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-rw-r--r--protocols/Sametime/src/glib/gdate.c1913
1 files changed, 1913 insertions, 0 deletions
diff --git a/protocols/Sametime/src/glib/gdate.c b/protocols/Sametime/src/glib/gdate.c
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+++ b/protocols/Sametime/src/glib/gdate.c
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+/* GLIB - Library of useful routines for C programming
+ * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+/*
+ * Modified by the GLib Team and others 1997-2000. See the AUTHORS
+ * file for a list of people on the GLib Team. See the ChangeLog
+ * files for a list of changes. These files are distributed with
+ * GLib at ftp://ftp.gtk.org/pub/gtk/.
+ */
+
+/*
+ * MT safe
+ */
+
+#include "config.h"
+#include "glibconfig.h"
+
+#define DEBUG_MSG(x) /* */
+#ifdef G_ENABLE_DEBUG
+/* #define DEBUG_MSG(args) g_message args ; */
+#endif
+
+#include <time.h>
+#include <string.h>
+#include <stdlib.h>
+#include <locale.h>
+
+#ifdef G_OS_WIN32
+#include <windows.h>
+#endif
+
+#include "gdate.h"
+
+#include "gconvert.h"
+#include "gmem.h"
+#include "gstrfuncs.h"
+#include "gtestutils.h"
+#include "gthread.h"
+#include "gunicode.h"
+
+#ifdef G_OS_WIN32
+#include "garray.h"
+#endif
+
+GDate*
+g_date_new (void)
+{
+ GDate *d = g_new0 (GDate, 1); /* happily, 0 is the invalid flag for everything. */
+
+ return d;
+}
+
+GDate*
+g_date_new_dmy (GDateDay day,
+ GDateMonth m,
+ GDateYear y)
+{
+ GDate *d;
+ g_return_val_if_fail (g_date_valid_dmy (day, m, y), NULL);
+
+ d = g_new (GDate, 1);
+
+ d->julian = FALSE;
+ d->dmy = TRUE;
+
+ d->month = m;
+ d->day = day;
+ d->year = y;
+
+ g_assert (g_date_valid (d));
+
+ return d;
+}
+
+GDate*
+g_date_new_julian (guint32 j)
+{
+ GDate *d;
+ g_return_val_if_fail (g_date_valid_julian (j), NULL);
+
+ d = g_new (GDate, 1);
+
+ d->julian = TRUE;
+ d->dmy = FALSE;
+
+ d->julian_days = j;
+
+ g_assert (g_date_valid (d));
+
+ return d;
+}
+
+void
+g_date_free (GDate *d)
+{
+ g_return_if_fail (d != NULL);
+
+ g_free (d);
+}
+
+gboolean
+g_date_valid (const GDate *d)
+{
+ g_return_val_if_fail (d != NULL, FALSE);
+
+ return (d->julian || d->dmy);
+}
+
+static const guint8 days_in_months[2][13] =
+{ /* error, jan feb mar apr may jun jul aug sep oct nov dec */
+ { 0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },
+ { 0, 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 } /* leap year */
+};
+
+static const guint16 days_in_year[2][14] =
+{ /* 0, jan feb mar apr may jun jul aug sep oct nov dec */
+ { 0, 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365 },
+ { 0, 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366 }
+};
+
+gboolean
+g_date_valid_month (GDateMonth m)
+{
+ return ( (m > G_DATE_BAD_MONTH) && (m < 13) );
+}
+
+gboolean
+g_date_valid_year (GDateYear y)
+{
+ return ( y > G_DATE_BAD_YEAR );
+}
+
+gboolean
+g_date_valid_day (GDateDay d)
+{
+ return ( (d > G_DATE_BAD_DAY) && (d < 32) );
+}
+
+gboolean
+g_date_valid_weekday (GDateWeekday w)
+{
+ return ( (w > G_DATE_BAD_WEEKDAY) && (w < 8) );
+}
+
+gboolean
+g_date_valid_julian (guint32 j)
+{
+ return (j > G_DATE_BAD_JULIAN);
+}
+
+gboolean
+g_date_valid_dmy (GDateDay d,
+ GDateMonth m,
+ GDateYear y)
+{
+ return ( (m > G_DATE_BAD_MONTH) &&
+ (m < 13) &&
+ (d > G_DATE_BAD_DAY) &&
+ (y > G_DATE_BAD_YEAR) && /* must check before using g_date_is_leap_year */
+ (d <= (g_date_is_leap_year (y) ?
+ days_in_months[1][m] : days_in_months[0][m])) );
+}
+
+
+/* "Julian days" just means an absolute number of days, where Day 1 ==
+ * Jan 1, Year 1
+ */
+static void
+g_date_update_julian (const GDate *const_d)
+{
+ GDate *d = (GDate *) const_d;
+ GDateYear year;
+ gint idx;
+
+ g_return_if_fail (d != NULL);
+ g_return_if_fail (d->dmy);
+ g_return_if_fail (!d->julian);
+ g_return_if_fail (g_date_valid_dmy (d->day, d->month, d->year));
+
+ /* What we actually do is: multiply years * 365 days in the year,
+ * add the number of years divided by 4, subtract the number of
+ * years divided by 100 and add the number of years divided by 400,
+ * which accounts for leap year stuff. Code from Steffen Beyer's
+ * DateCalc.
+ */
+
+ year = d->year - 1; /* we know d->year > 0 since it's valid */
+
+ d->julian_days = year * 365U;
+ d->julian_days += (year >>= 2); /* divide by 4 and add */
+ d->julian_days -= (year /= 25); /* divides original # years by 100 */
+ d->julian_days += year >> 2; /* divides by 4, which divides original by 400 */
+
+ idx = g_date_is_leap_year (d->year) ? 1 : 0;
+
+ d->julian_days += days_in_year[idx][d->month] + d->day;
+
+ g_return_if_fail (g_date_valid_julian (d->julian_days));
+
+ d->julian = TRUE;
+}
+
+static void
+g_date_update_dmy (const GDate *const_d)
+{
+ GDate *d = (GDate *) const_d;
+ GDateYear y;
+ GDateMonth m;
+ GDateDay day;
+
+ guint32 A, B, C, D, E, M;
+
+ g_return_if_fail (d != NULL);
+ g_return_if_fail (d->julian);
+ g_return_if_fail (!d->dmy);
+ g_return_if_fail (g_date_valid_julian (d->julian_days));
+
+ /* Formula taken from the Calendar FAQ; the formula was for the
+ * Julian Period which starts on 1 January 4713 BC, so we add
+ * 1,721,425 to the number of days before doing the formula.
+ *
+ * I'm sure this can be simplified for our 1 January 1 AD period
+ * start, but I can't figure out how to unpack the formula.
