1 /* GLIB - Library of useful routines for C programming 2 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald 3 * 4 * This library is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU Lesser General Public 6 * License as published by the Free Software Foundation; either 7 * version 2 of the License, or (at your option) any later version. 8 * 9 * This library is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 * Lesser General Public License for more details. 13 * 14 * You should have received a copy of the GNU Lesser General Public 15 * License along with this library; if not, write to the 16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330, 17 * Boston, MA 02111-1307, USA. 18 */ 19 20 /* 21 * Modified by the GLib Team and others 1997-2000. See the AUTHORS 22 * file for a list of people on the GLib Team. See the ChangeLog 23 * files for a list of changes. These files are distributed with 24 * GLib at ftp://ftp.gtk.org/pub/gtk/. 25 */ 26 27 /* 28 * MT safe 29 */ 30 31 #include "config.h" 32 33 #include <stdlib.h> 34 #include <stdarg.h> 35 #include <stdio.h> 36 #include <string.h> 37 #ifdef HAVE_UNISTD_H 38 #include <unistd.h> 39 #endif 40 #include <signal.h> 41 #include <locale.h> 42 #include <errno.h> 43 44 #include "glib.h" 45 #include "gdebug.h" 46 #include "gprintfint.h" 47 #include "gthreadprivate.h" 48 #include "galias.h" 49 50 #ifdef G_OS_WIN32 51 #include <process.h> /* For getpid() */ 52 #include <io.h> 53 # define STRICT /* Strict typing, please */ 54 # define _WIN32_WINDOWS 0x0401 /* to get IsDebuggerPresent */ 55 # include <windows.h> 56 # undef STRICT 57 #endif 58 59 /* --- structures --- */ 60 typedef struct _GLogDomain GLogDomain; 61 typedef struct _GLogHandler GLogHandler; 62 struct _GLogDomain 63 { 64 gchar *log_domain; 65 GLogLevelFlags fatal_mask; 66 GLogHandler *handlers; 67 GLogDomain *next; 68 }; 69 struct _GLogHandler 70 { 71 guint id; 72 GLogLevelFlags log_level; 73 GLogFunc log_func; 74 gpointer data; 75 GLogHandler *next; 76 }; 77 78 79 /* --- variables --- */ 80 static GMutex *g_messages_lock = NULL; 81 static GLogDomain *g_log_domains = NULL; 82 static GLogLevelFlags g_log_always_fatal = G_LOG_FATAL_MASK; 83 static GPrintFunc glib_print_func = NULL; 84 static GPrintFunc glib_printerr_func = NULL; 85 static GPrivate *g_log_depth = NULL; 86 static GLogLevelFlags g_log_msg_prefix = G_LOG_LEVEL_ERROR | G_LOG_LEVEL_WARNING | G_LOG_LEVEL_CRITICAL | G_LOG_LEVEL_DEBUG; 87 static GLogFunc default_log_func = g_log_default_handler; 88 static gpointer default_log_data = NULL; 89 90 /* --- functions --- */ 91 #ifdef G_OS_WIN32 92 # define STRICT 93 # include <windows.h> 94 # undef STRICT 95 static gboolean win32_keep_fatal_message = FALSE; 96 97 /* This default message will usually be overwritten. */ 98 /* Yes, a fixed size buffer is bad. So sue me. But g_error() is never 99 * called with huge strings, is it? 100 */ 101 static gchar fatal_msg_buf[1000] = "Unspecified fatal error encountered, aborting."; 102 static gchar *fatal_msg_ptr = fatal_msg_buf; 103 104 #undef write 105 static inline int 106 dowrite (int fd, 107 const void *buf, 108 unsigned int len) 109 { 110 if (win32_keep_fatal_message) 111 { 112 memcpy (fatal_msg_ptr, buf, len); 113 fatal_msg_ptr += len; 114 *fatal_msg_ptr = 0; 115 return len; 116 } 117 118 write (fd, buf, len); 119 120 return len; 121 } 122 #define write(fd, buf, len) dowrite(fd, buf, len) 123 124 #endif 125 126 static void 127 write_string (int fd, 128 const gchar *string) 129 { 130 write (fd, string, strlen (string)); 131 } 132 133 static void 134 g_messages_prefixed_init (void) 135 { 136 static gboolean initialized = FALSE; 137 138 if (!initialized) 139 { 140 const gchar *val; 141 142 initialized = TRUE; 143 val = g_getenv ("G_MESSAGES_PREFIXED"); 144 145 if (val) 146 { 147 const GDebugKey keys[] = { 148 { "error", G_LOG_LEVEL_ERROR }, 149 { "critical", G_LOG_LEVEL_CRITICAL }, 150 { "warning", G_LOG_LEVEL_WARNING }, 151 { "message", G_LOG_LEVEL_MESSAGE }, 152 { "info", G_LOG_LEVEL_INFO }, 153 { "debug", G_LOG_LEVEL_DEBUG } 154 }; 155 156 g_log_msg_prefix = g_parse_debug_string (val, keys, G_N_ELEMENTS (keys)); 157 } 158 } 159 } 160 161 static GLogDomain* 162 g_log_find_domain_L (const gchar *log_domain) 163 { 164 register GLogDomain *domain; 165 166 domain = g_log_domains; 167 while (domain) 168 { 169 if (strcmp (domain->log_domain, log_domain) == 0) 170 return domain; 171 domain = domain->next; 172 } 173 return NULL; 174 } 175 176 static GLogDomain* 177 g_log_domain_new_L (const gchar *log_domain) 178 { 179 register GLogDomain *domain; 180 181 domain = g_new (GLogDomain, 1); 182 domain->log_domain = g_strdup (log_domain); 183 domain->fatal_mask = G_LOG_FATAL_MASK; 184 domain->handlers = NULL; 185 186 domain->next = g_log_domains; 187 g_log_domains = domain; 188 189 return domain; 190 } 191 192 static void 193 g_log_domain_check_free_L (GLogDomain *domain) 194 { 195 if (domain->fatal_mask == G_LOG_FATAL_MASK && 196 domain->handlers == NULL) 197 { 198 register GLogDomain *last, *work; 199 200 last = NULL; 201 202 work = g_log_domains; 203 while (work) 204 { 205 if (work == domain) 206 { 207 if (last) 208 last->next = domain->next; 209 else 210 g_log_domains = domain->next; 211 g_free (domain->log_domain); 212 g_free (domain); 213 break; 214 } 215 last = work; 216 work = last->next; 217 } 218 } 219 } 220 221 static GLogFunc 222 g_log_domain_get_handler_L (GLogDomain *domain, 223 GLogLevelFlags log_level, 224 gpointer *data) 225 { 226 if (domain && log_level) 227 { 228 register GLogHandler *handler; 229 230 handler = domain->handlers; 231 while (handler) 232 { 233 if ((handler->log_level & log_level) == log_level) 234 { 235 *data = handler->data; 236 return handler->log_func; 237 } 238 handler = handler->next; 239 } 240 } 241 242 *data = default_log_data; 243 return default_log_func; 244 } 245 246 GLogLevelFlags 247 g_log_set_always_fatal (GLogLevelFlags fatal_mask) 248 { 249 GLogLevelFlags old_mask; 250 251 /* restrict the global mask to levels that are known to glib 252 * since this setting applies to all domains 253 */ 254 fatal_mask &= (1 << G_LOG_LEVEL_USER_SHIFT) - 1; 255 /* force errors to be fatal */ 256 fatal_mask |= G_LOG_LEVEL_ERROR; 257 /* remove bogus flag */ 258 fatal_mask &= ~G_LOG_FLAG_FATAL; 259 260 g_mutex_lock (g_messages_lock); 261 old_mask = g_log_always_fatal; 262 g_log_always_fatal = fatal_mask; 263 g_mutex_unlock (g_messages_lock); 264 265 return old_mask; 266 } 267 268 GLogLevelFlags 269 g_log_set_fatal_mask (const gchar *log_domain, 270 GLogLevelFlags fatal_mask) 271 { 272 GLogLevelFlags old_flags; 273 register GLogDomain *domain; 274 275 if (!log_domain) 276 log_domain = ""; 277 278 /* force errors to be fatal */ 279 