428
+ − 1 /* Lisp object printing and output streams.
+ − 2 Copyright (C) 1985, 1986, 1988, 1992-1995 Free Software Foundation, Inc.
1261
+ − 3 Copyright (C) 1995, 1996, 2000, 2001, 2002, 2003 Ben Wing.
428
+ − 4
+ − 5 This file is part of XEmacs.
+ − 6
+ − 7 XEmacs is free software; you can redistribute it and/or modify it
+ − 8 under the terms of the GNU General Public License as published by the
+ − 9 Free Software Foundation; either version 2, or (at your option) any
+ − 10 later version.
+ − 11
+ − 12 XEmacs is distributed in the hope that it will be useful, but WITHOUT
+ − 13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ − 14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ − 15 for more details.
+ − 16
+ − 17 You should have received a copy of the GNU General Public License
+ − 18 along with XEmacs; see the file COPYING. If not, write to
+ − 19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ − 20 Boston, MA 02111-1307, USA. */
+ − 21
+ − 22 /* Synched up with: Not synched with FSF. */
+ − 23
+ − 24 /* This file has been Mule-ized. */
+ − 25
771
+ − 26 /* Seriously divergent from FSF by this point.
+ − 27
+ − 28 Seriously hacked on by Ben Wing for Mule. All stdio code also by Ben,
+ − 29 as well as the debugging code (initial version of debug_print(), though,
+ − 30 by Jamie Zawinski) and the _fmt interfaces. Also a fair amount of work
+ − 31 by Hrvoje, e.g. floating-point code and rewriting to avoid O(N^2)
+ − 32 consing when outputting to the echo area. Print-circularity code by
+ − 33 Martin? */
428
+ − 34
+ − 35 #include <config.h>
+ − 36 #include "lisp.h"
+ − 37
+ − 38 #include "backtrace.h"
+ − 39 #include "buffer.h"
+ − 40 #include "bytecode.h"
872
+ − 41 #include "device-impl.h"
428
+ − 42 #include "extents.h"
+ − 43 #include "frame.h"
+ − 44 #include "insdel.h"
+ − 45 #include "lstream.h"
771
+ − 46 #include "opaque.h"
800
+ − 47
872
+ − 48 #include "console-tty-impl.h"
+ − 49 #include "console-stream-impl.h"
442
+ − 50 #ifdef WIN32_NATIVE
+ − 51 #include "console-msw.h"
+ − 52 #endif
428
+ − 53
800
+ − 54 #include "sysfile.h"
+ − 55
428
+ − 56 #include <float.h>
+ − 57 /* Define if not in float.h */
+ − 58 #ifndef DBL_DIG
+ − 59 #define DBL_DIG 16
+ − 60 #endif
+ − 61
+ − 62 Lisp_Object Vstandard_output, Qstandard_output;
+ − 63
+ − 64 /* The subroutine object for external-debugging-output is kept here
+ − 65 for the convenience of the debugger. */
442
+ − 66 Lisp_Object Qexternal_debugging_output, Qalternate_debugging_output;
+ − 67
+ − 68 #ifdef HAVE_MS_WINDOWS
+ − 69 Lisp_Object Qmswindows_debugging_output;
+ − 70 #endif
428
+ − 71
+ − 72 /* Avoid actual stack overflow in print. */
+ − 73 static int print_depth;
+ − 74
+ − 75 /* Detect most circularities to print finite output. */
+ − 76 #define PRINT_CIRCLE 200
+ − 77 static Lisp_Object being_printed[PRINT_CIRCLE];
+ − 78
+ − 79 /* Maximum length of list or vector to print in full; noninteger means
+ − 80 effectively infinity */
+ − 81
+ − 82 Lisp_Object Vprint_length;
+ − 83 Lisp_Object Qprint_length;
+ − 84
+ − 85 /* Maximum length of string to print in full; noninteger means
+ − 86 effectively infinity */
+ − 87
+ − 88 Lisp_Object Vprint_string_length;
+ − 89 Lisp_Object Qprint_string_length;
+ − 90
+ − 91 /* Maximum depth of list to print in full; noninteger means
+ − 92 effectively infinity. */
+ − 93
+ − 94 Lisp_Object Vprint_level;
+ − 95
+ − 96 /* Label to use when making echo-area messages. */
+ − 97
+ − 98 Lisp_Object Vprint_message_label;
+ − 99
+ − 100 /* Nonzero means print newlines in strings as \n. */
+ − 101
+ − 102 int print_escape_newlines;
+ − 103 int print_readably;
+ − 104
+ − 105 /* Non-nil means print #: before uninterned symbols.
+ − 106 Neither t nor nil means so that and don't clear Vprint_gensym_alist
+ − 107 on entry to and exit from print functions. */
+ − 108 Lisp_Object Vprint_gensym;
+ − 109 Lisp_Object Vprint_gensym_alist;
+ − 110
+ − 111 Lisp_Object Qdisplay_error;
+ − 112 Lisp_Object Qprint_message_label;
+ − 113
+ − 114 /* Force immediate output of all printed data. Used for debugging. */
+ − 115 int print_unbuffered;
+ − 116
+ − 117 FILE *termscript; /* Stdio stream being used for copy of all output. */
+ − 118
1346
+ − 119 static void write_string_to_alternate_debugging_output (const Ibyte *str,
771
+ − 120 Bytecount len);
+ − 121
1957
+ − 122 /* To avoid consing in debug_prin1, we package up variables we need to bind
+ − 123 into an opaque object. */
+ − 124 struct debug_bindings
+ − 125 {
2367
+ − 126 int inhibit_non_essential_conversion_operations;
1957
+ − 127 int print_depth;
+ − 128 int print_readably;
+ − 129 int print_unbuffered;
+ − 130 int gc_currently_forbidden;
+ − 131 Lisp_Object Vprint_length;
+ − 132 Lisp_Object Vprint_level;
+ − 133 Lisp_Object Vinhibit_quit;
+ − 134 };
+ − 135
+ − 136 static Lisp_Object debug_prin1_bindings;
428
+ − 137
+ − 138
+ − 139 int stdout_needs_newline;
1346
+ − 140 int stdout_clear_before_next_output;
428
+ − 141
771
+ − 142 /* Basic function to actually write to a stdio stream or TTY console. */
+ − 143
442
+ − 144 static void
1346
+ − 145 write_string_to_stdio_stream_1 (FILE *stream, struct console *con,
+ − 146 const Ibyte *ptr, Bytecount len,
+ − 147 int must_flush)
428
+ − 148 {
771
+ − 149 Extbyte *extptr = 0;
+ − 150 Bytecount extlen = 0;
+ − 151 int output_is_std_handle =
+ − 152 stream ? stream == stdout || stream == stderr :
+ − 153 CONSOLE_TTY_DATA (con)->is_stdio;
+ − 154
+ − 155 if (stream || output_is_std_handle)
+ − 156 {
2367
+ − 157 if (initialized && !inhibit_non_essential_conversion_operations)
771
+ − 158 TO_EXTERNAL_FORMAT (DATA, (ptr, len),
+ − 159 ALLOCA, (extptr, extlen),
+ − 160 Qterminal);
+ − 161 else
+ − 162 {
2367
+ − 163 #ifdef NON_ASCII_INTERNAL_FORMAT
+ − 164 #error Do something here
+ − 165 #else
771
+ − 166 extptr = (Extbyte *) ptr;
+ − 167 extlen = (Bytecount) len;
2367
+ − 168 #endif
771
+ − 169 }
+ − 170 }
+ − 171
428
+ − 172 if (stream)
+ − 173 {
442
+ − 174 #ifdef WIN32_NATIVE
+ − 175 HANDLE errhand = GetStdHandle (STD_INPUT_HANDLE);
+ − 176 int no_useful_stderr = errhand == 0 || errhand == INVALID_HANDLE_VALUE;
+ − 177
+ − 178 if (!no_useful_stderr)
+ − 179 no_useful_stderr = !PeekNamedPipe (errhand, 0, 0, 0, 0, 0);
+ − 180 /* we typically have no useful stdout/stderr under windows if we're
+ − 181 being invoked graphically. */
+ − 182 if (no_useful_stderr)
771
+ − 183 mswindows_output_console_string (ptr, len);
442
+ − 184 else
428
+ − 185 #endif
442
+ − 186 {
771
+ − 187 retry_fwrite (extptr, 1, extlen, stream);
442
+ − 188 #ifdef WIN32_NATIVE
+ − 189 /* Q122442 says that pipes are "treated as files, not as
+ − 190 devices", and that this is a feature. Before I found that
+ − 191 article, I thought it was a bug. Thanks MS, I feel much
+ − 192 better now. - kkm */
+ − 193 must_flush = 1;
+ − 194 #endif
+ − 195 if (must_flush)
+ − 196 fflush (stream);
+ − 197 }
428
+ − 198 }
+ − 199 else
771
+ − 200 /* The stream itself does conversion to external format */
+ − 201 Lstream_write (XLSTREAM (CONSOLE_TTY_DATA (con)->outstream), ptr, len);
442
+ − 202
+ − 203 if (output_is_std_handle)
428
+ − 204 {
+ − 205 if (termscript)
+ − 206 {
771
+ − 207 retry_fwrite (extptr, 1, extlen, termscript);
428
+ − 208 fflush (termscript);
+ − 209 }
1346
+ − 210 stdout_needs_newline = (ptr[len - 1] != '\n');
428
+ − 211 }
+ − 212 }
+ − 213
1346
+ − 214 /* Write to a stdio stream or TTY console, first clearing the left side
+ − 215 if necessary. */
+ − 216
+ − 217 static void
+ − 218 write_string_to_stdio_stream (FILE *stream, struct console *con,
+ − 219 const Ibyte *ptr, Bytecount len,
+ − 220 int must_flush)
+ − 221 {
+ − 222 if (stdout_clear_before_next_output &&
+ − 223 (stream ? stream == stdout || stream == stderr :
+ − 224 CONSOLE_TTY_DATA (con)->is_stdio))
+ − 225 {
+ − 226 if (stdout_needs_newline)
+ − 227 write_string_to_stdio_stream_1 (stream, con, (Ibyte *) "\n", 1,
+ − 228 must_flush);
+ − 229 stdout_clear_before_next_output = 0;
+ − 230 }
+ − 231
+ − 232 write_string_to_stdio_stream_1 (stream, con, ptr, len, must_flush);
+ − 233 }
+ − 234
+ − 235 /*
+ − 236 EXT_PRINT_STDOUT = stdout or its equivalent (may be a
+ − 237 console window under MS Windows)
+ − 238 EXT_PRINT_STDERR = stderr or its equivalent (may be a
+ − 239 console window under MS Windows)
+ − 240 EXT_PRINT_ALTERNATE = an internal character array; see
+ − 241 `alternate-debugging-output'
+ − 242 EXT_PRINT_MSWINDOWS = Under MS Windows, the "debugging output" that
+ − 243 debuggers can hook into; uses OutputDebugString()
+ − 244 system call
+ − 245 EXT_PRINT_ALL = all of the above except stdout
+ − 246 */
+ − 247
+ − 248 enum ext_print
+ − 249 {
+ − 250 EXT_PRINT_STDOUT = 1,
+ − 251 EXT_PRINT_STDERR = 2,
+ − 252 EXT_PRINT_ALTERNATE = 4,
+ − 253 EXT_PRINT_MSWINDOWS = 8,
+ − 254 EXT_PRINT_ALL = 14
+ − 255 };
+ − 256
+ − 257 static void
+ − 258 write_string_to_external_output (const Ibyte *ptr, Bytecount len,
+ − 259 int dest)
+ − 260 {
+ − 261 if (dest & EXT_PRINT_STDOUT)
+ − 262 write_string_to_stdio_stream (stdout, 0, ptr, len, 1);
+ − 263 if (dest & EXT_PRINT_STDERR)
+ − 264 write_string_to_stdio_stream (stderr, 0, ptr, len, 1);
+ − 265 if (dest & EXT_PRINT_ALTERNATE)
+ − 266 write_string_to_alternate_debugging_output (ptr, len);
+ − 267 #ifdef WIN32_NATIVE
+ − 268 if (dest & EXT_PRINT_MSWINDOWS)
+ − 269 write_string_to_mswindows_debugging_output (ptr, len);
+ − 270 #endif
+ − 271 }
+ − 272
+ − 273 /* #### The following function should make use of a call to the
+ − 274 emacs_vsprintf_*() functions rather than just using vsprintf. This is
+ − 275 the only way to ensure that I18N3 works properly (many implementations
+ − 276 of the *printf() functions, including the ones included in glibc, do not
+ − 277 implement the %###$ argument-positioning syntax).
442
+ − 278
+ − 279 Note, however, that to do this, we'd have to
+ − 280
+ − 281 1) pre-allocate all the lstreams and do whatever else was necessary
+ − 282 to make sure that no allocation occurs, since these functions may be
+ − 283 called from fatal_error_signal().
+ − 284
+ − 285 2) (to be really correct) make a new lstream that outputs using
1346
+ − 286 mswindows_output_console_string().
+ − 287
+ − 288 3) A reasonable compromise might be to use emacs_vsprintf() when we're
+ − 289 in a safe state, and when not, use plain vsprintf(). */
442
+ − 290
771
+ − 291 static void
1346
+ − 292 write_string_to_external_output_va (const CIbyte *fmt, va_list args,
+ − 293 int dest)
442
+ − 294 {
867
+ − 295 Ibyte kludge[8192];
771
+ − 296 Bytecount kludgelen;
+ − 297
2367
+ − 298 if (initialized && !inhibit_non_essential_conversion_operations)
771
+ − 299 fmt = GETTEXT (fmt);
867
+ − 300 vsprintf ((CIbyte *) kludge, fmt, args);
771
+ − 301 kludgelen = qxestrlen (kludge);
1346
+ − 302 write_string_to_external_output (kludge, kludgelen, dest);
442
+ − 303 }
+ − 304
771
+ − 305 /* Output portably to stderr or its equivalent (i.e. may be a console
+ − 306 window under MS Windows); do external-format conversion and call GETTEXT
+ − 307 on the format string. Automatically flush when done.
442
+ − 308
2731
+ − 309 NOTE: CIbyte means "internal format" data. This includes the "..."
+ − 310 arguments. For numerical arguments, we have to assume that vsprintf
+ − 311 will be a good boy and format them as ASCII. For Mule internal coding
+ − 312 (and UTF-8 internal coding, if/when we get it), it is safe to pass
+ − 313 string values in internal format to be formatted, because zero octets
+ − 314 only occur in the NUL character itself. Similarly, it is safe to pass
+ − 315 pure ASCII literal strings for these functions. *Everything else must
+ − 316 be converted, including all external data.*
+ − 317
+ − 318 This function is safe to use even when not initialized or when dying --
+ − 319 we don't do conversion in such cases. */
771
+ − 320
+ − 321 void
867
+ − 322 stderr_out (const CIbyte *fmt, ...)
