| 1 | /* Lisp object printing and output streams. |
| 2 | Copyright (C) 1985, 1986, 1988, 1993, 1994, 1995, 1997, |
| 3 | 1998, 1999, 2000, 2001, 2002, 2003, 2004, |
| 4 | 2005, 2006, 2007, 2008, 2009, 2010 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 Vstandard_output, Qstandard_output; |
| 41 | |
| 42 | Lisp_Object Qtemp_buffer_setup_hook; |
| 43 | |
| 44 | /* These are used to print like we read. */ |
| 45 | extern Lisp_Object Qbackquote, Qcomma, Qcomma_at, Qcomma_dot, Qfunction; |
| 46 | |
| 47 | Lisp_Object Vfloat_output_format, Qfloat_output_format; |
| 48 | |
| 49 | #include <math.h> |
| 50 | |
| 51 | #if STDC_HEADERS |
| 52 | #include <float.h> |
| 53 | #endif |
| 54 | |
| 55 | /* Default to values appropriate for IEEE floating point. */ |
| 56 | #ifndef FLT_RADIX |
| 57 | #define FLT_RADIX 2 |
| 58 | #endif |
| 59 | #ifndef DBL_MANT_DIG |
| 60 | #define DBL_MANT_DIG 53 |
| 61 | #endif |
| 62 | #ifndef DBL_DIG |
| 63 | #define DBL_DIG 15 |
| 64 | #endif |
| 65 | #ifndef DBL_MIN |
| 66 | #define DBL_MIN 2.2250738585072014e-308 |
| 67 | #endif |
| 68 | |
| 69 | #ifdef DBL_MIN_REPLACEMENT |
| 70 | #undef DBL_MIN |
| 71 | #define DBL_MIN DBL_MIN_REPLACEMENT |
| 72 | #endif |
| 73 | |
| 74 | /* Define DOUBLE_DIGITS_BOUND, an upper bound on the number of decimal digits |
| 75 | needed to express a float without losing information. |
| 76 | The general-case formula is valid for the usual case, IEEE floating point, |
| 77 | but many compilers can't optimize the formula to an integer constant, |
| 78 | so make a special case for it. */ |
| 79 | #if FLT_RADIX == 2 && DBL_MANT_DIG == 53 |
| 80 | #define DOUBLE_DIGITS_BOUND 17 /* IEEE floating point */ |
| 81 | #else |
| 82 | #define DOUBLE_DIGITS_BOUND ((int) ceil (log10 (pow (FLT_RADIX, DBL_MANT_DIG)))) |
| 83 | #endif |
| 84 | |
| 85 | /* Avoid actual stack overflow in print. */ |
| 86 | int print_depth; |
| 87 | |
| 88 | /* Level of nesting inside outputting backquote in new style. */ |
| 89 | int new_backquote_output; |
| 90 | |
| 91 | /* Detect most circularities to print finite output. */ |
| 92 | #define PRINT_CIRCLE 200 |
| 93 | Lisp_Object being_printed[PRINT_CIRCLE]; |
| 94 | |
| 95 | /* When printing into a buffer, first we put the text in this |
| 96 | block, then insert it all at once. */ |
| 97 | char *print_buffer; |
| 98 | |
| 99 | /* Size allocated in print_buffer. */ |
| 100 | int print_buffer_size; |
| 101 | /* Chars stored in print_buffer. */ |
| 102 | int print_buffer_pos; |
| 103 | /* Bytes stored in print_buffer. */ |
| 104 | int print_buffer_pos_byte; |
| 105 | |
| 106 | /* Maximum length of list to print in full; noninteger means |
| 107 | effectively infinity */ |
| 108 | |
| 109 | Lisp_Object Vprint_length; |
| 110 | |
| 111 | /* Maximum depth of list to print in full; noninteger means |
| 112 | effectively infinity. */ |
| 113 | |
| 114 | Lisp_Object Vprint_level; |
| 115 | |
| 116 | /* Nonzero means print newlines in strings as \n. */ |
| 117 | |
| 118 | int print_escape_newlines; |
| 119 | |
| 120 | /* Nonzero means to print single-byte non-ascii characters in strings as |
| 121 | octal escapes. */ |
| 122 | |
| 123 | int print_escape_nonascii; |
| 124 | |
| 125 | /* Nonzero means to print multibyte characters in strings as hex escapes. */ |
| 126 | |
| 127 | int print_escape_multibyte; |
| 128 | |
| 129 | Lisp_Object Qprint_escape_newlines; |
| 130 | Lisp_Object Qprint_escape_multibyte, Qprint_escape_nonascii; |
| 131 | |
| 132 | /* Nonzero means print (quote foo) forms as 'foo, etc. */ |
| 133 | |
| 134 | int print_quoted; |
| 135 | |
| 136 | /* Non-nil means print #: before uninterned symbols. */ |
| 137 | |
| 138 | Lisp_Object Vprint_gensym; |
| 139 | |
| 140 | /* Non-nil means print recursive structures using #n= and #n# syntax. */ |
| 141 | |
| 142 | Lisp_Object Vprint_circle; |
| 143 | |
| 144 | /* Non-nil means keep continuous number for #n= and #n# syntax |
| 145 | between several print functions. */ |
| 146 | |
| 147 | Lisp_Object Vprint_continuous_numbering; |
| 148 | |
| 149 | /* Vprint_number_table is a vector like [OBJ1 STAT1 OBJ2 STAT2 ...], |
| 150 | where OBJn are objects going to be printed, and STATn are their status, |
| 151 | which may be different meanings during process. See the comments of |
| 152 | the functions print and print_preprocess for details. |
| 153 | print_number_index keeps the last position the next object should be added, |
| 154 | twice of which is the actual vector position in Vprint_number_table. */ |
| 155 | int print_number_index; |
| 156 | Lisp_Object Vprint_number_table; |
| 157 | |
| 158 | /* PRINT_NUMBER_OBJECT returns the I'th object in Vprint_number_table TABLE. |
| 159 | PRINT_NUMBER_STATUS returns the status of the I'th object in TABLE. |
| 160 | See the comment of the variable Vprint_number_table. */ |
| 161 | #define PRINT_NUMBER_OBJECT(table,i) XVECTOR ((table))->contents[(i) * 2] |
| 162 | #define PRINT_NUMBER_STATUS(table,i) XVECTOR ((table))->contents[(i) * 2 + 1] |
| 163 | |
| 164 | /* Nonzero means print newline to stdout before next minibuffer message. |
| 165 | Defined in xdisp.c */ |
| 166 | |
| 167 | extern int noninteractive_need_newline; |
| 168 | |
| 169 | extern int minibuffer_auto_raise; |
| 170 | |
| 171 | void print_interval (); |
| 172 | |
| 173 | /* GDB resets this to zero on W32 to disable OutputDebugString calls. */ |
| 174 | int print_output_debug_flag = 1; |
| 175 | |
| 176 | \f |
| 177 | /* Low level output routines for characters and strings */ |
| 178 | |
| 179 | /* Lisp functions to do output using a stream |
| 180 | must have the stream in a variable called printcharfun |
| 181 | and must start with PRINTPREPARE, end with PRINTFINISH, |
| 182 | and use PRINTDECLARE to declare common variables. |
| 183 | Use PRINTCHAR to output one character, |
| 184 | or call strout to output a block of characters. */ |
| 185 | |
| 186 | #define PRINTDECLARE \ |
| 187 | struct buffer *old = current_buffer; \ |
| 188 | int old_point = -1, start_point = -1; \ |
| 189 | int old_point_byte = -1, start_point_byte = -1; \ |
| 190 | int specpdl_count = SPECPDL_INDEX (); \ |
| 191 | int free_print_buffer = 0; \ |
| 192 | int multibyte = !NILP (current_buffer->enable_multibyte_characters); \ |
| 193 | Lisp_Object original |
| 194 | |
| 195 | #define PRINTPREPARE \ |
| 196 | original = printcharfun; \ |
| 197 | if (NILP (printcharfun)) printcharfun = Qt; \ |
| 198 | if (BUFFERP (printcharfun)) \ |
| 199 | { \ |
| 200 | if (XBUFFER (printcharfun) != current_buffer) \ |
| 201 | Fset_buffer (printcharfun); \ |
| 202 | printcharfun = Qnil; \ |
| 203 | } \ |
| 204 | if (MARKERP (printcharfun)) \ |
| 205 | { \ |
| 206 | EMACS_INT marker_pos; \ |
| 207 | if (! XMARKER (printcharfun)->buffer) \ |
| 208 | error ("Marker does not point anywhere"); \ |
| 209 | if (XMARKER (printcharfun)->buffer != current_buffer) \ |
| 210 | set_buffer_internal (XMARKER (printcharfun)->buffer); \ |
| 211 | marker_pos = marker_position (printcharfun); \ |
| 212 | if (marker_pos < BEGV || marker_pos > ZV) \ |
| 213 | error ("Marker is outside the accessible part of the buffer"); \ |
| 214 | old_point = PT; \ |
| 215 | old_point_byte = PT_BYTE; \ |
| 216 | SET_PT_BOTH (marker_pos, \ |
| 217 | marker_byte_position (printcharfun)); \ |
| 218 | start_point = PT; \ |
| 219 | start_point_byte = PT_BYTE; \ |
| 220 | printcharfun = Qnil; \ |
| 221 | } \ |
| 222 | if (NILP (printcharfun)) \ |
| 223 | { \ |
| 224 | Lisp_Object string; \ |
| 225 | if (NILP (current_buffer->enable_multibyte_characters) \ |
| 226 | && ! print_escape_multibyte) \ |
| 227 | specbind (Qprint_escape_multibyte, Qt); \ |
| 228 | if (! NILP (current_buffer->enable_multibyte_characters) \ |
| 229 | && ! print_escape_nonascii) \ |
| 230 | specbind (Qprint_escape_nonascii, Qt); \ |
| 231 | if (print_buffer != 0) \ |
| 232 | { \ |
| 233 | string = make_string_from_bytes (print_buffer, \ |
| 234 | print_buffer_pos, \ |
| 235 | print_buffer_pos_byte); \ |
| 236 | record_unwind_protect (print_unwind, string); \ |
| 237 | } \ |
| 238 | else \ |
| 239 | { \ |
| 240 | print_buffer_size = 1000; \ |
| 241 | print_buffer = (char *) xmalloc (print_buffer_size); \ |
| 242 | free_print_buffer = 1; \ |
| 243 | } \ |
| 244 | print_buffer_pos = 0; \ |
| 245 | print_buffer_pos_byte = 0; \ |
| 246 | } \ |
| 247 | if (EQ (printcharfun, Qt) && ! noninteractive) \ |
| 248 | setup_echo_area_for_printing (multibyte); |
| 249 | |
| 250 | #define PRINTFINISH \ |
| 251 | if (NILP (printcharfun)) \ |
| 252 | { \ |
| 253 | if (print_buffer_pos != print_buffer_pos_byte \ |
| 254 | && NILP (current_buffer->enable_multibyte_characters)) \ |
| 255 | { \ |
| 256 | unsigned char *temp \ |
| 257 | = (unsigned char *) alloca (print_buffer_pos + 1); \ |
| 258 | copy_text (print_buffer, temp, print_buffer_pos_byte, \ |
| 259 | 1, 0); \ |
| 260 | insert_1_both (temp, print_buffer_pos, \ |
| 261 | print_buffer_pos, 0, 1, 0); \ |
| 262 | } \ |
| 263 | else \ |
| 264 | insert_1_both (print_buffer, print_buffer_pos, \ |
| 265 | print_buffer_pos_byte, 0, 1, 0); \ |
| 266 | signal_after_change (PT - print_buffer_pos, 0, print_buffer_pos);\ |
| 267 | } \ |
| 268 | if (free_print_buffer) \ |
| 269 | { \ |
| 270 | xfree (print_buffer); \ |
| 271 | print_buffer = 0; \ |
| 272 | } \ |
| 273 | unbind_to (specpdl_count, Qnil); \ |
| 274 | if (MARKERP (original)) \ |
| 275 | set_marker_both (original, Qnil, PT, PT_BYTE); \ |
| 276 | if (old_point >= 0) \ |
| 277 | SET_PT_BOTH (old_point + (old_point >= start_point \ |
| 278 | ? PT - start_point : 0), \ |
| 279 | old_point_byte + (old_point_byte >= start_point_byte \ |
| 280 | ? PT_BYTE - start_point_byte : 0)); \ |
| 281 | if (old != current_buffer) \ |
| 282 | set_buffer_internal (old); |
| 283 | |
| 284 | #define PRINTCHAR(ch) printchar (ch, printcharfun) |
| 285 | |
| 286 | /* This is used to restore the saved contents of print_buffer |
| 287 | when there is a recursive call to print. */ |
| 288 | |
| 289 | static Lisp_Object |
| 290 | print_unwind (saved_text) |
| 291 | Lisp_Object saved_text; |
| 292 | { |
| 293 | bcopy (SDATA (saved_text), print_buffer, SCHARS (saved_text)); |
| 294 | return Qnil; |
| 295 | } |
| 296 | |
| 297 | |
| 298 | /* Print character CH using method FUN. FUN nil means print to |
| 299 | print_buffer. FUN t means print to echo area or stdout if |
| 300 | non-interactive. If FUN is neither nil nor t, call FUN with CH as |
| 301 | argument. */ |
| 302 | |
| 303 | static void |
| 304 | printchar (ch, fun) |
| 305 | unsigned int ch; |
| 306 | Lisp_Object fun; |
| 307 | { |
| 308 | if (!NILP (fun) && !EQ (fun, Qt)) |
| 309 | call1 (fun, make_number (ch)); |
| 310 | else |
| 311 | { |
| 312 | unsigned char str[MAX_MULTIBYTE_LENGTH]; |
| 313 | int len = CHAR_STRING (ch, str); |
| 314 | |
| 315 | QUIT; |
| 316 | |
| 317 | if (NILP (fun)) |
| 318 | { |
| 319 | if (print_buffer_pos_byte + len >= print_buffer_size) |
| 320 | print_buffer = (char *) xrealloc (print_buffer, |
| 321 | print_buffer_size *= 2); |
| 322 | bcopy (str, print_buffer + print_buffer_pos_byte, len); |
| 323 | print_buffer_pos += 1; |
| 324 | print_buffer_pos_byte += len; |
| 325 | } |
| 326 | else if (noninteractive) |
| 327 | { |
