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.
608 g_ascii_strtoull (const gchar *nptr,
612 /* this code is based on on the strtol(3) code from GNU libc released under
613 * the GNU Lesser General Public License.
615 * Copyright (C) 1991,92,94,95,96,97,98,99,2000,01,02
616 * Free Software Foundation, Inc.
618 #define ISSPACE(c) ((c) == ' ' || (c) == '\f' || (c) == '\n' || \
619 (c) == '\r' || (c) == '\t' || (c) == '\v')
620 #define ISUPPER(c) ((c) >= 'A' && (c) <= 'Z')
621 #define ISLOWER(c) ((c) >= 'a' && (c) <= 'z')
622 #define ISALPHA(c) (ISUPPER (c) || ISLOWER (c))
623 #define TOUPPER(c) (ISLOWER (c) ? (c) - 'a' + 'A' : (c))
624 #define TOLOWER(c) (ISUPPER (c) ? (c) - 'A' + 'a' : (c))
625 gboolean negative, overflow;
629 const gchar *s, *save;
632 g_return_val_if_fail (nptr != NULL, 0);
634 if (base == 1 || base > 36)
642 /* Skip white space. */
648 /* Check for a sign. */
658 /* Recognize number prefix and if BASE is zero, figure it out ourselves. */
661 if ((base == 0 || base == 16) && TOUPPER (s[1]) == 'X')
672 /* Save the pointer so we can check later if anything happened. */
674 cutoff = G_MAXUINT64 / base;
675 cutlim = G_MAXUINT64 % base;
682 if (c >= '0' && c <= '9')
684 else if (ISALPHA (c))
685 c = TOUPPER (c) - 'A' + 10;
690 /* Check for overflow. */
691 if (ui64 > cutoff || (ui64 == cutoff && c > cutlim))
700 /* Check if anything actually happened. */
704 /* Store in ENDPTR the address of one character
705 past the last character we converted. */
707 *endptr = (gchar*) s;
715 /* Return the result of the appropriate sign. */
716 return negative ? -ui64 : ui64;
719 /* We must handle a special case here: the base is 0 or 16 and the
720 first two characters are '0' and 'x', but the rest are no
721 hexadecimal digits. This is no error case. We return 0 and
722 ENDPTR points to the `x`. */
725 if (save - nptr >= 2 && TOUPPER (save[-1]) == 'X'
727 *endptr = (gchar*) &save[-1];
729 /* There was no number to convert. */
730 *endptr = (gchar*) nptr;
736 G_CONST_RETURN gchar*
737 g_strerror (gint errnum)
739 static GStaticPrivate msg_private = G_STATIC_PRIVATE_INIT;
743 const char *msg_locale;
745 msg_locale = strerror (errnum);
746 if (g_get_charset (NULL))
750 gchar *msg_utf8 = g_locale_to_utf8 (msg_locale, -1, NULL, NULL, NULL);
753 /* Stick in the quark table so that we can return a static result
755 GQuark msg_quark = g_quark_from_string (msg_utf8);
758 return g_quark_to_string (msg_quark);
765 case E2BIG: return "argument list too long";
768 case EACCES: return "permission denied";
771 case EADDRINUSE: return "address already in use";
774 case EADDRNOTAVAIL: return "can't assign requested address";
777 case EADV: return "advertise error";
780 case EAFNOSUPPORT: return "address family not supported by protocol family";
783 case EAGAIN: return "try again";
786 case EALIGN: return "EALIGN";
789 case EALREADY: return "operation already in progress";
792 case EBADE: return "bad exchange descriptor";
795 case EBADF: return "bad file number";
798 case EBADFD: return "file descriptor in bad state";
801 case EBADMSG: return "not a data message";
804 case EBADR: return "bad request descriptor";
807 case EBADRPC: return "RPC structure is bad";
810 case EBADRQC: return "bad request code";
813 case EBADSLT: return "invalid slot";
816 case EBFONT: return "bad font file format";
819 case EBUSY: return "mount device busy";
822 case ECHILD: return "no children";
825 case ECHRNG: return "channel number out of range";
828 case ECOMM: return "communication error on send";
831 case ECONNABORTED: return "software caused connection abort";
834 case ECONNREFUSED: return "connection refused";
837 case ECONNRESET: return "connection reset by peer";
839 #if defined(EDEADLK) && (!defined(EWOULDBLOCK) || (EDEADLK != EWOULDBLOCK))
840 case EDEADLK: return "resource deadlock avoided";
843 case EDEADLOCK: return "resource deadlock avoided";
846 case EDESTADDRREQ: return "destination address required";
849 case EDIRTY: return "mounting a dirty fs w/o force";
852 case EDOM: return "math argument out of range";
855 case EDOTDOT: return "cross mount point";
858 case EDQUOT: return "disk quota exceeded";
861 case EDUPPKG: return "duplicate package name";
864 case EEXIST: return "file already exists";
867 case EFAULT: return "bad address in system call argument";
