) |
| 1563 | { |
| 1564 | register int i; |
| 1565 | register unsigned char c; |
| 1566 | struct gcpro gcpro1; |
| 1567 | int size_in_chars |
| 1568 | = (XBOOL_VECTOR (obj)->size + BITS_PER_CHAR - 1) / BITS_PER_CHAR; |
| 1569 | |
| 1570 | GCPRO1 (obj); |
| 1571 | |
| 1572 | PRINTCHAR ('#'); |
| 1573 | PRINTCHAR ('&'); |
| 1574 | sprintf (buf, "%d", XBOOL_VECTOR (obj)->size); |
| 1575 | strout (buf, -1, -1, printcharfun, 0); |
| 1576 | PRINTCHAR ('\"'); |
| 1577 | |
| 1578 | /* Don't print more characters than the specified maximum. */ |
| 1579 | if (INTEGERP (Vprint_length) |
| 1580 | && XINT (Vprint_length) < size_in_chars) |
| 1581 | size_in_chars = XINT (Vprint_length); |
| 1582 | |
| 1583 | for (i = 0; i < size_in_chars; i++) |
| 1584 | { |
| 1585 | QUIT; |
| 1586 | c = XBOOL_VECTOR (obj)->data[i]; |
| 1587 | if (c == '\n' && print_escape_newlines) |
| 1588 | { |
| 1589 | PRINTCHAR ('\\'); |
| 1590 | PRINTCHAR ('n'); |
| 1591 | } |
| 1592 | else if (c == '\f' && print_escape_newlines) |
| 1593 | { |
| 1594 | PRINTCHAR ('\\'); |
| 1595 | PRINTCHAR ('f'); |
| 1596 | } |
| 1597 | else |
| 1598 | { |
| 1599 | if (c == '\"' || c == '\\') |
| 1600 | PRINTCHAR ('\\'); |
| 1601 | PRINTCHAR (c); |
| 1602 | } |
| 1603 | } |
| 1604 | PRINTCHAR ('\"'); |
| 1605 | |
| 1606 | UNGCPRO; |
| 1607 | } |
| 1608 | else if (SUBRP (obj)) |
| 1609 | { |
| 1610 | strout ("#<subr ", -1, -1, printcharfun, 0); |
| 1611 | strout (XSUBR (obj)->symbol_name, -1, -1, printcharfun, 0); |
| 1612 | PRINTCHAR ('>'); |
| 1613 | } |
| 1614 | else if (WINDOWP (obj)) |
| 1615 | { |
| 1616 | strout ("#<window ", -1, -1, printcharfun, 0); |
| 1617 | sprintf (buf, "%d", XFASTINT (XWINDOW (obj)->sequence_number)); |
| 1618 | strout (buf, -1, -1, printcharfun, 0); |
| 1619 | if (!NILP (XWINDOW (obj)->buffer)) |
| 1620 | { |
| 1621 | strout (" on ", -1, -1, printcharfun, 0); |
| 1622 | print_string (XBUFFER (XWINDOW (obj)->buffer)->name, printcharfun); |
| 1623 | } |
| 1624 | PRINTCHAR ('>'); |
| 1625 | } |
| 1626 | else if (HASH_TABLE_P (obj)) |
| 1627 | { |
| 1628 | struct Lisp_Hash_Table *h = XHASH_TABLE (obj); |
| 1629 | strout ("#<hash-table", -1, -1, printcharfun, 0); |
| 1630 | if (SYMBOLP (h->test)) |
| 1631 | { |
| 1632 | PRINTCHAR (' '); |
| 1633 | PRINTCHAR ('\''); |
| 1634 | strout (XSYMBOL (h->test)->name->data, -1, -1, printcharfun, 0); |
| 1635 | PRINTCHAR (' '); |
| 1636 | strout (XSYMBOL (h->weak)->name->data, -1, -1, printcharfun, 0); |
| 1637 | PRINTCHAR (' '); |
| 1638 | sprintf (buf, "%d/%d", XFASTINT (h->count), |
| 1639 | XVECTOR (h->next)->size); |
| 1640 | strout (buf, -1, -1, printcharfun, 0); |
| 1641 | } |
| 1642 | sprintf (buf, " 0x%lx", (unsigned long) h); |
| 1643 | strout (buf, -1, -1, printcharfun, 0); |
| 1644 | PRINTCHAR ('>'); |
| 1645 | } |
| 1646 | else if (BUFFERP (obj)) |
| 1647 | { |
| 1648 | if (NILP (XBUFFER (obj)->name)) |
| 1649 | strout ("#<killed buffer>", -1, -1, printcharfun, 0); |
| 1650 | else if (escapeflag) |