442
+ − 323 {
+ − 324 va_list args;
+ − 325 va_start (args, fmt);
1346
+ − 326 write_string_to_external_output_va (fmt, args, EXT_PRINT_STDERR);
442
+ − 327 va_end (args);
+ − 328 }
+ − 329
771
+ − 330 /* Output portably to stdout or its equivalent (i.e. may be a console
+ − 331 window under MS Windows). Works like stderr_out(). */
442
+ − 332
771
+ − 333 void
867
+ − 334 stdout_out (const CIbyte *fmt, ...)
442
+ − 335 {
+ − 336 va_list args;
+ − 337 va_start (args, fmt);
1346
+ − 338 write_string_to_external_output_va (fmt, args, EXT_PRINT_STDOUT);
+ − 339 va_end (args);
+ − 340 }
+ − 341
+ − 342 /* Output portably to print destination as specified by DEST. */
+ − 343
+ − 344 void
+ − 345 external_out (int dest, const CIbyte *fmt, ...)
+ − 346 {
+ − 347 va_list args;
+ − 348 va_start (args, fmt);
+ − 349 write_string_to_external_output_va (fmt, args, dest);
442
+ − 350 va_end (args);
771
+ − 351 }
+ − 352
+ − 353 /* Output portably to stderr or its equivalent (i.e. may be a console
+ − 354 window under MS Windows), as well as alternate-debugging-output and
+ − 355 (under MS Windows) the C debugging output, i.e. OutputDebugString().
+ − 356 Works like stderr_out(). */
+ − 357
+ − 358 void
867
+ − 359 debug_out (const CIbyte *fmt, ...)
771
+ − 360 {
+ − 361 va_list args;
+ − 362 va_start (args, fmt);
1346
+ − 363 write_string_to_external_output_va (fmt, args, EXT_PRINT_ALL);
771
+ − 364 va_end (args);
442
+ − 365 }
+ − 366
+ − 367 DOESNT_RETURN
867
+ − 368 fatal (const CIbyte *fmt, ...)
442
+ − 369 {
+ − 370 va_list args;
+ − 371 va_start (args, fmt);
+ − 372
771
+ − 373 stderr_out ("\nXEmacs: fatal error: ");
1346
+ − 374 write_string_to_external_output_va (fmt, args, EXT_PRINT_STDERR);
442
+ − 375 stderr_out ("\n");
+ − 376
+ − 377 va_end (args);
+ − 378 exit (1);
+ − 379 }
+ − 380
428
+ − 381 /* Write a string to the output location specified in FUNCTION.
+ − 382 Arguments NONRELOC, RELOC, OFFSET, and LEN are as in
771
+ − 383 buffer_insert_string_1() in insdel.c.
+ − 384
+ − 385 FUNCTION is one of
+ − 386
+ − 387 -- an lstream
+ − 388 -- a buffer (insert at point and advance point)
+ − 389 -- a marker (insert at marker and advance marker)
+ − 390 -- a frame (append to echo area; clear echo area first if
+ − 391 `print-message-label' has changed since the last time)
+ − 392 -- t or nil (send to stdout)
+ − 393 -- a Lisp function of one argument (call to get data output)
+ − 394
+ − 395 Use Qexternal_debugging_output to get output to stderr.
+ − 396 */
428
+ − 397
+ − 398 static void
867
+ − 399 output_string (Lisp_Object function, const Ibyte *nonreloc,
428
+ − 400 Lisp_Object reloc, Bytecount offset, Bytecount len)
+ − 401 {
+ − 402 /* This function can GC */
+ − 403 Charcount cclen;
+ − 404 /* We change the value of nonreloc (fetching it from reloc as
+ − 405 necessary), but we don't want to pass this changed value on to
+ − 406 other functions that take both a nonreloc and a reloc, or things
+ − 407 may get confused and an assertion failure in
+ − 408 fixup_internal_substring() may get triggered. */
867
+ − 409 const Ibyte *newnonreloc = nonreloc;
428
+ − 410 struct gcpro gcpro1, gcpro2;
+ − 411
+ − 412 /* Emacs won't print while GCing, but an external debugger might */
771
+ − 413 #ifdef NO_PRINT_DURING_GC
428
+ − 414 if (gc_in_progress) return;
771
+ − 415 #endif
428
+ − 416
+ − 417 /* Perhaps not necessary but probably safer. */
+ − 418 GCPRO2 (function, reloc);
+ − 419
+ − 420 fixup_internal_substring (newnonreloc, reloc, offset, &len);
+ − 421
+ − 422 if (STRINGP (reloc))
771
+ − 423 {
793
+ − 424 cclen = string_offset_byte_to_char_len (reloc, offset, len);
771
+ − 425 newnonreloc = XSTRING_DATA (reloc);
+ − 426 }
+ − 427 else
+ − 428 cclen = bytecount_to_charcount (newnonreloc + offset, len);
428
+ − 429
+ − 430 if (LSTREAMP (function))
+ − 431 {
+ − 432 if (STRINGP (reloc))
+ − 433 {
+ − 434 /* Protect against Lstream_write() causing a GC and
+ − 435 relocating the string. For small strings, we do it by
+ − 436 alloc'ing the string and using a copy; for large strings,
+ − 437 we inhibit GC. */
+ − 438 if (len < 65536)
+ − 439 {
2367
+ − 440 Ibyte *copied = alloca_ibytes (len);
428
+ − 441 memcpy (copied, newnonreloc + offset, len);
+ − 442 Lstream_write (XLSTREAM (function), copied, len);
+ − 443 }
1957
+ − 444 else if (gc_currently_forbidden)
+ − 445 {
+ − 446 /* Avoid calling begin_gc_forbidden, which conses. We can reach
+ − 447 this point from the cons debug code, which will get us into
+ − 448 an infinite loop if we cons again. */
+ − 449 Lstream_write (XLSTREAM (function), newnonreloc + offset, len);
+ − 450 }
428
+ − 451 else
+ − 452 {
771
+ − 453 int speccount = begin_gc_forbidden ();
428
+ − 454 Lstream_write (XLSTREAM (function), newnonreloc + offset, len);
771
+ − 455 unbind_to (speccount);
428
+ − 456 }
+ − 457 }
+ − 458 else
+ − 459 Lstream_write (XLSTREAM (function), newnonreloc + offset, len);
+ − 460
+ − 461 if (print_unbuffered)
+ − 462 Lstream_flush (XLSTREAM (function));
+ − 463 }
+ − 464 else if (BUFFERP (function))
+ − 465 {
+ − 466 CHECK_LIVE_BUFFER (function);
+ − 467 buffer_insert_string (XBUFFER (function), nonreloc, reloc, offset, len);
+ − 468 }
+ − 469 else if (MARKERP (function))
+ − 470 {
+ − 471 /* marker_position() will err if marker doesn't point anywhere. */
665
+ − 472 Charbpos spoint = marker_position (function);
428
+ − 473
+ − 474 buffer_insert_string_1 (XMARKER (function)->buffer,
+ − 475 spoint, nonreloc, reloc, offset, len,
+ − 476 0);
+ − 477 Fset_marker (function, make_int (spoint + cclen),
+ − 478 Fmarker_buffer (function));
+ − 479 }
+ − 480 else if (FRAMEP (function))
+ − 481 {
+ − 482 /* This gets used by functions not invoking print_prepare(),
+ − 483 such as Fwrite_char, Fterpri, etc.. */
+ − 484 struct frame *f = XFRAME (function);
+ − 485 CHECK_LIVE_FRAME (function);
+ − 486
+ − 487 if (!EQ (Vprint_message_label, echo_area_status (f)))
+ − 488 clear_echo_area_from_print (f, Qnil, 1);
+ − 489 echo_area_append (f, nonreloc, reloc, offset, len, Vprint_message_label);
+ − 490 }
+ − 491 else if (EQ (function, Qt) || EQ (function, Qnil))
+ − 492 {
771
+ − 493 write_string_to_stdio_stream (stdout, 0, newnonreloc + offset, len,
+ − 494 print_unbuffered);
+ − 495 }
+ − 496 else if (EQ (function, Qexternal_debugging_output))
+ − 497 {
+ − 498 /* This is not strictly necessary, and somewhat of a hack, but it
+ − 499 avoids having each character passed separately to
+ − 500 `external-debugging-output'. #### Why do we pass each character
+ − 501 separately, anyway?
+ − 502 */
+ − 503 write_string_to_stdio_stream (stderr, 0, newnonreloc + offset, len,
+ − 504 print_unbuffered);
428
+ − 505 }
+ − 506 else
+ − 507 {
771
+ − 508 Charcount ccoff;
428
+ − 509 Charcount iii;
+ − 510
771
+ − 511 if (STRINGP (reloc))
793
+ − 512 ccoff = string_index_byte_to_char (reloc, offset);
771
+ − 513 else
+ − 514 ccoff = bytecount_to_charcount (newnonreloc, offset);
+ − 515
+ − 516 if (STRINGP (reloc))
428
+ − 517 {
771
+ − 518 for (iii = ccoff; iii < cclen + ccoff; iii++)
+ − 519 {
867
+ − 520 call1 (function, make_char (string_ichar (reloc, iii)));
771
+ − 521 if (STRINGP (reloc))
+ − 522 newnonreloc = XSTRING_DATA (reloc);
+ − 523 }
+ − 524 }
+ − 525 else
+ − 526 {
+ − 527 for (iii = ccoff; iii < cclen + ccoff; iii++)
+ − 528 {
+ − 529 call1 (function,
867
+ − 530 make_char (itext_ichar_n (newnonreloc, iii)));
771
+ − 531 }
428
+ − 532 }
+ − 533 }
+ − 534
+ − 535 UNGCPRO;
+ − 536 }
+ − 537
+ − 538 #define RESET_PRINT_GENSYM do { \
+ − 539 if (!CONSP (Vprint_gensym)) \
+ − 540 Vprint_gensym_alist = Qnil; \
+ − 541 } while (0)
+ − 542
1261
+ − 543 Lisp_Object
428
+ − 544 canonicalize_printcharfun (Lisp_Object printcharfun)
+ − 545 {
+ − 546 if (NILP (printcharfun))
+ − 547 printcharfun = Vstandard_output;
+ − 548
1261
+ − 549 if (!noninteractive && (EQ (printcharfun, Qt) || NILP (printcharfun)))
428
+ − 550 printcharfun = Fselected_frame (Qnil); /* print to minibuffer */
+ − 551
+ − 552 return printcharfun;
+ − 553 }
+ − 554
+ − 555 static Lisp_Object
+ − 556 print_prepare (Lisp_Object printcharfun, Lisp_Object *frame_kludge)
+ − 557 {
+ − 558 /* Emacs won't print while GCing, but an external debugger might */
771
+ − 559 #ifdef NO_PRINT_DURING_GC
428
+ − 560 if (gc_in_progress)
+ − 561 return Qnil;
771
+ − 562 #endif
+ − 563
428
+ − 564 RESET_PRINT_GENSYM;
+ − 565
+ − 566 printcharfun = canonicalize_printcharfun (printcharfun);
+ − 567
+ − 568 /* Here we could safely return the canonicalized PRINTCHARFUN.
+ − 569 However, if PRINTCHARFUN is a frame, printing of complex
+ − 570 structures becomes very expensive, because `append-message'
+ − 571 (called by echo_area_append) gets called as many times as
+ − 572 output_string() is called (and that's a *lot*). append-message
+ − 573 tries to keep top of the message-stack in sync with the contents
+ − 574 of " *Echo Area" buffer, consing a new string for each component
+ − 575 of the printed structure. For instance, if you print (a a),
+ − 576 append-message will cons up the following strings:
+ − 577
+ − 578 "("
+ − 579 "(a"
+ − 580 "(a "
+ − 581 "(a a"
+ − 582 "(a a)"
+ − 583
+ − 584 and will use only the last one. With larger objects, this turns
+ − 585 into an O(n^2) consing frenzy that locks up XEmacs in incessant
+ − 586 garbage collection.
+ − 587
+ − 588 We prevent this by creating a resizing_buffer stream and letting
+ − 589 the printer write into it. print_finish() will notice this
+ − 590 stream, and invoke echo_area_append() with the stream's buffer,
+ − 591 only once. */
+ − 592 if (FRAMEP (printcharfun))
+ − 593 {
+ − 594 CHECK_LIVE_FRAME (printcharfun);
+ − 595 *frame_kludge = printcharfun;
+ − 596 printcharfun = make_resizing_buffer_output_stream ();
+ − 597 }
+ − 598
+ − 599 return printcharfun;
+ − 600 }
+ − 601
+ − 602 static void
+ − 603 print_finish (Lisp_Object stream, Lisp_Object frame_kludge)
+ − 604 {
+ − 605 /* Emacs won't print while GCing, but an external debugger might */
771
+ − 606 #ifdef NO_PRINT_DURING_GC
428
+ − 607 if (gc_in_progress)
+ − 608 return;
771
+ − 609 #endif
+ − 610
428
+ − 611 RESET_PRINT_GENSYM;
+ − 612
+ − 613 /* See the comment in print_prepare(). */
+ − 614 if (FRAMEP (frame_kludge))
+ − 615 {
+ − 616 struct frame *f = XFRAME (frame_kludge);
+ − 617 Lstream *str = XLSTREAM (stream);
+ − 618 CHECK_LIVE_FRAME (frame_kludge);
+ − 619
+ − 620 Lstream_flush (str);
+ − 621 if (!EQ (Vprint_message_label, echo_area_status (f)))
+ − 622 clear_echo_area_from_print (f, Qnil, 1);
+ − 623 echo_area_append (f, resizing_buffer_stream_ptr (str),
+ − 624 Qnil, 0, Lstream_byte_count (str),
+ − 625 Vprint_message_label);
+ − 626 Lstream_delete (str);
+ − 627 }
+ − 628 }
+ − 629
+ − 630
771
+ − 631 /* Write internal-format data to STREAM. See output_string() for
+ − 632 interpretation of STREAM.
+ − 633
+ − 634 NOTE: Do not call this with the data of a Lisp_String, as
428
+ − 635 printcharfun might cause a GC, which might cause the string's data
+ − 636 to be relocated. To princ a Lisp string, use:
+ − 637
+ − 638 print_internal (string, printcharfun, 0);
+ − 639
+ − 640 Also note that STREAM should be the result of
+ − 641 canonicalize_printcharfun() (i.e. Qnil means stdout, not
+ − 642 Vstandard_output, etc.) */
+ − 643 void
867
+ − 644 write_string_1 (Lisp_Object stream, const Ibyte *str, Bytecount size)
428
+ − 645 {
+ − 646 /* This function can GC */
800
+ − 647 #ifdef ERROR_CHECK_TEXT
428
+ − 648 assert (size >= 0);
+ − 649 #endif
+ − 650 output_string (stream, str, Qnil, 0, size);
+ − 651 }
+ − 652
+ − 653 void
867
+ − 654 write_string (Lisp_Object stream, const Ibyte *str)
771
+ − 655 {
+ − 656 /* This function can GC */
826
+ − 657 write_string_1 (stream, str, qxestrlen (str));
771
+ − 658 }
+ − 659
+ − 660 void
867
+ − 661 write_c_string (Lisp_Object stream, const CIbyte *str)
428
+ − 662 {
+ − 663 /* This function can GC */
867
+ − 664 write_string_1 (stream, (const Ibyte *) str, strlen (str));
428
+ − 665 }
+ − 666
793
+ − 667 void
826
+ − 668 write_eistring (Lisp_Object stream, const Eistring *ei)
793
+ − 669 {
826
+ − 670 write_string_1 (stream, eidata (ei), eilen (ei));
793
+ − 671 }
+ − 672
771
+ − 673 /* Write a printf-style string to STREAM; see output_string(). */
+ − 674
+ − 675 void
867
+ − 676 write_fmt_string (Lisp_Object stream, const CIbyte *fmt, ...)
