1 /* Replacements for routines missing on some systems.
2 Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
3 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free Software
6 This file is part of GNU Wget.
8 GNU Wget is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 GNU Wget is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with Wget. If not, see <http://www.gnu.org/licenses/>.
21 Additional permission under GNU GPL version 3 section 7
23 If you modify this program, or any covered work, by linking or
24 combining it with the OpenSSL project's OpenSSL library (or a
25 modified version of that library), containing parts covered by the
26 terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
27 grants you additional permission to convey the resulting work.
28 Corresponding Source for a non-source form of such a combination
29 shall include the source code for the parts of OpenSSL used as well
30 as that of the covered work. */
43 /* Some systems lack certain functions normally taken for granted.
44 For example, Windows doesn't have strptime, and some systems don't
45 have a usable fnmatch. This file should contain fallback
46 implementations of such missing functions. It should *not* define
47 new Wget-specific interfaces -- those should be placed in utils.c
50 /* strcasecmp and strncasecmp apparently originated with BSD 4.4.
51 SUSv3 seems to be the only standard out there (that I can find)
52 that requires their existence, so in theory there might be systems
53 still in use that lack them. Note that these don't get defined
54 under Windows because mswindows.h defines them to the equivalent
55 Windows functions stricmp and strnicmp. */
57 #ifndef HAVE_STRCASECMP
59 /* Compare S1 and S2, ignoring case, returning less than, equal to or
60 greater than zero if S1 is lexiographically less than,
61 equal to or greater than S2. */
63 strcasecmp (const char *s1, const char *s2)
65 register const unsigned char *p1 = (const unsigned char *) s1;
66 register const unsigned char *p2 = (const unsigned char *) s2;
74 c1 = c_tolower (*p1++);
75 c2 = c_tolower (*p2++);
83 #endif /* not HAVE_STRCASECMP */
85 #ifndef HAVE_STRNCASECMP
87 /* Compare no more than N characters of S1 and S2,
88 ignoring case, returning less than, equal to or
89 greater than zero if S1 is lexicographically less
90 than, equal to or greater than S2. */
92 strncasecmp (const char *s1, const char *s2, size_t n)
94 register const unsigned char *p1 = (const unsigned char *) s1;
95 register const unsigned char *p2 = (const unsigned char *) s2;
98 if (p1 == p2 || n == 0)
103 c1 = c_tolower (*p1++);
104 c2 = c_tolower (*p2++);
105 if (c1 == '\0' || c1 != c2)
111 #endif /* not HAVE_STRNCASECMP */
114 /* memrchr is a GNU extension. It is like the memchr function, except
115 that it searches backwards from the end of the n bytes pointed to
116 by s instead of forwards from the front. */
119 memrchr (const void *s, int c, size_t n)
122 const char *e = b + n;
130 /* strptime is required by POSIX, but it is missing from Windows,
131 which means we must keep a fallback implementation. It is
132 reportedly missing or broken on many older Unix systems as well, so
133 it's good to have around. */
135 #ifndef HAVE_STRPTIME
136 /* From GNU libc 2.1.3. */
137 /* Ulrich, thanks for helping me out with this! --hniksic */
139 /* strptime - Convert a string representation of time to a time value.
140 Copyright (C) 1996, 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
141 This file is part of the GNU C Library.
142 Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996. */
144 /* XXX This version of the implementation is not really complete.