870 case EFBIG: return "file too large";
873 case EHOSTDOWN: return "host is down";
876 case EHOSTUNREACH: return "host is unreachable";
879 case EIDRM: return "identifier removed";
882 case EINIT: return "initialization error";
885 case EINPROGRESS: return "operation now in progress";
888 case EINTR: return "interrupted system call";
891 case EINVAL: return "invalid argument";
894 case EIO: return "I/O error";
897 case EISCONN: return "socket is already connected";
900 case EISDIR: return "is a directory";
903 case EISNAM: return "is a name file";
906 case ELBIN: return "ELBIN";
909 case EL2HLT: return "level 2 halted";
912 case EL2NSYNC: return "level 2 not synchronized";
915 case EL3HLT: return "level 3 halted";
918 case EL3RST: return "level 3 reset";
921 case ELIBACC: return "can not access a needed shared library";
924 case ELIBBAD: return "accessing a corrupted shared library";
927 case ELIBEXEC: return "can not exec a shared library directly";
930 case ELIBMAX: return "attempting to link in more shared libraries than system limit";
933 case ELIBSCN: return ".lib section in a.out corrupted";
936 case ELNRNG: return "link number out of range";
939 case ELOOP: return "too many levels of symbolic links";
942 case EMFILE: return "too many open files";
945 case EMLINK: return "too many links";
948 case EMSGSIZE: return "message too long";
951 case EMULTIHOP: return "multihop attempted";
954 case ENAMETOOLONG: return "file name too long";
957 case ENAVAIL: return "not available";
960 case ENET: return "ENET";
963 case ENETDOWN: return "network is down";
966 case ENETRESET: return "network dropped connection on reset";
969 case ENETUNREACH: return "network is unreachable";
972 case ENFILE: return "file table overflow";
975 case ENOANO: return "anode table overflow";
977 #if defined(ENOBUFS) && (!defined(ENOSR) || (ENOBUFS != ENOSR))
978 case ENOBUFS: return "no buffer space available";
981 case ENOCSI: return "no CSI structure available";
984 case ENODATA: return "no data available";
987 case ENODEV: return "no such device";
990 case ENOENT: return "no such file or directory";
993 case ENOEXEC: return "exec format error";
996 case ENOLCK: return "no locks available";
999 case ENOLINK: return "link has be severed";
1002 case ENOMEM: return "not enough memory";
1005 case ENOMSG: return "no message of desired type";
1008 case ENONET: return "machine is not on the network";
1011 case ENOPKG: return "package not installed";
1014 case ENOPROTOOPT: return "bad proocol option";
1017 case ENOSPC: return "no space left on device";
1020 case ENOSR: return "out of stream resources";
1023 case ENOSTR: return "not a stream device";
1026 case ENOSYM: return "unresolved symbol name";
1029 case ENOSYS: return "function not implemented";
1032 case ENOTBLK: return "block device required";
1035 case ENOTCONN: return "socket is not connected";
1038 case ENOTDIR: return "not a directory";
1041 case ENOTEMPTY: return "directory not empty";
1044 case ENOTNAM: return "not a name file";
1047 case ENOTSOCK: return "socket operation on non-socket";
1050 case ENOTTY: return "inappropriate device for ioctl";
1053 case ENOTUNIQ: return "name not unique on network";
1056 case ENXIO: return "no such device or address";
1059 case EOPNOTSUPP: return "operation not supported on socket";
1062 case EPERM: return "not owner";
1065 case EPFNOSUPPORT: return "protocol family not supported";
1068 case EPIPE: return "broken pipe";
1071 case EPROCLIM: return "too many processes";
1074 case EPROCUNAVAIL: return "bad procedure for program";
1076 #ifdef EPROGMISMATCH
1077 case EPROGMISMATCH: return "program version wrong";
1080 case EPROGUNAVAIL: return "RPC program not available";
1083 case EPROTO: return "protocol error";
1085 #ifdef EPROTONOSUPPORT
1086 case EPROTONOSUPPORT: return "protocol not suppored";
1089 case EPROTOTYPE: return "protocol wrong type for socket";
1092 case ERANGE: return "math result unrepresentable";
1094 #if defined(EREFUSED) && (!defined(ECONNREFUSED) || (EREFUSED != ECONNREFUSED))
1095 case EREFUSED: return "EREFUSED";
1098 case EREMCHG: return "remote address changed";
1101 case EREMDEV: return "remote device";
1104 case EREMOTE: return "pathname hit remote file system";
1107 case EREMOTEIO: return "remote i/o error";
1109 #ifdef EREMOTERELEASE
1110 case EREMOTERELEASE: return "EREMOTERELEASE";