| 1651 | { |
| 1652 | strout ("#<buffer ", -1, -1, printcharfun, 0); |
| 1653 | print_string (XBUFFER (obj)->name, printcharfun); |
| 1654 | PRINTCHAR ('>'); |
| 1655 | } |
| 1656 | else |
| 1657 | print_string (XBUFFER (obj)->name, printcharfun); |
| 1658 | } |
| 1659 | else if (WINDOW_CONFIGURATIONP (obj)) |
| 1660 | { |
| 1661 | strout ("#<window-configuration>", -1, -1, printcharfun, 0); |
| 1662 | } |
| 1663 | else if (FRAMEP (obj)) |
| 1664 | { |
| 1665 | strout ((FRAME_LIVE_P (XFRAME (obj)) |
| 1666 | ? "#<frame " : "#<dead frame "), |
| 1667 | -1, -1, printcharfun, 0); |
| 1668 | print_string (XFRAME (obj)->name, printcharfun); |
| 1669 | sprintf (buf, " 0x%lx\\ ", (unsigned long) (XFRAME (obj))); |
| 1670 | strout (buf, -1, -1, printcharfun, 0); |
| 1671 | PRINTCHAR ('>'); |
| 1672 | } |
| 1673 | else |
| 1674 | { |
| 1675 | int size = XVECTOR (obj)->size; |
| 1676 | if (COMPILEDP (obj)) |
| 1677 | { |
| 1678 | PRINTCHAR ('#'); |
| 1679 | size &= PSEUDOVECTOR_SIZE_MASK; |
| 1680 | } |
| 1681 | if (CHAR_TABLE_P (obj)) |
| 1682 | { |
| 1683 | /* We print a char-table as if it were a vector, |
| 1684 | lumping the parent and default slots in with the |
| 1685 | character slots. But we add #^ as a prefix. */ |
| 1686 | PRINTCHAR ('#'); |
| 1687 | PRINTCHAR ('^'); |
| 1688 | if (SUB_CHAR_TABLE_P (obj)) |
| 1689 | PRINTCHAR ('^'); |
| 1690 | size &= PSEUDOVECTOR_SIZE_MASK; |
| 1691 | } |
| 1692 | if (size & PSEUDOVECTOR_FLAG) |
| 1693 | goto badtype; |
| 1694 | |
| 1695 | PRINTCHAR ('['); |
| 1696 | { |
| 1697 | register int i; |
| 1698 | register Lisp_Object tem; |
| 1699 | |
| 1700 | /* Don't print more elements than the specified maximum. */ |
| 1701 | if (INTEGERP (Vprint_length) |
| 1702 | && XINT (Vprint_length) < size) |
| 1703 | size = XINT (Vprint_length); |
| 1704 | |
| 1705 | for (i = 0; i < size; i++) |
| 1706 | { |
| 1707 | if (i) PRINTCHAR (' '); |
| 1708 | tem = XVECTOR (obj)->contents[i]; |
| 1709 | print_object (tem, printcharfun, escapeflag); |
| 1710 | } |
| 1711 | } |
| 1712 | PRINTCHAR (']'); |
| 1713 | } |
| 1714 | break; |
| 1715 | |
| 1716 | case Lisp_Misc: |
| 1717 | switch (XMISCTYPE (obj)) |
| 1718 | { |
| 1719 | case Lisp_Misc_Marker: |
| 1720 | strout ("#<marker ", -1, -1, printcharfun, 0); |
| 1721 | /* Do you think this is necessary? */ |
| 1722 | if (XMARKER (obj)->insertion_type != 0) |
| 1723 | strout ("(before-insertion) ", -1, -1, printcharfun, 0); |
| 1724 | if (!(XMARKER (obj)->buffer)) |
| 1725 | strout ("in no buffer", -1, -1, printcharfun, 0); |
| 1726 | else |
| 1727 | { |
| 1728 | sprintf (buf, "at %d", marker_position (obj)); |
| 1729 | strout (buf, -1, -1, printcharfun, 0); |
| 1730 | strout (" in ", -1, -1, printcharfun, 0); |
| 1731 | print_string (XMARKER (obj)->buffer->name, printcharfun); |
| 1732 | } |
| 1733 | PRINTCHAR ('>'); |
| 1734 | break; |
| 1735 | |
| 1736 | case Lisp_Misc_Overlay: |
| 1737 | strout ("#<overlay ", -1, -1, printcharfun, 0); |
