start on code to do the opposite of icalendar.c (convert from iCalObjects

	* pcs/icalendar-save.c: start on code to do the opposite of
	icalendar.c (convert from iCalObjects to libical's icalcomponents).

svn path=/trunk/; revision=2550

8 files changed, 759 insertions, 6 deletions

diff --git a/calendar/ChangeLog b/calendar/ChangeLog
index e7b95e8f8a..d634b67ce6 100644
--- a/calendar/ChangeLog
+++ b/calendar/ChangeLog
@@ -1,5 +1,8 @@
 2000-04-21  Seth Alves  <alves@hungry.com>
 
+	* pcs/icalendar-save.c: start on code to do the opposite of
+	icalendar.c (convert from iCalObjects to libical's icalcomponents).
+
 	* gui/calendar-commands.c (calendar_control_activate): moved
 	"About Calendar" into the View menu so it shows up.
 
diff --git a/calendar/cal-util/icalendar-save.c b/calendar/cal-util/icalendar-save.c
new file mode 100644
index 0000000000..a639e5ef1d
--- /dev/null
+++ b/calendar/cal-util/icalendar-save.c
@@ -0,0 +1,361 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
+
+#include <config.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include "icalendar-save.h"
+
+
+static void unparse_person (iCalPerson *person, icalproperty *person_prop);
+
+static struct icaltimetype timet_to_icaltime (time_t tt);
+
+
+
+icalcomponent*
+icalcomponent_create_from_ical_object (iCalObject *ical)
+{
+	icalcomponent_kind kind;
+	icalcomponent *comp;
+	icalproperty *prop;
+
+	switch (ical->type) {
+	case ICAL_EVENT: kind = ICAL_VEVENT_COMPONENT; break;
+	case ICAL_TODO: kind = ICAL_VTODO_COMPONENT; break;
+	case ICAL_JOURNAL: kind = ICAL_VJOURNAL_COMPONENT; break;
+	case ICAL_FBREQUEST: kind = ICAL_VFREEBUSY_COMPONENT; break;
+	case ICAL_TIMEZONE: kind = ICAL_VTIMEZONE_COMPONENT; break;
+	default:
+		kind = ICAL_NO_COMPONENT; break;
+	}
+
+	comp = icalcomponent_new (kind);
+
+	/*** calscale ***/
+	prop = icalproperty_new_calscale ("GREGORIAN");
+	icalcomponent_add_property (comp, prop);
+
+	/*** catagories ***/
+	if (ical->categories) {		
+		/* ical->categories is a GList of (char *) */
+		GList *cur;
+		for (cur = ical->categories; cur; cur = cur->next) {
+			prop = icalproperty_new_categories ((char *) cur);
+			icalcomponent_add_property (comp, prop);
+		}
+	}
+
+	/*** class ***/
+	if (ical->class) {
+		prop = icalproperty_new_class (ical->class);
+		icalcomponent_add_property (comp, prop);
+	}
+
+	/*** comment ***/
+	if (ical->comment) {
+		prop = icalproperty_new_comment (ical->comment);
+		icalcomponent_add_property (comp, prop);
+	}
+
+	/*** description ***/
+	if (ical->desc) {
+		prop = icalproperty_new_description (ical->desc);
+		icalcomponent_add_property (comp, prop);
+	}
+
+	/*** geo ***/
+	if (ical->geo.valid) {
+		struct icalgeotype v;
+		v.lat = ical->geo.latitude;
+		v.lon = ical->geo.longitude;
+		prop = icalproperty_new_geo (v);
+		icalcomponent_add_property (comp, prop);
+	}
+
+	/*** location ***/
+	if (ical->location) {
+		prop = icalproperty_new_location (ical->location);
+		icalcomponent_add_property (comp, prop);
+	}
+
+	/*** percentcomplete ***/
+	prop = icalproperty_new_percentcomplete (ical->percent);