1113 case EROFS: return "read-only file system";
1116 case ERPCMISMATCH: return "RPC version is wrong";
1119 case ERREMOTE: return "object is remote";
1122 case ESHUTDOWN: return "can't send afer socket shutdown";
1124 #ifdef ESOCKTNOSUPPORT
1125 case ESOCKTNOSUPPORT: return "socket type not supported";
1128 case ESPIPE: return "invalid seek";
1131 case ESRCH: return "no such process";
1134 case ESRMNT: return "srmount error";
1137 case ESTALE: return "stale remote file handle";
1140 case ESUCCESS: return "Error 0";
1143 case ETIME: return "timer expired";
1146 case ETIMEDOUT: return "connection timed out";
1149 case ETOOMANYREFS: return "too many references: can't splice";
1152 case ETXTBSY: return "text file or pseudo-device busy";
1155 case EUCLEAN: return "structure needs cleaning";
1158 case EUNATCH: return "protocol driver not attached";
1161 case EUSERS: return "too many users";
1164 case EVERSION: return "version mismatch";
1166 #if defined(EWOULDBLOCK) && (!defined(EAGAIN) || (EWOULDBLOCK != EAGAIN))
1167 case EWOULDBLOCK: return "operation would block";
1170 case EXDEV: return "cross-domain link";
1173 case EXFULL: return "message tables full";
1176 #else /* NO_SYS_ERRLIST */
1177 extern int sys_nerr;
1178 extern char *sys_errlist[];
1180 if ((errnum > 0) && (errnum <= sys_nerr))
1181 return sys_errlist [errnum];
1182 #endif /* NO_SYS_ERRLIST */
1184 msg = g_static_private_get (&msg_private);
1187 msg = g_new (gchar, 64);
1188 g_static_private_set (&msg_private, msg, g_free);
1191 _g_sprintf (msg, "unknown error (%d)", errnum);
1196 G_CONST_RETURN gchar*
1197 g_strsignal (gint signum)
1199 static GStaticPrivate msg_private = G_STATIC_PRIVATE_INIT;
1202 #ifdef HAVE_STRSIGNAL
1203 const char *msg_locale;
1205 #if defined(G_OS_BEOS) || defined(G_WITH_CYGWIN)
1206 extern const char *strsignal(int);
1208 /* this is declared differently (const) in string.h on BeOS */
1209 extern char *strsignal (int sig);
1210 #endif /* !G_OS_BEOS && !G_WITH_CYGWIN */
1211 msg_locale = strsignal (signum);
1212 if (g_get_charset (NULL))
1216 gchar *msg_utf8 = g_locale_to_utf8 (msg_locale, -1, NULL, NULL, NULL);
1219 /* Stick in the quark table so that we can return a static result
1221 GQuark msg_quark = g_quark_from_string (msg_utf8);
1224 return g_quark_to_string (msg_quark);
1227 #elif NO_SYS_SIGLIST
1231 case SIGHUP: return "Hangup";
1234 case SIGINT: return "Interrupt";
1237 case SIGQUIT: return "Quit";
1240 case SIGILL: return "Illegal instruction";
1243 case SIGTRAP: return "Trace/breakpoint trap";
1246 case SIGABRT: return "IOT trap/Abort";
1249 case SIGBUS: return "Bus error";
1252 case SIGFPE: return "Floating point exception";
1255 case SIGKILL: return "Killed";
1258 case SIGUSR1: return "User defined signal 1";
1261 case SIGSEGV: return "Segmentation fault";
1264 case SIGUSR2: return "User defined signal 2";
1267 case SIGPIPE: return "Broken pipe";
1270 case SIGALRM: return "Alarm clock";
1273 case SIGTERM: return "Terminated";
1276 case SIGSTKFLT: return "Stack fault";
1279 case SIGCHLD: return "Child exited";
1282 case SIGCONT: return "Continued";
1285 case SIGSTOP: return "Stopped (signal)";
1288 case SIGTSTP: return "Stopped";
1291 case SIGTTIN: return "Stopped (tty input)";
1294 case SIGTTOU: return "Stopped (tty output)";
1297 case SIGURG: return "Urgent condition";
1300 case SIGXCPU: return "CPU time limit exceeded";
1303 case SIGXFSZ: return "File size limit exceeded";
1306 case SIGVTALRM: return "Virtual time alarm";
1309 case SIGPROF: return "Profile signal";
1312 case SIGWINCH: return "Window size changed";
1315 case SIGIO: return "Possible I/O";
1318 case SIGPWR: return "Power failure";
1321 case SIGUNUSED: return "Unused signal";
1324 #else /* NO_SYS_SIGLIST */
1326 #ifdef NO_SYS_SIGLIST_DECL
1327 extern char *sys_siglist[]; /*(see Tue Jan 19 00:44:24 1999 in changelog)*/
1330 return (char*) /* this function should return const --josh */ sys_siglist [signum];
1331 #endif /* NO_SYS_SIGLIST */
1333 msg = g_static_private_get (&msg_private);
1336 msg = g_new (gchar, 64);
1337 g_static_private_set (&msg_private, msg, g_free);
1340 _g_sprintf (msg, "unknown signal (%d)", signum);
1345 /* Functions g_strlcpy and g_strlcat were originally developed by
1346 * Todd C. Miller <Todd.Miller@courtesan.com> to simplify writing secure code.
