1 /* GLIB - Library of useful routines for C programming
2 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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.
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.
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.
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/.
33 #define _GNU_SOURCE /* For stpcpy */
41 #include <ctype.h> /* For tolower() */
42 #if !defined (HAVE_STRSIGNAL) || !defined(NO_SYS_SIGLIST_DECL)
47 #include "gprintfint.h"
53 /* do not include <unistd.h> in this place since it
54 * inteferes with g_strsignal() on some OSes
57 static const guint16 ascii_table_data[256] = {
58 0x004, 0x004, 0x004, 0x004, 0x004, 0x004, 0x004, 0x004,
59 0x004, 0x104, 0x104, 0x004, 0x104, 0x104, 0x004, 0x004,
60 0x004, 0x004, 0x004, 0x004, 0x004, 0x004, 0x004, 0x004,
61 0x004, 0x004, 0x004, 0x004, 0x004, 0x004, 0x004, 0x004,
62 0x140, 0x0d0, 0x0d0, 0x0d0, 0x0d0, 0x0d0, 0x0d0, 0x0d0,
63 0x0d0, 0x0d0, 0x0d0, 0x0d0, 0x0d0, 0x0d0, 0x0d0, 0x0d0,
64 0x459, 0x459, 0x459, 0x459, 0x459, 0x459, 0x459, 0x459,
65 0x459, 0x459, 0x0d0, 0x0d0, 0x0d0, 0x0d0, 0x0d0, 0x0d0,
66 0x0d0, 0x653, 0x653, 0x653, 0x653, 0x653, 0x653, 0x253,
67 0x253, 0x253, 0x253, 0x253, 0x253, 0x253, 0x253, 0x253,
68 0x253, 0x253, 0x253, 0x253, 0x253, 0x253, 0x253, 0x253,
69 0x253, 0x253, 0x253, 0x0d0, 0x0d0, 0x0d0, 0x0d0, 0x0d0,
70 0x0d0, 0x473, 0x473, 0x473, 0x473, 0x473, 0x473, 0x073,
71 0x073, 0x073, 0x073, 0x073, 0x073, 0x073, 0x073, 0x073,
72 0x073, 0x073, 0x073, 0x073, 0x073, 0x073, 0x073, 0x073,
73 0x073, 0x073, 0x073, 0x0d0, 0x0d0, 0x0d0, 0x0d0, 0x004
74 /* the upper 128 are all zeroes */
77 #if defined(G_PLATFORM_WIN32) && defined(__GNUC__)
80 const guint16 * const g_ascii_table = ascii_table_data;
83 g_strdup (const gchar *str)
89 new_str = g_new (char, strlen (str) + 1);
90 strcpy (new_str, str);
99 g_memdup (gconstpointer mem,
106 new_mem = g_malloc (byte_size);
107 memcpy (new_mem, mem, byte_size);
116 g_strndup (const gchar *str,
123 new_str = g_new (gchar, n + 1);
124 strncpy (new_str, str, n);
134 g_strnfill (gsize length,
139 str = g_new (gchar, length + 1);
140 memset (str, (guchar)fill_char, length);
148 * @dest: destination buffer.
149 * @src: source string.
151 * Copies a nul-terminated string into the dest buffer, include the
152 * trailing nul, and return a pointer to the trailing nul byte.
153 * This is useful for concatenating multiple strings together
154 * without having to repeatedly scan for the end.
156 * Return value: a pointer to trailing nul byte.
159 g_stpcpy (gchar *dest,
163 g_return_val_if_fail (dest != NULL, NULL);
164 g_return_val_if_fail (src != NULL, NULL);
165 return stpcpy (dest, src);
167 register gchar *d = dest;
168 register const gchar *s = src;
170 g_return_val_if_fail (dest != NULL, NULL);
171 g_return_val_if_fail (src != NULL, NULL);
174 while (*s++ != '\0');
181 g_strdup_vprintf (const gchar *format,
185 #ifdef HAVE_VASPRINTF
186 if (_g_vasprintf (&buffer, format, args1) < 0)
188 else if (!g_mem_is_system_malloc ())
190 gchar *buffer1 = g_strdup (buffer);
197 G_VA_COPY (args2, args1);
199 buffer = g_new (gchar, g_printf_string_upper_bound (format, args1));
201 _g_vsprintf (buffer, format, args2);
208 g_strdup_printf (const gchar *format,
214 va_start (args, format);
215 buffer = g_strdup_vprintf (format, args);
222 g_strconcat (const gchar *string1, ...)
230 g_return_val_if_fail (string1 != NULL, NULL);
232 l = 1 + strlen (string1);
233 va_start (args, string1);
234 s = va_arg (args, gchar*);
238 s = va_arg (args, gchar*);
242 concat = g_new (gchar, l);
245 ptr = g_stpcpy (ptr, string1);
246 va_start (args, string1);
247 s = va_arg (args, gchar*);
250 ptr = g_stpcpy (ptr, s);
251 s = va_arg (args, gchar*);
260 * @nptr: the string to convert to a numeric value.
261 * @endptr: if non-%NULL, it returns the character after
262 * the last character used in the conversion.
264 * Converts a string to a #gdouble value.
265 * It calls the standard strtod() function to handle the conversion, but
266 * if the string is not completely converted it attempts the conversion
267 * again with g_ascii_strtod(), and returns the best match.
269 * This function should seldomly be used. The normal situation when reading
270 * numbers not for human consumption is to use g_ascii_strtod(). Only when
271 * you know that you must expect both locale formatted and C formatted numbers
272 * should you use this. Make sure that you don't pass strings such as comma
273 * separated lists of values, since the commas may be interpreted as a decimal
274 * point in some locales, causing unexpected results.
276 * Return value: the #gdouble value.
279 g_strtod (const gchar *nptr,
287 g_return_val_if_fail (nptr != NULL, 0);
292 val_1 = strtod (nptr, &fail_pos_1);
294 if (fail_pos_1 && fail_pos_1[0] != 0)
295 val_2 = g_ascii_strtod (nptr, &fail_pos_2);
297 if (!fail_pos_1 || fail_pos_1[0] == 0 || fail_pos_1 >= fail_pos_2)
300 *endptr = fail_pos_1;
306 *endptr = fail_pos_2;
313 * @nptr: the string to convert to a numeric value.
314 * @endptr: if non-%NULL, it returns the character after
315 * the last character used in the conversion.
317 * Converts a string to a #gdouble value.
