src/calendar/gui/misc.c

   1 /*
   2  * Evolution calendar - Miscellaneous utility functions
   3  *
   4  * This program is free software; you can redistribute it and/or modify it
   5  * under the terms of the GNU Lesser General Public License as published by
   6  * the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope that it will be useful, but
   9  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  10  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  11  * for more details.
  12  *
  13  * You should have received a copy of the GNU Lesser General Public License
  14  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  15  *
  16  *
  17  * Authors:
  18  *              Federico Mena-Quintero <federico@ximian.com>
  19  *
  20  * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
  21  *
  22  */
  23
  24 #include "evolution-config.h"
  25
  26 #include <ctype.h>
  27 #include <time.h>
  28 #include <glib/gi18n.h>
  29
  30 #include "misc.h"
  31
  32 /**
  33  * string_is_empty:
  34  * @value: A string.
  35  *
  36  * Returns whether a string is NULL, the empty string, or completely made up of
  37  * whitespace characters.
  38  *
  39  * Return value: TRUE if the string is empty, FALSE otherwise.
  40  **/
  41 gboolean
  42 string_is_empty (const gchar *value)
  43 {
  44         const gchar *p;
  45         gboolean empty;
  46
  47         empty = TRUE;
  48
  49         if (value) {
  50                 p = value;
  51                 while (*p) {
  52                         if (!isspace ((guchar) *p)) {
  53                                 empty = FALSE;
  54                                 break;
  55                         }
  56                         p++;
  57                 }
  58         }
  59         return empty;
  60
  61 }
  62
  63 gint
  64 get_position_in_array (GPtrArray *objects,
  65                        gpointer item)
  66 {
  67         gint i;
  68
  69         for (i = 0; i < objects->len; i++) {
  70                 if (g_ptr_array_index (objects, i) == item)
  71                         return i;
  72         }
  73
  74         return -1;
  75 }
  76
  77 gchar *
  78 calculate_time (time_t start,
  79                 time_t end)
  80 {
  81         time_t difference = end - start;
  82         gchar *str;
  83         gint   hours, minutes;
  84         gchar *times[5];
  85         gchar *joined;
  86         gint   i;
  87
  88         i = 0;
  89         if (difference >= 24 * 3600) {
  90                 gint days;
  91
  92                 days = difference / (24 * 3600);
  93                 difference %= (24 * 3600);
  94
  95                 times[i++] = g_strdup_printf (ngettext ("%d day", "%d days", days), days);
  96         }
  97         if (difference >= 3600) {
  98                 hours = difference / 3600;
  99                 difference %= 3600;
 100
 101                 times[i++] = g_strdup_printf (ngettext ("%d hour", "%d hours", hours), hours);
 102         }
 103         if (difference >= 60) {
 104                 minutes = difference / 60;
 105                 difference %= 60;
 106
 107                 times[i++] = g_strdup_printf (ngettext ("%d minute", "%d minutes", minutes), minutes);
 108         }
 109         if (i == 0 || difference != 0) {
 110                 /* TRANSLATORS: here, "second" is the time division (like "minute"), not the ordinal number (like "third") */
 111                 times[i++] = g_strdup_printf (ngettext ("%d second", "%d seconds", difference), (gint) difference);
 112         }
 113
 114         times[i] = NULL;
 115         joined = g_strjoinv (" ", times);
 116         str = g_strconcat ("(", joined, ")", NULL);
 117         while (i > 0)
 118                 g_free (times[--i]);
 119         g_free (joined);
 120
 121         return str;
 122 }