+	icalcomponent_add_property (comp, prop);
+
+	/*** priority ***/
+	if (ical->priority) {
+		prop = icalproperty_new_priority (ical->priority);
+		icalcomponent_add_property (comp, prop);
+	}
+
+	/*** resources ***/
+	if (ical->resources) {
+		/* ical->resources is a GList of (char *) */
+		GList *cur;
+		for (cur = ical->resources; cur; cur = cur->next) {
+			prop = icalproperty_new_resources ((char *) cur);
+			icalcomponent_add_property (comp, prop);
+		}
+	}
+
+	/*** status ***/
+	if (ical->status) {
+		prop = icalproperty_new_status (ical->status);
+		icalcomponent_add_property (comp, prop);
+	}
+
+	/*** summary ***/
+	if (ical->summary) {
+		prop = icalproperty_new_summary (ical->summary);
+		icalcomponent_add_property (comp, prop);
+	}
+
+	/*** completed ***/
+	if (ical->completed) {
+		struct icaltimetype ictime;
+		ictime = timet_to_icaltime (ical->completed);
+		prop = icalproperty_new_completed (ictime);
+		icalcomponent_add_property (comp, prop);
+	}
+
+	/*** dtend ***/  /*** due ***/
+	if (ical->dtend) {
+		/* FIXME: We should handle timezone specifiers */
+		struct icaltimetype ictime;
+		ictime = timet_to_icaltime (ical->dtend);
+		if (ical->type == ICAL_TODO)
+			prop = icalproperty_new_due (ictime);
+		else
+			prop = icalproperty_new_dtend (ictime);
+		if (ical->date_only) {
+			icalparameter *param;
+			param = icalparameter_new (ICAL_VALUE_PARAMETER);
+			icalparameter_set_value (param, ICAL_VALUE_DATE);
+			icalproperty_add_parameter (prop, param);
+		}
+		icalcomponent_add_property (comp, prop);
+	}
+
+	/*** dtstart ***/
+	if (ical->dtstart) {
+		/* FIXME: We should handle timezone specifiers */
+		struct icaltimetype ictime;
+		ictime = timet_to_icaltime (ical->dtstart);
+		prop = icalproperty_new_dtstart (ictime);
+		if (ical->date_only) {
+			icalparameter *param;
+			param = icalparameter_new (ICAL_VALUE_PARAMETER);
+			icalparameter_set_value (param, ICAL_VALUE_DATE);
+			icalproperty_add_parameter (prop, param);
+		}
+		icalcomponent_add_property (comp, prop);
+	}
+
+	/*** duration ***/
+	{
+		/* FIX ME */
+	}
+
+	/*** freebusy ***/
+	{
+		/* FIX ME */
+	}
+
+	/*** transp ***/
+	{
+		if (ical->transp == ICAL_TRANSP_PROPERTY)
+			icalproperty_set_transp (prop, "TRANSPARENT");
+		else
+			icalproperty_set_transp (prop, "OPAQUE");
+		icalcomponent_add_property (comp, prop);
+	}
+
+	/*
+	  ICAL_TZID_PROPERTY:
+	  ICAL_TZNAME_PROPERTY:
+	  ICAL_TZOFFSETFROM_PROPERTY:
+	  ICAL_TZOFFSETTO_PROPERTY:
+	  ICAL_TZURL_PROPERTY:
+	*/
+
+	/*** attendee ***/
+	if (ical->attendee) {
+		/* a list of (iCalPerson *) */
+		GList *cur;
+		for (cur = ical->attendee; cur; cur = cur->next) {
+			iCalPerson *person = (iCalPerson *) cur->data;
+			prop = icalproperty_new_attendee ("FIX ME");
+			unparse_person (person, prop);
+			icalcomponent_add_property (comp, prop);
+		}
+	}
+
+	/*** contact ***/
+	if (ical->contact) {
+		/* a list of (iCalPerson *) */
+		GList *cur;
+		for (cur = ical->contact; cur; cur = cur->next) {
+			iCalPerson *person = (iCalPerson *) cur->data;