| 328 | fwrite (str, 1, len, stdout); |
| 329 | noninteractive_need_newline = 1; |
| 330 | } |
| 331 | else |
| 332 | { |
| 333 | int multibyte_p |
| 334 | = !NILP (current_buffer->enable_multibyte_characters); |
| 335 | |
| 336 | setup_echo_area_for_printing (multibyte_p); |
| 337 | insert_char (ch); |
| 338 | message_dolog (str, len, 0, multibyte_p); |
| 339 | } |
| 340 | } |
| 341 | } |
| 342 | |
| 343 | |
| 344 | /* Output SIZE characters, SIZE_BYTE bytes from string PTR using |
| 345 | method PRINTCHARFUN. If SIZE < 0, use the string length of PTR for |
| 346 | both SIZE and SIZE_BYTE. PRINTCHARFUN nil means output to |
| 347 | print_buffer. PRINTCHARFUN t means output to the echo area or to |
| 348 | stdout if non-interactive. If neither nil nor t, call Lisp |
| 349 | function PRINTCHARFUN for each character printed. MULTIBYTE |
| 350 | non-zero means PTR contains multibyte characters. |
| 351 | |
| 352 | In the case where PRINTCHARFUN is nil, it is safe for PTR to point |
| 353 | to data in a Lisp string. Otherwise that is not safe. */ |
| 354 | |
| 355 | static void |
| 356 | strout (ptr, size, size_byte, printcharfun, multibyte) |
| 357 | char *ptr; |
| 358 | int size, size_byte; |
| 359 | Lisp_Object printcharfun; |
| 360 | int multibyte; |
| 361 | { |
| 362 | if (size < 0) |
| 363 | size_byte = size = strlen (ptr); |
| 364 | |
| 365 | if (NILP (printcharfun)) |
| 366 | { |
| 367 | if (print_buffer_pos_byte + size_byte > print_buffer_size) |
| 368 | { |
| 369 | print_buffer_size = print_buffer_size * 2 + size_byte; |
| 370 | print_buffer = (char *) xrealloc (print_buffer, |
| 371 | print_buffer_size); |
| 372 | } |
| 373 | bcopy (ptr, print_buffer + print_buffer_pos_byte, size_byte); |
| 374 | print_buffer_pos += size; |
| 375 | print_buffer_pos_byte += size_byte; |
| 376 | } |
| 377 | else if (noninteractive && EQ (printcharfun, Qt)) |
| 378 | { |
| 379 | fwrite (ptr, 1, size_byte, stdout); |
| 380 | noninteractive_need_newline = 1; |
| 381 | } |
| 382 | else if (EQ (printcharfun, Qt)) |
| 383 | { |
| 384 | /* Output to echo area. We're trying to avoid a little overhead |
| 385 | here, that's the reason we don't call printchar to do the |
| 386 | job. */ |
| 387 | int i; |
| 388 | int multibyte_p |
| 389 | = !NILP (current_buffer->enable_multibyte_characters); |
| 390 | |
| 391 | setup_echo_area_for_printing (multibyte_p); |
| 392 | message_dolog (ptr, size_byte, 0, multibyte_p); |
| 393 | |
| 394 | if (size == size_byte) |
| 395 | { |
| 396 | for (i = 0; i < size; ++i) |
| 397 | insert_char ((unsigned char) *ptr++); |
| 398 | } |
| 399 | else |
| 400 | { |
| 401 | int len; |
| 402 | for (i = 0; i < size_byte; i += len) |
| 403 | { |
| 404 | int ch = STRING_CHAR_AND_LENGTH (ptr + i, len); |
| 405 | insert_char (ch); |
| 406 | } |
| 407 | } |
| 408 | } |
| 409 | else |
| 410 | { |
| 411 | /* PRINTCHARFUN is a Lisp function. */ |
| 412 | int i = 0; |
| 413 | |
| 414 | if (size == size_byte) |
| 415 | { |
| 416 | while (i < size_byte) |
| 417 | { |
| 418 | int ch = ptr[i++]; |
| 419 | PRINTCHAR (ch); |
| 420 | } |
| 421 | } |
| 422 | else |
| 423 | { |
| 424 | while (i < size_byte) |
| 425 | { |
| 426 | /* Here, we must convert each multi-byte form to the |
| 427 | corresponding character code before handing it to |
| 428 | PRINTCHAR. */ |
| 429 | int len; |
| 430 | int ch = STRING_CHAR_AND_LENGTH (ptr + i, len); |
| 431 | PRINTCHAR (ch); |
| 432 | i += len; |
| 433 | } |
| 434 | } |
| 435 | } |
| 436 | } |
| 437 | |
| 438 | /* Print the contents of a string STRING using PRINTCHARFUN. |
| 439 | It isn't safe to use strout in many cases, |
| 440 | because printing one char can relocate. */ |
| 441 | |
| 442 | static void |
| 443 | print_string (string, printcharfun) |
| 444 | Lisp_Object string; |
| 445 | Lisp_Object printcharfun; |
| 446 | { |
| 447 | if (EQ (printcharfun, Qt) || NILP (printcharfun)) |
| 448 | { |
| 449 | int chars; |
| 450 | |
| 451 | if (print_escape_nonascii) |
| 452 | string = string_escape_byte8 (string); |
| 453 | |
| 454 | if (STRING_MULTIBYTE (string)) |
| 455 | chars = SCHARS (string); |
| 456 | else if (! print_escape_nonascii |
| 457 | && (EQ (printcharfun, Qt) |
| 458 | ? ! NILP (buffer_defaults.enable_multibyte_characters) |
| 459 | : ! NILP (current_buffer->enable_multibyte_characters))) |
| 460 | { |
| 461 | /* If unibyte string STRING contains 8-bit codes, we must |
| 462 | convert STRING to a multibyte string containing the same |
| 463 | character codes. */ |
| 464 | Lisp_Object newstr; |
| 465 | int bytes; |
| 466 | |
| 467 | chars = SBYTES (string); |
| 468 | bytes = parse_str_to_multibyte (SDATA (string), chars); |
| 469 | if (chars < bytes) |
| 470 | { |
| 471 | newstr = make_uninit_multibyte_string (chars, bytes); |
| 472 | bcopy (SDATA (string), SDATA (newstr), chars); |
| 473 | str_to_multibyte (SDATA (newstr), bytes, chars); |
| 474 | string = newstr; |
| 475 | } |
| 476 | } |
| 477 | else |
| 478 | chars = SBYTES (string); |
| 479 | |
| 480 | if (EQ (printcharfun, Qt)) |
| 481 | { |
| 482 | /* Output to echo area. */ |
| 483 | int nbytes = SBYTES (string); |
| 484 | char *buffer; |
| 485 | |
| 486 | /* Copy the string contents so that relocation of STRING by |
| 487 | GC does not cause trouble. */ |
| 488 | USE_SAFE_ALLOCA; |
| 489 | |
| 490 | SAFE_ALLOCA (buffer, char *, nbytes); |
| 491 | bcopy (SDATA (string), buffer, nbytes); |
| 492 | |
| 493 | strout (buffer, chars, SBYTES (string), |
| 494 | printcharfun, STRING_MULTIBYTE (string)); |
| 495 | |
| 496 | SAFE_FREE (); |
| 497 | } |
| 498 | else |
| 499 | /* No need to copy, since output to print_buffer can't GC. */ |
| 500 | strout (SDATA (string), |
| 501 | chars, SBYTES (string), |
| 502 | printcharfun, STRING_MULTIBYTE (string)); |
| 503 | } |
| 504 | else |
| 505 | { |
| 506 | /* Otherwise, string may be relocated by printing one char. |
| 507 | So re-fetch the string address for each character. */ |
| 508 | int i; |
| 509 | int size = SCHARS (string); |
| 510 | int size_byte = SBYTES (string); |
| 511 | struct gcpro gcpro1; |
| 512 | GCPRO1 (string); |
| 513 | if (size == size_byte) |
| 514 | for (i = 0; i < size; i++) |
| 515 | PRINTCHAR (SREF (string, i)); |
| 516 | else |
| 517 | for (i = 0; i < size_byte; ) |
| 518 | { |
| 519 | /* Here, we must convert each multi-byte form to the |
| 520 | corresponding character code before handing it to PRINTCHAR. */ |
| 521 | int len; |
| 522 | int ch = STRING_CHAR_AND_LENGTH (SDATA (string) + i, len); |
| 523 | PRINTCHAR (ch); |
| 524 | i += len; |
| 525 | } |
| 526 | UNGCPRO; |
| 527 | } |
| 528 | } |
| 529 | \f |
| 530 | DEFUN ("write-char", Fwrite_char, Swrite_char, 1, 2, 0, |
| 531 | doc: /* Output character CHARACTER to stream PRINTCHARFUN. |
| 532 | PRINTCHARFUN defaults to the value of `standard-output' (which see). */) |
| 533 | (character, printcharfun) |
| 534 | Lisp_Object character, printcharfun; |
| 535 | { |
| 536 | PRINTDECLARE; |
| 537 | |
| 538 | if (NILP (printcharfun)) |
| 539 | printcharfun = Vstandard_output; |
| 540 | CHECK_NUMBER (character); |
| 541 | PRINTPREPARE; |
| 542 | PRINTCHAR (XINT (character)); |
| 543 | PRINTFINISH; |
| 544 | return character; |
| 545 | } |
| 546 | |
| 547 | /* Used from outside of print.c to print a block of SIZE |
| 548 | single-byte chars at DATA on the default output stream. |
| 549 | Do not use this on the contents of a Lisp string. */ |
| 550 | |
| 551 | void |
| 552 | write_string (data, size) |
| 553 | char *data; |
| 554 | int size; |
| 555 | { |
| 556 | PRINTDECLARE; |
| 557 | Lisp_Object printcharfun; |
| 558 | |
| 559 | printcharfun = Vstandard_output; |
| 560 | |
| 561 | PRINTPREPARE; |
| 562 | strout (data, size, size, printcharfun, 0); |
| 563 | PRINTFINISH; |
| 564 | } |
| 565 | |
| 566 | /* Used from outside of print.c to print a block of SIZE |
| 567 | single-byte chars at DATA on a specified stream PRINTCHARFUN. |
| 568 | Do not use this on the contents of a Lisp string. */ |
| 569 | |
| 570 | void |
| 571 | write_string_1 (data, size, printcharfun) |
| 572 | char *data; |
| 573 | int size; |
| 574 | Lisp_Object printcharfun; |
| 575 | { |
| 576 | PRINTDECLARE; |
| 577 | |
| 578 | PRINTPREPARE; |
| 579 | strout (data, size, size, printcharfun, 0); |
| 580 | PRINTFINISH; |
| 581 | } |
| 582 | |
| 583 | |
| 584 | void |
| 585 | temp_output_buffer_setup (bufname) |
| 586 | const char *bufname; |
| 587 | { |
| 588 | int count = SPECPDL_INDEX (); |
| 589 | register struct buffer *old = current_buffer; |
| 590 | register Lisp_Object buf; |
| 591 | |
| 592 | record_unwind_protect (set_buffer_if_live, Fcurrent_buffer ()); |
| 593 | |
| 594 | Fset_buffer (Fget_buffer_create (build_string (bufname))); |
| 595 | |
| 596 | Fkill_all_local_variables (); |
| 597 | delete_all_overlays (current_buffer); |
| 598 | current_buffer->directory = old->directory; |
| 599 | current_buffer->read_only = Qnil; |
| 600 | current_buffer->filename = Qnil; |
| 601 | current_buffer->undo_list = Qt; |
| 602 | eassert (current_buffer->overlays_before == NULL); |
| 603 | eassert (current_buffer->overlays_after == NULL); |
| 604 | current_buffer->enable_multibyte_characters |
| 605 | = buffer_defaults.enable_multibyte_characters; |
| 606 | specbind (Qinhibit_read_only, Qt); |
| 607 | specbind (Qinhibit_modification_hooks, Qt); |
| 608 | Ferase_buffer (); |
| 609 | XSETBUFFER (buf, current_buffer); |
| 610 | |
| 611 | Frun_hooks (1, &Qtemp_buffer_setup_hook); |
| 612 | |
| 613 | unbind_to (count, Qnil); |
| 614 | |
| 615 | specbind (Qstandard_output, buf); |
| 616 | } |
| 617 | |
| 618 | Lisp_Object |
| 619 | internal_with_output_to_temp_buffer (bufname, function, args) |
| 620 | const char *bufname; |
| 621 | Lisp_Object (*function) P_ ((Lisp_Object)); |
| 622 | Lisp_Object args; |
| 623 | { |
| 624 | int count = SPECPDL_INDEX (); |
| 625 | Lisp_Object buf, val; |
| 626 | struct gcpro gcpro1; |
| 627 | |
| 628 | GCPRO1 (args); |
| 629 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); |
| 630 | temp_output_buffer_setup (bufname); |
| 631 | buf = Vstandard_output; |
| 632 | UNGCPRO; |
| 633 | |
| 634 | val = (*function) (args); |
| 635 | |
| 636 | GCPRO1 (val); |
| 637 | temp_output_buffer_show (buf); |
| 638 | UNGCPRO; |
| 639 | |
| 640 | return unbind_to (count, val); |
| 641 | } |
| 642 | |
| 643 | DEFUN ("with-output-to-temp-buffer", |
| 644 | Fwith_output_to_temp_buffer, Swith_output_to_temp_buffer, |
| 645 | 1, UNEVALLED, 0, |
| 646 | doc: /* Bind `standard-output' to buffer BUFNAME, eval BODY, then show that buffer. |
| 647 | |
| 648 | This construct makes buffer BUFNAME empty before running BODY. |
| 649 | It does not make the buffer current for BODY. |
| 650 | Instead it binds `standard-output' to that buffer, so that output |
| 651 | generated with `prin1' and similar functions in BODY goes into |
| 652 | the buffer. |
| 653 | |
| 654 | At the end of BODY, this marks buffer BUFNAME unmodifed and displays |
| 655 | it in a window, but does not select it. The normal way to do this is |
| 656 | by calling `display-buffer', then running `temp-buffer-show-hook'. |
| 657 | However, if `temp-buffer-show-function' is non-nil, it calls that |
| 658 | function instead (and does not run `temp-buffer-show-hook'). The |
