gstrfuncs.c

   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 #ifdef HAVE_CONFIG_H
  32 #include <config.h>
  33 #endif
  34
  35 #define _GNU_SOURCE             /* For stpcpy */
  36
  37 #include <stdarg.h>
  38 #include <stdio.h>
  39 #include <stdlib.h>
  40 #include <string.h>
  41 #include <locale.h>
  42 #include <ctype.h>              /* For tolower() */
  43 #if !defined (HAVE_STRSIGNAL) || !defined(NO_SYS_SIGLIST_DECL)
  44 #include <signal.h>
  45 #endif
  46 #include "glib.h"
  47
  48 #ifdef G_OS_WIN32
  49 #include <windows.h>
  50 #endif
  51
  52 /* do not include <unistd.h> in this place since it
  53  * inteferes with g_strsignal() on some OSes
  54  */
  55
  56 gchar*
  57 g_strdup (const gchar *str)
  58 {
  59   gchar *new_str;
  60
  61   if (str)
  62     {
  63       new_str = g_new (char, strlen (str) + 1);
  64       strcpy (new_str, str);
  65     }
  66   else
  67     new_str = NULL;
  68
  69   return new_str;
  70 }
  71
  72 gpointer
  73 g_memdup (gconstpointer mem,
  74           guint         byte_size)
  75 {
  76   gpointer new_mem;
  77
  78   if (mem)
  79     {
  80       new_mem = g_malloc (byte_size);
  81       memcpy (new_mem, mem, byte_size);
  82     }
  83   else
  84     new_mem = NULL;
  85
  86   return new_mem;
  87 }
  88
  89 gchar*
  90 g_strndup (const gchar *str,
  91            guint        n)
  92 {
  93   gchar *new_str;
  94
  95   if (str)
  96     {
  97       new_str = g_new (gchar, n + 1);
  98       strncpy (new_str, str, n);
  99       new_str[n] = '\0';
 100     }
 101   else
 102     new_str = NULL;
 103
 104   return new_str;
 105 }
 106
 107 gchar*
 108 g_strnfill (guint length,
 109             gchar fill_char)
 110 {
 111   register gchar *str, *s, *end;
 112
 113   str = g_new (gchar, length + 1);
 114   s = str;
 115   end = str + length;
 116   while (s < end)
 117     *(s++) = fill_char;
 118   *s = 0;
 119
 120   return str;
 121 }
 122
 123 /**
 124  * g_stpcpy:
 125  * @dest: destination buffer
 126  * @src: source string
 127  *
 128  * Copies a nul-terminated string into the dest buffer, include the
 129  * trailing nul, and return a pointer to the trailing nul byte.
 130  * This is useful for concatenating multiple strings together
 131  * without having to repeatedly scan for the end.
 132  *
 133  * Return value: a pointer to trailing nul byte.
 134  **/
 135 gchar *
 136 g_stpcpy (gchar       *dest,
 137           const gchar *src)
 138 {
 139 #ifdef HAVE_STPCPY
 140   g_return_val_if_fail (dest != NULL, NULL);
 141   g_return_val_if_fail (src != NULL, NULL);
 142   return stpcpy (dest, src);
 143 #else
 144   register gchar *d = dest;
 145   register const gchar *s = src;
 146
 147   g_return_val_if_fail (dest != NULL, NULL);
 148   g_return_val_if_fail (src != NULL, NULL);
 149   do
 150     *d++ = *s;
 151   while (*s++ != '\0');
 152
 153   return d - 1;
 154 #endif
 155 }
 156
 157 gchar*
 158 g_strdup_vprintf (const gchar *format,
 159                   va_list      args1)
 160 {
 161   gchar *buffer;
 162   va_list args2;
 163
 164   G_VA_COPY (args2, args1);
 165
 166   buffer = g_new (gchar, g_printf_string_upper_bound (format, args1));
 167
 168   vsprintf (buffer, format, args2);
 169   va_end (args2);
 170
 171   return buffer;
 172 }
 173
 174 gchar*
 175 g_strdup_printf (const gchar *format,
 176                  ...)
 177 {
 178   gchar *buffer;
 179   va_list args;
 180
 181   va_start (args, format);
 182   buffer = g_strdup_vprintf (format, args);
 183   va_end (args);
 184
 185   return buffer;
 186 }
 187
 188 gchar*
 189 g_strconcat (const gchar *string1, ...)