318 * This function behaves like the standard strtod() function
319 * does in the C locale. It does this without actually
320 * changing the current locale, since that would not be
323 * This function is typically used when reading configuration
324 * files or other non-user input that should be locale independent.
325 * To handle input from the user you should normally use the
326 * locale-sensitive system strtod() function.
328 * To convert from a string to #gdouble in a locale-insensitive
329 * way, use g_ascii_dtostr().
331 * If the correct value would cause overflow, plus or minus %HUGE_VAL
332 * is returned (according to the sign of the value), and %ERANGE is
333 * stored in %errno. If the correct value would cause underflow,
334 * zero is returned and %ERANGE is stored in %errno.
336 * This function resets %errno before calling strtod() so that
337 * you can reliably detect overflow and underflow.
339 * Return value: the #gdouble value.
342 g_ascii_strtod (const gchar *nptr,
347 struct lconv *locale_data;
348 const char *decimal_point;
349 int decimal_point_len;
350 const char *p, *decimal_point_pos;
351 const char *end = NULL; /* Silence gcc */
353 g_return_val_if_fail (nptr != NULL, 0);
357 locale_data = localeconv ();
358 decimal_point = locale_data->decimal_point;
359 decimal_point_len = strlen (decimal_point);
361 g_assert (decimal_point_len != 0);
363 decimal_point_pos = NULL;
364 if (decimal_point[0] != '.' ||
365 decimal_point[1] != 0)
368 /* Skip leading space */
369 while (g_ascii_isspace (*p))
372 /* Skip leading optional sign */
373 if (*p == '+' || *p == '-')
377 (p[1] == 'x' || p[1] == 'X'))
380 /* HEX - find the (optional) decimal point */
382 while (g_ascii_isxdigit (*p))
387 decimal_point_pos = p++;
389 while (g_ascii_isxdigit (*p))
392 if (*p == 'p' || *p == 'P')
394 if (*p == '+' || *p == '-')
396 while (g_ascii_isdigit (*p))
403 while (g_ascii_isdigit (*p))
408 decimal_point_pos = p++;
410 while (g_ascii_isdigit (*p))
413 if (*p == 'e' || *p == 'E')
415 if (*p == '+' || *p == '-')
417 while (g_ascii_isdigit (*p))
422 /* For the other cases, we need not convert the decimal point */
425 /* Set errno to zero, so that we can distinguish zero results
429 if (decimal_point_pos)
433 /* We need to convert the '.' to the locale specific decimal point */
434 copy = g_malloc (end - nptr + 1 + decimal_point_len);
437 memcpy (c, nptr, decimal_point_pos - nptr);
438 c += decimal_point_pos - nptr;
439 memcpy (c, decimal_point, decimal_point_len);
440 c += decimal_point_len;
441 memcpy (c, decimal_point_pos + 1, end - (decimal_point_pos + 1));
442 c += end - (decimal_point_pos + 1);
445 val = strtod (copy, &fail_pos);
449 if (fail_pos > decimal_point_pos)
450 fail_pos = (char *)nptr + (fail_pos - copy) - (decimal_point_len - 1);
452 fail_pos = (char *)nptr + (fail_pos - copy);
459 val = strtod (nptr, &fail_pos);
470 * @buffer: A buffer to place the resulting string in
471 * @buf_len: The length of the buffer.
472 * @d: The #gdouble to convert
474 * Converts a #gdouble to a string, using the '.' as
477 * This functions generates enough precision that converting
478 * the string back using g_strtod() gives the same machine-number
479 * (on machines with IEEE compatible 64bit doubles). It is
480 * guaranteed that the size of the resulting string will never
481 * be larger than @G_ASCII_DTOSTR_BUF_SIZE bytes.
483 * Return value: The pointer to the buffer with the converted string.
486 g_ascii_dtostr (gchar *buffer,
490 return g_ascii_formatd (buffer, buf_len, "%.17g", d);
495 * @buffer: A buffer to place the resulting string in
496 * @buf_len: The length of the buffer.
497 * @format: The printf-style format to use for the
498 * code to use for converting.
499 * @d: The #gdouble to convert
501 * Converts a #gdouble to a string, using the '.' as
502 * decimal point. To format the number you pass in
503 * a printf-style formating string. Allowed conversion
504 * specifiers are 'e', 'E', 'f', 'F', 'g' and 'G'.
506 * If you just want to want to serialize the value into a
507 * string, use g_ascii_dtostr().
509 * Return value: The pointer to the buffer with the converted string.
512 g_ascii_formatd (gchar *buffer,
517 struct lconv *locale_data;
518 const char *decimal_point;
519 int decimal_point_len;
524 g_return_val_if_fail (buffer != NULL, NULL);
525 g_return_val_if_fail (format[0] == '%', NULL);
526 g_return_val_if_fail (strpbrk (format + 1, "'l%") == NULL, NULL);
528 format_char = format[strlen (format) - 1];
530 g_return_val_if_fail (format_char == 'e' || format_char == 'E' ||
531 format_char == 'f' || format_char == 'F' ||
532 format_char == 'g' || format_char == 'G',
535 if (format[0] != '%')
538 if (strpbrk (format + 1, "'l%"))
541 if (!(format_char == 'e' || format_char == 'E' ||
542 format_char == 'f' || format_char == 'F' ||
543 format_char == 'g' || format_char == 'G'))
547 _g_snprintf (buffer, buf_len, format, d);
549 locale_data = localeconv ();
550 decimal_point = locale_data->decimal_point;
551 decimal_point_len = strlen (decimal_point);
553 g_assert (decimal_point_len != 0);
555 if (decimal_point[0] != '.' ||
556 decimal_point[1] != 0)
560 if (*p == '+' || *p == '-')
563 while (isdigit ((guchar)*p))
566 if (strncmp (p, decimal_point, decimal_point_len) == 0)
570 if (decimal_point_len > 1) {
571 rest_len = strlen (p + (decimal_point_len-1));
572 memmove (p, p + (decimal_point_len-1),
585 * @nptr: the string to convert to a numeric value.
586 * @endptr: if non-%NULL, it returns the character after
587 * the last character used in the conversion.
588 * @base: to be used for the conversion, 2..36 or 0
590 * Converts a string to a #guint64 value.
591 * This function behaves like the standard strtoull() function
592 * does in the C locale. It does this without actually
593 * changing the current locale, since that would not be
596 * This function is typically used when reading configuration
597 * files or other non-user input that should be locale independent.
598 * To handle input from the user you should normally use the
599 * locale-sensitive system strtoull() function.
601 * If the correct value would cause overflow, %G_MAXUINT64
602 * is returned, and %ERANGE is stored in %errno.