| 659 | function gets one argument, the buffer to display. |
| 660 | |
| 661 | The return value of `with-output-to-temp-buffer' is the value of the |
| 662 | last form in BODY. If BODY does not finish normally, the buffer |
| 663 | BUFNAME is not displayed. |
| 664 | |
| 665 | This runs the hook `temp-buffer-setup-hook' before BODY, |
| 666 | with the buffer BUFNAME temporarily current. It runs the hook |
| 667 | `temp-buffer-show-hook' after displaying buffer BUFNAME, with that |
| 668 | buffer temporarily current, and the window that was used to display it |
| 669 | temporarily selected. But it doesn't run `temp-buffer-show-hook' |
| 670 | if it uses `temp-buffer-show-function'. |
| 671 | |
| 672 | usage: (with-output-to-temp-buffer BUFNAME BODY...) */) |
| 673 | (args) |
| 674 | Lisp_Object args; |
| 675 | { |
| 676 | struct gcpro gcpro1; |
| 677 | Lisp_Object name; |
| 678 | int count = SPECPDL_INDEX (); |
| 679 | Lisp_Object buf, val; |
| 680 | |
| 681 | GCPRO1(args); |
| 682 | name = Feval (Fcar (args)); |
| 683 | CHECK_STRING (name); |
| 684 | temp_output_buffer_setup (SDATA (name)); |
| 685 | buf = Vstandard_output; |
| 686 | UNGCPRO; |
| 687 | |
| 688 | val = Fprogn (XCDR (args)); |
| 689 | |
| 690 | GCPRO1 (val); |
| 691 | temp_output_buffer_show (buf); |
| 692 | UNGCPRO; |
| 693 | |
| 694 | return unbind_to (count, val); |
| 695 | } |
| 696 | |
| 697 | \f |
| 698 | static void print (); |
| 699 | static void print_preprocess (); |
| 700 | static void print_preprocess_string (); |
| 701 | static void print_object (); |
| 702 | |
| 703 | DEFUN ("terpri", Fterpri, Sterpri, 0, 1, 0, |
| 704 | doc: /* Output a newline to stream PRINTCHARFUN. |
| 705 | If PRINTCHARFUN is omitted or nil, the value of `standard-output' is used. */) |
| 706 | (printcharfun) |
| 707 | Lisp_Object printcharfun; |
| 708 | { |
| 709 | PRINTDECLARE; |
| 710 | |
| 711 | if (NILP (printcharfun)) |
| 712 | printcharfun = Vstandard_output; |
| 713 | PRINTPREPARE; |
| 714 | PRINTCHAR ('\n'); |
| 715 | PRINTFINISH; |
| 716 | return Qt; |
| 717 | } |
| 718 | |
| 719 | DEFUN ("prin1", Fprin1, Sprin1, 1, 2, 0, |
| 720 | doc: /* Output the printed representation of OBJECT, any Lisp object. |
| 721 | Quoting characters are printed when needed to make output that `read' |
| 722 | can handle, whenever this is possible. For complex objects, the behavior |
| 723 | is controlled by `print-level' and `print-length', which see. |
| 724 | |
| 725 | OBJECT is any of the Lisp data types: a number, a string, a symbol, |
| 726 | a list, a buffer, a window, a frame, etc. |
| 727 | |
| 728 | A printed representation of an object is text which describes that object. |
| 729 | |
| 730 | Optional argument PRINTCHARFUN is the output stream, which can be one |
| 731 | of these: |
| 732 | |
| 733 | - a buffer, in which case output is inserted into that buffer at point; |
| 734 | - a marker, in which case output is inserted at marker's position; |
| 735 | - a function, in which case that function is called once for each |
| 736 | character of OBJECT's printed representation; |
| 737 | - a symbol, in which case that symbol's function definition is called; or |
| 738 | - t, in which case the output is displayed in the echo area. |
| 739 | |
| 740 | If PRINTCHARFUN is omitted, the value of `standard-output' (which see) |
| 741 | is used instead. */) |
| 742 | (object, printcharfun) |
| 743 | Lisp_Object object, printcharfun; |
| 744 | { |
| 745 | PRINTDECLARE; |
| 746 | |
| 747 | if (NILP (printcharfun)) |
| 748 | printcharfun = Vstandard_output; |
| 749 | PRINTPREPARE; |
| 750 | print (object, printcharfun, 1); |
| 751 | PRINTFINISH; |
| 752 | return object; |
| 753 | } |
| 754 | |
| 755 | /* a buffer which is used to hold output being built by prin1-to-string */ |
| 756 | Lisp_Object Vprin1_to_string_buffer; |
| 757 | |
| 758 | DEFUN ("prin1-to-string", Fprin1_to_string, Sprin1_to_string, 1, 2, 0, |
| 759 | doc: /* Return a string containing the printed representation of OBJECT. |
| 760 | OBJECT can be any Lisp object. This function outputs quoting characters |
| 761 | when necessary to make output that `read' can handle, whenever possible, |
| 762 | unless the optional second argument NOESCAPE is non-nil. For complex objects, |
| 763 | the behavior is controlled by `print-level' and `print-length', which see. |
| 764 | |
| 765 | OBJECT is any of the Lisp data types: a number, a string, a symbol, |
| 766 | a list, a buffer, a window, a frame, etc. |
| 767 | |
| 768 | A printed representation of an object is text which describes that object. */) |
| 769 | (object, noescape) |
| 770 | Lisp_Object object, noescape; |
| 771 | { |
| 772 | Lisp_Object printcharfun; |
| 773 | /* struct gcpro gcpro1, gcpro2; */ |
| 774 | Lisp_Object save_deactivate_mark; |
| 775 | int count = SPECPDL_INDEX (); |
| 776 | struct buffer *previous; |
| 777 | |
| 778 | specbind (Qinhibit_modification_hooks, Qt); |
| 779 | |
| 780 | { |
| 781 | PRINTDECLARE; |
| 782 | |
| 783 | /* Save and restore this--we are altering a buffer |
| 784 | but we don't want to deactivate the mark just for that. |
| 785 | No need for specbind, since errors deactivate the mark. */ |
| 786 | save_deactivate_mark = Vdeactivate_mark; |
| 787 | /* GCPRO2 (object, save_deactivate_mark); */ |
| 788 | abort_on_gc++; |
| 789 | |
| 790 | printcharfun = Vprin1_to_string_buffer; |
| 791 | PRINTPREPARE; |
| 792 | print (object, printcharfun, NILP (noescape)); |
| 793 | /* Make Vprin1_to_string_buffer be the default buffer after PRINTFINSH */ |
| 794 | PRINTFINISH; |
| 795 | } |
| 796 | |
| 797 | previous = current_buffer; |
| 798 | set_buffer_internal (XBUFFER (Vprin1_to_string_buffer)); |
| 799 | object = Fbuffer_string (); |
| 800 | if (SBYTES (object) == SCHARS (object)) |
| 801 | STRING_SET_UNIBYTE (object); |
| 802 | |
| 803 | /* Note that this won't make prepare_to_modify_buffer call |
| 804 | ask-user-about-supersession-threat because this buffer |
| 805 | does not visit a file. */ |
| 806 | Ferase_buffer (); |
| 807 | set_buffer_internal (previous); |
| 808 | |
| 809 | Vdeactivate_mark = save_deactivate_mark; |
| 810 | /* UNGCPRO; */ |
| 811 | |
| 812 | abort_on_gc--; |
| 813 | return unbind_to (count, object); |
| 814 | } |
| 815 | |
| 816 | DEFUN ("princ", Fprinc, Sprinc, 1, 2, 0, |
| 817 | doc: /* Output the printed representation of OBJECT, any Lisp object. |
| 818 | No quoting characters are used; no delimiters are printed around |
| 819 | the contents of strings. |
| 820 | |
| 821 | OBJECT is any of the Lisp data types: a number, a string, a symbol, |
| 822 | a list, a buffer, a window, a frame, etc. |
| 823 | |
| 824 | A printed representation of an object is text which describes that object. |
| 825 | |
| 826 | Optional argument PRINTCHARFUN is the output stream, which can be one |
| 827 | of these: |
| 828 | |
| 829 | - a buffer, in which case output is inserted into that buffer at point; |
| 830 | - a marker, in which case output is inserted at marker's position; |
| 831 | - a function, in which case that function is called once for each |
| 832 | character of OBJECT's printed representation; |
| 833 | - a symbol, in which case that symbol's function definition is called; or |
| 834 | - t, in which case the output is displayed in the echo area. |
| 835 | |
| 836 | If PRINTCHARFUN is omitted, the value of `standard-output' (which see) |
| 837 | is used instead. */) |
| 838 | (object, printcharfun) |
| 839 | Lisp_Object object, printcharfun; |
| 840 | { |
| 841 | PRINTDECLARE; |
| 842 | |
| 843 | if (NILP (printcharfun)) |
| 844 | printcharfun = Vstandard_output; |
| 845 | PRINTPREPARE; |
| 846 | print (object, printcharfun, 0); |
| 847 | PRINTFINISH; |
| 848 | return object; |
| 849 | } |
| 850 | |
| 851 | DEFUN ("print", Fprint, Sprint, 1, 2, 0, |
| 852 | doc: /* Output the printed representation of OBJECT, with newlines around it. |
| 853 | Quoting characters are printed when needed to make output that `read' |
| 854 | can handle, whenever this is possible. For complex objects, the behavior |
| 855 | is controlled by `print-level' and `print-length', which see. |
| 856 | |
| 857 | OBJECT is any of the Lisp data types: a number, a string, a symbol, |
| 858 | a list, a buffer, a window, a frame, etc. |
| 859 | |
| 860 | A printed representation of an object is text which describes that object. |
| 861 | |
| 862 | Optional argument PRINTCHARFUN is the output stream, which can be one |
| 863 | of these: |
| 864 | |
| 865 | - a buffer, in which case output is inserted into that buffer at point; |
| 866 | - a marker, in which case output is inserted at marker's position; |
| 867 | - a function, in which case that function is called once for each |
| 868 | character of OBJECT's printed representation; |
| 869 | - a symbol, in which case that symbol's function definition is called; or |
| 870 | - t, in which case the output is displayed in the echo area. |
| 871 | |
| 872 | If PRINTCHARFUN is omitted, the value of `standard-output' (which see) |
| 873 | is used instead. */) |
| 874 | (object, printcharfun) |
| 875 | Lisp_Object object, printcharfun; |
| 876 | { |
| 877 | PRINTDECLARE; |
| 878 | struct gcpro gcpro1; |
| 879 | |
| 880 | if (NILP (printcharfun)) |
| 881 | printcharfun = Vstandard_output; |
| 882 | GCPRO1 (object); |
| 883 | PRINTPREPARE; |
| 884 | PRINTCHAR ('\n'); |
| 885 | print (object, printcharfun, 1); |
| 886 | PRINTCHAR ('\n'); |
| 887 | PRINTFINISH; |
| 888 | UNGCPRO; |
| 889 | return object; |
| 890 | } |
| 891 | |
| 892 | /* The subroutine object for external-debugging-output is kept here |
| 893 | for the convenience of the debugger. */ |
| 894 | Lisp_Object Qexternal_debugging_output; |
| 895 | |
| 896 | DEFUN ("external-debugging-output", Fexternal_debugging_output, Sexternal_debugging_output, 1, 1, 0, |
| 897 | doc: /* Write CHARACTER to stderr. |
| 898 | You can call print while debugging emacs, and pass it this function |
| 899 | to make it write to the debugging output. */) |
| 900 | (character) |
| 901 | Lisp_Object character; |
| 902 | { |
| 903 | CHECK_NUMBER (character); |
| 904 | putc (XINT (character), stderr); |
| 905 | |
| 906 | #ifdef WINDOWSNT |
| 907 | /* Send the output to a debugger (nothing happens if there isn't one). */ |
| 908 | if (print_output_debug_flag) |
| 909 | { |
| 910 | char buf[2] = {(char) XINT (character), '\0'}; |
| 911 | OutputDebugString (buf); |
| 912 | } |
| 913 | #endif |
| 914 | |
| 915 | return character; |
| 916 | } |
| 917 | |
| 918 | /* This function is never called. Its purpose is to prevent |
| 919 | print_output_debug_flag from being optimized away. */ |
| 920 | |
| 921 | void |
| 922 | debug_output_compilation_hack (x) |
| 923 | int x; |
| 924 | { |
| 925 | print_output_debug_flag = x; |
| 926 | } |
| 927 | |
| 928 | #if defined (GNU_LINUX) |
| 929 | |
| 930 | /* This functionality is not vitally important in general, so we rely on |
| 931 | non-portable ability to use stderr as lvalue. */ |
| 932 | |
| 933 | #define WITH_REDIRECT_DEBUGGING_OUTPUT 1 |
| 934 | |
| 935 | FILE *initial_stderr_stream = NULL; |
| 936 | |
| 937 | DEFUN ("redirect-debugging-output", Fredirect_debugging_output, Sredirect_debugging_output, |
| 938 | 1, 2, |
| 939 | "FDebug output file: \nP", |