+			prop = icalproperty_new_contact ("FIX ME");
+			unparse_person (person, prop);
+			icalcomponent_add_property (comp, prop);
+		}
+	}
+
+	/*** organizer ***/
+	if (ical->organizer) {
+		prop = icalproperty_new_organizer ("FIX ME");
+		unparse_person (ical->organizer, prop);
+		icalcomponent_add_property (comp, prop);
+	}
+
+	/*** recurrenceid ***/
+	if (ical->recurid) {
+		struct icaltimetype ictime;
+		ictime = timet_to_icaltime (ical->recurid);
+		prop = icalproperty_new_recurrenceid (ictime);
+	}
+
+	/*** relatedto ***/
+
+	/*** url ***/
+
+	/*** uid ***/
+
+	/*** exdate ***/
+
+	/*** created ***/
+
+	/*** dtstamp ***/
+
+	/*** lastmodified ***/
+
+	/*** sequence ***/
+
+	/*** requeststatus ***/
+
+
+	/* then do subcomponents?  valarms? */
+
+	return comp;
+}
+
+
+static
+struct icaltimetype timet_to_icaltime (time_t tt)
+{
+	extern long timezone;
+	struct tm *t;
+	struct icaltimetype i;
+
+	t = gmtime (&tt);
+
+	/*return tt - (i->is_utc ? timezone : 0); */
+	i.is_utc = 0;
+
+	i.year = t->tm_year + 1900;
+	i.month = t->tm_mon + 1;
+	i.day = t->tm_mday;
+
+	if (t->tm_hour == 0 && t->tm_min == 0 && t->tm_sec == 0) {
+		i.is_date = 1;
+		i.hour = 0;
+		i.minute = 0;
+		i.second = 0;
+	} else {
+		i.is_date = 0;
+		i.hour = t->tm_hour;
+		i.minute = t->tm_min;
+		i.second = t->tm_sec;
+	}
+
+	return i;
+}
+
+
+/* fills in "person_prop" with information from "person" */
+
+static
+void unparse_person (iCalPerson *person, icalproperty *person_prop)
+{
+	icalparameter *param;
+	GList *cur;
+
+	/* convert iCalPerson to an icalproperty */
+
+	param = icalparameter_new_cn (person->name);
+	icalproperty_add_parameter (person_prop, param);
+
+	if (g_strcasecmp (person->role, "CHAIR") == 0)
+		param = icalparameter_new_role (ICAL_ROLE_CHAIR);
+	else if (g_strcasecmp (person->role, "REQPARTICIPANT") == 0)
+		param = icalparameter_new_role (ICAL_ROLE_REQPARTICIPANT);
+	else if (g_strcasecmp (person->role, "OPTPARTICIPANT") == 0)
+		param = icalparameter_new_role (ICAL_ROLE_OPTPARTICIPANT);
+	else if (g_strcasecmp (person->role, "NONPARTICIPANT") == 0)
+		param = icalparameter_new_role (ICAL_ROLE_NONPARTICIPANT);
+	else
+		param = icalparameter_new_role (ICAL_ROLE_XNAME);
+	icalproperty_add_parameter (person_prop, param);
+
+	if (g_strcasecmp (person->partstat, "NEEDSACTION") == 0)
+		param = icalparameter_new_partstat (ICAL_PARTSTAT_NEEDSACTION);
+	else if (g_strcasecmp (person->partstat, "ACCEPTED") == 0)
+		param = icalparameter_new_partstat (ICAL_PARTSTAT_ACCEPTED);
+	else if (g_strcasecmp (person->partstat, "DECLINED") == 0)
+		param = icalparameter_new_partstat (ICAL_PARTSTAT_DECLINED);
+	else if (g_strcasecmp (person->partstat, "TENTATIVE") == 0)
+		param = icalparameter_new_partstat (ICAL_PARTSTAT_TENTATIVE);
+	else if (g_strcasecmp (person->partstat, "DELEGATED") == 0)
+		param = icalparameter_new_partstat (ICAL_PARTSTAT_DELEGATED);
+	else if (g_strcasecmp (person->partstat, "COMPLETED") == 0)
+		param = icalparameter_new_partstat (ICAL_PARTSTAT_COMPLETED);
+	else if (g_strcasecmp (person->partstat, "INPROCESS") == 0)
