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/*
* viking -- GPS Data and Topo Analyzer, Explorer, and Manager
*
* Copyright (C) 2003-2005, Evan Battaglia <gtoevan@gmx.net>
*
* 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, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <glib.h>
#include <string.h>
#include "coords.h"
#include "vikcoord.h"
#include "vikwaypoint.h"
#include "globals.h"
#include <glib/gi18n.h>
VikWaypoint *vik_waypoint_new()
{
VikWaypoint *wp = g_malloc0 ( sizeof ( VikWaypoint ) );
wp->altitude = VIK_DEFAULT_ALTITUDE;
wp->name = g_strdup(_("Waypoint"));
return wp;
}
// Hmmm tempted to put in new constructor
void vik_waypoint_set_name(VikWaypoint *wp, const gchar *name)
{
if ( wp->name )
g_free ( wp->name );
wp->name = g_strdup(name);
}
void vik_waypoint_set_comment_no_copy(VikWaypoint *wp, gchar *comment)
{
if ( wp->comment )
g_free ( wp->comment );
wp->comment = comment;
}
void vik_waypoint_set_comment(VikWaypoint *wp, const gchar *comment)
{
if ( wp->comment )
g_free ( wp->comment );
if ( comment && comment[0] != '\0' )
wp->comment = g_strdup(comment);
else
wp->comment = NULL;
}
void vik_waypoint_set_description(VikWaypoint *wp, const gchar *description)
{
if ( wp->description )
g_free ( wp->description );
if ( description && description[0] != '\0' )
wp->description = g_strdup(description);
else
wp->description = NULL;
}
void vik_waypoint_set_image(VikWaypoint *wp, const gchar *image)
{
if ( wp->image )
g_free ( wp->image );
if ( image && image[0] != '\0' )
wp->image = g_strdup(image);
else
wp->image = NULL;
// NOTE - ATM the image (thumbnail) size is calculated on demand when needed to be first drawn
}
void vik_waypoint_set_symbol(VikWaypoint *wp, const gchar *symname)
{
if ( wp->symbol )
g_free ( wp->symbol );
if ( symname && symname[0] != '\0' )
wp->symbol = g_strdup(symname);
else
wp->symbol = NULL;
}
void vik_waypoint_free(VikWaypoint *wp)
{
if ( wp->comment )
g_free ( wp->comment );
if ( wp->description )
g_free ( wp->description );
if ( wp->image )
g_free ( wp->image );
if ( wp->symbol )
g_free ( wp->symbol );
g_free ( wp );
}
VikWaypoint *vik_waypoint_copy(const VikWaypoint *wp)
{
VikWaypoint *new_wp = vik_waypoint_new();
new_wp->coord = wp->coord;
new_wp->visible = wp->visible;
new_wp->altitude = wp->altitude;
vik_waypoint_set_name(new_wp,wp->name);
vik_waypoint_set_comment(new_wp,wp->comment);
vik_waypoint_set_description(new_wp,wp->description);
vik_waypoint_set_image(new_wp,wp->image);
vik_waypoint_set_symbol(new_wp,wp->symbol);
return new_wp;
}
/*
* Take a Waypoint and convert it into a byte array
*/
void vik_waypoint_marshall ( VikWaypoint *wp, guint8 **data, guint *datalen)
{
GByteArray *b = g_byte_array_new();
guint len;
// This creates space for fixed sized members like gints and whatnot
// and copies that amount of data from the waypoint to byte array
g_byte_array_append(b, (guint8 *)wp, sizeof(*wp));
// This allocates space for variant sized strings
// and copies that amount of data from the waypoint to byte array
#define vwm_append(s) \
len = (s) ? strlen(s)+1 : 0; \
g_byte_array_append(b, (guint8 *)&len, sizeof(len)); \
if (s) g_byte_array_append(b, (guint8 *)s, len);
vwm_append(wp->name);
vwm_append(wp->comment);
vwm_append(wp->description);
vwm_append(wp->image);
vwm_append(wp->symbol);
*data = b->data;
*datalen = b->len;
g_byte_array_free(b, FALSE);
#undef vwm_append
}
/*
* Take a byte array and convert it into a Waypoint
*/
VikWaypoint *vik_waypoint_unmarshall (guint8 *data, guint datalen)
{
guint len;
VikWaypoint *new_wp = vik_waypoint_new();
// This copies the fixed sized elements (i.e. visibility, altitude, image_width, etc...)
memcpy(new_wp, data, sizeof(*new_wp));
data += sizeof(*new_wp);
// Now the variant sized strings...
#define vwu_get(s) \
len = *(guint *)data; \
data += sizeof(len); \
if (len) { \
(s) = g_strdup((gchar *)data); \
} else { \
(s) = NULL; \
} \
data += len;
vwu_get(new_wp->name);
vwu_get(new_wp->comment);
vwu_get(new_wp->description);
vwu_get(new_wp->image);
vwu_get(new_wp->symbol);
return new_wp;
#undef vwu_get
}
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