771
+ − 677 {
+ − 678 va_list va;
867
+ − 679 Ibyte *str;
771
+ − 680 Bytecount len;
+ − 681 int count;
+ − 682
+ − 683 va_start (va, fmt);
+ − 684 str = emacs_vsprintf_malloc (fmt, va, &len);
+ − 685 va_end (va);
+ − 686 count = record_unwind_protect_freeing (str);
826
+ − 687 write_string_1 (stream, str, len);
771
+ − 688 unbind_to (count);
+ − 689 }
+ − 690
+ − 691 /* Write a printf-style string to STREAM, where the arguments are
+ − 692 Lisp objects and not C strings or integers; see output_string().
+ − 693
+ − 694 #### It shouldn't be necessary to specify the number of arguments.
+ − 695 This would require some rewriting of the doprnt() functions, though. */
+ − 696
+ − 697 void
867
+ − 698 write_fmt_string_lisp (Lisp_Object stream, const CIbyte *fmt, int nargs, ...)
771
+ − 699 {
+ − 700 Lisp_Object *args = alloca_array (Lisp_Object, nargs);
+ − 701 va_list va;
+ − 702 int i;
867
+ − 703 Ibyte *str;
771
+ − 704 Bytecount len;
+ − 705 int count;
+ − 706
+ − 707 va_start (va, nargs);
+ − 708 for (i = 0; i < nargs; i++)
+ − 709 args[i] = va_arg (va, Lisp_Object);
+ − 710 va_end (va);
+ − 711 str = emacs_vsprintf_malloc_lisp (fmt, Qnil, nargs, args, &len);
+ − 712 count = record_unwind_protect_freeing (str);
826
+ − 713 write_string_1 (stream, str, len);
771
+ − 714 unbind_to (count);
+ − 715 }
+ − 716
+ − 717 void
867
+ − 718 stderr_out_lisp (const CIbyte *fmt, int nargs, ...)
771
+ − 719 {
+ − 720 Lisp_Object *args = alloca_array (Lisp_Object, nargs);
+ − 721 va_list va;
+ − 722 int i;
867
+ − 723 Ibyte *str;
771
+ − 724 Bytecount len;
+ − 725 int count;
+ − 726
+ − 727 va_start (va, nargs);
+ − 728 for (i = 0; i < nargs; i++)
+ − 729 args[i] = va_arg (va, Lisp_Object);
+ − 730 va_end (va);
+ − 731 str = emacs_vsprintf_malloc_lisp (fmt, Qnil, nargs, args, &len);
+ − 732 count = record_unwind_protect_freeing (str);
826
+ − 733 write_string_1 (Qexternal_debugging_output, str, len);
771
+ − 734 unbind_to (count);
+ − 735 }
+ − 736
428
+ − 737
+ − 738 DEFUN ("write-char", Fwrite_char, 1, 2, 0, /*
444
+ − 739 Output character CHARACTER to stream STREAM.
428
+ − 740 STREAM defaults to the value of `standard-output' (which see).
+ − 741 */
444
+ − 742 (character, stream))
428
+ − 743 {
+ − 744 /* This function can GC */
867
+ − 745 Ibyte str[MAX_ICHAR_LEN];
428
+ − 746 Bytecount len;
+ − 747
444
+ − 748 CHECK_CHAR_COERCE_INT (character);
867
+ − 749 len = set_itext_ichar (str, XCHAR (character));
428
+ − 750 output_string (canonicalize_printcharfun (stream), str, Qnil, 0, len);
444
+ − 751 return character;
428
+ − 752 }
+ − 753
+ − 754 void
+ − 755 temp_output_buffer_setup (Lisp_Object bufname)
+ − 756 {
+ − 757 /* This function can GC */
+ − 758 struct buffer *old = current_buffer;
+ − 759 Lisp_Object buf;
+ − 760
+ − 761 #ifdef I18N3
+ − 762 /* #### This function should accept a Lisp_Object instead of a char *,
+ − 763 so that proper translation on the buffer name can occur. */
+ − 764 #endif
+ − 765
+ − 766 Fset_buffer (Fget_buffer_create (bufname));
+ − 767
+ − 768 current_buffer->read_only = Qnil;
+ − 769 Ferase_buffer (Qnil);
+ − 770
793
+ − 771 buf = wrap_buffer (current_buffer);
428
+ − 772 specbind (Qstandard_output, buf);
+ − 773
+ − 774 set_buffer_internal (old);
+ − 775 }
+ − 776
+ − 777 Lisp_Object
+ − 778 internal_with_output_to_temp_buffer (Lisp_Object bufname,
+ − 779 Lisp_Object (*function) (Lisp_Object arg),
+ − 780 Lisp_Object arg,
+ − 781 Lisp_Object same_frame)
+ − 782 {
+ − 783 int speccount = specpdl_depth ();
+ − 784 struct gcpro gcpro1, gcpro2, gcpro3;
+ − 785 Lisp_Object buf = Qnil;
+ − 786
+ − 787 GCPRO3 (buf, arg, same_frame);
+ − 788
+ − 789 temp_output_buffer_setup (bufname);
+ − 790 buf = Vstandard_output;
+ − 791
+ − 792 arg = (*function) (arg);
+ − 793
+ − 794 temp_output_buffer_show (buf, same_frame);
+ − 795 UNGCPRO;
+ − 796
771
+ − 797 return unbind_to_1 (speccount, arg);
428
+ − 798 }
+ − 799
+ − 800 DEFUN ("with-output-to-temp-buffer", Fwith_output_to_temp_buffer, 1, UNEVALLED, 0, /*
+ − 801 Bind `standard-output' to buffer BUFNAME, eval BODY, then show that buffer.
+ − 802 The buffer is cleared out initially, and marked as unmodified when done.
+ − 803 All output done by BODY is inserted in that buffer by default.
+ − 804 The buffer is displayed in another window, but not selected.
+ − 805 The value of the last form in BODY is returned.
+ − 806 If BODY does not finish normally, the buffer BUFNAME is not displayed.
+ − 807
+ − 808 If variable `temp-buffer-show-function' is non-nil, call it at the end
+ − 809 to get the buffer displayed. It gets one argument, the buffer to display.
+ − 810 */
+ − 811 (args))
+ − 812 {
+ − 813 /* This function can GC */
+ − 814 Lisp_Object name = Qnil;
+ − 815 int speccount = specpdl_depth ();
+ − 816 struct gcpro gcpro1, gcpro2;
+ − 817 Lisp_Object val = Qnil;
+ − 818
+ − 819 #ifdef I18N3
+ − 820 /* #### should set the buffer to be translating. See print_internal(). */
+ − 821 #endif
+ − 822
+ − 823 GCPRO2 (name, val);
+ − 824 name = Feval (XCAR (args));
+ − 825
+ − 826 CHECK_STRING (name);
+ − 827
+ − 828 temp_output_buffer_setup (name);
+ − 829 UNGCPRO;
+ − 830
+ − 831 val = Fprogn (XCDR (args));
+ − 832
+ − 833 temp_output_buffer_show (Vstandard_output, Qnil);
+ − 834
771
+ − 835 return unbind_to_1 (speccount, val);
428
+ − 836 }
+ − 837
+ − 838 DEFUN ("terpri", Fterpri, 0, 1, 0, /*
+ − 839 Output a newline to STREAM.
+ − 840 If STREAM is omitted or nil, the value of `standard-output' is used.
+ − 841 */
+ − 842 (stream))
+ − 843 {
+ − 844 /* This function can GC */
826
+ − 845 write_c_string (canonicalize_printcharfun (stream), "\n");
428
+ − 846 return Qt;
+ − 847 }
+ − 848
+ − 849 DEFUN ("prin1", Fprin1, 1, 2, 0, /*
+ − 850 Output the printed representation of OBJECT, any Lisp object.
+ − 851 Quoting characters are printed when needed to make output that `read'
+ − 852 can handle, whenever this is possible.
+ − 853 Output stream is STREAM, or value of `standard-output' (which see).
+ − 854 */
+ − 855 (object, stream))
+ − 856 {
+ − 857 /* This function can GC */
+ − 858 Lisp_Object frame = Qnil;
+ − 859 struct gcpro gcpro1, gcpro2;
+ − 860 GCPRO2 (object, stream);
+ − 861
+ − 862 stream = print_prepare (stream, &frame);
+ − 863 print_internal (object, stream, 1);
+ − 864 print_finish (stream, frame);
+ − 865
+ − 866 UNGCPRO;
+ − 867 return object;
+ − 868 }
+ − 869
+ − 870 DEFUN ("prin1-to-string", Fprin1_to_string, 1, 2, 0, /*
+ − 871 Return a string containing the printed representation of OBJECT,
+ − 872 any Lisp object. Quoting characters are used when needed to make output
+ − 873 that `read' can handle, whenever this is possible, unless the optional
+ − 874 second argument NOESCAPE is non-nil.
+ − 875 */
+ − 876 (object, noescape))
+ − 877 {
+ − 878 /* This function can GC */
+ − 879 Lisp_Object result = Qnil;
+ − 880 Lisp_Object stream = make_resizing_buffer_output_stream ();
+ − 881 Lstream *str = XLSTREAM (stream);
+ − 882 /* gcpro OBJECT in case a caller forgot to do so */
+ − 883 struct gcpro gcpro1, gcpro2, gcpro3;
+ − 884 GCPRO3 (object, stream, result);
+ − 885
+ − 886 RESET_PRINT_GENSYM;
+ − 887 print_internal (object, stream, NILP (noescape));
+ − 888 RESET_PRINT_GENSYM;
+ − 889 Lstream_flush (str);
+ − 890 UNGCPRO;
+ − 891 result = make_string (resizing_buffer_stream_ptr (str),
+ − 892 Lstream_byte_count (str));
+ − 893 Lstream_delete (str);
+ − 894 return result;
+ − 895 }
+ − 896
+ − 897 DEFUN ("princ", Fprinc, 1, 2, 0, /*
+ − 898 Output the printed representation of OBJECT, any Lisp object.
+ − 899 No quoting characters are used; no delimiters are printed around
+ − 900 the contents of strings.
444
+ − 901 Output stream is STREAM, or value of `standard-output' (which see).
428
+ − 902 */
+ − 903 (object, stream))
+ − 904 {
+ − 905 /* This function can GC */
+ − 906 Lisp_Object frame = Qnil;
+ − 907 struct gcpro gcpro1, gcpro2;
+ − 908
+ − 909 GCPRO2 (object, stream);
+ − 910 stream = print_prepare (stream, &frame);
+ − 911 print_internal (object, stream, 0);
+ − 912 print_finish (stream, frame);
+ − 913 UNGCPRO;
+ − 914 return object;
+ − 915 }
+ − 916
+ − 917 DEFUN ("print", Fprint, 1, 2, 0, /*
+ − 918 Output the printed representation of OBJECT, with newlines around it.
+ − 919 Quoting characters are printed when needed to make output that `read'
+ − 920 can handle, whenever this is possible.
+ − 921 Output stream is STREAM, or value of `standard-output' (which see).
+ − 922 */
+ − 923 (object, stream))
+ − 924 {
+ − 925 /* This function can GC */
+ − 926 Lisp_Object frame = Qnil;
+ − 927 struct gcpro gcpro1, gcpro2;
+ − 928
+ − 929 GCPRO2 (object, stream);
+ − 930 stream = print_prepare (stream, &frame);
826
+ − 931 write_c_string (stream, "\n");
428
+ − 932 print_internal (object, stream, 1);
826
+ − 933 write_c_string (stream, "\n");
428
+ − 934 print_finish (stream, frame);
+ − 935 UNGCPRO;
+ − 936 return object;
+ − 937 }
+ − 938
+ − 939 /* Print an error message for the error DATA to STREAM. This is a
+ − 940 complete implementation of `display-error', which used to be in
+ − 941 Lisp (see prim/cmdloop.el). It was ported to C so it can be used
+ − 942 efficiently by Ferror_message_string. Fdisplay_error and
+ − 943 Ferror_message_string are trivial wrappers around this function.
+ − 944
+ − 945 STREAM should be the result of canonicalize_printcharfun(). */
+ − 946 static void
+ − 947 print_error_message (Lisp_Object error_object, Lisp_Object stream)
+ − 948 {
+ − 949 /* This function can GC */
+ − 950 Lisp_Object type = Fcar_safe (error_object);
+ − 951 Lisp_Object method = Qnil;
+ − 952 Lisp_Object tail;
+ − 953
+ − 954 /* No need to GCPRO anything under the assumption that ERROR_OBJECT
+ − 955 is GCPRO'd. */
+ − 956
+ − 957 if (! (CONSP (error_object) && SYMBOLP (type)
+ − 958 && CONSP (Fget (type, Qerror_conditions, Qnil))))
+ − 959 goto error_throw;
+ − 960
+ − 961 tail = XCDR (error_object);
+ − 962 while (!NILP (tail))
+ − 963 {
+ − 964 if (CONSP (tail))
+ − 965 tail = XCDR (tail);
+ − 966 else
+ − 967 goto error_throw;
+ − 968 }
+ − 969 tail = Fget (type, Qerror_conditions, Qnil);
+ − 970 while (!NILP (tail))
+ − 971 {
+ − 972 if (!(CONSP (tail) && SYMBOLP (XCAR (tail))))
+ − 973 goto error_throw;
+ − 974 else if (!NILP (Fget (XCAR (tail), Qdisplay_error, Qnil)))
+ − 975 {
+ − 976 method = Fget (XCAR (tail), Qdisplay_error, Qnil);
+ − 977 goto error_throw;
+ − 978 }
+ − 979 else
+ − 980 tail = XCDR (tail);
+ − 981 }
+ − 982 /* Default method */
+ − 983 {
+ − 984 int first = 1;
+ − 985 int speccount = specpdl_depth ();
438
+ − 986 Lisp_Object frame = Qnil;
+ − 987 struct gcpro gcpro1;
+ − 988 GCPRO1 (stream);
428
+ − 989
+ − 990 specbind (Qprint_message_label, Qerror);
438
+ − 991 stream = print_prepare (stream, &frame);
+ − 992
428
+ − 993 tail = Fcdr (error_object);
+ − 994 if (EQ (type, Qerror))
+ − 995 {
+ − 996 print_internal (Fcar (tail), stream, 0);
+ − 997 tail = Fcdr (tail);
+ − 998 }
+ − 999 else
+ − 1000 {
+ − 1001 Lisp_Object errmsg = Fget (type, Qerror_message, Qnil);
+ − 1002 if (NILP (errmsg))
+ − 1003 print_internal (type, stream, 0);
+ − 1004 else
+ − 1005 print_internal (LISP_GETTEXT (errmsg), stream, 0);
+ − 1006 }
+ − 1007 while (!NILP (tail))
+ − 1008 {
826
+ − 1009 write_c_string (stream, first ? ": " : ", ");
563
+ − 1010 /* Most errors have an explanatory string as their first argument,
+ − 1011 and it looks better not to put the quotes around it. */
+ − 1012 print_internal (Fcar (tail), stream,
+ − 1013 !(first && STRINGP (Fcar (tail))) ||
+ − 1014 !NILP (Fget (type, Qerror_lacks_explanatory_string,
+ − 1015 Qnil)));
428
+ − 1016 tail = Fcdr (tail);
+ − 1017 first = 0;
+ − 1018 }
438
+ − 1019 print_finish (stream, frame);
+ − 1020 UNGCPRO;
771
+ − 1021 unbind_to (speccount);
428
+ − 1022 return;
+ − 1023 /* not reached */
+ − 1024 }
+ − 1025
+ − 1026 error_throw:
+ − 1027 if (NILP (method))
+ − 1028 {
826
+ − 1029 write_c_string (stream, GETTEXT ("Peculiar error "));
428
+ − 1030 print_internal (error_object, stream, 1);
+ − 1031 return;
+ − 1032 }
+ − 1033 else
+ − 1034 {
+ − 1035 call2 (method, error_object, stream);
+ − 1036 }
+ − 1037 }
+ − 1038
+ − 1039 DEFUN ("error-message-string", Ferror_message_string, 1, 1, 0, /*
+ − 1040 Convert ERROR-OBJECT to an error message, and return it.