+		param = icalparameter_new_partstat (ICAL_PARTSTAT_INPROCESS);
+	else /* FIX ME, NEEDSACTION instead? */
+		param = icalparameter_new_partstat (ICAL_PARTSTAT_XNAME);
+	icalproperty_add_parameter (person_prop, param);
+
+	if (person->rsvp != FALSE) {
+		param = icalparameter_new_rsvp (TRUE);
+		icalproperty_add_parameter (person_prop, param);
+	}
+
+	if (g_strcasecmp (person->cutype, "INDIVIDUAL") == 0)
+		param = icalparameter_new_cutype (ICAL_CUTYPE_INDIVIDUAL);
+	else if (g_strcasecmp (person->cutype, "GROUP") == 0)
+		param = icalparameter_new_cutype (ICAL_CUTYPE_GROUP);
+	else if (g_strcasecmp (person->cutype, "RESOURCE") == 0)
+		param = icalparameter_new_cutype (ICAL_CUTYPE_RESOURCE);
+	else if (g_strcasecmp (person->cutype, "ROOM") == 0)
+		param = icalparameter_new_cutype (ICAL_CUTYPE_ROOM);
+	else /* FIX ME, INDIVIDUAL instead? */
+		param = icalparameter_new_cutype (ICAL_CUTYPE_UNKNOWN);
+	icalproperty_add_parameter (person_prop, param);
+
+	/* person->member is a list of ICAL_MEMBER_PARAMETER */
+	for (cur = person->member; cur; cur = cur->next) {
+		gchar *member = (gchar *) cur->data;
+		param = icalparameter_new_member (member);
+		icalproperty_add_parameter (person_prop, param);
+	}
+
+	/* person->deleg_to is a list of ICAL_DELEGATEDTO_PARAMETER */
+	for (cur = person->deleg_to; cur; cur = cur->next) {
+		gchar *deleg_to = (gchar *) cur->data;
+		param = icalparameter_new_delegatedto (deleg_to);
+		icalproperty_add_parameter (person_prop, param);
+	}
+
+	/* ret->deleg_from is a list of ICAL_DELEGATEDFROM_PARAMETER */
+	for (cur = person->deleg_from; cur; cur = cur->next) {
+		gchar *deleg_from = (gchar *) cur->data;
+		param = icalparameter_new_delegatedfrom (deleg_from);
+		icalproperty_add_parameter (person_prop, param);
+	}
+
+	param = icalparameter_new_sentby (person->sent_by);
+
+	/* ret->deleg_to is a list of ICAL_DIR_PARAMETER */
+	/* FIX ME ... */
+}
diff --git a/calendar/cal-util/icalendar-save.h b/calendar/cal-util/icalendar-save.h
new file mode 100644
index 0000000000..1e0ab59e70
--- /dev/null
+++ b/calendar/cal-util/icalendar-save.h
@@ -0,0 +1,13 @@
+#ifndef ICALENDAR_SAVE_H
+#define ICALENDAR_SAVE_H
+
+#include <ical.h>
+#include <cal-util/calobj.h>
+
+
+
+icalcomponent *icalcomponent_create_from_ical_object (iCalObject *ical);
+
+
+
+#endif
diff --git a/calendar/cal-util/icalendar.c b/calendar/cal-util/icalendar.c
index 1dcbadc817..8a15bb3cb4 100644
--- a/calendar/cal-util/icalendar.c
+++ b/calendar/cal-util/icalendar.c
@@ -223,8 +223,8 @@ ical_object_create_from_icalcomponent (icalcomponent* comp)
 		case ICAL_FREEBUSY_PROPERTY:
 			period = icalproperty_get_freebusy (prop);
 			ical->dtstart = icaltime_to_timet (&(period.start));
-			/* FIXME: period.end is specified as being relative to start, so 
-this may not be correct */
+			/* FIXME: period.end is specified as being relative
+			   to start, so this may not be correct */
 			ical->dtend   = icaltime_to_timet (&(period.end));
 			break;
 		case ICAL_TRANSP_PROPERTY:
@@ -534,7 +534,7 @@ parse_person (icalproperty* prop, gchar* value)
 
