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 Free Software Foundation,
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. */
45 /* Some systems lack certain functions normally taken for granted.
46 For example, Windows doesn't have strptime, and some systems don't
47 have a usable fnmatch. This file should contain fallback
48 implementations of such missing functions. It should *not* define
49 new Wget-specific interfaces -- those should be placed in utils.c
52 /* strcasecmp and strncasecmp apparently originated with BSD 4.4.
53 SUSv3 seems to be the only standard out there (that I can find)
54 that requires their existence, so in theory there might be systems
55 still in use that lack them. Note that these don't get defined
56 under Windows because mswindows.h defines them to the equivalent
57 Windows functions stricmp and strnicmp. */
59 #ifndef HAVE_STRCASECMP
61 /* Compare S1 and S2, ignoring case, returning less than, equal to or
62 greater than zero if S1 is lexiographically less than,
63 equal to or greater than S2. */
65 strcasecmp (const char *s1, const char *s2)
67 register const unsigned char *p1 = (const unsigned char *) s1;
68 register const unsigned char *p2 = (const unsigned char *) s2;
76 c1 = c_tolower (*p1++);
77 c2 = c_tolower (*p2++);
85 #endif /* not HAVE_STRCASECMP */
87 #ifndef HAVE_STRNCASECMP
89 /* Compare no more than N characters of S1 and S2,
90 ignoring case, returning less than, equal to or
91 greater than zero if S1 is lexicographically less
92 than, equal to or greater than S2. */
94 strncasecmp (const char *s1, const char *s2, size_t n)
96 register const unsigned char *p1 = (const unsigned char *) s1;
97 register const unsigned char *p2 = (const unsigned char *) s2;
100 if (p1 == p2 || n == 0)
105 c1 = c_tolower (*p1++);
106 c2 = c_tolower (*p2++);
107 if (c1 == '\0' || c1 != c2)
113 #endif /* not HAVE_STRNCASECMP */
116 /* memrchr is a GNU extension. It is like the memchr function, except
117 that it searches backwards from the end of the n bytes pointed to
118 by s instead of forwards from the front. */
121 memrchr (const void *s, int c, size_t n)
124 const char *e = b + n;
132 /* strptime is required by POSIX, but it is missing from Windows,
133 which means we must keep a fallback implementation. It is
134 reportedly missing or broken on many older Unix systems as well, so
135 it's good to have around. */
137 #ifndef HAVE_STRPTIME
138 /* From GNU libc 2.1.3. */
139 /* Ulrich, thanks for helping me out with this! --hniksic */
141 /* strptime - Convert a string representation of time to a time value.
142 Copyright (C) 1996, 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
143 This file is part of the GNU C Library.
144 Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996. */
146 /* XXX This version of the implementation is not really complete.
147 Some of the fields cannot add information alone. But if seeing
148 some of them in the same format (such as year, week and weekday)
149 this is enough information for determining the date. */
152 # define __P(args) args
155 #if ! HAVE_LOCALTIME_R && ! defined localtime_r
157 # define localtime_r __localtime_r
159 /* Approximate localtime_r as best we can in its absence. */
160 # define localtime_r my_localtime_r
161 static struct tm *localtime_r __P ((const time_t *, struct tm *));
167 struct tm *l = localtime (t);
