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/.
35 #define _GNU_SOURCE /* For stpcpy */
43 #include <ctype.h> /* For tolower() */
44 #if !defined (HAVE_STRSIGNAL) || !defined(NO_SYS_SIGLIST_DECL)
48 #include "gprintfint.h"
54 /* do not include <unistd.h> in this place since it
55 * inteferes with g_strsignal() on some OSes
58 static const guint16 ascii_table_data[256] = {
59 0x004, 0x004, 0x004, 0x004, 0x004, 0x004, 0x004, 0x004,
60 0x004, 0x104, 0x104, 0x004, 0x104, 0x104, 0x004, 0x004,
61 0x004, 0x004, 0x004, 0x004, 0x004, 0x004, 0x004, 0x004,
62 0x004, 0x004, 0x004, 0x004, 0x004, 0x004, 0x004, 0x004,
63 0x140, 0x0d0, 0x0d0, 0x0d0, 0x0d0, 0x0d0, 0x0d0, 0x0d0,
64 0x0d0, 0x0d0, 0x0d0, 0x0d0, 0x0d0, 0x0d0, 0x0d0, 0x0d0,
65 0x459, 0x459, 0x459, 0x459, 0x459, 0x459, 0x459, 0x459,
66 0x459, 0x459, 0x0d0, 0x0d0, 0x0d0, 0x0d0, 0x0d0, 0x0d0,
67 0x0d0, 0x653, 0x653, 0x653, 0x653, 0x653, 0x653, 0x253,
68 0x253, 0x253, 0x253, 0x253, 0x253, 0x253, 0x253, 0x253,
69 0x253, 0x253, 0x253, 0x253, 0x253, 0x253, 0x253, 0x253,
70 0x253, 0x253, 0x253, 0x0d0, 0x0d0, 0x0d0, 0x0d0, 0x0d0,
71 0x0d0, 0x473, 0x473, 0x473, 0x473, 0x473, 0x473, 0x073,
72 0x073, 0x073, 0x073, 0x073, 0x073, 0x073, 0x073, 0x073,
73 0x073, 0x073, 0x073, 0x073, 0x073, 0x073, 0x073, 0x073,
74 0x073, 0x073, 0x073, 0x0d0, 0x0d0, 0x0d0, 0x0d0, 0x004
75 /* the upper 128 are all zeroes */
78 #if defined(G_PLATFORM_WIN32) && defined(__GNUC__)
81 const guint16 * const g_ascii_table = ascii_table_data;
84 g_strdup (const gchar *str)
90 new_str = g_new (char, strlen (str) + 1);
91 strcpy (new_str, str);
100 g_memdup (gconstpointer mem,
107 new_mem = g_malloc (byte_size);
108 memcpy (new_mem, mem, byte_size);
117 g_strndup (const gchar *str,
124 new_str = g_new (gchar, n + 1);
125 strncpy (new_str, str, n);
135 g_strnfill (gsize length,
140 str = g_new (gchar, length + 1);
141 memset (str, (guchar)fill_char, length);
149 * @dest: destination buffer.
150 * @src: source string.
152 * Copies a nul-terminated string into the dest buffer, include the
153 * trailing nul, and return a pointer to the trailing nul byte.
154 * This is useful for concatenating multiple strings together
155 * without having to repeatedly scan for the end.
157 * Return value: a pointer to trailing nul byte.
160 g_stpcpy (gchar *dest,
164 g_return_val_if_fail (dest != NULL, NULL);
165 g_return_val_if_fail (src != NULL, NULL);
166 return stpcpy (dest, src);
168 register gchar *d = dest;
169 register const gchar *s = src;
171 g_return_val_if_fail (dest != NULL, NULL);
172 g_return_val_if_fail (src != NULL, NULL);
175 while (*s++ != '\0');
182 g_strdup_vprintf (const gchar *format,
186 #ifdef HAVE_VASPRINTF
187 if (_g_vasprintf (&buffer, format, args1) < 0)
189 else if (!g_mem_is_system_malloc ())
191 gchar *buffer1 = g_strdup (buffer);
198 G_VA_COPY (args2, args1);
200 buffer = g_new (gchar, g_printf_string_upper_bound (format, args1));
202 _g_vsprintf (buffer, format, args2);
209 g_strdup_printf (const gchar *format,
215 va_start (args, format);
216 buffer = g_strdup_vprintf (format, args);
223 g_strconcat (const gchar *string1, ...)
231 g_return_val_if_fail (string1 != NULL, NULL);
233 l = 1 + strlen (string1);
234 va_start (args, string1);
235 s = va_arg (args, gchar*);
239 s = va_arg (args, gchar*);
243 concat = g_new (gchar, l);
246 ptr = g_stpcpy (ptr, string1);
247 va_start (args, string1);
248 s = va_arg (args, gchar*);
251 ptr = g_stpcpy (ptr, s);
252 s = va_arg (args, gchar*);
261 * @nptr: the string to convert to a numeric value.
262 * @endptr: if non-%NULL, it returns the character after
263 * the last character used in the conversion.