 190 {
 191   guint   l;
 192   va_list args;
 193   gchar   *s;
 194   gchar   *concat;
 195   gchar   *ptr;
 196
 197   g_return_val_if_fail (string1 != NULL, NULL);
 198
 199   l = 1 + strlen (string1);
 200   va_start (args, string1);
 201   s = va_arg (args, gchar*);
 202   while (s)
 203     {
 204       l += strlen (s);
 205       s = va_arg (args, gchar*);
 206     }
 207   va_end (args);
 208
 209   concat = g_new (gchar, l);
 210   ptr = concat;
 211
 212   ptr = g_stpcpy (ptr, string1);
 213   va_start (args, string1);
 214   s = va_arg (args, gchar*);
 215   while (s)
 216     {
 217       strcat (concat, s);
 218       s = va_arg (args, gchar*);
 219     }
 220   va_end (args);
 221
 222   return concat;
 223 }
 224
 225 gdouble
 226 g_strtod (const gchar *nptr,
 227           gchar **endptr)
 228 {
 229   gchar *fail_pos_1;
 230   gchar *fail_pos_2;
 231   gdouble val_1;
 232   gdouble val_2 = 0;
 233
 234   g_return_val_if_fail (nptr != NULL, 0);
 235
 236   fail_pos_1 = NULL;
 237   fail_pos_2 = NULL;
 238
 239   val_1 = strtod (nptr, &fail_pos_1);
 240
 241   if (fail_pos_1 && fail_pos_1[0] != 0)
 242     {
 243       gchar *old_locale;
 244
 245       old_locale = g_strdup (setlocale (LC_NUMERIC, NULL));
 246       setlocale (LC_NUMERIC, "C");
 247       val_2 = strtod (nptr, &fail_pos_2);
 248       setlocale (LC_NUMERIC, old_locale);
 249       g_free (old_locale);
 250     }
 251
 252   if (!fail_pos_1 || fail_pos_1[0] == 0 || fail_pos_1 >= fail_pos_2)
 253     {
 254       if (endptr)
 255         *endptr = fail_pos_1;
 256       return val_1;
 257     }
 258   else
 259     {
 260       if (endptr)
 261         *endptr = fail_pos_2;
 262       return val_2;
 263     }
 264 }
 265
 266 G_CONST_RETURN gchar*
 267 g_strerror (gint errnum)
 268 {
 269   static GStaticPrivate msg_private = G_STATIC_PRIVATE_INIT;
 270   char *msg;
 271
 272 #ifdef HAVE_STRERROR
 273   return strerror (errnum);
 274 #elif NO_SYS_ERRLIST
 275   switch (errnum)
 276     {
 277 #ifdef E2BIG
 278     case E2BIG: return "argument list too long";
 279 #endif
 280 #ifdef EACCES
 281     case EACCES: return "permission denied";
 282 #endif
 283 #ifdef EADDRINUSE
 284     case EADDRINUSE: return "address already in use";
 285 #endif
 286 #ifdef EADDRNOTAVAIL
 287     case EADDRNOTAVAIL: return "can't assign requested address";
 288 #endif
 289 #ifdef EADV
 290     case EADV: return "advertise error";
 291 #endif
 292 #ifdef EAFNOSUPPORT
 293     case EAFNOSUPPORT: return "address family not supported by protocol family";
 294 #endif
 295 #ifdef EAGAIN
 296     case EAGAIN: return "try again";
 297 #endif
 298 #ifdef EALIGN
 299     case EALIGN: return "EALIGN";
 300 #endif
 301 #ifdef EALREADY
 302     case EALREADY: return "operation already in progress";
 303 #endif
 304 #ifdef EBADE
 305     case EBADE: return "bad exchange descriptor";
 306 #endif
 307 #ifdef EBADF
 308     case EBADF: return "bad file number";
 309 #endif
 310 #ifdef EBADFD
 311     case EBADFD: return "file descriptor in bad state";
 312 #endif
 313 #ifdef EBADMSG
 314     case EBADMSG: return "not a data message";
 315 #endif
 316 #ifdef EBADR
 317     case EBADR: return "bad request descriptor";
 318 #endif
 319 #ifdef EBADRPC
 320     case EBADRPC: return "RPC structure is bad";
 321 #endif
 322 #ifdef EBADRQC
 323     case EBADRQC: return "bad request code";
 324 #endif
 325 #ifdef EBADSLT
 326     case EBADSLT: return "invalid slot";
 327 #endif
 328 #ifdef EBFONT
 329     case EBFONT: return "bad font file format";
 330 #endif
 331 #ifdef EBUSY
 332     case EBUSY: return "mount device busy";
 333 #endif
 334 #ifdef ECHILD
 335     case ECHILD: return "no children";
 336 #endif
 337 #ifdef ECHRNG
 338     case ECHRNG: return "channel number out of range";
 339 #endif
 340 #ifdef ECOMM
 341     case ECOMM: return "communication error on send";
 342 #endif
 343 #ifdef ECONNABORTED
 344     case ECONNABORTED: return "software caused connection abort";
 345 #endif
 346 #ifdef ECONNREFUSED
 347     case ECONNREFUSED: return "connection refused";
 348 #endif
 349 #ifdef ECONNRESET
 350     case ECONNRESET: return "connection reset by peer";
 351 #endif
 352 #if defined(EDEADLK) && (!defined(EWOULDBLOCK) || (EDEADLK != EWOULDBLOCK))
 353     case EDEADLK: return "resource deadlock avoided";
 354 #endif
 355 #ifdef EDEADLOCK
 356     case EDEADLOCK: return "resource deadlock avoided";
 357 #endif
 358 #ifdef EDESTADDRREQ
 359     case EDESTADDRREQ: return "destination address required";
 360 #endif
 361 #ifdef EDIRTY
 362     case EDIRTY: return "mounting a dirty fs w/o force";
 363 #endif
 364 #ifdef EDOM
 365     case EDOM: return "math argument out of range";
 366 #endif
 367 #ifdef EDOTDOT
 368     case EDOTDOT: return "cross mount point";
 369 #endif
 370 #ifdef EDQUOT
 371     case EDQUOT: return "disk quota exceeded";
 372 #endif
 373 #ifdef EDUPPKG
