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guifi_gml.inc.php
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<?php
/**
* @file guifi_gml.inc.php
*/
function guifi_gml($zid,$action = "help",$type = 'gml') {
if ($action == "help") {
$zone = db_fetch_object(db_query('SELECT title, nick FROM {guifi_zone} WHERE id = %d',$zid));
drupal_set_breadcrumb(guifi_zone_ariadna($zid));
$output = '<div id="guifi">';
$output .= '<h2>'.t('Zone %zname%',array('%zname%' => $zone->title)).'</h2>';
$output .= '<p>'.t('You must specify which data do you want to export, the following options are available:').'</p>';
$output .= '<ol><li>'. l(t('Nodes'), "guifi/gml/".$zid."/nodes", array('title' => t('export zone nodes in gml format')) ).'</li>';
$output .= '<li>'. l(t('Links'), "guifi/gml/".$zid."/links", array('title' => t('export zone links in gml format')) ).'</li></ol>';
$output .= '<p>'.t('The <a href="http://opengis.net/gml/">GML</a> is a Markup Language XML for Geography described at the <a href="http://www.opengeospatial.org/">Open Geospatial Consortium</a>').'</p>';
$output .= '<p>'.t('<b>IMPORTANT LEGAL NOTE:</b> This network information is under the <a href="http://guifi.net/ComunsSensefils/">Comuns Sensefils</a> license, and therefore, available for any other network under the same licensing. If is not your case, you should ask for permission before using it.</a>').'</p>';
$output .= "</div>";
print theme('page',$output,t('export %zname% in GML format',array('%zname%' => $z->title)));
return;
}
switch ($action) {
case 'links':
guifi_gml_links($zid,$type);
break;
case 'nodes':
guifi_gml_nodes($zid,$type);
break;
}
} //EOF function guifi_gml
function guifi_gml_nodes($zid,$type) {
$minx = 180; $miny = 90; $maxx= -180; $maxy = -90;
$zchilds = guifi_zone_childs($zid);
$res = db_query(
"SELECT id,nick,lat,lon,zone_id,status_flag " .
"FROM {guifi_location} WHERE location_type = 'node'");
while ($row = db_fetch_object($res)) {
if (($row->zone_id != $zid) and (!in_array($row->zone_id,$zchilds)))
continue;
$rsql = db_query(
"SELECT mode " .
"FROM {guifi_radios} " .
"WHERE nid = %d",
$row->id);
$rcount = 0;
$node_type = 'N_A';
while ($r = db_fetch_object($rsql)) {
$rcount++;
if ($rcount == 1)
$node_type = $r->mode;
else {
$node_type = 'Supernode';
break;
}
}
if ($type == 'gml') {
$output .= '
<gml:featureMember>
<dnodes fid="'.$row->id.'">
<ogr:geometryProperty><gml:Point><gml:coordinates>'.$row->lon.','.$row->lat.'</gml:coordinates></gml:Point></ogr:geometryProperty>
<NODE_ID>'.$row->id.'</NODE_ID>
<NODE_NAME>'.$row->nick.'</NODE_NAME>
<NODE_TYPE>'.$node_type.'</NODE_TYPE>
<STATUS>'.$row->status_flag.'</STATUS>
</dnodes>
</gml:featureMember>';
} else {
$output .= $row->id.','.$row->lon.','.$row->lat.','.$row->nick.','.$node_type.','.$row->status_flag."\n";
}
if ($row->lon > $maxx) $maxx = $row->lon;
if ($row->lat > $maxy) $maxy = $row->lat;
if ($row->lon < $minx) $minx = $row->lon;
if ($row->lat < $miny) $miny = $row->lat;
} // while nodes
drupal_set_header('Content-Type: application/xml; charset=utf-8');
if ($type == 'gml') print '<?xml version="1.0" encoding="utf-8" ?>
<ogr:FeatureCollection
xmlns:xsi="http://www.w3c.org/2001/XMLSchema-instance"
xsi:schemaLocation=". dnodes.xsd"
xmlns:ogr="http://ogr.maptools.org/"
xmlns:gml="http://www.opengis.net/gml">
<gml:boundedBy>
<gml:Box>
<gml:coord><gml:X>'.$minx.'</gml:X><gml:Y>'.$miny.'</gml:Y></gml:coord>
<gml:coord><gml:X>'.$maxx.'</gml:X><gml:Y>'.$maxy.'</gml:Y></gml:coord>
</gml:Box>
</gml:boundedBy>';
print $output;
if ($type == 'gml') print '
</ogr:FeatureCollection>';
} // EOF function guifi_gml_nodes()
function guifi_gml_links($zid,$type) {
$oGC = new GeoCalc();
$minx = 180; $miny = 90; $maxx= -180; $maxy = -90;
$res = db_query(
"SELECT id,link_type,flag " .
