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1babb3de8fba4a6f4fbd3ab76aa550e76d81e49f
federated-calendar/src/gcal-utils.c
T
fosero 83cf97ecb3 utils: let format_utc_offset handle microseconds 
format_utc_offset can be called with the return value of
g_date_time_get_utc_offset returning microseconds in a gint64. It is
also still called with the return value of icaltimezone_get_utc_offset
in seconds. Deal with both.

https://bugzilla.gnome.org/show_bug.cgi?id=762438
2016-02-23 22:05:24 -03:00

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/* -*- mode: c; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/*
* gcal-utils.c
*
* Copyright (C) 2012 - Erick Pérez Castellanos
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "gcal-utils.h"
#include "gcal-event-widget.h"
#include "gcal-view.h"
#include <libecal/libecal.h>
#include <libedataserver/libedataserver.h>
#include <glib/gi18n.h>
#include <langinfo.h>
#include <string.h>
#include <math.h>
static const gint
ab_day[7] =
{
ABDAY_1,
ABDAY_2,
ABDAY_3,
ABDAY_4,
ABDAY_5,
ABDAY_6,
ABDAY_7,
};
static const gint
month_item[12] =
{
MON_1,
MON_2,
MON_3,
MON_4,
MON_5,
MON_6,
MON_7,
MON_8,
MON_9,
MON_10,
MON_11,
MON_12
};
G_DEFINE_BOXED_TYPE (icaltimetype, icaltime, gcal_dup_icaltime, g_free)
gint
datetime_compare_date (GDateTime *dt1,
GDateTime *dt2)
{
if (!dt1 && !dt2)
return 0;
else if (!dt1)
return -1;
else if (!dt2)
return 1;
if (g_date_time_get_year (dt1) != g_date_time_get_year (dt2))
return g_date_time_get_year (dt1) - g_date_time_get_year (dt2);
if (g_date_time_get_month (dt1) != g_date_time_get_month (dt2))
return g_date_time_get_month (dt1) - g_date_time_get_month (dt2);
if (g_date_time_get_day_of_month (dt1) != g_date_time_get_day_of_month (dt2))
return g_date_time_get_day_of_month (dt1) - g_date_time_get_day_of_month (dt2);
return 0;
}
icaltimetype*
datetime_to_icaltime (GDateTime *dt)
{
icaltimetype *idt;
if (!dt)
return NULL;
idt = g_new0 (icaltimetype, 1);
idt->year = g_date_time_get_year (dt);
idt->month = g_date_time_get_month (dt);
idt->day = g_date_time_get_day_of_month (dt);
idt->hour = g_date_time_get_hour (dt);
idt->minute = g_date_time_get_minute (dt);
idt->second = g_date_time_get_seconds (dt);
idt->is_date = (idt->hour == 0 &&
idt->minute == 0 &&
idt->second == 0);
return idt;
}
GDateTime*
icaltime_to_datetime (const icaltimetype *date)
{
GDateTime *dt;
GTimeZone *tz;
tz = date->zone ? g_time_zone_new (icaltime_get_tzid (*date)) : g_time_zone_new_utc ();
dt = g_date_time_new (tz,
date->year,
date->month,
date->day,
date->is_date ? 0 : date->hour,
date->is_date ? 0 : date->minute,
date->is_date ? 0 : date->second);
g_clear_pointer (&tz, g_time_zone_unref);
return dt;
}
gboolean
datetime_is_date (GDateTime *dt)
{
return g_date_time_get_hour (dt) == 0 &&
g_date_time_get_minute (dt) == 0 &&
g_date_time_get_seconds (dt) == 0;
}
icaltimetype*
gcal_dup_icaltime (const icaltimetype *date)
{
icaltimetype *new_date;
if (date == NULL)
return NULL;
new_date= g_new (icaltimetype, 1);
new_date->year = date->year;
new_date->month = date->month;
new_date->day = date->day;
new_date->hour = date->hour;
new_date->minute = date->minute;
new_date->second = date->second;
new_date->is_utc = date->is_utc;
new_date->is_date = date->is_date;
new_date->is_daylight = date->is_daylight;
new_date->zone = date->zone;
return new_date;
}
gchar*
gcal_get_weekday (gint i)
{
return nl_langinfo (ab_day[i]);
}
gchar*
gcal_get_month_name (gint i)
{
return nl_langinfo (month_item[i]);
}
/**
* gcal_get_pixbuf_from_color:
* @color:
* @size:
*
* Create a pixbuf of a simple {@link GdkRGBA} color.
