--- /dev/null
+/*
+ * Copyright (c) 1996-2012 by the citadel.org team
+ *
+ * This program is open source software. You can redistribute it and/or
+ * modify it under the terms of the GNU General Public License, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include "webcit.h"
+#include "webserver.h"
+
+#ifdef HAVE_USELOCALE
+extern locale_t *wc_locales;
+#endif
+
+typedef unsigned char byte;
+
+#define FALSE 0 /**< no. */
+#define TRUE 1 /**< yes. */
+
+/*
+ * Wrapper around strftime() or strftime_l()
+ * depending upon how our build is configured.
+ *
+ * s String target buffer
+ * max Maximum size of string target buffer
+ * format strftime() format
+ * tm Input date/time
+ */
+size_t wc_strftime(char *s, size_t max, const char *format, const struct tm *tm)
+{
+
+#ifdef ENABLE_NLS
+#ifdef HAVE_USELOCALE
+ if (wc_locales[WC->selected_language] == NULL) {
+ return strftime(s, max, format, tm);
+ }
+ else {
+ return strftime_l(s, max, format, tm, wc_locales[WC->selected_language]);
+ }
+#else
+ return strftime(s, max, format, tm);
+#endif
+#else
+ return strftime(s, max, format, tm);
+#endif
+}
+
+
+
+/*
+ * Format a date/time stamp for output
+ */
+long webcit_fmt_date(char *buf, size_t siz, time_t thetime, int Format)
+{
+ long retlen = 0;
+ struct tm tm;
+ struct tm today_tm;
+ time_t today_timet;
+ int time_format;
+
+ time_format = get_time_format_cached ();
+ today_timet = time(NULL);
+ localtime_r(&today_timet, &today_tm);
+
+ localtime_r(&thetime, &tm);
+
+ /*
+ * DATEFMT_FULL: full display
+ * DATEFMT_BRIEF: if date == today, show only the time
+ * otherwise, for messages up to 6 months old,
+ * show the month and day, and the time
+ * older than 6 months, show only the date
+ * DATEFMT_RAWDATE: show full date, regardless of age
+ * DATEFMT_LOCALEDATE: show full date as prefered for the locale
+ */
+
+ switch (Format) {
+ case DATEFMT_BRIEF:
+ if ((tm.tm_year == today_tm.tm_year)
+ &&(tm.tm_mon == today_tm.tm_mon)
+ &&(tm.tm_mday == today_tm.tm_mday)) {
+ if (time_format == WC_TIMEFORMAT_24)
+ retlen = wc_strftime(buf, siz, "%k:%M", &tm);
+ else
+ retlen = wc_strftime(buf, siz, "%l:%M%p", &tm);
+ }
+ else if (today_timet - thetime < 15552000) {
+ if (time_format == WC_TIMEFORMAT_24)
+ retlen = wc_strftime(buf, siz, "%b %d %k:%M", &tm);
+ else
+ retlen = wc_strftime(buf, siz, "%b %d %l:%M%p", &tm);
+ }
+ else {
+ retlen = wc_strftime(buf, siz, "%b %d %Y", &tm);
+ }
+ break;
+ case DATEFMT_FULL:
+ if (time_format == WC_TIMEFORMAT_24)
+ retlen = wc_strftime(buf, siz, "%a %b %d %Y %T %Z", &tm);
+ else
+ retlen = wc_strftime(buf, siz, "%a %b %d %Y %r %Z", &tm);
+ break;
+ case DATEFMT_RAWDATE:
+ retlen = wc_strftime(buf, siz, "%a %b %d %Y", &tm);
+ break;
+ case DATEFMT_LOCALEDATE:
+ retlen = wc_strftime(buf, siz, "%x", &tm);
+ break;
+ }
+ return retlen;
+}
+
+
+/*
+ * Try to guess whether the user will prefer 12 hour or 24 hour time based on the locale.
+ */
+long guess_calhourformat(void) {
+ char buf[64];
+ struct tm tm;
+ memset(&tm, 0, sizeof tm);
+ wc_strftime(buf, 64, "%X", &tm);
+ if (buf[strlen(buf)-1] == 'M') {
+ return 12;
+ }
+ return 24;
+}
+
+
+/*
+ * learn the users timeformat preference.
+ */
+int get_time_format_cached (void)
+{
+ long calhourformat;
+ int *time_format_cache;
+ time_format_cache = &(WC->time_format_cache);
+ if (*time_format_cache == WC_TIMEFORMAT_NONE)
+ {
+ get_pref_long("calhourformat", &calhourformat, 99);
+
+ /* If we don't know the user's time format preference yet,
+ * make a guess based on the locale.