| 940 | doc: /* Redirect debugging output (stderr stream) to file FILE. |
| 941 | If FILE is nil, reset target to the initial stderr stream. |
| 942 | Optional arg APPEND non-nil (interactively, with prefix arg) means |
| 943 | append to existing target file. */) |
| 944 | (file, append) |
| 945 | Lisp_Object file, append; |
| 946 | { |
| 947 | if (initial_stderr_stream != NULL) |
| 948 | { |
| 949 | BLOCK_INPUT; |
| 950 | fclose (stderr); |
| 951 | UNBLOCK_INPUT; |
| 952 | } |
| 953 | stderr = initial_stderr_stream; |
| 954 | initial_stderr_stream = NULL; |
| 955 | |
| 956 | if (STRINGP (file)) |
| 957 | { |
| 958 | file = Fexpand_file_name (file, Qnil); |
| 959 | initial_stderr_stream = stderr; |
| 960 | stderr = fopen (SDATA (file), NILP (append) ? "w" : "a"); |
| 961 | if (stderr == NULL) |
| 962 | { |
| 963 | stderr = initial_stderr_stream; |
| 964 | initial_stderr_stream = NULL; |
| 965 | report_file_error ("Cannot open debugging output stream", |
| 966 | Fcons (file, Qnil)); |
| 967 | } |
| 968 | } |
| 969 | return Qnil; |
| 970 | } |
| 971 | #endif /* GNU_LINUX */ |
| 972 | |
| 973 | |
| 974 | /* This is the interface for debugging printing. */ |
| 975 | |
| 976 | void |
| 977 | debug_print (arg) |
| 978 | Lisp_Object arg; |
| 979 | { |
| 980 | Fprin1 (arg, Qexternal_debugging_output); |
| 981 | fprintf (stderr, "\r\n"); |
| 982 | } |
| 983 | |
| 984 | void |
| 985 | safe_debug_print (arg) |
| 986 | Lisp_Object arg; |
| 987 | { |
| 988 | int valid = valid_lisp_object_p (arg); |
| 989 | |
| 990 | if (valid > 0) |
| 991 | debug_print (arg); |
| 992 | else |
| 993 | fprintf (stderr, "#<%s_LISP_OBJECT 0x%08lx>\r\n", |
| 994 | !valid ? "INVALID" : "SOME", |
| 995 | (unsigned long) XHASH (arg) |
| 996 | ); |
| 997 | } |
| 998 | |
| 999 | \f |
| 1000 | DEFUN ("error-message-string", Ferror_message_string, Serror_message_string, |
| 1001 | 1, 1, 0, |
| 1002 | doc: /* Convert an error value (ERROR-SYMBOL . DATA) to an error message. |
| 1003 | See Info anchor `(elisp)Definition of signal' for some details on how this |
| 1004 | error message is constructed. */) |
| 1005 | (obj) |
| 1006 | Lisp_Object obj; |
| 1007 | { |
| 1008 | struct buffer *old = current_buffer; |
| 1009 | Lisp_Object value; |
| 1010 | struct gcpro gcpro1; |
| 1011 | |
| 1012 | /* If OBJ is (error STRING), just return STRING. |
| 1013 | That is not only faster, it also avoids the need to allocate |
| 1014 | space here when the error is due to memory full. */ |
| 1015 | if (CONSP (obj) && EQ (XCAR (obj), Qerror) |
| 1016 | && CONSP (XCDR (obj)) |
| 1017 | && STRINGP (XCAR (XCDR (obj))) |
| 1018 | && NILP (XCDR (XCDR (obj)))) |
| 1019 | return XCAR (XCDR (obj)); |
| 1020 | |
| 1021 | print_error_message (obj, Vprin1_to_string_buffer, 0, Qnil); |
| 1022 | |
| 1023 | set_buffer_internal (XBUFFER (Vprin1_to_string_buffer)); |
| 1024 | value = Fbuffer_string (); |
| 1025 | |
| 1026 | GCPRO1 (value); |
| 1027 | Ferase_buffer (); |
| 1028 | set_buffer_internal (old); |
| 1029 | UNGCPRO; |
| 1030 | |
| 1031 | return value; |
| 1032 | } |
| 1033 | |
| 1034 | /* Print an error message for the error DATA onto Lisp output stream |
| 1035 | STREAM (suitable for the print functions). |
| 1036 | CONTEXT is a C string describing the context of the error. |
| 1037 | CALLER is the Lisp function inside which the error was signaled. */ |
| 1038 | |
| 1039 | void |
| 1040 | print_error_message (data, stream, context, caller) |
| 1041 | Lisp_Object data, stream; |
| 1042 | char *context; |
| 1043 | Lisp_Object caller; |
| 1044 | { |
| 1045 | Lisp_Object errname, errmsg, file_error, tail; |
| 1046 | struct gcpro gcpro1; |
| 1047 | int i; |
| 1048 | |
| 1049 | if (context != 0) |
| 1050 | write_string_1 (context, -1, stream); |
| 1051 | |
| 1052 | /* If we know from where the error was signaled, show it in |
| 1053 | *Messages*. */ |
| 1054 | if (!NILP (caller) && SYMBOLP (caller)) |
| 1055 | { |
| 1056 | Lisp_Object cname = SYMBOL_NAME (caller); |
| 1057 | char *name = alloca (SBYTES (cname)); |
| 1058 | bcopy (SDATA (cname), name, SBYTES (cname)); |
| 1059 | message_dolog (name, SBYTES (cname), 0, 0); |
| 1060 | message_dolog (": ", 2, 0, 0); |
| 1061 | } |
| 1062 | |
| 1063 | errname = Fcar (data); |
| 1064 | |
| 1065 | if (EQ (errname, Qerror)) |
| 1066 | { |
| 1067 | data = Fcdr (data); |
| 1068 | if (!CONSP (data)) |
| 1069 | data = Qnil; |
| 1070 | errmsg = Fcar (data); |
| 1071 | file_error = Qnil; |
| 1072 | } |
| 1073 | else |
| 1074 | { |
| 1075 | Lisp_Object error_conditions; |
| 1076 | errmsg = Fget (errname, Qerror_message); |
| 1077 | error_conditions = Fget (errname, Qerror_conditions); |
| 1078 | file_error = Fmemq (Qfile_error, error_conditions); |
| 1079 | } |
| 1080 | |
| 1081 | /* Print an error message including the data items. */ |
| 1082 | |
| 1083 | tail = Fcdr_safe (data); |
| 1084 | GCPRO1 (tail); |
| 1085 | |
| 1086 | /* For file-error, make error message by concatenating |
| 1087 | all the data items. They are all strings. */ |
| 1088 | if (!NILP (file_error) && CONSP (tail)) |
| 1089 | errmsg = XCAR (tail), tail = XCDR (tail); |
| 1090 | |
| 1091 | if (STRINGP (errmsg)) |
| 1092 | Fprinc (errmsg, stream); |
| 1093 | else |
| 1094 | write_string_1 ("peculiar error", -1, stream); |
| 1095 | |
| 1096 | for (i = 0; CONSP (tail); tail = XCDR (tail), i++) |
| 1097 | { |
| 1098 | Lisp_Object obj; |
| 1099 | |
| 1100 | write_string_1 (i ? ", " : ": ", 2, stream); |
| 1101 | obj = XCAR (tail); |
| 1102 | if (!NILP (file_error) || EQ (errname, Qend_of_file)) |
| 1103 | Fprinc (obj, stream); |
| 1104 | else |
| 1105 | Fprin1 (obj, stream); |
| 1106 | } |
| 1107 | |
| 1108 | UNGCPRO; |
| 1109 | } |
| 1110 | |
| 1111 | |
| 1112 | \f |
| 1113 | /* |
| 1114 | * The buffer should be at least as large as the max string size of the |
| 1115 | * largest float, printed in the biggest notation. This is undoubtedly |
| 1116 | * 20d float_output_format, with the negative of the C-constant "HUGE" |
| 1117 | * from <math.h>. |
| 1118 | * |
| 1119 | * On the vax the worst case is -1e38 in 20d format which takes 61 bytes. |
| 1120 | * |
| 1121 | * I assume that IEEE-754 format numbers can take 329 bytes for the worst |
| 1122 | * case of -1e307 in 20d float_output_format. What is one to do (short of |
| 1123 | * re-writing _doprnt to be more sane)? |
| 1124 | * -wsr |
| 1125 | */ |
| 1126 | |
| 1127 | void |
| 1128 | float_to_string (buf, data) |
| 1129 | unsigned char *buf; |
| 1130 | double data; |
| 1131 | { |
| 1132 | unsigned char *cp; |
| 1133 | int width; |
| 1134 | |
| 1135 | /* Check for plus infinity in a way that won't lose |
| 1136 | if there is no plus infinity. */ |
| 1137 | if (data == data / 2 && data > 1.0) |
| 1138 | { |
| 1139 | strcpy (buf, "1.0e+INF"); |
| 1140 | return; |
| 1141 | } |
| 1142 | /* Likewise for minus infinity. */ |
| 1143 | if (data == data / 2 && data < -1.0) |
| 1144 | { |
| 1145 | strcpy (buf, "-1.0e+INF"); |
| 1146 | return; |
| 1147 | } |
| 1148 | /* Check for NaN in a way that won't fail if there are no NaNs. */ |
| 1149 | if (! (data * 0.0 >= 0.0)) |
| 1150 | { |
| 1151 | /* Prepend "-" if the NaN's sign bit is negative. |
| 1152 | The sign bit of a double is the bit that is 1 in -0.0. */ |
| 1153 | int i; |
| 1154 | union { double d; char c[sizeof (double)]; } u_data, u_minus_zero; |
| 1155 | u_data.d = data; |
| 1156 | u_minus_zero.d = - 0.0; |
| 1157 | for (i = 0; i < sizeof (double); i++) |
| 1158 | if (u_data.c[i] & u_minus_zero.c[i]) |
| 1159 | { |
| 1160 | *buf++ = '-'; |
| 1161 | break; |
| 1162 | } |
| 1163 | |
| 1164 | strcpy (buf, "0.0e+NaN"); |
| 1165 | return; |
| 1166 | } |
| 1167 | |
| 1168 | if (NILP (Vfloat_output_format) |
| 1169 | || !STRINGP (Vfloat_output_format)) |
| 1170 | lose: |
| 1171 | { |
| 1172 | /* Generate the fewest number of digits that represent the |
| 1173 | floating point value without losing information. |
| 1174 | The following method is simple but a bit slow. |
| 1175 | For ideas about speeding things up, please see: |
| 1176 | |
| 1177 | Guy L Steele Jr & Jon L White, How to print floating-point numbers |
| 1178 | accurately. SIGPLAN notices 25, 6 (June 1990), 112-126. |
| 1179 | |
| 1180 | Robert G Burger & R Kent Dybvig, Printing floating point numbers |
| 1181 | quickly and accurately, SIGPLAN notices 31, 5 (May 1996), 108-116. */ |
| 1182 | |
| 1183 | width = fabs (data) < DBL_MIN ? 1 : DBL_DIG; |
| 1184 | do |
| 1185 | sprintf (buf, "%.*g", width, data); |
| 1186 | while (width++ < DOUBLE_DIGITS_BOUND && atof (buf) != data); |
| 1187 | } |
| 1188 | else /* oink oink */ |
| 1189 | { |
| 1190 | /* Check that the spec we have is fully valid. |
| 1191 | This means not only valid for printf, |
| 1192 | but meant for floats, and reasonable. */ |
| 1193 | cp = SDATA (Vfloat_output_format); |
| 1194 | |
| 1195 | if (cp[0] != '%') |
| 1196 | goto lose; |
| 1197 | if (cp[1] != '.') |
| 1198 | goto lose; |
| 1199 | |
| 1200 | cp += 2; |
| 1201 | |
| 1202 | /* Check the width specification. */ |
| 1203 | width = -1; |
| 1204 | if ('0' <= *cp && *cp <= '9') |
| 1205 | { |
| 1206 | width = 0; |
| 1207 | do |
| 1208 | width = (width * 10) + (*cp++ - '0'); |
| 1209 | while (*cp >= '0' && *cp <= '9'); |
| 1210 | |
| 1211 | /* A precision of zero is valid only for %f. */ |
| 1212 | if (width > DBL_DIG |
| 1213 | || (width == 0 && *cp != 'f')) |
| 1214 | goto lose; |
| 1215 | } |
| 1216 | |
| 1217 | if (*cp != 'e' && *cp != 'f' && *cp != 'g') |
| 1218 | goto lose; |
| 1219 | |
| 1220 | if (cp[1] != 0) |
| 1221 | goto lose; |
| 1222 | |
| 1223 | sprintf (buf, SDATA (Vfloat_output_format), data); |
| 1224 | } |
| 1225 | |
| 1226 | /* Make sure there is a decimal point with digit after, or an |
| 1227 | exponent, so that the value is readable as a float. But don't do |
| 1228 | this with "%.0f"; it's valid for that not to produce a decimal |
| 1229 | point. Note that width can be 0 only for %.0f. */ |
| 1230 | if (width != 0) |
| 1231 | { |
| 1232 | for (cp = buf; *cp; cp++) |
| 1233 | if ((*cp < '0' || *cp > '9') && *cp != '-') |
| 1234 | break; |
| 1235 | |
| 1236 | if (*cp == '.' && cp[1] == 0) |
| 1237 | { |
| 1238 | cp[1] = '0'; |
| 1239 | cp[2] = 0; |
| 1240 | } |
| 1241 | |
| 1242 | if (*cp == 0) |
| 1243 | { |
| 1244 | *cp++ = '.'; |
| 1245 | *cp++ = '0'; |
| 1246 | *cp++ = 0; |
| 1247 | } |
| 1248 | } |
| 1249 | } |
| 1250 | |
| 1251 | \f |
| 1252 | static void |
| 1253 | print (obj, printcharfun, escapeflag) |
| 1254 | Lisp_Object obj; |
| 1255 | register Lisp_Object printcharfun; |
| 1256 | int escapeflag; |
| 1257 | { |
| 1258 | new_backquote_output = 0; |
| 1259 | |
| 1260 | /* Reset print_number_index and Vprint_number_table only when |
| 1261 | the variable Vprint_continuous_numbering is nil. Otherwise, |
| 1262 | the values of these variables will be kept between several |
| 1263 | print functions. */ |
| 1264 | if (NILP (Vprint_continuous_numbering) |
| 1265 | || NILP (Vprint_number_table)) |
| 1266 | { |
| 1267 | print_number_index = 0; |
| 1268 | Vprint_number_table = Qnil; |
| 1269 | } |
| 1270 | |
| 1271 | /* Construct Vprint_number_table for print-gensym and print-circle. */ |
| 1272 | if (!NILP (Vprint_gensym) || !NILP (Vprint_circle)) |
| 1273 | { |
