aboutsummaryrefslogtreecommitdiffstats
path: root/libempathy/empathy-time.c
blob: 13e17d152730e9a23f49c903a08e6a7f868b80a3 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 * Copyright (C) 2003-2007 Imendio AB
 * Copyright (C) 2007-2010 Collabora Ltd.
 *
 * 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 2.1 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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * Authors: Richard Hult <richard@imendio.com>
 */

#include "config.h"

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <glib/gi18n.h>

#include "empathy-time.h"

/* Note: EmpathyTime is always in UTC. */

time_t
empathy_time_get_current (void)
{
    return time (NULL);
}

time_t
empathy_time_get_local_time (struct tm *tm)
{
    const gchar *tz;
    time_t       t;

    tz = g_getenv ("TZ");
    g_setenv ("TZ", "", TRUE);

    tzset ();

    t = mktime (tm);

    if (tz) {
        g_setenv ("TZ", tz, TRUE);
    } else {
        g_unsetenv ("TZ");
    }

    tzset ();

    return t;
}

/* The format is: "20021209T23:51:30" and is in UTC. 0 is returned on
 * failure. The alternative format "20021209" is also accepted.
 */
time_t
empathy_time_parse (const gchar *str)
{
    struct tm tm;
    gint      year, month;
    gint      n_parsed;

    memset (&tm, 0, sizeof (struct tm));

    n_parsed = sscanf (str, "%4d%2d%2dT%2d:%2d:%2d",
            &year, &month, &tm.tm_mday, &tm.tm_hour,
               &tm.tm_min, &tm.tm_sec);
    if (n_parsed != 3 && n_parsed != 6) {
        return 0;
    }

    tm.tm_year = year - 1900;
    tm.tm_mon = month - 1;
    tm.tm_isdst = -1;

    return empathy_time_get_local_time (&tm);
}

/* Converts the UTC timestamp to a string, also in UTC. Returns NULL on failure. */
gchar *
empathy_time_to_string_utc (time_t       t,
                const gchar *format)
{
    gchar      stamp[128];
    struct tm *tm;

    g_return_val_if_fail (format != NULL, NULL);

    tm = gmtime (&t);
    if (strftime (stamp, sizeof (stamp), format, tm) == 0) {
        return NULL;
    }

    return g_strdup (stamp);
}

/* Converts the UTC timestamp to a string, in local time. Returns NULL on failure. */
gchar *
empathy_time_to_string_local (time_t       t,
                  const gchar *format)
{
    gchar      stamp[128];
    struct tm *tm;

    g_return_val_if_fail (format != NULL, NULL);

    tm = localtime (&t);
    if (strftime (stamp, sizeof (stamp), format, tm) == 0) {
        return NULL;
    }

    return g_strdup (stamp);
}

gchar  *
empathy_time_to_string_relative (time_t then)
{
    time_t now;
    gint   seconds;

    now = time (NULL);
    seconds = now - then;

    if (seconds > 0) {
        if (seconds < 60) {
            return g_strdup_printf (ngettext ("%d second ago",
                "%d seconds ago", seconds), seconds);
        }
        else if (seconds < (60 * 60)) {
            seconds /= 60;
            return g_strdup_printf (ngettext ("%d minute ago",
                "%d minutes ago", seconds), seconds);
        }
        else if (seconds < (60 * 60 * 24)) {
            seconds /= 60 * 60;
            return g_strdup_printf (ngettext ("%d hour ago",
                "%d hours ago", seconds), seconds);
        }
        else if (seconds < (60 * 60 * 24 * 7)) {
            seconds /= 60 * 60 * 24;
            return g_strdup_printf (ngettext ("%d day ago",
                "%d days ago", seconds), seconds);
        }
        else if (seconds < (60 * 60 * 24 * 30)) {
            seconds /= 60 * 60 * 24 * 7;
            return g_strdup_printf (ngettext ("%d week ago",
                "%d weeks ago", seconds), seconds);
        }
        else {
            seconds /= 60 * 60 * 24 * 30;
            return g_strdup_printf (ngettext ("%d month ago",
                "%d months ago", seconds), seconds);
        }
    }
    else {
        return g_strdup (_("in the future"));
    }
}