*
* Returns: (Transfer full): An instance of {@link GdkPixbuf} to be freed with g_object_unref()
**/
GdkPixbuf*
gcal_get_pixbuf_from_color (GdkRGBA *color,
gint size)
{
cairo_surface_t *surface;
cairo_t *cr;
GdkPixbuf *pix;
/* TODO: review size here, maybe not hardcoded */
surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, size, size);
cr = cairo_create (surface);
cairo_set_source_rgba (cr,
color->red,
color->green,
color->blue,
color->alpha);
cairo_rectangle (cr, 0, 0, size, size);
cairo_fill (cr);
cairo_destroy (cr);
pix = gdk_pixbuf_get_from_surface (surface,
0, 0,
size, size);
cairo_surface_destroy (surface);
return pix;
}
GdkPixbuf*
get_circle_pixbuf_from_color (GdkRGBA *color,
gint size)
{
cairo_surface_t *surface;
cairo_t *cr;
GdkPixbuf *pix;
/* TODO: review size here, maybe not hardcoded */
surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, size, size);
cr = cairo_create (surface);
cairo_set_source_rgba (cr,
color->red,
color->green,
color->blue,
color->alpha);
cairo_arc (cr, size / 2.0, size / 2.0, size / 2.0, 0., 2 * M_PI);
cairo_fill (cr);
cairo_destroy (cr);
pix = gdk_pixbuf_get_from_surface (surface,
0, 0,
size, size);
cairo_surface_destroy (surface);
return pix;
}
void
get_color_name_from_source (ESource *source, GdkRGBA *out_color)
{
ESourceSelectable *extension = E_SOURCE_SELECTABLE (e_source_get_extension (source, E_SOURCE_EXTENSION_CALENDAR));
/* FIXME: We should handle calendars colours better */
if (!gdk_rgba_parse (out_color, e_source_selectable_get_color (extension)))
gdk_rgba_parse (out_color, "#becedd"); /* calendar default colour */
}
gint
gcal_compare_event_widget_by_date (gconstpointer a,
gconstpointer b)
{
/* negative value if a < b; zero if a = b; positive value if a > b. */
GcalViewChild *a_child;
GcalViewChild *b_child;
GDateTime *a_date;
GDateTime *b_date;
gint comparison;
a_child = (GcalViewChild*) a;
b_child = (GcalViewChild*) b;
a_date = gcal_event_get_date_start (gcal_event_widget_get_event (GCAL_EVENT_WIDGET (a_child->widget)));
b_date = gcal_event_get_date_start (gcal_event_widget_get_event (GCAL_EVENT_WIDGET (b_child->widget)));
comparison = g_date_time_compare (a_date, b_date);
return comparison;
}
/**
* get_desc_from_component:
* @component:
*
* Utility method to handle the extraction of the description from an
* #ECalComponent. This cycle through the list of #ECalComponentText
* and concatenate each string into one.
*
* Returns: (Transfer full) a new allocated string with the description
**/
gchar*
get_desc_from_component (ECalComponent *component,
const gchar *joint_char)
{
GSList *text_list;
GSList *l;
gchar *desc = NULL;
e_cal_component_get_description_list (component, &text_list);
for (l = text_list; l != NULL; l = l->next)
{
if (l->data != NULL)
{
ECalComponentText *text;
gchar *carrier;
text = l->data;
if (desc != NULL)
{
carrier = g_strconcat (desc, joint_char, text->value, NULL);
g_free (desc);
desc = carrier;
}
else
{
desc = g_strdup (text->value);
}
}
}
e_cal_component_free_text_list (text_list);
return desc != NULL ? g_strstrip (desc) : NULL;
}
/**
* get_uuid_from_component:
* @source: an {@link ESource}
* @component: an {@link ECalComponent}
*
* Obtains the uuid from a component in the form
* "source_uid:event_uid:event_rid" or "source:uid:event_uid" if the
* component doesn't hold a recurrence event
*
* Returns: (Transfer full) a new allocated string with the description
**/
gchar*
get_uuid_from_component (ESource *source,
ECalComponent *component)
{
gchar *uuid;
ECalComponentId *id;
id = e_cal_component_get_id (component);
if (id->rid != NULL)
{
uuid = g_strdup_printf ("%s:%s:%s",
e_source_get_uid (source),
id->uid,
id->rid);
}
else
{
uuid = g_strdup_printf ("%s:%s",
e_source_get_uid (source),
id->uid);
}
e_cal_component_free_id (id);
return uuid;
}
/**
* get_first_weekday:
*
* Copied from Clocks, which by itself is
* copied from GtkCalendar.