 	param = icalproperty_get_first_parameter (prop, ICAL_SENTBY_PARAMETER
 );
-	copy_str (&ret->sent_by, 
+	copy_str (&ret->sent_by,
 		  icalparameter_get_sentby (param));
 
 	param = icalproperty_get_first_parameter (prop, ICAL_DIR_PARAMETER);
diff --git a/calendar/pcs/Makefile.am b/calendar/pcs/Makefile.am
index 16b4f22dbd..545e403201 100644
--- a/calendar/pcs/Makefile.am
+++ b/calendar/pcs/Makefile.am
@@ -33,6 +33,8 @@ libpcs_a_SOURCES =		\
 	cal-factory.h		\
 	icalendar.c		\
 	icalendar.h		\
+	icalendar-save.c	\
+	icalendar-save.h	\
 	job.c			\
 	job.h
 
diff --git a/calendar/pcs/icalendar-save.c b/calendar/pcs/icalendar-save.c
new file mode 100644
index 0000000000..a639e5ef1d
--- /dev/null
+++ b/calendar/pcs/icalendar-save.c
@@ -0,0 +1,361 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
+
+#include <config.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include "icalendar-save.h"
+
+
+static void unparse_person (iCalPerson *person, icalproperty *person_prop);
+
+static struct icaltimetype timet_to_icaltime (time_t tt);
+
+
+
+icalcomponent*
+icalcomponent_create_from_ical_object (iCalObject *ical)
+{
+	icalcomponent_kind kind;
+	icalcomponent *comp;
+	icalproperty *prop;
+
+	switch (ical->type) {
+	case ICAL_EVENT: kind = ICAL_VEVENT_COMPONENT; break;
+	case ICAL_TODO: kind = ICAL_VTODO_COMPONENT; break;
+	case ICAL_JOURNAL: kind = ICAL_VJOURNAL_COMPONENT; break;
+	case ICAL_FBREQUEST: kind = ICAL_VFREEBUSY_COMPONENT; break;
+	case ICAL_TIMEZONE: kind = ICAL_VTIMEZONE_COMPONENT; break;
+	default:
+		kind = ICAL_NO_COMPONENT; break;
+	}
+
+	comp = icalcomponent_new (kind);
+
+	/*** calscale ***/
+	prop = icalproperty_new_calscale ("GREGORIAN");
+	icalcomponent_add_property (comp, prop);
+
+	/*** catagories ***/
+	if (ical->categories) {		
+		/* ical->categories is a GList of (char *) */
+		GList *cur;
+		for (cur = ical->categories; cur; cur = cur->next) {
+			prop = icalproperty_new_categories ((char *) cur);
+			icalcomponent_add_property (comp, prop);
+		}
+	}
+
+	/*** class ***/
+	if (ical->class) {
+		prop = icalproperty_new_class (ical->class);
+		icalcomponent_add_property (comp, prop);
+	}
+
+	/*** comment ***/
+	if (ical->comment) {
+		prop = icalproperty_new_comment (ical->comment);
+		icalcomponent_add_property (comp, prop);
+	}
+
+	/*** description ***/
+	if (ical->desc) {
+		prop = icalproperty_new_description (ical->desc);
+		icalcomponent_add_property (comp, prop);
+	}
+
+	/*** geo ***/
+	if (ical->geo.valid) {
+		struct icalgeotype v;
+		v.lat = ical->geo.latitude;
+		v.lon = ical->geo.longitude;
+		prop = icalproperty_new_geo (v);
+		icalcomponent_add_property (comp, prop);
+	}
+
+	/*** location ***/
+	if (ical->location) {
+		prop = icalproperty_new_location (ical->location);
+		icalcomponent_add_property (comp, prop);
+	}
+
+	/*** percentcomplete ***/
+	prop = icalproperty_new_percentcomplete (ical->percent);
+	icalcomponent_add_property (comp, prop);
+
+	/*** priority ***/
+	if (ical->priority) {
+		prop = icalproperty_new_priority (ical->priority);
+		icalcomponent_add_property (comp, prop);