265 * Converts a string to a #gdouble value.
266 * It calls the standard strtod() function to handle the conversion, but
267 * if the string is not completely converted it attempts the conversion
268 * again with g_ascii_strtod(), and returns the best match.
270 * This function should seldomly be used. The normal situation when reading
271 * numbers not for human consumption is to use g_ascii_strtod(). Only when
272 * you know that you must expect both locale formatted and C formatted numbers
273 * should you use this. Make sure that you don't pass strings such as comma
274 * separated lists of values, since the commas may be interpreted as a decimal
275 * point in some locales, causing unexpected results.
277 * Return value: the #gdouble value.
280 g_strtod (const gchar *nptr,
288 g_return_val_if_fail (nptr != NULL, 0);
293 val_1 = strtod (nptr, &fail_pos_1);
295 if (fail_pos_1 && fail_pos_1[0] != 0)
296 val_2 = g_ascii_strtod (nptr, &fail_pos_2);
298 if (!fail_pos_1 || fail_pos_1[0] == 0 || fail_pos_1 >= fail_pos_2)
301 *endptr = fail_pos_1;
307 *endptr = fail_pos_2;
314 * @nptr: the string to convert to a numeric value.
315 * @endptr: if non-%NULL, it returns the character after
316 * the last character used in the conversion.
318 * Converts a string to a #gdouble value.
319 * This function behaves like the standard strtod() function
320 * does in the C locale. It does this without actually
321 * changing the current locale, since that would not be
324 * This function is typically used when reading configuration
325 * files or other non-user input that should be locale independent.
326 * To handle input from the user you should normally use the
327 * locale-sensitive system strtod() function.
329 * To convert from a string to #gdouble in a locale-insensitive
330 * way, use g_ascii_dtostr().
332 * If the correct value would cause overflow, plus or minus %HUGE_VAL
333 * is returned (according to the sign of the value), and %ERANGE is
334 * stored in %errno. If the correct value would cause underflow,
335 * zero is returned and %ERANGE is stored in %errno.
337 * This function resets %errno before calling strtod() so that
338 * you can reliably detect overflow and underflow.
340 * Return value: the #gdouble value.
343 g_ascii_strtod (const gchar *nptr,
348 struct lconv *locale_data;
349 const char *decimal_point;
350 int decimal_point_len;
351 const char *p, *decimal_point_pos;
352 const char *end = NULL; /* Silence gcc */
354 g_return_val_if_fail (nptr != NULL, 0);
358 locale_data = localeconv ();
359 decimal_point = locale_data->decimal_point;
360 decimal_point_len = strlen (decimal_point);
362 g_assert (decimal_point_len != 0);
364 decimal_point_pos = NULL;
365 if (decimal_point[0] != '.' ||
366 decimal_point[1] != 0)
369 /* Skip leading space */
370 while (g_ascii_isspace (*p))
373 /* Skip leading optional sign */
374 if (*p == '+' || *p == '-')
378 (p[1] == 'x' || p[1] == 'X'))
381 /* HEX - find the (optional) decimal point */
383 while (g_ascii_isxdigit (*p))
388 decimal_point_pos = p++;
390 while (g_ascii_isxdigit (*p))
393 if (*p == 'p' || *p == 'P')
395 if (*p == '+' || *p == '-')
397 while (g_ascii_isdigit (*p))
404 while (g_ascii_isdigit (*p))
409 decimal_point_pos = p++;
411 while (g_ascii_isdigit (*p))
414 if (*p == 'e' || *p == 'E')
416 if (*p == '+' || *p == '-')
418 while (g_ascii_isdigit (*p))
423 /* For the other cases, we need not convert the decimal point */
426 /* Set errno to zero, so that we can distinguish zero results
430 if (decimal_point_pos)
434 /* We need to convert the '.' to the locale specific decimal point */
435 copy = g_malloc (end - nptr + 1 + decimal_point_len);
438 memcpy (c, nptr, decimal_point_pos - nptr);
439 c += decimal_point_pos - nptr;
440 memcpy (c, decimal_point, decimal_point_len);
441 c += decimal_point_len;
442 memcpy (c, decimal_point_pos + 1, end - (decimal_point_pos + 1));
443 c += end - (decimal_point_pos + 1);
446 val = strtod (copy, &fail_pos);
450 if (fail_pos > decimal_point_pos)
451 fail_pos = (char *)nptr + (fail_pos - copy) - (decimal_point_len - 1);
453 fail_pos = (char *)nptr + (fail_pos - copy);
460 val = strtod (nptr, &fail_pos);
471 * @buffer: A buffer to place the resulting string in
472 * @buf_len: The length of the buffer.
473 * @d: The #gdouble to convert
475 * Converts a #gdouble to a string, using the '.' as
478 * This functions generates enough precision that converting
479 * the string back using g_strtod() gives the same machine-number
480 * (on machines with IEEE compatible 64bit doubles). It is
481 * guaranteed that the size of the resulting string will never
482 * be larger than @G_ASCII_DTOSTR_BUF_SIZE bytes.