+ */
+
+ A = d->julian_days + 1721425 + 32045;
+ B = ( 4 *(A + 36524) )/ 146097 - 1;
+ C = A - (146097 * B)/4;
+ D = ( 4 * (C + 365) ) / 1461 - 1;
+ E = C - ((1461*D) / 4);
+ M = (5 * (E - 1) + 2)/153;
+
+ m = M + 3 - (12*(M/10));
+ day = E - (153*M + 2)/5;
+ y = 100 * B + D - 4800 + (M/10);
+
+#ifdef G_ENABLE_DEBUG
+ if (!g_date_valid_dmy (day, m, y))
+ g_warning ("\nOOPS julian: %u computed dmy: %u %u %u\n",
+ d->julian_days, day, m, y);
+#endif
+
+ d->month = m;
+ d->day = day;
+ d->year = y;
+
+ d->dmy = TRUE;
+}
+
+GDateWeekday
+g_date_get_weekday (const GDate *d)
+{
+ g_return_val_if_fail (g_date_valid (d), G_DATE_BAD_WEEKDAY);
+
+ if (!d->julian)
+ g_date_update_julian (d);
+
+ g_return_val_if_fail (d->julian, G_DATE_BAD_WEEKDAY);
+
+ return ((d->julian_days - 1) % 7) + 1;
+}
+
+GDateMonth
+g_date_get_month (const GDate *d)
+{
+ g_return_val_if_fail (g_date_valid (d), G_DATE_BAD_MONTH);
+
+ if (!d->dmy)
+ g_date_update_dmy (d);
+
+ g_return_val_if_fail (d->dmy, G_DATE_BAD_MONTH);
+
+ return d->month;
+}
+
+GDateYear
+g_date_get_year (const GDate *d)
+{
+ g_return_val_if_fail (g_date_valid (d), G_DATE_BAD_YEAR);
+
+ if (!d->dmy)
+ g_date_update_dmy (d);
+
+ g_return_val_if_fail (d->dmy, G_DATE_BAD_YEAR);
+
+ return d->year;
+}
+
+GDateDay
+g_date_get_day (const GDate *d)
+{
+ g_return_val_if_fail (g_date_valid (d), G_DATE_BAD_DAY);
+
+ if (!d->dmy)
+ g_date_update_dmy (d);
+
+ g_return_val_if_fail (d->dmy, G_DATE_BAD_DAY);
+
+ return d->day;
+}
+
+guint32
+g_date_get_julian (const GDate *d)
+{
+ g_return_val_if_fail (g_date_valid (d), G_DATE_BAD_JULIAN);
+
+ if (!d->julian)
+ g_date_update_julian (d);
+
+ g_return_val_if_fail (d->julian, G_DATE_BAD_JULIAN);
+
+ return d->julian_days;
+}
+
+guint
+g_date_get_day_of_year (const GDate *d)
+{
+ gint idx;
+
+ g_return_val_if_fail (g_date_valid (d), 0);
+
+ if (!d->dmy)
+ g_date_update_dmy (d);
+
+ g_return_val_if_fail (d->dmy, 0);
+
+ idx = g_date_is_leap_year (d->year) ? 1 : 0;
+
+ return (days_in_year[idx][d->month] + d->day);
+}
+
+guint
+g_date_get_monday_week_of_year (const GDate *d)
+{
+ GDateWeekday wd;
+ guint day;
+ GDate first;
+
+ g_return_val_if_fail (g_date_valid (d), 0);
+
+ if (!d->dmy)
+ g_date_update_dmy (d);
+
+ g_return_val_if_fail (d->dmy, 0);
+
+ g_date_clear (&first, 1);
+
+ g_date_set_dmy (&first, 1, 1, d->year);
+
+ wd = g_date_get_weekday (&first) - 1; /* make Monday day 0 */
+ day = g_date_get_day_of_year (d) - 1;
+
+ return ((day + wd)/7U + (wd == 0 ? 1 : 0));
+}
+
+guint
+g_date_get_sunday_week_of_year (const GDate *d)
+{
+ GDateWeekday wd;
+ guint day;
+ GDate first;
+
+ g_return_val_if_fail (g_date_valid (d), 0);
+
+ if (!d->dmy)
+ g_date_update_dmy (d);
+
+ g_return_val_if_fail (d->dmy, 0);
+
+ g_date_clear (&first, 1);
+
+ g_date_set_dmy (&first, 1, 1, d->year);
+
+ wd = g_date_get_weekday (&first);
+ if (wd == 7) wd = 0; /* make Sunday day 0 */
+ day = g_date_get_day_of_year (d) - 1;
+
+ return ((day + wd)/7U + (wd == 0 ? 1 : 0));
+}
+
+/**
+ * g_date_get_iso8601_week_of_year:
+ * @date: a valid #GDate
+ *
+ * Returns the week of the year, where weeks are interpreted according
+ * to ISO 8601.
+ *
+ * Returns: ISO 8601 week number of the year.
+ *
+ * Since: 2.6
+ **/
+guint
+g_date_get_iso8601_week_of_year (const GDate *d)
+{
+ guint j, d4, L, d1, w;
+
+ g_return_val_if_fail (g_date_valid (d), 0);
+
+ if (!d->julian)
+ g_date_update_julian (d);
+
+ g_return_val_if_fail (d->julian, 0);
+
+ /* Formula taken from the Calendar FAQ; the formula was for the
+ * Julian Period which starts on 1 January 4713 BC, so we add
+ * 1,721,425 to the number of days before doing the formula.
+ */
+ j = d->julian_days + 1721425;
+ d4 = (j + 31741 - (j % 7)) % 146097 % 36524 % 1461;
+ L = d4 / 1460;
+ d1 = ((d4 - L) % 365) + L;
+ w = d1 / 7 + 1;
+
+ return w;
+}
+
+gint
+g_date_days_between (const GDate *d1,
+ const GDate *d2)
+{
+ g_return_val_if_fail (g_date_valid (d1), 0);
+ g_return_val_if_fail (g_date_valid (d2), 0);
+
+ return (gint)g_date_get_julian (d2) - (gint)g_date_get_julian (d1);
+}
+
+void
+g_date_clear (GDate *d, guint ndates)
+{
+ g_return_if_fail (d != NULL);
+ g_return_if_fail (ndates != 0);
+
+ memset (d, 0x0, ndates*sizeof (GDate));
+}
+
+G_LOCK_DEFINE_STATIC (g_date_global);
+
+/* These are for the parser, output to the user should use *
+ * g_date_strftime () - this creates more never-freed memory to annoy
+ * all those memory debugger users. :-)
+ */
+
+static gchar *long_month_names[13] =
+{
+ NULL,
+};
+
+static gchar *short_month_names[13] =
+{
+ NULL,
+};
+
+/* This tells us if we need to update the parse info */
+static gchar *current_locale = NULL;
+
+/* order of these in the current locale */
+static GDateDMY dmy_order[3] =
+{
+ G_DATE_DAY, G_DATE_MONTH, G_DATE_YEAR
+};
+
+/* Where to chop two-digit years: i.e., for the 1930 default, numbers
+ * 29 and below are counted as in the year 2000, numbers 30 and above
+ * are counted as in the year 1900.
+ */
+
+static const GDateYear twodigit_start_year = 1930;
+
+/* It is impossible to enter a year between 1 AD and 99 AD with this
+ * in effect.
+ */
+static gboolean using_twodigit_years = FALSE;
+
+/* Adjustment of locale era to AD, non-zero means using locale era
+ */
+static gint locale_era_adjust = 0;
+
+struct _GDateParseTokens {
+ gint num_ints;
+ gint n[3];
+ guint month;
+};
+
+typedef struct _GDateParseTokens GDateParseTokens;
+
+#define NUM_LEN 10
+
+/* HOLDS: g_date_global_lock */
+static void
+g_date_fill_parse_tokens (const gchar *str, GDateParseTokens *pt)
+{
+ gchar num[4][NUM_LEN+1];
+ gint i;
+ const guchar *s;
+
+ /* We count 4, but store 3; so we can give an error
+ * if there are 4.
