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1+
2+#include "relativetimeformatter.h"
3+
4+#include <QDateTime>
5+
6+#include <QDebug>
7+
8+#include <glib.h>
9+#include <locale.h>
10+#include <langinfo.h>
11+#include <libintl.h>
12+
13+RelativeTimeFormatter::RelativeTimeFormatter(QObject *parent)
14+ : GDateTimeFormatter(parent)
15+{
16+}
17+
18+/* Check the system locale setting to see if the format is 24-hour
19+ time or 12-hour time */
20+gboolean
21+is_locale_12h(void)
22+{
23+ int i;
24+ static const char *formats_24h[] = {"%H", "%R", "%T", "%OH", "%k", NULL};
25+ const char* t_fmt = nl_langinfo(T_FMT);
26+
27+ for (i=0; formats_24h[i]!=NULL; i++)
28+ if (strstr(t_fmt, formats_24h[i]) != NULL)
29+ return FALSE;
30+
31+ return TRUE;
32+}
33+
34+
35+typedef enum
36+{
37+ DATE_PROXIMITY_TODAY,
38+ DATE_PROXIMITY_YESTERDAY,
39+ DATE_PROXIMITY_WEEK,
40+ DATE_PROXIMITY_FAR
41+}
42+date_proximity_t;
43+
44+static date_proximity_t
45+getDateProximity(GDateTime* now, GDateTime* time)
46+{
47+ date_proximity_t prox = DATE_PROXIMITY_FAR;
48+ gint now_year, now_month, now_day;
49+ gint time_year, time_month, time_day;
50+
51+ // does it happen today?
52+ g_date_time_get_ymd(now, &now_year, &now_month, &now_day);
53+ g_date_time_get_ymd(time, &time_year, &time_month, &time_day);
54+ if ((now_year == time_year) && (now_month == time_month) && (now_day == time_day)) {
55+ return DATE_PROXIMITY_TODAY;
56+ }
57+
58+ // does it happen tomorrow?
59+ GDateTime* tomorrow = g_date_time_add_days(now, -1);
60+ gint tom_year, tom_month, tom_day;
61+ g_date_time_get_ymd(tomorrow, &tom_year, &tom_month, &tom_day);
62+ if ((tom_year == time_year) && (tom_month == time_month) && (tom_day == time_day))
63+ return DATE_PROXIMITY_YESTERDAY;
64+ g_date_time_unref(tomorrow);
65+
66+ // does it happen this week?
67+ if (prox == DATE_PROXIMITY_FAR) {
68+ GDateTime* week = g_date_time_add_days(now, -6);
69+ GDateTime* week_bound = g_date_time_new_local(g_date_time_get_year(week),
70+ g_date_time_get_month(week),
71+ g_date_time_get_day_of_month(week),
72+ 23, 59, 59.9);
73+
74+ if (g_date_time_compare(time, week_bound) >= 0)
75+ prox = DATE_PROXIMITY_WEEK;
76+
77+ g_date_time_unref(week_bound);
78+ g_date_time_unref(week);
79+ }
80+
81+ return DATE_PROXIMITY_FAR;
82+}
83+
84+/**
85+ * _ a time today should be shown as just the time (e.g. “3:55 PM”)
86+ * _ a full-day event today should be shown as “Today”
87+ * _ a time any other day this week should be shown as the short version of the
88+ * day and time (e.g. “Wed 3:55 PM”)
89+ * _ a full-day event tomorrow should be shown as “Tomorrow”
90+ * _ a full-day event another day this week should be shown as the
91+ * weekday (e.g. “Friday”)
92+ * _ a time after this week should be shown as the short version of the day,
93+ * date, and time (e.g. “Wed 21 Apr 3:55 PM”)
94+ * _ a full-day event after this week should be shown as the short version of
95+ * the day and date (e.g. “Wed 21 Apr”).
96+ * _ in addition, when presenting the times of upcoming events, the time should
97+ * be followed by the timezone if it is different from the one the computer
98+ * is currently set to. For example, “Wed 3:55 PM UTC−5”.
99+ */
100+char* generate_full_format_string_at_time (GDateTime* now,
101+ GDateTime* then)
102+{
103+ GString* ret = g_string_new (NULL);
104+
105+ if (then != NULL) {
106+ const date_proximity_t prox = getDateProximity(now, then);
107+
108+ if (is_locale_12h()) {
109+ switch (prox) {
110+ case DATE_PROXIMITY_TODAY:
111+ /* Translators, please edit/rearrange these strftime(3) tokens to suit your locale!
112+ This format string is used for showing, on a 12-hour clock, times that happened today.