| 1274 | int i, start, index; |
| 1275 | start = index = print_number_index; |
| 1276 | /* Construct Vprint_number_table. |
| 1277 | This increments print_number_index for the objects added. */ |
| 1278 | print_depth = 0; |
| 1279 | print_preprocess (obj); |
| 1280 | |
| 1281 | /* Remove unnecessary objects, which appear only once in OBJ; |
| 1282 | that is, whose status is Qnil. Compactify the necessary objects. */ |
| 1283 | for (i = start; i < print_number_index; i++) |
| 1284 | if (!NILP (PRINT_NUMBER_STATUS (Vprint_number_table, i))) |
| 1285 | { |
| 1286 | PRINT_NUMBER_OBJECT (Vprint_number_table, index) |
| 1287 | = PRINT_NUMBER_OBJECT (Vprint_number_table, i); |
| 1288 | index++; |
| 1289 | } |
| 1290 | |
| 1291 | /* Clear out objects outside the active part of the table. */ |
| 1292 | for (i = index; i < print_number_index; i++) |
| 1293 | PRINT_NUMBER_OBJECT (Vprint_number_table, i) = Qnil; |
| 1294 | |
| 1295 | /* Reset the status field for the next print step. Now this |
| 1296 | field means whether the object has already been printed. */ |
| 1297 | for (i = start; i < print_number_index; i++) |
| 1298 | PRINT_NUMBER_STATUS (Vprint_number_table, i) = Qnil; |
| 1299 | |
| 1300 | print_number_index = index; |
| 1301 | } |
| 1302 | |
| 1303 | print_depth = 0; |
| 1304 | print_object (obj, printcharfun, escapeflag); |
| 1305 | } |
| 1306 | |
| 1307 | /* Construct Vprint_number_table according to the structure of OBJ. |
| 1308 | OBJ itself and all its elements will be added to Vprint_number_table |
| 1309 | recursively if it is a list, vector, compiled function, char-table, |
| 1310 | string (its text properties will be traced), or a symbol that has |
| 1311 | no obarray (this is for the print-gensym feature). |
| 1312 | The status fields of Vprint_number_table mean whether each object appears |
| 1313 | more than once in OBJ: Qnil at the first time, and Qt after that . */ |
| 1314 | static void |
| 1315 | print_preprocess (obj) |
| 1316 | Lisp_Object obj; |
| 1317 | { |
| 1318 | int i; |
| 1319 | EMACS_INT size; |
| 1320 | int loop_count = 0; |
| 1321 | Lisp_Object halftail; |
| 1322 | |
| 1323 | /* Give up if we go so deep that print_object will get an error. */ |
| 1324 | /* See similar code in print_object. */ |
| 1325 | if (print_depth >= PRINT_CIRCLE) |
| 1326 | error ("Apparently circular structure being printed"); |
| 1327 | |
| 1328 | /* Avoid infinite recursion for circular nested structure |
| 1329 | in the case where Vprint_circle is nil. */ |
| 1330 | if (NILP (Vprint_circle)) |
| 1331 | { |
| 1332 | for (i = 0; i < print_depth; i++) |
| 1333 | if (EQ (obj, being_printed[i])) |
| 1334 | return; |
| 1335 | being_printed[print_depth] = obj; |
| 1336 | } |
| 1337 | |
| 1338 | print_depth++; |
| 1339 | halftail = obj; |
| 1340 | |
| 1341 | loop: |
| 1342 | if (STRINGP (obj) || CONSP (obj) || VECTORP (obj) |
| 1343 | || COMPILEDP (obj) || CHAR_TABLE_P (obj) || SUB_CHAR_TABLE_P (obj) |
| 1344 | || HASH_TABLE_P (obj) |
| 1345 | || (! NILP (Vprint_gensym) |
| 1346 | && SYMBOLP (obj) |
| 1347 | && !SYMBOL_INTERNED_P (obj))) |
| 1348 | { |
| 1349 | /* In case print-circle is nil and print-gensym is t, |
| 1350 | add OBJ to Vprint_number_table only when OBJ is a symbol. */ |
| 1351 | if (! NILP (Vprint_circle) || SYMBOLP (obj)) |
| 1352 | { |
| 1353 | for (i = 0; i < print_number_index; i++) |
| 1354 | if (EQ (PRINT_NUMBER_OBJECT (Vprint_number_table, i), obj)) |
| 1355 | { |
| 1356 | /* OBJ appears more than once. Let's remember that. */ |
| 1357 | PRINT_NUMBER_STATUS (Vprint_number_table, i) = Qt; |
| 1358 | print_depth--; |
| 1359 | return; |
| 1360 | } |
| 1361 | |
| 1362 | /* OBJ is not yet recorded. Let's add to the table. */ |
| 1363 | if (print_number_index == 0) |
| 1364 | { |
| 1365 | /* Initialize the table. */ |
| 1366 | Vprint_number_table = Fmake_vector (make_number (40), Qnil); |
| 1367 | } |
| 1368 | else if (XVECTOR (Vprint_number_table)->size == print_number_index * 2) |
| 1369 | { |
| 1370 | /* Reallocate the table. */ |
| 1371 | int i = print_number_index * 4; |
| 1372 | Lisp_Object old_table = Vprint_number_table; |
| 1373 | Vprint_number_table = Fmake_vector (make_number (i), Qnil); |
| 1374 | for (i = 0; i < print_number_index; i++) |
| 1375 | { |
| 1376 | PRINT_NUMBER_OBJECT (Vprint_number_table, i) |
| 1377 | = PRINT_NUMBER_OBJECT (old_table, i); |
| 1378 | PRINT_NUMBER_STATUS (Vprint_number_table, i) |
| 1379 | = PRINT_NUMBER_STATUS (old_table, i); |
| 1380 | } |
| 1381 | } |
| 1382 | PRINT_NUMBER_OBJECT (Vprint_number_table, print_number_index) = obj; |
| 1383 | /* If Vprint_continuous_numbering is non-nil and OBJ is a gensym, |
| 1384 | always print the gensym with a number. This is a special for |
| 1385 | the lisp function byte-compile-output-docform. */ |
| 1386 | if (!NILP (Vprint_continuous_numbering) |
| 1387 | && SYMBOLP (obj) |
| 1388 | && !SYMBOL_INTERNED_P (obj)) |
| 1389 | PRINT_NUMBER_STATUS (Vprint_number_table, print_number_index) = Qt; |
| 1390 | print_number_index++; |
| 1391 | } |
| 1392 | |
| 1393 | switch (XTYPE (obj)) |
| 1394 | { |
| 1395 | case Lisp_String: |
| 1396 | /* A string may have text properties, which can be circular. */ |
| 1397 | traverse_intervals_noorder (STRING_INTERVALS (obj), |
| 1398 | print_preprocess_string, Qnil); |
| 1399 | break; |
| 1400 | |
| 1401 | case Lisp_Cons: |
| 1402 | /* Use HALFTAIL and LOOP_COUNT to detect circular lists, |
| 1403 | just as in print_object. */ |
| 1404 | if (loop_count && EQ (obj, halftail)) |
| 1405 | break; |
| 1406 | print_preprocess (XCAR (obj)); |
| 1407 | obj = XCDR (obj); |
| 1408 | loop_count++; |
| 1409 | if (!(loop_count & 1)) |
| 1410 | halftail = XCDR (halftail); |
| 1411 | goto loop; |
| 1412 | |
| 1413 | case Lisp_Vectorlike: |
| 1414 | size = XVECTOR (obj)->size; |
| 1415 | if (size & PSEUDOVECTOR_FLAG) |
| 1416 | size &= PSEUDOVECTOR_SIZE_MASK; |
| 1417 | for (i = 0; i < size; i++) |
| 1418 | print_preprocess (XVECTOR (obj)->contents[i]); |
| 1419 | if (HASH_TABLE_P (obj)) |
| 1420 | { /* For hash tables, the key_and_value slot is past |
| 1421 | `size' because it needs to be marked specially in case |
| 1422 | the table is weak. */ |
| 1423 | struct Lisp_Hash_Table *h = XHASH_TABLE (obj); |
| 1424 | print_preprocess (h->key_and_value); |
| 1425 | } |
| 1426 | break; |
| 1427 | |
| 1428 | default: |
| 1429 | break; |
| 1430 | } |
| 1431 | } |
| 1432 | print_depth--; |
| 1433 | } |
| 1434 | |
| 1435 | static void |
| 1436 | print_preprocess_string (interval, arg) |
| 1437 | INTERVAL interval; |
| 1438 | Lisp_Object arg; |
| 1439 | { |
| 1440 | print_preprocess (interval->plist); |
| 1441 | } |
| 1442 | |
| 1443 | /* A flag to control printing of `charset' text property. |
| 1444 | The default value is Qdefault. */ |
| 1445 | Lisp_Object Vprint_charset_text_property; |
| 1446 | extern Lisp_Object Qdefault; |
| 1447 | |
| 1448 | static void print_check_string_charset_prop (); |
| 1449 | |
| 1450 | #define PRINT_STRING_NON_CHARSET_FOUND 1 |
| 1451 | #define PRINT_STRING_UNSAFE_CHARSET_FOUND 2 |
| 1452 | |
| 1453 | /* Bitwize or of the abobe macros. */ |
| 1454 | static int print_check_string_result; |
| 1455 | |
| 1456 | static void |
| 1457 | print_check_string_charset_prop (interval, string) |
| 1458 | INTERVAL interval; |
| 1459 | Lisp_Object string; |
| 1460 | { |
| 1461 | Lisp_Object val; |
| 1462 | |
| 1463 | if (NILP (interval->plist) |
| 1464 | || (print_check_string_result == (PRINT_STRING_NON_CHARSET_FOUND |
| 1465 | | PRINT_STRING_UNSAFE_CHARSET_FOUND))) |
| 1466 | return; |
| 1467 | for (val = interval->plist; CONSP (val) && ! EQ (XCAR (val), Qcharset); |
| 1468 | val = XCDR (XCDR (val))); |
| 1469 | if (! CONSP (val)) |
| 1470 | { |
| 1471 | print_check_string_result |= PRINT_STRING_NON_CHARSET_FOUND; |
| 1472 | return; |
| 1473 | } |
| 1474 | if (! (print_check_string_result & PRINT_STRING_NON_CHARSET_FOUND)) |
| 1475 | { |
| 1476 | if (! EQ (val, interval->plist) |
| 1477 | || CONSP (XCDR (XCDR (val)))) |
| 1478 | print_check_string_result |= PRINT_STRING_NON_CHARSET_FOUND; |
| 1479 | } |
| 1480 | if (NILP (Vprint_charset_text_property) |
| 1481 | || ! (print_check_string_result & PRINT_STRING_UNSAFE_CHARSET_FOUND)) |
| 1482 | { |
| 1483 | int i, c; |
| 1484 | int charpos = interval->position; |
| 1485 | int bytepos = string_char_to_byte (string, charpos); |
| 1486 | Lisp_Object charset; |
| 1487 | |
| 1488 | charset = XCAR (XCDR (val)); |
| 1489 | for (i = 0; i < LENGTH (interval); i++) |
| 1490 | { |
| 1491 | FETCH_STRING_CHAR_ADVANCE (c, string, charpos, bytepos); |
| 1492 | if (! ASCII_CHAR_P (c) |
| 1493 | && ! EQ (CHARSET_NAME (CHAR_CHARSET (c)), charset)) |
| 1494 | { |
| 1495 | print_check_string_result |= PRINT_STRING_UNSAFE_CHARSET_FOUND; |
| 1496 | break; |
| 1497 | } |
| 1498 | } |
| 1499 | } |
| 1500 | } |
| 1501 | |
| 1502 | /* The value is (charset . nil). */ |
| 1503 | static Lisp_Object print_prune_charset_plist; |
| 1504 | |
| 1505 | static Lisp_Object |
| 1506 | print_prune_string_charset (string) |
| 1507 | Lisp_Object string; |
| 1508 | { |
| 1509 | print_check_string_result = 0; |
| 1510 | traverse_intervals (STRING_INTERVALS (string), 0, |
| 1511 | print_check_string_charset_prop, string); |
| 1512 | if (! (print_check_string_result & PRINT_STRING_UNSAFE_CHARSET_FOUND)) |
| 1513 | { |
| 1514 | string = Fcopy_sequence (string); |
| 1515 | if (print_check_string_result & PRINT_STRING_NON_CHARSET_FOUND) |
| 1516 | { |
| 1517 | if (NILP (print_prune_charset_plist)) |
| 1518 | print_prune_charset_plist = Fcons (Qcharset, Qnil); |
| 1519 | Fremove_text_properties (make_number (0), |
| 1520 | make_number (SCHARS (string)), |
| 1521 | print_prune_charset_plist, string); |
| 1522 | } |
| 1523 | else |
| 1524 | Fset_text_properties (make_number (0), make_number (SCHARS (string)), |
| 1525 | Qnil, string); |
| 1526 | } |
| 1527 | return string; |
| 1528 | } |
| 1529 | |
| 1530 | static void |
| 1531 | print_object (obj, printcharfun, escapeflag) |
| 1532 | Lisp_Object obj; |
| 1533 | register Lisp_Object printcharfun; |
| 1534 | int escapeflag; |
| 1535 | { |
| 1536 | char buf[40]; |
| 1537 | |
| 1538 | QUIT; |
| 1539 | |
| 1540 | /* See similar code in print_preprocess. */ |
| 1541 | if (print_depth >= PRINT_CIRCLE) |
| 1542 | error ("Apparently circular structure being printed"); |
| 1543 | |
| 1544 | /* Detect circularities and truncate them. */ |
| 1545 | if (STRINGP (obj) || CONSP (obj) || VECTORP (obj) |
| 1546 | || COMPILEDP (obj) || CHAR_TABLE_P (obj) || SUB_CHAR_TABLE_P (obj) |
| 1547 | || HASH_TABLE_P (obj) |
| 1548 | || (! NILP (Vprint_gensym) |
| 1549 | && SYMBOLP (obj) |
| 1550 | && !SYMBOL_INTERNED_P (obj))) |
| 1551 | { |
| 1552 | if (NILP (Vprint_circle) && NILP (Vprint_gensym)) |
| 1553 | { |
| 1554 | /* Simple but incomplete way. */ |
| 1555 | int i; |
| 1556 | for (i = 0; i < print_depth; i++) |
| 1557 | if (EQ (obj, being_printed[i])) |
| 1558 | { |
| 1559 | sprintf (buf, "#%d", i); |
| 1560 | strout (buf, -1, -1, printcharfun, 0); |
| 1561 | return; |
| 1562 | } |
| 1563 | being_printed[print_depth] = obj; |
| 1564 | } |
| 1565 | else |
| 1566 | { |
| 1567 | /* With the print-circle feature. */ |
| 1568 | int i; |
| 1569 | for (i = 0; i < print_number_index; i++) |