+ */
+ num[0][0] = num[1][0] = num[2][0] = num[3][0] = '\0';
+
+ s = (const guchar *) str;
+ pt->num_ints = 0;
+ while (*s && pt->num_ints < 4)
+ {
+
+ i = 0;
+ while (*s && g_ascii_isdigit (*s) && i < NUM_LEN)
+ {
+ num[pt->num_ints][i] = *s;
+ ++s;
+ ++i;
+ }
+
+ if (i > 0)
+ {
+ num[pt->num_ints][i] = '\0';
+ ++(pt->num_ints);
+ }
+
+ if (*s == '\0') break;
+
+ ++s;
+ }
+
+ pt->n[0] = pt->num_ints > 0 ? atoi (num[0]) : 0;
+ pt->n[1] = pt->num_ints > 1 ? atoi (num[1]) : 0;
+ pt->n[2] = pt->num_ints > 2 ? atoi (num[2]) : 0;
+
+ pt->month = G_DATE_BAD_MONTH;
+
+ if (pt->num_ints < 3)
+ {
+ gchar *casefold;
+ gchar *normalized;
+
+ casefold = g_utf8_casefold (str, -1);
+ normalized = g_utf8_normalize (casefold, -1, G_NORMALIZE_ALL);
+ g_free (casefold);
+
+ i = 1;
+ while (i < 13)
+ {
+ if (long_month_names[i] != NULL)
+ {
+ const gchar *found = strstr (normalized, long_month_names[i]);
+
+ if (found != NULL)
+ {
+ pt->month = i;
+ break;
+ }
+ }
+
+ if (short_month_names[i] != NULL)
+ {
+ const gchar *found = strstr (normalized, short_month_names[i]);
+
+ if (found != NULL)
+ {
+ pt->month = i;
+ break;
+ }
+ }
+
+ ++i;
+ }
+
+ g_free (normalized);
+ }
+}
+
+/* HOLDS: g_date_global_lock */
+static void
+g_date_prepare_to_parse (const gchar *str,
+ GDateParseTokens *pt)
+{
+ const gchar *locale = setlocale (LC_TIME, NULL);
+ gboolean recompute_localeinfo = FALSE;
+ GDate d;
+
+ g_return_if_fail (locale != NULL); /* should not happen */
+
+ g_date_clear (&d, 1); /* clear for scratch use */
+
+ if ( (current_locale == NULL) || (strcmp (locale, current_locale) != 0) )
+ recompute_localeinfo = TRUE; /* Uh, there used to be a reason for the temporary */
+
+ if (recompute_localeinfo)
+ {
+ int i = 1;
+ GDateParseTokens testpt;
+ gchar buf[128];
+
+ g_free (current_locale); /* still works if current_locale == NULL */
+
+ current_locale = g_strdup (locale);
+
+ short_month_names[0] = "Error";
+ long_month_names[0] = "Error";
+
+ while (i < 13)
+ {
+ gchar *casefold;
+
+ g_date_set_dmy (&d, 1, i, 1);
+
+ g_return_if_fail (g_date_valid (&d));
+
+ g_date_strftime (buf, 127, "%b", &d);
+
+ casefold = g_utf8_casefold (buf, -1);
+ g_free (short_month_names[i]);
+ short_month_names[i] = g_utf8_normalize (casefold, -1, G_NORMALIZE_ALL);
+ g_free (casefold);
+
+ g_date_strftime (buf, 127, "%B", &d);
+ casefold = g_utf8_casefold (buf, -1);
+ g_free (long_month_names[i]);
+ long_month_names[i] = g_utf8_normalize (casefold, -1, G_NORMALIZE_ALL);
+ g_free (casefold);
+
+ ++i;
+ }
+
+ /* Determine DMY order */
+
+ /* had to pick a random day - don't change this, some strftimes
+ * are broken on some days, and this one is good so far. */
+ g_date_set_dmy (&d, 4, 7, 1976);
+
+ g_date_strftime (buf, 127, "%x", &d);
+
+ g_date_fill_parse_tokens (buf, &testpt);
+
+ i = 0;
+ while (i < testpt.num_ints)
+ {
+ switch (testpt.n[i])
+ {
+ case 7:
+ dmy_order[i] = G_DATE_MONTH;
+ break;
+ case 4:
+ dmy_order[i] = G_DATE_DAY;
+ break;
+ case 76:
+ using_twodigit_years = TRUE; /* FALL THRU */
+ case 1976:
+ dmy_order[i] = G_DATE_YEAR;
+ break;
+ default:
+ /* assume locale era */
+ locale_era_adjust = 1976 - testpt.n[i];
+ dmy_order[i] = G_DATE_YEAR;
+ break;
+ }
+ ++i;
+ }
+
+#ifdef G_ENABLE_DEBUG
+ DEBUG_MSG (("**GDate prepared a new set of locale-specific parse rules."));
+ i = 1;
+ while (i < 13)
+ {
+ DEBUG_MSG ((" %s %s", long_month_names[i], short_month_names[i]));
+ ++i;
+ }
+ if (using_twodigit_years)
+ {
+ DEBUG_MSG (("**Using twodigit years with cutoff year: %u", twodigit_start_year));
+ }
+ {
+ gchar *strings[3];
+ i = 0;
+ while (i < 3)
+ {
+ switch (dmy_order[i])
+ {
+ case G_DATE_MONTH:
+ strings[i] = "Month";
+ break;
+ case G_DATE_YEAR:
+ strings[i] = "Year";
+ break;
+ case G_DATE_DAY:
+ strings[i] = "Day";
+ break;
+ default:
+ strings[i] = NULL;
+ break;
+ }
+ ++i;
+ }
+ DEBUG_MSG (("**Order: %s, %s, %s", strings[0], strings[1], strings[2]));
+ DEBUG_MSG (("**Sample date in this locale: `%s'", buf));
+ }
+#endif
+ }
+
+ g_date_fill_parse_tokens (str, pt);
+}
+
+void
+g_date_set_parse (GDate *d,
+ const gchar *str)
+{
+ GDateParseTokens pt;
+ guint m = G_DATE_BAD_MONTH, day = G_DATE_BAD_DAY, y = G_DATE_BAD_YEAR;
+
+ g_return_if_fail (d != NULL);
+
+ /* set invalid */
+ g_date_clear (d, 1);
+
+ G_LOCK (g_date_global);
+
+ g_date_prepare_to_parse (str, &pt);
+