fatal_mask |= G_LOG_LEVEL_ERROR; 280 /* remove bogus flag */ 281 fatal_mask &= ~G_LOG_FLAG_FATAL; 282 283 g_mutex_lock (g_messages_lock); 284 285 domain = g_log_find_domain_L (log_domain); 286 if (!domain) 287 domain = g_log_domain_new_L (log_domain); 288 old_flags = domain->fatal_mask; 289 290 domain->fatal_mask = fatal_mask; 291 g_log_domain_check_free_L (domain); 292 293 g_mutex_unlock (g_messages_lock); 294 295 return old_flags; 296 } 297 298 guint 299 g_log_set_handler (const gchar *log_domain, 300 GLogLevelFlags log_levels, 301 GLogFunc log_func, 302 gpointer user_data) 303 { 304 static guint handler_id = 0; 305 GLogDomain *domain; 306 GLogHandler *handler; 307 308 g_return_val_if_fail ((log_levels & G_LOG_LEVEL_MASK) != 0, 0); 309 g_return_val_if_fail (log_func != NULL, 0); 310 311 if (!log_domain) 312 log_domain = ""; 313 314 handler = g_new (GLogHandler, 1); 315 316 g_mutex_lock (g_messages_lock); 317 318 domain = g_log_find_domain_L (log_domain); 319 if (!domain) 320 domain = g_log_domain_new_L (log_domain); 321 322 handler->id = ++handler_id; 323 handler->log_level = log_levels; 324 handler->log_func = log_func; 325 handler->data = user_data; 326 handler->next = domain->handlers; 327 domain->handlers = handler; 328 329 g_mutex_unlock (g_messages_lock); 330 331 return handler_id; 332 } 333 334 GLogFunc 335 g_log_set_default_handler (GLogFunc log_func, 336 gpointer user_data) 337 { 338 GLogFunc old_log_func; 339 340 g_mutex_lock (g_messages_lock); 341 old_log_func = default_log_func; 342 default_log_func = log_func; 343 default_log_data = user_data; 344 g_mutex_unlock (g_messages_lock); 345 346 return old_log_func; 347 } 348 349 void 350 g_log_remove_handler (const gchar *log_domain, 351 guint handler_id) 352 { 353 register GLogDomain *domain; 354 355 g_return_if_fail (handler_id > 0); 356 357 if (!log_domain) 358 log_domain = ""; 359 360 g_mutex_lock (g_messages_lock); 361 domain = g_log_find_domain_L (log_domain); 362 if (domain) 363 { 364 GLogHandler *work, *last; 365 366 last = NULL; 367 work = domain->handlers; 368 while (work) 369 { 370 if (work->id == handler_id) 371 { 372 if (last) 373 last->next = work->next; 374 else 375 domain->handlers = work->next; 376 g_log_domain_check_free_L (domain); 377 g_mutex_unlock (g_messages_lock); 378 g_free (work); 379 return; 380 } 381 last = work; 382 work = last->next; 383 } 384 } 385 g_mutex_unlock (g_messages_lock); 386 g_warning ("%s: could not find handler with id `%d' for domain \"%s\"", 387 G_STRLOC, handler_id, log_domain); 388 } 389 390 void 391 g_logv (const gchar *log_domain, 392 GLogLevelFlags log_level, 393 const gchar *format, 394 va_list args1) 395 { 396 gboolean was_fatal = (log_level & G_LOG_FLAG_FATAL) != 0; 397 gboolean was_recursion = (log_level & G_LOG_FLAG_RECURSION) != 0; 398 gint i; 399 400 log_level &= G_LOG_LEVEL_MASK; 401 if (!log_level) 402 return; 403 404 for (i = g_bit_nth_msf (log_level, -1); i >= 0; i = g_bit_nth_msf (log_level, i)) 405 { 406 register GLogLevelFlags test_level; 407 408 test_level = 1 << i; 409 if (log_level & test_level) 410 { 411 guint depth = GPOINTER_TO_UINT (g_private_get (g_log_depth)); 412 GLogDomain *domain; 413 GLogFunc log_func; 414 GLogLevelFlags domain_fatal_mask; 415 gpointer data = NULL; 416 417 if (was_fatal) 418 test_level |= G_LOG_FLAG_FATAL; 419 if (was_recursion) 420 test_level |= G_LOG_FLAG_RECURSION; 421 422 /* check recursion and lookup handler */ 423 g_mutex_lock (g_messages_lock); 424 domain = g_log_find_domain_L (log_domain ? log_domain : ""); 425 if (depth) 426 test_level |= G_LOG_FLAG_RECURSION; 427 depth++; 428 domain_fatal_mask = domain ? domain->fatal_mask : G_LOG_FATAL_MASK; 429 if ((domain_fatal_mask | g_log_always_fatal) & test_level) 430 test_level |= G_LOG_FLAG_FATAL; 431 if (test_level & G_LOG_FLAG_RECURSION) 432 log_func = _g_log_fallback_handler; 433 else 434 log_func = g_log_domain_get_handler_L (domain, test_level, &data); 435 domain = NULL; 436 g_mutex_unlock (g_messages_lock); 437 438 g_private_set (g_log_depth, GUINT_TO_POINTER (depth)); 439 440 /* had to defer debug initialization until we can keep track of recursion */ 441 if (!(test_level & G_LOG_FLAG_RECURSION) && !_g_debug_initialized) 442 { 443 GLogLevelFlags orig_test_level = test_level; 444 445 _g_debug_init (); 446 if ((domain_fatal_mask | g_log_always_fatal) & test_level) 447 test_level |= G_LOG_FLAG_FATAL; 448 if (test_level != orig_test_level) 449 { 450 /* need a relookup, not nice, but not too bad either */ 451 g_mutex_lock (g_messages_lock); 452 domain = g_log_find_domain_L (log_domain ? log_domain : ""); 453 log_func = g_log_domain_get_handler_L (domain, test_level, &data); 454 domain = NULL; 455 g_mutex_unlock (g_messages_lock); 456 } 457 } 458 459 if (test_level & G_LOG_FLAG_RECURSION) 460 { 461 /* we use a stack buffer of fixed size, since we're likely 462 * in an out-of-memory situation 463 */ 464 gchar buffer[1025]; 465 gsize size; 466 va_list args2; 467 468 G_VA_COPY (args2, args1); 469 size = _g_vsnprintf (buffer, 1024, format, args2); 470 va_end (args2); 471 472 log_func (log_domain, test_level, buffer, data); 473 } 474 else 475 { 476 gchar *msg; 477 va_list args2; 478 479 G_VA_COPY (args2, args1); 480 msg = g_strdup_vprintf (format, args2); 481 va_end (args2); 482 483 log_func (log_domain, test_level, msg, data); 484 485 g_free (msg); 486 } 487 488 if (test_level & G_LOG_FLAG_FATAL) 489 { 490 #ifdef G_OS_WIN32 491 gchar *locale_msg = g_locale_from_utf8 (fatal_msg_buf, -1, NULL, NULL, NULL); 492 493 MessageBox (NULL, locale_msg, NULL, 494 MB_ICONERROR|MB_SETFOREGROUND); 495 if (IsDebuggerPresent () && !(test_level & G_LOG_FLAG_RECURSION)) 496 G_BREAKPOINT (); 497 else 498 abort (); 499 #else 500 #if defined (G_ENABLE_DEBUG) && defined (SIGTRAP) 501 if (!(test_level & G_LOG_FLAG_RECURSION)) 502 G_BREAKPOINT (); 503 else 504 abort (); 505 #else /* !G_ENABLE_DEBUG || !SIGTRAP */ 506 abort (); 507 #endif /* !G_ENABLE_DEBUG || !SIGTRAP */ 508 #endif /* !G_OS_WIN32 */ 509 } 510 511 depth--; 512 g_private_set (g_log_depth, GUINT_TO_POINTER (depth)); 513 } 514 } 515 } 516 517 void 518 g_log (const gchar *log_domain, 519 GLogLevelFlags log_level, 520 const gchar *format, 521 ...) 522 { 523 va_list args; 524 525 va_start (args, format); 526 g_logv (log_domain, log_level, format, args); 527 va_end (args); 528 } 529 530 void 531 g_return_if_fail_warning (const char *log_domain, 532 const char *pretty_function, 533 const char *expression) 534 { 535 /* 536 * Omit the prefix used by the PLT-reduction 537 * technique used in GTK+. 