"FROM {guifi_links} " .
"WHERE link_type != 'cable' " .
"GROUP BY 1,2 " .
"HAVING count(*) = 2");
$zchilds = guifi_zone_childs($zid);
while ($row = db_fetch_object($res)) {
$resnode = db_query(
"SELECT n.id, n.zone_id, n.nick,n.lat, n.lon, n.status_flag " .
"FROM {guifi_links} l, {guifi_location} n " .
"WHERE l.id = %d AND l.nid=n.id",
$row->id);
$nl = array();
while ($n = db_fetch_object($resnode)) {
$nl[] = $n;
}
if (count($nl) == 2)
if ((in_array($nl[0]->zone_id,$zchilds)) || (in_array($nl[1]->zone_id,$zchilds))) {
$distance = round($oGC->EllipsoidDistance($nl[0]->lat,$nl[0]->lon, $nl[1]->lat, $nl[1]->lon),3);
$status = $row->flag;
if ($type == 'gml') $output .= '
<gml:featureMember>
<dlinks fid="'.$row->id.'">
<NODE1_ID>'.$nl[0]->id.'</NODE1_ID>
<NODE1_NAME>'.$nl[0]->nick.'</NODE1_NAME>
<NODE2_ID>'.$nl[1]->id.'</NODE2_ID>
<NODE2_NAME>'.$nl[1]->nick.'</NODE2_NAME>
<KMS>'.$distance.'</KMS>
<LINK_TYPE>'.$row->link_type.'</LINK_TYPE>
<STATUS>'.$status.'</STATUS>
<ogr:geometryProperty><gml:LineString><gml:coordinates>'.$nl[0]->lon.','.$nl[0]->lat.' '.$nl[1]->lon.','.$nl[1]->lat.'</gml:coordinates></gml:LineString></ogr:geometryProperty>
</dlinks>
</gml:featureMember>';
else
$output .= $row->id.','.$nl[0]->id.','.$nl[0]->nick.','.$nl[1]->id.','.$nl[1]->nick.','.$distance.','.$row->link_type.','.$status.','.$nl[0]->lon.','.$nl[0]->lat.','.$nl[1]->lon.','.$nl[1]->lat."\n";
if ($nl[0]->lon > $maxx) $maxx = $nl[0]->lon;
if ($nl[0]->lat > $maxy) $maxy = $nl[0]->lat;
if ($nl[0]->lon < $minx) $minx = $nl[0]->lon;
if ($nl[0]->lat < $miny) $miny = $nl[0]->lat;
if ($nl[1]->lon > $maxx) $maxx = $nl[1]->lon;
if ($nl[1]->lat > $maxy) $maxy = $nl[1]->lat;
if ($nl[1]->lon < $minx) $minx = $nl[1]->lon;
if ($nl[1]->lat < $miny) $miny = $nl[1]->lat;
}
}
drupal_set_header('Content-Type: application/xml; charset=utf-8');
if ($type == 'gml') print '<?xml version="1.0" encoding="utf-8" ?>
<ogr:FeatureCollection
xmlns:xsi="http://www.w3c.org/2001/XMLSchema-instance"
xsi:schemaLocation=". dlinks.xsd"
xmlns:ogr="http://ogr.maptools.org/"
xmlns:gml="http://www.opengis.net/gml">
<gml:boundedBy>
<gml:Box>
<gml:coord><gml:X>'.$minx.'</gml:X><gml:Y>'.$miny.'</gml:Y></gml:coord>
<gml:coord><gml:X>'.$maxx.'</gml:X><gml:Y>'.$maxy.'</gml:Y></gml:coord>
</gml:Box>
</gml:boundedBy>';
print $output;
if ($type == 'gml') print '</ogr:FeatureCollection>';
} // eof function guifi_gml_links()
?>