| 1738 | if (!(XMARKER (OVERLAY_START (obj))->buffer)) |
| 1739 | strout ("in no buffer", -1, -1, printcharfun, 0); |
| 1740 | else |
| 1741 | { |
| 1742 | sprintf (buf, "from %d to %d in ", |
| 1743 | marker_position (OVERLAY_START (obj)), |
| 1744 | marker_position (OVERLAY_END (obj))); |
| 1745 | strout (buf, -1, -1, printcharfun, 0); |
| 1746 | print_string (XMARKER (OVERLAY_START (obj))->buffer->name, |
| 1747 | printcharfun); |
| 1748 | } |
| 1749 | PRINTCHAR ('>'); |
| 1750 | break; |
| 1751 | |
| 1752 | /* Remaining cases shouldn't happen in normal usage, but let's print |
| 1753 | them anyway for the benefit of the debugger. */ |
| 1754 | case Lisp_Misc_Free: |
| 1755 | strout ("#<misc free cell>", -1, -1, printcharfun, 0); |
| 1756 | break; |
| 1757 | |
| 1758 | case Lisp_Misc_Intfwd: |
| 1759 | sprintf (buf, "#<intfwd to %d>", *XINTFWD (obj)->intvar); |
| 1760 | strout (buf, -1, -1, printcharfun, 0); |
| 1761 | break; |
| 1762 | |
| 1763 | case Lisp_Misc_Boolfwd: |
| 1764 | sprintf (buf, "#<boolfwd to %s>", |
| 1765 | (*XBOOLFWD (obj)->boolvar ? "t" : "nil")); |
| 1766 | strout (buf, -1, -1, printcharfun, 0); |
| 1767 | break; |
| 1768 | |
| 1769 | case Lisp_Misc_Objfwd: |
| 1770 | strout ("#<objfwd to ", -1, -1, printcharfun, 0); |
| 1771 | print_object (*XOBJFWD (obj)->objvar, printcharfun, escapeflag); |
| 1772 | PRINTCHAR ('>'); |
| 1773 | break; |
| 1774 | |
| 1775 | case Lisp_Misc_Buffer_Objfwd: |
| 1776 | strout ("#<buffer_objfwd to ", -1, -1, printcharfun, 0); |
| 1777 | print_object (*(Lisp_Object *)((char *)current_buffer |
| 1778 | + XBUFFER_OBJFWD (obj)->offset), |
| 1779 | printcharfun, escapeflag); |
| 1780 | PRINTCHAR ('>'); |
| 1781 | break; |
| 1782 | |
| 1783 | case Lisp_Misc_Kboard_Objfwd: |
| 1784 | strout ("#<kboard_objfwd to ", -1, -1, printcharfun, 0); |
| 1785 | print_object (*(Lisp_Object *)((char *) current_kboard |
| 1786 | + XKBOARD_OBJFWD (obj)->offset), |
| 1787 | printcharfun, escapeflag); |
| 1788 | PRINTCHAR ('>'); |
| 1789 | break; |
| 1790 | |
| 1791 | case Lisp_Misc_Buffer_Local_Value: |
| 1792 | strout ("#<buffer_local_value ", -1, -1, printcharfun, 0); |
| 1793 | goto do_buffer_local; |
| 1794 | case Lisp_Misc_Some_Buffer_Local_Value: |
| 1795 | strout ("#<some_buffer_local_value ", -1, -1, printcharfun, 0); |
| 1796 | do_buffer_local: |
| 1797 | strout ("[realvalue] ", -1, -1, printcharfun, 0); |
| 1798 | print_object (XBUFFER_LOCAL_VALUE (obj)->realvalue, |
| 1799 | printcharfun, escapeflag); |
| 1800 | if (XBUFFER_LOCAL_VALUE (obj)->found_for_buffer) |
| 1801 | strout ("[local in buffer] ", -1, -1, printcharfun, 0); |
| 1802 | else |
| 1803 | strout ("[buffer] ", -1, -1, printcharfun, 0); |
| 1804 | print_object (XBUFFER_LOCAL_VALUE (obj)->buffer, |
| 1805 | printcharfun, escapeflag); |
| 1806 | if (XBUFFER_LOCAL_VALUE (obj)->check_frame) |
| 1807 | { |
| 1808 | if (XBUFFER_LOCAL_VALUE (obj)->found_for_frame) |
| 1809 | strout ("[local in frame] ", -1, -1, printcharfun, 0); |
| 1810 | else |