+ DEBUG_MSG (("Found %d ints, `%d' `%d' `%d' and written out month %d",
+ pt.num_ints, pt.n[0], pt.n[1], pt.n[2], pt.month));
+
+
+ if (pt.num_ints == 4)
+ {
+ G_UNLOCK (g_date_global);
+ return; /* presumably a typo; bail out. */
+ }
+
+ if (pt.num_ints > 1)
+ {
+ int i = 0;
+ int j = 0;
+
+ g_assert (pt.num_ints < 4); /* i.e., it is 2 or 3 */
+
+ while (i < pt.num_ints && j < 3)
+ {
+ switch (dmy_order[j])
+ {
+ case G_DATE_MONTH:
+ {
+ if (pt.num_ints == 2 && pt.month != G_DATE_BAD_MONTH)
+ {
+ m = pt.month;
+ ++j; /* skip months, but don't skip this number */
+ continue;
+ }
+ else
+ m = pt.n[i];
+ }
+ break;
+ case G_DATE_DAY:
+ {
+ if (pt.num_ints == 2 && pt.month == G_DATE_BAD_MONTH)
+ {
+ day = 1;
+ ++j; /* skip days, since we may have month/year */
+ continue;
+ }
+ day = pt.n[i];
+ }
+ break;
+ case G_DATE_YEAR:
+ {
+ y = pt.n[i];
+
+ if (locale_era_adjust != 0)
+ {
+ y += locale_era_adjust;
+ }
+ else if (using_twodigit_years && y < 100)
+ {
+ guint two = twodigit_start_year % 100;
+ guint century = (twodigit_start_year / 100) * 100;
+
+ if (y < two)
+ century += 100;
+
+ y += century;
+ }
+ }
+ break;
+ default:
+ break;
+ }
+
+ ++i;
+ ++j;
+ }
+
+
+ if (pt.num_ints == 3 && !g_date_valid_dmy (day, m, y))
+ {
+ /* Try YYYY MM DD */
+ y = pt.n[0];
+ m = pt.n[1];
+ day = pt.n[2];
+
+ if (using_twodigit_years && y < 100)
+ y = G_DATE_BAD_YEAR; /* avoids ambiguity */
+ }
+ else if (pt.num_ints == 2)
+ {
+ if (m == G_DATE_BAD_MONTH && pt.month != G_DATE_BAD_MONTH)
+ m = pt.month;
+ }
+ }
+ else if (pt.num_ints == 1)
+ {
+ if (pt.month != G_DATE_BAD_MONTH)
+ {
+ /* Month name and year? */
+ m = pt.month;
+ day = 1;
+ y = pt.n[0];
+ }
+ else
+ {
+ /* Try yyyymmdd and yymmdd */
+
+ m = (pt.n[0]/100) % 100;
+ day = pt.n[0] % 100;
+ y = pt.n[0]/10000;
+
+ /* FIXME move this into a separate function */
+ if (using_twodigit_years && y < 100)
+ {
+ guint two = twodigit_start_year % 100;
+ guint century = (twodigit_start_year / 100) * 100;
+
+ if (y < two)
+ century += 100;
+
+ y += century;
+ }
+ }
+ }
+
+ /* See if we got anything valid out of all this. */
+ /* y < 8000 is to catch 19998 style typos; the library is OK up to 65535 or so */
+ if (y < 8000 && g_date_valid_dmy (day, m, y))
+ {
+ d->month = m;
+ d->day = day;
+ d->year = y;
+ d->dmy = TRUE;
+ }
+#ifdef G_ENABLE_DEBUG
+ else
+ {
+ DEBUG_MSG (("Rejected DMY %u %u %u", day, m, y));
+ }
+#endif
+ G_UNLOCK (g_date_global);
+}
+
+/**
+ * g_date_set_time_t:
+ * @date: a #GDate
+ * @timet: <type>time_t</type> value to set
+ *
+ * Sets the value of a date to the date corresponding to a time
+ * specified as a time_t. The time to date conversion is done using
+ * the user's current timezone.
+ *
+ * To set the value of a date to the current day, you could write:
+ * |[
+ * g_date_set_time_t (date, time (NULL));
+ * ]|
+ *
+ * Since: 2.10
+ */
+void
+g_date_set_time_t (GDate *date,
+ time_t timet)
+{
+ struct tm tm;
+
+ g_return_if_fail (date != NULL);
+
+#ifdef HAVE_LOCALTIME_R
+ localtime_r (&timet, &tm);
+#else
+ {
+ struct tm *ptm = localtime (&timet);
+
+ if (ptm == NULL)
+ {
+ /* Happens at least in Microsoft's C library if you pass a
+ * negative time_t. Use 2000-01-01 as default date.
+ */
+#ifndef G_DISABLE_CHECKS
+ g_return_if_fail_warning (G_LOG_DOMAIN, "g_date_set_time", "ptm != NULL");
+#endif
+
+ tm.tm_mon = 0;
+ tm.tm_mday = 1;
+ tm.tm_year = 100;
+ }
+ else
+ memcpy ((void *) &tm, (void *) ptm, sizeof(struct tm));
+ }
+#endif
+
+ date->julian = FALSE;
+
+ date->month = tm.tm_mon + 1;
+ date->day = tm.tm_mday;
+ date->year = tm.tm_year + 1900;
+
+ g_return_if_fail (g_date_valid_dmy (date->day, date->month, date->year));
+
+ date->dmy = TRUE;
+}
+
+
+/**
+ * g_date_set_time:
+ * @date: a #GDate.
+ * @time_: #GTime value to set.
+ *
+ * Sets the value of a date from a #GTime value.
+ * The time to date conversion is done using the user's current timezone.
+ *
+ * Deprecated: 2.10: Use g_date_set_time_t() instead.
+ */
+void
+g_date_set_time (GDate *date,
+ GTime time_)
+{
+ g_date_set_time_t (date, (time_t) time_);
+}
+
+/**
+ * g_date_set_time_val:
+ * @date: a #GDate
+ * @timeval: #GTimeVal value to set
+ *
+ * Sets the value of a date from a #GTimeVal value. Note that the
+ * @tv_usec member is ignored, because #GDate can't make use of the
+ * additional precision.
+ *
+ * The time to date conversion is done using the user's current timezone.