+ − 1041
+ − 1042 The format of ERROR-OBJECT should be (ERROR-SYMBOL . DATA). The
+ − 1043 message is equivalent to the one that would be issued by
+ − 1044 `display-error' with the same argument.
+ − 1045 */
+ − 1046 (error_object))
+ − 1047 {
+ − 1048 /* This function can GC */
+ − 1049 Lisp_Object result = Qnil;
+ − 1050 Lisp_Object stream = make_resizing_buffer_output_stream ();
+ − 1051 struct gcpro gcpro1;
+ − 1052 GCPRO1 (stream);
+ − 1053
+ − 1054 print_error_message (error_object, stream);
+ − 1055 Lstream_flush (XLSTREAM (stream));
+ − 1056 result = make_string (resizing_buffer_stream_ptr (XLSTREAM (stream)),
+ − 1057 Lstream_byte_count (XLSTREAM (stream)));
+ − 1058 Lstream_delete (XLSTREAM (stream));
+ − 1059
+ − 1060 UNGCPRO;
+ − 1061 return result;
+ − 1062 }
+ − 1063
+ − 1064 DEFUN ("display-error", Fdisplay_error, 2, 2, 0, /*
+ − 1065 Display ERROR-OBJECT on STREAM in a user-friendly way.
+ − 1066 */
+ − 1067 (error_object, stream))
+ − 1068 {
+ − 1069 /* This function can GC */
+ − 1070 print_error_message (error_object, canonicalize_printcharfun (stream));
+ − 1071 return Qnil;
+ − 1072 }
+ − 1073
+ − 1074
+ − 1075 Lisp_Object Vfloat_output_format;
+ − 1076
+ − 1077 /*
+ − 1078 * This buffer should be at least as large as the max string size of the
440
+ − 1079 * largest float, printed in the biggest notation. This is undoubtedly
428
+ − 1080 * 20d float_output_format, with the negative of the C-constant "HUGE"
+ − 1081 * from <math.h>.
+ − 1082 *
+ − 1083 * On the vax the worst case is -1e38 in 20d format which takes 61 bytes.
+ − 1084 *
+ − 1085 * I assume that IEEE-754 format numbers can take 329 bytes for the worst
+ − 1086 * case of -1e307 in 20d float_output_format. What is one to do (short of
+ − 1087 * re-writing _doprnt to be more sane)?
+ − 1088 * -wsr
+ − 1089 */
+ − 1090 void
+ − 1091 float_to_string (char *buf, double data)
+ − 1092 {
867
+ − 1093 Ibyte *cp, c;
428
+ − 1094 int width;
+ − 1095
+ − 1096 if (NILP (Vfloat_output_format)
+ − 1097 || !STRINGP (Vfloat_output_format))
+ − 1098 lose:
+ − 1099 sprintf (buf, "%.16g", data);
+ − 1100 else /* oink oink */
+ − 1101 {
+ − 1102 /* Check that the spec we have is fully valid.
+ − 1103 This means not only valid for printf,
+ − 1104 but meant for floats, and reasonable. */
+ − 1105 cp = XSTRING_DATA (Vfloat_output_format);
+ − 1106
+ − 1107 if (cp[0] != '%')
+ − 1108 goto lose;
+ − 1109 if (cp[1] != '.')
+ − 1110 goto lose;
+ − 1111
+ − 1112 cp += 2;
+ − 1113 for (width = 0; (c = *cp, isdigit (c)); cp++)
+ − 1114 {
+ − 1115 width *= 10;
+ − 1116 width += c - '0';
+ − 1117 }
+ − 1118
+ − 1119 if (*cp != 'e' && *cp != 'f' && *cp != 'g' && *cp != 'E' && *cp != 'G')
+ − 1120 goto lose;
+ − 1121
+ − 1122 if (width < (int) (*cp != 'e' && *cp != 'E') || width > DBL_DIG)
+ − 1123 goto lose;
+ − 1124
+ − 1125 if (cp[1] != 0)
+ − 1126 goto lose;
+ − 1127
+ − 1128 sprintf (buf, (char *) XSTRING_DATA (Vfloat_output_format),
+ − 1129 data);
+ − 1130 }
+ − 1131
+ − 1132 /* added by jwz: don't allow "1.0" to print as "1"; that destroys
+ − 1133 the read-equivalence of lisp objects. (* x 1) and (* x 1.0) do
+ − 1134 not do the same thing, so it's important that the printed
+ − 1135 representation of that form not be corrupted by the printer.
+ − 1136 */
+ − 1137 {
867
+ − 1138 Ibyte *s = (Ibyte *) buf; /* don't use signed chars here!
428
+ − 1139 isdigit() can't hack them! */
+ − 1140 if (*s == '-') s++;
+ − 1141 for (; *s; s++)
+ − 1142 /* if there's a non-digit, then there is a decimal point, or
+ − 1143 it's in exponential notation, both of which are ok. */
+ − 1144 if (!isdigit (*s))
+ − 1145 goto DONE_LABEL;
+ − 1146 /* otherwise, we need to hack it. */
+ − 1147 *s++ = '.';
+ − 1148 *s++ = '0';
+ − 1149 *s = 0;
+ − 1150 }
+ − 1151 DONE_LABEL:
+ − 1152
+ − 1153 /* Some machines print "0.4" as ".4". I don't like that. */
+ − 1154 if (buf [0] == '.' || (buf [0] == '-' && buf [1] == '.'))
+ − 1155 {
+ − 1156 int i;
+ − 1157 for (i = strlen (buf) + 1; i >= 0; i--)
+ − 1158 buf [i+1] = buf [i];
+ − 1159 buf [(buf [0] == '-' ? 1 : 0)] = '0';
+ − 1160 }
+ − 1161 }
+ − 1162
2500
+ − 1163 #define ONE_DIGIT(figure) *p++ = (char) (n / (figure) + '0')
577
+ − 1164 #define ONE_DIGIT_ADVANCE(figure) (ONE_DIGIT (figure), n %= (figure))
+ − 1165
+ − 1166 #define DIGITS_1(figure) ONE_DIGIT (figure)
+ − 1167 #define DIGITS_2(figure) ONE_DIGIT_ADVANCE (figure); DIGITS_1 ((figure) / 10)
+ − 1168 #define DIGITS_3(figure) ONE_DIGIT_ADVANCE (figure); DIGITS_2 ((figure) / 10)
+ − 1169 #define DIGITS_4(figure) ONE_DIGIT_ADVANCE (figure); DIGITS_3 ((figure) / 10)
+ − 1170 #define DIGITS_5(figure) ONE_DIGIT_ADVANCE (figure); DIGITS_4 ((figure) / 10)
+ − 1171 #define DIGITS_6(figure) ONE_DIGIT_ADVANCE (figure); DIGITS_5 ((figure) / 10)
+ − 1172 #define DIGITS_7(figure) ONE_DIGIT_ADVANCE (figure); DIGITS_6 ((figure) / 10)
+ − 1173 #define DIGITS_8(figure) ONE_DIGIT_ADVANCE (figure); DIGITS_7 ((figure) / 10)
+ − 1174 #define DIGITS_9(figure) ONE_DIGIT_ADVANCE (figure); DIGITS_8 ((figure) / 10)
+ − 1175 #define DIGITS_10(figure) ONE_DIGIT_ADVANCE (figure); DIGITS_9 ((figure) / 10)
+ − 1176
+ − 1177 /* DIGITS_<11-20> are only used on machines with 64-bit longs. */
428
+ − 1178
577
+ − 1179 #define DIGITS_11(figure) ONE_DIGIT_ADVANCE (figure); DIGITS_10 ((figure) / 10)
+ − 1180 #define DIGITS_12(figure) ONE_DIGIT_ADVANCE (figure); DIGITS_11 ((figure) / 10)
+ − 1181 #define DIGITS_13(figure) ONE_DIGIT_ADVANCE (figure); DIGITS_12 ((figure) / 10)
+ − 1182 #define DIGITS_14(figure) ONE_DIGIT_ADVANCE (figure); DIGITS_13 ((figure) / 10)
+ − 1183 #define DIGITS_15(figure) ONE_DIGIT_ADVANCE (figure); DIGITS_14 ((figure) / 10)
+ − 1184 #define DIGITS_16(figure) ONE_DIGIT_ADVANCE (figure); DIGITS_15 ((figure) / 10)
+ − 1185 #define DIGITS_17(figure) ONE_DIGIT_ADVANCE (figure); DIGITS_16 ((figure) / 10)
+ − 1186 #define DIGITS_18(figure) ONE_DIGIT_ADVANCE (figure); DIGITS_17 ((figure) / 10)
+ − 1187 #define DIGITS_19(figure) ONE_DIGIT_ADVANCE (figure); DIGITS_18 ((figure) / 10)
+ − 1188
+ − 1189 /* Print NUMBER to BUFFER in base 10. This is completely equivalent
+ − 1190 to `sprintf(buffer, "%ld", number)', only much faster.
+ − 1191
+ − 1192 The speedup may make a difference in programs that frequently
+ − 1193 convert numbers to strings. Some implementations of sprintf,
+ − 1194 particularly the one in GNU libc, have been known to be extremely
+ − 1195 slow compared to this function.
+ − 1196
+ − 1197 BUFFER should accept as many bytes as you expect the number to take
+ − 1198 up. On machines with 64-bit longs the maximum needed size is 24
+ − 1199 bytes. That includes the worst-case digits, the optional `-' sign,
+ − 1200 and the trailing \0. */
+ − 1201
+ − 1202 void
428
+ − 1203 long_to_string (char *buffer, long number)
+ − 1204 {
577
+ − 1205 char *p = buffer;
+ − 1206 long n = number;
+ − 1207
428
+ − 1208 #if (SIZEOF_LONG != 4) && (SIZEOF_LONG != 8)
577
+ − 1209 /* We are running in a strange or misconfigured environment. Let
+ − 1210 sprintf cope with it. */
+ − 1211 sprintf (buffer, "%ld", n);
+ − 1212 #else /* (SIZEOF_LONG == 4) || (SIZEOF_LONG == 8) */
428
+ − 1213
577
+ − 1214 if (n < 0)
428
+ − 1215 {
+ − 1216 *p++ = '-';
577
+ − 1217 n = -n;
428
+ − 1218 }
+ − 1219
577
+ − 1220 if (n < 10) { DIGITS_1 (1); }
+ − 1221 else if (n < 100) { DIGITS_2 (10); }
+ − 1222 else if (n < 1000) { DIGITS_3 (100); }
+ − 1223 else if (n < 10000) { DIGITS_4 (1000); }
+ − 1224 else if (n < 100000) { DIGITS_5 (10000); }
+ − 1225 else if (n < 1000000) { DIGITS_6 (100000); }
+ − 1226 else if (n < 10000000) { DIGITS_7 (1000000); }
+ − 1227 else if (n < 100000000) { DIGITS_8 (10000000); }
+ − 1228 else if (n < 1000000000) { DIGITS_9 (100000000); }
+ − 1229 #if SIZEOF_LONG == 4
+ − 1230 /* ``if (1)'' serves only to preserve editor indentation. */
+ − 1231 else if (1) { DIGITS_10 (1000000000); }
+ − 1232 #else /* SIZEOF_LONG != 4 */
+ − 1233 else if (n < 10000000000L) { DIGITS_10 (1000000000L); }
+ − 1234 else if (n < 100000000000L) { DIGITS_11 (10000000000L); }
+ − 1235 else if (n < 1000000000000L) { DIGITS_12 (100000000000L); }
+ − 1236 else if (n < 10000000000000L) { DIGITS_13 (1000000000000L); }
+ − 1237 else if (n < 100000000000000L) { DIGITS_14 (10000000000000L); }
+ − 1238 else if (n < 1000000000000000L) { DIGITS_15 (100000000000000L); }
+ − 1239 else if (n < 10000000000000000L) { DIGITS_16 (1000000000000000L); }
+ − 1240 else if (n < 100000000000000000L) { DIGITS_17 (10000000000000000L); }
+ − 1241 else if (n < 1000000000000000000L) { DIGITS_18 (100000000000000000L); }
+ − 1242 else { DIGITS_19 (1000000000000000000L); }
+ − 1243 #endif /* SIZEOF_LONG != 4 */
+ − 1244
428
+ − 1245 *p = '\0';
+ − 1246 #endif /* (SIZEOF_LONG == 4) || (SIZEOF_LONG == 8) */
+ − 1247 }
577
+ − 1248
+ − 1249 #undef ONE_DIGIT
+ − 1250 #undef ONE_DIGIT_ADVANCE
+ − 1251
+ − 1252 #undef DIGITS_1
+ − 1253 #undef DIGITS_2
+ − 1254 #undef DIGITS_3
+ − 1255 #undef DIGITS_4
+ − 1256 #undef DIGITS_5
+ − 1257 #undef DIGITS_6
+ − 1258 #undef DIGITS_7
+ − 1259 #undef DIGITS_8
+ − 1260 #undef DIGITS_9
+ − 1261 #undef DIGITS_10
+ − 1262 #undef DIGITS_11
+ − 1263 #undef DIGITS_12
+ − 1264 #undef DIGITS_13
+ − 1265 #undef DIGITS_14
+ − 1266 #undef DIGITS_15
+ − 1267 #undef DIGITS_16
+ − 1268 #undef DIGITS_17
+ − 1269 #undef DIGITS_18
+ − 1270 #undef DIGITS_19
428
+ − 1271
+ − 1272 static void
442
+ − 1273 print_vector_internal (const char *start, const char *end,
428
+ − 1274 Lisp_Object obj,
+ − 1275 Lisp_Object printcharfun, int escapeflag)
+ − 1276 {
+ − 1277 /* This function can GC */
+ − 1278 int i;
+ − 1279 int len = XVECTOR_LENGTH (obj);
+ − 1280 int last = len;
+ − 1281 struct gcpro gcpro1, gcpro2;
+ − 1282 GCPRO2 (obj, printcharfun);
+ − 1283
+ − 1284 if (INTP (Vprint_length))
+ − 1285 {
+ − 1286 int max = XINT (Vprint_length);
+ − 1287 if (max < len) last = max;
+ − 1288 }
+ − 1289
826
+ − 1290 write_c_string (printcharfun, start);
428
+ − 1291 for (i = 0; i < last; i++)
+ − 1292 {
+ − 1293 Lisp_Object elt = XVECTOR_DATA (obj)[i];
826
+ − 1294 if (i != 0) write_c_string (printcharfun, " ");
428
+ − 1295 print_internal (elt, printcharfun, escapeflag);
+ − 1296 }
+ − 1297 UNGCPRO;
+ − 1298 if (last != len)
826
+ − 1299 write_c_string (printcharfun, " ...");
+ − 1300 write_c_string (printcharfun, end);
428
+ − 1301 }
+ − 1302
+ − 1303 void
+ − 1304 print_cons (Lisp_Object obj, Lisp_Object printcharfun, int escapeflag)
+ − 1305 {
+ − 1306 /* This function can GC */
+ − 1307 struct gcpro gcpro1, gcpro2;
+ − 1308
+ − 1309 /* If print_readably is on, print (quote -foo-) as '-foo-
+ − 1310 (Yeah, this should really be what print-pretty does, but we
+ − 1311 don't have the rest of a pretty printer, and this actually
+ − 1312 has non-negligible impact on size/speed of .elc files.)