*
* Returns: the first weekday, from 0 to 6
*/
gint
get_first_weekday (void)
{
int week_start;
#ifdef HAVE__NL_TIME_FIRST_WEEKDAY
union { unsigned int word; char *string; } langinfo;
int week_1stday = 0;
int first_weekday = 1;
guint week_origin;
#else
char *gtk_week_start;
#endif
#ifdef HAVE__NL_TIME_FIRST_WEEKDAY
langinfo.string = nl_langinfo (_NL_TIME_FIRST_WEEKDAY);
first_weekday = langinfo.string[0];
langinfo.string = nl_langinfo (_NL_TIME_WEEK_1STDAY);
week_origin = langinfo.word;
if (week_origin == 19971130) /* Sunday */
week_1stday = 0;
else if (week_origin == 19971201) /* Monday */
week_1stday = 1;
else
g_warning ("Unknown value of _NL_TIME_WEEK_1STDAY.\n");
week_start = (week_1stday + first_weekday - 1) % 7;
#else
/* Use a define to hide the string from xgettext */
# define GTK_WEEK_START "calendar:week_start:0"
gtk_week_start = dgettext ("gtk30", GTK_WEEK_START);
if (strncmp (gtk_week_start, "calendar:week_start:", 20) == 0)
week_start = *(gtk_week_start + 20) - '0';
else
week_start = -1;
if (week_start < 0 || week_start > 6)
{
g_warning ("Whoever translated calendar:week_start:0 for GTK+ "
"did so wrongly.\n");
week_start = 0;
}
#endif
return week_start;
}
/**
* build_component_from_details:
* @summary:
* @initial_date:
* @final_date:
*
* Create a component with the provided details
*
* Returns: (Transfer full): an {@link ECalComponent} object
**/
ECalComponent*
build_component_from_details (const gchar *summary,
GDateTime *initial_date,
GDateTime *final_date)
{
ECalComponent *event;
ECalComponentDateTime dt;
ECalComponentText summ;
GDateTime *utc_start, *utc_end;
gboolean all_day;
event = e_cal_component_new ();
e_cal_component_set_new_vtype (event, E_CAL_COMPONENT_EVENT);
/*
* Check if the event is all day. Notice that it can be all day even
* without the final date.
*/
all_day = datetime_is_date (initial_date) && (final_date ? datetime_is_date (final_date) : TRUE);
/* Start date */
utc_start = g_date_time_to_utc (initial_date);
dt.value = datetime_to_icaltime (utc_start);
dt.value->is_date = all_day;
dt.tzid = format_utc_offset (g_date_time_get_utc_offset (initial_date));
e_cal_component_set_dtstart (event, &dt);
e_cal_component_free_datetime (&dt);
g_date_time_unref (utc_start);
/* End date */
if (!final_date)
final_date = g_date_time_add_days (initial_date, 1);
utc_end = g_date_time_to_utc (final_date);
dt.value = datetime_to_icaltime (utc_end);
dt.value->is_date = all_day;
dt.tzid = format_utc_offset (g_date_time_get_utc_offset (final_date));
e_cal_component_set_dtend (event, &dt);
e_cal_component_free_datetime (&dt);
g_date_time_unref (utc_end);
summ.altrep = NULL;
summ.value = summary;
e_cal_component_set_summary (event, &summ);
e_cal_component_commit_sequence (event);
return event;
}
/**
* icaltime_compare_date:
* @date1:
* @date2:
*
* Compare date parts of {@link icaltimetype} objects. Return negative value, 0 or positive value
* accordingly if date1 is before, same day of after date2.
* As a bonus it returns the amount of days passed between two days on the same year.