173 # endif /* ! _LIBC */
174 #endif /* ! HAVE_LOCALTIME_R && ! defined (localtime_r) */
177 #define match_char(ch1, ch2) if (ch1 != ch2) return NULL
178 #if defined __GNUC__ && __GNUC__ >= 2
179 # define match_string(cs1, s2) \
180 ({ size_t len = strlen (cs1); \
181 int result = strncasecmp ((cs1), (s2), len) == 0; \
182 if (result) (s2) += len; \
185 /* Oh come on. Get a reasonable compiler. */
186 # define match_string(cs1, s2) \
187 (strncasecmp ((cs1), (s2), strlen (cs1)) ? 0 : ((s2) += strlen (cs1), 1))
189 /* We intentionally do not use isdigit() for testing because this will
190 lead to problems with the wide character version. */
191 #define get_number(from, to, n) \
197 if (*rp < '0' || *rp > '9') \
201 val += *rp++ - '0'; \
202 } while (--__n > 0 && val * 10 <= to && *rp >= '0' && *rp <= '9'); \
203 if (val < from || val > to) \
207 /* Added check for __GNUC__ extensions here for Wget. --abbotti */
208 # if defined __GNUC__ && __GNUC__ >= 2
209 # define get_alt_number(from, to, n) \
211 __label__ do_normal; \
212 if (*decided != raw) \
214 const char *alts = _NL_CURRENT (LC_TIME, ALT_DIGITS); \
222 while (*alts != '\0') \
224 size_t len = strlen (alts); \
225 if (strncasecmp (alts, rp, len) == 0) \
232 if (*decided == not && ! any) \
234 /* If we haven't read anything it's an error. */ \
237 /* Correct the premature multiplication. */ \
243 } while (--__n > 0 && val * 10 <= to); \
244 if (val < from || val > to) \
250 get_number (from, to, n); \
255 # define get_alt_number(from, to, n) \
257 if (*decided != raw) \
259 const char *alts = _NL_CURRENT (LC_TIME, ALT_DIGITS); \
267 while (*alts != '\0') \
269 size_t len = strlen (alts); \
270 if (strncasecmp (alts, rp, len) == 0) \
277 if (*decided == not && ! any) \
279 /* If we haven't read anything it's an error. */ \
282 /* Correct the premature multiplication. */ \
288 } while (--__n > 0 && val * 10 <= to); \
289 if (val < from || val > to) \
295 get_number (from, to, n); \
298 # endif /* defined __GNUC__ && __GNUC__ >= 2 */
300 # define get_alt_number(from, to, n) \
301 /* We don't have the alternate representation. */ \
302 get_number(from, to, n)
304 #define recursive(new_fmt) \
305 (*(new_fmt) != '\0' \
306 && (rp = strptime_internal (rp, (new_fmt), tm, decided)) != NULL)
310 /* This is defined in locale/C-time.c in the GNU libc. */
311 extern const struct locale_data _nl_C_LC_TIME;
312 extern const unsigned short int __mon_yday[2][13];
314 # define weekday_name (&_nl_C_LC_TIME.values[_NL_ITEM_INDEX (DAY_1)].string)
315 # define ab_weekday_name \
316 (&_nl_C_LC_TIME.values[_NL_ITEM_INDEX (ABDAY_1)].string)
317 # define month_name (&_nl_C_LC_TIME.values[_NL_ITEM_INDEX (MON_1)].string)
318 # define ab_month_name (&_nl_C_LC_TIME.values[_NL_ITEM_INDEX (ABMON_1)].string)
319 # define HERE_D_T_FMT (_nl_C_LC_TIME.values[_NL_ITEM_INDEX (D_T_FMT)].string)
320 # define HERE_D_FMT (_nl_C_LC_TIME.values[_NL_ITEM_INDEX (D_FMT)].string)
321 # define HERE_AM_STR (_nl_C_LC_TIME.values[_NL_ITEM_INDEX (AM_STR)].string)
322 # define HERE_PM_STR (_nl_C_LC_TIME.values[_NL_ITEM_INDEX (PM_STR)].string)
323 # define HERE_T_FMT_AMPM \
324 (_nl_C_LC_TIME.values[_NL_ITEM_INDEX (T_FMT_AMPM)].string)
325 # define HERE_T_FMT (_nl_C_LC_TIME.values[_NL_ITEM_INDEX (T_FMT)].string)
327 # define strncasecmp(s1, s2, n) __strncasecmp (s1, s2, n)