145 Some of the fields cannot add information alone. But if seeing
146 some of them in the same format (such as year, week and weekday)
147 this is enough information for determining the date. */
150 # define __P(args) args
153 #if ! HAVE_LOCALTIME_R && ! defined localtime_r
155 # define localtime_r __localtime_r
157 /* Approximate localtime_r as best we can in its absence. */
158 # define localtime_r my_localtime_r
159 static struct tm *localtime_r __P ((const time_t *, struct tm *));
165 struct tm *l = localtime (t);
171 # endif /* ! _LIBC */
172 #endif /* ! HAVE_LOCALTIME_R && ! defined (localtime_r) */
175 #define match_char(ch1, ch2) if (ch1 != ch2) return NULL
176 #if defined __GNUC__ && __GNUC__ >= 2
177 # define match_string(cs1, s2) \
178 ({ size_t len = strlen (cs1); \
179 int result = strncasecmp ((cs1), (s2), len) == 0; \
180 if (result) (s2) += len; \
183 /* Oh come on. Get a reasonable compiler. */
184 # define match_string(cs1, s2) \
185 (strncasecmp ((cs1), (s2), strlen (cs1)) ? 0 : ((s2) += strlen (cs1), 1))
187 /* We intentionally do not use isdigit() for testing because this will
188 lead to problems with the wide character version. */
189 #define get_number(from, to, n) \
195 if (*rp < '0' || *rp > '9') \
199 val += *rp++ - '0'; \
200 } while (--__n > 0 && val * 10 <= to && *rp >= '0' && *rp <= '9'); \
201 if (val < from || val > to) \
205 /* Added check for __GNUC__ extensions here for Wget. --abbotti */
206 # if defined __GNUC__ && __GNUC__ >= 2
207 # define get_alt_number(from, to, n) \
209 __label__ do_normal; \
210 if (*decided != raw) \
212 const char *alts = _NL_CURRENT (LC_TIME, ALT_DIGITS); \
220 while (*alts != '\0') \
222 size_t len = strlen (alts); \
223 if (strncasecmp (alts, rp, len) == 0) \
230 if (*decided == not && ! any) \
232 /* If we haven't read anything it's an error. */ \
235 /* Correct the premature multiplication. */ \
241 } while (--__n > 0 && val * 10 <= to); \
242 if (val < from || val > to) \
248 get_number (from, to, n); \
253 # define get_alt_number(from, to, n) \
255 if (*decided != raw) \
257 const char *alts = _NL_CURRENT (LC_TIME, ALT_DIGITS); \
265 while (*alts != '\0') \
267 size_t len = strlen (alts); \
268 if (strncasecmp (alts, rp, len) == 0) \
275 if (*decided == not && ! any) \
277 /* If we haven't read anything it's an error. */ \
280 /* Correct the premature multiplication. */ \
286 } while (--__n > 0 && val * 10 <= to); \
287 if (val < from || val > to) \
293 get_number (from, to, n); \
296 # endif /* defined __GNUC__ && __GNUC__ >= 2 */
298 # define get_alt_number(from, to, n) \
299 /* We don't have the alternate representation. */ \
300 get_number(from, to, n)
302 #define recursive(new_fmt) \
303 (*(new_fmt) != '\0' \
304 && (rp = strptime_internal (rp, (new_fmt), tm, decided)) != NULL)
308 /* This is defined in locale/C-time.c in the GNU libc. */
309 extern const struct locale_data _nl_C_LC_TIME;
310 extern const unsigned short int __mon_yday[2][13];
312 # define weekday_name (&_nl_C_LC_TIME.values[_NL_ITEM_INDEX (DAY_1)].string)
313 # define ab_weekday_name \
314 (&_nl_C_LC_TIME.values[_NL_ITEM_INDEX (ABDAY_1)].string)
315 # define month_name (&_nl_C_LC_TIME.values[_NL_ITEM_INDEX (MON_1)].string)
316 # define ab_month_name (&_nl_C_LC_TIME.values[_NL_ITEM_INDEX (ABMON_1)].string)
317 # define HERE_D_T_FMT (_nl_C_LC_TIME.values[_NL_ITEM_INDEX (D_T_FMT)].string)
318 # define HERE_D_FMT (_nl_C_LC_TIME.values[_NL_ITEM_INDEX (D_FMT)].string)