604 * Return value: the #guint64 value.
609 g_ascii_strtoull (const gchar *nptr,
613 /* this code is based on on the strtol(3) code from GNU libc released under
614 * the GNU Lesser General Public License.
616 * Copyright (C) 1991,92,94,95,96,97,98,99,2000,01,02
617 * Free Software Foundation, Inc.
619 #define ISSPACE(c) ((c) == ' ' || (c) == '\f' || (c) == '\n' || \
620 (c) == '\r' || (c) == '\t' || (c) == '\v')
621 #define ISUPPER(c) ((c) >= 'A' && (c) <= 'Z')
622 #define ISLOWER(c) ((c) >= 'a' && (c) <= 'z')
623 #define ISALPHA(c) (ISUPPER (c) || ISLOWER (c))
624 #define TOUPPER(c) (ISLOWER (c) ? (c) - 'a' + 'A' : (c))
625 #define TOLOWER(c) (ISUPPER (c) ? (c) - 'A' + 'a' : (c))
626 gboolean negative, overflow;
630 const gchar *s, *save;
633 g_return_val_if_fail (nptr != NULL, 0);
635 if (base == 1 || base > 36)
643 /* Skip white space. */
649 /* Check for a sign. */
659 /* Recognize number prefix and if BASE is zero, figure it out ourselves. */
662 if ((base == 0 || base == 16) && TOUPPER (s[1]) == 'X')
673 /* Save the pointer so we can check later if anything happened. */
675 cutoff = G_MAXUINT64 / base;
676 cutlim = G_MAXUINT64 % base;
683 if (c >= '0' && c <= '9')
685 else if (ISALPHA (c))
686 c = TOUPPER (c) - 'A' + 10;
691 /* Check for overflow. */
692 if (ui64 > cutoff || (ui64 == cutoff && c > cutlim))
701 /* Check if anything actually happened. */
705 /* Store in ENDPTR the address of one character
706 past the last character we converted. */
708 *endptr = (gchar*) s;
716 /* Return the result of the appropriate sign. */
717 return negative ? -ui64 : ui64;
720 /* We must handle a special case here: the base is 0 or 16 and the
721 first two characters are '0' and 'x', but the rest are no
722 hexadecimal digits. This is no error case. We return 0 and
723 ENDPTR points to the `x`. */
726 if (save - nptr >= 2 && TOUPPER (save[-1]) == 'X'
728 *endptr = (gchar*) &save[-1];
730 /* There was no number to convert. */
731 *endptr = (gchar*) nptr;
737 G_CONST_RETURN gchar*
738 g_strerror (gint errnum)
740 static GStaticPrivate msg_private = G_STATIC_PRIVATE_INIT;
744 const char *msg_locale;
746 msg_locale = strerror (errnum);
747 if (g_get_charset (NULL))
751 gchar *msg_utf8 = g_locale_to_utf8 (msg_locale, -1, NULL, NULL, NULL);
754 /* Stick in the quark table so that we can return a static result
756 GQuark msg_quark = g_quark_from_string (msg_utf8);
759 return g_quark_to_string (msg_quark);
766 case E2BIG: return "argument list too long";
769 case EACCES: return "permission denied";
772 case EADDRINUSE: return "address already in use";
775 case EADDRNOTAVAIL: return "can't assign requested address";
778 case EADV: return "advertise error";
781 case EAFNOSUPPORT: return "address family not supported by protocol family";
784 case EAGAIN: return "try again";
787 case EALIGN: return "EALIGN";
790 case EALREADY: return "operation already in progress";
793 case EBADE: return "bad exchange descriptor";
796 case EBADF: return "bad file number";
799 case EBADFD: return "file descriptor in bad state";
802 case EBADMSG: return "not a data message";
805 case EBADR: return "bad request descriptor";
808 case EBADRPC: return "RPC structure is bad";
811 case EBADRQC: return "bad request code";
814 case EBADSLT: return "invalid slot";
817 case EBFONT: return "bad font file format";
820 case EBUSY: return "mount device busy";
823 case ECHILD: return "no children";
826 case ECHRNG: return "channel number out of range";
829 case ECOMM: return "communication error on send";
832 case ECONNABORTED: return "software caused connection abort";
835 case ECONNREFUSED: return "connection refused";
838 case ECONNRESET: return "connection reset by peer";
840 #if defined(EDEADLK) && (!defined(EWOULDBLOCK) || (EDEADLK != EWOULDBLOCK))
841 case EDEADLK: return "resource deadlock avoided";
844 case EDEADLOCK: return "resource deadlock avoided";
847 case EDESTADDRREQ: return "destination address required";
850 case EDIRTY: return "mounting a dirty fs w/o force";
853 case EDOM: return "math argument out of range";
856 case EDOTDOT: return "cross mount point";
859 case EDQUOT: return "disk quota exceeded";
862 case EDUPPKG: return "duplicate package name";
865 case EEXIST: return "file already exists";
868 case EFAULT: return "bad address in system call argument";
871 case EFBIG: return "file too large";
874 case EHOSTDOWN: return "host is down";
877 case EHOSTUNREACH: return "host is unreachable";
880 case EIDRM: return "identifier removed";
883 case EINIT: return "initialization error";
886 case EINPROGRESS: return "operation now in progress";
889 case EINTR: return "interrupted system call";
892 case EINVAL: return "invalid argument";
895 case EIO: return "I/O error";
898 case EISCONN: return "socket is already connected";
901 case EISDIR: return "is a directory";
904 case EISNAM: return "is a name file";
907 case ELBIN: return "ELBIN";
910 case EL2HLT: return "level 2 halted";
913 case EL2NSYNC: return "level 2 not synchronized";
916 case EL3HLT: return "level 3 halted";
919 case EL3RST: return "level 3 reset";
922 case ELIBACC: return "can not access a needed shared library";
925 case ELIBBAD: return "accessing a corrupted shared library";
928 case ELIBEXEC: return "can not exec a shared library directly";
931 case ELIBMAX: return "attempting to link in more shared libraries than system limit";
934 case ELIBSCN: return ".lib section in a.out corrupted";
937 case ELNRNG: return "link number out of range";
940 case ELOOP: return "too many levels of symbolic links";
943 case EMFILE: return "too many open files";
946 case EMLINK: return "too many links";
949 case EMSGSIZE: return "message too long";
952 case EMULTIHOP: return "multihop attempted";
955 case ENAMETOOLONG: return "file name too long";
958 case ENAVAIL: return "not available";
961 case ENET: return "ENET";
964 case ENETDOWN: return "network is down";
967 case ENETRESET: return "network dropped connection on reset";
970 case ENETUNREACH: return "network is unreachable";
973 case ENFILE: return "file table overflow";
976 case ENOANO: return "anode table overflow";
978 #if defined(ENOBUFS) && (!defined(ENOSR) || (ENOBUFS != ENOSR))
979 case ENOBUFS: return "no buffer space available";
982 case ENOCSI: return "no CSI structure available";
985 case ENODATA: return "no data available";
988 case ENODEV: return "no such device";
991 case ENOENT: return "no such file or directory";
994 case ENOEXEC: return "exec format error";
997 case ENOLCK: return "no locks available";