+ *
+ * Since: 2.10
+ */
+void
+g_date_set_time_val (GDate *date,
+ GTimeVal *timeval)
+{
+ g_date_set_time_t (date, (time_t) timeval->tv_sec);
+}
+
+void
+g_date_set_month (GDate *d,
+ GDateMonth m)
+{
+ g_return_if_fail (d != NULL);
+ g_return_if_fail (g_date_valid_month (m));
+
+ if (d->julian && !d->dmy) g_date_update_dmy(d);
+ d->julian = FALSE;
+
+ d->month = m;
+
+ if (g_date_valid_dmy (d->day, d->month, d->year))
+ d->dmy = TRUE;
+ else
+ d->dmy = FALSE;
+}
+
+void
+g_date_set_day (GDate *d,
+ GDateDay day)
+{
+ g_return_if_fail (d != NULL);
+ g_return_if_fail (g_date_valid_day (day));
+
+ if (d->julian && !d->dmy) g_date_update_dmy(d);
+ d->julian = FALSE;
+
+ d->day = day;
+
+ if (g_date_valid_dmy (d->day, d->month, d->year))
+ d->dmy = TRUE;
+ else
+ d->dmy = FALSE;
+}
+
+void
+g_date_set_year (GDate *d,
+ GDateYear y)
+{
+ g_return_if_fail (d != NULL);
+ g_return_if_fail (g_date_valid_year (y));
+
+ if (d->julian && !d->dmy) g_date_update_dmy(d);
+ d->julian = FALSE;
+
+ d->year = y;
+
+ if (g_date_valid_dmy (d->day, d->month, d->year))
+ d->dmy = TRUE;
+ else
+ d->dmy = FALSE;
+}
+
+void
+g_date_set_dmy (GDate *d,
+ GDateDay day,
+ GDateMonth m,
+ GDateYear y)
+{
+ g_return_if_fail (d != NULL);
+ g_return_if_fail (g_date_valid_dmy (day, m, y));
+
+ d->julian = FALSE;
+
+ d->month = m;
+ d->day = day;
+ d->year = y;
+
+ d->dmy = TRUE;
+}
+
+void
+g_date_set_julian (GDate *d,
+ guint32 j)
+{
+ g_return_if_fail (d != NULL);
+ g_return_if_fail (g_date_valid_julian (j));
+
+ d->julian_days = j;
+ d->julian = TRUE;
+ d->dmy = FALSE;
+}
+
+
+gboolean
+g_date_is_first_of_month (const GDate *d)
+{
+ g_return_val_if_fail (g_date_valid (d), FALSE);
+
+ if (!d->dmy)
+ g_date_update_dmy (d);
+
+ g_return_val_if_fail (d->dmy, FALSE);
+
+ if (d->day == 1) return TRUE;
+ else return FALSE;
+}
+
+gboolean
+g_date_is_last_of_month (const GDate *d)
+{
+ gint idx;
+
+ g_return_val_if_fail (g_date_valid (d), FALSE);
+
+ if (!d->dmy)
+ g_date_update_dmy (d);
+
+ g_return_val_if_fail (d->dmy, FALSE);
+
+ idx = g_date_is_leap_year (d->year) ? 1 : 0;
+
+ if (d->day == days_in_months[idx][d->month]) return TRUE;
+ else return FALSE;
+}
+
+void
+g_date_add_days (GDate *d,
+ guint ndays)
+{
+ g_return_if_fail (g_date_valid (d));
+
+ if (!d->julian)
+ g_date_update_julian (d);
+
+ g_return_if_fail (d->julian);
+
+ d->julian_days += ndays;
+ d->dmy = FALSE;
+}
+
+void
+g_date_subtract_days (GDate *d,
+ guint ndays)
+{
+ g_return_if_fail (g_date_valid (d));
+
+ if (!d->julian)
+ g_date_update_julian (d);
+
+ g_return_if_fail (d->julian);
+ g_return_if_fail (d->julian_days > ndays);
+
+ d->julian_days -= ndays;
+ d->dmy = FALSE;
+}
+
+void
+g_date_add_months (GDate *d,
+ guint nmonths)
+{
+ guint years, months;
+ gint idx;
+
+ g_return_if_fail (g_date_valid (d));
+
+ if (!d->dmy)
+ g_date_update_dmy (d);
+
+ g_return_if_fail (d->dmy);
+
+ nmonths += d->month - 1;
+
+ years = nmonths/12;
+ months = nmonths%12;
+
+ d->month = months + 1;
+ d->year += years;
+
+ idx = g_date_is_leap_year (d->year) ? 1 : 0;
+
+ if (d->day > days_in_months[idx][d->month])
+ d->day = days_in_months[idx][d->month];
+
+ d->julian = FALSE;
+
+ g_return_if_fail (g_date_valid (d));
+}
+
+void
+g_date_subtract_months (GDate *d,
+ guint nmonths)
+{
+ guint years, months;
+ gint idx;
+
+ g_return_if_fail (g_date_valid (d));
+
+ if (!d->dmy)
+ g_date_update_dmy (d);
+
+ g_return_if_fail (d->dmy);
+
+ years = nmonths/12;
+ months = nmonths%12;
+
+ g_return_if_fail (d->year > years);
+
+ d->year -= years;
+
+ if (d->month > months) d->month -= months;
+ else
+ {
+ months -= d->month;
+ d->month = 12 - months;
+ d->year -= 1;
+ }
+
+ idx = g_date_is_leap_year (d->year) ? 1 : 0;
+
+ if (d->day > days_in_months[idx][d->month])
+ d->day = days_in_months[idx][d->month];
+
+ d->julian = FALSE;
+
+ g_return_if_fail (g_date_valid (d));
+}
+
+void
+g_date_add_years (GDate *d,
+ guint nyears)
+{
+ g_return_if_fail (g_date_valid (d));
+
+ if (!d->dmy)
+ g_date_update_dmy (d);
+
+ g_return_if_fail (d->dmy);
+
+ d->year += nyears;
+
+ if (d->month == 2 && d->day == 29)
+ {
+ if (!g_date_is_leap_year (d->year))
+ d->day = 28;
+ }
+
+ d->julian = FALSE;
+}
+
+void
+g_date_subtract_years (GDate *d,
+ guint nyears)
+{
+ g_return_if_fail (g_date_valid (d));
+
+ if (!d->dmy)
+ g_date_update_dmy (d);
+
+ g_return_if_fail (d->dmy);
+ g_return_if_fail (d->year > nyears);
+
+ d->year -= nyears;
+
+ if (d->month == 2 && d->day == 29)
+ {
+ if (!g_date_is_leap_year (d->year))
+ d->day = 28;
+ }
+
+ d->julian = FALSE;
+}
+
+gboolean
+g_date_is_leap_year (GDateYear year)
+{
+ g_return_val_if_fail (g_date_valid_year (year), FALSE);
+
+ return ( (((year % 4) == 0) && ((year % 100) != 0)) ||
+ (year % 400) == 0 );
+}
+
+guint8
+g_date_get_days_in_month (GDateMonth month,
+ GDateYear year)
+{
+ gint idx;
+
+ g_return_val_if_fail (g_date_valid_year (year), 0);
+ g_return_val_if_fail (g_date_valid_month (month), 0);
+
+ idx = g_date_is_leap_year (year) ? 1 : 0;
+
+ return days_in_months[idx][month];
+}
+
+guint8
+g_date_get_monday_weeks_in_year (GDateYear year)
+{
+ GDate d;
+
+ g_return_val_if_fail (g_date_valid_year (year), 0);
+
+ g_date_clear (&d, 1);
+ g_date_set_dmy (&d, 1, 1, year);
+ if (g_date_get_weekday (&d) == G_DATE_MONDAY) return 53;
+ g_date_set_dmy (&d, 31, 12, year);
+ if (g_date_get_weekday (&d) == G_DATE_MONDAY) return 53;
+ if (g_date_is_leap_year (year))
+ {
+ g_date_set_dmy (&d, 2, 1, year);
+ if (g_date_get_weekday (&d) == G_DATE_MONDAY) return 53;
+ g_date_set_dmy (&d, 30, 12, year);
+ if (g_date_get_weekday (&d) == G_DATE_MONDAY) return 53;
+ }
+ return 52;
+}
+
+guint8
+g_date_get_sunday_weeks_in_year (GDateYear year)
+{
+ GDate d;
+
+ g_return_val_if_fail (g_date_valid_year (year), 0);
+
+ g_date_clear (&d, 1);
+ g_date_set_dmy (&d, 1, 1, year);
+ if (g_date_get_weekday (&d) == G_DATE_SUNDAY) return 53;
+ g_date_set_dmy (&d, 31, 12, year);
+ if (g_date_get_weekday (&d) == G_DATE_SUNDAY) return 53;
+ if (g_date_is_leap_year (year))
+ {
+ g_date_set_dmy (&d, 2, 1, year);
+ if (g_date_get_weekday (&d) == G_DATE_SUNDAY) return 53;
+ g_date_set_dmy (&d, 30, 12, year);
+ if (g_date_get_weekday (&d) == G_DATE_SUNDAY) return 53;
+ }
+ return 52;
+}
+
+gint
+g_date_compare (const GDate *lhs,
+ const GDate *rhs)
+{
+ g_return_val_if_fail (lhs != NULL, 0);
+ g_return_val_if_fail (rhs != NULL, 0);
+ g_return_val_if_fail (g_date_valid (lhs), 0);
+ g_return_val_if_fail (g_date_valid (rhs), 0);
+
+ /* Remember the self-comparison case! I think it works right now. */
+
+ while (TRUE)
+ {
+ if (lhs->julian && rhs->julian)
+ {
+ if (lhs->julian_days < rhs->julian_days) return -1;
+ else if (lhs->julian_days > rhs->julian_days) return 1;
+ else return 0;
+ }
+ else if (lhs->dmy && rhs->dmy)
+ {
+ if (lhs->year < rhs->year) return -1;
+ else if (lhs->year > rhs->year) return 1;
+ else
+ {
+ if (lhs->month < rhs->month) return -1;
+ else if (lhs->month > rhs->month) return 1;
+ else
+ {
+ if (lhs->day < rhs->day) return -1;
+ else if (lhs->day > rhs->day) return 1;
+ else return 0;
+ }
+
+ }
+
+ }
+ else
+ {
+ if (!lhs->julian) g_date_update_julian (lhs);
+ if (!rhs->julian) g_date_update_julian (rhs);
+ g_return_val_if_fail (lhs->julian, 0);
+ g_return_val_if_fail (rhs->julian, 0);
+ }
+
+ }
+ return 0; /* warnings */
+}
+
+
+void
+g_date_to_struct_tm (const GDate *d,
+ struct tm *tm)
+{
+ GDateWeekday day;
+
+ g_return_if_fail (g_date_valid (d));
+ g_return_if_fail (tm != NULL);
+
+ if (!d->dmy)
+ g_date_update_dmy (d);
+
+ g_return_if_fail (d->dmy);
+
+ /* zero all the irrelevant fields to be sure they're valid */
+
+ /* On Linux and maybe other systems, there are weird non-POSIX
+ * fields on the end of struct tm that choke strftime if they
+ * contain garbage. So we need to 0 the entire struct, not just the
+ * fields we know to exist.