| 1811 | strout ("[frame] ", -1, -1, printcharfun, 0); |
| 1812 | print_object (XBUFFER_LOCAL_VALUE (obj)->frame, |
| 1813 | printcharfun, escapeflag); |
| 1814 | } |
| 1815 | strout ("[alist-elt] ", -1, -1, printcharfun, 0); |
| 1816 | print_object (XCAR (XBUFFER_LOCAL_VALUE (obj)->cdr), |
| 1817 | printcharfun, escapeflag); |
| 1818 | strout ("[default-value] ", -1, -1, printcharfun, 0); |
| 1819 | print_object (XCDR (XBUFFER_LOCAL_VALUE (obj)->cdr), |
| 1820 | printcharfun, escapeflag); |
| 1821 | PRINTCHAR ('>'); |
| 1822 | break; |
| 1823 | |
| 1824 | default: |
| 1825 | goto badtype; |
| 1826 | } |
| 1827 | break; |
| 1828 | |
| 1829 | default: |
| 1830 | badtype: |
| 1831 | { |
| 1832 | /* We're in trouble if this happens! |
| 1833 | Probably should just abort () */ |
| 1834 | strout ("#<EMACS BUG: INVALID DATATYPE ", -1, -1, printcharfun, 0); |
| 1835 | if (MISCP (obj)) |
| 1836 | sprintf (buf, "(MISC 0x%04x)", (int) XMISCTYPE (obj)); |
| 1837 | else if (VECTORLIKEP (obj)) |
| 1838 | sprintf (buf, "(PVEC 0x%08x)", (int) XVECTOR (obj)->size); |
| 1839 | else |
| 1840 | sprintf (buf, "(0x%02x)", (int) XTYPE (obj)); |
| 1841 | strout (buf, -1, -1, printcharfun, 0); |
| 1842 | strout (" Save your buffers immediately and please report this bug>", |
| 1843 | -1, -1, printcharfun, 0); |
| 1844 | } |
| 1845 | } |
| 1846 | |
| 1847 | print_depth--; |
| 1848 | } |
| 1849 | \f |
| 1850 | #ifdef USE_TEXT_PROPERTIES |
| 1851 | |
| 1852 | /* Print a description of INTERVAL using PRINTCHARFUN. |
| 1853 | This is part of printing a string that has text properties. */ |
| 1854 | |
| 1855 | void |
| 1856 | print_interval (interval, printcharfun) |
| 1857 | INTERVAL interval; |
| 1858 | Lisp_Object printcharfun; |
| 1859 | { |
| 1860 | PRINTCHAR (' '); |
| 1861 | print_object (make_number (interval->position), printcharfun, 1); |
| 1862 | PRINTCHAR (' '); |
| 1863 | print_object (make_number (interval->position + LENGTH (interval)), |
| 1864 | printcharfun, 1); |
| 1865 | PRINTCHAR (' '); |
| 1866 | print_object (interval->plist, printcharfun, 1); |
| 1867 | } |
| 1868 | |
| 1869 | #endif /* USE_TEXT_PROPERTIES */ |
| 1870 | \f |
| 1871 | void |
| 1872 | syms_of_print () |
| 1873 | { |
| 1874 | Qtemp_buffer_setup_hook = intern ("temp-buffer-setup-hook"); |
| 1875 | staticpro (&Qtemp_buffer_setup_hook); |
| 1876 | |
| 1877 | DEFVAR_LISP ("standard-output", &Vstandard_output, |
| 1878 | "Output stream `print' uses by default for outputting a character.\n\ |
| 1879 | This may be any function of one argument.\n\ |
| 1880 | It may also be a buffer (output is inserted before point)\n\ |
| 1881 | or a marker (output is inserted and the marker is advanced)\n\ |
| 1882 | or the symbol t (output appears in the echo area)."); |
| 1883 | Vstandard_output = Qt; |
| 1884 | Qstandard_output = intern ("standard-output"); |
| 1885 | staticpro (&Qstandard_output); |
| 1886 | |
| 1887 | #ifdef LISP_FLOAT_TYPE |
| 1888 | DEFVAR_LISP ("float-output-format", &Vfloat_output_format, |