 374     case EDUPPKG: return "duplicate package name";
 375 #endif
 376 #ifdef EEXIST
 377     case EEXIST: return "file already exists";
 378 #endif
 379 #ifdef EFAULT
 380     case EFAULT: return "bad address in system call argument";
 381 #endif
 382 #ifdef EFBIG
 383     case EFBIG: return "file too large";
 384 #endif
 385 #ifdef EHOSTDOWN
 386     case EHOSTDOWN: return "host is down";
 387 #endif
 388 #ifdef EHOSTUNREACH
 389     case EHOSTUNREACH: return "host is unreachable";
 390 #endif
 391 #ifdef EIDRM
 392     case EIDRM: return "identifier removed";
 393 #endif
 394 #ifdef EINIT
 395     case EINIT: return "initialization error";
 396 #endif
 397 #ifdef EINPROGRESS
 398     case EINPROGRESS: return "operation now in progress";
 399 #endif
 400 #ifdef EINTR
 401     case EINTR: return "interrupted system call";
 402 #endif
 403 #ifdef EINVAL
 404     case EINVAL: return "invalid argument";
 405 #endif
 406 #ifdef EIO
 407     case EIO: return "I/O error";
 408 #endif
 409 #ifdef EISCONN
 410     case EISCONN: return "socket is already connected";
 411 #endif
 412 #ifdef EISDIR
 413     case EISDIR: return "illegal operation on a directory";
 414 #endif
 415 #ifdef EISNAME
 416     case EISNAM: return "is a name file";
 417 #endif
 418 #ifdef ELBIN
 419     case ELBIN: return "ELBIN";
 420 #endif
 421 #ifdef EL2HLT
 422     case EL2HLT: return "level 2 halted";
 423 #endif
 424 #ifdef EL2NSYNC
 425     case EL2NSYNC: return "level 2 not synchronized";
 426 #endif
 427 #ifdef EL3HLT
 428     case EL3HLT: return "level 3 halted";
 429 #endif
 430 #ifdef EL3RST
 431     case EL3RST: return "level 3 reset";
 432 #endif
 433 #ifdef ELIBACC
 434     case ELIBACC: return "can not access a needed shared library";
 435 #endif
 436 #ifdef ELIBBAD
 437     case ELIBBAD: return "accessing a corrupted shared library";
 438 #endif
 439 #ifdef ELIBEXEC
 440     case ELIBEXEC: return "can not exec a shared library directly";
 441 #endif
 442 #ifdef ELIBMAX
 443     case ELIBMAX: return "attempting to link in more shared libraries than system limit";
 444 #endif
 445 #ifdef ELIBSCN
 446     case ELIBSCN: return ".lib section in a.out corrupted";
 447 #endif
 448 #ifdef ELNRNG
 449     case ELNRNG: return "link number out of range";
 450 #endif
 451 #ifdef ELOOP
 452     case ELOOP: return "too many levels of symbolic links";
 453 #endif
 454 #ifdef EMFILE
 455     case EMFILE: return "too many open files";
 456 #endif
 457 #ifdef EMLINK
 458     case EMLINK: return "too many links";
 459 #endif
 460 #ifdef EMSGSIZE
 461     case EMSGSIZE: return "message too long";
 462 #endif
 463 #ifdef EMULTIHOP
 464     case EMULTIHOP: return "multihop attempted";
 465 #endif
 466 #ifdef ENAMETOOLONG
 467     case ENAMETOOLONG: return "file name too long";
 468 #endif
 469 #ifdef ENAVAIL
 470     case ENAVAIL: return "not available";
 471 #endif
 472 #ifdef ENET
 473     case ENET: return "ENET";
 474 #endif
 475 #ifdef ENETDOWN
 476     case ENETDOWN: return "network is down";
 477 #endif
 478 #ifdef ENETRESET
 479     case ENETRESET: return "network dropped connection on reset";
 480 #endif
 481 #ifdef ENETUNREACH
 482     case ENETUNREACH: return "network is unreachable";
 483 #endif
 484 #ifdef ENFILE
 485     case ENFILE: return "file table overflow";
 486 #endif
 487 #ifdef ENOANO
 488     case ENOANO: return "anode table overflow";
 489 #endif
 490 #if defined(ENOBUFS) && (!defined(ENOSR) || (ENOBUFS != ENOSR))
 491     case ENOBUFS: return "no buffer space available";
 492 #endif
 493 #ifdef ENOCSI
 494     case ENOCSI: return "no CSI structure available";
 495 #endif
 496 #ifdef ENODATA
 497     case ENODATA: return "no data available";
 498 #endif
 499 #ifdef ENODEV
 500     case ENODEV: return "no such device";
 501 #endif
 502 #ifdef ENOENT
 503     case ENOENT: return "no such file or directory";
 504 #endif
 505 #ifdef ENOEXEC
 506     case ENOEXEC: return "exec format error";
 507 #endif
 508 #ifdef ENOLCK
 509     case ENOLCK: return "no locks available";
 510 #endif
 511 #ifdef ENOLINK
 512     case ENOLINK: return "link has be severed";
 513 #endif
 514 #ifdef ENOMEM
 515     case ENOMEM: return "not enough memory";
 516 #endif
 517 #ifdef ENOMSG
 518     case ENOMSG: return "no message of desired type";
 519 #endif
 520 #ifdef ENONET
 521     case ENONET: return "machine is not on the network";
 522 #endif
 523 #ifdef ENOPKG
 524     case ENOPKG: return "package not installed";
 525 #endif
 526 #ifdef ENOPROTOOPT
 527     case ENOPROTOOPT: return "bad proocol option";
 528 #endif
 529 #ifdef ENOSPC
 530     case ENOSPC: return "no space left on device";
 531 #endif
 532 #ifdef ENOSR
 533     case ENOSR: return "out of stream resources";
 534 #endif
 535 #ifdef ENOSTR
 536     case ENOSTR: return "not a stream device";
 537 #endif
 538 #ifdef ENOSYM
 539     case ENOSYM: return "unresolved symbol name";
 540 #endif
 541 #ifdef ENOSYS