+ */
+ if (calhourformat == 99) {
+ calhourformat = guess_calhourformat();
+ }
+
+ /* Now set the preference */
+ if (calhourformat == 24)
+ *time_format_cache = WC_TIMEFORMAT_24;
+ else
+ *time_format_cache = WC_TIMEFORMAT_AMPM;
+ }
+ return *time_format_cache;
+}
+
+/*
+ * Format TIME ONLY for output
+ * buf the output buffer
+ * thetime time to format into buf
+ */
+void fmt_time(char *buf, size_t siz, time_t thetime)
+{
+ struct tm *tm;
+ int hour;
+ int time_format;
+
+ time_format = get_time_format_cached ();
+ buf[0] = 0;
+ tm = localtime(&thetime);
+ hour = tm->tm_hour;
+ if (hour == 0)
+ hour = 12;
+ else if (hour > 12)
+ hour = hour - 12;
+
+ if (time_format == WC_TIMEFORMAT_24) {
+ snprintf(buf, siz, "%d:%02d",
+ tm->tm_hour, tm->tm_min
+ );
+ }
+ else {
+ snprintf(buf, siz, "%d:%02d%s",
+ hour, tm->tm_min, ((tm->tm_hour > 12) ? "pm" : "am")
+ );
+ }
+}
+
+
+
+
+/*
+ * Break down the timestamp used in HTTP headers
+ * Should read rfc1123 and rfc850 dates OK
+ * FIXME won't read asctime
+ * Doesn't understand timezone, but we only should be using GMT/UTC anyway
+ */
+time_t httpdate_to_timestamp(StrBuf *buf)
+{
+ time_t t = 0;
+ struct tm tt;
+ const char *c;
+
+ /** Skip day of week, to number */
+ for (c = ChrPtr(buf); *c != ' '; c++)
+ ;
+ c++;
+
+ memset(&tt, 0, sizeof(tt));
+
+ /* Get day of month */
+ tt.tm_mday = atoi(c);
+ for (; *c != ' ' && *c != '-'; c++);
+ c++;
+
+ /* Get month */
+ switch (*c) {
+ case 'A': /* April, August */
+ tt.tm_mon = (c[1] == 'p') ? 3 : 7;
+ break;
+ case 'D': /* December */
+ tt.tm_mon = 11;
+ break;
+ case 'F': /* February */
+ tt.tm_mon = 1;
+ break;
+ case 'M': /* March, May */
+ tt.tm_mon = (c[2] == 'r') ? 2 : 4;
+ break;
+ case 'J': /* January, June, July */
+ tt.tm_mon = (c[2] == 'n') ? ((c[1] == 'a') ? 0 : 5) : 6;
+ break;
+ case 'N': /* November */
+ tt.tm_mon = 10;
+ break;
+ case 'O': /* October */
+ tt.tm_mon = 9;
+ break;
+ case 'S': /* September */
+ tt.tm_mon = 8;
+ break;
+ default:
+ return 42;
+ break; /* NOTREACHED */
+ }
+ c += 4;
+
+ tt.tm_year = 0;
+ /* Get year */
+ tt.tm_year = atoi(c);
+ for (; *c != ' '; c++);
+ c++;
+ if (tt.tm_year >= 1900)
+ tt.tm_year -= 1900;
+
+ /* Get hour */
+ tt.tm_hour = atoi(c);
+ for (; *c != ':'; c++);
+ c++;
+
+ /* Get minute */
+ tt.tm_min = atoi(c);
+ for (; *c != ':'; c++);
+ c++;
+
+ /* Get second */
+ tt.tm_sec = atoi(c);
+ for (; *c && *c != ' '; c++);
+
+ /* Got everything; let's go. The global 'timezone' variable contains the
+ * local timezone's offset from UTC, in seconds, so we apply that to tm_sec.
+ * This produces an illegal value for tm_sec, but mktime() will normalize
+ * it for us. This eliminates the need to temporarily switch the environment
+ * variable TZ to UTC, which is good because it fails to switch back on
+ * some systems.
+ */
+ tzset();
+#ifdef __FreeBSD__
+ tt.tm_sec = tt.tm_sec - tt.tm_gmtoff;
+#else
+ tt.tm_sec = tt.tm_sec - (int)timezone;
+#endif
+ t = mktime(&tt);
+ return t;
+}
+
+
+void LoadTimeformatSettingsCache(StrBuf *Preference, long lvalue)
+{
+ int *time_format_cache;
+
+ time_format_cache = &(WC->time_format_cache);
+ if (lvalue == 24)
+ *time_format_cache = WC_TIMEFORMAT_24;
+ else
+ *time_format_cache = WC_TIMEFORMAT_AMPM;
+}
+
+
+
+void
+InitModule_DATETIME
+(void)
+{
+ RegisterPreference("calhourformat", _("Time format"), PRF_INT, LoadTimeformatSettingsCache);
+
+
+}
projects / citadel.git / blobdiff