1000 case ENOLINK: return "link has be severed";
1003 case ENOMEM: return "not enough memory";
1006 case ENOMSG: return "no message of desired type";
1009 case ENONET: return "machine is not on the network";
1012 case ENOPKG: return "package not installed";
1015 case ENOPROTOOPT: return "bad proocol option";
1018 case ENOSPC: return "no space left on device";
1021 case ENOSR: return "out of stream resources";
1024 case ENOSTR: return "not a stream device";
1027 case ENOSYM: return "unresolved symbol name";
1030 case ENOSYS: return "function not implemented";
1033 case ENOTBLK: return "block device required";
1036 case ENOTCONN: return "socket is not connected";
1039 case ENOTDIR: return "not a directory";
1042 case ENOTEMPTY: return "directory not empty";
1045 case ENOTNAM: return "not a name file";
1048 case ENOTSOCK: return "socket operation on non-socket";
1051 case ENOTTY: return "inappropriate device for ioctl";
1054 case ENOTUNIQ: return "name not unique on network";
1057 case ENXIO: return "no such device or address";
1060 case EOPNOTSUPP: return "operation not supported on socket";
1063 case EPERM: return "not owner";
1066 case EPFNOSUPPORT: return "protocol family not supported";
1069 case EPIPE: return "broken pipe";
1072 case EPROCLIM: return "too many processes";
1075 case EPROCUNAVAIL: return "bad procedure for program";
1077 #ifdef EPROGMISMATCH
1078 case EPROGMISMATCH: return "program version wrong";
1081 case EPROGUNAVAIL: return "RPC program not available";
1084 case EPROTO: return "protocol error";
1086 #ifdef EPROTONOSUPPORT
1087 case EPROTONOSUPPORT: return "protocol not suppored";
1090 case EPROTOTYPE: return "protocol wrong type for socket";
1093 case ERANGE: return "math result unrepresentable";
1095 #if defined(EREFUSED) && (!defined(ECONNREFUSED) || (EREFUSED != ECONNREFUSED))
1096 case EREFUSED: return "EREFUSED";
1099 case EREMCHG: return "remote address changed";
1102 case EREMDEV: return "remote device";
1105 case EREMOTE: return "pathname hit remote file system";
1108 case EREMOTEIO: return "remote i/o error";
1110 #ifdef EREMOTERELEASE
1111 case EREMOTERELEASE: return "EREMOTERELEASE";
1114 case EROFS: return "read-only file system";
1117 case ERPCMISMATCH: return "RPC version is wrong";
1120 case ERREMOTE: return "object is remote";
1123 case ESHUTDOWN: return "can't send afer socket shutdown";
1125 #ifdef ESOCKTNOSUPPORT
1126 case ESOCKTNOSUPPORT: return "socket type not supported";
1129 case ESPIPE: return "invalid seek";
1132 case ESRCH: return "no such process";
1135 case ESRMNT: return "srmount error";
1138 case ESTALE: return "stale remote file handle";
1141 case ESUCCESS: return "Error 0";
1144 case ETIME: return "timer expired";
1147 case ETIMEDOUT: return "connection timed out";
1150 case ETOOMANYREFS: return "too many references: can't splice";
1153 case ETXTBSY: return "text file or pseudo-device busy";
1156 case EUCLEAN: return "structure needs cleaning";
1159 case EUNATCH: return "protocol driver not attached";
1162 case EUSERS: return "too many users";
1165 case EVERSION: return "version mismatch";
1167 #if defined(EWOULDBLOCK) && (!defined(EAGAIN) || (EWOULDBLOCK != EAGAIN))
1168 case EWOULDBLOCK: return "operation would block";
1171 case EXDEV: return "cross-domain link";
1174 case EXFULL: return "message tables full";
1177 #else /* NO_SYS_ERRLIST */
1178 extern int sys_nerr;
1179 extern char *sys_errlist[];
1181 if ((errnum > 0) && (errnum <= sys_nerr))
1182 return sys_errlist [errnum];
1183 #endif /* NO_SYS_ERRLIST */
1185 msg = g_static_private_get (&msg_private);
1188 msg = g_new (gchar, 64);
1189 g_static_private_set (&msg_private, msg, g_free);
1192 _g_sprintf (msg, "unknown error (%d)", errnum);
1197 G_CONST_RETURN gchar*
1198 g_strsignal (gint signum)
1200 static GStaticPrivate msg_private = G_STATIC_PRIVATE_INIT;
1203 #ifdef HAVE_STRSIGNAL
1204 const char *msg_locale;
1206 #if defined(G_OS_BEOS) || defined(G_WITH_CYGWIN)
1207 extern const char *strsignal(int);
1209 /* this is declared differently (const) in string.h on BeOS */
1210 extern char *strsignal (int sig);
1211 #endif /* !G_OS_BEOS && !G_WITH_CYGWIN */
1212 msg_locale = strsignal (signum);
1213 if (g_get_charset (NULL))
1217 gchar *msg_utf8 = g_locale_to_utf8 (msg_locale, -1, NULL, NULL, NULL);
1220 /* Stick in the quark table so that we can return a static result
1222 GQuark msg_quark = g_quark_from_string (msg_utf8);
1225 return g_quark_to_string (msg_quark);
1228 #elif NO_SYS_SIGLIST
1232 case SIGHUP: return "Hangup";
1235 case SIGINT: return "Interrupt";
1238 case SIGQUIT: return "Quit";
1241 case SIGILL: return "Illegal instruction";
1244 case SIGTRAP: return "Trace/breakpoint trap";
1247 case SIGABRT: return "IOT trap/Abort";
1250 case SIGBUS: return "Bus error";
1253 case SIGFPE: return "Floating point exception";
1256 case SIGKILL: return "Killed";
1259 case SIGUSR1: return "User defined signal 1";
1262 case SIGSEGV: return "Segmentation fault";
1265 case SIGUSR2: return "User defined signal 2";
1268 case SIGPIPE: return "Broken pipe";
1271 case SIGALRM: return "Alarm clock";
1274 case SIGTERM: return "Terminated";
1277 case SIGSTKFLT: return "Stack fault";
1280 case SIGCHLD: return "Child exited";
1283 case SIGCONT: return "Continued";
1286 case SIGSTOP: return "Stopped (signal)";
1289 case SIGTSTP: return "Stopped";
1292 case SIGTTIN: return "Stopped (tty input)";
1295 case SIGTTOU: return "Stopped (tty output)";
1298 case SIGURG: return "Urgent condition";
1301 case SIGXCPU: return "CPU time limit exceeded";
1304 case SIGXFSZ: return "File size limit exceeded";
1307 case SIGVTALRM: return "Virtual time alarm";
1310 case SIGPROF: return "Profile signal";
1313 case SIGWINCH: return "Window size changed";
1316 case SIGIO: return "Possible I/O";
1319 case SIGPWR: return "Power failure";
1322 case SIGUNUSED: return "Unused signal";
1325 #else /* NO_SYS_SIGLIST */
1327 #ifdef NO_SYS_SIGLIST_DECL
1328 extern char *sys_siglist[]; /*(see Tue Jan 19 00:44:24 1999 in changelog)*/
1331 return (char*) /* this function should return const --josh */ sys_siglist [signum];
1332 #endif /* NO_SYS_SIGLIST */
1334 msg = g_static_private_get (&msg_private);
1337 msg = g_new (gchar, 64);
1338 g_static_private_set (&msg_private, msg, g_free);
1341 _g_sprintf (msg, "unknown signal (%d)", signum);
1346 /* Functions g_strlcpy and g_strlcat were originally developed by
1347 * Todd C. Miller <Todd.Miller@courtesan.com> to simplify writing secure code.
