Tizen 2.0 Releasesubmit/tizen_2.0/20130215.192150accepted/tizen_2.0/20130215.204934tizen_2.0

1 files changed, 1294 insertions, 0 deletions

diff --git a/glib-1.2.10/gdate.c b/glib-1.2.10/gdate.c
new file mode 100644
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--- /dev/null
+++ b/glib-1.2.10/gdate.c
@@ -0,0 +1,1294 @@
+/* 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 Library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library 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 1997-1999.  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
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include "glib.h"
+
+#include <time.h>
+#include <string.h>
+#include <ctype.h>
+#include <stdlib.h>
+#include <locale.h>
+
+GDate*
+g_date_new ()
+{
+  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 (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 (GDate *d)
+{
+  GDateYear year;
+  gint index;
+  
+  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 */
+  
+  index = g_date_is_leap_year (d->year) ? 1 : 0;
+  
+  d->julian_days += days_in_year[index][d->month] + d->day;
+  
+  g_return_if_fail (g_date_valid_julian (d->julian_days));
+  
+  d->julian = TRUE;
+}
+
+static void 
+g_date_update_dmy (GDate *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_weekday (GDate *d)
+{
+  g_return_val_if_fail (d != NULL, G_DATE_BAD_WEEKDAY);
+  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_month (GDate *d)
+{
+  g_return_val_if_fail (d != NULL, G_DATE_BAD_MONTH);
+  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_year (GDate *d)
+{
+  g_return_val_if_fail (d != NULL, G_DATE_BAD_YEAR);
+  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_day (GDate *d)
+{
+  g_return_val_if_fail (d != NULL, G_DATE_BAD_DAY);
+  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_julian (GDate *d)
+{
+  g_return_val_if_fail (d != NULL, G_DATE_BAD_JULIAN);
+  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_day_of_year (GDate *d)
+{
+  gint index;
+  
+  g_return_val_if_fail (d != NULL, 0);
+  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);  
+  
+  index = g_date_is_leap_year (d->year) ? 1 : 0;
+  
+  return (days_in_year[index][d->month] + d->day);
+}
+
+guint        
+g_date_monday_week_of_year (GDate *d)
+{
+  GDateWeekday wd;
+  guint day;
+  GDate first;
+  
+  g_return_val_if_fail (d != NULL, 0);
+  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_weekday (&first) - 1; /* make Monday day 0 */
+  day = g_date_day_of_year (d) - 1;
+  
+  return ((day + wd)/7U + (wd == 0 ? 1 : 0));
+}
+
+guint        
+g_date_sunday_week_of_year (GDate *d)
+{
+  GDateWeekday wd;
+  guint day;
+  GDate first;
+  
+  g_return_val_if_fail (d != NULL, 0);
+  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_weekday (&first);
+  if (wd == 7) wd = 0; /* make Sunday day 0 */
+  day = g_date_day_of_year (d) - 1;
+  
+  return ((day + wd)/7U + (wd == 0 ? 1 : 0));
+}
+
+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] = 
+{ 
+  "Error", NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL 
+};
+
+static gchar *short_month_names[13] = 
+{
+  "Error", NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, 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 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;
+
+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 = str;
+  pt->num_ints = 0;
+  while (*s && pt->num_ints < 4) 
+    {
+      
+      i = 0;
+      while (*s && 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 lcstr[128];
+      int i = 1;
+      
+      strncpy (lcstr, str, 127);
+      g_strdown (lcstr);
+      
+      while (i < 13)
+        {
+          if (long_month_names[i] != NULL) 
+            {
+              const gchar *found = strstr (lcstr, long_month_names[i]);
+	      
+              if (found != NULL)
+                {
+                  pt->month = i;
+		  return;
+                }
+            }
+	  
+          if (short_month_names[i] != NULL) 
+            {
+              const gchar *found = strstr (lcstr, short_month_names[i]);
+	      
+              if (found != NULL)
+                {
+                  pt->month = i;
+                  return;
+                }
+            }
+
+          ++i;
+        }      
+    }
+}
+
+/* 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);
+      
+      while (i < 13) 
+        {
+          g_date_set_dmy (&d, 1, i, 1);
+	  
+          g_return_if_fail (g_date_valid (&d));
+	  
+          g_date_strftime (buf, 127, "%b", &d);
+          g_free (short_month_names[i]);
+          g_strdown (buf);
+          short_month_names[i] = g_strdup (buf);
+	  
+          
+	  
+          g_date_strftime (buf, 127, "%B", &d);
+          g_free (long_month_names[i]);
+          g_strdown (buf);
+          long_month_names[i] = g_strdup (buf);
+          
+          ++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:
+              /* leave it unchanged */
+              break;
+            }
+          ++i;
+        }
+      
+#ifdef G_ENABLE_DEBUG