*
* Returns: negative, 0 or positive
**/
gint
icaltime_compare_date (const icaltimetype *date1,
const icaltimetype *date2)
{
if (date2 == NULL)
return 0;
if (date1->year < date2->year)
return -1;
else if (date1->year > date2->year)
return 1;
else
return time_day_of_year (date1->day, date1->month - 1, date1->year) -
time_day_of_year (date2->day, date2->month - 1, date2->year);
}
gint
icaltime_compare_with_current (const icaltimetype *date1,
const icaltimetype *date2,
time_t *current_time_t)
{
gint result = 0;
time_t start1, start2, diff1, diff2;
start1 = icaltime_as_timet_with_zone (*date1, date1->zone != NULL ? date1->zone : e_cal_util_get_system_timezone ());
start2 = icaltime_as_timet_with_zone (*date2, date2->zone != NULL ? date2->zone : e_cal_util_get_system_timezone ());
diff1 = start1 - *current_time_t;
diff2 = start2 - *current_time_t;
if (diff1 != diff2)
{
if (diff1 == 0)
result = -1;
else if (diff2 == 0)
result = 1;
if (diff1 > 0 && diff2 < 0)
result = -1;
else if (diff2 > 0 && diff1 < 0)
result = 1;
else if (diff1 < 0 && diff2 < 0)
result = ABS (diff1) - ABS (diff2);
else if (diff1 > 0 && diff2 > 0)
result = diff1 - diff2;
}
return result;
}
/* Function to do a last minute fixup of the AM/PM stuff if the locale
* and gettext haven't done it right. Most English speaking countries
* except the USA use the 24 hour clock (UK, Australia etc). However
* since they are English nobody bothers to write a language
* translation (gettext) file. So the locale turns off the AM/PM, but
* gettext does not turn on the 24 hour clock. Leaving a mess.
*
* This routine checks if AM/PM are defined in the locale, if not it
* forces the use of the 24 hour clock.
*
* The function itself is a front end on strftime and takes exactly
* the same arguments.
*
* TODO: Actually remove the '%p' from the fixed up string so that
* there isn't a stray space.
*/
gsize
e_strftime_fix_am_pm (gchar *str,
gsize max,
const gchar *fmt,
const struct tm *tm)
{
gchar buf[10];
gchar *sp;
gchar *ffmt;
gsize ret;
if (strstr(fmt, "%p")==NULL && strstr(fmt, "%P")==NULL) {
/* No AM/PM involved - can use the fmt string directly */
ret = e_strftime (str, max, fmt, tm);
} else {
/* Get the AM/PM symbol from the locale */
e_strftime (buf, 10, "%p", tm);
if (buf[0]) {
/* AM/PM have been defined in the locale
* so we can use the fmt string directly. */
ret = e_strftime (str, max, fmt, tm);
} else {
/* No AM/PM defined by locale
* must change to 24 hour clock. */
ffmt = g_strdup (fmt);
for (sp=ffmt; (sp=strstr(sp, "%l")); sp++) {
/* Maybe this should be 'k', but I have never
* seen a 24 clock actually use that format. */
sp[1]='H';
}
for (sp=ffmt; (sp=strstr(sp, "%I")); sp++) {
sp[1]='H';
}
ret = e_strftime (str, max, ffmt, tm);
g_free (ffmt);
}
}
return (ret);
}
gsize
e_utf8_strftime_fix_am_pm (gchar *str,
gsize max,
const gchar *fmt,
const struct tm *tm)
{
gsize sz, ret;
gchar *locale_fmt, *buf;
locale_fmt = g_locale_from_utf8 (fmt, -1, NULL, &sz, NULL);
if (!locale_fmt)
return 0;
ret = e_strftime_fix_am_pm (str, max, locale_fmt, tm);
if (!ret) {
g_free (locale_fmt);
return 0;
}
buf = g_locale_to_utf8 (str, ret, NULL, &sz, NULL);
if (!buf) {
g_free (locale_fmt);
return 0;
}
if (sz >= max) {
gchar *tmp = buf + max - 1;
tmp = g_utf8_find_prev_char (buf, tmp);
if (tmp)
sz = tmp - buf;
else
sz = 0;
}
memcpy (str, buf, sz);
str[sz] = '\0';
g_free (locale_fmt);
g_free (buf);
return sz;
}
/**
* fix_popover_menu_icons:
* @window: a #GtkPopover
*
* Hackish code that inspects the popover's children,
* retrieve the hidden GtkImage buried under lots of
* widgets, and make it visible again.
*
* Hopefully, we'll find a better way to do this in
* the long run.