 542     case ENOSYS: return "function not implemented";
 543 #endif
 544 #ifdef ENOTBLK
 545     case ENOTBLK: return "block device required";
 546 #endif
 547 #ifdef ENOTCONN
 548     case ENOTCONN: return "socket is not connected";
 549 #endif
 550 #ifdef ENOTDIR
 551     case ENOTDIR: return "not a directory";
 552 #endif
 553 #ifdef ENOTEMPTY
 554     case ENOTEMPTY: return "directory not empty";
 555 #endif
 556 #ifdef ENOTNAM
 557     case ENOTNAM: return "not a name file";
 558 #endif
 559 #ifdef ENOTSOCK
 560     case ENOTSOCK: return "socket operation on non-socket";
 561 #endif
 562 #ifdef ENOTTY
 563     case ENOTTY: return "inappropriate device for ioctl";
 564 #endif
 565 #ifdef ENOTUNIQ
 566     case ENOTUNIQ: return "name not unique on network";
 567 #endif
 568 #ifdef ENXIO
 569     case ENXIO: return "no such device or address";
 570 #endif
 571 #ifdef EOPNOTSUPP
 572     case EOPNOTSUPP: return "operation not supported on socket";
 573 #endif
 574 #ifdef EPERM
 575     case EPERM: return "not owner";
 576 #endif
 577 #ifdef EPFNOSUPPORT
 578     case EPFNOSUPPORT: return "protocol family not supported";
 579 #endif
 580 #ifdef EPIPE
 581     case EPIPE: return "broken pipe";
 582 #endif
 583 #ifdef EPROCLIM
 584     case EPROCLIM: return "too many processes";
 585 #endif
 586 #ifdef EPROCUNAVAIL
 587     case EPROCUNAVAIL: return "bad procedure for program";
 588 #endif
 589 #ifdef EPROGMISMATCH
 590     case EPROGMISMATCH: return "program version wrong";
 591 #endif
 592 #ifdef EPROGUNAVAIL
 593     case EPROGUNAVAIL: return "RPC program not available";
 594 #endif
 595 #ifdef EPROTO
 596     case EPROTO: return "protocol error";
 597 #endif
 598 #ifdef EPROTONOSUPPORT
 599     case EPROTONOSUPPORT: return "protocol not suppored";
 600 #endif
 601 #ifdef EPROTOTYPE
 602     case EPROTOTYPE: return "protocol wrong type for socket";
 603 #endif
 604 #ifdef ERANGE
 605     case ERANGE: return "math result unrepresentable";
 606 #endif
 607 #if defined(EREFUSED) && (!defined(ECONNREFUSED) || (EREFUSED != ECONNREFUSED))
 608     case EREFUSED: return "EREFUSED";
 609 #endif
 610 #ifdef EREMCHG
 611     case EREMCHG: return "remote address changed";
 612 #endif
 613 #ifdef EREMDEV
 614     case EREMDEV: return "remote device";
 615 #endif
 616 #ifdef EREMOTE
 617     case EREMOTE: return "pathname hit remote file system";
 618 #endif
 619 #ifdef EREMOTEIO
 620     case EREMOTEIO: return "remote i/o error";
 621 #endif
 622 #ifdef EREMOTERELEASE
 623     case EREMOTERELEASE: return "EREMOTERELEASE";
 624 #endif
 625 #ifdef EROFS
 626     case EROFS: return "read-only file system";
 627 #endif
 628 #ifdef ERPCMISMATCH
 629     case ERPCMISMATCH: return "RPC version is wrong";
 630 #endif
 631 #ifdef ERREMOTE
 632     case ERREMOTE: return "object is remote";
 633 #endif
 634 #ifdef ESHUTDOWN
 635     case ESHUTDOWN: return "can't send afer socket shutdown";
 636 #endif
 637 #ifdef ESOCKTNOSUPPORT
 638     case ESOCKTNOSUPPORT: return "socket type not supported";
 639 #endif
 640 #ifdef ESPIPE
 641     case ESPIPE: return "invalid seek";
 642 #endif
 643 #ifdef ESRCH
 644     case ESRCH: return "no such process";
 645 #endif
 646 #ifdef ESRMNT
 647     case ESRMNT: return "srmount error";
 648 #endif
 649 #ifdef ESTALE
 650     case ESTALE: return "stale remote file handle";
 651 #endif
 652 #ifdef ESUCCESS
 653     case ESUCCESS: return "Error 0";
 654 #endif
 655 #ifdef ETIME
 656     case ETIME: return "timer expired";
 657 #endif
 658 #ifdef ETIMEDOUT
 659     case ETIMEDOUT: return "connection timed out";
 660 #endif
 661 #ifdef ETOOMANYREFS
 662     case ETOOMANYREFS: return "too many references: can't splice";
 663 #endif
 664 #ifdef ETXTBSY
 665     case ETXTBSY: return "text file or pseudo-device busy";
 666 #endif
 667 #ifdef EUCLEAN
 668     case EUCLEAN: return "structure needs cleaning";
 669 #endif
 670 #ifdef EUNATCH
 671     case EUNATCH: return "protocol driver not attached";
 672 #endif
 673 #ifdef EUSERS
 674     case EUSERS: return "too many users";
 675 #endif
 676 #ifdef EVERSION
 677     case EVERSION: return "version mismatch";
 678 #endif
 679 #if defined(EWOULDBLOCK) && (!defined(EAGAIN) || (EWOULDBLOCK != EAGAIN))
 680     case EWOULDBLOCK: return "operation would block";
 681 #endif
 682 #ifdef EXDEV
 683     case EXDEV: return "cross-domain link";
 684 #endif
 685 #ifdef EXFULL
 686     case EXFULL: return "message tables full";
 687 #endif
 688     }
 689 #else /* NO_SYS_ERRLIST */
 690   extern int sys_nerr;
 691   extern char *sys_errlist[];
 692
 693   if ((errnum > 0) && (errnum <= sys_nerr))
 694     return sys_errlist [errnum];
 695 #endif /* NO_SYS_ERRLIST */
 696
 697   msg = g_static_private_get (&msg_private);
 698   if (!msg)
 699     {
 700       msg = g_new (gchar, 64);
 701       g_static_private_set (&msg_private, msg, g_free);
 702     }
 703