+ */
+
+ memset (tm, 0x0, sizeof (struct tm));
+
+ tm->tm_mday = d->day;
+ tm->tm_mon = d->month - 1; /* 0-11 goes in tm */
+ tm->tm_year = ((int)d->year) - 1900; /* X/Open says tm_year can be negative */
+
+ day = g_date_get_weekday (d);
+ if (day == 7) day = 0; /* struct tm wants days since Sunday, so Sunday is 0 */
+
+ tm->tm_wday = (int)day;
+
+ tm->tm_yday = g_date_get_day_of_year (d) - 1; /* 0 to 365 */
+ tm->tm_isdst = -1; /* -1 means "information not available" */
+}
+
+void
+g_date_clamp (GDate *date,
+ const GDate *min_date,
+ const GDate *max_date)
+{
+ g_return_if_fail (g_date_valid (date));
+
+ if (min_date != NULL)
+ g_return_if_fail (g_date_valid (min_date));
+
+ if (max_date != NULL)
+ g_return_if_fail (g_date_valid (max_date));
+
+ if (min_date != NULL && max_date != NULL)
+ g_return_if_fail (g_date_compare (min_date, max_date) <= 0);
+
+ if (min_date && g_date_compare (date, min_date) < 0)
+ *date = *min_date;
+
+ if (max_date && g_date_compare (max_date, date) < 0)
+ *date = *max_date;
+}
+
+void
+g_date_order (GDate *date1,
+ GDate *date2)
+{
+ g_return_if_fail (g_date_valid (date1));
+ g_return_if_fail (g_date_valid (date2));
+
+ if (g_date_compare (date1, date2) > 0)
+ {
+ GDate tmp = *date1;
+ *date1 = *date2;
+ *date2 = tmp;
+ }
+}
+
+#ifdef G_OS_WIN32
+static gsize
+win32_strftime_helper (const GDate *d,
+ const gchar *format,
+ const struct tm *tm,
+ gchar *s,
+ gsize slen)
+{
+ SYSTEMTIME systemtime;
+ TIME_ZONE_INFORMATION tzinfo;
+ LCID lcid;
+ int n, k;
+ GArray *result;
+ const gchar *p;
+ gunichar c;
+ const wchar_t digits[] = L"0123456789";
+ gchar *convbuf;
+ glong convlen = 0;
+ gsize retval;
+
+ systemtime.wYear = tm->tm_year + 1900;
+ systemtime.wMonth = tm->tm_mon + 1;
+ systemtime.wDayOfWeek = tm->tm_wday;
+ systemtime.wDay = tm->tm_mday;
+ systemtime.wHour = tm->tm_hour;
+ systemtime.wMinute = tm->tm_min;
+ systemtime.wSecond = tm->tm_sec;
+ systemtime.wMilliseconds = 0;
+
+ lcid = GetThreadLocale ();
+ result = g_array_sized_new (FALSE, FALSE, sizeof (wchar_t), MAX (128, strlen (format) * 2));
+
+ p = format;
+ while (*p)
+ {
+ c = g_utf8_get_char (p);
+ if (c == '%')
+ {
+ p = g_utf8_next_char (p);
+ if (!*p)
+ {
+ s[0] = '\0';
+ g_array_free (result, TRUE);
+
+ return 0;
+ }
+
+ c = g_utf8_get_char (p);
+ if (c == 'E' || c == 'O')
+ {
+ /* Ignore modified conversion specifiers for now. */
+ p = g_utf8_next_char (p);
+ if (!*p)
+ {
+ s[0] = '\0';
+ g_array_free (result, TRUE);
+
+ return 0;
+ }
+
+ c = g_utf8_get_char (p);
+ }
+
+ switch (c)
+ {
+ case 'a':
+ if (systemtime.wDayOfWeek == 0)
+ k = 6;
+ else
+ k = systemtime.wDayOfWeek - 1;
+ n = GetLocaleInfoW (lcid, LOCALE_SABBREVDAYNAME1+k, NULL, 0);
+ g_array_set_size (result, result->len + n);
+ GetLocaleInfoW (lcid, LOCALE_SABBREVDAYNAME1+k, ((wchar_t *) result->data) + result->len - n, n);
+ g_array_set_size (result, result->len - 1);
+ break;
+ case 'A':
+ if (systemtime.wDayOfWeek == 0)
+ k = 6;
+ else
+ k = systemtime.wDayOfWeek - 1;
+ n = GetLocaleInfoW (lcid, LOCALE_SDAYNAME1+k, NULL, 0);
+ g_array_set_size (result, result->len + n);
+ GetLocaleInfoW (lcid, LOCALE_SDAYNAME1+k, ((wchar_t *) result->data) + result->len - n, n);
+ g_array_set_size (result, result->len - 1);
+ break;
+ case 'b':
+ case 'h':
+ n = GetLocaleInfoW (lcid, LOCALE_SABBREVMONTHNAME1+systemtime.wMonth-1, NULL, 0);
+ g_array_set_size (result, result->len + n);
+ GetLocaleInfoW (lcid, LOCALE_SABBREVMONTHNAME1+systemtime.wMonth-1, ((wchar_t *) result->data) + result->len - n, n);
+ g_array_set_size (result, result->len - 1);
+ break;
+ case 'B':
+ n = GetLocaleInfoW (lcid, LOCALE_SMONTHNAME1+systemtime.wMonth-1, NULL, 0);
+ g_array_set_size (result, result->len + n);
+ GetLocaleInfoW (lcid, LOCALE_SMONTHNAME1+systemtime.wMonth-1, ((wchar_t *) result->data) + result->len - n, n);
+ g_array_set_size (result, result->len - 1);
+ break;
+ case 'c':
+ n = GetDateFormatW (lcid, 0, &systemtime, NULL, NULL, 0);
+ if (n > 0)
+ {
+ g_array_set_size (result, result->len + n);
+ GetDateFormatW (lcid, 0, &systemtime, NULL, ((wchar_t *) result->data) + result->len - n, n);
+ g_array_set_size (result, result->len - 1);
+ }
+ g_array_append_vals (result, L" ", 1);
+ n = GetTimeFormatW (lcid, 0, &systemtime, NULL, NULL, 0);
+ if (n > 0)
+ {
+ g_array_set_size (result, result->len + n);
+ GetTimeFormatW (lcid, 0, &systemtime, NULL, ((wchar_t *) result->data) + result->len - n, n);
+ g_array_set_size (result, result->len - 1);
+ }
+ break;
+ case 'C':
+ g_array_append_vals (result, digits + systemtime.wYear/1000, 1);
+ g_array_append_vals (result, digits + (systemtime.wYear/1000)%10, 1);
+ break;
+ case 'd':
+ g_array_append_vals (result, digits + systemtime.wDay/10, 1);
+ g_array_append_vals (result, digits + systemtime.wDay%10, 1);
+ break;
+ case 'D':
+ g_array_append_vals (result, digits + systemtime.wMonth/10, 1);
+ g_array_append_vals (result, digits + systemtime.wMonth%10, 1);
+ g_array_append_vals (result, L"/", 1);
+ g_array_append_vals (result, digits + systemtime.wDay/10, 1);