329 static char const weekday_name[][10] =
331 "Sunday", "Monday", "Tuesday", "Wednesday",
332 "Thursday", "Friday", "Saturday"
334 static char const ab_weekday_name[][4] =
336 "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
338 static char const month_name[][10] =
340 "January", "February", "March", "April", "May", "June",
341 "July", "August", "September", "October", "November", "December"
343 static char const ab_month_name[][4] =
345 "Jan", "Feb", "Mar", "Apr", "May", "Jun",
346 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
348 # define HERE_D_T_FMT "%a %b %e %H:%M:%S %Y"
349 # define HERE_D_FMT "%m/%d/%y"
350 # define HERE_AM_STR "AM"
351 # define HERE_PM_STR "PM"
352 # define HERE_T_FMT_AMPM "%I:%M:%S %p"
353 # define HERE_T_FMT "%H:%M:%S"
355 const unsigned short int __mon_yday[2][13];
356 # ifndef NEED_MON_YDAY
357 # define NEED_MON_YDAY
361 /* Status of lookup: do we use the locale data or the raw data? */
362 enum locale_status { not, loc, raw };
366 /* Nonzero if YEAR is a leap year (every 4 years,
367 except every 100th isn't, and every 400th is). */
368 # define __isleap(year) \
369 ((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0))
372 /* Compute the day of the week. */
374 day_of_the_week (struct tm *tm)
376 /* We know that January 1st 1970 was a Thursday (= 4). Compute the
377 the difference between this data in the one on TM and so determine
379 int corr_year = 1900 + tm->tm_year - (tm->tm_mon < 2);
381 + (365 * (tm->tm_year - 70))
383 - ((corr_year / 4) / 25) + ((corr_year / 4) % 25 < 0)
384 + (((corr_year / 4) / 25) / 4)
385 + __mon_yday[0][tm->tm_mon]
387 tm->tm_wday = ((wday % 7) + 7) % 7;
390 /* Compute the day of the year. */
392 day_of_the_year (struct tm *tm)
394 tm->tm_yday = (__mon_yday[__isleap (1900 + tm->tm_year)][tm->tm_mon]
395 + (tm->tm_mday - 1));
402 strptime_internal __P ((const char *buf, const char *format, struct tm *tm,
403 enum locale_status *decided));
409 strptime_internal (rp, fmt, tm, decided)
413 enum locale_status *decided;
416 const char *rp_backup;
421 int century, want_century;
422 int have_wday, want_xday;
424 int have_mon, have_mday;
429 have_wday = want_xday = have_yday = have_mon = have_mday = 0;
433 /* A white space in the format string matches 0 more or white
434 space in the input string. */
435 if (c_isspace (*fmt))
437 while (c_isspace (*rp))
443 /* Any character but `%' must be matched by the same character
444 in the iput string. */
447 match_char (*fmt++, *rp++);
453 /* We need this for handling the `E' modifier. */
458 /* Make back up of current processing pointer. */
465 /* Match the `%' character itself. */
466 match_char ('%', *rp++);
470 /* Match day of week. */
471 for (cnt = 0; cnt < 7; ++cnt)
476 if (match_string (_NL_CURRENT (LC_TIME, DAY_1 + cnt), rp))
479 && strcmp (_NL_CURRENT (LC_TIME, DAY_1 + cnt),
484 if (match_string (_NL_CURRENT (LC_TIME, ABDAY_1 + cnt), rp))
487 && strcmp (_NL_CURRENT (LC_TIME, ABDAY_1 + cnt),
488 ab_weekday_name[cnt]))
495 && (match_string (weekday_name[cnt], rp)
496 || match_string (ab_weekday_name[cnt], rp)))
503 /* Does not match a weekday name. */
511 /* Match month name. */
512 for (cnt = 0; cnt < 12; ++cnt)
517 if (match_string (_NL_CURRENT (LC_TIME, MON_1 + cnt), rp))
520 && strcmp (_NL_CURRENT (LC_TIME, MON_1 + cnt),
525 if (match_string (_NL_CURRENT (LC_TIME, ABMON_1 + cnt), rp))