+ − 1313 */
+ − 1314 if (print_readably &&
+ − 1315 EQ (XCAR (obj), Qquote) &&
+ − 1316 CONSP (XCDR (obj)) &&
+ − 1317 NILP (XCDR (XCDR (obj))))
+ − 1318 {
+ − 1319 obj = XCAR (XCDR (obj));
+ − 1320 GCPRO2 (obj, printcharfun);
826
+ − 1321 write_c_string (printcharfun, "\'");
428
+ − 1322 UNGCPRO;
+ − 1323 print_internal (obj, printcharfun, escapeflag);
+ − 1324 return;
+ − 1325 }
+ − 1326
+ − 1327 GCPRO2 (obj, printcharfun);
826
+ − 1328 write_c_string (printcharfun, "(");
428
+ − 1329
+ − 1330 {
+ − 1331 int len;
+ − 1332 int max = INTP (Vprint_length) ? XINT (Vprint_length) : INT_MAX;
+ − 1333 Lisp_Object tortoise;
+ − 1334 /* Use tortoise/hare to make sure circular lists don't infloop */
+ − 1335
+ − 1336 for (tortoise = obj, len = 0;
+ − 1337 CONSP (obj);
+ − 1338 obj = XCDR (obj), len++)
+ − 1339 {
+ − 1340 if (len > 0)
826
+ − 1341 write_c_string (printcharfun, " ");
428
+ − 1342 if (EQ (obj, tortoise) && len > 0)
+ − 1343 {
+ − 1344 if (print_readably)
563
+ − 1345 printing_unreadable_object ("circular list");
428
+ − 1346 else
826
+ − 1347 write_c_string (printcharfun, "... <circular list>");
428
+ − 1348 break;
+ − 1349 }
+ − 1350 if (len & 1)
+ − 1351 tortoise = XCDR (tortoise);
+ − 1352 if (len > max)
+ − 1353 {
826
+ − 1354 write_c_string (printcharfun, "...");
428
+ − 1355 break;
+ − 1356 }
+ − 1357 print_internal (XCAR (obj), printcharfun, escapeflag);
+ − 1358 }
+ − 1359 }
+ − 1360 if (!LISTP (obj))
+ − 1361 {
826
+ − 1362 write_c_string (printcharfun, " . ");
428
+ − 1363 print_internal (obj, printcharfun, escapeflag);
+ − 1364 }
+ − 1365 UNGCPRO;
+ − 1366
826
+ − 1367 write_c_string (printcharfun, ")");
428
+ − 1368 return;
+ − 1369 }
+ − 1370
+ − 1371 void
+ − 1372 print_vector (Lisp_Object obj, Lisp_Object printcharfun, int escapeflag)
+ − 1373 {
+ − 1374 print_vector_internal ("[", "]", obj, printcharfun, escapeflag);
+ − 1375 }
+ − 1376
+ − 1377 void
+ − 1378 print_string (Lisp_Object obj, Lisp_Object printcharfun, int escapeflag)
+ − 1379 {
+ − 1380 /* We distinguish between Bytecounts and Charcounts, to make
+ − 1381 Vprint_string_length work correctly under Mule. */
826
+ − 1382 Charcount size = string_char_length (obj);
428
+ − 1383 Charcount max = size;
793
+ − 1384 Bytecount bcmax = XSTRING_LENGTH (obj);
428
+ − 1385 struct gcpro gcpro1, gcpro2;
+ − 1386 GCPRO2 (obj, printcharfun);
+ − 1387
+ − 1388 if (INTP (Vprint_string_length) &&
+ − 1389 XINT (Vprint_string_length) < max)
+ − 1390 {
+ − 1391 max = XINT (Vprint_string_length);
793
+ − 1392 bcmax = string_index_char_to_byte (obj, max);
428
+ − 1393 }
+ − 1394 if (max < 0)
+ − 1395 {
+ − 1396 max = 0;
+ − 1397 bcmax = 0;
+ − 1398 }
+ − 1399
+ − 1400 if (!escapeflag)
+ − 1401 {
+ − 1402 /* This deals with GC-relocation and Mule. */
+ − 1403 output_string (printcharfun, 0, obj, 0, bcmax);
+ − 1404 if (max < size)
826
+ − 1405 write_c_string (printcharfun, " ...");
428
+ − 1406 }
+ − 1407 else
+ − 1408 {
+ − 1409 Bytecount i, last = 0;
+ − 1410
826
+ − 1411 write_c_string (printcharfun, "\"");
428
+ − 1412 for (i = 0; i < bcmax; i++)
+ − 1413 {
867
+ − 1414 Ibyte ch = string_byte (obj, i);
428
+ − 1415 if (ch == '\"' || ch == '\\'
+ − 1416 || (ch == '\n' && print_escape_newlines))
+ − 1417 {
+ − 1418 if (i > last)
+ − 1419 {
+ − 1420 output_string (printcharfun, 0, obj, last,
+ − 1421 i - last);
+ − 1422 }
+ − 1423 if (ch == '\n')
+ − 1424 {
826
+ − 1425 write_c_string (printcharfun, "\\n");
428
+ − 1426 }
+ − 1427 else
+ − 1428 {
867
+ − 1429 Ibyte temp[2];
826
+ − 1430 write_c_string (printcharfun, "\\");
428
+ − 1431 /* This is correct for Mule because the
+ − 1432 character is either \ or " */
826
+ − 1433 temp[0] = string_byte (obj, i);
+ − 1434 temp[1] = '\0';
+ − 1435 write_string (printcharfun, temp);
428
+ − 1436 }
+ − 1437 last = i + 1;
+ − 1438 }
+ − 1439 }
+ − 1440 if (bcmax > last)
+ − 1441 {
+ − 1442 output_string (printcharfun, 0, obj, last,
+ − 1443 bcmax - last);
+ − 1444 }
+ − 1445 if (max < size)
826
+ − 1446 write_c_string (printcharfun, " ...");
+ − 1447 write_c_string (printcharfun, "\"");
428
+ − 1448 }
+ − 1449 UNGCPRO;
+ − 1450 }
+ − 1451
+ − 1452 static void
+ − 1453 default_object_printer (Lisp_Object obj, Lisp_Object printcharfun,
2286
+ − 1454 int UNUSED (escapeflag))
428
+ − 1455 {
2720
+ − 1456 #ifdef MC_ALLOC
+ − 1457 struct lrecord_header *header =
+ − 1458 (struct lrecord_header *) XPNTR (obj);
+ − 1459 #else /* not MC_ALLOC */
428
+ − 1460 struct lcrecord_header *header =
+ − 1461 (struct lcrecord_header *) XPNTR (obj);
2720
+ − 1462 #endif /* not MC_ALLOC */
428
+ − 1463
+ − 1464 if (print_readably)
563
+ − 1465 printing_unreadable_object
+ − 1466 ("#<%s 0x%x>",
2720
+ − 1467 #ifdef MC_ALLOC
+ − 1468 LHEADER_IMPLEMENTATION (header)->name,
+ − 1469 #else /* not MC_ALLOC */
563
+ − 1470 LHEADER_IMPLEMENTATION (&header->lheader)->name,
2720
+ − 1471 #endif /* not MC_ALLOC */
563
+ − 1472 header->uid);
428
+ − 1473
800
+ − 1474 write_fmt_string (printcharfun, "#<%s 0x%x>",
2720
+ − 1475 #ifdef MC_ALLOC
+ − 1476 LHEADER_IMPLEMENTATION (header)->name,
+ − 1477 #else /* not MC_ALLOC */
800
+ − 1478 LHEADER_IMPLEMENTATION (&header->lheader)->name,
2720
+ − 1479 #endif /* not MC_ALLOC */
800
+ − 1480 header->uid);
428
+ − 1481 }
+ − 1482
+ − 1483 void
+ − 1484 internal_object_printer (Lisp_Object obj, Lisp_Object printcharfun,
2286
+ − 1485 int UNUSED (escapeflag))
428
+ − 1486 {
800
+ − 1487 write_fmt_string (printcharfun,
+ − 1488 "#<INTERNAL OBJECT (XEmacs bug?) (%s) 0x%lx>",
+ − 1489 XRECORD_LHEADER_IMPLEMENTATION (obj)->name,
+ − 1490 (unsigned long) XPNTR (obj));
428
+ − 1491 }
+ − 1492
1204
+ − 1493 enum printing_badness
+ − 1494 {
+ − 1495 BADNESS_INTEGER_OBJECT,
+ − 1496 BADNESS_POINTER_OBJECT,
+ − 1497 BADNESS_NO_TYPE
+ − 1498 };
+ − 1499
+ − 1500 static void
+ − 1501 printing_major_badness (Lisp_Object printcharfun,
2367
+ − 1502 Ascbyte *badness_string, int type, void *val,
1204
+ − 1503 enum printing_badness badness)
+ − 1504 {
+ − 1505 Ibyte buf[666];
+ − 1506
+ − 1507 switch (badness)
+ − 1508 {
+ − 1509 case BADNESS_INTEGER_OBJECT:
+ − 1510 qxesprintf (buf, "%s %d object %ld", badness_string, type,
+ − 1511 (EMACS_INT) val);
+ − 1512 break;
+ − 1513
+ − 1514 case BADNESS_POINTER_OBJECT:
+ − 1515 qxesprintf (buf, "%s %d object %p", badness_string, type, val);
+ − 1516 break;
+ − 1517
+ − 1518 case BADNESS_NO_TYPE:
+ − 1519 qxesprintf (buf, "%s object %p", badness_string, val);
+ − 1520 break;
+ − 1521 }
+ − 1522
+ − 1523 /* Don't abort or signal if called from debug_print() or already
+ − 1524 crashing */
2367
+ − 1525 if (!inhibit_non_essential_conversion_operations)
1204
+ − 1526 {
+ − 1527 #ifdef ERROR_CHECK_TYPES
2500
+ − 1528 ABORT ();
1204
+ − 1529 #else /* not ERROR_CHECK_TYPES */
+ − 1530 if (print_readably)
+ − 1531 signal_ferror (Qinternal_error, "printing %s", buf);
+ − 1532 #endif /* not ERROR_CHECK_TYPES */
+ − 1533 }
+ − 1534 write_fmt_string (printcharfun,
+ − 1535 "#<EMACS BUG: %s Save your buffers immediately and "
+ − 1536 "please report this bug>", buf);
+ − 1537 }
+ − 1538
428
+ − 1539 void
+ − 1540 print_internal (Lisp_Object obj, Lisp_Object printcharfun, int escapeflag)
+ − 1541 {
+ − 1542 /* This function can GC */
2001
+ − 1543 int specdepth = 0;
1204
+ − 1544 struct gcpro gcpro1, gcpro2;
428
+ − 1545
+ − 1546 QUIT;
+ − 1547
771
+ − 1548 #ifdef NO_PRINT_DURING_GC
428
+ − 1549 /* Emacs won't print while GCing, but an external debugger might */
+ − 1550 if (gc_in_progress) return;
771
+ − 1551 #endif
+ − 1552
1204
+ − 1553 /* Just to be safe ... */
+ − 1554 GCPRO2 (obj, printcharfun);
428
+ − 1555
+ − 1556 #ifdef I18N3
+ − 1557 /* #### Both input and output streams should have a flag associated
+ − 1558 with them indicating whether output to that stream, or strings
+ − 1559 read from the stream, get translated using Fgettext(). Such a
+ − 1560 stream is called a "translating stream". For the minibuffer and
+ − 1561 external-debugging-output this is always true on output, and
+ − 1562 with-output-to-temp-buffer sets the flag to true for the buffer
+ − 1563 it creates. This flag should also be user-settable. Perhaps it
+ − 1564 should be split up into two flags, one for input and one for
+ − 1565 output. */
+ − 1566 #endif
+ − 1567
+ − 1568 /* Detect circularities and truncate them.