1347 * See ftp://ftp.openbsd.org/pub/OpenBSD/src/lib/libc/string/strlcpy.3
1348 * for more information.
1352 /* Use the native ones, if available; they might be implemented in assembly */
1354 g_strlcpy (gchar *dest,
1358 g_return_val_if_fail (dest != NULL, 0);
1359 g_return_val_if_fail (src != NULL, 0);
1361 return strlcpy (dest, src, dest_size);
1365 g_strlcat (gchar *dest,
1369 g_return_val_if_fail (dest != NULL, 0);
1370 g_return_val_if_fail (src != NULL, 0);
1372 return strlcat (dest, src, dest_size);
1375 #else /* ! HAVE_STRLCPY */
1378 * Copy string src to buffer dest (of buffer size dest_size). At most
1379 * dest_size-1 characters will be copied. Always NUL terminates
1380 * (unless dest_size == 0). This function does NOT allocate memory.
1381 * Unlike strncpy, this function doesn't pad dest (so it's often faster).
1382 * Returns size of attempted result, strlen(src),
1383 * so if retval >= dest_size, truncation occurred.
1386 g_strlcpy (gchar *dest,
1390 register gchar *d = dest;
1391 register const gchar *s = src;
1392 register gsize n = dest_size;
1394 g_return_val_if_fail (dest != NULL, 0);
1395 g_return_val_if_fail (src != NULL, 0);
1397 /* Copy as many bytes as will fit */
1398 if (n != 0 && --n != 0)
1401 register gchar c = *s++;
1409 /* If not enough room in dest, add NUL and traverse rest of src */
1418 return s - src - 1; /* count does not include NUL */
1423 * Appends string src to buffer dest (of buffer size dest_size).
1424 * At most dest_size-1 characters will be copied.
1425 * Unlike strncat, dest_size is the full size of dest, not the space left over.
1426 * This function does NOT allocate memory.
1427 * This always NUL terminates (unless siz == 0 or there were no NUL characters
1428 * in the dest_size characters of dest to start with).
1429 * Returns size of attempted result, which is
1430 * MIN (dest_size, strlen (original dest)) + strlen (src),
1431 * so if retval >= dest_size, truncation occurred.
1434 g_strlcat (gchar *dest,
1438 register gchar *d = dest;
1439 register const gchar *s = src;
1440 register gsize bytes_left = dest_size;
1441 gsize dlength; /* Logically, MIN (strlen (d), dest_size) */
1443 g_return_val_if_fail (dest != NULL, 0);
1444 g_return_val_if_fail (src != NULL, 0);
1446 /* Find the end of dst and adjust bytes left but don't go past end */
1447 while (*d != 0 && bytes_left-- != 0)
1450 bytes_left = dest_size - dlength;
1452 if (bytes_left == 0)
1453 return dlength + strlen (s);
1457 if (bytes_left != 1)
1466 return dlength + (s - src); /* count does not include NUL */
1468 #endif /* ! HAVE_STRLCPY */
1473 * @len: length of @str in bytes, or -1 if @str is nul-terminated.
1475 * Converts all upper case ASCII letters to lower case ASCII letters.
1477 * Return value: a newly-allocated string, with all the upper case
1478 * characters in @str converted to lower case, with
1479 * semantics that exactly match g_ascii_tolower(). (Note
1480 * that this is unlike the old g_strdown(), which modified
1481 * the string in place.)