528 && strcmp (_NL_CURRENT (LC_TIME, ABMON_1 + cnt),
535 if (match_string (month_name[cnt], rp)
536 || match_string (ab_month_name[cnt], rp))
543 /* Does not match a month name. */
549 /* Match locale's date and time format. */
553 if (!recursive (_NL_CURRENT (LC_TIME, D_T_FMT)))
562 if (*decided == not &&
563 strcmp (_NL_CURRENT (LC_TIME, D_T_FMT), HERE_D_T_FMT))
571 if (!recursive (HERE_D_T_FMT))
576 /* Match century number. */
577 get_number (0, 99, 2);
583 /* Match day of month. */
584 get_number (1, 31, 2);
590 if (!recursive ("%Y-%m-%d"))
598 if (!recursive (_NL_CURRENT (LC_TIME, D_FMT)))
608 && strcmp (_NL_CURRENT (LC_TIME, D_FMT), HERE_D_FMT))
618 /* Match standard day format. */
619 if (!recursive (HERE_D_FMT))
625 /* Match hour in 24-hour clock. */
626 get_number (0, 23, 2);
631 /* Match hour in 12-hour clock. */
632 get_number (1, 12, 2);
633 tm->tm_hour = val % 12;
637 /* Match day number of year. */
638 get_number (1, 366, 3);
639 tm->tm_yday = val - 1;
643 /* Match number of month. */
644 get_number (1, 12, 2);
645 tm->tm_mon = val - 1;
651 get_number (0, 59, 2);
656 /* Match any white space. */
657 while (c_isspace (*rp))
661 /* Match locale's equivalent of AM/PM. */
665 if (match_string (_NL_CURRENT (LC_TIME, AM_STR), rp))
667 if (strcmp (_NL_CURRENT (LC_TIME, AM_STR), HERE_AM_STR))
671 if (match_string (_NL_CURRENT (LC_TIME, PM_STR), rp))
673 if (strcmp (_NL_CURRENT (LC_TIME, PM_STR), HERE_PM_STR))
681 if (!match_string (HERE_AM_STR, rp))
683 if (match_string (HERE_PM_STR, rp))
693 if (!recursive (_NL_CURRENT (LC_TIME, T_FMT_AMPM)))
702 if (*decided == not &&
703 strcmp (_NL_CURRENT (LC_TIME, T_FMT_AMPM),
711 if (!recursive (HERE_T_FMT_AMPM))
715 if (!recursive ("%H:%M"))
720 /* The number of seconds may be very high so we cannot use
721 the `get_number' macro. Instead read the number
722 character for character and construct the result while
725 if (*rp < '0' || *rp > '9')
726 /* We need at least one digit. */
734 while (*rp >= '0' && *rp <= '9');
736 if (localtime_r (&secs, tm) == NULL)
737 /* Error in function. */
742 get_number (0, 61, 2);
749 if (!recursive (_NL_CURRENT (LC_TIME, T_FMT)))
758 if (strcmp (_NL_CURRENT (LC_TIME, T_FMT), HERE_T_FMT))
767 if (!recursive (HERE_T_FMT))
771 get_number (1, 7, 1);
772 tm->tm_wday = val % 7;
776 get_number (0, 99, 2);
777 /* XXX This cannot determine any field in TM. */
780 if (*rp < '0' || *rp > '9')
782 /* XXX Ignore the number since we would need some more
783 information to compute a real date. */
786 while (*rp >= '0' && *rp <= '9');
791 get_number (0, 53, 2);
792 /* XXX This cannot determine any field in TM without some
796 /* Match number of weekday. */
797 get_number (0, 6, 1);
802 /* Match year within century. */
803 get_number (0, 99, 2);
804 /* The "Year 2000: The Millennium Rollover" paper suggests that
805 values in the range 69-99 refer to the twentieth century. */
806 tm->tm_year = val >= 69 ? val : val + 100;
807 /* Indicate that we want to use the century, if specified. */
812 /* Match year including century number. */
813 get_number (0, 9999, 4);
814 tm->tm_year = val - 1900;
819 /* XXX How to handle this? */
826 /* Match locale's alternate date and time format. */
829 const char *fmt = _NL_CURRENT (LC_TIME, ERA_D_T_FMT);
832 fmt = _NL_CURRENT (LC_TIME, D_T_FMT);
834 if (!recursive (fmt))
843 if (strcmp (fmt, HERE_D_T_FMT))