484 * Return value: The pointer to the buffer with the converted string.
487 g_ascii_dtostr (gchar *buffer,
491 return g_ascii_formatd (buffer, buf_len, "%.17g", d);
496 * @buffer: A buffer to place the resulting string in
497 * @buf_len: The length of the buffer.
498 * @format: The printf-style format to use for the
499 * code to use for converting.
500 * @d: The #gdouble to convert
502 * Converts a #gdouble to a string, using the '.' as
503 * decimal point. To format the number you pass in
504 * a printf-style formating string. Allowed conversion
505 * specifiers are 'e', 'E', 'f', 'F', 'g' and 'G'.
507 * If you just want to want to serialize the value into a
508 * string, use g_ascii_dtostr().
510 * Return value: The pointer to the buffer with the converted string.
513 g_ascii_formatd (gchar *buffer,
518 struct lconv *locale_data;
519 const char *decimal_point;
520 int decimal_point_len;
525 g_return_val_if_fail (buffer != NULL, NULL);
526 g_return_val_if_fail (format[0] == '%', NULL);
527 g_return_val_if_fail (strpbrk (format + 1, "'l%") == NULL, NULL);
529 format_char = format[strlen (format) - 1];
531 g_return_val_if_fail (format_char == 'e' || format_char == 'E' ||
532 format_char == 'f' || format_char == 'F' ||
533 format_char == 'g' || format_char == 'G',
536 if (format[0] != '%')
539 if (strpbrk (format + 1, "'l%"))
542 if (!(format_char == 'e' || format_char == 'E' ||
543 format_char == 'f' || format_char == 'F' ||
544 format_char == 'g' || format_char == 'G'))
548 _g_snprintf (buffer, buf_len, format, d);
550 locale_data = localeconv ();
551 decimal_point = locale_data->decimal_point;
552 decimal_point_len = strlen (decimal_point);
554 g_assert (decimal_point_len != 0);
556 if (decimal_point[0] != '.' ||
557 decimal_point[1] != 0)
561 if (*p == '+' || *p == '-')
564 while (isdigit ((guchar)*p))
567 if (strncmp (p, decimal_point, decimal_point_len) == 0)
571 if (decimal_point_len > 1) {
572 rest_len = strlen (p + (decimal_point_len-1));
573 memmove (p, p + (decimal_point_len-1),
586 * @nptr: the string to convert to a numeric value.
587 * @endptr: if non-%NULL, it returns the character after
588 * the last character used in the conversion.
589 * @base: to be used for the conversion, 2..36 or 0
591 * Converts a string to a #guint64 value.
592 * This function behaves like the standard strtoull() function
593 * does in the C locale. It does this without actually
594 * changing the current locale, since that would not be
597 * This function is typically used when reading configuration
598 * files or other non-user input that should be locale independent.
599 * To handle input from the user you should normally use the
600 * locale-sensitive system strtoull() function.
602 * If the correct value would cause overflow, %G_MAXUINT64
603 * is returned, and %ERANGE is stored in %errno.
605 * Return value: the #guint64 value.
610 g_ascii_strtoull (const gchar *nptr,
614 /* this code is based on on the strtol(3) code from GNU libc released under
615 * the GNU Lesser General Public License.
617 * Copyright (C) 1991,92,94,95,96,97,98,99,2000,01,02
618 * Free Software Foundation, Inc.
620 #define ISSPACE(c) ((c) == ' ' || (c) == '\f' || (c) == '\n' || \
621 (c) == '\r' || (c) == '\t' || (c) == '\v')
622 #define ISUPPER(c) ((c) >= 'A' && (c) <= 'Z')
623 #define ISLOWER(c) ((c) >= 'a' && (c) <= 'z')
624 #define ISALPHA(c) (ISUPPER (c) || ISLOWER (c))
625 #define TOUPPER(c) (ISLOWER (c) ? (c) - 'a' + 'A' : (c))
626 #define TOLOWER(c) (ISUPPER (c) ? (c) - 'A' + 'a' : (c))
627 gboolean negative, overflow;
631 const gchar *s, *save;
634 g_return_val_if_fail (nptr != NULL, 0);
636 if (base == 1 || base > 36)
644 /* Skip white space. */
650 /* Check for a sign. */
660 /* Recognize number prefix and if BASE is zero, figure it out ourselves. */
663 if ((base == 0 || base == 16) && TOUPPER (s[1]) == 'X')
674 /* Save the pointer so we can check later if anything happened. */
676 cutoff = G_MAXUINT64 / base;
677 cutlim = G_MAXUINT64 % base;
684 if (c >= '0' && c <= '9')
686 else if (ISALPHA (c))
687 c = TOUPPER (c) - 'A' + 10;
692 /* Check for overflow. */
693 if (ui64 > cutoff || (ui64 == cutoff && c > cutlim))
702 /* Check if anything actually happened. */
706 /* Store in ENDPTR the address of one character
707 past the last character we converted. */
709 *endptr = (gchar*) s;
717 /* Return the result of the appropriate sign. */
718 return negative ? -ui64 : ui64;