 704   sprintf (msg, "unknown error (%d)", errnum);
 705
 706   return msg;
 707 }
 708
 709 G_CONST_RETURN gchar*
 710 g_strsignal (gint signum)
 711 {
 712   static GStaticPrivate msg_private = G_STATIC_PRIVATE_INIT;
 713   char *msg;
 714
 715 #ifdef HAVE_STRSIGNAL
 716 #if defined(G_OS_BEOS) || defined(G_WITH_CYGWIN)
 717 extern const char *strsignal(int);
 718 #else
 719   /* this is declared differently (const) in string.h on BeOS */
 720   extern char *strsignal (int sig);
 721 #endif /* !G_OS_BEOS && !G_WITH_CYGWIN */
 722   return strsignal (signum);
 723 #elif NO_SYS_SIGLIST
 724   switch (signum)
 725     {
 726 #ifdef SIGHUP
 727     case SIGHUP: return "Hangup";
 728 #endif
 729 #ifdef SIGINT
 730     case SIGINT: return "Interrupt";
 731 #endif
 732 #ifdef SIGQUIT
 733     case SIGQUIT: return "Quit";
 734 #endif
 735 #ifdef SIGILL
 736     case SIGILL: return "Illegal instruction";
 737 #endif
 738 #ifdef SIGTRAP
 739     case SIGTRAP: return "Trace/breakpoint trap";
 740 #endif
 741 #ifdef SIGABRT
 742     case SIGABRT: return "IOT trap/Abort";
 743 #endif
 744 #ifdef SIGBUS
 745     case SIGBUS: return "Bus error";
 746 #endif
 747 #ifdef SIGFPE
 748     case SIGFPE: return "Floating point exception";
 749 #endif
 750 #ifdef SIGKILL
 751     case SIGKILL: return "Killed";
 752 #endif
 753 #ifdef SIGUSR1
 754     case SIGUSR1: return "User defined signal 1";
 755 #endif
 756 #ifdef SIGSEGV
 757     case SIGSEGV: return "Segmentation fault";
 758 #endif
 759 #ifdef SIGUSR2
 760     case SIGUSR2: return "User defined signal 2";
 761 #endif
 762 #ifdef SIGPIPE
 763     case SIGPIPE: return "Broken pipe";
 764 #endif
 765 #ifdef SIGALRM
 766     case SIGALRM: return "Alarm clock";
 767 #endif
 768 #ifdef SIGTERM
 769     case SIGTERM: return "Terminated";
 770 #endif
 771 #ifdef SIGSTKFLT
 772     case SIGSTKFLT: return "Stack fault";
 773 #endif
 774 #ifdef SIGCHLD
 775     case SIGCHLD: return "Child exited";
 776 #endif
 777 #ifdef SIGCONT
 778     case SIGCONT: return "Continued";
 779 #endif
 780 #ifdef SIGSTOP
 781     case SIGSTOP: return "Stopped (signal)";
 782 #endif
 783 #ifdef SIGTSTP
 784     case SIGTSTP: return "Stopped";
 785 #endif
 786 #ifdef SIGTTIN
 787     case SIGTTIN: return "Stopped (tty input)";
 788 #endif
 789 #ifdef SIGTTOU
 790     case SIGTTOU: return "Stopped (tty output)";
 791 #endif
 792 #ifdef SIGURG
 793     case SIGURG: return "Urgent condition";
 794 #endif
 795 #ifdef SIGXCPU
 796     case SIGXCPU: return "CPU time limit exceeded";
 797 #endif
 798 #ifdef SIGXFSZ
 799     case SIGXFSZ: return "File size limit exceeded";
 800 #endif
 801 #ifdef SIGVTALRM
 802     case SIGVTALRM: return "Virtual time alarm";
 803 #endif
 804 #ifdef SIGPROF
 805     case SIGPROF: return "Profile signal";
 806 #endif
 807 #ifdef SIGWINCH
 808     case SIGWINCH: return "Window size changed";
 809 #endif
 810 #ifdef SIGIO
 811     case SIGIO: return "Possible I/O";
 812 #endif
 813 #ifdef SIGPWR
 814     case SIGPWR: return "Power failure";
 815 #endif
 816 #ifdef SIGUNUSED
 817     case SIGUNUSED: return "Unused signal";
 818 #endif
 819     }
 820 #else /* NO_SYS_SIGLIST */
 821
 822 #ifdef NO_SYS_SIGLIST_DECL
 823   extern char *sys_siglist[];   /*(see Tue Jan 19 00:44:24 1999 in changelog)*/
 824 #endif
 825
 826   return (char*) /* this function should return const --josh */ sys_siglist [signum];
 827 #endif /* NO_SYS_SIGLIST */
 828
 829   msg = g_static_private_get (&msg_private);
 830   if (!msg)
 831     {
 832       msg = g_new (gchar, 64);
 833       g_static_private_set (&msg_private, msg, g_free);
 834     }
 835
 836   sprintf (msg, "unknown signal (%d)", signum);
 837
 838   return msg;
 839 }
 840
 841 /* Functions g_strlcpy and g_strlcat were originally developed by
 842  * Todd C. Miller <Todd.Miller@courtesan.com> to simplify writing secure code.
 843  * See ftp://ftp.openbsd.org/pub/OpenBSD/src/lib/libc/string/strlcpy.3
 844  * for more information.
 845  */
 846
 847 #ifdef HAVE_STRLCPY
 848 /* Use the native ones, if available; they might be implemented in assembly */
 849 gsize
 850 g_strlcpy (gchar       *dest,
 851            const gchar *src,
 852            gsize        dest_size)
 853 {
 854   g_return_val_if_fail (dest != NULL, 0);
 855   g_return_val_if_fail (src  != NULL, 0);
 856
 857   return strlcpy (dest, src, dest_size);
 858 }
 859
 860 gsize
 861 g_strlcat (gchar       *dest,
 862            const gchar *src,
 863            gsize        dest_size)
 864 {
 865   g_return_val_if_fail (dest != NULL, 0);
 866   g_return_val_if_fail (src  != NULL, 0);
 867
 868   return strlcat (dest, src, dest_size);
 869 }
 870
 871 #else /* ! HAVE_STRLCPY */
 872 /* g_strlcpy
 873  *
 874  * Copy string src to buffer dest (of buffer size dest_size).  At most
 875  * dest_size-1 characters will be copied.  Always NUL terminates
 876  * (unless dest_size == 0).  This function does NOT allocate memory.