538 */ 539 if (g_str_has_prefix (pretty_function, "IA__")) 540 pretty_function += 4; 541 g_log (log_domain, 542 G_LOG_LEVEL_CRITICAL, 543 "%s: assertion `%s' failed", 544 pretty_function, 545 expression); 546 } 547 548 void 549 g_warn_message (const char *domain, 550 const char *file, 551 int line, 552 const char *func, 553 const char *warnexpr) 554 { 555 char *s, lstr[32]; 556 g_snprintf (lstr, 32, "%d", line); 557 if (warnexpr) 558 s = g_strconcat ("(", file, ":", lstr, "):", 559 func, func[0] ? ":" : "", 560 " runtime check failed: (", warnexpr, ")", NULL); 561 else 562 s = g_strconcat ("(", file, ":", lstr, "):", 563 func, func[0] ? ":" : "", 564 " ", "code should not be reached", NULL); 565 g_log (domain, G_LOG_LEVEL_WARNING, "%s", s); 566 g_free (s); 567 } 568 569 void 570 g_assert_warning (const char *log_domain, 571 const char *file, 572 const int line, 573 const char *pretty_function, 574 const char *expression) 575 { 576 /* 577 * Omit the prefix used by the PLT-reduction 578 * technique used in GTK+. 579 */ 580 if (g_str_has_prefix (pretty_function, "IA__")) 581 pretty_function += 4; 582 g_log (log_domain, 583 G_LOG_LEVEL_ERROR, 584 expression 585 ? "file %s: line %d (%s): assertion failed: (%s)" 586 : "file %s: line %d (%s): should not be reached", 587 file, 588 line, 589 pretty_function, 590 expression); 591 abort (); 592 } 593 594 #define CHAR_IS_SAFE(wc) (!((wc < 0x20 && wc != '\t' && wc != '\n' && wc != '\r') || \ 595 (wc == 0x7f) || \ 596 (wc >= 0x80 && wc < 0xa0))) 597 598 static gchar* 599 strdup_convert (const gchar *string, 600 const gchar *charset) 601 { 602 if (!g_utf8_validate (string, -1, NULL)) 603 { 604 GString *gstring = g_string_new ("[Invalid UTF-8] "); 605 guchar *p; 606 607 for (p = (guchar *)string; *p; p++) 608 { 609 if (CHAR_IS_SAFE(*p) && 610 !(*p == '\r' && *(p + 1) != '\n') && 611 *p < 0x80) 612 g_string_append_c (gstring, *p); 613 else 614 g_string_append_printf (gstring, "\\x%02x", (guint)(guchar)*p); 615 } 616 617 return g_string_free (gstring, FALSE); 618 } 619 else 620 { 621 GError *err = NULL; 622 623 gchar *result = g_convert_with_fallback (string, -1, charset, "UTF-8", "?", NULL, NULL, &err); 624 if (result) 625 return result; 626 else 627 { 628 /* Not thread-safe, but doesn't matter if we print the warning twice 629 */ 630 static gboolean warned = FALSE; 631 if (!warned) 632 { 633 warned = TRUE; 634 _g_fprintf (stderr, "GLib: Cannot convert message: %s\n", err->message); 635 } 636 g_error_free (err); 637 638 return g_strdup (string); 639 } 640 } 641 } 642 643 /* For a radix of 8 we need at most 3 output bytes for 1 input 644 * byte. Additionally we might need up to 2 output bytes for the 645 * readix prefix and 1 byte for the trailing NULL. 646 */ 647 #define FORMAT_UNSIGNED_BUFSIZE ((GLIB_SIZEOF_LONG * 3) + 3) 648 649 static void 650 format_unsigned (gchar *buf, 651 gulong num, 652 guint radix) 653 { 654 gulong tmp; 655 gchar c; 656 gint i, n; 657 658 /* we may not call _any_ GLib functions here (or macros like g_return_if_fail()) */ 659 660 if (radix != 8 && radix != 10 && radix != 16) 661 { 662 *buf = '\000'; 663 return; 664 } 665 666 if (!num) 667 { 668 *buf++ = '0'; 669 *buf = '\000'; 670 return; 671 } 672 673 if (radix == 16) 674 { 675 *buf++ = '0'; 676 *buf++ = 'x'; 677 } 678 else if (radix == 8) 679 { 680 *buf++ = '0'; 681 } 682 683 n = 0; 684 tmp = num; 685 while (tmp) 686 { 687 tmp /= radix; 688 n++; 689 } 690 691 i = n; 692 693 /* Again we can't use g_assert; actually this check should _never_ fail. */ 694 if (n > FORMAT_UNSIGNED_BUFSIZE - 3) 695 { 696 *buf = '\000'; 697 return; 698 } 699 700 while (num) 701 { 702 i--; 703 c = (num % radix); 704 if (c < 10) 705 buf[i] = c + '0'; 706 else 707 buf[i] = c + 'a' - 10; 708 num /= radix; 709 } 710 711 buf[n] = '\000'; 712 } 713 714 /* string size big enough to hold level prefix */ 715 #define STRING_BUFFER_SIZE (FORMAT_UNSIGNED_BUFSIZE + 32) 716 717 #define ALERT_LEVELS (G_LOG_LEVEL_ERROR | G_LOG_LEVEL_CRITICAL | G_LOG_LEVEL_WARNING) 718 719 static int 720 mklevel_prefix (gchar level_prefix[STRING_BUFFER_SIZE], 721 GLogLevelFlags log_level) 722 { 723 gboolean to_stdout = TRUE; 724 725 /* we may not call _any_ GLib functions here */ 726 727 switch (log_level & G_LOG_LEVEL_MASK) 728 { 729 case G_LOG_LEVEL_ERROR: 730 strcpy (level_prefix, "ERROR"); 731 to_stdout = FALSE; 732 break; 733 case G_LOG_LEVEL_CRITICAL: 734 strcpy (level_prefix, "CRITICAL"); 735 to_stdout = FALSE; 736 break; 737 case G_LOG_LEVEL_WARNING: 738 strcpy (level_prefix, "WARNING"); 739 to_stdout = FALSE; 740 break; 741 case G_LOG_LEVEL_MESSAGE: 742 strcpy (level_prefix, "Message"); 743 to_stdout = FALSE; 744 break; 745 case G_LOG_LEVEL_INFO: 746 strcpy (level_prefix, "INFO"); 747 break; 748 case G_LOG_LEVEL_DEBUG: 749 strcpy (level_prefix, "DEBUG"); 750 break; 751 default: 752 if (log_level) 753 { 754 strcpy (level_prefix, "LOG-"); 755 format_unsigned (level_prefix + 4, log_level & G_LOG_LEVEL_MASK, 16); 756 } 757 else 758 strcpy (level_prefix, "LOG"); 759 break; 760 } 761 if (log_level & G_LOG_FLAG_RECURSION) 762 strcat (level_prefix, " (recursed)"); 763 if (log_level & ALERT_LEVELS) 764 strcat (level_prefix, " **"); 765 766 #ifdef G_OS_WIN32 767 win32_keep_fatal_message = (log_level & G_LOG_FLAG_FATAL) != 0; 768 #endif 769 return to_stdout ? 1 : 2; 770 } 771 772 void 773 _g_log_fallback_handler (const gchar *log_domain, 774 GLogLevelFlags log_level, 775 const gchar *message, 776 gpointer unused_data) 777 { 778 gchar level_prefix[STRING_BUFFER_SIZE]; 779 #ifndef G_OS_WIN32 780 gchar pid_string[FORMAT_UNSIGNED_BUFSIZE]; 781 #endif 782 gboolean is_fatal = (log_level & G_LOG_FLAG_FATAL) != 0; 783 int fd; 784 785 /* we can not call _any_ GLib functions in this fallback handler, 786 * which is why we skip UTF-8 conversion, etc. 787 * since we either recursed or ran out of memory, we're in a pretty 788 * pathologic situation anyways, what we can do is giving the 789 * the process ID unconditionally however. 790 */ 791 792 fd = mklevel_prefix (level_prefix, log_level); 793 if (!message) 794 message = "(NULL) message"; 795 796 #ifndef G_OS_WIN32 797 format_unsigned (pid_string, getpid (), 10); 798 #endif 799 800 if (log_domain) 801 write_string (fd, "\n"); 802 else 803 write_string (fd, "\n** "); 804 805 #ifndef G_OS_WIN32 806 write_string (fd, "(process:"); 807 write_string (fd, pid_string); 808 write_string (fd, "): "); 809 #endif 810 811 if (log_domain) 812 { 813 write_string (fd, log_domain); 814 write_string (fd, "-"); 815 } 816 write_string (fd, level_prefix); 817 write_string (fd, ": "); 818 write_string (fd, message); 819 if (is_fatal) 820 write_string (fd, "\naborting...