1484 g_ascii_strdown (const gchar *str,
1489 g_return_val_if_fail (str != NULL, NULL);
1494 result = g_strndup (str, len);
1495 for (s = result; *s; s++)
1496 *s = g_ascii_tolower (*s);
1504 * @len: length of @str in bytes, or -1 if @str is nul-terminated.
1506 * Converts all lower case ASCII letters to upper case ASCII letters.
1508 * Return value: a newly allocated string, with all the lower case
1509 * characters in @str converted to upper case, with
1510 * semantics that exactly match g_ascii_toupper(). (Note
1511 * that this is unlike the old g_strup(), which modified
1512 * the string in place.)
1515 g_ascii_strup (const gchar *str,
1520 g_return_val_if_fail (str != NULL, NULL);
1525 result = g_strndup (str, len);
1526 for (s = result; *s; s++)
1527 *s = g_ascii_toupper (*s);
1533 g_strdown (gchar *string)
1537 g_return_val_if_fail (string != NULL, NULL);
1539 s = (guchar *) string;
1548 return (gchar *) string;
1552 g_strup (gchar *string)
1556 g_return_val_if_fail (string != NULL, NULL);
1558 s = (guchar *) string;
1567 return (gchar *) string;
1571 g_strreverse (gchar *string)
1573 g_return_val_if_fail (string != NULL, NULL);
1577 register gchar *h, *t;
1580 t = string + strlen (string) - 1;
1599 * @c: any character.
1601 * Convert a character to ASCII lower case.
1603 * Unlike the standard C library tolower() function, this only
1604 * recognizes standard ASCII letters and ignores the locale, returning
1605 * all non-ASCII characters unchanged, even if they are lower case
1606 * letters in a particular character set. Also unlike the standard
1607 * library function, this takes and returns a char, not an int, so
1608 * don't call it on %EOF but no need to worry about casting to #guchar
1609 * before passing a possibly non-ASCII character in.
1611 * Return value: the result of converting @c to lower case.
1612 * If @c is not an ASCII upper case letter,
1613 * @c is returned unchanged.
1616 g_ascii_tolower (gchar c)
1618 return g_ascii_isupper (c) ? c - 'A' + 'a' : c;
1623 * @c: any character.
1625 * Convert a character to ASCII upper case.
1627 * Unlike the standard C library toupper() function, this only
1628 * recognizes standard ASCII letters and ignores the locale, returning
1629 * all non-ASCII characters unchanged, even if they are upper 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 upper case.
1636 * If @c is not an ASCII lower case letter,
1637 * @c is returned unchanged.
1640 g_ascii_toupper (gchar c)
1642 return g_ascii_islower (c) ? c - 'a' + 'A' : c;
1646 * g_ascii_digit_value:
1647 * @c: an ASCII character.
1649 * Determines the numeric value of a character as a decimal
1650 * digit. Differs from g_unichar_digit_value() because it takes
1651 * a char, so there's no worry about sign extension if characters
1654 * Return value: If @c is a decimal digit (according to
1655 * g_ascii_isdigit()), its numeric value. Otherwise, -1.
1658 g_ascii_digit_value (gchar c)
1660 if (g_ascii_isdigit (c))
1666 * g_ascii_xdigit_value:
1667 * @c: an ASCII character.
1669 * Determines the numeric value of a character as a hexidecimal
1670 * digit. Differs from g_unichar_xdigit_value() because it takes
1671 * a char, so there's no worry about sign extension if characters
1674 * Return value: If @c is a hex digit (according to
1675 * g_ascii_isxdigit()), its numeric value. Otherwise, -1.
1678 g_ascii_xdigit_value (gchar c)
1680 if (c >= 'A' && c <= 'F')
1681 return c - 'A' + 10;
1682 if (c >= 'a' && c <= 'f')
1683 return c - 'a' + 10;
1684 return g_ascii_digit_value (c);
1688 * g_ascii_strcasecmp:
1689 * @s1: string to compare with @s2.
1690 * @s2: string to compare with @s1.
1692 * Compare two strings, ignoring the case of ASCII characters.
1694 * Unlike the BSD strcasecmp() function, this only recognizes standard
1695 * ASCII letters and ignores the locale, treating all non-ASCII
1696 * characters as if they are not letters.
1698 * Return value: an integer less than, equal to, or greater than
1699 * zero if @s1 is found, respectively, to be less than,
1700 * to match, or to be greater than @s2.
1703 g_ascii_strcasecmp (const gchar *s1,
1708 g_return_val_if_fail (s1 != NULL, 0);
1709 g_return_val_if_fail (s2 != NULL, 0);
1713 c1 = (gint)(guchar) g_ascii_tolower (*s1);
1714 c2 = (gint)(guchar) g_ascii_tolower (*s2);
1720 return (((gint)(guchar) *s1) - ((gint)(guchar) *s2));
1724 * g_ascii_strncasecmp:
1725 * @s1: string to compare with @s2.