*
*/
void
fix_popover_menu_icons (GtkPopover *popover)
{
GtkWidget *popover_stack;
GtkWidget *menu_section;
GtkWidget *menu_section_box;
GList *stack_children;
GList *menu_section_children;
GList *menu_section_box_children, *aux;
popover_stack = gtk_bin_get_child (GTK_BIN (popover));
stack_children = gtk_container_get_children (GTK_CONTAINER (popover_stack));
/**
* At the moment, the popover stack surely contains only
* one child of type GtkMenuSectionBox, which contains
* a single GtkBox.
*/
menu_section = stack_children->data;
menu_section_children = gtk_container_get_children (GTK_CONTAINER (menu_section));
/**
* Get the unique box's children.
*/
menu_section_box = menu_section_children->data;
menu_section_box_children = gtk_container_get_children (GTK_CONTAINER (menu_section_box));
/**
* Iterate through the GtkModelButtons inside the menu section box.
*/
for (aux = menu_section_box_children; aux != NULL; aux = aux->next)
{
GtkWidget *button_box;
GList *button_box_children, *aux2;
button_box = gtk_bin_get_child (GTK_BIN (aux->data));
button_box_children = gtk_container_get_children (GTK_CONTAINER (button_box));
/**
* Since there is no guarantee that the first child is
* the GtkImage we're looking for, we have to iterate
* through the children and check if the types match.
*/
for (aux2 = button_box_children; aux2 != NULL; aux2 = aux2->next)
{
GtkWidget *button_box_child;
button_box_child = aux2->data;
if (g_type_is_a (G_OBJECT_TYPE (button_box_child), GTK_TYPE_IMAGE))
{
gtk_widget_show (button_box_child);
break;
}
}
g_list_free (button_box_children);
}
g_list_free (stack_children);
g_list_free (menu_section_children);
g_list_free (menu_section_box_children);
}
/**
* uri_get_fields:
*
* Split the given URI into the
* fields.
*
* Returns: #TRUE if @uri could be parsed, #FALSE otherwise
*/
gboolean
uri_get_fields (const gchar *uri,
gchar **schema,
gchar **host,
gchar **path)
{
GRegex *regex;
GMatchInfo *match;
gboolean valid;
g_return_val_if_fail (uri != NULL, FALSE);
match = NULL;
valid = FALSE;
regex = g_regex_new ("([a-zA-Z0-9\\+\\.\\-]*:\\/\\/){0,1}([-a-zA-Z0-9@:%._\\+~#=]{2,256}\\.[a-z]{2,6}\\b)([-a-zA-Z0-9@:%_\\+.//=]*)",
G_REGEX_CASELESS, 0, NULL);
/*
* Retrieved matching URI. The whole url is
* checked and the regex groups are:
* 1. schema
* 2. host
* 3. server path
*/
if (g_regex_match (regex, uri, 0, &match))
{
valid = TRUE;
if (schema != NULL)
*schema = g_match_info_fetch (match, 1);
if (host != NULL)
*host = g_match_info_fetch (match, 2);
if (path != NULL)
*path = g_match_info_fetch (match, 3);
}
else
{
if (schema != NULL)
*schema = NULL;
if (host != NULL)
*host = NULL;
if (path != NULL)
*path = NULL;
}
g_match_info_free (match);
g_regex_unref (regex);
return valid;
}
void
get_source_parent_name_color (GcalManager *manager,
ESource *source,
gchar **name,
gchar **color)
{
ESource *parent_source;
g_assert (source && E_IS_SOURCE (source));
parent_source = gcal_manager_get_source (manager, e_source_get_parent (source));
if (name != NULL)
*name = e_source_dup_display_name (parent_source);
if (color != NULL)
{
GdkRGBA c;
get_color_name_from_source (parent_source, &c);
*color = gdk_rgba_to_string (&c);
}
}
gchar*
format_utc_offset (gint64 offset)
{
const char *sign = "+";
gint hours, minutes, seconds;
if (offset < 0) {
offset = -offset;
sign = "-";
}
/* offset can be seconds or microseconds */
if (offset >= 1000000)
offset = offset / 1000000;
hours = offset / 3600;
minutes = (offset % 3600) / 60;
seconds = offset % 60;
if (seconds > 0)
return g_strdup_printf ("%s%02i%02i%02i", sign, hours, minutes, seconds);
else
return g_strdup_printf ("%s%02i%02i", sign, hours, minutes);
}
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