+ − 1569 No need to offer any alternative--this is better than an error. */
+ − 1570 if (CONSP (obj) || VECTORP (obj) || COMPILED_FUNCTIONP (obj))
+ − 1571 {
+ − 1572 int i;
+ − 1573 for (i = 0; i < print_depth; i++)
+ − 1574 if (EQ (obj, being_printed[i]))
+ − 1575 {
603
+ − 1576 char buf[DECIMAL_PRINT_SIZE (long) + 1];
428
+ − 1577 *buf = '#';
+ − 1578 long_to_string (buf + 1, i);
826
+ − 1579 write_c_string (printcharfun, buf);
1204
+ − 1580 UNGCPRO;
428
+ − 1581 return;
+ − 1582 }
+ − 1583 }
+ − 1584
+ − 1585 being_printed[print_depth] = obj;
+ − 1586
1957
+ − 1587 /* Avoid calling internal_bind_int, which conses, when called from
+ − 1588 debug_prin1. In that case, we have bound print_depth to 0 anyway. */
2367
+ − 1589 if (!inhibit_non_essential_conversion_operations)
1957
+ − 1590 {
+ − 1591 specdepth = internal_bind_int (&print_depth, print_depth + 1);
+ − 1592
+ − 1593 if (print_depth > PRINT_CIRCLE)
+ − 1594 signal_error (Qstack_overflow, "Apparently circular structure being printed", Qunbound);
+ − 1595 }
428
+ − 1596
+ − 1597 switch (XTYPE (obj))
+ − 1598 {
+ − 1599 case Lisp_Type_Int_Even:
+ − 1600 case Lisp_Type_Int_Odd:
+ − 1601 {
603
+ − 1602 char buf[DECIMAL_PRINT_SIZE (EMACS_INT)];
428
+ − 1603 long_to_string (buf, XINT (obj));
826
+ − 1604 write_c_string (printcharfun, buf);
428
+ − 1605 break;
+ − 1606 }
+ − 1607
+ − 1608 case Lisp_Type_Char:
+ − 1609 {
+ − 1610 /* God intended that this be #\..., you know. */
+ − 1611 char buf[16];
867
+ − 1612 Ichar ch = XCHAR (obj);
428
+ − 1613 char *p = buf;
+ − 1614 *p++ = '?';
434
+ − 1615 if (ch < 32)
+ − 1616 {
+ − 1617 *p++ = '\\';
+ − 1618 switch (ch)
+ − 1619 {
+ − 1620 case '\t': *p++ = 't'; break;
+ − 1621 case '\n': *p++ = 'n'; break;
+ − 1622 case '\r': *p++ = 'r'; break;
+ − 1623 default:
+ − 1624 *p++ = '^';
+ − 1625 *p++ = ch + 64;
+ − 1626 if ((ch + 64) == '\\')
+ − 1627 *p++ = '\\';
+ − 1628 break;
+ − 1629 }
+ − 1630 }
+ − 1631 else if (ch < 127)
428
+ − 1632 {
434
+ − 1633 /* syntactically special characters should be escaped. */
+ − 1634 switch (ch)
+ − 1635 {
+ − 1636 case ' ':
+ − 1637 case '"':
+ − 1638 case '#':
+ − 1639 case '\'':
+ − 1640 case '(':
+ − 1641 case ')':
+ − 1642 case ',':
+ − 1643 case '.':
+ − 1644 case ';':
+ − 1645 case '?':
+ − 1646 case '[':
+ − 1647 case '\\':
+ − 1648 case ']':
+ − 1649 case '`':
+ − 1650 *p++ = '\\';
+ − 1651 }
+ − 1652 *p++ = ch;
428
+ − 1653 }
+ − 1654 else if (ch == 127)
434
+ − 1655 {
+ − 1656 *p++ = '\\', *p++ = '^', *p++ = '?';
+ − 1657 }
+ − 1658 else if (ch < 160)
428
+ − 1659 {
+ − 1660 *p++ = '\\', *p++ = '^';
867
+ − 1661 p += set_itext_ichar ((Ibyte *) p, ch + 64);
428
+ − 1662 }
+ − 1663 else
434
+ − 1664 {
867
+ − 1665 p += set_itext_ichar ((Ibyte *) p, ch);
434
+ − 1666 }
440
+ − 1667
867
+ − 1668 output_string (printcharfun, (Ibyte *) buf, Qnil, 0, p - buf);
434
+ − 1669
428
+ − 1670 break;
+ − 1671 }
+ − 1672
+ − 1673 case Lisp_Type_Record:
+ − 1674 {
+ − 1675 struct lrecord_header *lheader = XRECORD_LHEADER (obj);
1204
+ − 1676
+ − 1677 /* Try to check for various sorts of bogus pointers if we're in a
+ − 1678 situation where it may be likely -- i.e. called from
+ − 1679 debug_print() or we're already crashing. In such cases,
+ − 1680 (further) crashing is counterproductive. */
428
+ − 1681
2367
+ − 1682 if (inhibit_non_essential_conversion_operations &&
1204
+ − 1683 !debug_can_access_memory (lheader, sizeof (*lheader)))
+ − 1684 {
+ − 1685 write_fmt_string (printcharfun, "#<EMACS BUG: BAD MEMORY %p>",
+ − 1686 lheader);
+ − 1687 break;
+ − 1688 }
+ − 1689
+ − 1690 if (CONSP (obj) || VECTORP (obj))
428
+ − 1691 {
+ − 1692 /* If deeper than spec'd depth, print placeholder. */
+ − 1693 if (INTP (Vprint_level)
+ − 1694 && print_depth > XINT (Vprint_level))
+ − 1695 {
826
+ − 1696 write_c_string (printcharfun, "...");
428
+ − 1697 break;
+ − 1698 }
+ − 1699 }
+ − 1700
2720
+ − 1701 #ifndef MC_ALLOC
1204
+ − 1702 if (lheader->type == lrecord_type_free)
+ − 1703 {
+ − 1704 printing_major_badness (printcharfun, "freed lrecord", 0,
+ − 1705 lheader, BADNESS_NO_TYPE);
+ − 1706 break;
+ − 1707 }
+ − 1708 else if (lheader->type == lrecord_type_undefined)
+ − 1709 {
+ − 1710 printing_major_badness (printcharfun, "lrecord_type_undefined", 0,
+ − 1711 lheader, BADNESS_NO_TYPE);
+ − 1712 break;
+ − 1713 }
2720
+ − 1714 #endif /* not MC_ALLOC */
1204
+ − 1715 else if ((int) (lheader->type) >= lrecord_type_count)
+ − 1716 {
+ − 1717 printing_major_badness (printcharfun, "illegal lrecord type",
+ − 1718 (int) (lheader->type),
+ − 1719 lheader, BADNESS_POINTER_OBJECT);
+ − 1720 break;
+ − 1721 }
+ − 1722
+ − 1723 /* Further checks for bad memory in critical situations. We don't
+ − 1724 normally do these because they may be expensive or weird
+ − 1725 (e.g. under Unix we typically have to set a SIGSEGV handler and
+ − 1726 try to trigger a seg fault). */
+ − 1727
2367
+ − 1728 if (inhibit_non_essential_conversion_operations)
1204
+ − 1729 {
+ − 1730 if (!debug_can_access_memory
+ − 1731 (lheader, detagged_lisp_object_size (lheader)))
+ − 1732 {
+ − 1733 write_fmt_string (printcharfun,
+ − 1734 "#<EMACS BUG: type %s BAD MEMORY %p>",
+ − 1735 LHEADER_IMPLEMENTATION (lheader)->name,
+ − 1736 lheader);
+ − 1737 break;
+ − 1738 }
+ − 1739
+ − 1740 if (STRINGP (obj))
+ − 1741 {
+ − 1742 Lisp_String *l = (Lisp_String *) lheader;
+ − 1743 if (!debug_can_access_memory (l->data_, l->size_))
+ − 1744 {
+ − 1745 write_fmt_string
+ − 1746 (printcharfun,
+ − 1747 "#<EMACS BUG: %p (BAD STRING DATA %p)>",
+ − 1748 lheader, l->data_);
+ − 1749 break;
+ − 1750 }
+ − 1751 }
+ − 1752 }
+ − 1753
428
+ − 1754 if (LHEADER_IMPLEMENTATION (lheader)->printer)
+ − 1755 ((LHEADER_IMPLEMENTATION (lheader)->printer)
+ − 1756 (obj, printcharfun, escapeflag));
+ − 1757 else
+ − 1758 default_object_printer (obj, printcharfun, escapeflag);
+ − 1759 break;
+ − 1760 }
+ − 1761
+ − 1762 default:
+ − 1763 {
+ − 1764 /* We're in trouble if this happens! */
1204
+ − 1765 printing_major_badness (printcharfun, "illegal data type", XTYPE (obj),
+ − 1766 LISP_TO_VOID (obj), BADNESS_INTEGER_OBJECT);
428
+ − 1767 break;
+ − 1768 }
+ − 1769 }
+ − 1770
2367
+ − 1771 if (!inhibit_non_essential_conversion_operations)
1957
+ − 1772 unbind_to (specdepth);
1204
+ − 1773 UNGCPRO;
428
+ − 1774 }
+ − 1775
+ − 1776 void
2286
+ − 1777 print_float (Lisp_Object obj, Lisp_Object printcharfun,
+ − 1778 int UNUSED (escapeflag))
428
+ − 1779 {
+ − 1780 char pigbuf[350]; /* see comments in float_to_string */
+ − 1781
+ − 1782 float_to_string (pigbuf, XFLOAT_DATA (obj));
826
+ − 1783 write_c_string (printcharfun, pigbuf);
428
+ − 1784 }
+ − 1785
+ − 1786 void
+ − 1787 print_symbol (Lisp_Object obj, Lisp_Object printcharfun, int escapeflag)
+ − 1788 {
+ − 1789 /* This function can GC */
+ − 1790 /* #### Bug!! (intern "") isn't printed in some distinguished way */
+ − 1791 /* #### (the reader also loses on it) */
793
+ − 1792 Lisp_Object name = symbol_name (XSYMBOL (obj));
+ − 1793 Bytecount size = XSTRING_LENGTH (name);
428
+ − 1794 struct gcpro gcpro1, gcpro2;
+ − 1795
+ − 1796 if (!escapeflag)
+ − 1797 {
+ − 1798 /* This deals with GC-relocation */
793
+ − 1799 output_string (printcharfun, 0, name, 0, size);
428
+ − 1800 return;
+ − 1801 }
+ − 1802 GCPRO2 (obj, printcharfun);
+ − 1803
+ − 1804 /* If we print an uninterned symbol as part of a complex object and
+ − 1805 the flag print-gensym is non-nil, prefix it with #n= to read the
+ − 1806 object back with the #n# reader syntax later if needed. */
+ − 1807 if (!NILP (Vprint_gensym)
442
+ − 1808 /* #### Test whether this produces a noticeable slow-down for
428
+ − 1809 printing when print-gensym is non-nil. */
+ − 1810 && !EQ (obj, oblookup (Vobarray,
793
+ − 1811 XSTRING_DATA (symbol_name (XSYMBOL (obj))),
+ − 1812 XSTRING_LENGTH (symbol_name (XSYMBOL (obj))))))
428
+ − 1813 {
+ − 1814 if (print_depth > 1)
+ − 1815 {
+ − 1816 Lisp_Object tem = Fassq (obj, Vprint_gensym_alist);
+ − 1817 if (CONSP (tem))
+ − 1818 {
826
+ − 1819 write_c_string (printcharfun, "#");
428
+ − 1820 print_internal (XCDR (tem), printcharfun, escapeflag);
826
+ − 1821 write_c_string (printcharfun, "#");
446
+ − 1822 UNGCPRO;
428
+ − 1823 return;
+ − 1824 }
+ − 1825 else
+ − 1826 {
+ − 1827 if (CONSP (Vprint_gensym_alist))
+ − 1828 {
+ − 1829 /* Vprint_gensym_alist is exposed to Lisp, so we
+ − 1830 have to be careful. */
+ − 1831 CHECK_CONS (XCAR (Vprint_gensym_alist));
+ − 1832 CHECK_INT (XCDR (XCAR (Vprint_gensym_alist)));
793
+ − 1833 tem = make_int (XINT (XCDR (XCAR (Vprint_gensym_alist))) + 1);
428
+ − 1834 }
+ − 1835 else
793
+ − 1836 tem = make_int (1);
428
+ − 1837 Vprint_gensym_alist = Fcons (Fcons (obj, tem), Vprint_gensym_alist);
+ − 1838
826
+ − 1839 write_c_string (printcharfun, "#");
428
+ − 1840 print_internal (tem, printcharfun, escapeflag);
826
+ − 1841 write_c_string (printcharfun, "=");
428
+ − 1842 }
+ − 1843 }
826
+ − 1844 write_c_string (printcharfun, "#:");
428
+ − 1845 }
+ − 1846
+ − 1847 /* Does it look like an integer or a float? */
+ − 1848 {
867
+ − 1849 Ibyte *data = XSTRING_DATA (name);
428
+ − 1850 Bytecount confusing = 0;
+ − 1851
+ − 1852 if (size == 0)
+ − 1853 goto not_yet_confused; /* Really confusing */
+ − 1854 else if (isdigit (data[0]))
+ − 1855 confusing = 0;
+ − 1856 else if (size == 1)
+ − 1857 goto not_yet_confused;
+ − 1858 else if (data[0] == '-' || data[0] == '+')
+ − 1859 confusing = 1;
+ − 1860 else
+ − 1861 goto not_yet_confused;
+ − 1862
+ − 1863 for (; confusing < size; confusing++)
+ − 1864 {
+ − 1865 if (!isdigit (data[confusing]))
+ − 1866 {
+ − 1867 confusing = 0;
+ − 1868 break;
+ − 1869 }
+ − 1870 }
+ − 1871 not_yet_confused:
+ − 1872
+ − 1873 if (!confusing)
+ − 1874 /* #### Ugh, this is needlessly complex and slow for what we
+ − 1875 need here. It might be a good idea to copy equivalent code
+ − 1876 from FSF. --hniksic */
+ − 1877 confusing = isfloat_string ((char *) data);
+ − 1878 if (confusing)
826
+ − 1879 write_c_string (printcharfun, "\\");
428
+ − 1880 }
+ − 1881
+ − 1882 {
+ − 1883 Bytecount i;
+ − 1884 Bytecount last = 0;
+ − 1885
+ − 1886 for (i = 0; i < size; i++)
+ − 1887 {
826
+ − 1888 switch (string_byte (name, i))
428
+ − 1889 {
+ − 1890 case 0: case 1: case 2: case 3:
+ − 1891 case 4: case 5: case 6: case 7:
+ − 1892 case 8: case 9: case 10: case 11:
+ − 1893 case 12: case 13: case 14: case 15:
+ − 1894 case 16: case 17: case 18: case 19:
+ − 1895 case 20: case 21: case 22: case 23:
+ − 1896 case 24: case 25: case 26: case 27:
+ − 1897 case 28: case 29: case 30: case 31:
+ − 1898 case ' ': case '\"': case '\\': case '\'':
+ − 1899 case ';': case '#' : case '(' : case ')':
+ − 1900 case ',': case '.' : case '`' :
+ − 1901 case '[': case ']' : case '?' :
+ − 1902 if (i > last)
793
+ − 1903 output_string (printcharfun, 0, name, last, i - last);
826
+ − 1904 write_c_string (printcharfun, "\\");
428
+ − 1905 last = i;
+ − 1906 }
+ − 1907 }
793
+ − 1908 output_string (printcharfun, 0, name, last, size - last);
428
+ − 1909 }
+ − 1910 UNGCPRO;
+ − 1911 }
+ − 1912
+ − 1913
442
+ − 1914 /* Useful on systems or in places where writing to stdout is unavailable or
+ − 1915 not working. */
428
+ − 1916
+ − 1917 static int alternate_do_pointer;
1957
+ − 1918 static int alternate_do_size;
+ − 1919 static char *alternate_do_string;
428
+ − 1920
+ − 1921 DEFUN ("alternate-debugging-output", Falternate_debugging_output, 1, 1, 0, /*
+ − 1922 Append CHARACTER to the array `alternate_do_string'.