1348 * See ftp://ftp.openbsd.org/pub/OpenBSD/src/lib/libc/string/strlcpy.3
1349 * for more information.
1353 /* Use the native ones, if available; they might be implemented in assembly */
1355 g_strlcpy (gchar *dest,
1359 g_return_val_if_fail (dest != NULL, 0);
1360 g_return_val_if_fail (src != NULL, 0);
1362 return strlcpy (dest, src, dest_size);
1366 g_strlcat (gchar *dest,
1370 g_return_val_if_fail (dest != NULL, 0);
1371 g_return_val_if_fail (src != NULL, 0);
1373 return strlcat (dest, src, dest_size);
1376 #else /* ! HAVE_STRLCPY */
1379 * Copy string src to buffer dest (of buffer size dest_size). At most
1380 * dest_size-1 characters will be copied. Always NUL terminates
1381 * (unless dest_size == 0). This function does NOT allocate memory.
1382 * Unlike strncpy, this function doesn't pad dest (so it's often faster).
1383 * Returns size of attempted result, strlen(src),
1384 * so if retval >= dest_size, truncation occurred.
1387 g_strlcpy (gchar *dest,
1391 register gchar *d = dest;
1392 register const gchar *s = src;
1393 register gsize n = dest_size;
1395 g_return_val_if_fail (dest != NULL, 0);
1396 g_return_val_if_fail (src != NULL, 0);
1398 /* Copy as many bytes as will fit */
1399 if (n != 0 && --n != 0)
1402 register gchar c = *s++;
1410 /* If not enough room in dest, add NUL and traverse rest of src */
1419 return s - src - 1; /* count does not include NUL */
1424 * Appends string src to buffer dest (of buffer size dest_size).
1425 * At most dest_size-1 characters will be copied.
1426 * Unlike strncat, dest_size is the full size of dest, not the space left over.
1427 * This function does NOT allocate memory.
1428 * This always NUL terminates (unless siz == 0 or there were no NUL characters
1429 * in the dest_size characters of dest to start with).
1430 * Returns size of attempted result, which is
1431 * MIN (dest_size, strlen (original dest)) + strlen (src),
1432 * so if retval >= dest_size, truncation occurred.
1435 g_strlcat (gchar *dest,
1439 register gchar *d = dest;
1440 register const gchar *s = src;
1441 register gsize bytes_left = dest_size;
1442 gsize dlength; /* Logically, MIN (strlen (d), dest_size) */
1444 g_return_val_if_fail (dest != NULL, 0);
1445 g_return_val_if_fail (src != NULL, 0);
1447 /* Find the end of dst and adjust bytes left but don't go past end */
1448 while (*d != 0 && bytes_left-- != 0)
1451 bytes_left = dest_size - dlength;
1453 if (bytes_left == 0)
1454 return dlength + strlen (s);
1458 if (bytes_left != 1)
1467 return dlength + (s - src); /* count does not include NUL */
1469 #endif /* ! HAVE_STRLCPY */
1474 * @len: length of @str in bytes, or -1 if @str is nul-terminated.
1476 * Converts all upper case ASCII letters to lower case ASCII letters.
1478 * Return value: a newly-allocated string, with all the upper case
1479 * characters in @str converted to lower case, with
1480 * semantics that exactly match g_ascii_tolower(). (Note
1481 * that this is unlike the old g_strdown(), which modified
1482 * the string in place.)
1485 g_ascii_strdown (const gchar *str,
1490 g_return_val_if_fail (str != NULL, NULL);
1495 result = g_strndup (str, len);
1496 for (s = result; *s; s++)
1497 *s = g_ascii_tolower (*s);
1505 * @len: length of @str in bytes, or -1 if @str is nul-terminated.
1507 * Converts all lower case ASCII letters to upper case ASCII letters.
1509 * Return value: a newly allocated string, with all the lower case
1510 * characters in @str converted to upper case, with
1511 * semantics that exactly match g_ascii_toupper(). (Note
1512 * that this is unlike the old g_strup(), which modified
1513 * the string in place.)
1516 g_ascii_strup (const gchar *str,
1521 g_return_val_if_fail (str != NULL, NULL);
1526 result = g_strndup (str, len);
1527 for (s = result; *s; s++)
1528 *s = g_ascii_toupper (*s);
1535 * @string: the string to convert.
1537 * Converts a string to lower case.
1539 * Return value: the string
1541 * Deprecated: This function is totally broken for the reasons discussed in
1542 * the g_strncasecmp() docs - use g_ascii_strdown() or g_utf8_strdown()
1546 g_strdown (gchar *string)
1550 g_return_val_if_fail (string != NULL, NULL);
1552 s = (guchar *) string;
1561 return (gchar *) string;
1566 * @string: the string to convert.
