evolution-3.6.4/plugins/save-calendar/ical-format.c

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  1 /*
  2  * This program is free software; you can redistribute it and/or
  3  * modify it under the terms of the GNU Lesser General Public
  4  * License as published by the Free Software Foundation; either
  5  * version 2 of the License, or (at your option) version 3.
  6  *
  7  * This program is distributed in the hope that it will be useful,
  8  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  9  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 10  * Lesser General Public License for more details.
 11  *
 12  * You should have received a copy of the GNU Lesser General Public
 13  * License along with the program; if not, see <http://www.gnu.org/licenses/>
 14  *
 15  *
 16  * Authors:
 17  *		Rodrigo Moya <rodrigo@novell.com>
 18  *      Philip Van Hoof <pvanhoof@gnome.org>
 19  *
 20  * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 21  *
 22  */
 23 
 24 #ifdef HAVE_CONFIG_H
 25 #include <config.h>
 26 #endif
 27 
 28 #include <string.h>
 29 #include <glib/gi18n.h>
 30 
 31 #include "format-handler.h"
 32 
 33 static void
 34 display_error_message (GtkWidget *parent,
 35                        const gchar *message)
 36 {
 37 	GtkWidget *dialog;
 38 
 39 	dialog = gtk_message_dialog_new (GTK_WINDOW (parent), 0, GTK_MESSAGE_ERROR, GTK_BUTTONS_CLOSE, "%s", message);
 40 	gtk_dialog_run (GTK_DIALOG (dialog));
 41 	gtk_widget_destroy (dialog);
 42 }
 43 
 44 typedef struct {
 45 	GHashTable *zones;
 46 	ECalClient *client;
 47 } CompTzData;
 48 
 49 static void
 50 insert_tz_comps (icalparameter *param,
 51                  gpointer cb_data)
 52 {
 53 	const gchar *tzid;
 54 	CompTzData *tdata = cb_data;
 55 	icaltimezone *zone = NULL;
 56 	icalcomponent *tzcomp;
 57 	GError *error = NULL;
 58 
 59 	tzid = icalparameter_get_tzid (param);
 60 
 61 	if (g_hash_table_lookup (tdata->zones, tzid))
 62 		return;
 63 
 64 	if (!e_cal_client_get_timezone_sync (tdata->client, tzid, &zone, NULL, &error)) {
 65 		g_warning ("Could not get the timezone information for %s :  %s \n", tzid, error->message);
 66 		g_error_free (error);
 67 		return;
 68 	}
 69 
 70 	tzcomp = icalcomponent_new_clone (icaltimezone_get_component (zone));
 71 	g_hash_table_insert (tdata->zones, (gpointer) tzid, (gpointer) tzcomp);
 72 }
 73 
 74 static void
 75 append_tz_to_comp (gpointer key,
 76                    gpointer value,
 77                    icalcomponent *toplevel)
 78 {
 79 	icalcomponent_add_component (toplevel, (icalcomponent *) value);
 80 }
 81 
 82 static void
 83 do_save_calendar_ical (FormatHandler *handler,
 84                        ESourceSelector *selector,
 85                        ECalClientSourceType type,
 86                        gchar *dest_uri)
 87 {
 88 	ESource *primary_source;
 89 	ECalClient *source_client;
 90 	GError *error = NULL;
 91 	GSList *objects = NULL;
 92 	icalcomponent *top_level = NULL;
 93 
 94 	if (!dest_uri)
 95 		return;
 96 
 97 	/* open source client */
 98 	primary_source = e_source_selector_ref_primary_selection (selector);
 99 	source_client = e_cal_client_new (primary_source, type, &error);
100 	g_object_unref (primary_source);
101 
102 	if (!source_client || !e_client_open_sync (E_CLIENT (source_client), TRUE, NULL, &error)) {
103 		display_error_message (gtk_widget_get_toplevel (GTK_WIDGET (selector)), error->message);
104 		if (source_client)
105 			g_object_unref (source_client);
106 		g_error_free (error);
107 		return;
108 	}
109 
110 	/* create destination file */
111 	top_level = e_cal_util_new_top_level ();
112 
113 	error = NULL;
114 	if (e_cal_client_get_object_list_sync (source_client, "#t", &objects, NULL, &error)) {
115 		CompTzData tdata;
116 		GOutputStream *stream;
117 		GSList *iter;
118 
119 		tdata.zones = g_hash_table_new (g_str_hash, g_str_equal);
120 		tdata.client = source_client;
121 
122 		for (iter = objects; iter; iter = iter->next) {
123 			icalcomponent *icalcomp = icalcomponent_new_clone (iter->data);
124 
125 			icalcomponent_foreach_tzid (icalcomp, insert_tz_comps, &tdata);
126 			icalcomponent_add_component (top_level, icalcomp);
127 		}
128 
129 		g_hash_table_foreach (tdata.zones, (GHFunc) append_tz_to_comp, top_level);
130 
131 		g_hash_table_destroy (tdata.zones);
132 		tdata.zones = NULL;
133 
134 		/* save the file */
135 		stream = open_for_writing (GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (selector))), dest_uri, &error);
136 
137 		if (stream) {
138 			gchar *ical_str = icalcomponent_as_ical_string_r (top_level);
139 
140 			g_output_stream_write_all (stream, ical_str, strlen (ical_str), NULL, NULL, &error);
141 			g_output_stream_close (stream, NULL, NULL);
142 
143 			g_object_unref (stream);
144 			g_free (ical_str);
145 		}
146 
147 		e_cal_client_free_icalcomp_slist (objects);
148 	}
149 
150 	if (error) {
151 		display_error_message (gtk_widget_get_toplevel (GTK_WIDGET (selector)), error->message);
152 		g_error_free (error);
153 	}
154 
155 	/* terminate */
156 	g_object_unref (source_client);
157 	icalcomponent_free (top_level);
158 }
159 
160 FormatHandler *ical_format_handler_new (void)
161 {
162 	FormatHandler *handler = g_new (FormatHandler, 1);
163 
164 	handler->isdefault = TRUE;
165 	handler->combo_label = _("iCalendar (.ics)");
166 	handler->filename_ext = ".ics";
167 	handler->options_widget = NULL;
168 	handler->save = do_save_calendar_ical;
169 	handler->data = NULL;
170 
171 	return handler;
172 }