+	}
+
+	/*** resources ***/
+	if (ical->resources) {
+		/* ical->resources is a GList of (char *) */
+		GList *cur;
+		for (cur = ical->resources; cur; cur = cur->next) {
+			prop = icalproperty_new_resources ((char *) cur);
+			icalcomponent_add_property (comp, prop);
+		}
+	}
+
+	/*** status ***/
+	if (ical->status) {
+		prop = icalproperty_new_status (ical->status);
+		icalcomponent_add_property (comp, prop);
+	}
+
+	/*** summary ***/
+	if (ical->summary) {
+		prop = icalproperty_new_summary (ical->summary);
+		icalcomponent_add_property (comp, prop);
+	}
+
+	/*** completed ***/
+	if (ical->completed) {
+		struct icaltimetype ictime;
+		ictime = timet_to_icaltime (ical->completed);
+		prop = icalproperty_new_completed (ictime);
+		icalcomponent_add_property (comp, prop);
+	}
+
+	/*** dtend ***/  /*** due ***/
+	if (ical->dtend) {
+		/* FIXME: We should handle timezone specifiers */
+		struct icaltimetype ictime;
+		ictime = timet_to_icaltime (ical->dtend);
+		if (ical->type == ICAL_TODO)
+			prop = icalproperty_new_due (ictime);
+		else
+			prop = icalproperty_new_dtend (ictime);
+		if (ical->date_only) {
+			icalparameter *param;
+			param = icalparameter_new (ICAL_VALUE_PARAMETER);
+			icalparameter_set_value (param, ICAL_VALUE_DATE);
+			icalproperty_add_parameter (prop, param);
+		}
+		icalcomponent_add_property (comp, prop);
+	}
+
+	/*** dtstart ***/
+	if (ical->dtstart) {
+		/* FIXME: We should handle timezone specifiers */
+		struct icaltimetype ictime;
+		ictime = timet_to_icaltime (ical->dtstart);
+		prop = icalproperty_new_dtstart (ictime);
+		if (ical->date_only) {
+			icalparameter *param;
+			param = icalparameter_new (ICAL_VALUE_PARAMETER);
+			icalparameter_set_value (param, ICAL_VALUE_DATE);
+			icalproperty_add_parameter (prop, param);
+		}
+		icalcomponent_add_property (comp, prop);
+	}
+
+	/*** duration ***/
+	{
+		/* FIX ME */
+	}
+
+	/*** freebusy ***/
+	{
+		/* FIX ME */
+	}
+
+	/*** transp ***/
+	{
+		if (ical->transp == ICAL_TRANSP_PROPERTY)
+			icalproperty_set_transp (prop, "TRANSPARENT");
+		else
+			icalproperty_set_transp (prop, "OPAQUE");
+		icalcomponent_add_property (comp, prop);
+	}
+
+	/*
+	  ICAL_TZID_PROPERTY:
+	  ICAL_TZNAME_PROPERTY:
+	  ICAL_TZOFFSETFROM_PROPERTY:
+	  ICAL_TZOFFSETTO_PROPERTY:
+	  ICAL_TZURL_PROPERTY:
+	*/
+
+	/*** attendee ***/
+	if (ical->attendee) {
+		/* a list of (iCalPerson *) */
+		GList *cur;
+		for (cur = ical->attendee; cur; cur = cur->next) {
+			iCalPerson *person = (iCalPerson *) cur->data;
+			prop = icalproperty_new_attendee ("FIX ME");
+			unparse_person (person, prop);
+			icalcomponent_add_property (comp, prop);
+		}
+	}
+
+	/*** contact ***/
+	if (ical->contact) {
+		/* a list of (iCalPerson *) */
+		GList *cur;
+		for (cur = ical->contact; cur; cur = cur->next) {
+			iCalPerson *person = (iCalPerson *) cur->data;
+			prop = icalproperty_new_contact ("FIX ME");
+			unparse_person (person, prop);
+			icalcomponent_add_property (comp, prop);
+		}
+	}
+
+	/*** organizer ***/
+	if (ical->organizer) {
+		prop = icalproperty_new_organizer ("FIX ME");