| 1570 | if (EQ (PRINT_NUMBER_OBJECT (Vprint_number_table, i), obj)) |
| 1571 | { |
| 1572 | if (NILP (PRINT_NUMBER_STATUS (Vprint_number_table, i))) |
| 1573 | { |
| 1574 | /* Add a prefix #n= if OBJ has not yet been printed; |
| 1575 | that is, its status field is nil. */ |
| 1576 | sprintf (buf, "#%d=", i + 1); |
| 1577 | strout (buf, -1, -1, printcharfun, 0); |
| 1578 | /* OBJ is going to be printed. Set the status to t. */ |
| 1579 | PRINT_NUMBER_STATUS (Vprint_number_table, i) = Qt; |
| 1580 | break; |
| 1581 | } |
| 1582 | else |
| 1583 | { |
| 1584 | /* Just print #n# if OBJ has already been printed. */ |
| 1585 | sprintf (buf, "#%d#", i + 1); |
| 1586 | strout (buf, -1, -1, printcharfun, 0); |
| 1587 | return; |
| 1588 | } |
| 1589 | } |
| 1590 | } |
| 1591 | } |
| 1592 | |
| 1593 | print_depth++; |
| 1594 | |
| 1595 | switch (XTYPE (obj)) |
| 1596 | { |
| 1597 | case_Lisp_Int: |
| 1598 | if (sizeof (int) == sizeof (EMACS_INT)) |
| 1599 | sprintf (buf, "%d", (int) XINT (obj)); |
| 1600 | else if (sizeof (long) == sizeof (EMACS_INT)) |
| 1601 | sprintf (buf, "%ld", (long) XINT (obj)); |
| 1602 | else |
| 1603 | abort (); |
| 1604 | strout (buf, -1, -1, printcharfun, 0); |
| 1605 | break; |
| 1606 | |
| 1607 | case Lisp_Float: |
| 1608 | { |
| 1609 | char pigbuf[350]; /* see comments in float_to_string */ |
| 1610 | |
| 1611 | float_to_string (pigbuf, XFLOAT_DATA (obj)); |
| 1612 | strout (pigbuf, -1, -1, printcharfun, 0); |
| 1613 | } |
| 1614 | break; |
| 1615 | |
| 1616 | case Lisp_String: |
| 1617 | if (!escapeflag) |
| 1618 | print_string (obj, printcharfun); |
| 1619 | else |
| 1620 | { |
| 1621 | register int i, i_byte; |
| 1622 | struct gcpro gcpro1; |
| 1623 | unsigned char *str; |
| 1624 | int size_byte; |
| 1625 | /* 1 means we must ensure that the next character we output |
| 1626 | cannot be taken as part of a hex character escape. */ |
| 1627 | int need_nonhex = 0; |
| 1628 | int multibyte = STRING_MULTIBYTE (obj); |
| 1629 | |
| 1630 | GCPRO1 (obj); |
| 1631 | |
| 1632 | if (! EQ (Vprint_charset_text_property, Qt)) |
| 1633 | obj = print_prune_string_charset (obj); |
| 1634 | |
| 1635 | if (!NULL_INTERVAL_P (STRING_INTERVALS (obj))) |
| 1636 | { |
| 1637 | PRINTCHAR ('#'); |
| 1638 | PRINTCHAR ('('); |
| 1639 | } |
| 1640 | |
| 1641 | PRINTCHAR ('\"'); |
| 1642 | str = SDATA (obj); |
| 1643 | size_byte = SBYTES (obj); |
| 1644 | |
| 1645 | for (i = 0, i_byte = 0; i_byte < size_byte;) |
| 1646 | { |
| 1647 | /* Here, we must convert each multi-byte form to the |
| 1648 | corresponding character code before handing it to PRINTCHAR. */ |
| 1649 | int len; |
| 1650 | int c; |
| 1651 | |
| 1652 | if (multibyte) |
| 1653 | { |
| 1654 | c = STRING_CHAR_AND_LENGTH (str + i_byte, len); |
| 1655 | i_byte += len; |
| 1656 | } |
| 1657 | else |
| 1658 | c = str[i_byte++]; |
| 1659 | |
| 1660 | QUIT; |
| 1661 | |
| 1662 | if (c == '\n' && print_escape_newlines) |
| 1663 | { |
| 1664 | PRINTCHAR ('\\'); |
| 1665 | PRINTCHAR ('n'); |
| 1666 | } |
| 1667 | else if (c == '\f' && print_escape_newlines) |
| 1668 | { |
| 1669 | PRINTCHAR ('\\'); |
| 1670 | PRINTCHAR ('f'); |
| 1671 | } |
| 1672 | else if (multibyte |
| 1673 | && (CHAR_BYTE8_P (c) |
| 1674 | || (! ASCII_CHAR_P (c) && print_escape_multibyte))) |
| 1675 | { |
| 1676 | /* When multibyte is disabled, |
| 1677 | print multibyte string chars using hex escapes. |
| 1678 | For a char code that could be in a unibyte string, |
| 1679 | when found in a multibyte string, always use a hex escape |
| 1680 | so it reads back as multibyte. */ |
| 1681 | unsigned char outbuf[50]; |
| 1682 | |
| 1683 | if (CHAR_BYTE8_P (c)) |
| 1684 | sprintf (outbuf, "\\%03o", CHAR_TO_BYTE8 (c)); |
| 1685 | else |
| 1686 | { |
| 1687 | sprintf (outbuf, "\\x%04x", c); |
| 1688 | need_nonhex = 1; |
| 1689 | } |
| 1690 | strout (outbuf, -1, -1, printcharfun, 0); |
| 1691 | } |
| 1692 | else if (! multibyte |
| 1693 | && SINGLE_BYTE_CHAR_P (c) && ! ASCII_BYTE_P (c) |
| 1694 | && print_escape_nonascii) |
| 1695 | { |
| 1696 | /* When printing in a multibyte buffer |
| 1697 | or when explicitly requested, |
| 1698 | print single-byte non-ASCII string chars |
| 1699 | using octal escapes. */ |
| 1700 | unsigned char outbuf[5]; |
| 1701 | sprintf (outbuf, "\\%03o", c); |
| 1702 | strout (outbuf, -1, -1, printcharfun, 0); |
| 1703 | } |
| 1704 | else |
| 1705 | { |
| 1706 | /* If we just had a hex escape, and this character |
| 1707 | could be taken as part of it, |
| 1708 | output `\ ' to prevent that. */ |
| 1709 | if (need_nonhex) |
| 1710 | { |
| 1711 | need_nonhex = 0; |
| 1712 | if ((c >= 'a' && c <= 'f') |
| 1713 | || (c >= 'A' && c <= 'F') |
| 1714 | || (c >= '0' && c <= '9')) |
| 1715 | strout ("\\ ", -1, -1, printcharfun, 0); |
| 1716 | } |
| 1717 | |
| 1718 | if (c == '\"' || c == '\\') |
| 1719 | PRINTCHAR ('\\'); |
| 1720 | PRINTCHAR (c); |
| 1721 | } |
| 1722 | } |
| 1723 | PRINTCHAR ('\"'); |
| 1724 | |
| 1725 | if (!NULL_INTERVAL_P (STRING_INTERVALS (obj))) |
| 1726 | { |
| 1727 | traverse_intervals (STRING_INTERVALS (obj), |
| 1728 | 0, print_interval, printcharfun); |
| 1729 | PRINTCHAR (')'); |
| 1730 | } |
| 1731 | |
| 1732 | UNGCPRO; |
| 1733 | } |
| 1734 | break; |
| 1735 | |
| 1736 | case Lisp_Symbol: |
| 1737 | { |
| 1738 | register int confusing; |
| 1739 | register unsigned char *p = SDATA (SYMBOL_NAME (obj)); |
| 1740 | register unsigned char *end = p + SBYTES (SYMBOL_NAME (obj)); |
| 1741 | register int c; |
| 1742 | int i, i_byte, size_byte; |
| 1743 | Lisp_Object name; |
| 1744 | |
| 1745 | name = SYMBOL_NAME (obj); |
| 1746 | |
| 1747 | if (p != end && (*p == '-' || *p == '+')) p++; |
| 1748 | if (p == end) |
| 1749 | confusing = 0; |
| 1750 | /* If symbol name begins with a digit, and ends with a digit, |
| 1751 | and contains nothing but digits and `e', it could be treated |
| 1752 | as a number. So set CONFUSING. |
| 1753 | |
| 1754 | Symbols that contain periods could also be taken as numbers, |
| 1755 | but periods are always escaped, so we don't have to worry |
| 1756 | about them here. */ |
| 1757 | else if (*p >= '0' && *p <= '9' |
| 1758 | && end[-1] >= '0' && end[-1] <= '9') |
| 1759 | { |
| 1760 | while (p != end && ((*p >= '0' && *p <= '9') |
| 1761 | /* Needed for \2e10. */ |
| 1762 | || *p == 'e' || *p == 'E')) |
| 1763 | p++; |
| 1764 | confusing = (end == p); |
| 1765 | } |
| 1766 | else |
| 1767 | confusing = 0; |
| 1768 | |
| 1769 | if (! NILP (Vprint_gensym) && !SYMBOL_INTERNED_P (obj)) |
| 1770 | { |
| 1771 | PRINTCHAR ('#'); |
| 1772 | PRINTCHAR (':'); |
| 1773 | } |
| 1774 | |
| 1775 | size_byte = SBYTES (name); |
| 1776 | |
| 1777 | for (i = 0, i_byte = 0; i_byte < size_byte;) |
| 1778 | { |
| 1779 | /* Here, we must convert each multi-byte form to the |
| 1780 | corresponding character code before handing it to PRINTCHAR. */ |
| 1781 | FETCH_STRING_CHAR_ADVANCE (c, name, i, i_byte); |
| 1782 | QUIT; |
| 1783 | |
| 1784 | if (escapeflag) |
| 1785 | { |
| 1786 | if (c == '\"' || c == '\\' || c == '\'' |
| 1787 | || c == ';' || c == '#' || c == '(' || c == ')' |
| 1788 | || c == ',' || c =='.' || c == '`' |
| 1789 | || c == '[' || c == ']' || c == '?' || c <= 040 |
| 1790 | || confusing) |
| 1791 | PRINTCHAR ('\\'), confusing = 0; |
| 1792 | } |
| 1793 | PRINTCHAR (c); |
| 1794 | } |
| 1795 | } |
| 1796 | break; |
| 1797 | |
| 1798 | case Lisp_Cons: |
| 1799 | /* If deeper than spec'd depth, print placeholder. */ |
| 1800 | if (INTEGERP (Vprint_level) |
| 1801 | && print_depth > XINT (Vprint_level)) |
| 1802 | strout ("...", -1, -1, printcharfun, 0); |
| 1803 | else if (print_quoted && CONSP (XCDR (obj)) && NILP (XCDR (XCDR (obj))) |
| 1804 | && (EQ (XCAR (obj), Qquote))) |
| 1805 | { |
| 1806 | PRINTCHAR ('\''); |
| 1807 | print_object (XCAR (XCDR (obj)), printcharfun, escapeflag); |
| 1808 | } |
| 1809 | else if (print_quoted && CONSP (XCDR (obj)) && NILP (XCDR (XCDR (obj))) |
| 1810 | && (EQ (XCAR (obj), Qfunction))) |
| 1811 | { |
| 1812 | PRINTCHAR ('#'); |
| 1813 | PRINTCHAR ('\''); |
| 1814 | print_object (XCAR (XCDR (obj)), printcharfun, escapeflag); |
| 1815 | } |
| 1816 | else if (print_quoted && CONSP (XCDR (obj)) && NILP (XCDR (XCDR (obj))) |
| 1817 | && ((EQ (XCAR (obj), Qbackquote)))) |
| 1818 | { |
| 1819 | print_object (XCAR (obj), printcharfun, 0); |
| 1820 | new_backquote_output++; |
| 1821 | print_object (XCAR (XCDR (obj)), printcharfun, escapeflag); |
| 1822 | new_backquote_output--; |
| 1823 | } |
| 1824 | else if (print_quoted && CONSP (XCDR (obj)) && NILP (XCDR (XCDR (obj))) |
| 1825 | && new_backquote_output |
| 1826 | && ((EQ (XCAR (obj), Qbackquote) |
| 1827 | || EQ (XCAR (obj), Qcomma) |
| 1828 | || EQ (XCAR (obj), Qcomma_at) |
| 1829 | || EQ (XCAR (obj), Qcomma_dot)))) |
| 1830 | { |
| 1831 | print_object (XCAR (obj), printcharfun, 0); |
| 1832 | new_backquote_output--; |
| 1833 | print_object (XCAR (XCDR (obj)), printcharfun, escapeflag); |
| 1834 | new_backquote_output++; |
| 1835 | } |
| 1836 | else |
| 1837 | { |
| 1838 | PRINTCHAR ('('); |
| 1839 | |
| 1840 | /* If the first element is a backquote form, |
| 1841 | print it old-style so it won't be misunderstood. */ |
| 1842 | if (print_quoted && CONSP (XCAR (obj)) |
| 1843 | && CONSP (XCDR (XCAR (obj))) |
| 1844 | && NILP (XCDR (XCDR (XCAR (obj)))) |
| 1845 | && EQ (XCAR (XCAR (obj)), Qbackquote)) |
| 1846 | { |
| 1847 | Lisp_Object tem; |
| 1848 | tem = XCAR (obj); |
| 1849 | PRINTCHAR ('('); |
| 1850 | |
| 1851 | print_object (Qbackquote, printcharfun, 0); |
| 1852 | PRINTCHAR (' '); |
| 1853 | |
| 1854 | print_object (XCAR (XCDR (tem)), printcharfun, 0); |
| 1855 | PRINTCHAR (')'); |
| 1856 | |
| 1857 | obj = XCDR (obj); |
| 1858 | } |
| 1859 | |
| 1860 | { |
| 1861 | int print_length, i; |
| 1862 | Lisp_Object halftail = obj; |
| 1863 | |
| 1864 | /* Negative values of print-length are invalid in CL. |
| 1865 | Treat them like nil, as CMUCL does. */ |
| 1866 | if (NATNUMP (Vprint_length)) |
| 1867 | print_length = XFASTINT (Vprint_length); |
| 1868 | else |
| 1869 | print_length = 0; |
| 1870 | |
| 1871 | i = 0; |
| 1872 | while (CONSP (obj)) |
| 1873 | { |
| 1874 | /* Detect circular list. */ |
| 1875 | if (NILP (Vprint_circle)) |
| 1876 | { |
| 1877 | /* Simple but imcomplete way. */ |
| 1878 | if (i != 0 && EQ (obj, halftail)) |
| 1879 | { |
| 1880 | sprintf (buf, " . #%d", i / 2); |
| 1881 | strout (buf, -1, -1, printcharfun, 0); |
| 1882 | goto end_of_list; |
| 1883 | } |
| 1884 | } |
| 1885 | else |
| 1886 | { |
| 1887 | /* With the print-circle feature. */ |
| 1888 | if (i != 0) |
| 1889 | { |
| 1890 | int i; |
| 1891 | for (i = 0; i < print_number_index; i++) |
| 1892 | if (EQ (PRINT_NUMBER_OBJECT (Vprint_number_table, i), |
| 1893 | obj)) |
| 1894 | { |
| 1895 | if (NILP (PRINT_NUMBER_STATUS (Vprint_number_table, i))) |
| 1896 | { |
| 1897 | strout (" . ", 3, 3, printcharfun, 0); |
| 1898 | print_object (obj, printcharfun, escapeflag); |
| 1899 | } |
| 1900 | else |
| 1901 | { |
| 1902 | sprintf (buf, " . #%d#", i + 1); |
| 1903 | strout (buf, -1, -1, printcharfun, 0); |
| 1904 | } |
| 1905 | goto end_of_list; |
| 1906 | } |
| 1907 | } |
| 1908 | } |
| 1909 | |
| 1910 | if (i++) |
| 1911 | PRINTCHAR (' '); |