 877  * Unlike strncpy, this function doesn't pad dest (so it's often faster).
 878  * Returns size of attempted result, strlen(src),
 879  * so if retval >= dest_size, truncation occurred.
 880  */
 881 gsize
 882 g_strlcpy (gchar       *dest,
 883            const gchar *src,
 884            gsize        dest_size)
 885 {
 886   register gchar *d = dest;
 887   register const gchar *s = src;
 888   register gsize n = dest_size;
 889
 890   g_return_val_if_fail (dest != NULL, 0);
 891   g_return_val_if_fail (src  != NULL, 0);
 892
 893   /* Copy as many bytes as will fit */
 894   if (n != 0 && --n != 0)
 895     do
 896       {
 897         register gchar c = *s++;
 898
 899         *d++ = c;
 900         if (c == 0)
 901           break;
 902       }
 903     while (--n != 0);
 904
 905   /* If not enough room in dest, add NUL and traverse rest of src */
 906   if (n == 0)
 907     {
 908       if (dest_size != 0)
 909         *d = 0;
 910       while (*s++)
 911         ;
 912     }
 913
 914   return s - src - 1;  /* count does not include NUL */
 915 }
 916
 917 /* g_strlcat
 918  *
 919  * Appends string src to buffer dest (of buffer size dest_size).
 920  * At most dest_size-1 characters will be copied.
 921  * Unlike strncat, dest_size is the full size of dest, not the space left over.
 922  * This function does NOT allocate memory.
 923  * This always NUL terminates (unless siz == 0 or there were no NUL characters
 924  * in the dest_size characters of dest to start with).
 925  * Returns size of attempted result, which is
 926  * MIN (dest_size, strlen (original dest)) + strlen (src),
 927  * so if retval >= dest_size, truncation occurred.
 928  */
 929 gsize
 930 g_strlcat (gchar       *dest,
 931            const gchar *src,
 932            gsize        dest_size)
 933 {
 934   register gchar *d = dest;
 935   register const gchar *s = src;
 936   register gsize bytes_left = dest_size;
 937   gsize dlength;  /* Logically, MIN (strlen (d), dest_size) */
 938
 939   g_return_val_if_fail (dest != NULL, 0);
 940   g_return_val_if_fail (src  != NULL, 0);
 941
 942   /* Find the end of dst and adjust bytes left but don't go past end */
 943   while (*d != 0 && bytes_left-- != 0)
 944     d++;
 945   dlength = d - dest;
 946   bytes_left = dest_size - dlength;
 947
 948   if (bytes_left == 0)
 949     return dlength + strlen (s);
 950
 951   while (*s != 0)
 952     {
 953       if (bytes_left != 1)
 954         {
 955           *d++ = *s;
 956           bytes_left--;
 957         }
 958       s++;
 959     }
 960   *d = 0;
 961
 962   return dlength + (s - src);  /* count does not include NUL */
 963 }
 964 #endif /* ! HAVE_STRLCPY */
 965
 966 gchar*
 967 g_strdown (gchar *string)
 968 {
 969   register guchar *s;
 970
 971   g_return_val_if_fail (string != NULL, NULL);
 972
 973   s = (guchar *) string;
 974
 975   while (*s)
 976     {
 977       *s = tolower (*s);
 978       s++;
 979     }
 980
 981   return (gchar *) string;
 982 }
 983
 984 gchar*
 985 g_strup (gchar *string)
 986 {
 987   register guchar *s;
 988
 989   g_return_val_if_fail (string != NULL, NULL);
 990
 991   s = (guchar *) string;
 992
 993   while (*s)
 994     {
 995       *s = toupper (*s);
 996       s++;
 997     }
 998
 999   return (gchar *) string;
1000 }
1001
1002 gchar*
1003 g_strreverse (gchar *string)
1004 {
1005   g_return_val_if_fail (string != NULL, NULL);
1006
1007   if (*string)
1008     {
1009       register gchar *h, *t;
1010
1011       h = string;
1012       t = string + strlen (string) - 1;
1013
1014       while (h < t)
1015         {
1016           register gchar c;
1017
1018           c = *h;
1019           *h = *t;
1020           h++;
1021           *t = c;
1022           t--;
1023         }
1024     }
1025
1026   return string;
1027 }
1028
1029 gint
1030 g_strcasecmp (const gchar *s1,
1031               const gchar *s2)
1032 {
1033 #ifdef HAVE_STRCASECMP
1034   g_return_val_if_fail (s1 != NULL, 0);
1035   g_return_val_if_fail (s2 != NULL, 0);
1036
1037   return strcasecmp (s1, s2);
1038 #else
1039   gint c1, c2;
1040
1041   g_return_val_if_fail (s1 != NULL, 0);
1042   g_return_val_if_fail (s2 != NULL, 0);
1043
1044   while (*s1 && *s2)
1045     {
1046       /* According to A. Cox, some platforms have islower's that
1047        * don't work right on non-uppercase
1048        */
1049       c1 = isupper ((guchar)*s1) ? tolower ((guchar)*s1) : *s1;
1050       c2 = isupper ((guchar)*s2) ? tolower ((guchar)*s2) : *s2;
1051       if (c1 != c2)
1052         return (c1 - c2);
1053       s1++; s2++;
1054     }
1055
1056   return (((gint)(guchar) *s1) - ((gint)(guchar) *s2));
1057 #endif
1058 }
1059
1060 gint
1061 g_strncasecmp (const gchar *s1,
1062                const gchar *s2,
1063                guint n)
1064 {
1065 #ifdef HAVE_STRNCASECMP
1066   return strncasecmp (s1, s2, n);
1067 #else
1068   gint c1, c2;
1069
1070   g_return_val_if_fail (s1 != NULL, 0);
1071   g_return_val_if_fail (s2 != NULL, 0);
1072
1073   while (n && *s1 && *s2)
1074     {
1075       n -= 1;
1076       /* According to A. Cox, some platforms have islower's that
1077        * don't work right on non-uppercase
1078        */