\n"); 821 else 822 write_string (fd, "\n"); 823 } 824 825 static void 826 escape_string (GString *string) 827 { 828 const char *p = string->str; 829 gunichar wc; 830 831 while (p < string->str + string->len) 832 { 833 gboolean safe; 834 835 wc = g_utf8_get_char_validated (p, -1); 836 if (wc == (gunichar)-1 || wc == (gunichar)-2) 837 { 838 gchar *tmp; 839 guint pos; 840 841 pos = p - string->str; 842 843 /* Emit invalid UTF-8 as hex escapes 844 */ 845 tmp = g_strdup_printf ("\\x%02x", (guint)(guchar)*p); 846 g_string_erase (string, pos, 1); 847 g_string_insert (string, pos, tmp); 848 849 p = string->str + (pos + 4); /* Skip over escape sequence */ 850 851 g_free (tmp); 852 continue; 853 } 854 if (wc == '\r') 855 { 856 safe = *(p + 1) == '\n'; 857 } 858 else 859 { 860 safe = CHAR_IS_SAFE (wc); 861 } 862 863 if (!safe) 864 { 865 gchar *tmp; 866 guint pos; 867 868 pos = p - string->str; 869 870 /* Largest char we escape is 0x0a, so we don't have to worry 871 * about 8-digit \Uxxxxyyyy 872 */ 873 tmp = g_strdup_printf ("\\u%04x", wc); 874 g_string_erase (string, pos, g_utf8_next_char (p) - p); 875 g_string_insert (string, pos, tmp); 876 g_free (tmp); 877 878 p = string->str + (pos + 6); /* Skip over escape sequence */ 879 } 880 else 881 p = g_utf8_next_char (p); 882 } 883 } 884 885 void 886 g_log_default_handler (const gchar *log_domain, 887 GLogLevelFlags log_level, 888 const gchar *message, 889 gpointer unused_data) 890 { 891 gboolean is_fatal = (log_level & G_LOG_FLAG_FATAL) != 0; 892 gchar level_prefix[STRING_BUFFER_SIZE], *string; 893 GString *gstring; 894 int fd; 895 896 /* we can be called externally with recursion for whatever reason */ 897 if (log_level & G_LOG_FLAG_RECURSION) 898 { 899 _g_log_fallback_handler (log_domain, log_level, message, unused_data); 900 return; 901 } 902 903 g_messages_prefixed_init (); 904 905 fd = mklevel_prefix (level_prefix, log_level); 906 907 gstring = g_string_new (NULL); 908 if (log_level & ALERT_LEVELS) 909 g_string_append (gstring, "\n"); 910 if (!log_domain) 911 g_string_append (gstring, "** "); 912 913 if ((g_log_msg_prefix & log_level) == log_level) 914 { 915 const gchar *prg_name = g_get_prgname (); 916 917 if (!prg_name) 918 g_string_append_printf (gstring, "(process:%lu): ", (gulong)getpid ()); 919 else 920 g_string_append_printf (gstring, "(%s:%lu): ", prg_name, (gulong)getpid ()); 921 } 922 923 if (log_domain) 924 { 925 g_string_append (gstring, log_domain); 926 g_string_append_c (gstring, '-'); 927 } 928 g_string_append (gstring, level_prefix); 929 930 g_string_append (gstring, ": "); 931 if (!message) 932 g_string_append (gstring, "(NULL) message"); 933 else 934 { 935 GString *msg; 936 const gchar *charset; 937 938 msg = g_string_new (message); 939 escape_string (msg); 940 941 if (g_get_charset (&charset)) 942 g_string_append (gstring, msg->str); /* charset is UTF-8 already */ 943 else 944 { 945 string = strdup_convert (msg->str, charset); 946 g_string_append (gstring, string); 947 g_free (string); 948 } 949 950 g_string_free (msg, TRUE); 951 } 952 if (is_fatal) 953 g_string_append (gstring, "\naborting...\n"); 954 else 955 g_string_append (gstring, "\n"); 956 957 string = g_string_free (gstring, FALSE); 958 959 write_string (fd, string); 960 g_free (string); 961 } 962 963 GPrintFunc 964 g_set_print_handler (GPrintFunc func) 965 { 966 GPrintFunc old_print_func; 967 968 g_mutex_lock (g_messages_lock); 969 old_print_func = glib_print_func; 970 glib_print_func = func; 971 g_mutex_unlock (g_messages_lock); 972 973 return old_print_func; 974 } 975 976 void 977 g_print (const gchar *format, 978 ...) 