1726 * @s2: string to compare with @s1.
1727 * @n: number of characters to compare.
1729 * Compare @s1 and @s2, ignoring the case of ASCII characters and any
1730 * characters after the first @n in each string.
1732 * Unlike the BSD strcasecmp() function, this only recognizes standard
1733 * ASCII letters and ignores the locale, treating all non-ASCII
1734 * characters as if they are not letters.
1736 * Return value: an integer less than, equal to, or greater than zero
1737 * if the first @n bytes of @s1 is found, respectively,
1738 * to be less than, to match, or to be greater than the
1739 * first @n bytes of @s2.
1742 g_ascii_strncasecmp (const gchar *s1,
1748 g_return_val_if_fail (s1 != NULL, 0);
1749 g_return_val_if_fail (s2 != NULL, 0);
1751 while (n && *s1 && *s2)
1754 c1 = (gint)(guchar) g_ascii_tolower (*s1);
1755 c2 = (gint)(guchar) g_ascii_tolower (*s2);
1762 return (((gint) (guchar) *s1) - ((gint) (guchar) *s2));
1768 g_strcasecmp (const gchar *s1,
1771 #ifdef HAVE_STRCASECMP
1772 g_return_val_if_fail (s1 != NULL, 0);
1773 g_return_val_if_fail (s2 != NULL, 0);
1775 return strcasecmp (s1, s2);
1779 g_return_val_if_fail (s1 != NULL, 0);
1780 g_return_val_if_fail (s2 != NULL, 0);
1784 /* According to A. Cox, some platforms have islower's that
1785 * don't work right on non-uppercase
1787 c1 = isupper ((guchar)*s1) ? tolower ((guchar)*s1) : *s1;
1788 c2 = isupper ((guchar)*s2) ? tolower ((guchar)*s2) : *s2;
1794 return (((gint)(guchar) *s1) - ((gint)(guchar) *s2));
1799 g_strncasecmp (const gchar *s1,
1803 #ifdef HAVE_STRNCASECMP
1804 return strncasecmp (s1, s2, n);
1808 g_return_val_if_fail (s1 != NULL, 0);
1809 g_return_val_if_fail (s2 != NULL, 0);
1811 while (n && *s1 && *s2)
1814 /* According to A. Cox, some platforms have islower's that
1815 * don't work right on non-uppercase
1817 c1 = isupper ((guchar)*s1) ? tolower ((guchar)*s1) : *s1;
1818 c2 = isupper ((guchar)*s2) ? tolower ((guchar)*s2) : *s2;
1825 return (((gint) (guchar) *s1) - ((gint) (guchar) *s2));
1832 g_strdelimit (gchar *string,
1833 const gchar *delimiters,
1838 g_return_val_if_fail (string != NULL, NULL);
1841 delimiters = G_STR_DELIMITERS;
1843 for (c = string; *c; c++)
1845 if (strchr (delimiters, *c))
1853 g_strcanon (gchar *string,
1854 const gchar *valid_chars,
1859 g_return_val_if_fail (string != NULL, NULL);
1860 g_return_val_if_fail (valid_chars != NULL, NULL);
1862 for (c = string; *c; c++)
1864 if (!strchr (valid_chars, *c))
1872 g_strcompress (const gchar *source)
1874 const gchar *p = source, *octal;
1875 gchar *dest = g_malloc (strlen (source) + 1);
1885 case '0': case '1': case '2': case '3': case '4':
1886 case '5': case '6': case '7':
1889 while ((p < octal + 3) && (*p >= '0') && (*p <= '7'))
1891 *q = (*q * 8) + (*p - '0');
1912 default: /* Also handles \" and \\ */
1927 g_strescape (const gchar *source,
1928 const gchar *exceptions)
1935 g_return_val_if_fail (source != NULL, NULL);
1937 p = (guchar *) source;
1938 /* Each source byte needs maximally four destination chars (\777) */
1939 q = dest = g_malloc (strlen (source) * 4 + 1);
1941 memset (excmap, 0, 256);
1944 guchar *e = (guchar *) exceptions;
1990 if ((*p < ' ') || (*p >= 0177))
1993 *q++ = '0' + (((*p) >> 6) & 07);
1994 *q++ = '0' + (((*p) >> 3) & 07);
1995 *q++ = '0' + ((*p) & 07);
2009 g_strchug (gchar *string)
2013 g_return_val_if_fail (string != NULL, NULL);
2015 for (start = (guchar*) string; *start && g_ascii_isspace (*start); start++)
2018 g_memmove (string, start, strlen ((gchar *) start) + 1);
2024 g_strchomp (gchar *string)
2028 g_return_val_if_fail (string != NULL, NULL);
2030 len = strlen (string);
2033 if (g_ascii_isspace ((guchar) string[len]))
2044 * @string: a string to split.