1568 * Converts a string to upper case.
1570 * Return value: the string
1572 * Deprecated: This function is totally broken for the reasons discussed in
1573 * the g_strncasecmp() docs - use g_ascii_strup() or g_utf8_strup() instead.
1576 g_strup (gchar *string)
1580 g_return_val_if_fail (string != NULL, NULL);
1582 s = (guchar *) string;
1591 return (gchar *) string;
1595 g_strreverse (gchar *string)
1597 g_return_val_if_fail (string != NULL, NULL);
1601 register gchar *h, *t;
1604 t = string + strlen (string) - 1;
1623 * @c: any character.
1625 * Convert a character to ASCII lower case.
1627 * Unlike the standard C library tolower() function, this only
1628 * recognizes standard ASCII letters and ignores the locale, returning
1629 * all non-ASCII characters unchanged, even if they are lower case
1630 * letters in a particular character set. Also unlike the standard
1631 * library function, this takes and returns a char, not an int, so
1632 * don't call it on %EOF but no need to worry about casting to #guchar
1633 * before passing a possibly non-ASCII character in.
1635 * Return value: the result of converting @c to lower case.
1636 * If @c is not an ASCII upper case letter,
1637 * @c is returned unchanged.
1640 g_ascii_tolower (gchar c)
1642 return g_ascii_isupper (c) ? c - 'A' + 'a' : c;
1647 * @c: any character.
1649 * Convert a character to ASCII upper case.
1651 * Unlike the standard C library toupper() function, this only
1652 * recognizes standard ASCII letters and ignores the locale, returning
1653 * all non-ASCII characters unchanged, even if they are upper case
1654 * letters in a particular character set. Also unlike the standard
1655 * library function, this takes and returns a char, not an int, so
1656 * don't call it on %EOF but no need to worry about casting to #guchar
1657 * before passing a possibly non-ASCII character in.
1659 * Return value: the result of converting @c to upper case.
1660 * If @c is not an ASCII lower case letter,
1661 * @c is returned unchanged.
1664 g_ascii_toupper (gchar c)
1666 return g_ascii_islower (c) ? c - 'a' + 'A' : c;
1670 * g_ascii_digit_value:
1671 * @c: an ASCII character.
1673 * Determines the numeric value of a character as a decimal
1674 * digit. Differs from g_unichar_digit_value() because it takes
1675 * a char, so there's no worry about sign extension if characters
1678 * Return value: If @c is a decimal digit (according to
1679 * g_ascii_isdigit()), its numeric value. Otherwise, -1.
1682 g_ascii_digit_value (gchar c)
1684 if (g_ascii_isdigit (c))
1690 * g_ascii_xdigit_value:
1691 * @c: an ASCII character.
1693 * Determines the numeric value of a character as a hexidecimal
1694 * digit. Differs from g_unichar_xdigit_value() because it takes
1695 * a char, so there's no worry about sign extension if characters
1698 * Return value: If @c is a hex digit (according to
1699 * g_ascii_isxdigit()), its numeric value. Otherwise, -1.
1702 g_ascii_xdigit_value (gchar c)
1704 if (c >= 'A' && c <= 'F')
1705 return c - 'A' + 10;
1706 if (c >= 'a' && c <= 'f')
1707 return c - 'a' + 10;
1708 return g_ascii_digit_value (c);
1712 * g_ascii_strcasecmp:
1713 * @s1: string to compare with @s2.
1714 * @s2: string to compare with @s1.
1716 * Compare two strings, ignoring the case of ASCII characters.
1718 * Unlike the BSD strcasecmp() function, this only recognizes standard
1719 * ASCII letters and ignores the locale, treating all non-ASCII
1720 * characters as if they are not letters.
1722 * Return value: an integer less than, equal to, or greater than
1723 * zero if @s1 is found, respectively, to be less than,
1724 * to match, or to be greater than @s2.
1727 g_ascii_strcasecmp (const gchar *s1,
1732 g_return_val_if_fail (s1 != NULL, 0);
1733 g_return_val_if_fail (s2 != NULL, 0);
1737 c1 = (gint)(guchar) g_ascii_tolower (*s1);
1738 c2 = (gint)(guchar) g_ascii_tolower (*s2);
1744 return (((gint)(guchar) *s1) - ((gint)(guchar) *s2));
1748 * g_ascii_strncasecmp:
1749 * @s1: string to compare with @s2.
1750 * @s2: string to compare with @s1.
1751 * @n: number of characters to compare.
1753 * Compare @s1 and @s2, ignoring the case of ASCII characters and any
1754 * characters after the first @n in each string.
1756 * Unlike the BSD strcasecmp() function, this only recognizes standard
1757 * ASCII letters and ignores the locale, treating all non-ASCII
1758 * characters as if they are not letters.
1760 * Return value: an integer less than, equal to, or greater than zero
1761 * if the first @n bytes of @s1 is found, respectively,
1762 * to be less than, to match, or to be greater than the
1763 * first @n bytes of @s2.
1766 g_ascii_strncasecmp (const gchar *s1,
1772 g_return_val_if_fail (s1 != NULL, 0);
1773 g_return_val_if_fail (s2 != NULL, 0);
1775 while (n && *s1 && *s2)
1778 c1 = (gint)(guchar) g_ascii_tolower (*s1);
1779 c2 = (gint)(guchar) g_ascii_tolower (*s2);
1786 return (((gint) (guchar) *s1) - ((gint) (guchar) *s2));
1794 * @s2: a string to compare with @s1.
1796 * A case-insensitive string comparison, corresponding to the standard
1797 * strcasecmp() function on platforms which support it.
1799 * Return value: 0 if the strings match, a negative value if @s1 < @s2,
1800 * or a positive value if @s1 > @s2.
1802 * Deprecated: See g_strncasecmp() for a discussion of why this function is
1803 * deprecated and how to replace it.
1806 g_strcasecmp (const gchar *s1,
1809 #ifdef HAVE_STRCASECMP
1810 g_return_val_if_fail (s1 != NULL, 0);
1811 g_return_val_if_fail (s2 != NULL, 0);
1813 return strcasecmp (s1, s2);
1817 g_return_val_if_fail (s1 != NULL, 0);
1818 g_return_val_if_fail (s2 != NULL, 0);
1822 /* According to A. Cox, some platforms have islower's that
1823 * don't work right on non-uppercase
1825 c1 = isupper ((guchar)*s1) ? tolower ((guchar)*s1) : *s1;
1826 c2 = isupper ((guchar)*s2) ? tolower ((guchar)*s2) : *s2;
1832 return (((gint)(guchar) *s1) - ((gint)(guchar) *s2));
1839 * @s2: a string to compare with @s1.