+ − 1923 This can be used in place of `external-debugging-output' as a function
+ − 1924 to be passed to `print'. Before calling `print', set `alternate_do_pointer'
+ − 1925 to 0.
+ − 1926 */
+ − 1927 (character))
+ − 1928 {
867
+ − 1929 Ibyte str[MAX_ICHAR_LEN];
428
+ − 1930 Bytecount len;
+ − 1931
+ − 1932 CHECK_CHAR_COERCE_INT (character);
867
+ − 1933 len = set_itext_ichar (str, XCHAR (character));
771
+ − 1934 write_string_to_alternate_debugging_output (str, len);
+ − 1935
+ − 1936 return character;
+ − 1937 }
+ − 1938
+ − 1939 static void
1346
+ − 1940 write_string_to_alternate_debugging_output (const Ibyte *str, Bytecount len)
771
+ − 1941 {
+ − 1942 int extlen;
+ − 1943 const Extbyte *extptr;
+ − 1944 #if 0 /* We want to see the internal representation, don't we? */
2367
+ − 1945 if (initialized && !inhibit_non_essential_conversion_operations)
771
+ − 1946 TO_EXTERNAL_FORMAT (DATA, (str, len),
+ − 1947 ALLOCA, (extptr, extlen),
+ − 1948 Qterminal);
+ − 1949 else
+ − 1950 #endif /* 0 */
+ − 1951 {
+ − 1952 extlen = len;
+ − 1953 extptr = (Extbyte *) str;
+ − 1954 }
1957
+ − 1955
+ − 1956 /* If not yet initialized, just skip it. */
+ − 1957 if (alternate_do_string == NULL)
+ − 1958 return;
+ − 1959
+ − 1960 if (alternate_do_pointer + extlen >= alternate_do_size)
+ − 1961 {
+ − 1962 alternate_do_size =
+ − 1963 max(alternate_do_size * 2, alternate_do_pointer + extlen + 1);
+ − 1964 XREALLOC_ARRAY (alternate_do_string, char, alternate_do_size);
+ − 1965 }
428
+ − 1966 memcpy (alternate_do_string + alternate_do_pointer, extptr, extlen);
+ − 1967 alternate_do_pointer += extlen;
+ − 1968 alternate_do_string[alternate_do_pointer] = 0;
+ − 1969 }
+ − 1970
1346
+ − 1971
+ − 1972 DEFUN ("set-device-clear-left-side", Fset_device_clear_left_side, 2, 2, 0, /*
+ − 1973 Set whether to output a newline before the next output to a stream device.
+ − 1974 This will happen only if the most recently-outputted character was not
+ − 1975 a newline -- i.e. it will make sure the left side is "clear" of text.
+ − 1976 */
+ − 1977 (device, value))
+ − 1978 {
+ − 1979 if (!NILP (device))
+ − 1980 CHECK_LIVE_DEVICE (device);
+ − 1981 if (NILP (device) || DEVICE_STREAM_P (XDEVICE (device)))
+ − 1982 /* #### This should be per-device */
+ − 1983 stdout_clear_before_next_output = !NILP (value);
+ − 1984 return Qnil;
+ − 1985 }
+ − 1986
+ − 1987 DEFUN ("device-left-side-clear-p", Fdevice_left_side_clear_p, 0, 1, 0, /*
+ − 1988 For stream devices, true if the most recent-outputted character was a newline.
+ − 1989 */
+ − 1990 (device))
+ − 1991 {
+ − 1992 if (!NILP (device))
+ − 1993 CHECK_LIVE_DEVICE (device);
+ − 1994 if (NILP (device) || DEVICE_STREAM_P (XDEVICE (device)))
+ − 1995 /* #### This should be per-device */
+ − 1996 return stdout_needs_newline ? Qt : Qnil;
+ − 1997 return Qnil;
+ − 1998 }
+ − 1999
428
+ − 2000 DEFUN ("external-debugging-output", Fexternal_debugging_output, 1, 3, 0, /*
+ − 2001 Write CHAR-OR-STRING to stderr or stdout.
+ − 2002 If optional arg STDOUT-P is non-nil, write to stdout; otherwise, write
+ − 2003 to stderr. You can use this function to write directly to the terminal.
+ − 2004 This function can be used as the STREAM argument of Fprint() or the like.
+ − 2005
442
+ − 2006 Under MS Windows, this writes output to the console window (which is
+ − 2007 created, if necessary), unless XEmacs is being run noninteractively
+ − 2008 \(i.e. using the `-batch' argument).
+ − 2009
428
+ − 2010 If you have opened a termscript file (using `open-termscript'), then
+ − 2011 the output also will be logged to this file.
+ − 2012 */
+ − 2013 (char_or_string, stdout_p, device))
+ − 2014 {
+ − 2015 FILE *file = 0;
+ − 2016 struct console *con = 0;
+ − 2017
+ − 2018 if (NILP (device))
+ − 2019 {
+ − 2020 if (!NILP (stdout_p))
+ − 2021 file = stdout;
+ − 2022 else
+ − 2023 file = stderr;
+ − 2024 }
+ − 2025 else
+ − 2026 {
+ − 2027 CHECK_LIVE_DEVICE (device);
+ − 2028 if (!DEVICE_TTY_P (XDEVICE (device)) &&
+ − 2029 !DEVICE_STREAM_P (XDEVICE (device)))
563
+ − 2030 wtaerror ("Must be tty or stream device", device);
428
+ − 2031 con = XCONSOLE (DEVICE_CONSOLE (XDEVICE (device)));
+ − 2032 if (DEVICE_TTY_P (XDEVICE (device)))
+ − 2033 file = 0;
+ − 2034 else if (!NILP (stdout_p))
+ − 2035 file = CONSOLE_STREAM_DATA (con)->out;
+ − 2036 else
+ − 2037 file = CONSOLE_STREAM_DATA (con)->err;
+ − 2038 }
+ − 2039
+ − 2040 if (STRINGP (char_or_string))
+ − 2041 write_string_to_stdio_stream (file, con,
+ − 2042 XSTRING_DATA (char_or_string),
771
+ − 2043 XSTRING_LENGTH (char_or_string),
+ − 2044 print_unbuffered);
428
+ − 2045 else
+ − 2046 {
867
+ − 2047 Ibyte str[MAX_ICHAR_LEN];
428
+ − 2048 Bytecount len;
+ − 2049
+ − 2050 CHECK_CHAR_COERCE_INT (char_or_string);
867
+ − 2051 len = set_itext_ichar (str, XCHAR (char_or_string));
771
+ − 2052 write_string_to_stdio_stream (file, con, str, len, print_unbuffered);
428
+ − 2053 }
+ − 2054
+ − 2055 return char_or_string;
+ − 2056 }
+ − 2057
+ − 2058 DEFUN ("open-termscript", Fopen_termscript, 1, 1, "FOpen termscript file: ", /*
444
+ − 2059 Start writing all terminal output to FILENAME as well as the terminal.
+ − 2060 FILENAME = nil means just close any termscript file currently open.
428
+ − 2061 */
444
+ − 2062 (filename))
428
+ − 2063 {
+ − 2064 /* This function can GC */
+ − 2065 if (termscript != 0)
+ − 2066 {
771
+ − 2067 retry_fclose (termscript);
444
+ − 2068 termscript = 0;
+ − 2069 }
+ − 2070
+ − 2071 if (! NILP (filename))
+ − 2072 {
+ − 2073 filename = Fexpand_file_name (filename, Qnil);
771
+ − 2074 termscript = qxe_fopen (XSTRING_DATA (filename), "w");
428
+ − 2075 if (termscript == NULL)
563
+ − 2076 report_file_error ("Opening termscript", filename);
428
+ − 2077 }
+ − 2078 return Qnil;
+ − 2079 }
+ − 2080
440
+ − 2081 static int debug_print_length = 50;
+ − 2082 static int debug_print_level = 15;
+ − 2083 static int debug_print_readably = -1;
428
+ − 2084
1957
+ − 2085 /* Restore values temporarily bound by debug_prin1. We use this approach to
+ − 2086 avoid consing in debug_prin1. That is verboten, since debug_prin1 can be
+ − 2087 called by cons debugging code. */
+ − 2088 static Lisp_Object
2286
+ − 2089 debug_prin1_exit (Lisp_Object UNUSED (ignored))
1957
+ − 2090 {
+ − 2091 struct debug_bindings *bindings =
+ − 2092 (struct debug_bindings *) XOPAQUE (debug_prin1_bindings)->data;
2367
+ − 2093 inhibit_non_essential_conversion_operations =
+ − 2094 bindings->inhibit_non_essential_conversion_operations;
1957
+ − 2095 print_depth = bindings->print_depth;
+ − 2096 print_readably = bindings->print_readably;
+ − 2097 print_unbuffered = bindings->print_unbuffered;
+ − 2098 gc_currently_forbidden = bindings->gc_currently_forbidden;
+ − 2099 Vprint_length = bindings->Vprint_length;
+ − 2100 Vprint_level = bindings->Vprint_level;
+ − 2101 Vinhibit_quit = bindings->Vinhibit_quit;
+ − 2102 return Qnil;
+ − 2103 }
+ − 2104
1346
+ − 2105 /* Print an object, `prin1'-style, to various possible debugging outputs.
+ − 2106 Make sure it's completely unbuffered so that, in the event of a crash
+ − 2107 somewhere, we see as much as possible that happened before it.
+ − 2108 */
428
+ − 2109 static void
1346
+ − 2110 debug_prin1 (Lisp_Object debug_print_obj, int flags)
428
+ − 2111 {
+ − 2112 /* This function can GC */
853
+ − 2113
+ − 2114 /* by doing this, we trick various things that are non-essential
+ − 2115 but might cause crashes into not getting executed. */
1957
+ − 2116 int specdepth;
+ − 2117 struct debug_bindings *bindings =
+ − 2118 (struct debug_bindings *) XOPAQUE (debug_prin1_bindings)->data;
853
+ − 2119
2367
+ − 2120 bindings->inhibit_non_essential_conversion_operations =
+ − 2121 inhibit_non_essential_conversion_operations;
1957
+ − 2122 bindings->print_depth = print_depth;
+ − 2123 bindings->print_readably = print_readably;
+ − 2124 bindings->print_unbuffered = print_unbuffered;
+ − 2125 bindings->gc_currently_forbidden = gc_currently_forbidden;
+ − 2126 bindings->Vprint_length = Vprint_length;
+ − 2127 bindings->Vprint_level = Vprint_level;
+ − 2128 bindings->Vinhibit_quit = Vinhibit_quit;
+ − 2129 specdepth = record_unwind_protect (debug_prin1_exit, Qnil);
+ − 2130
2367
+ − 2131 inhibit_non_essential_conversion_operations = 1;
1957
+ − 2132 print_depth = 0;
+ − 2133 print_readably = debug_print_readably != -1 ? debug_print_readably : 0;
+ − 2134 print_unbuffered++;
428
+ − 2135 if (debug_print_length > 0)
1957
+ − 2136 Vprint_length = make_int (debug_print_length);
428
+ − 2137 if (debug_print_level > 0)
1957
+ − 2138 Vprint_level = make_int (debug_print_level);
+ − 2139 Vinhibit_quit = Qt;
1346
+ − 2140
+ − 2141 if ((flags & EXT_PRINT_STDOUT) || (flags & EXT_PRINT_STDERR))
+ − 2142 print_internal (debug_print_obj, Qexternal_debugging_output, 1);
+ − 2143 if (flags & EXT_PRINT_ALTERNATE)
+ − 2144 print_internal (debug_print_obj, Qalternate_debugging_output, 1);
442
+ − 2145 #ifdef WIN32_NATIVE
1346
+ − 2146 if (flags & EXT_PRINT_MSWINDOWS)
+ − 2147 {
+ − 2148 /* Write out to the debugger, as well */
+ − 2149 print_internal (debug_print_obj, Qmswindows_debugging_output, 1);
+ − 2150 }
442
+ − 2151 #endif
440
+ − 2152
802
+ − 2153 unbind_to (specdepth);
428
+ − 2154 }
+ − 2155
+ − 2156 void
1204
+ − 2157 debug_p4 (Lisp_Object obj)
+ − 2158 {
2367
+ − 2159 inhibit_non_essential_conversion_operations = 1;
1204
+ − 2160 if (STRINGP (obj))
+ − 2161 debug_out ("\"%s\"", XSTRING_DATA (obj));
+ − 2162 else if (CONSP (obj))
+ − 2163 {
+ − 2164 int first = 1;
+ − 2165 do {
+ − 2166 debug_out (first ? "(" : " ");
+ − 2167 first = 0;
+ − 2168 debug_p4 (XCAR (obj));
+ − 2169 obj = XCDR (obj);
+ − 2170 } while (CONSP (obj));
+ − 2171 if (NILP (obj))
+ − 2172 debug_out (")");
+ − 2173 else
+ − 2174 {
+ − 2175 debug_out (" . ");
+ − 2176 debug_p4 (obj);
+ − 2177 debug_out (")");
+ − 2178 }
+ − 2179 }
+ − 2180 else if (VECTORP (obj))
+ − 2181 {
+ − 2182 int size = XVECTOR_LENGTH (obj);
+ − 2183 int i;
+ − 2184 int first = 1;
+ − 2185
+ − 2186 for (i = 0; i < size; i++)
+ − 2187 {
+ − 2188 debug_out (first ? "[" : " ");
+ − 2189 first = 0;
+ − 2190 debug_p4 (XVECTOR_DATA (obj)[i]);
+ − 2191 debug_out ("]");
+ − 2192 }
+ − 2193 }
+ − 2194 else if (SYMBOLP (obj))
+ − 2195 {
+ − 2196 Lisp_Object name = XSYMBOL_NAME (obj);
+ − 2197 if (!STRINGP (name))
+ − 2198 debug_out ("<<bad symbol>>");
+ − 2199 else
+ − 2200 debug_out ("%s", XSTRING_DATA (name));
+ − 2201 }
+ − 2202 else if (INTP (obj))
+ − 2203 {
+ − 2204 debug_out ("%ld", XINT (obj));
+ − 2205 }
+ − 2206 else if (FLOATP (obj))
+ − 2207 {
+ − 2208 debug_out ("%g", XFLOAT_DATA (obj));
+ − 2209 }
+ − 2210 else
+ − 2211 {
+ − 2212 struct lrecord_header *header =
+ − 2213 (struct lrecord_header *) XPNTR (obj);
+ − 2214
+ − 2215 if (header->type >= lrecord_type_last_built_in_type)
+ − 2216 debug_out ("<< bad object type=%d 0x%lx>>", header->type,
+ − 2217 (EMACS_INT) header);
+ − 2218 else
2720
+ − 2219 #ifdef MC_ALLOC
+ − 2220 debug_out ("#<%s 0x%lx>",
+ − 2221 LHEADER_IMPLEMENTATION (header)->name,
+ − 2222 (EMACS_INT) ((struct lrecord_header *) header)->uid);
+ − 2223 #else /* not MC_ALLOC */
1204
+ − 2224 debug_out ("#<%s 0x%lx>",
+ − 2225 LHEADER_IMPLEMENTATION (header)->name,
+ − 2226 LHEADER_IMPLEMENTATION (header)->basic_p ?