319 # define HERE_AM_STR (_nl_C_LC_TIME.values[_NL_ITEM_INDEX (AM_STR)].string)
320 # define HERE_PM_STR (_nl_C_LC_TIME.values[_NL_ITEM_INDEX (PM_STR)].string)
321 # define HERE_T_FMT_AMPM \
322 (_nl_C_LC_TIME.values[_NL_ITEM_INDEX (T_FMT_AMPM)].string)
323 # define HERE_T_FMT (_nl_C_LC_TIME.values[_NL_ITEM_INDEX (T_FMT)].string)
325 # define strncasecmp(s1, s2, n) __strncasecmp (s1, s2, n)
327 static char const weekday_name[][10] =
329 "Sunday", "Monday", "Tuesday", "Wednesday",
330 "Thursday", "Friday", "Saturday"
332 static char const ab_weekday_name[][4] =
334 "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
336 static char const month_name[][10] =
338 "January", "February", "March", "April", "May", "June",
339 "July", "August", "September", "October", "November", "December"
341 static char const ab_month_name[][4] =
343 "Jan", "Feb", "Mar", "Apr", "May", "Jun",
344 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
346 # define HERE_D_T_FMT "%a %b %e %H:%M:%S %Y"
347 # define HERE_D_FMT "%m/%d/%y"
348 # define HERE_AM_STR "AM"
349 # define HERE_PM_STR "PM"
350 # define HERE_T_FMT_AMPM "%I:%M:%S %p"
351 # define HERE_T_FMT "%H:%M:%S"
353 const unsigned short int __mon_yday[2][13];
354 # ifndef NEED_MON_YDAY
355 # define NEED_MON_YDAY
359 /* Status of lookup: do we use the locale data or the raw data? */
360 enum locale_status { not, loc, raw };
364 /* Nonzero if YEAR is a leap year (every 4 years,
365 except every 100th isn't, and every 400th is). */
366 # define __isleap(year) \
367 ((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0))
370 /* Compute the day of the week. */
372 day_of_the_week (struct tm *tm)
374 /* We know that January 1st 1970 was a Thursday (= 4). Compute the
375 the difference between this data in the one on TM and so determine
377 int corr_year = 1900 + tm->tm_year - (tm->tm_mon < 2);
379 + (365 * (tm->tm_year - 70))
381 - ((corr_year / 4) / 25) + ((corr_year / 4) % 25 < 0)
382 + (((corr_year / 4) / 25) / 4)
383 + __mon_yday[0][tm->tm_mon]
385 tm->tm_wday = ((wday % 7) + 7) % 7;
388 /* Compute the day of the year. */
390 day_of_the_year (struct tm *tm)
392 tm->tm_yday = (__mon_yday[__isleap (1900 + tm->tm_year)][tm->tm_mon]
393 + (tm->tm_mday - 1));
400 strptime_internal __P ((const char *buf, const char *format, struct tm *tm,
401 enum locale_status *decided));
407 strptime_internal (rp, fmt, tm, decided)
411 enum locale_status *decided;
414 const char *rp_backup;
419 int century, want_century;
420 int have_wday, want_xday;
422 int have_mon, have_mday;
427 have_wday = want_xday = have_yday = have_mon = have_mday = 0;
431 /* A white space in the format string matches 0 more or white
432 space in the input string. */
433 if (c_isspace (*fmt))
435 while (c_isspace (*rp))
441 /* Any character but `%' must be matched by the same character
442 in the iput string. */
445 match_char (*fmt++, *rp++);
451 /* We need this for handling the `E' modifier. */
456 /* Make back up of current processing pointer. */
463 /* Match the `%' character itself. */
464 match_char ('%', *rp++);
468 /* Match day of week. */
469 for (cnt = 0; cnt < 7; ++cnt)
474 if (match_string (_NL_CURRENT (LC_TIME, DAY_1 + cnt), rp))
477 && strcmp (_NL_CURRENT (LC_TIME, DAY_1 + cnt),
482 if (match_string (_NL_CURRENT (LC_TIME, ABDAY_1 + cnt), rp))
485 && strcmp (_NL_CURRENT (LC_TIME, ABDAY_1 + cnt),
486 ab_weekday_name[cnt]))
493 && (match_string (weekday_name[cnt], rp)
494 || match_string (ab_weekday_name[cnt], rp)))
501 /* Does not match a weekday name. */