1079       c1 = isupper ((guchar)*s1) ? tolower ((guchar)*s1) : *s1;
1080       c2 = isupper ((guchar)*s2) ? tolower ((guchar)*s2) : *s2;
1081       if (c1 != c2)
1082         return (c1 - c2);
1083       s1++; s2++;
1084     }
1085
1086   if (n)
1087     return (((gint) (guchar) *s1) - ((gint) (guchar) *s2));
1088   else
1089     return 0;
1090 #endif
1091 }
1092
1093 gchar*
1094 g_strdelimit (gchar       *string,
1095               const gchar *delimiters,
1096               gchar        new_delim)
1097 {
1098   register gchar *c;
1099
1100   g_return_val_if_fail (string != NULL, NULL);
1101
1102   if (!delimiters)
1103     delimiters = G_STR_DELIMITERS;
1104
1105   for (c = string; *c; c++)
1106     {
1107       if (strchr (delimiters, *c))
1108         *c = new_delim;
1109     }
1110
1111   return string;
1112 }
1113
1114 gchar*
1115 g_strcanon (gchar       *string,
1116             const gchar *valid_chars,
1117             gchar        substitutor)
1118 {
1119   register gchar *c;
1120
1121   g_return_val_if_fail (string != NULL, NULL);
1122   g_return_val_if_fail (valid_chars != NULL, NULL);
1123
1124   for (c = string; *c; c++)
1125     {
1126       if (!strchr (valid_chars, *c))
1127         *c = substitutor;
1128     }
1129
1130   return string;
1131 }
1132
1133 gchar*
1134 g_strcompress (const gchar *source)
1135 {
1136   const gchar *p = source, *octal;
1137   gchar *dest = g_malloc (strlen (source) + 1);
1138   gchar *q = dest;
1139
1140   while (*p)
1141     {
1142       if (*p == '\\')
1143         {
1144           p++;
1145           switch (*p)
1146             {
1147             case '0':  case '1':  case '2':  case '3':  case '4':
1148             case '5':  case '6':  case '7':
1149               *q = 0;
1150               octal = p;
1151               while ((p < octal + 3) && (*p >= '0') && (*p <= '7'))
1152                 {
1153                   *q = (*q * 8) + (*p - '0');
1154                   p++;
1155                 }
1156               q++;
1157               p--;
1158               break;
1159             case 'b':
1160               *q++ = '\b';
1161               break;
1162             case 'f':
1163               *q++ = '\f';
1164               break;
1165             case 'n':
1166               *q++ = '\n';
1167               break;
1168             case 'r':
1169               *q++ = '\r';
1170               break;
1171             case 't':
1172               *q++ = '\t';
1173               break;
1174             default:            /* Also handles \" and \\ */
1175               *q++ = *p;
1176               break;
1177             }
1178         }
1179       else
1180         *q++ = *p;
1181       p++;
1182     }
1183   *q = 0;
1184
1185   return dest;
1186 }
1187
1188 gchar *
1189 g_strescape (const gchar *source,
1190              const gchar *exceptions)
1191 {
1192   const guchar *p;
1193   gchar *dest;
1194   gchar *q;
1195   guchar excmap[256];
1196
1197   g_return_val_if_fail (source != NULL, NULL);
1198
1199   p = (guchar *) source;
1200   /* Each source byte needs maximally four destination chars (\777) */
1201   q = dest = g_malloc (strlen (source) * 4 + 1);
1202
1203   memset (excmap, 0, 256);
1204   if (exceptions)
1205     {
1206       guchar *e = (guchar *) exceptions;
1207
1208       while (*e)
1209         {
1210           excmap[*e] = 1;
1211           e++;
1212         }
1213     }
1214
1215   while (*p)
1216     {
1217       if (excmap[*p])
1218         *q++ = *p;
1219       else
1220         {
1221           switch (*p)
1222             {
1223             case '\b':
1224               *q++ = '\\';
1225               *q++ = 'b';
1226               break;
1227             case '\f':
1228               *q++ = '\\';
1229               *q++ = 'f';
1230               break;
1231             case '\n':
1232               *q++ = '\\';
1233               *q++ = 'n';
1234               break;
1235             case '\r':
1236               *q++ = '\\';
1237               *q++ = 'r';
1238               break;
1239             case '\t':
1240               *q++ = '\\';
1241               *q++ = 't';
1242               break;
1243             case '\\':
1244               *q++ = '\\';
1245               *q++ = '\\';
1246               break;
1247             case '"':
1248               *q++ = '\\';
1249               *q++ = '"';
1250               break;
1251             default:
1252               if ((*p < ' ') || (*p >= 0177))
1253                 {
1254                   *q++ = '\\';
1255                   *q++ = '0' + (((*p) >> 6) & 07);
1256                   *q++ = '0' + (((*p) >> 3) & 07);
1257                   *q++ = '0' + ((*p) & 07);
1258                 }
1259               else
1260                 *q++ = *p;
1261               break;
1262             }
1263         }
1264       p++;
1265     }
1266   *q = 0;
1267   return dest;
1268 }
1269
1270 gchar*
1271 g_strchug (gchar *string)
1272 {
1273   guchar *start;
1274
1275   g_return_val_if_fail (string != NULL, NULL);
1276
1277   for (start = (guchar*) string; *start && isspace (*start); start++)
1278     ;
1279
1280   g_memmove (string, start, strlen ((gchar *) start) + 1);
1281
1282   return string;
1283 }
1284
1285 gchar*
1286 g_strchomp (gchar *string)