+		unparse_person (ical->organizer, prop);
+		icalcomponent_add_property (comp, prop);
+	}
+
+	/*** recurrenceid ***/
+	if (ical->recurid) {
+		struct icaltimetype ictime;
+		ictime = timet_to_icaltime (ical->recurid);
+		prop = icalproperty_new_recurrenceid (ictime);
+	}
+
+	/*** relatedto ***/
+
+	/*** url ***/
+
+	/*** uid ***/
+
+	/*** exdate ***/
+
+	/*** created ***/
+
+	/*** dtstamp ***/
+
+	/*** lastmodified ***/
+
+	/*** sequence ***/
+
+	/*** requeststatus ***/
+
+
+	/* then do subcomponents?  valarms? */
+
+	return comp;
+}
+
+
+static
+struct icaltimetype timet_to_icaltime (time_t tt)
+{
+	extern long timezone;
+	struct tm *t;
+	struct icaltimetype i;
+
+	t = gmtime (&tt);
+
+	/*return tt - (i->is_utc ? timezone : 0); */
+	i.is_utc = 0;
+
+	i.year = t->tm_year + 1900;
+	i.month = t->tm_mon + 1;
+	i.day = t->tm_mday;
+
+	if (t->tm_hour == 0 && t->tm_min == 0 && t->tm_sec == 0) {
+		i.is_date = 1;
+		i.hour = 0;
+		i.minute = 0;
+		i.second = 0;
+	} else {
+		i.is_date = 0;
+		i.hour = t->tm_hour;
+		i.minute = t->tm_min;
+		i.second = t->tm_sec;
+	}
+
+	return i;
+}
+
+
+/* fills in "person_prop" with information from "person" */
+
+static
+void unparse_person (iCalPerson *person, icalproperty *person_prop)
+{
+	icalparameter *param;
+	GList *cur;
+
+	/* convert iCalPerson to an icalproperty */
+
+	param = icalparameter_new_cn (person->name);
+	icalproperty_add_parameter (person_prop, param);
+
+	if (g_strcasecmp (person->role, "CHAIR") == 0)
+		param = icalparameter_new_role (ICAL_ROLE_CHAIR);
+	else if (g_strcasecmp (person->role, "REQPARTICIPANT") == 0)
+		param = icalparameter_new_role (ICAL_ROLE_REQPARTICIPANT);
+	else if (g_strcasecmp (person->role, "OPTPARTICIPANT") == 0)
+		param = icalparameter_new_role (ICAL_ROLE_OPTPARTICIPANT);
+	else if (g_strcasecmp (person->role, "NONPARTICIPANT") == 0)
+		param = icalparameter_new_role (ICAL_ROLE_NONPARTICIPANT);
+	else
+		param = icalparameter_new_role (ICAL_ROLE_XNAME);
+	icalproperty_add_parameter (person_prop, param);
+
+	if (g_strcasecmp (person->partstat, "NEEDSACTION") == 0)
+		param = icalparameter_new_partstat (ICAL_PARTSTAT_NEEDSACTION);
+	else if (g_strcasecmp (person->partstat, "ACCEPTED") == 0)
+		param = icalparameter_new_partstat (ICAL_PARTSTAT_ACCEPTED);
+	else if (g_strcasecmp (person->partstat, "DECLINED") == 0)
+		param = icalparameter_new_partstat (ICAL_PARTSTAT_DECLINED);
+	else if (g_strcasecmp (person->partstat, "TENTATIVE") == 0)
+		param = icalparameter_new_partstat (ICAL_PARTSTAT_TENTATIVE);
+	else if (g_strcasecmp (person->partstat, "DELEGATED") == 0)
+		param = icalparameter_new_partstat (ICAL_PARTSTAT_DELEGATED);
+	else if (g_strcasecmp (person->partstat, "COMPLETED") == 0)
+		param = icalparameter_new_partstat (ICAL_PARTSTAT_COMPLETED);
+	else if (g_strcasecmp (person->partstat, "INPROCESS") == 0)
+		param = icalparameter_new_partstat (ICAL_PARTSTAT_INPROCESS);
+	else /* FIX ME, NEEDSACTION instead? */
+		param = icalparameter_new_partstat (ICAL_PARTSTAT_XNAME);
+	icalproperty_add_parameter (person_prop, param);
