| 1 | /* Lisp object printing and output streams. |
| 2 | |
| 3 | Copyright (C) 1985-1986, 1988, 1993-1995, 1997-2011 |
| 4 | Free Software Foundation, Inc. |
| 5 | |
| 6 | This file is part of GNU Emacs. |
| 7 | |
| 8 | GNU Emacs is free software: you can redistribute it and/or modify |
| 9 | it under the terms of the GNU General Public License as published by |
| 10 | the Free Software Foundation, either version 3 of the License, or |
| 11 | (at your option) any later version. |
| 12 | |
| 13 | GNU Emacs is distributed in the hope that it will be useful, |
| 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | GNU General Public License for more details. |
| 17 | |
| 18 | You should have received a copy of the GNU General Public License |
| 19 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
| 20 | |
| 21 | |
| 22 | #include <config.h> |
| 23 | #include <stdio.h> |
| 24 | #include <setjmp.h> |
| 25 | #include "lisp.h" |
| 26 | #include "buffer.h" |
| 27 | #include "character.h" |
| 28 | #include "charset.h" |
| 29 | #include "keyboard.h" |
| 30 | #include "frame.h" |
| 31 | #include "window.h" |
| 32 | #include "process.h" |
| 33 | #include "dispextern.h" |
| 34 | #include "termchar.h" |
| 35 | #include "intervals.h" |
| 36 | #include "blockinput.h" |
| 37 | #include "termhooks.h" /* For struct terminal. */ |
| 38 | #include "font.h" |
| 39 | |
| 40 | Lisp_Object Qstandard_output; |
| 41 | |
| 42 | Lisp_Object Qtemp_buffer_setup_hook; |
| 43 | |
| 44 | /* These are used to print like we read. */ |
| 45 | |
| 46 | Lisp_Object Qfloat_output_format; |
| 47 | |
| 48 | #include <math.h> |
| 49 | |
| 50 | #if STDC_HEADERS |
| 51 | #include <float.h> |
| 52 | #endif |
| 53 | #include <ftoastr.h> |
| 54 | |
| 55 | /* Default to values appropriate for IEEE floating point. */ |
| 56 | #ifndef DBL_DIG |
| 57 | #define DBL_DIG 15 |
| 58 | #endif |
| 59 | |
| 60 | /* Avoid actual stack overflow in print. */ |
| 61 | int print_depth; |
| 62 | |
| 63 | /* Level of nesting inside outputting backquote in new style. */ |
| 64 | int new_backquote_output; |
| 65 | |
| 66 | /* Detect most circularities to print finite output. */ |
| 67 | #define PRINT_CIRCLE 200 |
| 68 | Lisp_Object being_printed[PRINT_CIRCLE]; |
| 69 | |
| 70 | /* When printing into a buffer, first we put the text in this |
| 71 | block, then insert it all at once. */ |
| 72 | char *print_buffer; |
| 73 | |
| 74 | /* Size allocated in print_buffer. */ |
| 75 | EMACS_INT print_buffer_size; |
| 76 | /* Chars stored in print_buffer. */ |
| 77 | EMACS_INT print_buffer_pos; |
| 78 | /* Bytes stored in print_buffer. */ |
| 79 | EMACS_INT print_buffer_pos_byte; |
| 80 | |
| 81 | Lisp_Object Qprint_escape_newlines; |
| 82 | Lisp_Object Qprint_escape_multibyte, Qprint_escape_nonascii; |
| 83 | |
| 84 | /* Vprint_number_table is a table, that keeps objects that are going to |
| 85 | be printed, to allow use of #n= and #n# to express sharing. |
| 86 | For any given object, the table can give the following values: |
| 87 | t the object will be printed only once. |
| 88 | -N the object will be printed several times and will take number N. |
| 89 | N the object has been printed so we can refer to it as #N#. |
| 90 | print_number_index holds the largest N already used. |
| 91 | N has to be striclty larger than 0 since we need to distinguish -N. */ |
| 92 | int print_number_index; |
| 93 | void print_interval (INTERVAL interval, Lisp_Object printcharfun); |
| 94 | |
| 95 | /* GDB resets this to zero on W32 to disable OutputDebugString calls. */ |
| 96 | int print_output_debug_flag EXTERNALLY_VISIBLE = 1; |
| 97 | |
| 98 | \f |
| 99 | /* Low level output routines for characters and strings */ |
| 100 | |
| 101 | /* Lisp functions to do output using a stream |
| 102 | must have the stream in a variable called printcharfun |
| 103 | and must start with PRINTPREPARE, end with PRINTFINISH, |
| 104 | and use PRINTDECLARE to declare common variables. |
| 105 | Use PRINTCHAR to output one character, |
| 106 | or call strout to output a block of characters. */ |
| 107 | |
| 108 | #define PRINTDECLARE \ |
| 109 | struct buffer *old = current_buffer; \ |
| 110 | EMACS_INT old_point = -1, start_point = -1; \ |
| 111 | EMACS_INT old_point_byte = -1, start_point_byte = -1; \ |
| 112 | int specpdl_count = SPECPDL_INDEX (); \ |
| 113 | int free_print_buffer = 0; \ |
| 114 | int multibyte = !NILP (B_ (current_buffer, enable_multibyte_characters)); \ |
| 115 | Lisp_Object original |
| 116 | |
| 117 | #define PRINTPREPARE \ |
| 118 | original = printcharfun; \ |
| 119 | if (NILP (printcharfun)) printcharfun = Qt; \ |
| 120 | if (BUFFERP (printcharfun)) \ |
| 121 | { \ |
| 122 | if (XBUFFER (printcharfun) != current_buffer) \ |
| 123 | Fset_buffer (printcharfun); \ |
| 124 | printcharfun = Qnil; \ |
| 125 | } \ |
| 126 | if (MARKERP (printcharfun)) \ |
| 127 | { \ |
| 128 | EMACS_INT marker_pos; \ |
| 129 | if (! XMARKER (printcharfun)->buffer) \ |
| 130 | error ("Marker does not point anywhere"); \ |
| 131 | if (XMARKER (printcharfun)->buffer != current_buffer) \ |
| 132 | set_buffer_internal (XMARKER (printcharfun)->buffer); \ |
| 133 | marker_pos = marker_position (printcharfun); \ |
| 134 | if (marker_pos < BEGV || marker_pos > ZV) \ |
| 135 | error ("Marker is outside the accessible part of the buffer"); \ |
| 136 | old_point = PT; \ |
| 137 | old_point_byte = PT_BYTE; \ |
| 138 | SET_PT_BOTH (marker_pos, \ |
| 139 | marker_byte_position (printcharfun)); \ |
| 140 | start_point = PT; \ |
| 141 | start_point_byte = PT_BYTE; \ |
| 142 | printcharfun = Qnil; \ |
| 143 | } \ |
| 144 | if (NILP (printcharfun)) \ |
| 145 | { \ |
| 146 | Lisp_Object string; \ |
| 147 | if (NILP (B_ (current_buffer, enable_multibyte_characters)) \ |
| 148 | && ! print_escape_multibyte) \ |
| 149 | specbind (Qprint_escape_multibyte, Qt); \ |
| 150 | if (! NILP (B_ (current_buffer, enable_multibyte_characters)) \ |
| 151 | && ! print_escape_nonascii) \ |
| 152 | specbind (Qprint_escape_nonascii, Qt); \ |
| 153 | if (print_buffer != 0) \ |
| 154 | { \ |
| 155 | string = make_string_from_bytes (print_buffer, \ |
| 156 | print_buffer_pos, \ |
| 157 | print_buffer_pos_byte); \ |
| 158 | record_unwind_protect (print_unwind, string); \ |
| 159 | } \ |
| 160 | else \ |
| 161 | { \ |
| 162 | print_buffer_size = 1000; \ |
| 163 | print_buffer = (char *) xmalloc (print_buffer_size); \ |
| 164 | free_print_buffer = 1; \ |
| 165 | } \ |
| 166 | print_buffer_pos = 0; \ |
| 167 | print_buffer_pos_byte = 0; \ |
| 168 | } \ |
| 169 | if (EQ (printcharfun, Qt) && ! noninteractive) \ |
| 170 | setup_echo_area_for_printing (multibyte); |
| 171 | |
| 172 | #define PRINTFINISH \ |
| 173 | if (NILP (printcharfun)) \ |
| 174 | { \ |
| 175 | if (print_buffer_pos != print_buffer_pos_byte \ |
| 176 | && NILP (B_ (current_buffer, enable_multibyte_characters))) \ |
| 177 | { \ |
| 178 | unsigned char *temp \ |
| 179 | = (unsigned char *) alloca (print_buffer_pos + 1); \ |
| 180 | copy_text ((unsigned char *) print_buffer, temp, \ |
| 181 | print_buffer_pos_byte, 1, 0); \ |
| 182 | insert_1_both ((char *) temp, print_buffer_pos, \ |
| 183 | print_buffer_pos, 0, 1, 0); \ |
| 184 | } \ |
| 185 | else \ |
| 186 | insert_1_both (print_buffer, print_buffer_pos, \ |
| 187 | print_buffer_pos_byte, 0, 1, 0); \ |
| 188 | signal_after_change (PT - print_buffer_pos, 0, print_buffer_pos);\ |
| 189 | } \ |
| 190 | if (free_print_buffer) \ |
| 191 | { \ |
| 192 | xfree (print_buffer); \ |
| 193 | print_buffer = 0; \ |
| 194 | } \ |
| 195 | unbind_to (specpdl_count, Qnil); \ |
| 196 | if (MARKERP (original)) \ |
| 197 | set_marker_both (original, Qnil, PT, PT_BYTE); \ |
| 198 | if (old_point >= 0) \ |
| 199 | SET_PT_BOTH (old_point + (old_point >= start_point \ |
| 200 | ? PT - start_point : 0), \ |
| 201 | old_point_byte + (old_point_byte >= start_point_byte \ |
| 202 | ? PT_BYTE - start_point_byte : 0)); \ |
| 203 | if (old != current_buffer) \ |
| 204 | set_buffer_internal (old); |
| 205 | |
| 206 | #define PRINTCHAR(ch) printchar (ch, printcharfun) |
| 207 | |
| 208 | /* This is used to restore the saved contents of print_buffer |
| 209 | when there is a recursive call to print. */ |
| 210 | |
| 211 | static Lisp_Object |
| 212 | print_unwind (Lisp_Object saved_text) |
| 213 | { |
| 214 | memcpy (print_buffer, SDATA (saved_text), SCHARS (saved_text)); |
| 215 | return Qnil; |
| 216 | } |
| 217 | |
| 218 | |
| 219 | /* Print character CH using method FUN. FUN nil means print to |
| 220 | print_buffer. FUN t means print to echo area or stdout if |
| 221 | non-interactive. If FUN is neither nil nor t, call FUN with CH as |
| 222 | argument. */ |
| 223 | |
| 224 | static void |
| 225 | printchar (unsigned int ch, Lisp_Object fun) |
| 226 | { |
| 227 | if (!NILP (fun) && !EQ (fun, Qt)) |
| 228 | call1 (fun, make_number (ch)); |
| 229 | else |
| 230 | { |
| 231 | unsigned char str[MAX_MULTIBYTE_LENGTH]; |
| 232 | int len = CHAR_STRING (ch, str); |
| 233 | |
| 234 | QUIT; |
| 235 | |
| 236 | if (NILP (fun)) |
| 237 | { |
| 238 | if (print_buffer_pos_byte + len >= print_buffer_size) |
| 239 | print_buffer = (char *) xrealloc (print_buffer, |
| 240 | print_buffer_size *= 2); |
| 241 | memcpy (print_buffer + print_buffer_pos_byte, str, len); |
| 242 | print_buffer_pos += 1; |
| 243 | print_buffer_pos_byte += len; |
| 244 | } |
| 245 | else if (noninteractive) |
| 246 | { |
| 247 | fwrite (str, 1, len, stdout); |
| 248 | noninteractive_need_newline = 1; |
| 249 | } |
| 250 | else |
| 251 | { |
| 252 | int multibyte_p |
| 253 | = !NILP (B_ (current_buffer, enable_multibyte_characters)); |
| 254 | |
| 255 | setup_echo_area_for_printing (multibyte_p); |
| 256 | insert_char (ch); |
| 257 | message_dolog ((char *) str, len, 0, multibyte_p); |
| 258 | } |
| 259 | } |
| 260 | } |
| 261 | |
| 262 | |
| 263 | /* Output SIZE characters, SIZE_BYTE bytes from string PTR using |
| 264 | method PRINTCHARFUN. If SIZE < 0, use the string length of PTR for |
| 265 | both SIZE and SIZE_BYTE. PRINTCHARFUN nil means output to |
| 266 | print_buffer. PRINTCHARFUN t means output to the echo area or to |
| 267 | stdout if non-interactive. If neither nil nor t, call Lisp |
| 268 | function PRINTCHARFUN for each character printed. MULTIBYTE |
| 269 | non-zero means PTR contains multibyte characters. |
| 270 | |
| 271 | In the case where PRINTCHARFUN is nil, it is safe for PTR to point |
| 272 | to data in a Lisp string. Otherwise that is not safe. */ |
| 273 | |
| 274 | static void |
| 275 | strout (const char *ptr, EMACS_INT size, EMACS_INT size_byte, |
| 276 | Lisp_Object printcharfun, int multibyte) |
| 277 | { |
| 278 | if (size < 0) |