721 /* We must handle a special case here: the base is 0 or 16 and the
722 first two characters are '0' and 'x', but the rest are no
723 hexadecimal digits. This is no error case. We return 0 and
724 ENDPTR points to the `x`. */
727 if (save - nptr >= 2 && TOUPPER (save[-1]) == 'X'
729 *endptr = (gchar*) &save[-1];
731 /* There was no number to convert. */
732 *endptr = (gchar*) nptr;
738 G_CONST_RETURN gchar*
739 g_strerror (gint errnum)
741 static GStaticPrivate msg_private = G_STATIC_PRIVATE_INIT;
745 const char *msg_locale;
747 msg_locale = strerror (errnum);
748 if (g_get_charset (NULL))
752 gchar *msg_utf8 = g_locale_to_utf8 (msg_locale, -1, NULL, NULL, NULL);
755 /* Stick in the quark table so that we can return a static result
757 GQuark msg_quark = g_quark_from_string (msg_utf8);
760 return g_quark_to_string (msg_quark);
767 case E2BIG: return "argument list too long";
770 case EACCES: return "permission denied";
773 case EADDRINUSE: return "address already in use";
776 case EADDRNOTAVAIL: return "can't assign requested address";
779 case EADV: return "advertise error";
782 case EAFNOSUPPORT: return "address family not supported by protocol family";
785 case EAGAIN: return "try again";
788 case EALIGN: return "EALIGN";
791 case EALREADY: return "operation already in progress";
794 case EBADE: return "bad exchange descriptor";
797 case EBADF: return "bad file number";
800 case EBADFD: return "file descriptor in bad state";
803 case EBADMSG: return "not a data message";
806 case EBADR: return "bad request descriptor";
809 case EBADRPC: return "RPC structure is bad";
812 case EBADRQC: return "bad request code";
815 case EBADSLT: return "invalid slot";
818 case EBFONT: return "bad font file format";
821 case EBUSY: return "mount device busy";
824 case ECHILD: return "no children";
827 case ECHRNG: return "channel number out of range";
830 case ECOMM: return "communication error on send";
833 case ECONNABORTED: return "software caused connection abort";
836 case ECONNREFUSED: return "connection refused";
839 case ECONNRESET: return "connection reset by peer";
841 #if defined(EDEADLK) && (!defined(EWOULDBLOCK) || (EDEADLK != EWOULDBLOCK))
842 case EDEADLK: return "resource deadlock avoided";
845 case EDEADLOCK: return "resource deadlock avoided";
848 case EDESTADDRREQ: return "destination address required";
851 case EDIRTY: return "mounting a dirty fs w/o force";
854 case EDOM: return "math argument out of range";
857 case EDOTDOT: return "cross mount point";
860 case EDQUOT: return "disk quota exceeded";
863 case EDUPPKG: return "duplicate package name";
866 case EEXIST: return "file already exists";
869 case EFAULT: return "bad address in system call argument";
872 case EFBIG: return "file too large";
875 case EHOSTDOWN: return "host is down";
878 case EHOSTUNREACH: return "host is unreachable";
881 case EIDRM: return "identifier removed";
884 case EINIT: return "initialization error";
887 case EINPROGRESS: return "operation now in progress";
890 case EINTR: return "interrupted system call";
893 case EINVAL: return "invalid argument";
896 case EIO: return "I/O error";
899 case EISCONN: return "socket is already connected";
902 case EISDIR: return "is a directory";
905 case EISNAM: return "is a name file";
908 case ELBIN: return "ELBIN";
911 case EL2HLT: return "level 2 halted";
914 case EL2NSYNC: return "level 2 not synchronized";
917 case EL3HLT: return "level 3 halted";
920 case EL3RST: return "level 3 reset";
923 case ELIBACC: return "can not access a needed shared library";
926 case ELIBBAD: return "accessing a corrupted shared library";
929 case ELIBEXEC: return "can not exec a shared library directly";
932 case ELIBMAX: return "attempting to link in more shared libraries than system limit";
935 case ELIBSCN: return ".lib section in a.out corrupted";
938 case ELNRNG: return "link number out of range";
941 case ELOOP: return "too many levels of symbolic links";
944 case EMFILE: return "too many open files";
947 case EMLINK: return "too many links";
950 case EMSGSIZE: return "message too long";
953 case EMULTIHOP: return "multihop attempted";
956 case ENAMETOOLONG: return "file name too long";
959 case ENAVAIL: return "not available";
962 case ENET: return "ENET";
965 case ENETDOWN: return "network is down";
968 case ENETRESET: return "network dropped connection on reset";
971 case ENETUNREACH: return "network is unreachable";
974 case ENFILE: return "file table overflow";