+ g_array_append_vals (result, digits + systemtime.wDay%10, 1);
+ g_array_append_vals (result, L"/", 1);
+ g_array_append_vals (result, digits + (systemtime.wYear/10)%10, 1);
+ g_array_append_vals (result, digits + systemtime.wYear%10, 1);
+ break;
+ case 'e':
+ if (systemtime.wDay >= 10)
+ g_array_append_vals (result, digits + systemtime.wDay/10, 1);
+ else
+ g_array_append_vals (result, L" ", 1);
+ g_array_append_vals (result, digits + systemtime.wDay%10, 1);
+ break;
+
+ /* A GDate has no time fields, so for now we can
+ * hardcode all time conversions into zeros (or 12 for
+ * %I). The alternative code snippets in the #else
+ * branches are here ready to be taken into use when
+ * needed by a g_strftime() or g_date_and_time_format()
+ * or whatever.
+ */
+ case 'H':
+#if 1
+ g_array_append_vals (result, L"00", 2);
+#else
+ g_array_append_vals (result, digits + systemtime.wHour/10, 1);
+ g_array_append_vals (result, digits + systemtime.wHour%10, 1);
+#endif
+ break;
+ case 'I':
+#if 1
+ g_array_append_vals (result, L"12", 2);
+#else
+ if (systemtime.wHour == 0)
+ g_array_append_vals (result, L"12", 2);
+ else
+ {
+ g_array_append_vals (result, digits + (systemtime.wHour%12)/10, 1);
+ g_array_append_vals (result, digits + (systemtime.wHour%12)%10, 1);
+ }
+#endif
+ break;
+ case 'j':
+ g_array_append_vals (result, digits + (tm->tm_yday+1)/100, 1);
+ g_array_append_vals (result, digits + ((tm->tm_yday+1)/10)%10, 1);
+ g_array_append_vals (result, digits + (tm->tm_yday+1)%10, 1);
+ break;
+ case 'm':
+ g_array_append_vals (result, digits + systemtime.wMonth/10, 1);
+ g_array_append_vals (result, digits + systemtime.wMonth%10, 1);
+ break;
+ case 'M':
+#if 1
+ g_array_append_vals (result, L"00", 2);
+#else
+ g_array_append_vals (result, digits + systemtime.wMinute/10, 1);
+ g_array_append_vals (result, digits + systemtime.wMinute%10, 1);
+#endif
+ break;
+ case 'n':
+ g_array_append_vals (result, L"\n", 1);
+ break;
+ case 'p':
+ n = GetTimeFormatW (lcid, 0, &systemtime, L"tt", NULL, 0);
+ if (n > 0)
+ {
+ g_array_set_size (result, result->len + n);
+ GetTimeFormatW (lcid, 0, &systemtime, L"tt", ((wchar_t *) result->data) + result->len - n, n);
+ g_array_set_size (result, result->len - 1);
+ }
+ break;
+ case 'r':
+ /* This is a rather odd format. Hard to say what to do.
+ * Let's always use the POSIX %I:%M:%S %p
+ */
+#if 1
+ g_array_append_vals (result, L"12:00:00", 8);
+#else
+ if (systemtime.wHour == 0)
+ g_array_append_vals (result, L"12", 2);
+ else
+ {
+ g_array_append_vals (result, digits + (systemtime.wHour%12)/10, 1);
+ g_array_append_vals (result, digits + (systemtime.wHour%12)%10, 1);
+ }
+ g_array_append_vals (result, L":", 1);
+ g_array_append_vals (result, digits + systemtime.wMinute/10, 1);
+ g_array_append_vals (result, digits + systemtime.wMinute%10, 1);
+ g_array_append_vals (result, L":", 1);
+ g_array_append_vals (result, digits + systemtime.wSecond/10, 1);
+ g_array_append_vals (result, digits + systemtime.wSecond%10, 1);
+ g_array_append_vals (result, L" ", 1);
+#endif
+ n = GetTimeFormatW (lcid, 0, &systemtime, L"tt", NULL, 0);
+ if (n > 0)
+ {
+ g_array_set_size (result, result->len + n);
+ GetTimeFormatW (lcid, 0, &systemtime, L"tt", ((wchar_t *) result->data) + result->len - n, n);
+ g_array_set_size (result, result->len - 1);
+ }
+ break;
+ case 'R':
+#if 1
+ g_array_append_vals (result, L"00:00", 5);
+#else
+ g_array_append_vals (result, digits + systemtime.wHour/10, 1);
+ g_array_append_vals (result, digits + systemtime.wHour%10, 1);
+ g_array_append_vals (result, L":", 1);
+ g_array_append_vals (result, digits + systemtime.wMinute/10, 1);
+ g_array_append_vals (result, digits + systemtime.wMinute%10, 1);
+#endif
+ break;
+ case 'S':
+#if 1
+ g_array_append_vals (result, L"00", 2);
+#else
+ g_array_append_vals (result, digits + systemtime.wSecond/10, 1);
+ g_array_append_vals (result, digits + systemtime.wSecond%10, 1);
+#endif
+ break;
+ case 't':
+ g_array_append_vals (result, L"\t", 1);
+ break;
+ case 'T':
+#if 1
+ g_array_append_vals (result, L"00:00:00", 8);
+#else
+ g_array_append_vals (result, digits + systemtime.wHour/10, 1);
+ g_array_append_vals (result, digits + systemtime.wHour%10, 1);
+ g_array_append_vals (result, L":", 1);
+ g_array_append_vals (result, digits + systemtime.wMinute/10, 1);
+ g_array_append_vals (result, digits + systemtime.wMinute%10, 1);
+ g_array_append_vals (result, L":", 1);
+ g_array_append_vals (result, digits + systemtime.wSecond/10, 1);
+ g_array_append_vals (result, digits + systemtime.wSecond%10, 1);
+#endif
+ break;
+ case 'u':
+ if (systemtime.wDayOfWeek == 0)
+ g_array_append_vals (result, L"7", 1);
+ else
+ g_array_append_vals (result, digits + systemtime.wDayOfWeek, 1);
+ break;
+ case 'U':
+ n = g_date_get_sunday_week_of_year (d);
+ g_array_append_vals (result, digits + n/10, 1);
+ g_array_append_vals (result, digits + n%10, 1);
+ break;
+ case 'V':
+ n = g_date_get_iso8601_week_of_year (d);