| 279 | size_byte = size = strlen (ptr); |
| 280 | |
| 281 | if (NILP (printcharfun)) |
| 282 | { |
| 283 | if (print_buffer_pos_byte + size_byte > print_buffer_size) |
| 284 | { |
| 285 | print_buffer_size = print_buffer_size * 2 + size_byte; |
| 286 | print_buffer = (char *) xrealloc (print_buffer, |
| 287 | print_buffer_size); |
| 288 | } |
| 289 | memcpy (print_buffer + print_buffer_pos_byte, ptr, size_byte); |
| 290 | print_buffer_pos += size; |
| 291 | print_buffer_pos_byte += size_byte; |
| 292 | } |
| 293 | else if (noninteractive && EQ (printcharfun, Qt)) |
| 294 | { |
| 295 | fwrite (ptr, 1, size_byte, stdout); |
| 296 | noninteractive_need_newline = 1; |
| 297 | } |
| 298 | else if (EQ (printcharfun, Qt)) |
| 299 | { |
| 300 | /* Output to echo area. We're trying to avoid a little overhead |
| 301 | here, that's the reason we don't call printchar to do the |
| 302 | job. */ |
| 303 | int i; |
| 304 | int multibyte_p |
| 305 | = !NILP (B_ (current_buffer, enable_multibyte_characters)); |
| 306 | |
| 307 | setup_echo_area_for_printing (multibyte_p); |
| 308 | message_dolog (ptr, size_byte, 0, multibyte_p); |
| 309 | |
| 310 | if (size == size_byte) |
| 311 | { |
| 312 | for (i = 0; i < size; ++i) |
| 313 | insert_char ((unsigned char) *ptr++); |
| 314 | } |
| 315 | else |
| 316 | { |
| 317 | int len; |
| 318 | for (i = 0; i < size_byte; i += len) |
| 319 | { |
| 320 | int ch = STRING_CHAR_AND_LENGTH ((const unsigned char *) ptr + i, |
| 321 | len); |
| 322 | insert_char (ch); |
| 323 | } |
| 324 | } |
| 325 | } |
| 326 | else |
| 327 | { |
| 328 | /* PRINTCHARFUN is a Lisp function. */ |
| 329 | EMACS_INT i = 0; |
| 330 | |
| 331 | if (size == size_byte) |
| 332 | { |
| 333 | while (i < size_byte) |
| 334 | { |
| 335 | int ch = ptr[i++]; |
| 336 | PRINTCHAR (ch); |
| 337 | } |
| 338 | } |
| 339 | else |
| 340 | { |
| 341 | while (i < size_byte) |
| 342 | { |
| 343 | /* Here, we must convert each multi-byte form to the |
| 344 | corresponding character code before handing it to |
| 345 | PRINTCHAR. */ |
| 346 | int len; |
| 347 | int ch = STRING_CHAR_AND_LENGTH ((const unsigned char *) ptr + i, |
| 348 | len); |
| 349 | PRINTCHAR (ch); |
| 350 | i += len; |
| 351 | } |
| 352 | } |
| 353 | } |
| 354 | } |
| 355 | |
| 356 | /* Print the contents of a string STRING using PRINTCHARFUN. |
| 357 | It isn't safe to use strout in many cases, |
| 358 | because printing one char can relocate. */ |
| 359 | |
| 360 | static void |
| 361 | print_string (Lisp_Object string, Lisp_Object printcharfun) |
| 362 | { |
| 363 | if (EQ (printcharfun, Qt) || NILP (printcharfun)) |
| 364 | { |
| 365 | EMACS_INT chars; |
| 366 | |
| 367 | if (print_escape_nonascii) |
| 368 | string = string_escape_byte8 (string); |
| 369 | |
| 370 | if (STRING_MULTIBYTE (string)) |
| 371 | chars = SCHARS (string); |
| 372 | else if (! print_escape_nonascii |
| 373 | && (EQ (printcharfun, Qt) |
| 374 | ? ! NILP (B_ (&buffer_defaults, enable_multibyte_characters)) |
| 375 | : ! NILP (B_ (current_buffer, enable_multibyte_characters)))) |
| 376 | { |
| 377 | /* If unibyte string STRING contains 8-bit codes, we must |
| 378 | convert STRING to a multibyte string containing the same |
| 379 | character codes. */ |
| 380 | Lisp_Object newstr; |
| 381 | EMACS_INT bytes; |
| 382 | |
| 383 | chars = SBYTES (string); |
| 384 | bytes = parse_str_to_multibyte (SDATA (string), chars); |
| 385 | if (chars < bytes) |
| 386 | { |
| 387 | newstr = make_uninit_multibyte_string (chars, bytes); |
| 388 | memcpy (SDATA (newstr), SDATA (string), chars); |
| 389 | str_to_multibyte (SDATA (newstr), bytes, chars); |
| 390 | string = newstr; |
| 391 | } |
| 392 | } |
| 393 | else |
| 394 | chars = SBYTES (string); |
| 395 | |
| 396 | if (EQ (printcharfun, Qt)) |
| 397 | { |
| 398 | /* Output to echo area. */ |
| 399 | EMACS_INT nbytes = SBYTES (string); |
| 400 | char *buffer; |
| 401 | |
| 402 | /* Copy the string contents so that relocation of STRING by |
| 403 | GC does not cause trouble. */ |
| 404 | USE_SAFE_ALLOCA; |
| 405 | |
| 406 | SAFE_ALLOCA (buffer, char *, nbytes); |
| 407 | memcpy (buffer, SDATA (string), nbytes); |
| 408 | |
| 409 | strout (buffer, chars, SBYTES (string), |
| 410 | printcharfun, STRING_MULTIBYTE (string)); |
| 411 | |
| 412 | SAFE_FREE (); |
| 413 | } |
| 414 | else |
| 415 | /* No need to copy, since output to print_buffer can't GC. */ |
| 416 | strout (SSDATA (string), |
| 417 | chars, SBYTES (string), |
| 418 | printcharfun, STRING_MULTIBYTE (string)); |
| 419 | } |
| 420 | else |
| 421 | { |
| 422 | /* Otherwise, string may be relocated by printing one char. |
| 423 | So re-fetch the string address for each character. */ |
| 424 | EMACS_INT i; |
| 425 | EMACS_INT size = SCHARS (string); |
| 426 | EMACS_INT size_byte = SBYTES (string); |
| 427 | struct gcpro gcpro1; |
| 428 | GCPRO1 (string); |
| 429 | if (size == size_byte) |
| 430 | for (i = 0; i < size; i++) |
| 431 | PRINTCHAR (SREF (string, i)); |
| 432 | else |
| 433 | for (i = 0; i < size_byte; ) |
| 434 | { |
| 435 | /* Here, we must convert each multi-byte form to the |
| 436 | corresponding character code before handing it to PRINTCHAR. */ |
| 437 | int len; |
| 438 | int ch = STRING_CHAR_AND_LENGTH (SDATA (string) + i, len); |
| 439 | PRINTCHAR (ch); |
| 440 | i += len; |
| 441 | } |
| 442 | UNGCPRO; |
| 443 | } |
| 444 | } |
| 445 | \f |
| 446 | DEFUN ("write-char", Fwrite_char, Swrite_char, 1, 2, 0, |
| 447 | doc: /* Output character CHARACTER to stream PRINTCHARFUN. |
| 448 | PRINTCHARFUN defaults to the value of `standard-output' (which see). */) |
| 449 | (Lisp_Object character, Lisp_Object printcharfun) |
| 450 | { |
| 451 | PRINTDECLARE; |
| 452 | |
| 453 | if (NILP (printcharfun)) |
| 454 | printcharfun = Vstandard_output; |
| 455 | CHECK_NUMBER (character); |
| 456 | PRINTPREPARE; |
| 457 | PRINTCHAR (XINT (character)); |
| 458 | PRINTFINISH; |
| 459 | return character; |
| 460 | } |
| 461 | |
| 462 | /* Used from outside of print.c to print a block of SIZE |
| 463 | single-byte chars at DATA on the default output stream. |
| 464 | Do not use this on the contents of a Lisp string. */ |
| 465 | |
| 466 | void |
| 467 | write_string (const char *data, int size) |
| 468 | { |
| 469 | PRINTDECLARE; |
| 470 | Lisp_Object printcharfun; |
| 471 | |
| 472 | printcharfun = Vstandard_output; |
| 473 | |
| 474 | PRINTPREPARE; |
| 475 | strout (data, size, size, printcharfun, 0); |
| 476 | PRINTFINISH; |
| 477 | } |
| 478 | |
| 479 | /* Used to print a block of SIZE single-byte chars at DATA on a |
| 480 | specified stream PRINTCHARFUN. |
| 481 | Do not use this on the contents of a Lisp string. */ |
| 482 | |
| 483 | static void |
| 484 | write_string_1 (const char *data, int size, Lisp_Object printcharfun) |
| 485 | { |
| 486 | PRINTDECLARE; |
| 487 | |
| 488 | PRINTPREPARE; |
| 489 | strout (data, size, size, printcharfun, 0); |
| 490 | PRINTFINISH; |
| 491 | } |
| 492 | |
| 493 | |
| 494 | void |
| 495 | temp_output_buffer_setup (const char *bufname) |
| 496 | { |
| 497 | int count = SPECPDL_INDEX (); |
| 498 | register struct buffer *old = current_buffer; |
| 499 | register Lisp_Object buf; |
| 500 | |
| 501 | record_unwind_protect (set_buffer_if_live, Fcurrent_buffer ()); |
| 502 | |
| 503 | Fset_buffer (Fget_buffer_create (build_string (bufname))); |
| 504 | |
| 505 | Fkill_all_local_variables (); |
| 506 | delete_all_overlays (current_buffer); |
| 507 | B_ (current_buffer, directory) = B_ (old, directory); |
| 508 | B_ (current_buffer, read_only) = Qnil; |
| 509 | B_ (current_buffer, filename) = Qnil; |
| 510 | B_ (current_buffer, undo_list) = Qt; |
| 511 | eassert (current_buffer->overlays_before == NULL); |
| 512 | eassert (current_buffer->overlays_after == NULL); |
| 513 | B_ (current_buffer, enable_multibyte_characters) |
| 514 | = B_ (&buffer_defaults, enable_multibyte_characters); |
| 515 | specbind (Qinhibit_read_only, Qt); |
| 516 | specbind (Qinhibit_modification_hooks, Qt); |
| 517 | Ferase_buffer (); |
| 518 | XSETBUFFER (buf, current_buffer); |
| 519 | |
| 520 | Frun_hooks (1, &Qtemp_buffer_setup_hook); |
| 521 | |
| 522 | unbind_to (count, Qnil); |
| 523 | |
| 524 | specbind (Qstandard_output, buf); |
| 525 | } |
| 526 | |
| 527 | Lisp_Object |
| 528 | internal_with_output_to_temp_buffer (const char *bufname, Lisp_Object (*function) (Lisp_Object), Lisp_Object args) |
| 529 | { |
| 530 | int count = SPECPDL_INDEX (); |
| 531 | Lisp_Object buf, val; |
| 532 | struct gcpro gcpro1; |
| 533 | |
| 534 | GCPRO1 (args); |
| 535 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); |
| 536 | temp_output_buffer_setup (bufname); |
| 537 | buf = Vstandard_output; |
| 538 | UNGCPRO; |
| 539 | |
| 540 | val = (*function) (args); |
| 541 | |
| 542 | GCPRO1 (val); |
| 543 | temp_output_buffer_show (buf); |
| 544 | UNGCPRO; |
| 545 | |
| 546 | return unbind_to (count, val); |
| 547 | } |
| 548 | |
| 549 | DEFUN ("with-output-to-temp-buffer", |
| 550 | Fwith_output_to_temp_buffer, Swith_output_to_temp_buffer, |
| 551 | 1, UNEVALLED, 0, |
| 552 | doc: /* Bind `standard-output' to buffer BUFNAME, eval BODY, then show that buffer. |
| 553 | |
| 554 | This construct makes buffer BUFNAME empty before running BODY. |
| 555 | It does not make the buffer current for BODY. |
| 556 | Instead it binds `standard-output' to that buffer, so that output |
| 557 | generated with `prin1' and similar functions in BODY goes into |
| 558 | the buffer. |
| 559 | |
| 560 | At the end of BODY, this marks buffer BUFNAME unmodifed and displays |
| 561 | it in a window, but does not select it. The normal way to do this is |
| 562 | by calling `display-buffer', then running `temp-buffer-show-hook'. |
| 563 | However, if `temp-buffer-show-function' is non-nil, it calls that |
| 564 | function instead (and does not run `temp-buffer-show-hook'). The |
| 565 | function gets one argument, the buffer to display. |
| 566 | |
| 567 | The return value of `with-output-to-temp-buffer' is the value of the |
| 568 | last form in BODY. If BODY does not finish normally, the buffer |
| 569 | BUFNAME is not displayed. |
| 570 | |
| 571 | This runs the hook `temp-buffer-setup-hook' before BODY, |
| 572 | with the buffer BUFNAME temporarily current. It runs the hook |
| 573 | `temp-buffer-show-hook' after displaying buffer BUFNAME, with that |
| 574 | buffer temporarily current, and the window that was used to display it |
| 575 | temporarily selected. But it doesn't run `temp-buffer-show-hook' |
| 576 | if it uses `temp-buffer-show-function'. |
| 577 | |
| 578 | usage: (with-output-to-temp-buffer BUFNAME BODY...) */) |
| 579 | (Lisp_Object args) |
| 580 | { |
| 581 | struct gcpro gcpro1; |