+ − 2227 (EMACS_INT) header :
+ − 2228 ((struct lcrecord_header *) header)->uid);
2720
+ − 2229 #endif /* not MC_ALLOC */
1204
+ − 2230 }
+ − 2231
2367
+ − 2232 inhibit_non_essential_conversion_operations = 0;
1204
+ − 2233 }
+ − 2234
1346
+ − 2235 static void
+ − 2236 ext_print_begin (int dest)
+ − 2237 {
+ − 2238 if (dest & EXT_PRINT_ALTERNATE)
+ − 2239 alternate_do_pointer = 0;
+ − 2240 if (dest & (EXT_PRINT_STDERR | EXT_PRINT_STDOUT))
+ − 2241 stdout_clear_before_next_output = 1;
+ − 2242 }
+ − 2243
+ − 2244 static void
+ − 2245 ext_print_end (int dest)
+ − 2246 {
+ − 2247 if (dest & (EXT_PRINT_MSWINDOWS | EXT_PRINT_STDERR | EXT_PRINT_STDOUT))
+ − 2248 external_out (dest & (EXT_PRINT_MSWINDOWS | EXT_PRINT_STDERR |
+ − 2249 EXT_PRINT_STDOUT), "\n");
+ − 2250 }
+ − 2251
+ − 2252 static void
+ − 2253 external_debug_print (Lisp_Object object, int dest)
+ − 2254 {
+ − 2255 ext_print_begin (dest);
+ − 2256 debug_prin1 (object, dest);
+ − 2257 ext_print_end (dest);
+ − 2258 }
+ − 2259
1204
+ − 2260 void
+ − 2261 debug_p3 (Lisp_Object obj)
+ − 2262 {
+ − 2263 debug_p4 (obj);
2367
+ − 2264 inhibit_non_essential_conversion_operations = 1;
1204
+ − 2265 debug_out ("\n");
2367
+ − 2266 inhibit_non_essential_conversion_operations = 0;
1204
+ − 2267 }
+ − 2268
+ − 2269 void
428
+ − 2270 debug_print (Lisp_Object debug_print_obj)
+ − 2271 {
1346
+ − 2272 external_debug_print (debug_print_obj, EXT_PRINT_ALL);
428
+ − 2273 }
+ − 2274
1204
+ − 2275 /* Getting tired of typing debug_print() ... */
+ − 2276 void dp (Lisp_Object debug_print_obj);
+ − 2277 void
+ − 2278 dp (Lisp_Object debug_print_obj)
+ − 2279 {
+ − 2280 debug_print (debug_print_obj);
+ − 2281 }
+ − 2282
1346
+ − 2283 /* Alternate debug printer: Return a char * pointer to the output */
+ − 2284 char *dpa (Lisp_Object debug_print_obj);
+ − 2285 char *
+ − 2286 dpa (Lisp_Object debug_print_obj)
+ − 2287 {
+ − 2288 external_debug_print (debug_print_obj, EXT_PRINT_ALTERNATE);
+ − 2289
+ − 2290 return alternate_do_string;
+ − 2291 }
+ − 2292
428
+ − 2293 /* Debugging kludge -- unbuffered */
+ − 2294 /* This function provided for the benefit of the debugger. */
+ − 2295 void
+ − 2296 debug_backtrace (void)
+ − 2297 {
+ − 2298 /* This function can GC */
853
+ − 2299
+ − 2300 /* by doing this, we trick various things that are non-essential
+ − 2301 but might cause crashes into not getting executed. */
+ − 2302 int specdepth =
2367
+ − 2303 internal_bind_int (&inhibit_non_essential_conversion_operations, 1);
853
+ − 2304
+ − 2305 internal_bind_int (&print_depth, 0);
802
+ − 2306 internal_bind_int (&print_readably, 0);
+ − 2307 internal_bind_int (&print_unbuffered, print_unbuffered + 1);
428
+ − 2308 if (debug_print_length > 0)
802
+ − 2309 internal_bind_lisp_object (&Vprint_length, make_int (debug_print_length));
428
+ − 2310 if (debug_print_level > 0)
802
+ − 2311 internal_bind_lisp_object (&Vprint_level, make_int (debug_print_level));
+ − 2312 /* #### Do we need this? It was in the old code. */
+ − 2313 internal_bind_lisp_object (&Vinhibit_quit, Vinhibit_quit);
428
+ − 2314
+ − 2315 Fbacktrace (Qexternal_debugging_output, Qt);
+ − 2316 stderr_out ("\n");
+ − 2317
802
+ − 2318 unbind_to (specdepth);
428
+ − 2319 }
+ − 2320
1204
+ − 2321 /* Getting tired of typing debug_backtrace() ... */
+ − 2322 void db (void);
+ − 2323 void
+ − 2324 db (void)
+ − 2325 {
+ − 2326 debug_backtrace ();
+ − 2327 }
+ − 2328
428
+ − 2329 void
+ − 2330 debug_short_backtrace (int length)
+ − 2331 {
+ − 2332 int first = 1;
+ − 2333 struct backtrace *bt = backtrace_list;
771
+ − 2334 debug_out (" [");
428
+ − 2335 while (length > 0 && bt)
+ − 2336 {
+ − 2337 if (!first)
+ − 2338 {
771
+ − 2339 debug_out (", ");
428
+ − 2340 }
+ − 2341 if (COMPILED_FUNCTIONP (*bt->function))
+ − 2342 {
1346
+ − 2343 #if defined (COMPILED_FUNCTION_ANNOTATION_HACK)
428
+ − 2344 Lisp_Object ann =
+ − 2345 compiled_function_annotation (XCOMPILED_FUNCTION (*bt->function));
+ − 2346 #else
+ − 2347 Lisp_Object ann = Qnil;
+ − 2348 #endif
+ − 2349 if (!NILP (ann))
+ − 2350 {
771
+ − 2351 debug_out ("<compiled-function from ");
1346
+ − 2352 debug_prin1 (ann, EXT_PRINT_ALL);
771
+ − 2353 debug_out (">");
428
+ − 2354 }
+ − 2355 else
+ − 2356 {
771
+ − 2357 debug_out ("<compiled-function of unknown origin>");
428
+ − 2358 }
+ − 2359 }
+ − 2360 else
1346
+ − 2361 debug_prin1 (*bt->function, EXT_PRINT_ALL);
428
+ − 2362 first = 0;
+ − 2363 length--;
+ − 2364 bt = bt->next;
+ − 2365 }
771
+ − 2366 debug_out ("]\n");
428
+ − 2367 }
+ − 2368
+ − 2369
+ − 2370 void
+ − 2371 syms_of_print (void)
+ − 2372 {
563
+ − 2373 DEFSYMBOL (Qstandard_output);
428
+ − 2374
563
+ − 2375 DEFSYMBOL (Qprint_length);
428
+ − 2376
563
+ − 2377 DEFSYMBOL (Qprint_string_length);
428
+ − 2378
563
+ − 2379 DEFSYMBOL (Qdisplay_error);
+ − 2380 DEFSYMBOL (Qprint_message_label);
428
+ − 2381
+ − 2382 DEFSUBR (Fprin1);
+ − 2383 DEFSUBR (Fprin1_to_string);
+ − 2384 DEFSUBR (Fprinc);
+ − 2385 DEFSUBR (Fprint);
+ − 2386 DEFSUBR (Ferror_message_string);
+ − 2387 DEFSUBR (Fdisplay_error);
+ − 2388 DEFSUBR (Fterpri);
+ − 2389 DEFSUBR (Fwrite_char);
+ − 2390 DEFSUBR (Falternate_debugging_output);
1346
+ − 2391 DEFSUBR (Fset_device_clear_left_side);
+ − 2392 DEFSUBR (Fdevice_left_side_clear_p);
428
+ − 2393 DEFSUBR (Fexternal_debugging_output);
+ − 2394 DEFSUBR (Fopen_termscript);
563
+ − 2395 DEFSYMBOL (Qexternal_debugging_output);
+ − 2396 DEFSYMBOL (Qalternate_debugging_output);
442
+ − 2397 #ifdef HAVE_MS_WINDOWS
563
+ − 2398 DEFSYMBOL (Qmswindows_debugging_output);
442
+ − 2399 #endif
428
+ − 2400 DEFSUBR (Fwith_output_to_temp_buffer);
+ − 2401 }
+ − 2402
+ − 2403 void
+ − 2404 reinit_vars_of_print (void)
+ − 2405 {
+ − 2406 alternate_do_pointer = 0;
+ − 2407 }
+ − 2408
+ − 2409 void
+ − 2410 vars_of_print (void)
+ − 2411 {
+ − 2412 DEFVAR_LISP ("standard-output", &Vstandard_output /*
+ − 2413 Output stream `print' uses by default for outputting a character.
+ − 2414 This may be any function of one argument.
+ − 2415 It may also be a buffer (output is inserted before point)
+ − 2416 or a marker (output is inserted and the marker is advanced)
+ − 2417 or the symbol t (output appears in the minibuffer line).
+ − 2418 */ );
+ − 2419 Vstandard_output = Qt;
+ − 2420
+ − 2421 DEFVAR_LISP ("float-output-format", &Vfloat_output_format /*
+ − 2422 The format descriptor string that lisp uses to print floats.
+ − 2423 This is a %-spec like those accepted by `printf' in C,
+ − 2424 but with some restrictions. It must start with the two characters `%.'.
+ − 2425 After that comes an integer precision specification,
+ − 2426 and then a letter which controls the format.
+ − 2427 The letters allowed are `e', `f' and `g'.
+ − 2428 Use `e' for exponential notation "DIG.DIGITSeEXPT"
+ − 2429 Use `f' for decimal point notation "DIGITS.DIGITS".
+ − 2430 Use `g' to choose the shorter of those two formats for the number at hand.
+ − 2431 The precision in any of these cases is the number of digits following
+ − 2432 the decimal point. With `f', a precision of 0 means to omit the
+ − 2433 decimal point. 0 is not allowed with `f' or `g'.
+ − 2434
+ − 2435 A value of nil means to use `%.16g'.
+ − 2436
+ − 2437 Regardless of the value of `float-output-format', a floating point number
+ − 2438 will never be printed in such a way that it is ambiguous with an integer;
+ − 2439 that is, a floating-point number will always be printed with a decimal
+ − 2440 point and/or an exponent, even if the digits following the decimal point
+ − 2441 are all zero. This is to preserve read-equivalence.
+ − 2442 */ );
+ − 2443 Vfloat_output_format = Qnil;
+ − 2444
+ − 2445 DEFVAR_LISP ("print-length", &Vprint_length /*
+ − 2446 Maximum length of list or vector to print before abbreviating.
+ − 2447 A value of nil means no limit.
+ − 2448 */ );
+ − 2449 Vprint_length = Qnil;
+ − 2450
+ − 2451 DEFVAR_LISP ("print-string-length", &Vprint_string_length /*
+ − 2452 Maximum length of string to print before abbreviating.
+ − 2453 A value of nil means no limit.
+ − 2454 */ );
+ − 2455 Vprint_string_length = Qnil;
+ − 2456
+ − 2457 DEFVAR_LISP ("print-level", &Vprint_level /*
+ − 2458 Maximum depth of list nesting to print before abbreviating.
+ − 2459 A value of nil means no limit.
+ − 2460 */ );
+ − 2461 Vprint_level = Qnil;
+ − 2462
+ − 2463 DEFVAR_BOOL ("print-escape-newlines", &print_escape_newlines /*
+ − 2464 Non-nil means print newlines in strings as backslash-n.
+ − 2465 */ );
+ − 2466 print_escape_newlines = 0;
+ − 2467
+ − 2468 DEFVAR_BOOL ("print-readably", &print_readably /*
+ − 2469 If non-nil, then all objects will be printed in a readable form.
+ − 2470 If an object has no readable representation, then an error is signalled.
+ − 2471 When print-readably is true, compiled-function objects will be written in
+ − 2472 #[...] form instead of in #<compiled-function [...]> form, and two-element
+ − 2473 lists of the form (quote object) will be written as the equivalent 'object.
+ − 2474 Do not SET this variable; bind it instead.
+ − 2475 */ );
+ − 2476 print_readably = 0;
+ − 2477
+ − 2478 /* #### I think this should default to t. But we'd better wait
+ − 2479 until we see that it works out. */
+ − 2480 DEFVAR_LISP ("print-gensym", &Vprint_gensym /*
+ − 2481 If non-nil, then uninterned symbols will be printed specially.
+ − 2482 Uninterned symbols are those which are not present in `obarray', that is,
+ − 2483 those which were made with `make-symbol' or by calling `intern' with a
+ − 2484 second argument.
+ − 2485
+ − 2486 When print-gensym is true, such symbols will be preceded by "#:",
+ − 2487 which causes the reader to create a new symbol instead of interning
+ − 2488 and returning an existing one. Beware: the #: syntax creates a new
+ − 2489 symbol each time it is seen, so if you print an object which contains
+ − 2490 two pointers to the same uninterned symbol, `read' will not duplicate
+ − 2491 that structure.
+ − 2492
+ − 2493 If the value of `print-gensym' is a cons cell, then in addition
+ − 2494 refrain from clearing `print-gensym-alist' on entry to and exit from
+ − 2495 printing functions, so that the use of #...# and #...= can carry over
+ − 2496 for several separately printed objects.
+ − 2497 */ );
+ − 2498 Vprint_gensym = Qnil;
+ − 2499
+ − 2500 DEFVAR_LISP ("print-gensym-alist", &Vprint_gensym_alist /*
+ − 2501 Association list of elements (GENSYM . N) to guide use of #N# and #N=.
+ − 2502 In each element, GENSYM is an uninterned symbol that has been associated
+ − 2503 with #N= for the specified value of N.
+ − 2504 */ );
+ − 2505 Vprint_gensym_alist = Qnil;
+ − 2506
+ − 2507 DEFVAR_LISP ("print-message-label", &Vprint_message_label /*
+ − 2508 Label for minibuffer messages created with `print'. This should
+ − 2509 generally be bound with `let' rather than set. (See `display-message'.)
+ − 2510 */ );
+ − 2511 Vprint_message_label = Qprint;
1957
+ − 2512
+ − 2513 debug_prin1_bindings =
+ − 2514 make_opaque (OPAQUE_UNINIT, sizeof (struct debug_bindings));
+ − 2515 staticpro (&debug_prin1_bindings);
+ − 2516
+ − 2517 alternate_do_size = 5000;
+ − 2518 alternate_do_string = xnew_array(char, 5000);
428
+ − 2519 }