509 /* Match month name. */
510 for (cnt = 0; cnt < 12; ++cnt)
515 if (match_string (_NL_CURRENT (LC_TIME, MON_1 + cnt), rp))
518 && strcmp (_NL_CURRENT (LC_TIME, MON_1 + cnt),
523 if (match_string (_NL_CURRENT (LC_TIME, ABMON_1 + cnt), rp))
526 && strcmp (_NL_CURRENT (LC_TIME, ABMON_1 + cnt),
533 if (match_string (month_name[cnt], rp)
534 || match_string (ab_month_name[cnt], rp))
541 /* Does not match a month name. */
547 /* Match locale's date and time format. */
551 if (!recursive (_NL_CURRENT (LC_TIME, D_T_FMT)))
560 if (*decided == not &&
561 strcmp (_NL_CURRENT (LC_TIME, D_T_FMT), HERE_D_T_FMT))
569 if (!recursive (HERE_D_T_FMT))
574 /* Match century number. */
575 get_number (0, 99, 2);
581 /* Match day of month. */
582 get_number (1, 31, 2);
588 if (!recursive ("%Y-%m-%d"))
596 if (!recursive (_NL_CURRENT (LC_TIME, D_FMT)))
606 && strcmp (_NL_CURRENT (LC_TIME, D_FMT), HERE_D_FMT))
616 /* Match standard day format. */
617 if (!recursive (HERE_D_FMT))
623 /* Match hour in 24-hour clock. */
624 get_number (0, 23, 2);
629 /* Match hour in 12-hour clock. */
630 get_number (1, 12, 2);
631 tm->tm_hour = val % 12;
635 /* Match day number of year. */
636 get_number (1, 366, 3);
637 tm->tm_yday = val - 1;
641 /* Match number of month. */
642 get_number (1, 12, 2);
643 tm->tm_mon = val - 1;
649 get_number (0, 59, 2);
654 /* Match any white space. */
655 while (c_isspace (*rp))
659 /* Match locale's equivalent of AM/PM. */
663 if (match_string (_NL_CURRENT (LC_TIME, AM_STR), rp))
665 if (strcmp (_NL_CURRENT (LC_TIME, AM_STR), HERE_AM_STR))
669 if (match_string (_NL_CURRENT (LC_TIME, PM_STR), rp))
671 if (strcmp (_NL_CURRENT (LC_TIME, PM_STR), HERE_PM_STR))
679 if (!match_string (HERE_AM_STR, rp))
681 if (match_string (HERE_PM_STR, rp))
691 if (!recursive (_NL_CURRENT (LC_TIME, T_FMT_AMPM)))
700 if (*decided == not &&
701 strcmp (_NL_CURRENT (LC_TIME, T_FMT_AMPM),
709 if (!recursive (HERE_T_FMT_AMPM))
713 if (!recursive ("%H:%M"))
718 /* The number of seconds may be very high so we cannot use
719 the `get_number' macro. Instead read the number
720 character for character and construct the result while
723 if (*rp < '0' || *rp > '9')
724 /* We need at least one digit. */
732 while (*rp >= '0' && *rp <= '9');
734 if (localtime_r (&secs, tm) == NULL)
735 /* Error in function. */
740 get_number (0, 61, 2);
747 if (!recursive (_NL_CURRENT (LC_TIME, T_FMT)))
756 if (strcmp (_NL_CURRENT (LC_TIME, T_FMT), HERE_T_FMT))
765 if (!recursive (HERE_T_FMT))
769 get_number (1, 7, 1);
770 tm->tm_wday = val % 7;
774 get_number (0, 99, 2);
775 /* XXX This cannot determine any field in TM. */
778 if (*rp < '0' || *rp > '9')
780 /* XXX Ignore the number since we would need some more
781 information to compute a real date. */
784 while (*rp >= '0' && *rp <= '9');
789 get_number (0, 53, 2);
790 /* XXX This cannot determine any field in TM without some
794 /* Match number of weekday. */
795 get_number (0, 6, 1);
800 /* Match year within century. */
801 get_number (0, 99, 2);
802 /* The "Year 2000: The Millennium Rollover" paper suggests that
803 values in the range 69-99 refer to the twentieth century. */
804 tm->tm_year = val >= 69 ? val : val + 100;
805 /* Indicate that we want to use the century, if specified. */
810 /* Match year including century number. */
811 get_number (0, 9999, 4);
812 tm->tm_year = val - 1900;
817 /* XXX How to handle this? */
824 /* Match locale's alternate date and time format. */
827 const char *fmt = _NL_CURRENT (LC_TIME, ERA_D_T_FMT);