2045 * @delimiter: a string which specifies the places at which to split the string.
2046 * The delimiter is not included in any of the resulting strings, unless
2047 * @max_tokens is reached.
2048 * @max_tokens: the maximum number of pieces to split @string into. If this is
2049 * less than 1, the string is split completely.
2051 * Splits a string into a maximum of @max_tokens pieces, using the given
2052 * @delimiter. If @max_tokens is reached, the remainder of @string is appended
2053 * to the last token.
2055 * As a special case, the result of splitting the empty string "" is an empty
2056 * vector, not a vector containing a single string. The reason for this
2057 * special case is that being able to represent a empty vector is typically
2058 * more useful than consistent handling of empty elements. If you do need
2059 * to represent empty elements, you'll need to check for the empty string
2060 * before calling g_strsplit().
2062 * Return value: a newly-allocated %NULL-terminated array of strings. Use
2063 * g_strfreev() to free it.
2066 g_strsplit (const gchar *string,
2067 const gchar *delimiter,
2070 GSList *string_list = NULL, *slist;
2071 gchar **str_array, *s;
2073 const gchar *remainder;
2075 g_return_val_if_fail (string != NULL, NULL);
2076 g_return_val_if_fail (delimiter != NULL, NULL);
2077 g_return_val_if_fail (delimiter[0] != '\0', NULL);
2080 max_tokens = G_MAXINT;
2083 s = strstr (remainder, delimiter);
2086 gsize delimiter_len = strlen (delimiter);
2088 while (--max_tokens && s)
2093 len = s - remainder;
2094 new_string = g_new (gchar, len + 1);
2095 strncpy (new_string, remainder, len);
2096 new_string[len] = 0;
2097 string_list = g_slist_prepend (string_list, new_string);
2099 remainder = s + delimiter_len;
2100 s = strstr (remainder, delimiter);
2106 string_list = g_slist_prepend (string_list, g_strdup (remainder));
2109 str_array = g_new (gchar*, n + 1);
2111 str_array[n--] = NULL;
2112 for (slist = string_list; slist; slist = slist->next)
2113 str_array[n--] = slist->data;
2115 g_slist_free (string_list);
2121 g_strfreev (gchar **str_array)
2127 for(i = 0; str_array[i] != NULL; i++)
2128 g_free(str_array[i]);
2136 * @str_array: %NULL-terminated array of strings.
2138 * Copies %NULL-terminated array of strings. The copy is a deep copy;
2139 * the new array should be freed by first freeing each string, then
2140 * the array itself. g_strfreev() does this for you. If called
2141 * on a %NULL value, g_strdupv() simply returns %NULL.
2143 * Return value: a new %NULL-terminated array of strings.
2146 g_strdupv (gchar **str_array)
2154 while (str_array[i])
2157 retval = g_new (gchar*, i + 1);
2160 while (str_array[i])
2162 retval[i] = g_strdup (str_array[i]);
2174 g_strjoinv (const gchar *separator,
2180 g_return_val_if_fail (str_array != NULL, NULL);
2182 if (separator == NULL)
2189 gsize separator_len;
2191 separator_len = strlen (separator);
2192 /* First part, getting length */
2193 len = 1 + strlen (str_array[0]);
2194 for (i = 1; str_array[i] != NULL; i++)
2195 len += strlen (str_array[i]);
2196 len += separator_len * (i - 1);
2198 /* Second part, building string */
2199 string = g_new (gchar, len);
2200 ptr = g_stpcpy (string, *str_array);
2201 for (i = 1; str_array[i] != NULL; i++)
2203 ptr = g_stpcpy (ptr, separator);
2204 ptr = g_stpcpy (ptr, str_array[i]);
2208 string = g_strdup ("");
2214 g_strjoin (const gchar *separator,
2220 gsize separator_len;
2223 if (separator == NULL)
2226 separator_len = strlen (separator);
2228 va_start (args, separator);
2230 s = va_arg (args, gchar*);
2234 /* First part, getting length */
2235 len = 1 + strlen (s);
2237 s = va_arg (args, gchar*);
2240 len += separator_len + strlen (s);
2241 s = va_arg (args, gchar*);
2245 /* Second part, building string */
2246 string = g_new (gchar, len);
2248 va_start (args, separator);
2250 s = va_arg (args, gchar*);
2251 ptr = g_stpcpy (string, s);
2253 s = va_arg (args, gchar*);
2256 ptr = g_stpcpy (ptr, separator);
2257 ptr = g_stpcpy (ptr, s);
2258 s = va_arg (args, gchar*);
2262 string = g_strdup ("");
2272 * @haystack: a string.