850 /* The C locale has no era information, so use the
851 normal representation. */
852 if (!recursive (HERE_D_T_FMT))
859 /* Match name of base year in locale's alternate
861 /* XXX This is currently not implemented. It should
862 use the value _NL_CURRENT (LC_TIME, ERA). */
867 const char *fmt = _NL_CURRENT (LC_TIME, ERA_D_FMT);
870 fmt = _NL_CURRENT (LC_TIME, D_FMT);
872 if (!recursive (fmt))
881 if (strcmp (fmt, HERE_D_FMT))
887 if (!recursive (HERE_D_FMT))
893 const char *fmt = _NL_CURRENT (LC_TIME, ERA_T_FMT);
896 fmt = _NL_CURRENT (LC_TIME, T_FMT);
898 if (!recursive (fmt))
907 if (strcmp (fmt, HERE_T_FMT))
913 if (!recursive (HERE_T_FMT))
921 /* We have no information about the era format. Just use
922 the normal format. */
923 if (*fmt != 'c' && *fmt != 'C' && *fmt != 'y' && *fmt != 'Y'
924 && *fmt != 'x' && *fmt != 'X')
925 /* This is an illegal format. */
935 /* Match day of month using alternate numeric symbols. */
936 get_alt_number (1, 31, 2);
942 /* Match hour in 24-hour clock using alternate numeric
944 get_alt_number (0, 23, 2);
949 /* Match hour in 12-hour clock using alternate numeric
951 get_alt_number (1, 12, 2);
952 tm->tm_hour = val - 1;
956 /* Match month using alternate numeric symbols. */
957 get_alt_number (1, 12, 2);
958 tm->tm_mon = val - 1;
963 /* Match minutes using alternate numeric symbols. */
964 get_alt_number (0, 59, 2);
968 /* Match seconds using alternate numeric symbols. */
969 get_alt_number (0, 61, 2);
975 get_alt_number (0, 53, 2);
976 /* XXX This cannot determine any field in TM without
977 further information. */
980 /* Match number of weekday using alternate numeric symbols. */
981 get_alt_number (0, 6, 1);
986 /* Match year within century using alternate numeric symbols. */
987 get_alt_number (0, 99, 2);
988 tm->tm_year = val >= 69 ? val : val + 100;
1000 if (have_I && is_pm)
1006 tm->tm_year = tm->tm_year % 100 + (century - 19) * 100;
1008 /* Only the century, but not the year. Strange, but so be it. */
1009 tm->tm_year = (century - 19) * 100;
1012 if (want_xday && !have_wday) {
1013 if ( !(have_mon && have_mday) && have_yday) {
1014 /* we don't have tm_mon and/or tm_mday, compute them */
1016 while (__mon_yday[__isleap(1900 + tm->tm_year)][t_mon] <= tm->tm_yday)
1019 tm->tm_mon = t_mon - 1;
1021 tm->tm_mday = tm->tm_yday - __mon_yday[__isleap(1900 + tm->tm_year)][t_mon - 1] + 1;
1023 day_of_the_week (tm);
1025 if (want_xday && !have_yday)
1026 day_of_the_year (tm);
1033 strptime (buf, format, tm)
1038 enum locale_status decided;
1044 return strptime_internal (buf, format, tm, &decided);
1046 #endif /* not HAVE_STRPTIME */
1048 #ifdef NEED_MON_YDAY
1049 const unsigned short int __mon_yday[2][13] =
1052 { 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365 },
1054 { 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366 }
1058 /* fnmatch is required by POSIX, but we include an implementation for
1059 the sake of systems that don't have it, most notably Windows. Some
1060 systems do have fnmatch, but Apache's installation process installs
1061 its own fnmatch.h (incompatible with the system one!) in a system
1062 include directory, effectively rendering fnmatch unusable. This
1063 has been fixed with Apache 2, where fnmatch has been moved to apr
1064 and given a prefix, but many systems out there are still (as of
1065 this writing in 2005) broken and we must cater to them.