830 fmt = _NL_CURRENT (LC_TIME, D_T_FMT);
832 if (!recursive (fmt))
841 if (strcmp (fmt, HERE_D_T_FMT))
848 /* The C locale has no era information, so use the
849 normal representation. */
850 if (!recursive (HERE_D_T_FMT))
857 /* Match name of base year in locale's alternate
859 /* XXX This is currently not implemented. It should
860 use the value _NL_CURRENT (LC_TIME, ERA). */
865 const char *fmt = _NL_CURRENT (LC_TIME, ERA_D_FMT);
868 fmt = _NL_CURRENT (LC_TIME, D_FMT);
870 if (!recursive (fmt))
879 if (strcmp (fmt, HERE_D_FMT))
885 if (!recursive (HERE_D_FMT))
891 const char *fmt = _NL_CURRENT (LC_TIME, ERA_T_FMT);
894 fmt = _NL_CURRENT (LC_TIME, T_FMT);
896 if (!recursive (fmt))
905 if (strcmp (fmt, HERE_T_FMT))
911 if (!recursive (HERE_T_FMT))
919 /* We have no information about the era format. Just use
920 the normal format. */
921 if (*fmt != 'c' && *fmt != 'C' && *fmt != 'y' && *fmt != 'Y'
922 && *fmt != 'x' && *fmt != 'X')
923 /* This is an illegal format. */
933 /* Match day of month using alternate numeric symbols. */
934 get_alt_number (1, 31, 2);
940 /* Match hour in 24-hour clock using alternate numeric
942 get_alt_number (0, 23, 2);
947 /* Match hour in 12-hour clock using alternate numeric
949 get_alt_number (1, 12, 2);
950 tm->tm_hour = val - 1;
954 /* Match month using alternate numeric symbols. */
955 get_alt_number (1, 12, 2);
956 tm->tm_mon = val - 1;
961 /* Match minutes using alternate numeric symbols. */
962 get_alt_number (0, 59, 2);
966 /* Match seconds using alternate numeric symbols. */
967 get_alt_number (0, 61, 2);
973 get_alt_number (0, 53, 2);
974 /* XXX This cannot determine any field in TM without
975 further information. */
978 /* Match number of weekday using alternate numeric symbols. */
979 get_alt_number (0, 6, 1);
984 /* Match year within century using alternate numeric symbols. */
985 get_alt_number (0, 99, 2);
986 tm->tm_year = val >= 69 ? val : val + 100;
1004 tm->tm_year = tm->tm_year % 100 + (century - 19) * 100;
1006 /* Only the century, but not the year. Strange, but so be it. */
1007 tm->tm_year = (century - 19) * 100;
1010 if (want_xday && !have_wday) {
1011 if ( !(have_mon && have_mday) && have_yday) {
1012 /* we don't have tm_mon and/or tm_mday, compute them */
1014 while (__mon_yday[__isleap(1900 + tm->tm_year)][t_mon] <= tm->tm_yday)
1017 tm->tm_mon = t_mon - 1;
1019 tm->tm_mday = tm->tm_yday - __mon_yday[__isleap(1900 + tm->tm_year)][t_mon - 1] + 1;
1021 day_of_the_week (tm);
1023 if (want_xday && !have_yday)
1024 day_of_the_year (tm);
1031 strptime (buf, format, tm)
1036 enum locale_status decided;
1042 return strptime_internal (buf, format, tm, &decided);
1044 #endif /* not HAVE_STRPTIME */
1046 #ifdef NEED_MON_YDAY
1047 const unsigned short int __mon_yday[2][13] =
1050 { 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365 },
1052 { 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366 }
1056 /* fnmatch is required by POSIX, but we include an implementation for
1057 the sake of systems that don't have it, most notably Windows. Some
1058 systems do have fnmatch, but Apache's installation process installs
1059 its own fnmatch.h (incompatible with the system one!) in a system
1060 include directory, effectively rendering fnmatch unusable. This
1061 has been fixed with Apache 2, where fnmatch has been moved to apr
1062 and given a prefix, but many systems out there are still (as of
1063 this writing in 2005) broken and we must cater to them.