+
+	if (person->rsvp != FALSE) {
+		param = icalparameter_new_rsvp (TRUE);
+		icalproperty_add_parameter (person_prop, param);
+	}
+
+	if (g_strcasecmp (person->cutype, "INDIVIDUAL") == 0)
+		param = icalparameter_new_cutype (ICAL_CUTYPE_INDIVIDUAL);
+	else if (g_strcasecmp (person->cutype, "GROUP") == 0)
+		param = icalparameter_new_cutype (ICAL_CUTYPE_GROUP);
+	else if (g_strcasecmp (person->cutype, "RESOURCE") == 0)
+		param = icalparameter_new_cutype (ICAL_CUTYPE_RESOURCE);
+	else if (g_strcasecmp (person->cutype, "ROOM") == 0)
+		param = icalparameter_new_cutype (ICAL_CUTYPE_ROOM);
+	else /* FIX ME, INDIVIDUAL instead? */
+		param = icalparameter_new_cutype (ICAL_CUTYPE_UNKNOWN);
+	icalproperty_add_parameter (person_prop, param);
+
+	/* person->member is a list of ICAL_MEMBER_PARAMETER */
+	for (cur = person->member; cur; cur = cur->next) {
+		gchar *member = (gchar *) cur->data;
+		param = icalparameter_new_member (member);
+		icalproperty_add_parameter (person_prop, param);
+	}
+
+	/* person->deleg_to is a list of ICAL_DELEGATEDTO_PARAMETER */
+	for (cur = person->deleg_to; cur; cur = cur->next) {
+		gchar *deleg_to = (gchar *) cur->data;
+		param = icalparameter_new_delegatedto (deleg_to);
+		icalproperty_add_parameter (person_prop, param);
+	}
+
+	/* ret->deleg_from is a list of ICAL_DELEGATEDFROM_PARAMETER */
+	for (cur = person->deleg_from; cur; cur = cur->next) {
+		gchar *deleg_from = (gchar *) cur->data;
+		param = icalparameter_new_delegatedfrom (deleg_from);
+		icalproperty_add_parameter (person_prop, param);
+	}
+
+	param = icalparameter_new_sentby (person->sent_by);
+
+	/* ret->deleg_to is a list of ICAL_DIR_PARAMETER */
+	/* FIX ME ... */
+}
diff --git a/calendar/pcs/icalendar-save.h b/calendar/pcs/icalendar-save.h
new file mode 100644
index 0000000000..1e0ab59e70
--- /dev/null
+++ b/calendar/pcs/icalendar-save.h
@@ -0,0 +1,13 @@
+#ifndef ICALENDAR_SAVE_H
+#define ICALENDAR_SAVE_H
+
+#include <ical.h>
+#include <cal-util/calobj.h>
+
+
+
+icalcomponent *icalcomponent_create_from_ical_object (iCalObject *ical);
+
+
+
+#endif
diff --git a/calendar/pcs/icalendar.c b/calendar/pcs/icalendar.c
index 1dcbadc817..8a15bb3cb4 100644
--- a/calendar/pcs/icalendar.c
+++ b/calendar/pcs/icalendar.c
@@ -223,8 +223,8 @@ ical_object_create_from_icalcomponent (icalcomponent* comp)
 		case ICAL_FREEBUSY_PROPERTY:
 			period = icalproperty_get_freebusy (prop);
 			ical->dtstart = icaltime_to_timet (&(period.start));
-			/* FIXME: period.end is specified as being relative to start, so 
-this may not be correct */
+			/* FIXME: period.end is specified as being relative
+			   to start, so this may not be correct */
 			ical->dtend   = icaltime_to_timet (&(period.end));
 			break;
 		case ICAL_TRANSP_PROPERTY:
@@ -534,7 +534,7 @@ parse_person (icalproperty* prop, gchar* value)
 
 	param = icalproperty_get_first_parameter (prop, ICAL_SENTBY_PARAMETER
 );
-	copy_str (&ret->sent_by, 
+	copy_str (&ret->sent_by,
 		  icalparameter_get_sentby (param));
 
 	param = icalproperty_get_first_parameter (prop, ICAL_DIR_PARAMETER);