| 582 | Lisp_Object name; |
| 583 | int count = SPECPDL_INDEX (); |
| 584 | Lisp_Object buf, val; |
| 585 | |
| 586 | GCPRO1(args); |
| 587 | name = Feval (Fcar (args)); |
| 588 | CHECK_STRING (name); |
| 589 | temp_output_buffer_setup (SSDATA (name)); |
| 590 | buf = Vstandard_output; |
| 591 | UNGCPRO; |
| 592 | |
| 593 | val = Fprogn (XCDR (args)); |
| 594 | |
| 595 | GCPRO1 (val); |
| 596 | temp_output_buffer_show (buf); |
| 597 | UNGCPRO; |
| 598 | |
| 599 | return unbind_to (count, val); |
| 600 | } |
| 601 | |
| 602 | \f |
| 603 | static void print (Lisp_Object obj, register Lisp_Object printcharfun, int escapeflag); |
| 604 | static void print_preprocess (Lisp_Object obj); |
| 605 | static void print_preprocess_string (INTERVAL interval, Lisp_Object arg); |
| 606 | static void print_object (Lisp_Object obj, register Lisp_Object printcharfun, int escapeflag); |
| 607 | |
| 608 | DEFUN ("terpri", Fterpri, Sterpri, 0, 1, 0, |
| 609 | doc: /* Output a newline to stream PRINTCHARFUN. |
| 610 | If PRINTCHARFUN is omitted or nil, the value of `standard-output' is used. */) |
| 611 | (Lisp_Object printcharfun) |
| 612 | { |
| 613 | PRINTDECLARE; |
| 614 | |
| 615 | if (NILP (printcharfun)) |
| 616 | printcharfun = Vstandard_output; |
| 617 | PRINTPREPARE; |
| 618 | PRINTCHAR ('\n'); |
| 619 | PRINTFINISH; |
| 620 | return Qt; |
| 621 | } |
| 622 | |
| 623 | DEFUN ("prin1", Fprin1, Sprin1, 1, 2, 0, |
| 624 | doc: /* Output the printed representation of OBJECT, any Lisp object. |
| 625 | Quoting characters are printed when needed to make output that `read' |
| 626 | can handle, whenever this is possible. For complex objects, the behavior |
| 627 | is controlled by `print-level' and `print-length', which see. |
| 628 | |
| 629 | OBJECT is any of the Lisp data types: a number, a string, a symbol, |
| 630 | a list, a buffer, a window, a frame, etc. |
| 631 | |
| 632 | A printed representation of an object is text which describes that object. |
| 633 | |
| 634 | Optional argument PRINTCHARFUN is the output stream, which can be one |
| 635 | of these: |
| 636 | |
| 637 | - a buffer, in which case output is inserted into that buffer at point; |
| 638 | - a marker, in which case output is inserted at marker's position; |
| 639 | - a function, in which case that function is called once for each |
| 640 | character of OBJECT's printed representation; |
| 641 | - a symbol, in which case that symbol's function definition is called; or |
| 642 | - t, in which case the output is displayed in the echo area. |
| 643 | |
| 644 | If PRINTCHARFUN is omitted, the value of `standard-output' (which see) |
| 645 | is used instead. */) |
| 646 | (Lisp_Object object, Lisp_Object printcharfun) |
| 647 | { |
| 648 | PRINTDECLARE; |
| 649 | |
| 650 | if (NILP (printcharfun)) |
| 651 | printcharfun = Vstandard_output; |
| 652 | PRINTPREPARE; |
| 653 | print (object, printcharfun, 1); |
| 654 | PRINTFINISH; |
| 655 | return object; |
| 656 | } |
| 657 | |
| 658 | /* a buffer which is used to hold output being built by prin1-to-string */ |
| 659 | Lisp_Object Vprin1_to_string_buffer; |
| 660 | |
| 661 | DEFUN ("prin1-to-string", Fprin1_to_string, Sprin1_to_string, 1, 2, 0, |
| 662 | doc: /* Return a string containing the printed representation of OBJECT. |
| 663 | OBJECT can be any Lisp object. This function outputs quoting characters |
| 664 | when necessary to make output that `read' can handle, whenever possible, |
| 665 | unless the optional second argument NOESCAPE is non-nil. For complex objects, |
| 666 | the behavior is controlled by `print-level' and `print-length', which see. |
| 667 | |
| 668 | OBJECT is any of the Lisp data types: a number, a string, a symbol, |
| 669 | a list, a buffer, a window, a frame, etc. |
| 670 | |
| 671 | A printed representation of an object is text which describes that object. */) |
| 672 | (Lisp_Object object, Lisp_Object noescape) |
| 673 | { |
| 674 | Lisp_Object printcharfun; |
| 675 | /* struct gcpro gcpro1, gcpro2; */ |
| 676 | Lisp_Object save_deactivate_mark; |
| 677 | int count = SPECPDL_INDEX (); |
| 678 | struct buffer *previous; |
| 679 | |
| 680 | specbind (Qinhibit_modification_hooks, Qt); |
| 681 | |
| 682 | { |
| 683 | PRINTDECLARE; |
| 684 | |
| 685 | /* Save and restore this--we are altering a buffer |
| 686 | but we don't want to deactivate the mark just for that. |
| 687 | No need for specbind, since errors deactivate the mark. */ |
| 688 | save_deactivate_mark = Vdeactivate_mark; |
| 689 | /* GCPRO2 (object, save_deactivate_mark); */ |
| 690 | abort_on_gc++; |
| 691 | |
| 692 | printcharfun = Vprin1_to_string_buffer; |
| 693 | PRINTPREPARE; |
| 694 | print (object, printcharfun, NILP (noescape)); |
| 695 | /* Make Vprin1_to_string_buffer be the default buffer after PRINTFINSH */ |
| 696 | PRINTFINISH; |
| 697 | } |
| 698 | |
| 699 | previous = current_buffer; |
| 700 | set_buffer_internal (XBUFFER (Vprin1_to_string_buffer)); |
| 701 | object = Fbuffer_string (); |
| 702 | if (SBYTES (object) == SCHARS (object)) |
| 703 | STRING_SET_UNIBYTE (object); |
| 704 | |
| 705 | /* Note that this won't make prepare_to_modify_buffer call |
| 706 | ask-user-about-supersession-threat because this buffer |
| 707 | does not visit a file. */ |
| 708 | Ferase_buffer (); |
| 709 | set_buffer_internal (previous); |
| 710 | |
| 711 | Vdeactivate_mark = save_deactivate_mark; |
| 712 | /* UNGCPRO; */ |
| 713 | |
| 714 | abort_on_gc--; |
| 715 | return unbind_to (count, object); |
| 716 | } |
| 717 | |
| 718 | DEFUN ("princ", Fprinc, Sprinc, 1, 2, 0, |
| 719 | doc: /* Output the printed representation of OBJECT, any Lisp object. |
| 720 | No quoting characters are used; no delimiters are printed around |
| 721 | the contents of strings. |
| 722 | |
| 723 | OBJECT is any of the Lisp data types: a number, a string, a symbol, |
| 724 | a list, a buffer, a window, a frame, etc. |
| 725 | |
| 726 | A printed representation of an object is text which describes that object. |
| 727 | |
| 728 | Optional argument PRINTCHARFUN is the output stream, which can be one |
| 729 | of these: |
| 730 | |
| 731 | - a buffer, in which case output is inserted into that buffer at point; |
| 732 | - a marker, in which case output is inserted at marker's position; |
| 733 | - a function, in which case that function is called once for each |
| 734 | character of OBJECT's printed representation; |
| 735 | - a symbol, in which case that symbol's function definition is called; or |
| 736 | - t, in which case the output is displayed in the echo area. |
| 737 | |
| 738 | If PRINTCHARFUN is omitted, the value of `standard-output' (which see) |
| 739 | is used instead. */) |
| 740 | (Lisp_Object object, Lisp_Object printcharfun) |
| 741 | { |
| 742 | PRINTDECLARE; |
| 743 | |
| 744 | if (NILP (printcharfun)) |
| 745 | printcharfun = Vstandard_output; |
| 746 | PRINTPREPARE; |
| 747 | print (object, printcharfun, 0); |
| 748 | PRINTFINISH; |
| 749 | return object; |
| 750 | } |
| 751 | |
| 752 | DEFUN ("print", Fprint, Sprint, 1, 2, 0, |
| 753 | doc: /* Output the printed representation of OBJECT, with newlines around it. |
| 754 | Quoting characters are printed when needed to make output that `read' |
| 755 | can handle, whenever this is possible. For complex objects, the behavior |
| 756 | is controlled by `print-level' and `print-length', which see. |
| 757 | |
| 758 | OBJECT is any of the Lisp data types: a number, a string, a symbol, |
| 759 | a list, a buffer, a window, a frame, etc. |
| 760 | |
| 761 | A printed representation of an object is text which describes that object. |
| 762 | |
| 763 | Optional argument PRINTCHARFUN is the output stream, which can be one |
| 764 | of these: |
| 765 | |
| 766 | - a buffer, in which case output is inserted into that buffer at point; |
| 767 | - a marker, in which case output is inserted at marker's position; |
| 768 | - a function, in which case that function is called once for each |
| 769 | character of OBJECT's printed representation; |
| 770 | - a symbol, in which case that symbol's function definition is called; or |
| 771 | - t, in which case the output is displayed in the echo area. |
| 772 | |
| 773 | If PRINTCHARFUN is omitted, the value of `standard-output' (which see) |
| 774 | is used instead. */) |
| 775 | (Lisp_Object object, Lisp_Object printcharfun) |
| 776 | { |
| 777 | PRINTDECLARE; |
| 778 | struct gcpro gcpro1; |
| 779 | |
| 780 | if (NILP (printcharfun)) |
| 781 | printcharfun = Vstandard_output; |
| 782 | GCPRO1 (object); |
| 783 | PRINTPREPARE; |
| 784 | PRINTCHAR ('\n'); |
| 785 | print (object, printcharfun, 1); |
| 786 | PRINTCHAR ('\n'); |
| 787 | PRINTFINISH; |
| 788 | UNGCPRO; |
| 789 | return object; |
| 790 | } |
| 791 | |
| 792 | /* The subroutine object for external-debugging-output is kept here |
| 793 | for the convenience of the debugger. */ |
| 794 | Lisp_Object Qexternal_debugging_output; |
| 795 | |
| 796 | DEFUN ("external-debugging-output", Fexternal_debugging_output, Sexternal_debugging_output, 1, 1, 0, |
| 797 | doc: /* Write CHARACTER to stderr. |
| 798 | You can call print while debugging emacs, and pass it this function |
| 799 | to make it write to the debugging output. */) |
| 800 | (Lisp_Object character) |
| 801 | { |
| 802 | CHECK_NUMBER (character); |
| 803 | putc ((int) XINT (character), stderr); |
| 804 | |
| 805 | #ifdef WINDOWSNT |
| 806 | /* Send the output to a debugger (nothing happens if there isn't one). */ |
| 807 | if (print_output_debug_flag) |
| 808 | { |
| 809 | char buf[2] = {(char) XINT (character), '\0'}; |
| 810 | OutputDebugString (buf); |
| 811 | } |
| 812 | #endif |
| 813 | |
| 814 | return character; |
| 815 | } |
| 816 | |
| 817 | /* This function is never called. Its purpose is to prevent |
| 818 | print_output_debug_flag from being optimized away. */ |
| 819 | |
| 820 | void |
| 821 | debug_output_compilation_hack (int x) |
| 822 | { |
| 823 | print_output_debug_flag = x; |
| 824 | } |
| 825 | |
| 826 | #if defined (GNU_LINUX) |
| 827 | |
| 828 | /* This functionality is not vitally important in general, so we rely on |
| 829 | non-portable ability to use stderr as lvalue. */ |
| 830 | |
| 831 | #define WITH_REDIRECT_DEBUGGING_OUTPUT 1 |
| 832 | |
| 833 | FILE *initial_stderr_stream = NULL; |
| 834 | |
| 835 | DEFUN ("redirect-debugging-output", Fredirect_debugging_output, Sredirect_debugging_output, |
| 836 | 1, 2, |
| 837 | "FDebug output file: \nP", |
| 838 | doc: /* Redirect debugging output (stderr stream) to file FILE. |
| 839 | If FILE is nil, reset target to the initial stderr stream. |
| 840 | Optional arg APPEND non-nil (interactively, with prefix arg) means |