1065 Additionally, according to some conventional wisdom, many
1066 historical implementations of fnmatch are buggy and unreliable. If
1067 yours is such, undefine SYSTEM_FNMATCH in sysdep.h and tell us
1070 #ifndef SYSTEM_FNMATCH
1072 #define __FNM_FLAGS (FNM_PATHNAME | FNM_NOESCAPE | FNM_PERIOD)
1074 /* Match STRING against the filename pattern PATTERN, returning zero
1075 if it matches, FNM_NOMATCH if not. This implementation comes from
1076 an earlier version of GNU Bash. (It doesn't make sense to update
1077 it with a newer version because those versions add a lot of
1078 features Wget doesn't use or care about.) */
1081 fnmatch (const char *pattern, const char *string, int flags)
1083 register const char *p = pattern, *n = string;
1086 if ((flags & ~__FNM_FLAGS) != 0)
1092 while ((c = *p++) != '\0')
1098 return (FNM_NOMATCH);
1099 else if ((flags & FNM_PATHNAME) && *n == '/')
1100 return (FNM_NOMATCH);
1101 else if ((flags & FNM_PERIOD) && *n == '.' &&
1102 (n == string || ((flags & FNM_PATHNAME) && n[-1] == '/')))
1103 return (FNM_NOMATCH);
1107 if (!(flags & FNM_NOESCAPE))
1110 return (FNM_NOMATCH);
1114 if ((flags & FNM_PERIOD) && *n == '.' &&
1115 (n == string || ((flags & FNM_PATHNAME) && n[-1] == '/')))
1116 return (FNM_NOMATCH);
1118 for (c = *p++; c == '?' || c == '*'; c = *p++, ++n)
1119 if (((flags & FNM_PATHNAME) && *n == '/') ||
1120 (c == '?' && *n == '\0'))
1121 return (FNM_NOMATCH);
1127 char c1 = (!(flags & FNM_NOESCAPE) && c == '\\') ? *p : c;
1128 for (--p; *n != '\0'; ++n)
1129 if ((c == '[' || *n == c1) &&
1130 fnmatch (p, n, flags & ~FNM_PERIOD) == 0)
1132 return (FNM_NOMATCH);
1137 /* Nonzero if the sense of the character class is
1142 return (FNM_NOMATCH);
1144 if ((flags & FNM_PERIOD) && *n == '.' &&
1145 (n == string || ((flags & FNM_PATHNAME) && n[-1] == '/')))
1146 return (FNM_NOMATCH);
1148 /* Make sure there is a closing `]'. If there isn't,
1149 the `[' is just a character to be matched. */
1151 register const char *np;
1153 for (np = p; np && *np && *np != ']'; np++)
1159 return (FNM_NOMATCH);
1164 not = (*p == '!' || *p == '^');
1171 register char cstart = c, cend = c;
1173 if (!(flags & FNM_NOESCAPE) && c == '\\')
1174 cstart = cend = *p++;
1177 /* [ (unterminated) loses. */
1178 return (FNM_NOMATCH);
1182 if ((flags & FNM_PATHNAME) && c == '/')
1183 /* [/] can never match. */
1184 return (FNM_NOMATCH);
1186 if (c == '-' && *p != ']')
1189 if (!(flags & FNM_NOESCAPE) && cend == '\\')
1192 return (FNM_NOMATCH);
1196 if (*n >= cstart && *n <= cend)
1203 return (FNM_NOMATCH);
1209 /* Skip the rest of the [...] that already matched. */
1213 /* [... (unterminated) loses. */
1214 return (FNM_NOMATCH);
1217 if (!(flags & FNM_NOESCAPE) && c == '\\')
1218 /* 1003.2d11 is unclear if this is right. %%% */
1222 return (FNM_NOMATCH);
1228 return (FNM_NOMATCH);
1237 return (FNM_NOMATCH);
1240 #endif /* not SYSTEM_FNMATCH */
1243 /* timegm is a GNU extension, but lately also available on *BSD
1244 systems and possibly elsewhere. */
1246 /* True if YEAR is a leap year. */
1247 #define ISLEAP(year) \
1248 ((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0))
1250 /* Number of leap years in the range [y1, y2). */
1251 #define LEAPYEARS(y1, y2) \
1252 ((y2-1)/4 - (y1-1)/4) - ((y2-1)/100 - (y1-1)/100) + ((y2-1)/400 - (y1-1)/400)
1254 /* Inverse of gmtime: converts struct tm to time_t, assuming the data
1255 in tm is UTC rather than local timezone. This implementation
1256 returns the number of seconds elapsed since midnight 1970-01-01,
1257 converted to time_t. */
1260 timegm (struct tm *t)
1262 static const unsigned short int month_to_days[][13] = {
1263 { 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334 }, /* normal */
1264 { 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335 } /* leap */
1266 const int year = 1900 + t->tm_year;
1267 unsigned long secs; /* until 2106-02-07 for 32-bit unsigned long */
1273 days = 365 * (year - 1970);
1274 /* Take into account leap years between 1970 and YEAR, not counting
1276 days += LEAPYEARS (1970, year);
1277 if (t->tm_mon < 0 || t->tm_mon >= 12)
1279 days += month_to_days[ISLEAP (year)][t->tm_mon];
1280 days += t->tm_mday - 1;
1282 secs = days * 86400 + t->tm_hour * 3600 + t->tm_min * 60 + t->tm_sec;
1283 return (time_t) secs;
1285 #endif /* HAVE_TIMEGM */
1288 /* strtoll is required by C99 and used by Wget only on systems with
1289 LFS. Unfortunately, some systems have LFS, but no strtoll or
1290 equivalent. These include HPUX 11.0 and Windows.