1840 * @n: the maximum number of characters to compare.
1842 * A case-insensitive string comparison, corresponding to the standard
1843 * strncasecmp() function on platforms which support it.
1844 * It is similar to g_strcasecmp() except it only compares the first @n
1845 * characters of the strings.
1847 * Return value: 0 if the strings match, a negative value if @s1 < @s2,
1848 * or a positive value if @s1 > @s2.
1850 * Deprecated: The problem with g_strncasecmp() is that it does the
1851 * comparison by calling toupper()/tolower(). These functions are
1852 * locale-specific and operate on single bytes. However, it is impossible
1853 * to handle things correctly from an I18N standpoint by operating on
1854 * bytes, since characters may be multibyte. Thus g_strncasecmp() is
1855 * broken if your string is guaranteed to be ASCII, since it's
1856 * locale-sensitive, and it's broken if your string is localized, since
1857 * it doesn't work on many encodings at all, including UTF-8, EUC-JP,
1860 * There are therefore two replacement functions: g_ascii_strncasecmp(),
1861 * which only works on ASCII and is not locale-sensitive, and
1862 * g_utf8_casefold(), which is good for case-insensitive sorting of UTF-8.
1865 g_strncasecmp (const gchar *s1,
1869 #ifdef HAVE_STRNCASECMP
1870 return strncasecmp (s1, s2, n);
1874 g_return_val_if_fail (s1 != NULL, 0);
1875 g_return_val_if_fail (s2 != NULL, 0);
1877 while (n && *s1 && *s2)
1880 /* According to A. Cox, some platforms have islower's that
1881 * don't work right on non-uppercase
1883 c1 = isupper ((guchar)*s1) ? tolower ((guchar)*s1) : *s1;
1884 c2 = isupper ((guchar)*s2) ? tolower ((guchar)*s2) : *s2;
1891 return (((gint) (guchar) *s1) - ((gint) (guchar) *s2));
1898 g_strdelimit (gchar *string,
1899 const gchar *delimiters,
1904 g_return_val_if_fail (string != NULL, NULL);
1907 delimiters = G_STR_DELIMITERS;
1909 for (c = string; *c; c++)
1911 if (strchr (delimiters, *c))
1919 g_strcanon (gchar *string,
1920 const gchar *valid_chars,
1925 g_return_val_if_fail (string != NULL, NULL);
1926 g_return_val_if_fail (valid_chars != NULL, NULL);
1928 for (c = string; *c; c++)
1930 if (!strchr (valid_chars, *c))
1938 g_strcompress (const gchar *source)
1940 const gchar *p = source, *octal;
1941 gchar *dest = g_malloc (strlen (source) + 1);
1951 case '0': case '1': case '2': case '3': case '4':
1952 case '5': case '6': case '7':
1955 while ((p < octal + 3) && (*p >= '0') && (*p <= '7'))
1957 *q = (*q * 8) + (*p - '0');
1978 default: /* Also handles \" and \\ */
1993 g_strescape (const gchar *source,
1994 const gchar *exceptions)
2001 g_return_val_if_fail (source != NULL, NULL);
2003 p = (guchar *) source;
2004 /* Each source byte needs maximally four destination chars (\777) */
2005 q = dest = g_malloc (strlen (source) * 4 + 1);
2007 memset (excmap, 0, 256);
2010 guchar *e = (guchar *) exceptions;
2056 if ((*p < ' ') || (*p >= 0177))
2059 *q++ = '0' + (((*p) >> 6) & 07);
2060 *q++ = '0' + (((*p) >> 3) & 07);
2061 *q++ = '0' + ((*p) & 07);
2075 g_strchug (gchar *string)
2079 g_return_val_if_fail (string != NULL, NULL);
2081 for (start = (guchar*) string; *start && g_ascii_isspace (*start); start++)
2084 g_memmove (string, start, strlen ((gchar *) start) + 1);
2090 g_strchomp (gchar *string)
2094 g_return_val_if_fail (string != NULL, NULL);
2096 len = strlen (string);
2099 if (g_ascii_isspace ((guchar) string[len]))
2110 * @string: a string to split.
2111 * @delimiter: a string which specifies the places at which to split the string.
2112 * The delimiter is not included in any of the resulting strings, unless
2113 * @max_tokens is reached.
2114 * @max_tokens: the maximum number of pieces to split @string into. If this is
2115 * less than 1, the string is split completely.
2117 * Splits a string into a maximum of @max_tokens pieces, using the given
2118 * @delimiter. If @max_tokens is reached, the remainder of @string is appended
2119 * to the last token.
2121 * As a special case, the result of splitting the empty string "" is an empty
2122 * vector, not a vector containing a single string. The reason for this
2123 * special case is that being able to represent a empty vector is typically
2124 * more useful than consistent handling of empty elements. If you do need
2125 * to represent empty elements, you'll need to check for the empty string
2126 * before calling g_strsplit().
2128 * Return value: a newly-allocated %NULL-terminated array of strings. Use
2129 * g_strfreev() to free it.
2132 g_strsplit (const gchar *string,
2133 const gchar *delimiter,
2136 GSList *string_list = NULL, *slist;
2137 gchar **str_array, *s;
2139 const gchar *remainder;
2141 g_return_val_if_fail (string != NULL, NULL);
2142 g_return_val_if_fail (delimiter != NULL, NULL);
2143 g_return_val_if_fail (delimiter[0] != '\0', NULL);
2146 max_tokens = G_MAXINT;
2149 s = strstr (remainder, delimiter);
2152 gsize delimiter_len = strlen (delimiter);
2154 while (--max_tokens && s)
2159 len = s - remainder;
2160 new_string = g_new (gchar, len + 1);
2161 strncpy (new_string, remainder, len);
2162 new_string[len] = 0;
2163 string_list = g_slist_prepend (string_list, new_string);
2165 remainder = s + delimiter_len;
2166 s = strstr (remainder, delimiter);
2172 string_list = g_slist_prepend (string_list, g_strdup (remainder));
2175 str_array = g_new (gchar*, n + 1);
2177 str_array[n--] = NULL;
2178 for (slist = string_list; slist; slist = slist->next)
2179 str_array[n--] = slist->data;
2181 g_slist_free (string_list);
2187 g_strfreev (gchar **str_array)
2193 for(i = 0; str_array[i] != NULL; i++)
2194 g_free(str_array[i]);
2202 * @str_array: %NULL-terminated array of strings.