979 { 980 va_list args; 981 gchar *string; 982 GPrintFunc local_glib_print_func; 983 984 g_return_if_fail (format != NULL); 985 986 va_start (args, format); 987 string = g_strdup_vprintf (format, args); 988 va_end (args); 989 990 g_mutex_lock (g_messages_lock); 991 local_glib_print_func = glib_print_func; 992 g_mutex_unlock (g_messages_lock); 993 994 if (local_glib_print_func) 995 local_glib_print_func (string); 996 else 997 { 998 const gchar *charset; 999 1000 if (g_get_charset (&charset)) 1001 fputs (string, stdout); /* charset is UTF-8 already */ 1002 else 1003 { 1004 gchar *lstring = strdup_convert (string, charset); 1005 1006 fputs (lstring, stdout); 1007 g_free (lstring); 1008 } 1009 fflush (stdout); 1010 } 1011 g_free (string); 1012 } 1013 1014 GPrintFunc 1015 g_set_printerr_handler (GPrintFunc func) 1016 { 1017 GPrintFunc old_printerr_func; 1018 1019 g_mutex_lock (g_messages_lock); 1020 old_printerr_func = glib_printerr_func; 1021 glib_printerr_func = func; 1022 g_mutex_unlock (g_messages_lock); 1023 1024 return old_printerr_func; 1025 } 1026 1027 void 1028 g_printerr (const gchar *format, 1029 ...) 1030 { 1031 va_list args; 1032 gchar *string; 1033 GPrintFunc local_glib_printerr_func; 1034 1035 g_return_if_fail (format != NULL); 1036 1037 va_start (args, format); 1038 string = g_strdup_vprintf (format, args); 1039 va_end (args); 1040 1041 g_mutex_lock (g_messages_lock); 1042 local_glib_printerr_func = glib_printerr_func; 1043 g_mutex_unlock (g_messages_lock); 1044 1045 if (local_glib_printerr_func) 1046 local_glib_printerr_func (string); 1047 else 1048 { 1049 const gchar *charset; 1050 1051 if (g_get_charset (&charset)) 1052 fputs (string, stderr); /* charset is UTF-8 already */ 1053 else 1054 { 1055 gchar *lstring = strdup_convert (string, charset); 1056 1057 fputs (lstring, stderr); 1058 g_free (lstring); 1059 } 1060 fflush (stderr); 1061 } 1062 g_free (string); 1063 } 1064 1065 gsize 1066 g_printf_string_upper_bound (const gchar *format, 1067 va_list args) 1068 { 1069 gchar c; 1070 return _g_vsnprintf (&c, 1, format, args) + 1; 1071 } 1072 1073 void 1074 _g_messages_thread_init_nomessage (void) 1075 { 1076 g_messages_lock = g_mutex_new (); 1077 g_log_depth = g_private_new (NULL); 1078 g_messages_prefixed_init (); 1079 _g_debug_init (); 1080 } 1081 1082 gboolean _g_debug_initialized = FALSE; 1083 guint _g_debug_flags = 0; 1084 1085 void 1086 _g_debug_init (void) 1087 { 1088 const gchar *val; 1089 1090 _g_debug_initialized = TRUE; 1091 1092 val = g_getenv ("G_DEBUG"); 1093 if (val != NULL) 1094 { 1095 const GDebugKey keys[] = { 1096 {"fatal_warnings", G_DEBUG_FATAL_WARNINGS}, 1097 {"fatal_criticals", G_DEBUG_FATAL_CRITICALS} 1098 }; 1099 1100 _g_debug_flags = g_parse_debug_string (val, keys, G_N_ELEMENTS (keys)); 1101 } 1102 1103 if (_g_debug_flags & G_DEBUG_FATAL_WARNINGS) 1104 { 1105 GLogLevelFlags fatal_mask; 1106 1107 fatal_mask = g_log_set_always_fatal (G_LOG_FATAL_MASK); 1108 fatal_mask |= G_LOG_LEVEL_WARNING | G_LOG_LEVEL_CRITICAL; 1109 g_log_set_always_fatal (fatal_mask); 1110 } 1111 1112 if (_g_debug_flags & G_DEBUG_FATAL_CRITICALS) 1113 { 1114 GLogLevelFlags fatal_mask; 1115 1116 fatal_mask = g_log_set_always_fatal (G_LOG_FATAL_MASK); 1117 fatal_mask |= G_LOG_LEVEL_CRITICAL; 1118 g_log_set_always_fatal (fatal_mask); 1119 } 1120 } 1121 1122 #define __G_MESSAGES_C__ 1123 #include "galiasdef.c" 1124