| 1889 | "The format descriptor string used to print floats.\n\ |
| 1890 | This is a %-spec like those accepted by `printf' in C,\n\ |
| 1891 | but with some restrictions. It must start with the two characters `%.'.\n\ |
| 1892 | After that comes an integer precision specification,\n\ |
| 1893 | and then a letter which controls the format.\n\ |
| 1894 | The letters allowed are `e', `f' and `g'.\n\ |
| 1895 | Use `e' for exponential notation \"DIG.DIGITSeEXPT\"\n\ |
| 1896 | Use `f' for decimal point notation \"DIGITS.DIGITS\".\n\ |
| 1897 | Use `g' to choose the shorter of those two formats for the number at hand.\n\ |
| 1898 | The precision in any of these cases is the number of digits following\n\ |
| 1899 | the decimal point. With `f', a precision of 0 means to omit the\n\ |
| 1900 | decimal point. 0 is not allowed with `e' or `g'.\n\n\ |
| 1901 | A value of nil means to use the shortest notation\n\ |
| 1902 | that represents the number without losing information."); |
| 1903 | Vfloat_output_format = Qnil; |
| 1904 | Qfloat_output_format = intern ("float-output-format"); |
| 1905 | staticpro (&Qfloat_output_format); |
| 1906 | #endif /* LISP_FLOAT_TYPE */ |
| 1907 | |
| 1908 | DEFVAR_LISP ("print-length", &Vprint_length, |
| 1909 | "Maximum length of list to print before abbreviating.\n\ |
| 1910 | A value of nil means no limit."); |
| 1911 | Vprint_length = Qnil; |
| 1912 | |
| 1913 | DEFVAR_LISP ("print-level", &Vprint_level, |
| 1914 | "Maximum depth of list nesting to print before abbreviating.\n\ |
| 1915 | A value of nil means no limit."); |
| 1916 | Vprint_level = Qnil; |
| 1917 | |
| 1918 | DEFVAR_BOOL ("print-escape-newlines", &print_escape_newlines, |
| 1919 | "Non-nil means print newlines in strings as backslash-n.\n\ |
| 1920 | Also print formfeeds as backslash-f."); |
| 1921 | print_escape_newlines = 0; |
| 1922 | |
| 1923 | DEFVAR_BOOL ("print-escape-nonascii", &print_escape_nonascii, |
| 1924 | "Non-nil means print unibyte non-ASCII chars in strings as \\OOO.\n\ |
| 1925 | \(OOO is the octal representation of the character code.)\n\ |
| 1926 | Only single-byte characters are affected, and only in `prin1'."); |
| 1927 | print_escape_nonascii = 0; |
| 1928 | |
| 1929 | DEFVAR_BOOL ("print-escape-multibyte", &print_escape_multibyte, |
| 1930 | "Non-nil means print multibyte characters in strings as \\xXXXX.\n\ |
| 1931 | \(XXX is the hex representation of the character code.)\n\ |
| 1932 | This affects only `prin1'."); |
| 1933 | print_escape_multibyte = 0; |
| 1934 | |
| 1935 | DEFVAR_BOOL ("print-quoted", &print_quoted, |
| 1936 | "Non-nil means print quoted forms with reader syntax.\n\ |
| 1937 | I.e., (quote foo) prints as 'foo, (function foo) as #'foo, and, backquoted\n\ |
| 1938 | forms print in the new syntax."); |
| 1939 | print_quoted = 0; |
| 1940 | |
| 1941 | DEFVAR_LISP ("print-gensym", &Vprint_gensym, |
| 1942 | "Non-nil means print uninterned symbols so they will read as uninterned.\n\ |