+ g_array_append_vals (result, digits + n/10, 1);
+ g_array_append_vals (result, digits + n%10, 1);
+ break;
+ case 'w':
+ g_array_append_vals (result, digits + systemtime.wDayOfWeek, 1);
+ break;
+ case 'W':
+ n = g_date_get_monday_week_of_year (d);
+ g_array_append_vals (result, digits + n/10, 1);
+ g_array_append_vals (result, digits + n%10, 1);
+ break;
+ case 'x':
+ n = GetDateFormatW (lcid, 0, &systemtime, NULL, NULL, 0);
+ if (n > 0)
+ {
+ g_array_set_size (result, result->len + n);
+ GetDateFormatW (lcid, 0, &systemtime, NULL, ((wchar_t *) result->data) + result->len - n, n);
+ g_array_set_size (result, result->len - 1);
+ }
+ break;
+ case 'X':
+ n = GetTimeFormatW (lcid, 0, &systemtime, NULL, NULL, 0);
+ if (n > 0)
+ {
+ g_array_set_size (result, result->len + n);
+ GetTimeFormatW (lcid, 0, &systemtime, NULL, ((wchar_t *) result->data) + result->len - n, n);
+ g_array_set_size (result, result->len - 1);
+ }
+ break;
+ case 'y':
+ g_array_append_vals (result, digits + (systemtime.wYear/10)%10, 1);
+ g_array_append_vals (result, digits + systemtime.wYear%10, 1);
+ break;
+ case 'Y':
+ g_array_append_vals (result, digits + systemtime.wYear/1000, 1);
+ g_array_append_vals (result, digits + (systemtime.wYear/100)%10, 1);
+ g_array_append_vals (result, digits + (systemtime.wYear/10)%10, 1);
+ g_array_append_vals (result, digits + systemtime.wYear%10, 1);
+ break;
+ case 'Z':
+ n = GetTimeZoneInformation (&tzinfo);
+ if (n == TIME_ZONE_ID_UNKNOWN)
+ ;
+ else if (n == TIME_ZONE_ID_STANDARD)
+ g_array_append_vals (result, tzinfo.StandardName, wcslen (tzinfo.StandardName));
+ else if (n == TIME_ZONE_ID_DAYLIGHT)
+ g_array_append_vals (result, tzinfo.DaylightName, wcslen (tzinfo.DaylightName));
+ break;
+ case '%':
+ g_array_append_vals (result, L"%", 1);
+ break;
+ }
+ }
+ else if (c <= 0xFFFF)
+ {
+ wchar_t wc = c;
+ g_array_append_vals (result, &wc, 1);
+ }
+ else
+ {
+ glong nwc;
+ wchar_t *ws;
+
+ ws = g_ucs4_to_utf16 (&c, 1, NULL, &nwc, NULL);
+ g_array_append_vals (result, ws, nwc);
+ g_free (ws);
+ }
+ p = g_utf8_next_char (p);
+ }
+
+ convbuf = g_utf16_to_utf8 ((wchar_t *) result->data, result->len, NULL, &convlen, NULL);
+ g_array_free (result, TRUE);
+
+ if (!convbuf)
+ {
+ s[0] = '\0';
+ return 0;
+ }
+
+ if (slen <= convlen)
+ {
+ /* Ensure only whole characters are copied into the buffer. */
+ gchar *end = g_utf8_find_prev_char (convbuf, convbuf + slen);
+ g_assert (end != NULL);
+ convlen = end - convbuf;
+
+ /* Return 0 because the buffer isn't large enough. */
+ retval = 0;
+ }
+ else
+ retval = convlen;
+
+ memcpy (s, convbuf, convlen);
+ s[convlen] = '\0';
+ g_free (convbuf);
+
+ return retval;
+}
+
+#endif
+
+gsize
+g_date_strftime (gchar *s,
+ gsize slen,
+ const gchar *format,
+ const GDate *d)
+{
+ struct tm tm;
+#ifndef G_OS_WIN32
+ gsize locale_format_len = 0;
+ gchar *locale_format;
+ gsize tmplen;
+ gchar *tmpbuf;
+ gsize tmpbufsize;
+ gsize convlen = 0;
+ gchar *convbuf;
+ GError *error = NULL;
+ gsize retval;
+#endif
+
+ g_return_val_if_fail (g_date_valid (d), 0);
+ g_return_val_if_fail (slen > 0, 0);
+ g_return_val_if_fail (format != NULL, 0);
+ g_return_val_if_fail (s != NULL, 0);
+
+ g_date_to_struct_tm (d, &tm);
+
+#ifdef G_OS_WIN32
+ if (!g_utf8_validate (format, -1, NULL))
+ {
+ s[0] = '\0';
+ return 0;
+ }
+ return win32_strftime_helper (d, format, &tm, s, slen);
+#else
+
+ locale_format = g_locale_from_utf8 (format, -1, NULL, &locale_format_len, &error);
+
+ if (error)
+ {
+ g_warning (G_STRLOC "Error converting format to locale encoding: %s\n", error->message);
+ g_error_free (error);
+
+ s[0] = '\0';
+ return 0;
+ }
+
+ tmpbufsize = MAX (128, locale_format_len * 2);
+ while (TRUE)
+ {
+ tmpbuf = g_malloc (tmpbufsize);
+
+ /* Set the first byte to something other than '\0', to be able to
+ * recognize whether strftime actually failed or just returned "".
+ */
+ tmpbuf[0] = '\1';
+ tmplen = strftime (tmpbuf, tmpbufsize, locale_format, &tm);
+
+ if (tmplen == 0 && tmpbuf[0] != '\0')
+ {
+ g_free (tmpbuf);
+ tmpbufsize *= 2;
+
+ if (tmpbufsize > 65536)
+ {
+ g_warning (G_STRLOC "Maximum buffer size for g_date_strftime exceeded: giving up\n");
+ g_free (locale_format);
+
+ s[0] = '\0';
+ return 0;
+ }
+ }
+ else
+ break;
+ }
+ g_free (locale_format);
+
+ convbuf = g_locale_to_utf8 (tmpbuf, tmplen, NULL, &convlen, &error);
+ g_free (tmpbuf);
+
+ if (error)
+ {
+ g_warning (G_STRLOC "Error converting results of strftime to UTF-8: %s\n", error->message);
+ g_error_free (error);
+
+ s[0] = '\0';
+ return 0;
+ }
+
+ if (slen <= convlen)
+ {
+ /* Ensure only whole characters are copied into the buffer.
+ */
+ gchar *end = g_utf8_find_prev_char (convbuf, convbuf + slen);
+ g_assert (end != NULL);
+ convlen = end - convbuf;
+
+ /* Return 0 because the buffer isn't large enough.
+ */
+ retval = 0;
+ }
+ else
+ retval = convlen;
+
+ memcpy (s, convbuf, convlen);
+ s[convlen] = '\0';
+ g_free (convbuf);
+
+ return retval;
+#endif
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-15 06:00:43 +0000