1287 {
1288   gchar *s;
1289
1290   g_return_val_if_fail (string != NULL, NULL);
1291
1292   if (!*string)
1293     return string;
1294
1295   for (s = string + strlen (string) - 1; s >= string && isspace ((guchar)*s);
1296        s--)
1297     *s = '\0';
1298
1299   return string;
1300 }
1301
1302 gchar**
1303 g_strsplit (const gchar *string,
1304             const gchar *delimiter,
1305             gint         max_tokens)
1306 {
1307   GSList *string_list = NULL, *slist;
1308   gchar **str_array, *s;
1309   guint n = 1;
1310
1311   g_return_val_if_fail (string != NULL, NULL);
1312   g_return_val_if_fail (delimiter != NULL, NULL);
1313
1314   if (max_tokens < 1)
1315     max_tokens = G_MAXINT;
1316
1317   s = strstr (string, delimiter);
1318   if (s)
1319     {
1320       guint delimiter_len = strlen (delimiter);
1321
1322       do
1323         {
1324           guint len;
1325           gchar *new_string;
1326
1327           len = s - string;
1328           new_string = g_new (gchar, len + 1);
1329           strncpy (new_string, string, len);
1330           new_string[len] = 0;
1331           string_list = g_slist_prepend (string_list, new_string);
1332           n++;
1333           string = s + delimiter_len;
1334           s = strstr (string, delimiter);
1335         }
1336       while (--max_tokens && s);
1337     }
1338   string_list = g_slist_prepend (string_list, g_strdup (string));
1339
1340   str_array = g_new (gchar*, n + 1);
1341
1342   str_array[n--] = NULL;
1343   for (slist = string_list; slist; slist = slist->next)
1344     str_array[n--] = slist->data;
1345
1346   g_slist_free (string_list);
1347
1348   return str_array;
1349 }
1350
1351 void
1352 g_strfreev (gchar **str_array)
1353 {
1354   if (str_array)
1355     {
1356       int i;
1357
1358       for(i = 0; str_array[i] != NULL; i++)
1359         g_free(str_array[i]);
1360
1361       g_free (str_array);
1362     }
1363 }
1364
1365 /**
1366  * g_strdupv:
1367  * @str_array: %NULL-terminated array of strings
1368  *
1369  * Copies %NULL-terminated array of strings. The copy is a deep copy;
1370  * the new array should be freed by first freeing each string, then
1371  * the array itself. g_strfreev() does this for you. If called
1372  * on a %NULL value, g_strdupv() simply returns %NULL.
1373  *
1374  * Return value: a new %NULL-terminated array of strings
1375  **/
1376 gchar**
1377 g_strdupv (gchar **str_array)
1378 {
1379   if (str_array)
1380     {
1381       gint i;
1382       gchar **retval;
1383
1384       i = 0;
1385       while (str_array[i])
1386         ++i;
1387
1388       retval = g_new (gchar*, i + 1);
1389
1390       i = 0;
1391       while (str_array[i])
1392         {
1393           retval[i] = g_strdup (str_array[i]);
1394           ++i;
1395         }
1396       retval[i] = NULL;
1397
1398       return retval;
1399     }
1400   else
1401     return NULL;
1402 }
1403
1404 gchar*
1405 g_strjoinv (const gchar  *separator,
1406             gchar       **str_array)
1407 {
1408   gchar *string;
1409   gchar *ptr;
1410
1411   g_return_val_if_fail (str_array != NULL, NULL);
1412
1413   if (separator == NULL)
1414     separator = "";
1415
1416   if (*str_array)
1417     {
1418       guint i, len;
1419       guint separator_len;
1420
1421       separator_len = strlen (separator);
1422       /* First part, getting length */
1423       len = 1 + strlen (str_array[0]);
1424       for (i = 1; str_array[i] != NULL; i++)
1425         len += strlen (str_array[i]);
1426       len += separator_len * (i - 1);
1427
1428       /* Second part, building string */
1429       string = g_new (gchar, len);
1430       ptr = g_stpcpy (string, *str_array);
1431       for (i = 1; str_array[i] != NULL; i++)
1432         {
1433           ptr = g_stpcpy (ptr, separator);
1434           ptr = g_stpcpy (ptr, str_array[i]);
1435         }
1436       }
1437   else
1438     string = g_strdup ("");
1439
1440   return string;
1441 }
1442
1443 gchar*
1444 g_strjoin (const gchar  *separator,
1445            ...)
1446 {
1447   gchar *string, *s;
1448   va_list args;
1449   guint len;
1450   guint separator_len;
1451   gchar *ptr;
1452
1453   if (separator == NULL)
1454     separator = "";
1455
1456   separator_len = strlen (separator);
1457
1458   va_start (args, separator);
1459
1460   s = va_arg (args, gchar*);
1461
1462   if (s)
1463     {
1464       /* First part, getting length */
1465       len = 1 + strlen (s);
1466
1467       s = va_arg (args, gchar*);
1468       while (s)
1469         {
1470           len += separator_len + strlen (s);
1471           s = va_arg (args, gchar*);
1472         }
1473       va_end (args);
1474
1475       /* Second part, building string */
1476       string = g_new (gchar, len);
1477
1478       va_start (args, separator);
1479
1480       s = va_arg (args, gchar*);
1481       ptr = g_stpcpy (string, s);
1482
1483       s = va_arg (args, gchar*);
1484       while (s)
1485         {
1486           ptr = g_stpcpy (ptr, separator);
1487           ptr = g_stpcpy (ptr, s);
1488           s = va_arg (args, gchar*);
1489         }
1490     }
1491   else
1492     string = g_strdup ("");
1493
1494   va_end (args);
1495
1496   return string;
1497 }