| 841 | append to existing target file. */) |
| 842 | (Lisp_Object file, Lisp_Object append) |
| 843 | { |
| 844 | if (initial_stderr_stream != NULL) |
| 845 | { |
| 846 | BLOCK_INPUT; |
| 847 | fclose (stderr); |
| 848 | UNBLOCK_INPUT; |
| 849 | } |
| 850 | stderr = initial_stderr_stream; |
| 851 | initial_stderr_stream = NULL; |
| 852 | |
| 853 | if (STRINGP (file)) |
| 854 | { |
| 855 | file = Fexpand_file_name (file, Qnil); |
| 856 | initial_stderr_stream = stderr; |
| 857 | stderr = fopen (SDATA (file), NILP (append) ? "w" : "a"); |
| 858 | if (stderr == NULL) |
| 859 | { |
| 860 | stderr = initial_stderr_stream; |
| 861 | initial_stderr_stream = NULL; |
| 862 | report_file_error ("Cannot open debugging output stream", |
| 863 | Fcons (file, Qnil)); |
| 864 | } |
| 865 | } |
| 866 | return Qnil; |
| 867 | } |
| 868 | #endif /* GNU_LINUX */ |
| 869 | |
| 870 | |
| 871 | /* This is the interface for debugging printing. */ |
| 872 | |
| 873 | void |
| 874 | debug_print (Lisp_Object arg) |
| 875 | { |
| 876 | Fprin1 (arg, Qexternal_debugging_output); |
| 877 | fprintf (stderr, "\r\n"); |
| 878 | } |
| 879 | |
| 880 | void |
| 881 | safe_debug_print (Lisp_Object arg) |
| 882 | { |
| 883 | int valid = valid_lisp_object_p (arg); |
| 884 | |
| 885 | if (valid > 0) |
| 886 | debug_print (arg); |
| 887 | else |
| 888 | fprintf (stderr, "#<%s_LISP_OBJECT 0x%08lx>\r\n", |
| 889 | !valid ? "INVALID" : "SOME", |
| 890 | (unsigned long) XHASH (arg) |
| 891 | ); |
| 892 | } |
| 893 | |
| 894 | \f |
| 895 | DEFUN ("error-message-string", Ferror_message_string, Serror_message_string, |
| 896 | 1, 1, 0, |
| 897 | doc: /* Convert an error value (ERROR-SYMBOL . DATA) to an error message. |
| 898 | See Info anchor `(elisp)Definition of signal' for some details on how this |
| 899 | error message is constructed. */) |
| 900 | (Lisp_Object obj) |
| 901 | { |
| 902 | struct buffer *old = current_buffer; |
| 903 | Lisp_Object value; |
| 904 | struct gcpro gcpro1; |
| 905 | |
| 906 | /* If OBJ is (error STRING), just return STRING. |
| 907 | That is not only faster, it also avoids the need to allocate |
| 908 | space here when the error is due to memory full. */ |
| 909 | if (CONSP (obj) && EQ (XCAR (obj), Qerror) |
| 910 | && CONSP (XCDR (obj)) |
| 911 | && STRINGP (XCAR (XCDR (obj))) |
| 912 | && NILP (XCDR (XCDR (obj)))) |
| 913 | return XCAR (XCDR (obj)); |
| 914 | |
| 915 | print_error_message (obj, Vprin1_to_string_buffer, 0, Qnil); |
| 916 | |
| 917 | set_buffer_internal (XBUFFER (Vprin1_to_string_buffer)); |
| 918 | value = Fbuffer_string (); |
| 919 | |
| 920 | GCPRO1 (value); |
| 921 | Ferase_buffer (); |
| 922 | set_buffer_internal (old); |
| 923 | UNGCPRO; |
| 924 | |
| 925 | return value; |
| 926 | } |
| 927 | |
| 928 | /* Print an error message for the error DATA onto Lisp output stream |
| 929 | STREAM (suitable for the print functions). |
| 930 | CONTEXT is a C string describing the context of the error. |
| 931 | CALLER is the Lisp function inside which the error was signaled. */ |
| 932 | |
| 933 | void |
| 934 | print_error_message (Lisp_Object data, Lisp_Object stream, const char *context, |
| 935 | Lisp_Object caller) |
| 936 | { |
| 937 | Lisp_Object errname, errmsg, file_error, tail; |
| 938 | struct gcpro gcpro1; |
| 939 | int i; |
| 940 | |
| 941 | if (context != 0) |
| 942 | write_string_1 (context, -1, stream); |
| 943 | |
| 944 | /* If we know from where the error was signaled, show it in |
| 945 | *Messages*. */ |
| 946 | if (!NILP (caller) && SYMBOLP (caller)) |
| 947 | { |
| 948 | Lisp_Object cname = SYMBOL_NAME (caller); |
| 949 | char *name = alloca (SBYTES (cname)); |
| 950 | memcpy (name, SDATA (cname), SBYTES (cname)); |
| 951 | message_dolog (name, SBYTES (cname), 0, 0); |
| 952 | message_dolog (": ", 2, 0, 0); |
| 953 | } |
| 954 | |
| 955 | errname = Fcar (data); |
| 956 | |
| 957 | if (EQ (errname, Qerror)) |
| 958 | { |
| 959 | data = Fcdr (data); |
| 960 | if (!CONSP (data)) |
| 961 | data = Qnil; |
| 962 | errmsg = Fcar (data); |
| 963 | file_error = Qnil; |
| 964 | } |
| 965 | else |
| 966 | { |
| 967 | Lisp_Object error_conditions; |
| 968 | errmsg = Fget (errname, Qerror_message); |
| 969 | error_conditions = Fget (errname, Qerror_conditions); |
| 970 | file_error = Fmemq (Qfile_error, error_conditions); |
| 971 | } |
| 972 | |
| 973 | /* Print an error message including the data items. */ |
| 974 | |
| 975 | tail = Fcdr_safe (data); |
| 976 | GCPRO1 (tail); |
| 977 | |
| 978 | /* For file-error, make error message by concatenating |
| 979 | all the data items. They are all strings. */ |
| 980 | if (!NILP (file_error) && CONSP (tail)) |
| 981 | errmsg = XCAR (tail), tail = XCDR (tail); |
| 982 | |
| 983 | if (STRINGP (errmsg)) |
| 984 | Fprinc (errmsg, stream); |
| 985 | else |
| 986 | write_string_1 ("peculiar error", -1, stream); |
| 987 | |
| 988 | for (i = 0; CONSP (tail); tail = XCDR (tail), i++) |
| 989 | { |
| 990 | Lisp_Object obj; |
| 991 | |
| 992 | write_string_1 (i ? ", " : ": ", 2, stream); |
| 993 | obj = XCAR (tail); |
| 994 | if (!NILP (file_error) || EQ (errname, Qend_of_file)) |
| 995 | Fprinc (obj, stream); |
| 996 | else |
| 997 | Fprin1 (obj, stream); |
| 998 | } |
| 999 | |
| 1000 | UNGCPRO; |
| 1001 | } |
| 1002 | |
| 1003 | |
| 1004 | \f |
| 1005 | /* |
| 1006 | * The buffer should be at least as large as the max string size of the |
| 1007 | * largest float, printed in the biggest notation. This is undoubtedly |
| 1008 | * 20d float_output_format, with the negative of the C-constant "HUGE" |
| 1009 | * from <math.h>. |
| 1010 | * |
| 1011 | * On the vax the worst case is -1e38 in 20d format which takes 61 bytes. |
| 1012 | * |
| 1013 | * I assume that IEEE-754 format numbers can take 329 bytes for the worst |
| 1014 | * case of -1e307 in 20d float_output_format. What is one to do (short of |
| 1015 | * re-writing _doprnt to be more sane)? |
| 1016 | * -wsr |
| 1017 | * Given the above, the buffer must be least FLOAT_TO_STRING_BUFSIZE bytes. |
| 1018 | */ |
| 1019 | |
| 1020 | void |
| 1021 | float_to_string (char *buf, double data) |
| 1022 | { |
| 1023 | char *cp; |
| 1024 | int width; |
| 1025 | |
| 1026 | /* Check for plus infinity in a way that won't lose |
| 1027 | if there is no plus infinity. */ |
| 1028 | if (data == data / 2 && data > 1.0) |
| 1029 | { |
| 1030 | strcpy (buf, "1.0e+INF"); |
| 1031 | return; |
| 1032 | } |
| 1033 | /* Likewise for minus infinity. */ |
| 1034 | if (data == data / 2 && data < -1.0) |
| 1035 | { |
| 1036 | strcpy (buf, "-1.0e+INF"); |
| 1037 | return; |
| 1038 | } |
| 1039 | /* Check for NaN in a way that won't fail if there are no NaNs. */ |
| 1040 | if (! (data * 0.0 >= 0.0)) |
| 1041 | { |
| 1042 | /* Prepend "-" if the NaN's sign bit is negative. |
| 1043 | The sign bit of a double is the bit that is 1 in -0.0. */ |
| 1044 | int i; |
| 1045 | union { double d; char c[sizeof (double)]; } u_data, u_minus_zero; |
| 1046 | u_data.d = data; |
| 1047 | u_minus_zero.d = - 0.0; |
| 1048 | for (i = 0; i < sizeof (double); i++) |
| 1049 | if (u_data.c[i] & u_minus_zero.c[i]) |
| 1050 | { |
| 1051 | *buf++ = '-'; |
| 1052 | break; |
| 1053 | } |
| 1054 | |
| 1055 | strcpy (buf, "0.0e+NaN"); |
| 1056 | return; |
| 1057 | } |
| 1058 | |
| 1059 | if (NILP (Vfloat_output_format) |
| 1060 | || !STRINGP (Vfloat_output_format)) |
| 1061 | lose: |
| 1062 | { |
| 1063 | /* Generate the fewest number of digits that represent the |
| 1064 | floating point value without losing information. */ |
| 1065 | dtoastr (buf, FLOAT_TO_STRING_BUFSIZE - 2, 0, 0, data); |
| 1066 | /* The decimal point must be printed, or the byte compiler can |
| 1067 | get confused (Bug#8033). */ |
| 1068 | width = 1; |
| 1069 | } |
| 1070 | else /* oink oink */ |
| 1071 | { |
| 1072 | /* Check that the spec we have is fully valid. |
| 1073 | This means not only valid for printf, |
| 1074 | but meant for floats, and reasonable. */ |
| 1075 | cp = SSDATA (Vfloat_output_format); |
| 1076 | |
| 1077 | if (cp[0] != '%') |
| 1078 | goto lose; |
| 1079 | if (cp[1] != '.') |
| 1080 | goto lose; |
| 1081 | |
| 1082 | cp += 2; |
| 1083 | |
| 1084 | /* Check the width specification. */ |
| 1085 | width = -1; |
| 1086 | if ('0' <= *cp && *cp <= '9') |
| 1087 | { |
| 1088 | width = 0; |
| 1089 | do |
| 1090 | width = (width * 10) + (*cp++ - '0'); |
| 1091 | while (*cp >= '0' && *cp <= '9'); |
| 1092 | |
| 1093 | /* A precision of zero is valid only for %f. */ |
| 1094 | if (width > DBL_DIG |
| 1095 | || (width == 0 && *cp != 'f')) |
| 1096 | goto lose; |
| 1097 | } |
| 1098 | |
| 1099 | if (*cp != 'e' && *cp != 'f' && *cp != 'g') |
| 1100 | goto lose; |
| 1101 | |
| 1102 | if (cp[1] != 0) |
| 1103 | goto lose; |
| 1104 | |
| 1105 | sprintf (buf, SSDATA (Vfloat_output_format), data); |
| 1106 | } |
| 1107 | |
| 1108 | /* Make sure there is a decimal point with digit after, or an |
| 1109 | exponent, so that the value is readable as a float. But don't do |
| 1110 | this with "%.0f"; it's valid for that not to produce a decimal |
| 1111 | point. Note that width can be 0 only for %.0f. */ |
| 1112 | if (width != 0) |
| 1113 | { |
| 1114 | for (cp = buf; *cp; cp++) |
| 1115 | if ((*cp < '0' || *cp > '9') && *cp != '-') |
| 1116 | break; |
| 1117 | |
| 1118 | if (*cp == '.' && cp[1] == 0) |
| 1119 | { |
| 1120 | cp[1] = '0'; |
| 1121 | cp[2] = 0; |
| 1122 | } |
| 1123 | else if (*cp == 0) |
| 1124 | { |
| 1125 | *cp++ = '.'; |
| 1126 | *cp++ = '0'; |
| 1127 | *cp++ = 0; |
| 1128 | } |
| 1129 | } |
| 1130 | } |
| 1131 | |
| 1132 | \f |
| 1133 | static void |
| 1134 | print (Lisp_Object obj, register Lisp_Object printcharfun, int escapeflag) |
| 1135 | { |
| 1136 | new_backquote_output = 0; |
| 1137 | |
| 1138 | /* Reset print_number_index and Vprint_number_table only when |
| 1139 | the variable Vprint_continuous_numbering is nil. Otherwise, |
| 1140 | the values of these variables will be kept between several |
| 1141 | print functions. */ |
| 1142 | if (NILP (Vprint_continuous_numbering) |
| 1143 | || NILP (Vprint_number_table)) |
| 1144 | { |
| 1145 | print_number_index = 0; |
| 1146 | Vprint_number_table = Qnil; |
| 1147 | } |
| 1148 | |
| 1149 | /* Construct Vprint_number_table for print-gensym and print-circle. */ |
| 1150 | if (!NILP (Vprint_gensym) || !NILP (Vprint_circle)) |
| 1151 | { |
| 1152 | /* Construct Vprint_number_table. |
| 1153 | This increments print_number_index for the objects added. */ |
| 1154 | print_depth = 0; |
| 1155 | print_preprocess (obj); |
| 1156 | |
| 1157 | if (HASH_TABLE_P (Vprint_number_table)) |
| 1158 | { /* Remove unnecessary objects, which appear only once in OBJ; |
| 1159 | that is, whose status is Qt. |