977 case ENOANO: return "anode table overflow";
979 #if defined(ENOBUFS) && (!defined(ENOSR) || (ENOBUFS != ENOSR))
980 case ENOBUFS: return "no buffer space available";
983 case ENOCSI: return "no CSI structure available";
986 case ENODATA: return "no data available";
989 case ENODEV: return "no such device";
992 case ENOENT: return "no such file or directory";
995 case ENOEXEC: return "exec format error";
998 case ENOLCK: return "no locks available";
1001 case ENOLINK: return "link has be severed";
1004 case ENOMEM: return "not enough memory";
1007 case ENOMSG: return "no message of desired type";
1010 case ENONET: return "machine is not on the network";
1013 case ENOPKG: return "package not installed";
1016 case ENOPROTOOPT: return "bad proocol option";
1019 case ENOSPC: return "no space left on device";
1022 case ENOSR: return "out of stream resources";
1025 case ENOSTR: return "not a stream device";
1028 case ENOSYM: return "unresolved symbol name";
1031 case ENOSYS: return "function not implemented";
1034 case ENOTBLK: return "block device required";
1037 case ENOTCONN: return "socket is not connected";
1040 case ENOTDIR: return "not a directory";
1043 case ENOTEMPTY: return "directory not empty";
1046 case ENOTNAM: return "not a name file";
1049 case ENOTSOCK: return "socket operation on non-socket";
1052 case ENOTTY: return "inappropriate device for ioctl";
1055 case ENOTUNIQ: return "name not unique on network";
1058 case ENXIO: return "no such device or address";
1061 case EOPNOTSUPP: return "operation not supported on socket";
1064 case EPERM: return "not owner";
1067 case EPFNOSUPPORT: return "protocol family not supported";
1070 case EPIPE: return "broken pipe";
1073 case EPROCLIM: return "too many processes";
1076 case EPROCUNAVAIL: return "bad procedure for program";
1078 #ifdef EPROGMISMATCH
1079 case EPROGMISMATCH: return "program version wrong";
1082 case EPROGUNAVAIL: return "RPC program not available";
1085 case EPROTO: return "protocol error";
1087 #ifdef EPROTONOSUPPORT
1088 case EPROTONOSUPPORT: return "protocol not suppored";
1091 case EPROTOTYPE: return "protocol wrong type for socket";
1094 case ERANGE: return "math result unrepresentable";
1096 #if defined(EREFUSED) && (!defined(ECONNREFUSED) || (EREFUSED != ECONNREFUSED))
1097 case EREFUSED: return "EREFUSED";
1100 case EREMCHG: return "remote address changed";
1103 case EREMDEV: return "remote device";
1106 case EREMOTE: return "pathname hit remote file system";
1109 case EREMOTEIO: return "remote i/o error";
1111 #ifdef EREMOTERELEASE
1112 case EREMOTERELEASE: return "EREMOTERELEASE";
1115 case EROFS: return "read-only file system";
1118 case ERPCMISMATCH: return "RPC version is wrong";
1121 case ERREMOTE: return "object is remote";
1124 case ESHUTDOWN: return "can't send afer socket shutdown";
1126 #ifdef ESOCKTNOSUPPORT
1127 case ESOCKTNOSUPPORT: return "socket type not supported";
1130 case ESPIPE: return "invalid seek";
1133 case ESRCH: return "no such process";
1136 case ESRMNT: return "srmount error";
1139 case ESTALE: return "stale remote file handle";
1142 case ESUCCESS: return "Error 0";
1145 case ETIME: return "timer expired";
1148 case ETIMEDOUT: return "connection timed out";
1151 case ETOOMANYREFS: return "too many references: can't splice";
1154 case ETXTBSY: return "text file or pseudo-device busy";
1157 case EUCLEAN: return "structure needs cleaning";
1160 case EUNATCH: return "protocol driver not attached";
1163 case EUSERS: return "too many users";
1166 case EVERSION: return "version mismatch";
1168 #if defined(EWOULDBLOCK) && (!defined(EAGAIN) || (EWOULDBLOCK != EAGAIN))
1169 case EWOULDBLOCK: return "operation would block";
1172 case EXDEV: return "cross-domain link";
1175 case EXFULL: return "message tables full";
1178 #else /* NO_SYS_ERRLIST */
1179 extern int sys_nerr;
1180 extern char *sys_errlist[];
1182 if ((errnum > 0) && (errnum <= sys_nerr))
1183 return sys_errlist [errnum];
1184 #endif /* NO_SYS_ERRLIST */
1186 msg = g_static_private_get (&msg_private);
1189 msg = g_new (gchar, 64);
1190 g_static_private_set (&msg_private, msg, g_free);
1193 _g_sprintf (msg, "unknown error (%d)", errnum);
1198 G_CONST_RETURN gchar*
1199 g_strsignal (gint signum)
1201 static GStaticPrivate msg_private = G_STATIC_PRIVATE_INIT;
1204 #ifdef HAVE_STRSIGNAL
1205 const char *msg_locale;
1207 #if defined(G_OS_BEOS) || defined(G_WITH_CYGWIN)
1208 extern const char *strsignal(int);