113+ en_US example: "%l:%M %p" --> "1:00 PM" */
114+ g_string_assign (ret, gettext("%l:%M %p"));
115+ break;
116+
117+ case DATE_PROXIMITY_YESTERDAY:
118+ /* Translators, please edit/rearrange these strftime(3) tokens to suit your locale!
119+ This format string is used for showing, on a 12-hour clock, times that happen yesterday.
120+ (\u2003 is a unicode em space which is slightly wider than a normal space.)
121+ en_US example: "Yesterday\u2003%l:%M %p" --> "Tomorrow 1:00 PM" */
122+ g_string_assign (ret, gettext("Yesterday\u2003%l:%M %p"));
123+ break;
124+
125+ case DATE_PROXIMITY_WEEK:
126+ /* Translators, please edit/rearrange these strftime(3) tokens to suit your locale!
127+ This format string is used for showing, on a 12-hour clock, times that happened in the last week.
128+ (\u2003 is a unicode em space which is slightly wider than a normal space.)
129+ en_US example: "%a\u2003%l:%M %p" --> "Fri 1:00 PM" */
130+ g_string_assign (ret, gettext("%a\u2003%l:%M %p"));
131+ break;
132+
133+ case DATE_PROXIMITY_FAR:
134+ /* Translators, please edit/rearrange these strftime(3) tokens to suit your locale!
135+ This format string is used for showing, on a 12-hour clock, times that happened before a week from now.
136+ (\u2003 is a unicode em space which is slightly wider than a normal space.)
137+ en_US example: "%a %d %b\u2003%l:%M %p" --> "Fri Oct 31 1:00 PM"
138+ en_GB example: "%a %b %d\u2003%l:%M %p" --> "Fri 31 Oct 1:00 PM" */
139+ g_string_assign (ret, gettext("%a %d %b\u2003%l:%M %p"));
140+ break;
141+ }
142+ } else {
143+ switch (prox) {
144+ case DATE_PROXIMITY_TODAY:
145+ /* Translators, please edit/rearrange these strftime(3) tokens to suit your locale!
146+ This format string is used for showing, on a 24-hour clock, times that happened today.
147+ en_US example: "%H:%M" --> "13:00" */
148+ g_string_assign (ret, gettext("%H:%M"));
149+ break;
150+
151+ case DATE_PROXIMITY_YESTERDAY:
152+ /* Translators, please edit/rearrange these strftime(3) tokens to suit your locale!
153+ This format string is used for showing, on a 24-hour clock, times that happen yesterday.
154+ (\u2003 is a unicode em space which is slightly wider than a normal space.)
155+ en_US example: "Yesterday\u2003%l:%M %p" --> "Tomorrow 13:00" */
156+ g_string_assign (ret, gettext("Yesterday\u2003%H:%M"));
157+ break;
158+
159+ case DATE_PROXIMITY_WEEK:
160+ /* Translators, please edit/rearrange these strftime(3) tokens to suit your locale!
161+ This format string is used for showing, on a 24-hour clock, times that happened in the last week.
162+ (\u2003 is a unicode em space which is slightly wider than a normal space.)
163+ en_US example: "%a\u2003%H:%M" --> "Fri 13:00" */
164+ g_string_assign (ret, gettext("%a\u2003%H:%M"));
165+ break;
166+
167+ case DATE_PROXIMITY_FAR:
168+ /* Translators, please edit/rearrange these strftime(3) tokens to suit your locale!
169+ This format string is used for showing, on a 24-hour clock, times that happened before a week from now.
170+ (\u2003 is a unicode em space which is slightly wider than a normal space.)
171+ en_US example: "%a %d %b\u2003%H:%M" --> "Fri Oct 31 13:00"
172+ en_GB example: "%a %b %d\u2003%H:%M" --> "Fri 31 Oct 13:00" */
173+ g_string_assign (ret, gettext("%a %d %b\u2003%H:%M"));
174+ break;
175+ }
176+ }
177+ }
178+
179+ return g_string_free (ret, FALSE);
180+}
181+
182+QString RelativeTimeFormatter::format() const
183+{
184+ GDateTime* now = g_date_time_new_from_unix_utc(QDateTime::currentMSecsSinceEpoch() / 1000);
185+ GDateTime* then = g_date_time_new_from_unix_local(time());
186+ char* time_format = generate_full_format_string_at_time(now, then);
187+
188+ QString str(QString::fromUtf8(time_format));
189+ g_free(time_format);
190+
191+ g_date_time_unref(now);
192+ g_date_time_unref(then);
193+
194+ return str;
195+}