| 1160 | Maybe a better way to do that is to copy elements to |
| 1161 | a new hash table. */ |
| 1162 | struct Lisp_Hash_Table *h = XHASH_TABLE (Vprint_number_table); |
| 1163 | int i; |
| 1164 | |
| 1165 | for (i = 0; i < HASH_TABLE_SIZE (h); ++i) |
| 1166 | if (!NILP (HASH_HASH (h, i)) |
| 1167 | && EQ (HASH_VALUE (h, i), Qt)) |
| 1168 | Fremhash (HASH_KEY (h, i), Vprint_number_table); |
| 1169 | } |
| 1170 | } |
| 1171 | |
| 1172 | print_depth = 0; |
| 1173 | print_object (obj, printcharfun, escapeflag); |
| 1174 | } |
| 1175 | |
| 1176 | /* Construct Vprint_number_table according to the structure of OBJ. |
| 1177 | OBJ itself and all its elements will be added to Vprint_number_table |
| 1178 | recursively if it is a list, vector, compiled function, char-table, |
| 1179 | string (its text properties will be traced), or a symbol that has |
| 1180 | no obarray (this is for the print-gensym feature). |
| 1181 | The status fields of Vprint_number_table mean whether each object appears |
| 1182 | more than once in OBJ: Qnil at the first time, and Qt after that . */ |
| 1183 | static void |
| 1184 | print_preprocess (Lisp_Object obj) |
| 1185 | { |
| 1186 | int i; |
| 1187 | EMACS_INT size; |
| 1188 | int loop_count = 0; |
| 1189 | Lisp_Object halftail; |
| 1190 | |
| 1191 | /* Give up if we go so deep that print_object will get an error. */ |
| 1192 | /* See similar code in print_object. */ |
| 1193 | if (print_depth >= PRINT_CIRCLE) |
| 1194 | error ("Apparently circular structure being printed"); |
| 1195 | |
| 1196 | /* Avoid infinite recursion for circular nested structure |
| 1197 | in the case where Vprint_circle is nil. */ |
| 1198 | if (NILP (Vprint_circle)) |
| 1199 | { |
| 1200 | for (i = 0; i < print_depth; i++) |
| 1201 | if (EQ (obj, being_printed[i])) |
| 1202 | return; |
| 1203 | being_printed[print_depth] = obj; |
| 1204 | } |
| 1205 | |
| 1206 | print_depth++; |
| 1207 | halftail = obj; |
| 1208 | |
| 1209 | loop: |
| 1210 | if (STRINGP (obj) || CONSP (obj) || VECTORP (obj) |
| 1211 | || COMPILEDP (obj) || CHAR_TABLE_P (obj) || SUB_CHAR_TABLE_P (obj) |
| 1212 | || HASH_TABLE_P (obj) |
| 1213 | || (! NILP (Vprint_gensym) |
| 1214 | && SYMBOLP (obj) |
| 1215 | && !SYMBOL_INTERNED_P (obj))) |
| 1216 | { |
| 1217 | if (!HASH_TABLE_P (Vprint_number_table)) |
| 1218 | { |
| 1219 | Lisp_Object args[2]; |
| 1220 | args[0] = QCtest; |
| 1221 | args[1] = Qeq; |
| 1222 | Vprint_number_table = Fmake_hash_table (2, args); |
| 1223 | } |
| 1224 | |
| 1225 | /* In case print-circle is nil and print-gensym is t, |
| 1226 | add OBJ to Vprint_number_table only when OBJ is a symbol. */ |
| 1227 | if (! NILP (Vprint_circle) || SYMBOLP (obj)) |
| 1228 | { |
| 1229 | Lisp_Object num = Fgethash (obj, Vprint_number_table, Qnil); |
| 1230 | if (!NILP (num) |
| 1231 | /* If Vprint_continuous_numbering is non-nil and OBJ is a gensym, |
| 1232 | always print the gensym with a number. This is a special for |
| 1233 | the lisp function byte-compile-output-docform. */ |
| 1234 | || (!NILP (Vprint_continuous_numbering) |
| 1235 | && SYMBOLP (obj) |
| 1236 | && !SYMBOL_INTERNED_P (obj))) |
| 1237 | { /* OBJ appears more than once. Let's remember that. */ |
| 1238 | if (!INTEGERP (num)) |
| 1239 | { |
| 1240 | print_number_index++; |
| 1241 | /* Negative number indicates it hasn't been printed yet. */ |
| 1242 | Fputhash (obj, make_number (- print_number_index), |
| 1243 | Vprint_number_table); |
| 1244 | } |
| 1245 | print_depth--; |
| 1246 | return; |
| 1247 | } |
| 1248 | else |
| 1249 | /* OBJ is not yet recorded. Let's add to the table. */ |
| 1250 | Fputhash (obj, Qt, Vprint_number_table); |
| 1251 | } |
| 1252 | |
| 1253 | switch (XTYPE (obj)) |
| 1254 | { |
| 1255 | case Lisp_String: |
| 1256 | /* A string may have text properties, which can be circular. */ |
| 1257 | traverse_intervals_noorder (STRING_INTERVALS (obj), |
| 1258 | print_preprocess_string, Qnil); |
| 1259 | break; |
| 1260 | |
| 1261 | case Lisp_Cons: |
| 1262 | /* Use HALFTAIL and LOOP_COUNT to detect circular lists, |
| 1263 | just as in print_object. */ |
| 1264 | if (loop_count && EQ (obj, halftail)) |
| 1265 | break; |
| 1266 | print_preprocess (XCAR (obj)); |
| 1267 | obj = XCDR (obj); |
| 1268 | loop_count++; |
| 1269 | if (!(loop_count & 1)) |
| 1270 | halftail = XCDR (halftail); |
| 1271 | goto loop; |
| 1272 | |
| 1273 | case Lisp_Vectorlike: |
| 1274 | size = XVECTOR (obj)->size; |
| 1275 | if (size & PSEUDOVECTOR_FLAG) |
| 1276 | size &= PSEUDOVECTOR_SIZE_MASK; |
| 1277 | for (i = 0; i < size; i++) |
| 1278 | print_preprocess (XVECTOR (obj)->contents[i]); |
| 1279 | if (HASH_TABLE_P (obj)) |
| 1280 | { /* For hash tables, the key_and_value slot is past |
| 1281 | `size' because it needs to be marked specially in case |
| 1282 | the table is weak. */ |
| 1283 | struct Lisp_Hash_Table *h = XHASH_TABLE (obj); |
| 1284 | print_preprocess (h->key_and_value); |
| 1285 | } |
| 1286 | break; |
| 1287 | |
| 1288 | default: |
| 1289 | break; |
| 1290 | } |
| 1291 | } |
| 1292 | print_depth--; |
| 1293 | } |
| 1294 | |
| 1295 | static void |
| 1296 | print_preprocess_string (INTERVAL interval, Lisp_Object arg) |
| 1297 | { |
| 1298 | print_preprocess (interval->plist); |
| 1299 | } |
| 1300 | |
| 1301 | static void print_check_string_charset_prop (INTERVAL interval, Lisp_Object string); |
| 1302 | |
| 1303 | #define PRINT_STRING_NON_CHARSET_FOUND 1 |
| 1304 | #define PRINT_STRING_UNSAFE_CHARSET_FOUND 2 |
| 1305 | |
| 1306 | /* Bitwise or of the above macros. */ |
| 1307 | static int print_check_string_result; |
| 1308 | |
| 1309 | static void |
| 1310 | print_check_string_charset_prop (INTERVAL interval, Lisp_Object string) |
| 1311 | { |
| 1312 | Lisp_Object val; |
| 1313 | |
| 1314 | if (NILP (interval->plist) |
| 1315 | || (print_check_string_result == (PRINT_STRING_NON_CHARSET_FOUND |
| 1316 | | PRINT_STRING_UNSAFE_CHARSET_FOUND))) |
| 1317 | return; |
| 1318 | for (val = interval->plist; CONSP (val) && ! EQ (XCAR (val), Qcharset); |
| 1319 | val = XCDR (XCDR (val))); |
| 1320 | if (! CONSP (val)) |
| 1321 | { |
| 1322 | print_check_string_result |= PRINT_STRING_NON_CHARSET_FOUND; |
| 1323 | return; |
| 1324 | } |
| 1325 | if (! (print_check_string_result & PRINT_STRING_NON_CHARSET_FOUND)) |
| 1326 | { |
| 1327 | if (! EQ (val, interval->plist) |
| 1328 | || CONSP (XCDR (XCDR (val)))) |
| 1329 | print_check_string_result |= PRINT_STRING_NON_CHARSET_FOUND; |
| 1330 | } |
| 1331 | if (NILP (Vprint_charset_text_property) |
| 1332 | || ! (print_check_string_result & PRINT_STRING_UNSAFE_CHARSET_FOUND)) |
| 1333 | { |
| 1334 | int i, c; |
| 1335 | EMACS_INT charpos = interval->position; |
| 1336 | EMACS_INT bytepos = string_char_to_byte (string, charpos); |
| 1337 | Lisp_Object charset; |
| 1338 | |
| 1339 | charset = XCAR (XCDR (val)); |
| 1340 | for (i = 0; i < LENGTH (interval); i++) |
| 1341 | { |
| 1342 | FETCH_STRING_CHAR_ADVANCE (c, string, charpos, bytepos); |
| 1343 | if (! ASCII_CHAR_P (c) |
| 1344 | && ! EQ (CHARSET_NAME (CHAR_CHARSET (c)), charset)) |
| 1345 | { |
| 1346 | print_check_string_result |= PRINT_STRING_UNSAFE_CHARSET_FOUND; |
| 1347 | break; |
| 1348 | } |
| 1349 | } |
| 1350 | } |
| 1351 | } |
| 1352 | |
| 1353 | /* The value is (charset . nil). */ |
| 1354 | static Lisp_Object print_prune_charset_plist; |
| 1355 | |
| 1356 | static Lisp_Object |
| 1357 | print_prune_string_charset (Lisp_Object string) |
| 1358 | { |
| 1359 | print_check_string_result = 0; |
| 1360 | traverse_intervals (STRING_INTERVALS (string), 0, |
| 1361 | print_check_string_charset_prop, string); |
| 1362 | if (! (print_check_string_result & PRINT_STRING_UNSAFE_CHARSET_FOUND)) |
| 1363 | { |
| 1364 | string = Fcopy_sequence (string); |
| 1365 | if (print_check_string_result & PRINT_STRING_NON_CHARSET_FOUND) |
| 1366 | { |
| 1367 | if (NILP (print_prune_charset_plist)) |
| 1368 | print_prune_charset_plist = Fcons (Qcharset, Qnil); |
| 1369 | Fremove_text_properties (make_number (0), |
| 1370 | make_number (SCHARS (string)), |
| 1371 | print_prune_charset_plist, string); |
| 1372 | } |
| 1373 | else |
| 1374 | Fset_text_properties (make_number (0), make_number (SCHARS (string)), |
| 1375 | Qnil, string); |
| 1376 | } |
| 1377 | return string; |
| 1378 | } |
| 1379 | |
| 1380 | static void |
| 1381 | print_object (Lisp_Object obj, register Lisp_Object printcharfun, int escapeflag) |
| 1382 | { |
| 1383 | char buf[40]; |
| 1384 | |
| 1385 | QUIT; |
| 1386 | |
| 1387 | /* See similar code in print_preprocess. */ |
| 1388 | if (print_depth >= PRINT_CIRCLE) |
| 1389 | error ("Apparently circular structure being printed"); |
| 1390 | |
| 1391 | /* Detect circularities and truncate them. */ |
| 1392 | if (STRINGP (obj) || CONSP (obj) || VECTORP (obj) |
| 1393 | || COMPILEDP (obj) || CHAR_TABLE_P (obj) || SUB_CHAR_TABLE_P (obj) |
| 1394 | || HASH_TABLE_P (obj) |
| 1395 | || (! NILP (Vprint_gensym) |
| 1396 | && SYMBOLP (obj) |
| 1397 | && !SYMBOL_INTERNED_P (obj))) |
| 1398 | { |
| 1399 | if (NILP (Vprint_circle) && NILP (Vprint_gensym)) |
| 1400 | { |
| 1401 | /* Simple but incomplete way. */ |
| 1402 | int i; |
| 1403 | for (i = 0; i < print_depth; i++) |
| 1404 | if (EQ (obj, being_printed[i])) |
| 1405 | { |
| 1406 | sprintf (buf, "#%d", i); |
| 1407 | strout (buf, -1, -1, printcharfun, 0); |
| 1408 | return; |
| 1409 | } |
| 1410 | being_printed[print_depth] = obj; |
| 1411 | } |
| 1412 | else |
| 1413 | { |
| 1414 | /* With the print-circle feature. */ |
| 1415 | Lisp_Object num = Fgethash (obj, Vprint_number_table, Qnil); |
| 1416 | if (INTEGERP (num)) |
| 1417 | { |
| 1418 | int n = XINT (num); |
| 1419 | if (n < 0) |
| 1420 | { /* Add a prefix #n= if OBJ has not yet been printed; |
| 1421 | that is, its status field is nil. */ |
| 1422 | sprintf (buf, "#%d=", -n); |
| 1423 | strout (buf, -1, -1, printcharfun, 0); |
| 1424 | /* OBJ is going to be printed. Remember that fact. */ |
| 1425 | Fputhash (obj, make_number (- n), Vprint_number_table); |
| 1426 | } |
| 1427 | else |
| 1428 | { |
| 1429 | /* Just print #n# if OBJ has already been printed. */ |
| 1430 | sprintf (buf, "#%d#", n); |
| 1431 | strout (buf, -1, -1, printcharfun, 0); |
| 1432 | return; |
| 1433 | } |
| 1434 | } |
| 1435 | } |
| 1436 | } |
| 1437 | |
| 1438 | print_depth++; |
| 1439 | |
| 1440 | switch (XTYPE (obj)) |
| 1441 | { |
| 1442 | case_Lisp_Int: |
| 1443 | if (sizeof (int) == sizeof (EMACS_INT)) |
| 1444 | sprintf (buf, "%d", (int) XINT (obj)); |
| 1445 | else if (sizeof (long) == sizeof (EMACS_INT)) |
| 1446 | sprintf (buf, "%ld", (long) XINT (obj)); |
| 1447 | else |
| 1448 | abort (); |
| 1449 | strout (buf, -1, -1, printcharfun, 0); |
| 1450 | break; |
| 1451 | |
| 1452 | case Lisp_Float: |