2273 * @haystack_len: the maximum length of @haystack.
2274 * @needle: the string to search for.
2276 * Searches the string @haystack for the first occurrence
2277 * of the string @needle, limiting the length of the search
2280 * Return value: a pointer to the found occurrence, or
2281 * %NULL if not found.
2284 g_strstr_len (const gchar *haystack,
2285 gssize haystack_len,
2286 const gchar *needle)
2288 g_return_val_if_fail (haystack != NULL, NULL);
2289 g_return_val_if_fail (needle != NULL, NULL);
2291 if (haystack_len < 0)
2292 return strstr (haystack, needle);
2295 const gchar *p = haystack;
2296 gsize needle_len = strlen (needle);
2300 if (needle_len == 0)
2301 return (gchar *)haystack;
2303 if (haystack_len < needle_len)
2306 end = haystack + haystack_len - needle_len;
2308 while (*p && p <= end)
2310 for (i = 0; i < needle_len; i++)
2311 if (p[i] != needle[i])
2326 * @haystack: a nul-terminated string.
2327 * @needle: the nul-terminated string to search for.
2329 * Searches the string @haystack for the last occurrence
2330 * of the string @needle.
2332 * Return value: a pointer to the found occurrence, or
2333 * %NULL if not found.
2336 g_strrstr (const gchar *haystack,
2337 const gchar *needle)
2344 g_return_val_if_fail (haystack != NULL, NULL);
2345 g_return_val_if_fail (needle != NULL, NULL);
2347 needle_len = strlen (needle);
2348 haystack_len = strlen (haystack);
2350 if (needle_len == 0)
2351 return (gchar *)haystack;
2353 if (haystack_len < needle_len)
2356 p = haystack + haystack_len - needle_len;
2358 while (p >= haystack)
2360 for (i = 0; i < needle_len; i++)
2361 if (p[i] != needle[i])
2375 * @haystack: a nul-terminated string.
2376 * @haystack_len: the maximum length of @haystack.
2377 * @needle: the nul-terminated string to search for.
2379 * Searches the string @haystack for the last occurrence
2380 * of the string @needle, limiting the length of the search
2383 * Return value: a pointer to the found occurrence, or
2384 * %NULL if not found.
2387 g_strrstr_len (const gchar *haystack,
2388 gssize haystack_len,
2389 const gchar *needle)
2391 g_return_val_if_fail (haystack != NULL, NULL);
2392 g_return_val_if_fail (needle != NULL, NULL);
2394 if (haystack_len < 0)
2395 return g_strrstr (haystack, needle);
2398 gsize needle_len = strlen (needle);
2399 const gchar *haystack_max = haystack + haystack_len;
2400 const gchar *p = haystack;
2403 while (p < haystack_max && *p)
2406 if (p < haystack + needle_len)
2411 while (p >= haystack)
2413 for (i = 0; i < needle_len; i++)
2414 if (p[i] != needle[i])
2430 * @str: a nul-terminated string.
2431 * @suffix: the nul-terminated suffix to look for.
2433 * Looks whether the string @str ends with @suffix.
2435 * Return value: %TRUE if @str end with @suffix, %FALSE otherwise.
2440 g_str_has_suffix (const gchar *str,
2441 const gchar *suffix)
2446 g_return_val_if_fail (str != NULL, FALSE);
2447 g_return_val_if_fail (suffix != NULL, FALSE);
2449 str_len = strlen (str);
2450 suffix_len = strlen (suffix);
2452 if (str_len < suffix_len)
2455 return strcmp (str + str_len - suffix_len, suffix) == 0;
2460 * @str: a nul-terminated string.
2461 * @prefix: the nul-terminated prefix to look for.
2463 * Looks whether the string @str begins with @prefix.
2465 * Return value: %TRUE if @str begins with @prefix, %FALSE otherwise.
2470 g_str_has_prefix (const gchar *str,
2471 const gchar *prefix)
2476 g_return_val_if_fail (str != NULL, FALSE);
2477 g_return_val_if_fail (prefix != NULL, FALSE);
2479 str_len = strlen (str);
2480 prefix_len = strlen (prefix);
2482 if (str_len < prefix_len)
2485 return strncmp (str, prefix, prefix_len) == 0;