2204 * Copies %NULL-terminated array of strings. The copy is a deep copy;
2205 * the new array should be freed by first freeing each string, then
2206 * the array itself. g_strfreev() does this for you. If called
2207 * on a %NULL value, g_strdupv() simply returns %NULL.
2209 * Return value: a new %NULL-terminated array of strings.
2212 g_strdupv (gchar **str_array)
2220 while (str_array[i])
2223 retval = g_new (gchar*, i + 1);
2226 while (str_array[i])
2228 retval[i] = g_strdup (str_array[i]);
2240 g_strjoinv (const gchar *separator,
2246 g_return_val_if_fail (str_array != NULL, NULL);
2248 if (separator == NULL)
2255 gsize separator_len;
2257 separator_len = strlen (separator);
2258 /* First part, getting length */
2259 len = 1 + strlen (str_array[0]);
2260 for (i = 1; str_array[i] != NULL; i++)
2261 len += strlen (str_array[i]);
2262 len += separator_len * (i - 1);
2264 /* Second part, building string */
2265 string = g_new (gchar, len);
2266 ptr = g_stpcpy (string, *str_array);
2267 for (i = 1; str_array[i] != NULL; i++)
2269 ptr = g_stpcpy (ptr, separator);
2270 ptr = g_stpcpy (ptr, str_array[i]);
2274 string = g_strdup ("");
2280 g_strjoin (const gchar *separator,
2286 gsize separator_len;
2289 if (separator == NULL)
2292 separator_len = strlen (separator);
2294 va_start (args, separator);
2296 s = va_arg (args, gchar*);
2300 /* First part, getting length */
2301 len = 1 + strlen (s);
2303 s = va_arg (args, gchar*);
2306 len += separator_len + strlen (s);
2307 s = va_arg (args, gchar*);
2311 /* Second part, building string */
2312 string = g_new (gchar, len);
2314 va_start (args, separator);
2316 s = va_arg (args, gchar*);
2317 ptr = g_stpcpy (string, s);
2319 s = va_arg (args, gchar*);
2322 ptr = g_stpcpy (ptr, separator);
2323 ptr = g_stpcpy (ptr, s);
2324 s = va_arg (args, gchar*);
2328 string = g_strdup ("");
2338 * @haystack: a string.
2339 * @haystack_len: the maximum length of @haystack.
2340 * @needle: the string to search for.
2342 * Searches the string @haystack for the first occurrence
2343 * of the string @needle, limiting the length of the search
2346 * Return value: a pointer to the found occurrence, or
2347 * %NULL if not found.
2350 g_strstr_len (const gchar *haystack,
2351 gssize haystack_len,
2352 const gchar *needle)
2354 g_return_val_if_fail (haystack != NULL, NULL);
2355 g_return_val_if_fail (needle != NULL, NULL);
2357 if (haystack_len < 0)
2358 return strstr (haystack, needle);
2361 const gchar *p = haystack;
2362 gsize needle_len = strlen (needle);
2366 if (needle_len == 0)
2367 return (gchar *)haystack;
2369 if (haystack_len < needle_len)
2372 end = haystack + haystack_len - needle_len;
2374 while (*p && p <= end)
2376 for (i = 0; i < needle_len; i++)
2377 if (p[i] != needle[i])
2392 * @haystack: a nul-terminated string.
2393 * @needle: the nul-terminated string to search for.
2395 * Searches the string @haystack for the last occurrence
2396 * of the string @needle.
2398 * Return value: a pointer to the found occurrence, or
2399 * %NULL if not found.
2402 g_strrstr (const gchar *haystack,
2403 const gchar *needle)
2410 g_return_val_if_fail (haystack != NULL, NULL);
2411 g_return_val_if_fail (needle != NULL, NULL);
2413 needle_len = strlen (needle);
2414 haystack_len = strlen (haystack);
2416 if (needle_len == 0)
2417 return (gchar *)haystack;
2419 if (haystack_len < needle_len)
2422 p = haystack + haystack_len - needle_len;
2424 while (p >= haystack)
2426 for (i = 0; i < needle_len; i++)
2427 if (p[i] != needle[i])
2441 * @haystack: a nul-terminated string.
2442 * @haystack_len: the maximum length of @haystack.
2443 * @needle: the nul-terminated string to search for.
2445 * Searches the string @haystack for the last occurrence
2446 * of the string @needle, limiting the length of the search
2449 * Return value: a pointer to the found occurrence, or
2450 * %NULL if not found.
2453 g_strrstr_len (const gchar *haystack,
2454 gssize haystack_len,
2455 const gchar *needle)
2457 g_return_val_if_fail (haystack != NULL, NULL);
2458 g_return_val_if_fail (needle != NULL, NULL);
2460 if (haystack_len < 0)
2461 return g_strrstr (haystack, needle);
2464 gsize needle_len = strlen (needle);
2465 const gchar *haystack_max = haystack + haystack_len;
2466 const gchar *p = haystack;
2469 while (p < haystack_max && *p)
2472 if (p < haystack + needle_len)
2477 while (p >= haystack)
2479 for (i = 0; i < needle_len; i++)
2480 if (p[i] != needle[i])
2496 * @str: a nul-terminated string.
2497 * @suffix: the nul-terminated suffix to look for.
2499 * Looks whether the string @str ends with @suffix.
2501 * Return value: %TRUE if @str end with @suffix, %FALSE otherwise.
2506 g_str_has_suffix (const gchar *str,
2507 const gchar *suffix)
2512 g_return_val_if_fail (str != NULL, FALSE);
2513 g_return_val_if_fail (suffix != NULL, FALSE);
2515 str_len = strlen (str);
2516 suffix_len = strlen (suffix);
2518 if (str_len < suffix_len)
2521 return strcmp (str + str_len - suffix_len, suffix) == 0;
2526 * @str: a nul-terminated string.
2527 * @prefix: the nul-terminated prefix to look for.
2529 * Looks whether the string @str begins with @prefix.
2531 * Return value: %TRUE if @str begins with @prefix, %FALSE otherwise.
2536 g_str_has_prefix (const gchar *str,
2537 const gchar *prefix)
2542 g_return_val_if_fail (str != NULL, FALSE);
2543 g_return_val_if_fail (prefix != NULL, FALSE);
2545 str_len = strlen (str);
2546 prefix_len = strlen (prefix);
2548 if (str_len < prefix_len)
2551 return strncmp (str, prefix, prefix_len) == 0;