1210 /* this is declared differently (const) in string.h on BeOS */
1211 extern char *strsignal (int sig);
1212 #endif /* !G_OS_BEOS && !G_WITH_CYGWIN */
1213 msg_locale = strsignal (signum);
1214 if (g_get_charset (NULL))
1218 gchar *msg_utf8 = g_locale_to_utf8 (msg_locale, -1, NULL, NULL, NULL);
1221 /* Stick in the quark table so that we can return a static result
1223 GQuark msg_quark = g_quark_from_string (msg_utf8);
1226 return g_quark_to_string (msg_quark);
1229 #elif NO_SYS_SIGLIST
1233 case SIGHUP: return "Hangup";
1236 case SIGINT: return "Interrupt";
1239 case SIGQUIT: return "Quit";
1242 case SIGILL: return "Illegal instruction";
1245 case SIGTRAP: return "Trace/breakpoint trap";
1248 case SIGABRT: return "IOT trap/Abort";
1251 case SIGBUS: return "Bus error";
1254 case SIGFPE: return "Floating point exception";
1257 case SIGKILL: return "Killed";
1260 case SIGUSR1: return "User defined signal 1";
1263 case SIGSEGV: return "Segmentation fault";
1266 case SIGUSR2: return "User defined signal 2";
1269 case SIGPIPE: return "Broken pipe";
1272 case SIGALRM: return "Alarm clock";
1275 case SIGTERM: return "Terminated";
1278 case SIGSTKFLT: return "Stack fault";
1281 case SIGCHLD: return "Child exited";
1284 case SIGCONT: return "Continued";
1287 case SIGSTOP: return "Stopped (signal)";
1290 case SIGTSTP: return "Stopped";
1293 case SIGTTIN: return "Stopped (tty input)";
1296 case SIGTTOU: return "Stopped (tty output)";
1299 case SIGURG: return "Urgent condition";
1302 case SIGXCPU: return "CPU time limit exceeded";
1305 case SIGXFSZ: return "File size limit exceeded";
1308 case SIGVTALRM: return "Virtual time alarm";
1311 case SIGPROF: return "Profile signal";
1314 case SIGWINCH: return "Window size changed";
1317 case SIGIO: return "Possible I/O";
1320 case SIGPWR: return "Power failure";
1323 case SIGUNUSED: return "Unused signal";
1326 #else /* NO_SYS_SIGLIST */
1328 #ifdef NO_SYS_SIGLIST_DECL
1329 extern char *sys_siglist[]; /*(see Tue Jan 19 00:44:24 1999 in changelog)*/
1332 return (char*) /* this function should return const --josh */ sys_siglist [signum];
1333 #endif /* NO_SYS_SIGLIST */
1335 msg = g_static_private_get (&msg_private);
1338 msg = g_new (gchar, 64);
1339 g_static_private_set (&msg_private, msg, g_free);
1342 _g_sprintf (msg, "unknown signal (%d)", signum);
1347 /* Functions g_strlcpy and g_strlcat were originally developed by
1348 * Todd C. Miller <Todd.Miller@courtesan.com> to simplify writing secure code.
1349 * See ftp://ftp.openbsd.org/pub/OpenBSD/src/lib/libc/string/strlcpy.3
1350 * for more information.
1354 /* Use the native ones, if available; they might be implemented in assembly */
1356 g_strlcpy (gchar *dest,
1360 g_return_val_if_fail (dest != NULL, 0);
1361 g_return_val_if_fail (src != NULL, 0);
1363 return strlcpy (dest, src, dest_size);
1367 g_strlcat (gchar *dest,
1371 g_return_val_if_fail (dest != NULL, 0);
1372 g_return_val_if_fail (src != NULL, 0);
1374 return strlcat (dest, src, dest_size);
1377 #else /* ! HAVE_STRLCPY */
1380 * Copy string src to buffer dest (of buffer size dest_size). At most
1381 * dest_size-1 characters will be copied. Always NUL terminates
1382 * (unless dest_size == 0). This function does NOT allocate memory.
1383 * Unlike strncpy, this function doesn't pad dest (so it's often faster).
1384 * Returns size of attempted result, strlen(src),
1385 * so if retval >= dest_size, truncation occurred.
1388 g_strlcpy (gchar *dest,
1392 register gchar *d = dest;
1393 register const gchar *s = src;
1394 register gsize n = dest_size;
1396 g_return_val_if_fail (dest != NULL, 0);
1397 g_return_val_if_fail (src != NULL, 0);
1399 /* Copy as many bytes as will fit */
1400 if (n != 0 && --n != 0)
1403 register gchar c = *s++;
1411 /* If not enough room in dest, add NUL and traverse rest of src */
1420 return s - src - 1; /* count does not include NUL */
1425 * Appends string src to buffer dest (of buffer size dest_size).
1426 * At most dest_size-1 characters will be copied.
1427 * Unlike strncat, dest_size is the full size of dest, not the space left over.
1428 * This function does NOT allocate memory.
1429 * This always NUL terminates (unless siz == 0 or there were no NUL characters
1430 * in the dest_size characters of dest to start with).
1431 * Returns size of attempted result, which is
1432 * MIN (dest_size, strlen (original dest)) + strlen (src),
1433 * so if retval >= dest_size, truncation occurred.