1067 Additionally, according to some conventional wisdom, many
1068 historical implementations of fnmatch are buggy and unreliable. If
1069 yours is such, undefine SYSTEM_FNMATCH in sysdep.h and tell us
1072 #ifndef SYSTEM_FNMATCH
1074 #define __FNM_FLAGS (FNM_PATHNAME | FNM_NOESCAPE | FNM_PERIOD)
1076 /* Match STRING against the filename pattern PATTERN, returning zero
1077 if it matches, FNM_NOMATCH if not. This implementation comes from
1078 an earlier version of GNU Bash. (It doesn't make sense to update
1079 it with a newer version because those versions add a lot of
1080 features Wget doesn't use or care about.) */
1083 fnmatch (const char *pattern, const char *string, int flags)
1085 register const char *p = pattern, *n = string;
1088 if ((flags & ~__FNM_FLAGS) != 0)
1094 while ((c = *p++) != '\0')
1100 return (FNM_NOMATCH);
1101 else if ((flags & FNM_PATHNAME) && *n == '/')
1102 return (FNM_NOMATCH);
1103 else if ((flags & FNM_PERIOD) && *n == '.' &&
1104 (n == string || ((flags & FNM_PATHNAME) && n[-1] == '/')))
1105 return (FNM_NOMATCH);
1109 if (!(flags & FNM_NOESCAPE))
1112 return (FNM_NOMATCH);
1116 if ((flags & FNM_PERIOD) && *n == '.' &&
1117 (n == string || ((flags & FNM_PATHNAME) && n[-1] == '/')))
1118 return (FNM_NOMATCH);
1120 for (c = *p++; c == '?' || c == '*'; c = *p++, ++n)
1121 if (((flags & FNM_PATHNAME) && *n == '/') ||
1122 (c == '?' && *n == '\0'))
1123 return (FNM_NOMATCH);
1129 char c1 = (!(flags & FNM_NOESCAPE) && c == '\\') ? *p : c;
1130 for (--p; *n != '\0'; ++n)
1131 if ((c == '[' || *n == c1) &&
1132 fnmatch (p, n, flags & ~FNM_PERIOD) == 0)
1134 return (FNM_NOMATCH);
1139 /* Nonzero if the sense of the character class is
1144 return (FNM_NOMATCH);
1146 if ((flags & FNM_PERIOD) && *n == '.' &&
1147 (n == string || ((flags & FNM_PATHNAME) && n[-1] == '/')))
1148 return (FNM_NOMATCH);
1150 /* Make sure there is a closing `]'. If there isn't,
1151 the `[' is just a character to be matched. */
1153 register const char *np;
1155 for (np = p; np && *np && *np != ']'; np++)
1161 return (FNM_NOMATCH);
1166 not = (*p == '!' || *p == '^');
1173 register char cstart = c, cend = c;
1175 if (!(flags & FNM_NOESCAPE) && c == '\\')
1176 cstart = cend = *p++;
1179 /* [ (unterminated) loses. */
1180 return (FNM_NOMATCH);
1184 if ((flags & FNM_PATHNAME) && c == '/')
1185 /* [/] can never match. */
1186 return (FNM_NOMATCH);
1188 if (c == '-' && *p != ']')
1191 if (!(flags & FNM_NOESCAPE) && cend == '\\')
1194 return (FNM_NOMATCH);
1198 if (*n >= cstart && *n <= cend)
1205 return (FNM_NOMATCH);
1211 /* Skip the rest of the [...] that already matched. */
1215 /* [... (unterminated) loses. */
1216 return (FNM_NOMATCH);
1219 if (!(flags & FNM_NOESCAPE) && c == '\\')
1220 /* 1003.2d11 is unclear if this is right. %%% */
1224 return (FNM_NOMATCH);
1230 return (FNM_NOMATCH);
1239 return (FNM_NOMATCH);
1242 #endif /* not SYSTEM_FNMATCH */
1245 /* timegm is a GNU extension, but lately also available on *BSD
1246 systems and possibly elsewhere. */
1248 /* True if YEAR is a leap year. */
1249 #define ISLEAP(year) \
1250 ((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0))
1252 /* Number of leap years in the range [y1, y2). */
1253 #define LEAPYEARS(y1, y2) \
1254 ((y2-1)/4 - (y1-1)/4) - ((y2-1)/100 - (y1-1)/100) + ((y2-1)/400 - (y1-1)/400)
1256 /* Inverse of gmtime: converts struct tm to time_t, assuming the data
1257 in tm is UTC rather than local timezone. This implementation
1258 returns the number of seconds elapsed since midnight 1970-01-01,
1259 converted to time_t. */
1262 timegm (struct tm *t)
1264 static const unsigned short int month_to_days[][13] = {
1265 { 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334 }, /* normal */
1266 { 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335 } /* leap */
1268 const int year = 1900 + t->tm_year;
1269 unsigned long secs; /* until 2106-02-07 for 32-bit unsigned long */
1275 days = 365 * (year - 1970);
1276 /* Take into account leap years between 1970 and YEAR, not counting
1278 days += LEAPYEARS (1970, year);
1279 if (t->tm_mon < 0 || t->tm_mon >= 12)
1281 days += month_to_days[ISLEAP (year)][t->tm_mon];
1282 days += t->tm_mday - 1;
1284 secs = days * 86400 + t->tm_hour * 3600 + t->tm_min * 60 + t->tm_sec;
1285 return (time_t) secs;
1287 #endif /* HAVE_TIMEGM */
1290 /* strtoll is required by C99 and used by Wget only on systems with
1291 LFS. Unfortunately, some systems have LFS, but no strtoll or
1292 equivalent. These include HPUX 11.0 and Windows.