| 1912 | |
| 1913 | if (print_length && i > print_length) |
| 1914 | { |
| 1915 | strout ("...", 3, 3, printcharfun, 0); |
| 1916 | goto end_of_list; |
| 1917 | } |
| 1918 | |
| 1919 | print_object (XCAR (obj), printcharfun, escapeflag); |
| 1920 | |
| 1921 | obj = XCDR (obj); |
| 1922 | if (!(i & 1)) |
| 1923 | halftail = XCDR (halftail); |
| 1924 | } |
| 1925 | } |
| 1926 | |
| 1927 | /* OBJ non-nil here means it's the end of a dotted list. */ |
| 1928 | if (!NILP (obj)) |
| 1929 | { |
| 1930 | strout (" . ", 3, 3, printcharfun, 0); |
| 1931 | print_object (obj, printcharfun, escapeflag); |
| 1932 | } |
| 1933 | |
| 1934 | end_of_list: |
| 1935 | PRINTCHAR (')'); |
| 1936 | } |
| 1937 | break; |
| 1938 | |
| 1939 | case Lisp_Vectorlike: |
| 1940 | if (PROCESSP (obj)) |
| 1941 | { |
| 1942 | if (escapeflag) |
| 1943 | { |
| 1944 | strout ("#<process ", -1, -1, printcharfun, 0); |
| 1945 | print_string (XPROCESS (obj)->name, printcharfun); |
| 1946 | PRINTCHAR ('>'); |
| 1947 | } |
| 1948 | else |
| 1949 | print_string (XPROCESS (obj)->name, printcharfun); |
| 1950 | } |
| 1951 | else if (BOOL_VECTOR_P (obj)) |
| 1952 | { |
| 1953 | register int i; |
| 1954 | register unsigned char c; |
| 1955 | struct gcpro gcpro1; |
| 1956 | int size_in_chars |
| 1957 | = ((XBOOL_VECTOR (obj)->size + BOOL_VECTOR_BITS_PER_CHAR - 1) |
| 1958 | / BOOL_VECTOR_BITS_PER_CHAR); |
| 1959 | |
| 1960 | GCPRO1 (obj); |
| 1961 | |
| 1962 | PRINTCHAR ('#'); |
| 1963 | PRINTCHAR ('&'); |
| 1964 | sprintf (buf, "%ld", (long) XBOOL_VECTOR (obj)->size); |
| 1965 | strout (buf, -1, -1, printcharfun, 0); |
| 1966 | PRINTCHAR ('\"'); |
| 1967 | |
| 1968 | /* Don't print more characters than the specified maximum. |
| 1969 | Negative values of print-length are invalid. Treat them |
| 1970 | like a print-length of nil. */ |
| 1971 | if (NATNUMP (Vprint_length) |
| 1972 | && XFASTINT (Vprint_length) < size_in_chars) |
| 1973 | size_in_chars = XFASTINT (Vprint_length); |
| 1974 | |
| 1975 | for (i = 0; i < size_in_chars; i++) |
| 1976 | { |
| 1977 | QUIT; |
| 1978 | c = XBOOL_VECTOR (obj)->data[i]; |
| 1979 | if (c == '\n' && print_escape_newlines) |
| 1980 | { |
| 1981 | PRINTCHAR ('\\'); |
| 1982 | PRINTCHAR ('n'); |
| 1983 | } |
| 1984 | else if (c == '\f' && print_escape_newlines) |
| 1985 | { |
| 1986 | PRINTCHAR ('\\'); |
| 1987 | PRINTCHAR ('f'); |
| 1988 | } |
| 1989 | else if (c > '\177') |
| 1990 | { |
| 1991 | /* Use octal escapes to avoid encoding issues. */ |
| 1992 | PRINTCHAR ('\\'); |
| 1993 | PRINTCHAR ('0' + ((c >> 6) & 3)); |
| 1994 | PRINTCHAR ('0' + ((c >> 3) & 7)); |
| 1995 | PRINTCHAR ('0' + (c & 7)); |
| 1996 | } |
| 1997 | else |
| 1998 | { |
| 1999 | if (c == '\"' || c == '\\') |
| 2000 | PRINTCHAR ('\\'); |
| 2001 | PRINTCHAR (c); |
| 2002 | } |
| 2003 | } |
| 2004 | PRINTCHAR ('\"'); |
| 2005 | |
| 2006 | UNGCPRO; |
| 2007 | } |
| 2008 | else if (SUBRP (obj)) |
| 2009 | { |
| 2010 | strout ("#<subr ", -1, -1, printcharfun, 0); |
| 2011 | strout (XSUBR (obj)->symbol_name, -1, -1, printcharfun, 0); |
| 2012 | PRINTCHAR ('>'); |
| 2013 | } |
| 2014 | else if (WINDOWP (obj)) |
| 2015 | { |
| 2016 | strout ("#<window ", -1, -1, printcharfun, 0); |
| 2017 | sprintf (buf, "%ld", (long) XFASTINT (XWINDOW (obj)->sequence_number)); |
| 2018 | strout (buf, -1, -1, printcharfun, 0); |
| 2019 | if (!NILP (XWINDOW (obj)->buffer)) |
| 2020 | { |
| 2021 | strout (" on ", -1, -1, printcharfun, 0); |
| 2022 | print_string (XBUFFER (XWINDOW (obj)->buffer)->name, printcharfun); |
| 2023 | } |
| 2024 | PRINTCHAR ('>'); |
| 2025 | } |
| 2026 | else if (TERMINALP (obj)) |
| 2027 | { |
| 2028 | struct terminal *t = XTERMINAL (obj); |
| 2029 | strout ("#<terminal ", -1, -1, printcharfun, 0); |
| 2030 | sprintf (buf, "%d", t->id); |
| 2031 | strout (buf, -1, -1, printcharfun, 0); |
| 2032 | if (t->name) |
| 2033 | { |
| 2034 | strout (" on ", -1, -1, printcharfun, 0); |
| 2035 | strout (t->name, -1, -1, printcharfun, 0); |
| 2036 | } |
| 2037 | PRINTCHAR ('>'); |
| 2038 | } |
| 2039 | else if (HASH_TABLE_P (obj)) |
| 2040 | { |
| 2041 | struct Lisp_Hash_Table *h = XHASH_TABLE (obj); |
| 2042 | int i, real_size, size; |
| 2043 | #if 0 |
| 2044 | strout ("#<hash-table", -1, -1, printcharfun, 0); |
| 2045 | if (SYMBOLP (h->test)) |
| 2046 | { |
| 2047 | PRINTCHAR (' '); |
| 2048 | PRINTCHAR ('\''); |
| 2049 | strout (SDATA (SYMBOL_NAME (h->test)), -1, -1, printcharfun, 0); |
| 2050 | PRINTCHAR (' '); |
| 2051 | strout (SDATA (SYMBOL_NAME (h->weak)), -1, -1, printcharfun, 0); |
| 2052 | PRINTCHAR (' '); |
| 2053 | sprintf (buf, "%ld/%ld", (long) h->count, |
| 2054 | (long) XVECTOR (h->next)->size); |
| 2055 | strout (buf, -1, -1, printcharfun, 0); |
| 2056 | } |
| 2057 | sprintf (buf, " 0x%lx", (unsigned long) h); |
| 2058 | strout (buf, -1, -1, printcharfun, 0); |
| 2059 | PRINTCHAR ('>'); |
| 2060 | #endif |
| 2061 | /* Implement a readable output, e.g.: |
| 2062 | #s(hash-table size 2 test equal data (k1 v1 k2 v2)) */ |
| 2063 | /* Always print the size. */ |
| 2064 | sprintf (buf, "#s(hash-table size %ld", |
| 2065 | (long) XVECTOR (h->next)->size); |
| 2066 | strout (buf, -1, -1, printcharfun, 0); |
| 2067 | |
| 2068 | if (!NILP (h->test)) |
| 2069 | { |
| 2070 | strout (" test ", -1, -1, printcharfun, 0); |
| 2071 | print_object (h->test, printcharfun, 0); |
| 2072 | } |
| 2073 | |
| 2074 | if (!NILP (h->weak)) |
| 2075 | { |
| 2076 | strout (" weakness ", -1, -1, printcharfun, 0); |
| 2077 | print_object (h->weak, printcharfun, 0); |
| 2078 | } |
| 2079 | |
| 2080 | if (!NILP (h->rehash_size)) |
| 2081 | { |
| 2082 | strout (" rehash-size ", -1, -1, printcharfun, 0); |
| 2083 | print_object (h->rehash_size, printcharfun, 0); |
| 2084 | } |
| 2085 | |
| 2086 | if (!NILP (h->rehash_threshold)) |
| 2087 | { |
| 2088 | strout (" rehash-threshold ", -1, -1, printcharfun, 0); |
| 2089 | print_object (h->rehash_threshold, printcharfun, 0); |
| 2090 | } |
| 2091 | |
| 2092 | strout (" data ", -1, -1, printcharfun, 0); |
| 2093 | |
| 2094 | /* Print the data here as a plist. */ |
| 2095 | real_size = HASH_TABLE_SIZE (h); |
| 2096 | size = real_size; |
| 2097 | |
| 2098 | /* Don't print more elements than the specified maximum. */ |
| 2099 | if (NATNUMP (Vprint_length) |
| 2100 | && XFASTINT (Vprint_length) < size) |
| 2101 | size = XFASTINT (Vprint_length); |
| 2102 | |
| 2103 | PRINTCHAR ('('); |
| 2104 | for (i = 0; i < size; i++) |
| 2105 | if (!NILP (HASH_HASH (h, i))) |
| 2106 | { |
| 2107 | if (i) PRINTCHAR (' '); |
| 2108 | print_object (HASH_KEY (h, i), printcharfun, 1); |
| 2109 | PRINTCHAR (' '); |
| 2110 | print_object (HASH_VALUE (h, i), printcharfun, 1); |
| 2111 | } |
| 2112 | |
| 2113 | if (size < real_size) |
| 2114 | strout (" ...", 4, 4, printcharfun, 0); |
| 2115 | |
| 2116 | PRINTCHAR (')'); |
| 2117 | PRINTCHAR (')'); |
| 2118 | |
| 2119 | } |
| 2120 | else if (BUFFERP (obj)) |
| 2121 | { |
| 2122 | if (NILP (XBUFFER (obj)->name)) |
| 2123 | strout ("#<killed buffer>", -1, -1, printcharfun, 0); |
| 2124 | else if (escapeflag) |
| 2125 | { |
| 2126 | strout ("#<buffer ", -1, -1, printcharfun, 0); |
| 2127 | print_string (XBUFFER (obj)->name, printcharfun); |
| 2128 | PRINTCHAR ('>'); |
| 2129 | } |
| 2130 | else |
| 2131 | print_string (XBUFFER (obj)->name, printcharfun); |
| 2132 | } |
| 2133 | else if (WINDOW_CONFIGURATIONP (obj)) |
| 2134 | { |
| 2135 | strout ("#<window-configuration>", -1, -1, printcharfun, 0); |
| 2136 | } |
| 2137 | else if (FRAMEP (obj)) |
| 2138 | { |
| 2139 | strout ((FRAME_LIVE_P (XFRAME (obj)) |
| 2140 | ? "#<frame " : "#<dead frame "), |
| 2141 | -1, -1, printcharfun, 0); |
| 2142 | print_string (XFRAME (obj)->name, printcharfun); |
| 2143 | sprintf (buf, " 0x%lx", (unsigned long) (XFRAME (obj))); |
| 2144 | strout (buf, -1, -1, printcharfun, 0); |
| 2145 | PRINTCHAR ('>'); |
| 2146 | } |
| 2147 | else if (FONTP (obj)) |
| 2148 | { |
| 2149 | EMACS_INT i; |
| 2150 | |
| 2151 | if (! FONT_OBJECT_P (obj)) |
| 2152 | { |
| 2153 | if (FONT_SPEC_P (obj)) |
| 2154 | strout ("#<font-spec", -1, -1, printcharfun, 0); |
| 2155 | else |
| 2156 | strout ("#<font-entity", -1, -1, printcharfun, 0); |
| 2157 | for (i = 0; i < FONT_SPEC_MAX; i++) |
| 2158 | { |
| 2159 | PRINTCHAR (' '); |
| 2160 | if (i < FONT_WEIGHT_INDEX || i > FONT_WIDTH_INDEX) |
| 2161 | print_object (AREF (obj, i), printcharfun, escapeflag); |
| 2162 | else |
| 2163 | print_object (font_style_symbolic (obj, i, 0), |
| 2164 | printcharfun, escapeflag); |
| 2165 | } |
| 2166 | } |
| 2167 | else |
| 2168 | { |
| 2169 | strout ("#<font-object ", -1, -1, printcharfun, 0); |
| 2170 | print_object (AREF (obj, FONT_NAME_INDEX), printcharfun, |
| 2171 | escapeflag); |
| 2172 | } |
| 2173 | PRINTCHAR ('>'); |
| 2174 | } |
| 2175 | else |
| 2176 | { |
| 2177 | EMACS_INT size = XVECTOR (obj)->size; |
| 2178 | if (COMPILEDP (obj)) |
| 2179 | { |
| 2180 | PRINTCHAR ('#'); |
| 2181 | size &= PSEUDOVECTOR_SIZE_MASK; |
| 2182 | } |
| 2183 | if (CHAR_TABLE_P (obj) || SUB_CHAR_TABLE_P (obj)) |
| 2184 | { |
| 2185 | /* We print a char-table as if it were a vector, |
| 2186 | lumping the parent and default slots in with the |
| 2187 | character slots. But we add #^ as a prefix. */ |
| 2188 | |
| 2189 | /* Make each lowest sub_char_table start a new line. |
| 2190 | Otherwise we'll make a line extremely long, which |
| 2191 | results in slow redisplay. */ |
| 2192 | if (SUB_CHAR_TABLE_P (obj) |
| 2193 | && XINT (XSUB_CHAR_TABLE (obj)->depth) == 3) |
| 2194 | PRINTCHAR ('\n'); |
| 2195 | PRINTCHAR ('#'); |
| 2196 | PRINTCHAR ('^'); |
| 2197 | if (SUB_CHAR_TABLE_P (obj)) |
| 2198 | PRINTCHAR ('^'); |
| 2199 | size &= PSEUDOVECTOR_SIZE_MASK; |
| 2200 | } |
| 2201 | if (size & PSEUDOVECTOR_FLAG) |
| 2202 | goto badtype; |
| 2203 | |
| 2204 | PRINTCHAR ('['); |
| 2205 | { |
| 2206 | register int i; |
| 2207 | register Lisp_Object tem; |
| 2208 | int real_size = size; |
| 2209 | |
| 2210 | /* Don't print more elements than the specified maximum. */ |
| 2211 | if (NATNUMP (Vprint_length) |
| 2212 | && XFASTINT (Vprint_length) < size) |
| 2213 | size = XFASTINT (Vprint_length); |
| 2214 | |
| 2215 | for (i = 0; i < size; i++) |
| 2216 | { |
| 2217 | if (i) PRINTCHAR (' '); |
| 2218 | tem = XVECTOR (obj)->contents[i]; |
| 2219 | print_object (tem, printcharfun, escapeflag); |
| 2220 | } |
| 2221 | if (size < real_size) |
| 2222 | strout (" ...", 4, 4, printcharfun, 0); |
| 2223 | } |
| 2224 | PRINTCHAR (']'); |
| 2225 | } |
| 2226 | break; |
| 2227 | |
| 2228 | case Lisp_Misc: |
| 2229 | switch (XMISCTYPE (obj)) |
| 2230 | { |
| 2231 | case Lisp_Misc_Marker: |
| 2232 | strout ("#<marker ", -1, -1, printcharfun, 0); |
| 2233 | /* Do you think this is necessary? */ |
| 2234 | if (XMARKER (obj)->insertion_type != 0) |
| 2235 | strout ("(moves after insertion) ", -1, -1, printcharfun, 0); |
| 2236 | if (! XMARKER (obj)->buffer) |
| 2237 | strout ("in no buffer", -1, -1, printcharfun, 0); |
| 2238 | else |
| 2239 | { |
| 2240 | sprintf (buf, "at %d", marker_position (obj)); |
| 2241 | strout (buf, -1, -1, printcharfun, 0); |
| 2242 | strout (" in ", -1, -1, printcharfun, 0); |
| 2243 | print_string (XMARKER (obj)->buffer->name, printcharfun); |
| 2244 | } |
| 2245 | PRINTCHAR ('>'); |