1436 g_strlcat (gchar *dest,
1440 register gchar *d = dest;
1441 register const gchar *s = src;
1442 register gsize bytes_left = dest_size;
1443 gsize dlength; /* Logically, MIN (strlen (d), dest_size) */
1445 g_return_val_if_fail (dest != NULL, 0);
1446 g_return_val_if_fail (src != NULL, 0);
1448 /* Find the end of dst and adjust bytes left but don't go past end */
1449 while (*d != 0 && bytes_left-- != 0)
1452 bytes_left = dest_size - dlength;
1454 if (bytes_left == 0)
1455 return dlength + strlen (s);
1459 if (bytes_left != 1)
1468 return dlength + (s - src); /* count does not include NUL */
1470 #endif /* ! HAVE_STRLCPY */
1475 * @len: length of @str in bytes, or -1 if @str is nul-terminated.
1477 * Converts all upper case ASCII letters to lower case ASCII letters.
1479 * Return value: a newly-allocated string, with all the upper case
1480 * characters in @str converted to lower case, with
1481 * semantics that exactly match g_ascii_tolower(). (Note
1482 * that this is unlike the old g_strdown(), which modified
1483 * the string in place.)
1486 g_ascii_strdown (const gchar *str,
1491 g_return_val_if_fail (str != NULL, NULL);
1496 result = g_strndup (str, len);
1497 for (s = result; *s; s++)
1498 *s = g_ascii_tolower (*s);
1506 * @len: length of @str in bytes, or -1 if @str is nul-terminated.
1508 * Converts all lower case ASCII letters to upper case ASCII letters.
1510 * Return value: a newly allocated string, with all the lower case
1511 * characters in @str converted to upper case, with
1512 * semantics that exactly match g_ascii_toupper(). (Note
1513 * that this is unlike the old g_strup(), which modified
1514 * the string in place.)
1517 g_ascii_strup (const gchar *str,
1522 g_return_val_if_fail (str != NULL, NULL);
1527 result = g_strndup (str, len);
1528 for (s = result; *s; s++)
1529 *s = g_ascii_toupper (*s);
1536 * @string: the string to convert.
1538 * Converts a string to lower case.
1540 * Return value: the string
1542 * Deprecated: This function is totally broken for the reasons discussed in
1543 * the g_strncasecmp() docs - use g_ascii_strdown() or g_utf8_strdown()
1547 g_strdown (gchar *string)
1551 g_return_val_if_fail (string != NULL, NULL);
1553 s = (guchar *) string;
1562 return (gchar *) string;
1567 * @string: the string to convert.
1569 * Converts a string to upper case.
1571 * Return value: the string
1573 * Deprecated: This function is totally broken for the reasons discussed in
1574 * the g_strncasecmp() docs - use g_ascii_strup() or g_utf8_strup() instead.
1577 g_strup (gchar *string)
1581 g_return_val_if_fail (string != NULL, NULL);
1583 s = (guchar *) string;
1592 return (gchar *) string;
1596 g_strreverse (gchar *string)
1598 g_return_val_if_fail (string != NULL, NULL);
1602 register gchar *h, *t;
1605 t = string + strlen (string) - 1;
1624 * @c: any character.
1626 * Convert a character to ASCII lower case.
1628 * Unlike the standard C library tolower() function, this only
1629 * recognizes standard ASCII letters and ignores the locale, returning
1630 * all non-ASCII characters unchanged, even if they are lower case
1631 * letters in a particular character set. Also unlike the standard
1632 * library function, this takes and returns a char, not an int, so
1633 * don't call it on %EOF but no need to worry about casting to #guchar
1634 * before passing a possibly non-ASCII character in.
1636 * Return value: the result of converting @c to lower case.
1637 * If @c is not an ASCII upper case letter,
1638 * @c is returned unchanged.
1641 g_ascii_tolower (gchar c)
1643 return g_ascii_isupper (c) ? c - 'A' + 'a' : c;
1648 * @c: any character.
1650 * Convert a character to ASCII upper case.
1652 * Unlike the standard C library toupper() function, this only
1653 * recognizes standard ASCII letters and ignores the locale, returning
1654 * all non-ASCII characters unchanged, even if they are upper case
1655 * letters in a particular character set. Also unlike the standard
1656 * library function, this takes and returns a char, not an int, so
1657 * don't call it on %EOF but no need to worry about casting to #guchar
1658 * before passing a possibly non-ASCII character in.
1660 * Return value: the result of converting @c to upper case.
1661 * If @c is not an ASCII lower case letter,
1662 * @c is returned unchanged.
1665 g_ascii_toupper (gchar c)
1667 return g_ascii_islower (c) ? c - 'a' + 'A' : c;
1671 * g_ascii_digit_value:
1672 * @c: an ASCII character.
1674 * Determines the numeric value of a character as a decimal
1675 * digit. Differs from g_unichar_digit_value() because it takes
1676 * a char, so there's no worry about sign extension if characters
1679 * Return value: If @c is a decimal digit (according to
1680 * g_ascii_isdigit()), its numeric value. Otherwise, -1.