| 1453 | { |
| 1454 | char pigbuf[FLOAT_TO_STRING_BUFSIZE]; |
| 1455 | |
| 1456 | float_to_string (pigbuf, XFLOAT_DATA (obj)); |
| 1457 | strout (pigbuf, -1, -1, printcharfun, 0); |
| 1458 | } |
| 1459 | break; |
| 1460 | |
| 1461 | case Lisp_String: |
| 1462 | if (!escapeflag) |
| 1463 | print_string (obj, printcharfun); |
| 1464 | else |
| 1465 | { |
| 1466 | register EMACS_INT i, i_byte; |
| 1467 | struct gcpro gcpro1; |
| 1468 | unsigned char *str; |
| 1469 | EMACS_INT size_byte; |
| 1470 | /* 1 means we must ensure that the next character we output |
| 1471 | cannot be taken as part of a hex character escape. */ |
| 1472 | int need_nonhex = 0; |
| 1473 | int multibyte = STRING_MULTIBYTE (obj); |
| 1474 | |
| 1475 | GCPRO1 (obj); |
| 1476 | |
| 1477 | if (! EQ (Vprint_charset_text_property, Qt)) |
| 1478 | obj = print_prune_string_charset (obj); |
| 1479 | |
| 1480 | if (!NULL_INTERVAL_P (STRING_INTERVALS (obj))) |
| 1481 | { |
| 1482 | PRINTCHAR ('#'); |
| 1483 | PRINTCHAR ('('); |
| 1484 | } |
| 1485 | |
| 1486 | PRINTCHAR ('\"'); |
| 1487 | str = SDATA (obj); |
| 1488 | size_byte = SBYTES (obj); |
| 1489 | |
| 1490 | for (i = 0, i_byte = 0; i_byte < size_byte;) |
| 1491 | { |
| 1492 | /* Here, we must convert each multi-byte form to the |
| 1493 | corresponding character code before handing it to PRINTCHAR. */ |
| 1494 | int len; |
| 1495 | int c; |
| 1496 | |
| 1497 | if (multibyte) |
| 1498 | { |
| 1499 | c = STRING_CHAR_AND_LENGTH (str + i_byte, len); |
| 1500 | i_byte += len; |
| 1501 | } |
| 1502 | else |
| 1503 | c = str[i_byte++]; |
| 1504 | |
| 1505 | QUIT; |
| 1506 | |
| 1507 | if (c == '\n' && print_escape_newlines) |
| 1508 | { |
| 1509 | PRINTCHAR ('\\'); |
| 1510 | PRINTCHAR ('n'); |
| 1511 | } |
| 1512 | else if (c == '\f' && print_escape_newlines) |
| 1513 | { |
| 1514 | PRINTCHAR ('\\'); |
| 1515 | PRINTCHAR ('f'); |
| 1516 | } |
| 1517 | else if (multibyte |
| 1518 | && (CHAR_BYTE8_P (c) |
| 1519 | || (! ASCII_CHAR_P (c) && print_escape_multibyte))) |
| 1520 | { |
| 1521 | /* When multibyte is disabled, |
| 1522 | print multibyte string chars using hex escapes. |
| 1523 | For a char code that could be in a unibyte string, |
| 1524 | when found in a multibyte string, always use a hex escape |
| 1525 | so it reads back as multibyte. */ |
| 1526 | char outbuf[50]; |
| 1527 | |
| 1528 | if (CHAR_BYTE8_P (c)) |
| 1529 | sprintf (outbuf, "\\%03o", CHAR_TO_BYTE8 (c)); |
| 1530 | else |
| 1531 | { |
| 1532 | sprintf (outbuf, "\\x%04x", c); |
| 1533 | need_nonhex = 1; |
| 1534 | } |
| 1535 | strout (outbuf, -1, -1, printcharfun, 0); |
| 1536 | } |
| 1537 | else if (! multibyte |
| 1538 | && SINGLE_BYTE_CHAR_P (c) && ! ASCII_BYTE_P (c) |
| 1539 | && print_escape_nonascii) |
| 1540 | { |
| 1541 | /* When printing in a multibyte buffer |
| 1542 | or when explicitly requested, |
| 1543 | print single-byte non-ASCII string chars |
| 1544 | using octal escapes. */ |
| 1545 | char outbuf[5]; |
| 1546 | sprintf (outbuf, "\\%03o", c); |
| 1547 | strout (outbuf, -1, -1, printcharfun, 0); |
| 1548 | } |
| 1549 | else |
| 1550 | { |
| 1551 | /* If we just had a hex escape, and this character |
| 1552 | could be taken as part of it, |
| 1553 | output `\ ' to prevent that. */ |
| 1554 | if (need_nonhex) |
| 1555 | { |
| 1556 | need_nonhex = 0; |
| 1557 | if ((c >= 'a' && c <= 'f') |
| 1558 | || (c >= 'A' && c <= 'F') |
| 1559 | || (c >= '0' && c <= '9')) |
| 1560 | strout ("\\ ", -1, -1, printcharfun, 0); |
| 1561 | } |
| 1562 | |
| 1563 | if (c == '\"' || c == '\\') |
| 1564 | PRINTCHAR ('\\'); |
| 1565 | PRINTCHAR (c); |
| 1566 | } |
| 1567 | } |
| 1568 | PRINTCHAR ('\"'); |
| 1569 | |
| 1570 | if (!NULL_INTERVAL_P (STRING_INTERVALS (obj))) |
| 1571 | { |
| 1572 | traverse_intervals (STRING_INTERVALS (obj), |
| 1573 | 0, print_interval, printcharfun); |
| 1574 | PRINTCHAR (')'); |
| 1575 | } |
| 1576 | |
| 1577 | UNGCPRO; |
| 1578 | } |
| 1579 | break; |
| 1580 | |
| 1581 | case Lisp_Symbol: |
| 1582 | { |
| 1583 | register int confusing; |
| 1584 | register unsigned char *p = SDATA (SYMBOL_NAME (obj)); |
| 1585 | register unsigned char *end = p + SBYTES (SYMBOL_NAME (obj)); |
| 1586 | register int c; |
| 1587 | int i, i_byte; |
| 1588 | EMACS_INT size_byte; |
| 1589 | Lisp_Object name; |
| 1590 | |
| 1591 | name = SYMBOL_NAME (obj); |
| 1592 | |
| 1593 | if (p != end && (*p == '-' || *p == '+')) p++; |
| 1594 | if (p == end) |
| 1595 | confusing = 0; |
| 1596 | /* If symbol name begins with a digit, and ends with a digit, |
| 1597 | and contains nothing but digits and `e', it could be treated |
| 1598 | as a number. So set CONFUSING. |
| 1599 | |
| 1600 | Symbols that contain periods could also be taken as numbers, |
| 1601 | but periods are always escaped, so we don't have to worry |
| 1602 | about them here. */ |
| 1603 | else if (*p >= '0' && *p <= '9' |
| 1604 | && end[-1] >= '0' && end[-1] <= '9') |
| 1605 | { |
| 1606 | while (p != end && ((*p >= '0' && *p <= '9') |
| 1607 | /* Needed for \2e10. */ |
| 1608 | || *p == 'e' || *p == 'E')) |
| 1609 | p++; |
| 1610 | confusing = (end == p); |
| 1611 | } |
| 1612 | else |
| 1613 | confusing = 0; |
| 1614 | |
| 1615 | if (! NILP (Vprint_gensym) && !SYMBOL_INTERNED_P (obj)) |
| 1616 | { |
| 1617 | PRINTCHAR ('#'); |
| 1618 | PRINTCHAR (':'); |
| 1619 | } |
| 1620 | |
| 1621 | size_byte = SBYTES (name); |
| 1622 | |
| 1623 | for (i = 0, i_byte = 0; i_byte < size_byte;) |
| 1624 | { |
| 1625 | /* Here, we must convert each multi-byte form to the |
| 1626 | corresponding character code before handing it to PRINTCHAR. */ |
| 1627 | FETCH_STRING_CHAR_ADVANCE (c, name, i, i_byte); |
| 1628 | QUIT; |
| 1629 | |
| 1630 | if (escapeflag) |
| 1631 | { |
| 1632 | if (c == '\"' || c == '\\' || c == '\'' |
| 1633 | || c == ';' || c == '#' || c == '(' || c == ')' |
| 1634 | || c == ',' || c =='.' || c == '`' |
| 1635 | || c == '[' || c == ']' || c == '?' || c <= 040 |
| 1636 | || confusing) |
| 1637 | PRINTCHAR ('\\'), confusing = 0; |
| 1638 | } |
| 1639 | PRINTCHAR (c); |
| 1640 | } |
| 1641 | } |
| 1642 | break; |
| 1643 | |
| 1644 | case Lisp_Cons: |
| 1645 | /* If deeper than spec'd depth, print placeholder. */ |
| 1646 | if (INTEGERP (Vprint_level) |
| 1647 | && print_depth > XINT (Vprint_level)) |
| 1648 | strout ("...", -1, -1, printcharfun, 0); |
| 1649 | else if (print_quoted && CONSP (XCDR (obj)) && NILP (XCDR (XCDR (obj))) |
| 1650 | && (EQ (XCAR (obj), Qquote))) |
| 1651 | { |
| 1652 | PRINTCHAR ('\''); |
| 1653 | print_object (XCAR (XCDR (obj)), printcharfun, escapeflag); |
| 1654 | } |
| 1655 | else if (print_quoted && CONSP (XCDR (obj)) && NILP (XCDR (XCDR (obj))) |
| 1656 | && (EQ (XCAR (obj), Qfunction))) |
| 1657 | { |
| 1658 | PRINTCHAR ('#'); |
| 1659 | PRINTCHAR ('\''); |
| 1660 | print_object (XCAR (XCDR (obj)), printcharfun, escapeflag); |
| 1661 | } |
| 1662 | else if (print_quoted && CONSP (XCDR (obj)) && NILP (XCDR (XCDR (obj))) |
| 1663 | && ((EQ (XCAR (obj), Qbackquote)))) |
| 1664 | { |
| 1665 | print_object (XCAR (obj), printcharfun, 0); |
| 1666 | new_backquote_output++; |
| 1667 | print_object (XCAR (XCDR (obj)), printcharfun, escapeflag); |
| 1668 | new_backquote_output--; |
| 1669 | } |
| 1670 | else if (print_quoted && CONSP (XCDR (obj)) && NILP (XCDR (XCDR (obj))) |
| 1671 | && new_backquote_output |
| 1672 | && ((EQ (XCAR (obj), Qbackquote) |
| 1673 | || EQ (XCAR (obj), Qcomma) |
| 1674 | || EQ (XCAR (obj), Qcomma_at) |
| 1675 | || EQ (XCAR (obj), Qcomma_dot)))) |
| 1676 | { |
| 1677 | print_object (XCAR (obj), printcharfun, 0); |
| 1678 | new_backquote_output--; |
| 1679 | print_object (XCAR (XCDR (obj)), printcharfun, escapeflag); |
| 1680 | new_backquote_output++; |
| 1681 | } |
| 1682 | else |
| 1683 | { |
| 1684 | PRINTCHAR ('('); |
| 1685 | |
| 1686 | /* If the first element is a backquote form, |
| 1687 | print it old-style so it won't be misunderstood. */ |
| 1688 | if (print_quoted && CONSP (XCAR (obj)) |
| 1689 | && CONSP (XCDR (XCAR (obj))) |
| 1690 | && NILP (XCDR (XCDR (XCAR (obj)))) |
| 1691 | && EQ (XCAR (XCAR (obj)), Qbackquote)) |
| 1692 | { |
| 1693 | Lisp_Object tem; |
| 1694 | tem = XCAR (obj); |
| 1695 | PRINTCHAR ('('); |
| 1696 | |
| 1697 | print_object (Qbackquote, printcharfun, 0); |
| 1698 | PRINTCHAR (' '); |
| 1699 | |
| 1700 | print_object (XCAR (XCDR (tem)), printcharfun, 0); |
| 1701 | PRINTCHAR (')'); |
| 1702 | |
| 1703 | obj = XCDR (obj); |
| 1704 | } |
| 1705 | |
| 1706 | { |
| 1707 | EMACS_INT print_length; |
| 1708 | int i; |
| 1709 | Lisp_Object halftail = obj; |
| 1710 | |
| 1711 | /* Negative values of print-length are invalid in CL. |
| 1712 | Treat them like nil, as CMUCL does. */ |
| 1713 | if (NATNUMP (Vprint_length)) |
| 1714 | print_length = XFASTINT (Vprint_length); |
| 1715 | else |
| 1716 | print_length = 0; |
| 1717 | |
| 1718 | i = 0; |
| 1719 | while (CONSP (obj)) |
| 1720 | { |
| 1721 | /* Detect circular list. */ |
| 1722 | if (NILP (Vprint_circle)) |
| 1723 | { |
| 1724 | /* Simple but imcomplete way. */ |
| 1725 | if (i != 0 && EQ (obj, halftail)) |
| 1726 | { |
| 1727 | sprintf (buf, " . #%d", i / 2); |
| 1728 | strout (buf, -1, -1, printcharfun, 0); |
| 1729 | goto end_of_list; |
| 1730 | } |
| 1731 | } |
| 1732 | else |
| 1733 | { |
| 1734 | /* With the print-circle feature. */ |
| 1735 | if (i != 0) |
| 1736 | { |
| 1737 | Lisp_Object num = Fgethash (obj, Vprint_number_table, Qnil); |
| 1738 | if (INTEGERP (num)) |
| 1739 | { |
| 1740 | strout (" . ", 3, 3, printcharfun, 0); |
| 1741 | print_object (obj, printcharfun, escapeflag); |
| 1742 | goto end_of_list; |
| 1743 | } |
| 1744 | } |
| 1745 | } |
| 1746 | |
| 1747 | if (i++) |
| 1748 | PRINTCHAR (' '); |
| 1749 | |
| 1750 | if (print_length && i > print_length) |
| 1751 | { |
| 1752 | strout ("...", 3, 3, printcharfun, 0); |
| 1753 | goto end_of_list; |
| 1754 | } |
| 1755 | |
| 1756 | print_object (XCAR (obj), printcharfun, escapeflag); |
| 1757 | |
| 1758 | obj = XCDR (obj); |
| 1759 | if (!(i & 1)) |
| 1760 | halftail = XCDR (halftail); |
| 1761 | } |
| 1762 | } |
| 1763 | |
| 1764 | /* OBJ non-nil here means it's the end of a dotted list. */ |
| 1765 | if (!NILP (obj)) |
| 1766 | { |
| 1767 | strout (" . ", 3, 3, printcharfun, 0); |
| 1768 | print_object (obj, printcharfun, escapeflag); |
| 1769 | } |
| 1770 | |
| 1771 | end_of_list: |
| 1772 | PRINTCHAR (')'); |
| 1773 | } |
| 1774 | break; |
| 1775 | |
| 1776 | case Lisp_Vectorlike: |
| 1777 | if (PROCESSP (obj)) |
| 1778 | { |
| 1779 | if (escapeflag) |
| 1780 | { |
| 1781 | strout ("#<process ", -1, -1, printcharfun, 0); |
| 1782 | print_string (XPROCESS (obj)->name, printcharfun); |
| 1783 | PRINTCHAR ('>'); |
| 1784 | } |