1292 We use #ifdef NEED_STRTOLL instead of #ifndef HAVE_STRTOLL because
1293 of the systems which have a suitable replacement (e.g. _strtoi64 on
1294 Windows), on which Wget's str_to_wgint is instructed to use that
1298 char_value (char c, int base)
1303 if ('0' <= c && c <= '9')
1305 else if ('a' <= c && c <= 'z')
1306 value = c - 'a' + 10;
1307 else if ('A' <= c && c <= 'Z')
1308 value = c - 'A' + 10;
1316 #define STRTOLL_MAX TYPE_MAXIMUM (strtoll_type)
1317 /* This definition assumes two's complement arithmetic */
1318 #define STRTOLL_MIN (-STRTOLL_MAX - 1)
1320 /* Like a%b, but always returns a positive number when A is negative.
1321 (C doesn't guarantee the sign of the result.) */
1322 #define MOD(a, b) ((strtoll_type) -1 % 2 == 1 ? (a) % (b) : - ((a) % (b)))
1324 /* A strtoll-like replacement for systems that have an integral type
1325 larger than long but don't supply strtoll. This implementation
1326 makes no assumptions about the size of strtoll_type. */
1329 strtoll (const char *nptr, char **endptr, int base)
1331 strtoll_type result = 0;
1334 if (base != 0 && (base < 2 || base > 36))
1340 while (*nptr == ' ' || *nptr == '\t')
1347 else if (*nptr == '+')
1355 /* If BASE is 0, determine the real base based on the beginning on
1356 the number; octal numbers begin with "0", hexadecimal with "0x",
1357 and the others are considered octal. */
1360 if ((base == 0 || base == 16)
1362 (*(nptr + 1) == 'x' || *(nptr + 1) == 'X'))
1366 /* "0x" must be followed by at least one hex char. If not,
1367 return 0 and place ENDPTR on 'x'. */
1368 if (!c_isxdigit (*nptr))
1382 /* Parse positive number, checking for overflow. */
1384 /* Overflow watermark. If RESULT exceeds it, overflow occurs on
1385 this digit. If result==WATERMARK, current digit may not
1386 exceed the last digit of maximum value. */
1387 const strtoll_type WATERMARK = STRTOLL_MAX / base;
1388 for (; (digit = char_value (*nptr, base)) != -1; ++nptr)
1390 if (result > WATERMARK
1391 || (result == WATERMARK && digit > STRTOLL_MAX % base))
1393 result = STRTOLL_MAX;
1397 result = base * result + digit;
1402 /* Parse negative number, checking for underflow. */
1404 const strtoll_type WATERMARK = STRTOLL_MIN / base;
1405 for (; (digit = char_value (*nptr, base)) != -1; ++nptr)
1407 if (result < WATERMARK
1408 || (result == WATERMARK && digit > MOD (STRTOLL_MIN, base)))
1410 result = STRTOLL_MIN;
1414 result = base * result - digit;
1419 *endptr = (char *) nptr;
1427 #endif /* NEED_STRTOLL */