| 1943 | I.e., the value of (make-symbol \"foobar\") prints as #:foobar.\n\ |
| 1944 | When the uninterned symbol appears within a recursive data structure\n\ |
| 1945 | and the symbol appears more than once, in addition use the #N# and #N=\n\ |
| 1946 | constructs as needed, so that multiple references to the same symbol are\n\ |
| 1947 | shared once again when the text is read back."); |
| 1948 | Vprint_gensym = Qnil; |
| 1949 | |
| 1950 | DEFVAR_LISP ("print-circle", &Vprint_circle, |
| 1951 | "*Non-nil means print recursive structures using #N= and #N# syntax.\n\ |
| 1952 | If nil, printing proceeds recursively and may lead to\n\ |
| 1953 | `max-lisp-eval-depth' being exceeded or an error may occur:\n\ |
| 1954 | \"Apparently circular structure being printed.\" Also see\n\ |
| 1955 | `print-length' and `print-level'.\n\ |
| 1956 | If non-nil, shared substructures anywhere in the structure are printed\n\ |
| 1957 | with `#N=' before the first occurrence (in the order of the print\n\ |
| 1958 | representation) and `#N#' in place of each subsequent occurrence,\n\ |
| 1959 | where N is a positive decimal integer."); |
| 1960 | Vprint_circle = Qnil; |
| 1961 | |
| 1962 | DEFVAR_LISP ("print-continuous-numbering", &Vprint_continuous_numbering, |
| 1963 | "*Non-nil means keep numbering between several print functions.\n\ |
| 1964 | See `print-gensym' nad `print-circle'. See also `print-number-table'."); |
| 1965 | Vprint_continuous_numbering = Qnil; |
| 1966 | |
| 1967 | DEFVAR_LISP ("print-number-table", &Vprint_number_table, |
| 1968 | "A vector keeping the information of the current printed object.\n\ |
| 1969 | This variable shouldn't be modified in Lisp level, but should be binded\n\ |
| 1970 | with nil using let at the same position with `print-continuous-numbering',\n\ |
| 1971 | so that the value of this variable can be freed after printing."); |
| 1972 | Vprint_number_table = Qnil; |
| 1973 | |
| 1974 | /* prin1_to_string_buffer initialized in init_buffer_once in buffer.c */ |
| 1975 | staticpro (&Vprin1_to_string_buffer); |
| 1976 | |
| 1977 | defsubr (&Sprin1); |
| 1978 | defsubr (&Sprin1_to_string); |
| 1979 | defsubr (&Serror_message_string); |
| 1980 | defsubr (&Sprinc); |
| 1981 | defsubr (&Sprint); |
| 1982 | defsubr (&Sterpri); |
| 1983 | defsubr (&Swrite_char); |
| 1984 | defsubr (&Sexternal_debugging_output); |
| 1985 | |
| 1986 | Qexternal_debugging_output = intern ("external-debugging-output"); |
| 1987 | staticpro (&Qexternal_debugging_output); |
| 1988 | |
| 1989 | Qprint_escape_newlines = intern ("print-escape-newlines"); |
| 1990 | staticpro (&Qprint_escape_newlines); |
| 1991 | |
| 1992 | Qprint_escape_multibyte = intern ("print-escape-multibyte"); |
| 1993 | staticpro (&Qprint_escape_multibyte); |
| 1994 | |
| 1995 | Qprint_escape_nonascii = intern ("print-escape-nonascii"); |
| 1996 | staticpro (&Qprint_escape_nonascii); |
| 1997 | |
| 1998 | defsubr (&Swith_output_to_temp_buffer); |
| 1999 | } |