| 1785 | else |
| 1786 | print_string (XPROCESS (obj)->name, printcharfun); |
| 1787 | } |
| 1788 | else if (BOOL_VECTOR_P (obj)) |
| 1789 | { |
| 1790 | register int i; |
| 1791 | register unsigned char c; |
| 1792 | struct gcpro gcpro1; |
| 1793 | EMACS_INT size_in_chars |
| 1794 | = ((XBOOL_VECTOR (obj)->size + BOOL_VECTOR_BITS_PER_CHAR - 1) |
| 1795 | / BOOL_VECTOR_BITS_PER_CHAR); |
| 1796 | |
| 1797 | GCPRO1 (obj); |
| 1798 | |
| 1799 | PRINTCHAR ('#'); |
| 1800 | PRINTCHAR ('&'); |
| 1801 | sprintf (buf, "%ld", (long) XBOOL_VECTOR (obj)->size); |
| 1802 | strout (buf, -1, -1, printcharfun, 0); |
| 1803 | PRINTCHAR ('\"'); |
| 1804 | |
| 1805 | /* Don't print more characters than the specified maximum. |
| 1806 | Negative values of print-length are invalid. Treat them |
| 1807 | like a print-length of nil. */ |
| 1808 | if (NATNUMP (Vprint_length) |
| 1809 | && XFASTINT (Vprint_length) < size_in_chars) |
| 1810 | size_in_chars = XFASTINT (Vprint_length); |
| 1811 | |
| 1812 | for (i = 0; i < size_in_chars; i++) |
| 1813 | { |
| 1814 | QUIT; |
| 1815 | c = XBOOL_VECTOR (obj)->data[i]; |
| 1816 | if (c == '\n' && print_escape_newlines) |
| 1817 | { |
| 1818 | PRINTCHAR ('\\'); |
| 1819 | PRINTCHAR ('n'); |
| 1820 | } |
| 1821 | else if (c == '\f' && print_escape_newlines) |
| 1822 | { |
| 1823 | PRINTCHAR ('\\'); |
| 1824 | PRINTCHAR ('f'); |
| 1825 | } |
| 1826 | else if (c > '\177') |
| 1827 | { |
| 1828 | /* Use octal escapes to avoid encoding issues. */ |
| 1829 | PRINTCHAR ('\\'); |
| 1830 | PRINTCHAR ('0' + ((c >> 6) & 3)); |
| 1831 | PRINTCHAR ('0' + ((c >> 3) & 7)); |
| 1832 | PRINTCHAR ('0' + (c & 7)); |
| 1833 | } |
| 1834 | else |
| 1835 | { |
| 1836 | if (c == '\"' || c == '\\') |
| 1837 | PRINTCHAR ('\\'); |
| 1838 | PRINTCHAR (c); |
| 1839 | } |
| 1840 | } |
| 1841 | PRINTCHAR ('\"'); |
| 1842 | |
| 1843 | UNGCPRO; |
| 1844 | } |
| 1845 | else if (SUBRP (obj)) |
| 1846 | { |
| 1847 | strout ("#<subr ", -1, -1, printcharfun, 0); |
| 1848 | strout (XSUBR (obj)->symbol_name, -1, -1, printcharfun, 0); |
| 1849 | PRINTCHAR ('>'); |
| 1850 | } |
| 1851 | else if (WINDOWP (obj)) |
| 1852 | { |
| 1853 | strout ("#<window ", -1, -1, printcharfun, 0); |
| 1854 | sprintf (buf, "%ld", (long) XFASTINT (XWINDOW (obj)->sequence_number)); |
| 1855 | strout (buf, -1, -1, printcharfun, 0); |
| 1856 | if (!NILP (XWINDOW (obj)->buffer)) |
| 1857 | { |
| 1858 | strout (" on ", -1, -1, printcharfun, 0); |
| 1859 | print_string (B_ (XBUFFER (XWINDOW (obj)->buffer), name), printcharfun); |
| 1860 | } |
| 1861 | PRINTCHAR ('>'); |
| 1862 | } |
| 1863 | else if (TERMINALP (obj)) |
| 1864 | { |
| 1865 | struct terminal *t = XTERMINAL (obj); |
| 1866 | strout ("#<terminal ", -1, -1, printcharfun, 0); |
| 1867 | sprintf (buf, "%d", t->id); |
| 1868 | strout (buf, -1, -1, printcharfun, 0); |
| 1869 | if (t->name) |
| 1870 | { |
| 1871 | strout (" on ", -1, -1, printcharfun, 0); |
| 1872 | strout (t->name, -1, -1, printcharfun, 0); |
| 1873 | } |
| 1874 | PRINTCHAR ('>'); |
| 1875 | } |
| 1876 | else if (HASH_TABLE_P (obj)) |
| 1877 | { |
| 1878 | struct Lisp_Hash_Table *h = XHASH_TABLE (obj); |
| 1879 | int i; |
| 1880 | EMACS_INT real_size, size; |
| 1881 | #if 0 |
| 1882 | strout ("#<hash-table", -1, -1, printcharfun, 0); |
| 1883 | if (SYMBOLP (h->test)) |
| 1884 | { |
| 1885 | PRINTCHAR (' '); |
| 1886 | PRINTCHAR ('\''); |
| 1887 | strout (SDATA (SYMBOL_NAME (h->test)), -1, -1, printcharfun, 0); |
| 1888 | PRINTCHAR (' '); |
| 1889 | strout (SDATA (SYMBOL_NAME (h->weak)), -1, -1, printcharfun, 0); |
| 1890 | PRINTCHAR (' '); |
| 1891 | sprintf (buf, "%ld/%ld", (long) h->count, |
| 1892 | (long) XVECTOR (h->next)->size); |
| 1893 | strout (buf, -1, -1, printcharfun, 0); |
| 1894 | } |
| 1895 | sprintf (buf, " 0x%lx", (unsigned long) h); |
| 1896 | strout (buf, -1, -1, printcharfun, 0); |
| 1897 | PRINTCHAR ('>'); |
| 1898 | #endif |
| 1899 | /* Implement a readable output, e.g.: |
| 1900 | #s(hash-table size 2 test equal data (k1 v1 k2 v2)) */ |
| 1901 | /* Always print the size. */ |
| 1902 | sprintf (buf, "#s(hash-table size %ld", |
| 1903 | (long) XVECTOR (h->next)->size); |
| 1904 | strout (buf, -1, -1, printcharfun, 0); |
| 1905 | |
| 1906 | if (!NILP (h->test)) |
| 1907 | { |
| 1908 | strout (" test ", -1, -1, printcharfun, 0); |
| 1909 | print_object (h->test, printcharfun, 0); |
| 1910 | } |
| 1911 | |
| 1912 | if (!NILP (h->weak)) |
| 1913 | { |
| 1914 | strout (" weakness ", -1, -1, printcharfun, 0); |
| 1915 | print_object (h->weak, printcharfun, 0); |
| 1916 | } |
| 1917 | |
| 1918 | if (!NILP (h->rehash_size)) |
| 1919 | { |
| 1920 | strout (" rehash-size ", -1, -1, printcharfun, 0); |
| 1921 | print_object (h->rehash_size, printcharfun, 0); |
| 1922 | } |
| 1923 | |
| 1924 | if (!NILP (h->rehash_threshold)) |
| 1925 | { |
| 1926 | strout (" rehash-threshold ", -1, -1, printcharfun, 0); |
| 1927 | print_object (h->rehash_threshold, printcharfun, 0); |
| 1928 | } |
| 1929 | |
| 1930 | strout (" data ", -1, -1, printcharfun, 0); |
| 1931 | |
| 1932 | /* Print the data here as a plist. */ |
| 1933 | real_size = HASH_TABLE_SIZE (h); |
| 1934 | size = real_size; |
| 1935 | |
| 1936 | /* Don't print more elements than the specified maximum. */ |
| 1937 | if (NATNUMP (Vprint_length) |
| 1938 | && XFASTINT (Vprint_length) < size) |
| 1939 | size = XFASTINT (Vprint_length); |
| 1940 | |
| 1941 | PRINTCHAR ('('); |
| 1942 | for (i = 0; i < size; i++) |
| 1943 | if (!NILP (HASH_HASH (h, i))) |
| 1944 | { |
| 1945 | if (i) PRINTCHAR (' '); |
| 1946 | print_object (HASH_KEY (h, i), printcharfun, 1); |
| 1947 | PRINTCHAR (' '); |
| 1948 | print_object (HASH_VALUE (h, i), printcharfun, 1); |
| 1949 | } |
| 1950 | |
| 1951 | if (size < real_size) |
| 1952 | strout (" ...", 4, 4, printcharfun, 0); |
| 1953 | |
| 1954 | PRINTCHAR (')'); |
| 1955 | PRINTCHAR (')'); |
| 1956 | |
| 1957 | } |
| 1958 | else if (BUFFERP (obj)) |
| 1959 | { |
| 1960 | if (NILP (B_ (XBUFFER (obj), name))) |
| 1961 | strout ("#<killed buffer>", -1, -1, printcharfun, 0); |
| 1962 | else if (escapeflag) |
| 1963 | { |
| 1964 | strout ("#<buffer ", -1, -1, printcharfun, 0); |
| 1965 | print_string (B_ (XBUFFER (obj), name), printcharfun); |
| 1966 | PRINTCHAR ('>'); |
| 1967 | } |
| 1968 | else |
| 1969 | print_string (B_ (XBUFFER (obj), name), printcharfun); |
| 1970 | } |
| 1971 | else if (WINDOW_CONFIGURATIONP (obj)) |
| 1972 | { |
| 1973 | strout ("#<window-configuration>", -1, -1, printcharfun, 0); |
| 1974 | } |
| 1975 | else if (FRAMEP (obj)) |
| 1976 | { |
| 1977 | strout ((FRAME_LIVE_P (XFRAME (obj)) |
| 1978 | ? "#<frame " : "#<dead frame "), |
| 1979 | -1, -1, printcharfun, 0); |
| 1980 | print_string (XFRAME (obj)->name, printcharfun); |
| 1981 | sprintf (buf, " 0x%lx", (unsigned long) (XFRAME (obj))); |
| 1982 | strout (buf, -1, -1, printcharfun, 0); |
| 1983 | PRINTCHAR ('>'); |
| 1984 | } |
| 1985 | else if (FONTP (obj)) |
| 1986 | { |
| 1987 | EMACS_INT i; |
| 1988 | |
| 1989 | if (! FONT_OBJECT_P (obj)) |
| 1990 | { |
| 1991 | if (FONT_SPEC_P (obj)) |
| 1992 | strout ("#<font-spec", -1, -1, printcharfun, 0); |
| 1993 | else |
| 1994 | strout ("#<font-entity", -1, -1, printcharfun, 0); |
| 1995 | for (i = 0; i < FONT_SPEC_MAX; i++) |
| 1996 | { |
| 1997 | PRINTCHAR (' '); |
| 1998 | if (i < FONT_WEIGHT_INDEX || i > FONT_WIDTH_INDEX) |
| 1999 | print_object (AREF (obj, i), printcharfun, escapeflag); |
| 2000 | else |
| 2001 | print_object (font_style_symbolic (obj, i, 0), |
| 2002 | printcharfun, escapeflag); |
| 2003 | } |
| 2004 | } |
| 2005 | else |
| 2006 | { |
| 2007 | strout ("#<font-object ", -1, -1, printcharfun, 0); |
| 2008 | print_object (AREF (obj, FONT_NAME_INDEX), printcharfun, |
| 2009 | escapeflag); |
| 2010 | } |
| 2011 | PRINTCHAR ('>'); |
| 2012 | } |
| 2013 | else |
| 2014 | { |
| 2015 | EMACS_INT size = XVECTOR (obj)->size; |
| 2016 | if (COMPILEDP (obj)) |
| 2017 | { |
| 2018 | PRINTCHAR ('#'); |
| 2019 | size &= PSEUDOVECTOR_SIZE_MASK; |
| 2020 | } |
| 2021 | if (CHAR_TABLE_P (obj) || SUB_CHAR_TABLE_P (obj)) |
| 2022 | { |
| 2023 | /* We print a char-table as if it were a vector, |
| 2024 | lumping the parent and default slots in with the |
| 2025 | character slots. But we add #^ as a prefix. */ |
| 2026 | |
| 2027 | /* Make each lowest sub_char_table start a new line. |
| 2028 | Otherwise we'll make a line extremely long, which |
| 2029 | results in slow redisplay. */ |
| 2030 | if (SUB_CHAR_TABLE_P (obj) |
| 2031 | && XINT (XSUB_CHAR_TABLE (obj)->depth) == 3) |
| 2032 | PRINTCHAR ('\n'); |
| 2033 | PRINTCHAR ('#'); |
| 2034 | PRINTCHAR ('^'); |
| 2035 | if (SUB_CHAR_TABLE_P (obj)) |
| 2036 | PRINTCHAR ('^'); |
| 2037 | size &= PSEUDOVECTOR_SIZE_MASK; |
| 2038 | } |
| 2039 | if (size & PSEUDOVECTOR_FLAG) |
| 2040 | goto badtype; |
| 2041 | |
| 2042 | PRINTCHAR ('['); |
| 2043 | { |
| 2044 | register int i; |
| 2045 | register Lisp_Object tem; |
| 2046 | EMACS_INT real_size = size; |
| 2047 | |
| 2048 | /* Don't print more elements than the specified maximum. */ |
| 2049 | if (NATNUMP (Vprint_length) |
| 2050 | && XFASTINT (Vprint_length) < size) |
| 2051 | size = XFASTINT (Vprint_length); |
| 2052 | |
| 2053 | for (i = 0; i < size; i++) |
| 2054 | { |
| 2055 | if (i) PRINTCHAR (' '); |
| 2056 | tem = XVECTOR (obj)->contents[i]; |
| 2057 | print_object (tem, printcharfun, escapeflag); |
| 2058 | } |
| 2059 | if (size < real_size) |
| 2060 | strout (" ...", 4, 4, printcharfun, 0); |
| 2061 | } |
| 2062 | PRINTCHAR (']'); |
| 2063 | } |
| 2064 | break; |
| 2065 | |
| 2066 | case Lisp_Misc: |
| 2067 | switch (XMISCTYPE (obj)) |
| 2068 | { |
| 2069 | case Lisp_Misc_Marker: |
| 2070 | strout ("#<marker ", -1, -1, printcharfun, 0); |
| 2071 | /* Do you think this is necessary? */ |
| 2072 | if (XMARKER (obj)->insertion_type != 0) |
| 2073 | strout ("(moves after insertion) ", -1, -1, printcharfun, 0); |
| 2074 | if (! XMARKER (obj)->buffer) |
| 2075 | strout ("in no buffer", -1, -1, printcharfun, 0); |
| 2076 | else |
| 2077 | { |
| 2078 | sprintf (buf, "at %ld", (long)marker_position (obj)); |
| 2079 | strout (buf, -1, -1, printcharfun, 0); |
| 2080 | strout (" in ", -1, -1, printcharfun, 0); |
| 2081 | print_string (B_ (XMARKER (obj)->buffer, name), printcharfun); |
| 2082 | } |
| 2083 | PRINTCHAR ('>'); |
| 2084 | break; |
| 2085 | |
| 2086 | case Lisp_Misc_Overlay: |
| 2087 | strout ("#<overlay ", -1, -1, printcharfun, 0); |
| 2088 | if (! XMARKER (OVERLAY_START (obj))->buffer) |
| 2089 | strout ("in no buffer", -1, -1, printcharfun, 0); |
| 2090 | else |
| 2091 | { |
| 2092 | sprintf (buf, "from %ld to %ld in ", |
| 2093 | (long)marker_position (OVERLAY_START (obj)), |