+      g_message ("**GDate prepared a new set of locale-specific parse rules.");
+      i = 1;
+      while (i < 13) 
+        {
+          g_message ("  %s   %s", long_month_names[i], short_month_names[i]);
+          ++i;
+        }
+      if (using_twodigit_years)
+        {
+          g_message ("**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;
+          }
+        g_message ("**Order: %s, %s, %s", strings[0], strings[1], strings[2]);
+        g_message ("**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);
+  
+#ifdef G_ENABLE_DEBUG
+  g_message ("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);
+#endif
+  
+  
+  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 (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 == 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 
+    g_message ("Rejected DMY %u %u %u", day, m, y);
+#endif
+  G_UNLOCK (g_date_global);
+}
+
+void         
+g_date_set_time (GDate *d,
+		 GTime  time)
+{
+  time_t t = time;
+  struct tm tm;
+  
+  g_return_if_fail (d != NULL);
+  
+#ifdef HAVE_LOCALTIME_R
+  localtime_r (&t, &tm);
+#else
+  {
+    struct tm *ptm = localtime (&t);
+    g_assert (ptm);
+    memcpy ((void *) &tm, (void *) ptm, sizeof(struct tm));
+  }
+#endif
+  
+  d->julian = FALSE;
+  
+  d->month = tm.tm_mon + 1;
+  d->day   = tm.tm_mday;
+  d->year  = tm.tm_year + 1900;
+  
+  g_return_if_fail (g_date_valid_dmy (d->day, d->month, d->year));
+  
+  d->dmy    = TRUE;
+}
+
+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 (GDate *d)
+{
+  g_return_val_if_fail (d != NULL, FALSE);
+  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 (GDate *d)
+{
+  gint index;
+  
+  g_return_val_if_fail (d != NULL, FALSE);
+  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);  
+  
+  index = g_date_is_leap_year (d->year) ? 1 : 0;
+  
+  if (d->day == days_in_months[index][d->month]) return TRUE;
+  else return FALSE;
+}
+
+void         
+g_date_add_days (GDate *d, guint ndays)
+{
+  g_return_if_fail (d != NULL);
+  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 (d != NULL);
+  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 index;
+  
+  g_return_if_fail (d != NULL);
+  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;
+  
+  index = g_date_is_leap_year (d->year) ? 1 : 0;
+  
+  if (d->day > days_in_months[index][d->month])
+    d->day = days_in_months[index][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 index;
+  
+  g_return_if_fail (d != NULL);
+  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;
+    }
+  
+  index = g_date_is_leap_year (d->year) ? 1 : 0;
+  
+  if (d->day > days_in_months[index][d->month])
+    d->day = days_in_months[index][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 (d != NULL);
+  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 (d != NULL);
+  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_days_in_month (GDateMonth month, 
+                      GDateYear  year)
+{
+  gint index;
+  
+  g_return_val_if_fail (g_date_valid_year (year), 0);
+  g_return_val_if_fail (g_date_valid_month (month), 0);
+  
+  index = g_date_is_leap_year (year) ? 1 : 0;
+  
+  return days_in_months[index][month];
+}
+
+guint8       
+g_date_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_weekday (&d) == G_DATE_MONDAY) return 53;
+  g_date_set_dmy (&d, 31, 12, year);
+  if (g_date_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_weekday (&d) == G_DATE_MONDAY) return 53;
+      g_date_set_dmy (&d, 30, 12, year);
+      if (g_date_weekday (&d) == G_DATE_MONDAY) return 53;
+    }
+  return 52;
+}
+
+guint8       
+g_date_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_weekday (&d) == G_DATE_SUNDAY) return 53;
+  g_date_set_dmy (&d, 31, 12, year);
+  if (g_date_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_weekday (&d) == G_DATE_SUNDAY) return 53;
+      g_date_set_dmy (&d, 30, 12, year);
+      if (g_date_weekday (&d) == G_DATE_SUNDAY) return 53;
+    }
+  return 52;
+}
+
+gint         
+g_date_compare (GDate     *lhs, 
+                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 (GDate      *d, 
+                     struct tm   *tm)
+{
+  GDateWeekday day;
+     
+  g_return_if_fail (d != NULL);
+  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_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_day_of_year (d) - 1; /* 0 to 365 */
+  tm->tm_isdst = -1; /* -1 means "information not available" */
+}
+
+gsize     
+g_date_strftime (gchar       *s, 
+                 gsize        slen, 
+                 const gchar *format, 
+                 GDate       *d)
+{
+  struct tm tm;
+  gsize retval;
+  
+  g_return_val_if_fail (d != NULL, 0);
+  g_return_val_if_fail (g_date_valid (d), 0);
+  g_return_val_if_fail (slen > 0, 0); 
+  g_return_val_if_fail (format != 0, 0);
+  g_return_val_if_fail (s != 0, 0);
+  
+  g_date_to_struct_tm (d, &tm);
+  
+  retval = strftime (s, slen, format, &tm);
+  if (retval == 0)
+    {
+      /* If retval == 0, the contents of s are undefined.  We define
+       *  them. 
+       */
+      s[0] = '\0';
+    }
+  return retval;
+}