| 2246 | break; |
| 2247 | |
| 2248 | case Lisp_Misc_Overlay: |
| 2249 | strout ("#<overlay ", -1, -1, printcharfun, 0); |
| 2250 | if (! XMARKER (OVERLAY_START (obj))->buffer) |
| 2251 | strout ("in no buffer", -1, -1, printcharfun, 0); |
| 2252 | else |
| 2253 | { |
| 2254 | sprintf (buf, "from %d to %d in ", |
| 2255 | marker_position (OVERLAY_START (obj)), |
| 2256 | marker_position (OVERLAY_END (obj))); |
| 2257 | strout (buf, -1, -1, printcharfun, 0); |
| 2258 | print_string (XMARKER (OVERLAY_START (obj))->buffer->name, |
| 2259 | printcharfun); |
| 2260 | } |
| 2261 | PRINTCHAR ('>'); |
| 2262 | break; |
| 2263 | |
| 2264 | /* Remaining cases shouldn't happen in normal usage, but let's print |
| 2265 | them anyway for the benefit of the debugger. */ |
| 2266 | case Lisp_Misc_Free: |
| 2267 | strout ("#<misc free cell>", -1, -1, printcharfun, 0); |
| 2268 | break; |
| 2269 | |
| 2270 | case Lisp_Misc_Save_Value: |
| 2271 | strout ("#<save_value ", -1, -1, printcharfun, 0); |
| 2272 | sprintf(buf, "ptr=0x%08lx int=%d", |
| 2273 | (unsigned long) XSAVE_VALUE (obj)->pointer, |
| 2274 | XSAVE_VALUE (obj)->integer); |
| 2275 | strout (buf, -1, -1, printcharfun, 0); |
| 2276 | PRINTCHAR ('>'); |
| 2277 | break; |
| 2278 | |
| 2279 | default: |
| 2280 | goto badtype; |
| 2281 | } |
| 2282 | break; |
| 2283 | |
| 2284 | default: |
| 2285 | badtype: |
| 2286 | { |
| 2287 | /* We're in trouble if this happens! |
| 2288 | Probably should just abort () */ |
| 2289 | strout ("#<EMACS BUG: INVALID DATATYPE ", -1, -1, printcharfun, 0); |
| 2290 | if (MISCP (obj)) |
| 2291 | sprintf (buf, "(MISC 0x%04x)", (int) XMISCTYPE (obj)); |
| 2292 | else if (VECTORLIKEP (obj)) |
| 2293 | sprintf (buf, "(PVEC 0x%08x)", (int) XVECTOR (obj)->size); |
| 2294 | else |
| 2295 | sprintf (buf, "(0x%02x)", (int) XTYPE (obj)); |
| 2296 | strout (buf, -1, -1, printcharfun, 0); |
| 2297 | strout (" Save your buffers immediately and please report this bug>", |
| 2298 | -1, -1, printcharfun, 0); |
| 2299 | } |
| 2300 | } |
| 2301 | |
| 2302 | print_depth--; |
| 2303 | } |
| 2304 | \f |
| 2305 | |
| 2306 | /* Print a description of INTERVAL using PRINTCHARFUN. |
| 2307 | This is part of printing a string that has text properties. */ |
| 2308 | |
| 2309 | void |
| 2310 | print_interval (interval, printcharfun) |
| 2311 | INTERVAL interval; |
| 2312 | Lisp_Object printcharfun; |
| 2313 | { |
| 2314 | if (NILP (interval->plist)) |
| 2315 | return; |
| 2316 | PRINTCHAR (' '); |
| 2317 | print_object (make_number (interval->position), printcharfun, 1); |
| 2318 | PRINTCHAR (' '); |
| 2319 | print_object (make_number (interval->position + LENGTH (interval)), |
| 2320 | printcharfun, 1); |
| 2321 | PRINTCHAR (' '); |
| 2322 | print_object (interval->plist, printcharfun, 1); |
| 2323 | } |
| 2324 | |
| 2325 | \f |
| 2326 | void |
| 2327 | syms_of_print () |
| 2328 | { |
| 2329 | Qtemp_buffer_setup_hook = intern_c_string ("temp-buffer-setup-hook"); |
| 2330 | staticpro (&Qtemp_buffer_setup_hook); |
| 2331 | |
| 2332 | DEFVAR_LISP ("standard-output", &Vstandard_output, |
| 2333 | doc: /* Output stream `print' uses by default for outputting a character. |
| 2334 | This may be any function of one argument. |
| 2335 | It may also be a buffer (output is inserted before point) |
| 2336 | or a marker (output is inserted and the marker is advanced) |
| 2337 | or the symbol t (output appears in the echo area). */); |
| 2338 | Vstandard_output = Qt; |
| 2339 | Qstandard_output = intern_c_string ("standard-output"); |
| 2340 | staticpro (&Qstandard_output); |
| 2341 | |
| 2342 | DEFVAR_LISP ("float-output-format", &Vfloat_output_format, |
| 2343 | doc: /* The format descriptor string used to print floats. |
| 2344 | This is a %-spec like those accepted by `printf' in C, |
| 2345 | but with some restrictions. It must start with the two characters `%.'. |
| 2346 | After that comes an integer precision specification, |
| 2347 | and then a letter which controls the format. |
| 2348 | The letters allowed are `e', `f' and `g'. |
| 2349 | Use `e' for exponential notation \"DIG.DIGITSeEXPT\" |
| 2350 | Use `f' for decimal point notation \"DIGITS.DIGITS\". |
| 2351 | Use `g' to choose the shorter of those two formats for the number at hand. |
| 2352 | The precision in any of these cases is the number of digits following |
| 2353 | the decimal point. With `f', a precision of 0 means to omit the |
| 2354 | decimal point. 0 is not allowed with `e' or `g'. |
| 2355 | |
| 2356 | A value of nil means to use the shortest notation |
| 2357 | that represents the number without losing information. */); |
| 2358 | Vfloat_output_format = Qnil; |
| 2359 | Qfloat_output_format = intern_c_string ("float-output-format"); |
| 2360 | staticpro (&Qfloat_output_format); |
| 2361 | |
| 2362 | DEFVAR_LISP ("print-length", &Vprint_length, |
| 2363 | doc: /* Maximum length of list to print before abbreviating. |
| 2364 | A value of nil means no limit. See also `eval-expression-print-length'. */); |
| 2365 | Vprint_length = Qnil; |
| 2366 | |
| 2367 | DEFVAR_LISP ("print-level", &Vprint_level, |
| 2368 | doc: /* Maximum depth of list nesting to print before abbreviating. |
| 2369 | A value of nil means no limit. See also `eval-expression-print-level'. */); |
| 2370 | Vprint_level = Qnil; |
| 2371 | |
| 2372 | DEFVAR_BOOL ("print-escape-newlines", &print_escape_newlines, |
| 2373 | doc: /* Non-nil means print newlines in strings as `\\n'. |
| 2374 | Also print formfeeds as `\\f'. */); |
| 2375 | print_escape_newlines = 0; |
| 2376 | |
| 2377 | DEFVAR_BOOL ("print-escape-nonascii", &print_escape_nonascii, |
| 2378 | doc: /* Non-nil means print unibyte non-ASCII chars in strings as \\OOO. |
| 2379 | \(OOO is the octal representation of the character code.) |
| 2380 | Only single-byte characters are affected, and only in `prin1'. |
| 2381 | When the output goes in a multibyte buffer, this feature is |
| 2382 | enabled regardless of the value of the variable. */); |
| 2383 | print_escape_nonascii = 0; |
| 2384 | |
| 2385 | DEFVAR_BOOL ("print-escape-multibyte", &print_escape_multibyte, |
| 2386 | doc: /* Non-nil means print multibyte characters in strings as \\xXXXX. |
| 2387 | \(XXXX is the hex representation of the character code.) |
| 2388 | This affects only `prin1'. */); |
| 2389 | print_escape_multibyte = 0; |
| 2390 | |
| 2391 | DEFVAR_BOOL ("print-quoted", &print_quoted, |
| 2392 | doc: /* Non-nil means print quoted forms with reader syntax. |
| 2393 | I.e., (quote foo) prints as 'foo, (function foo) as #'foo. */); |
| 2394 | print_quoted = 0; |
| 2395 | |
| 2396 | DEFVAR_LISP ("print-gensym", &Vprint_gensym, |
| 2397 | doc: /* Non-nil means print uninterned symbols so they will read as uninterned. |
| 2398 | I.e., the value of (make-symbol \"foobar\") prints as #:foobar. |
| 2399 | When the uninterned symbol appears within a recursive data structure, |
| 2400 | and the symbol appears more than once, in addition use the #N# and #N= |
| 2401 | constructs as needed, so that multiple references to the same symbol are |
| 2402 | shared once again when the text is read back. */); |
| 2403 | Vprint_gensym = Qnil; |
| 2404 | |
| 2405 | DEFVAR_LISP ("print-circle", &Vprint_circle, |
| 2406 | doc: /* *Non-nil means print recursive structures using #N= and #N# syntax. |
| 2407 | If nil, printing proceeds recursively and may lead to |
| 2408 | `max-lisp-eval-depth' being exceeded or an error may occur: |
| 2409 | \"Apparently circular structure being printed.\" Also see |
| 2410 | `print-length' and `print-level'. |
| 2411 | If non-nil, shared substructures anywhere in the structure are printed |
| 2412 | with `#N=' before the first occurrence (in the order of the print |
| 2413 | representation) and `#N#' in place of each subsequent occurrence, |
| 2414 | where N is a positive decimal integer. */); |
| 2415 | Vprint_circle = Qnil; |
| 2416 | |
| 2417 | DEFVAR_LISP ("print-continuous-numbering", &Vprint_continuous_numbering, |
| 2418 | doc: /* *Non-nil means number continuously across print calls. |
| 2419 | This affects the numbers printed for #N= labels and #M# references. |
| 2420 | See also `print-circle', `print-gensym', and `print-number-table'. |
| 2421 | This variable should not be set with `setq'; bind it with a `let' instead. */); |
| 2422 | Vprint_continuous_numbering = Qnil; |
| 2423 | |
| 2424 | DEFVAR_LISP ("print-number-table", &Vprint_number_table, |
| 2425 | doc: /* A vector used internally to produce `#N=' labels and `#N#' references. |
| 2426 | The Lisp printer uses this vector to detect Lisp objects referenced more |
| 2427 | than once. |
| 2428 | |
| 2429 | When you bind `print-continuous-numbering' to t, you should probably |
| 2430 | also bind `print-number-table' to nil. This ensures that the value of |
| 2431 | `print-number-table' can be garbage-collected once the printing is |
| 2432 | done. If all elements of `print-number-table' are nil, it means that |
| 2433 | the printing done so far has not found any shared structure or objects |
| 2434 | that need to be recorded in the table. */); |
| 2435 | Vprint_number_table = Qnil; |
| 2436 | |
| 2437 | DEFVAR_LISP ("print-charset-text-property", &Vprint_charset_text_property, |
| 2438 | doc: /* A flag to control printing of `charset' text property on printing a string. |
| 2439 | The value must be nil, t, or `default'. |
| 2440 | |
| 2441 | If the value is nil, don't print the text property `charset'. |
| 2442 | |
| 2443 | If the value is t, always print the text property `charset'. |
| 2444 | |
| 2445 | If the value is `default', print the text property `charset' only when |
| 2446 | the value is different from what is guessed in the current charset |
| 2447 | priorities. */); |
| 2448 | Vprint_charset_text_property = Qdefault; |
| 2449 | |
| 2450 | /* prin1_to_string_buffer initialized in init_buffer_once in buffer.c */ |
| 2451 | staticpro (&Vprin1_to_string_buffer); |
| 2452 | |
| 2453 | defsubr (&Sprin1); |
| 2454 | defsubr (&Sprin1_to_string); |
| 2455 | defsubr (&Serror_message_string); |
| 2456 | defsubr (&Sprinc); |
| 2457 | defsubr (&Sprint); |
| 2458 | defsubr (&Sterpri); |
| 2459 | defsubr (&Swrite_char); |
| 2460 | defsubr (&Sexternal_debugging_output); |
| 2461 | #ifdef WITH_REDIRECT_DEBUGGING_OUTPUT |
| 2462 | defsubr (&Sredirect_debugging_output); |
| 2463 | #endif |
| 2464 | |
| 2465 | Qexternal_debugging_output = intern_c_string ("external-debugging-output"); |
| 2466 | staticpro (&Qexternal_debugging_output); |
| 2467 | |
| 2468 | Qprint_escape_newlines = intern_c_string ("print-escape-newlines"); |
| 2469 | staticpro (&Qprint_escape_newlines); |
| 2470 | |
| 2471 | Qprint_escape_multibyte = intern_c_string ("print-escape-multibyte"); |
| 2472 | staticpro (&Qprint_escape_multibyte); |
| 2473 | |
| 2474 | Qprint_escape_nonascii = intern_c_string ("print-escape-nonascii"); |
| 2475 | staticpro (&Qprint_escape_nonascii); |
| 2476 | |
| 2477 | print_prune_charset_plist = Qnil; |
| 2478 | staticpro (&print_prune_charset_plist); |
| 2479 | |
| 2480 | defsubr (&Swith_output_to_temp_buffer); |
| 2481 | } |
| 2482 | |
| 2483 | /* arch-tag: bc797170-94ae-41de-86e3-75e20f8f7a39 |
| 2484 | (do not change this comment) */ |