1294 We use #ifdef NEED_STRTOLL instead of #ifndef HAVE_STRTOLL because
1295 of the systems which have a suitable replacement (e.g. _strtoi64 on
1296 Windows), on which Wget's str_to_wgint is instructed to use that
1300 char_value (char c, int base)
1305 if ('0' <= c && c <= '9')
1307 else if ('a' <= c && c <= 'z')
1308 value = c - 'a' + 10;
1309 else if ('A' <= c && c <= 'Z')
1310 value = c - 'A' + 10;
1318 #define STRTOLL_MAX TYPE_MAXIMUM (strtoll_type)
1319 /* This definition assumes two's complement arithmetic */
1320 #define STRTOLL_MIN (-STRTOLL_MAX - 1)
1322 /* Like a%b, but always returns a positive number when A is negative.
1323 (C doesn't guarantee the sign of the result.) */
1324 #define MOD(a, b) ((strtoll_type) -1 % 2 == 1 ? (a) % (b) : - ((a) % (b)))
1326 /* A strtoll-like replacement for systems that have an integral type
1327 larger than long but don't supply strtoll. This implementation
1328 makes no assumptions about the size of strtoll_type. */
1331 strtoll (const char *nptr, char **endptr, int base)
1333 strtoll_type result = 0;
1336 if (base != 0 && (base < 2 || base > 36))
1342 while (*nptr == ' ' || *nptr == '\t')
1349 else if (*nptr == '+')
1357 /* If BASE is 0, determine the real base based on the beginning on
1358 the number; octal numbers begin with "0", hexadecimal with "0x",
1359 and the others are considered octal. */
1362 if ((base == 0 || base == 16)
1364 (*(nptr + 1) == 'x' || *(nptr + 1) == 'X'))
1368 /* "0x" must be followed by at least one hex char. If not,
1369 return 0 and place ENDPTR on 'x'. */
1370 if (!c_isxdigit (*nptr))
1384 /* Parse positive number, checking for overflow. */
1386 /* Overflow watermark. If RESULT exceeds it, overflow occurs on
1387 this digit. If result==WATERMARK, current digit may not
1388 exceed the last digit of maximum value. */
1389 const strtoll_type WATERMARK = STRTOLL_MAX / base;
1390 for (; (digit = char_value (*nptr, base)) != -1; ++nptr)
1392 if (result > WATERMARK
1393 || (result == WATERMARK && digit > STRTOLL_MAX % base))
1395 result = STRTOLL_MAX;
1399 result = base * result + digit;
1404 /* Parse negative number, checking for underflow. */
1406 const strtoll_type WATERMARK = STRTOLL_MIN / base;
1407 for (; (digit = char_value (*nptr, base)) != -1; ++nptr)
1409 if (result < WATERMARK
1410 || (result == WATERMARK && digit > MOD (STRTOLL_MIN, base)))
1412 result = STRTOLL_MIN;
1416 result = base * result - digit;
1421 *endptr = (char *) nptr;
1429 #endif /* NEED_STRTOLL */