| 2094 | (long)marker_position (OVERLAY_END (obj))); |
| 2095 | strout (buf, -1, -1, printcharfun, 0); |
| 2096 | print_string (B_ (XMARKER (OVERLAY_START (obj))->buffer, name), |
| 2097 | printcharfun); |
| 2098 | } |
| 2099 | PRINTCHAR ('>'); |
| 2100 | break; |
| 2101 | |
| 2102 | /* Remaining cases shouldn't happen in normal usage, but let's print |
| 2103 | them anyway for the benefit of the debugger. */ |
| 2104 | case Lisp_Misc_Free: |
| 2105 | strout ("#<misc free cell>", -1, -1, printcharfun, 0); |
| 2106 | break; |
| 2107 | |
| 2108 | case Lisp_Misc_Save_Value: |
| 2109 | strout ("#<save_value ", -1, -1, printcharfun, 0); |
| 2110 | sprintf(buf, "ptr=0x%08lx int=%d", |
| 2111 | (unsigned long) XSAVE_VALUE (obj)->pointer, |
| 2112 | XSAVE_VALUE (obj)->integer); |
| 2113 | strout (buf, -1, -1, printcharfun, 0); |
| 2114 | PRINTCHAR ('>'); |
| 2115 | break; |
| 2116 | |
| 2117 | default: |
| 2118 | goto badtype; |
| 2119 | } |
| 2120 | break; |
| 2121 | |
| 2122 | default: |
| 2123 | badtype: |
| 2124 | { |
| 2125 | /* We're in trouble if this happens! |
| 2126 | Probably should just abort () */ |
| 2127 | strout ("#<EMACS BUG: INVALID DATATYPE ", -1, -1, printcharfun, 0); |
| 2128 | if (MISCP (obj)) |
| 2129 | sprintf (buf, "(MISC 0x%04x)", (int) XMISCTYPE (obj)); |
| 2130 | else if (VECTORLIKEP (obj)) |
| 2131 | sprintf (buf, "(PVEC 0x%08x)", (int) XVECTOR (obj)->size); |
| 2132 | else |
| 2133 | sprintf (buf, "(0x%02x)", (int) XTYPE (obj)); |
| 2134 | strout (buf, -1, -1, printcharfun, 0); |
| 2135 | strout (" Save your buffers immediately and please report this bug>", |
| 2136 | -1, -1, printcharfun, 0); |
| 2137 | } |
| 2138 | } |
| 2139 | |
| 2140 | print_depth--; |
| 2141 | } |
| 2142 | \f |
| 2143 | |
| 2144 | /* Print a description of INTERVAL using PRINTCHARFUN. |
| 2145 | This is part of printing a string that has text properties. */ |
| 2146 | |
| 2147 | void |
| 2148 | print_interval (INTERVAL interval, Lisp_Object printcharfun) |
| 2149 | { |
| 2150 | if (NILP (interval->plist)) |
| 2151 | return; |
| 2152 | PRINTCHAR (' '); |
| 2153 | print_object (make_number (interval->position), printcharfun, 1); |
| 2154 | PRINTCHAR (' '); |
| 2155 | print_object (make_number (interval->position + LENGTH (interval)), |
| 2156 | printcharfun, 1); |
| 2157 | PRINTCHAR (' '); |
| 2158 | print_object (interval->plist, printcharfun, 1); |
| 2159 | } |
| 2160 | |
| 2161 | \f |
| 2162 | void |
| 2163 | syms_of_print (void) |
| 2164 | { |
| 2165 | Qtemp_buffer_setup_hook = intern_c_string ("temp-buffer-setup-hook"); |
| 2166 | staticpro (&Qtemp_buffer_setup_hook); |
| 2167 | |
| 2168 | DEFVAR_LISP ("standard-output", Vstandard_output, |
| 2169 | doc: /* Output stream `print' uses by default for outputting a character. |
| 2170 | This may be any function of one argument. |
| 2171 | It may also be a buffer (output is inserted before point) |
| 2172 | or a marker (output is inserted and the marker is advanced) |
| 2173 | or the symbol t (output appears in the echo area). */); |
| 2174 | Vstandard_output = Qt; |
| 2175 | Qstandard_output = intern_c_string ("standard-output"); |
| 2176 | staticpro (&Qstandard_output); |
| 2177 | |
| 2178 | DEFVAR_LISP ("float-output-format", Vfloat_output_format, |
| 2179 | doc: /* The format descriptor string used to print floats. |
| 2180 | This is a %-spec like those accepted by `printf' in C, |
| 2181 | but with some restrictions. It must start with the two characters `%.'. |
| 2182 | After that comes an integer precision specification, |
| 2183 | and then a letter which controls the format. |
| 2184 | The letters allowed are `e', `f' and `g'. |
| 2185 | Use `e' for exponential notation \"DIG.DIGITSeEXPT\" |
| 2186 | Use `f' for decimal point notation \"DIGITS.DIGITS\". |
| 2187 | Use `g' to choose the shorter of those two formats for the number at hand. |
| 2188 | The precision in any of these cases is the number of digits following |
| 2189 | the decimal point. With `f', a precision of 0 means to omit the |
| 2190 | decimal point. 0 is not allowed with `e' or `g'. |
| 2191 | |
| 2192 | A value of nil means to use the shortest notation |
| 2193 | that represents the number without losing information. */); |
| 2194 | Vfloat_output_format = Qnil; |
| 2195 | Qfloat_output_format = intern_c_string ("float-output-format"); |
| 2196 | staticpro (&Qfloat_output_format); |
| 2197 | |
| 2198 | DEFVAR_LISP ("print-length", Vprint_length, |
| 2199 | doc: /* Maximum length of list to print before abbreviating. |
| 2200 | A value of nil means no limit. See also `eval-expression-print-length'. */); |
| 2201 | Vprint_length = Qnil; |
| 2202 | |
| 2203 | DEFVAR_LISP ("print-level", Vprint_level, |
| 2204 | doc: /* Maximum depth of list nesting to print before abbreviating. |
| 2205 | A value of nil means no limit. See also `eval-expression-print-level'. */); |
| 2206 | Vprint_level = Qnil; |
| 2207 | |
| 2208 | DEFVAR_BOOL ("print-escape-newlines", print_escape_newlines, |
| 2209 | doc: /* Non-nil means print newlines in strings as `\\n'. |
| 2210 | Also print formfeeds as `\\f'. */); |
| 2211 | print_escape_newlines = 0; |
| 2212 | |
| 2213 | DEFVAR_BOOL ("print-escape-nonascii", print_escape_nonascii, |
| 2214 | doc: /* Non-nil means print unibyte non-ASCII chars in strings as \\OOO. |
| 2215 | \(OOO is the octal representation of the character code.) |
| 2216 | Only single-byte characters are affected, and only in `prin1'. |
| 2217 | When the output goes in a multibyte buffer, this feature is |
| 2218 | enabled regardless of the value of the variable. */); |
| 2219 | print_escape_nonascii = 0; |
| 2220 | |
| 2221 | DEFVAR_BOOL ("print-escape-multibyte", print_escape_multibyte, |
| 2222 | doc: /* Non-nil means print multibyte characters in strings as \\xXXXX. |
| 2223 | \(XXXX is the hex representation of the character code.) |
| 2224 | This affects only `prin1'. */); |
| 2225 | print_escape_multibyte = 0; |
| 2226 | |
| 2227 | DEFVAR_BOOL ("print-quoted", print_quoted, |
| 2228 | doc: /* Non-nil means print quoted forms with reader syntax. |
| 2229 | I.e., (quote foo) prints as 'foo, (function foo) as #'foo. */); |
| 2230 | print_quoted = 0; |
| 2231 | |
| 2232 | DEFVAR_LISP ("print-gensym", Vprint_gensym, |
| 2233 | doc: /* Non-nil means print uninterned symbols so they will read as uninterned. |
| 2234 | I.e., the value of (make-symbol \"foobar\") prints as #:foobar. |
| 2235 | When the uninterned symbol appears within a recursive data structure, |
| 2236 | and the symbol appears more than once, in addition use the #N# and #N= |
| 2237 | constructs as needed, so that multiple references to the same symbol are |
| 2238 | shared once again when the text is read back. */); |
| 2239 | Vprint_gensym = Qnil; |
| 2240 | |
| 2241 | DEFVAR_LISP ("print-circle", Vprint_circle, |
| 2242 | doc: /* *Non-nil means print recursive structures using #N= and #N# syntax. |
| 2243 | If nil, printing proceeds recursively and may lead to |
| 2244 | `max-lisp-eval-depth' being exceeded or an error may occur: |
| 2245 | \"Apparently circular structure being printed.\" Also see |
| 2246 | `print-length' and `print-level'. |
| 2247 | If non-nil, shared substructures anywhere in the structure are printed |
| 2248 | with `#N=' before the first occurrence (in the order of the print |
| 2249 | representation) and `#N#' in place of each subsequent occurrence, |
| 2250 | where N is a positive decimal integer. */); |
| 2251 | Vprint_circle = Qnil; |
| 2252 | |
| 2253 | DEFVAR_LISP ("print-continuous-numbering", Vprint_continuous_numbering, |
| 2254 | doc: /* *Non-nil means number continuously across print calls. |
| 2255 | This affects the numbers printed for #N= labels and #M# references. |
| 2256 | See also `print-circle', `print-gensym', and `print-number-table'. |
| 2257 | This variable should not be set with `setq'; bind it with a `let' instead. */); |
| 2258 | Vprint_continuous_numbering = Qnil; |
| 2259 | |
| 2260 | DEFVAR_LISP ("print-number-table", Vprint_number_table, |
| 2261 | doc: /* A vector used internally to produce `#N=' labels and `#N#' references. |
| 2262 | The Lisp printer uses this vector to detect Lisp objects referenced more |
| 2263 | than once. |
| 2264 | |
| 2265 | When you bind `print-continuous-numbering' to t, you should probably |
| 2266 | also bind `print-number-table' to nil. This ensures that the value of |
| 2267 | `print-number-table' can be garbage-collected once the printing is |
| 2268 | done. If all elements of `print-number-table' are nil, it means that |
| 2269 | the printing done so far has not found any shared structure or objects |
| 2270 | that need to be recorded in the table. */); |
| 2271 | Vprint_number_table = Qnil; |
| 2272 | |
| 2273 | DEFVAR_LISP ("print-charset-text-property", Vprint_charset_text_property, |
| 2274 | doc: /* A flag to control printing of `charset' text property on printing a string. |
| 2275 | The value must be nil, t, or `default'. |
| 2276 | |
| 2277 | If the value is nil, don't print the text property `charset'. |
| 2278 | |
| 2279 | If the value is t, always print the text property `charset'. |
| 2280 | |
| 2281 | If the value is `default', print the text property `charset' only when |
| 2282 | the value is different from what is guessed in the current charset |
| 2283 | priorities. */); |
| 2284 | Vprint_charset_text_property = Qdefault; |
| 2285 | |
| 2286 | /* prin1_to_string_buffer initialized in init_buffer_once in buffer.c */ |
| 2287 | staticpro (&Vprin1_to_string_buffer); |
| 2288 | |
| 2289 | defsubr (&Sprin1); |
| 2290 | defsubr (&Sprin1_to_string); |
| 2291 | defsubr (&Serror_message_string); |
| 2292 | defsubr (&Sprinc); |
| 2293 | defsubr (&Sprint); |
| 2294 | defsubr (&Sterpri); |
| 2295 | defsubr (&Swrite_char); |
| 2296 | defsubr (&Sexternal_debugging_output); |
| 2297 | #ifdef WITH_REDIRECT_DEBUGGING_OUTPUT |
| 2298 | defsubr (&Sredirect_debugging_output); |
| 2299 | #endif |
| 2300 | |
| 2301 | Qexternal_debugging_output = intern_c_string ("external-debugging-output"); |
| 2302 | staticpro (&Qexternal_debugging_output); |
| 2303 | |
| 2304 | Qprint_escape_newlines = intern_c_string ("print-escape-newlines"); |
| 2305 | staticpro (&Qprint_escape_newlines); |
| 2306 | |
| 2307 | Qprint_escape_multibyte = intern_c_string ("print-escape-multibyte"); |
| 2308 | staticpro (&Qprint_escape_multibyte); |
| 2309 | |
| 2310 | Qprint_escape_nonascii = intern_c_string ("print-escape-nonascii"); |
| 2311 | staticpro (&Qprint_escape_nonascii); |
| 2312 | |
| 2313 | print_prune_charset_plist = Qnil; |
| 2314 | staticpro (&print_prune_charset_plist); |
| 2315 | |
| 2316 | defsubr (&Swith_output_to_temp_buffer); |
| 2317 | } |