1683 g_ascii_digit_value (gchar c)
1685 if (g_ascii_isdigit (c))
1691 * g_ascii_xdigit_value:
1692 * @c: an ASCII character.
1694 * Determines the numeric value of a character as a hexidecimal
1695 * digit. Differs from g_unichar_xdigit_value() because it takes
1696 * a char, so there's no worry about sign extension if characters
1699 * Return value: If @c is a hex digit (according to
1700 * g_ascii_isxdigit()), its numeric value. Otherwise, -1.
1703 g_ascii_xdigit_value (gchar c)
1705 if (c >= 'A' && c <= 'F')
1706 return c - 'A' + 10;
1707 if (c >= 'a' && c <= 'f')
1708 return c - 'a' + 10;
1709 return g_ascii_digit_value (c);
1713 * g_ascii_strcasecmp:
1714 * @s1: string to compare with @s2.
1715 * @s2: string to compare with @s1.
1717 * Compare two strings, ignoring the case of ASCII characters.
1719 * Unlike the BSD strcasecmp() function, this only recognizes standard
1720 * ASCII letters and ignores the locale, treating all non-ASCII
1721 * characters as if they are not letters.
1723 * Return value: an integer less than, equal to, or greater than
1724 * zero if @s1 is found, respectively, to be less than,
1725 * to match, or to be greater than @s2.
1728 g_ascii_strcasecmp (const gchar *s1,
1733 g_return_val_if_fail (s1 != NULL, 0);
1734 g_return_val_if_fail (s2 != NULL, 0);
1738 c1 = (gint)(guchar) g_ascii_tolower (*s1);
1739 c2 = (gint)(guchar) g_ascii_tolower (*s2);
1745 return (((gint)(guchar) *s1) - ((gint)(guchar) *s2));
1749 * g_ascii_strncasecmp:
1750 * @s1: string to compare with @s2.
1751 * @s2: string to compare with @s1.
1752 * @n: number of characters to compare.
1754 * Compare @s1 and @s2, ignoring the case of ASCII characters and any
1755 * characters after the first @n in each string.
1757 * Unlike the BSD strcasecmp() function, this only recognizes standard
1758 * ASCII letters and ignores the locale, treating all non-ASCII
1759 * characters as if they are not letters.
1761 * Return value: an integer less than, equal to, or greater than zero
1762 * if the first @n bytes of @s1 is found, respectively,
1763 * to be less than, to match, or to be greater than the
1764 * first @n bytes of @s2.
1767 g_ascii_strncasecmp (const gchar *s1,
1773 g_return_val_if_fail (s1 != NULL, 0);
1774 g_return_val_if_fail (s2 != NULL, 0);
1776 while (n && *s1 && *s2)
1779 c1 = (gint)(guchar) g_ascii_tolower (*s1);
1780 c2 = (gint)(guchar) g_ascii_tolower (*s2);
1787 return (((gint) (guchar) *s1) - ((gint) (guchar) *s2));
1795 * @s2: a string to compare with @s1.
1797 * A case-insensitive string comparison, corresponding to the standard
1798 * strcasecmp() function on platforms which support it.
1800 * Return value: 0 if the strings match, a negative value if @s1 < @s2,
1801 * or a positive value if @s1 > @s2.
1803 * Deprecated: See g_strncasecmp() for a discussion of why this function is
1804 * deprecated and how to replace it.
1807 g_strcasecmp (const gchar *s1,
1810 #ifdef HAVE_STRCASECMP
1811 g_return_val_if_fail (s1 != NULL, 0);
1812 g_return_val_if_fail (s2 != NULL, 0);
1814 return strcasecmp (s1, s2);
1818 g_return_val_if_fail (s1 != NULL, 0);
1819 g_return_val_if_fail (s2 != NULL, 0);
1823 /* According to A. Cox, some platforms have islower's that
1824 * don't work right on non-uppercase
1826 c1 = isupper ((guchar)*s1) ? tolower ((guchar)*s1) : *s1;
1827 c2 = isupper ((guchar)*s2) ? tolower ((guchar)*s2) : *s2;
1833 return (((gint)(guchar) *s1) - ((gint)(guchar) *s2));
1840 * @s2: a string to compare with @s1.
1841 * @n: the maximum number of characters to compare.
1843 * A case-insensitive string comparison, corresponding to the standard
1844 * strncasecmp() function on platforms which support it.
1845 * It is similar to g_strcasecmp() except it only compares the first @n
1846 * characters of the strings.
1848 * Return value: 0 if the strings match, a negative value if @s1 < @s2,
1849 * or a positive value if @s1 > @s2.
1851 * Deprecated: The problem with g_strncasecmp() is that it does the
1852 * comparison by calling toupper()/tolower(). These functions are
1853 * locale-specific and operate on single bytes. However, it is impossible
1854 * to handle things correctly from an I18N standpoint by operating on
1855 * bytes, since characters may be multibyte. Thus g_strncasecmp() is
1856 * broken if your string is guaranteed to be ASCII, since it's
1857 * locale-sensitive, and it's broken if your string is localized, since
1858 * 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;