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Move KML geometry parsing functions from farm_area_import to farm_map_kml.

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This commit is contained in:
Michael Stenta 2018-05-30 13:10:44 -04:00
parent 2ff620e49e
commit 2b4df1054f
3 changed files with 85 additions and 82 deletions
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1
modules/farm/farm_area/farm_area_import/farm_area_import.info
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@ -3,4 +3,5 @@ description = A tool for importing multiple area geometries from a single KML fi
core = 7.x
package = farmOS (beta)
dependencies[] = farm_area
dependencies[] = farm_map_kml
dependencies[] = geophp

83
modules/farm/farm_area/farm_area_import/farm_area_import.module
View file

@ -93,7 +93,7 @@ function farm_area_import_form($form, &$form_state) {
}
// Parse the KML into an array of geometries.
$geometries = farm_area_import_parse_kml_geometries($form_state['values']['kml']);
$geometries = farm_map_kml_parse_geometries($form_state['values']['kml']);
// Make the output wrapper into a fieldset.
$form['output']['#type'] = 'fieldset';
@ -263,84 +263,3 @@ function farm_area_import_form_create_submit(&$form, &$form_state) {
drupal_set_message(t('Area created: <a href="@path">@label</a>', array('@path' => url($area_uri['path']), '@label' => $area_label)));
}
}
/**
* Helper function for converting KML to a set of geometries.
*
* @param string $kml
* The KML string to parse.
*
* @return array
* Returns an array of geometries, with name, description, and WKT for each.
*/
function farm_area_import_parse_kml_geometries($kml) {
// Start an array to hold the geometries.
$geometries = array();
// Load the GeoPHP library.
geophp_load();
// Parse the KML into an XML object.
$xml = simplexml_load_string($kml);
// Determine the root element. Sometimes it is "Document".
$root = $xml;
if (isset($xml->Document)) {
$root = $xml->Document;
}
// If the KML file is organized into folders, iterate through them.
if (isset($root->Folder)) {
$folders = $folders = $root->Folder;
foreach ($folders as $folder) {
// Iterate through the KML Placemarks and parse their geometry info.
$placemarks = $folder->Placemark;
foreach ($placemarks as $placemark) {
$geometries[] = farm_area_import_parse_kml_placemark($placemark);
}
}
}
// Or, just iterate through the KML placemarks and parse their geometry info.
else {
$placemarks = $root->Placemark;
foreach ($placemarks as $placemark) {
$geometries[] = farm_area_import_parse_kml_placemark($placemark);
}
}
// Return the geometries.
return $geometries;
}
/**
* @param $placemark
* A SimpleXML Placemark object.
*
* @return array
* Returns information about the placemark, including name, description, and
* geometry in Well-Known Text (WKT).
*/
function farm_area_import_parse_kml_placemark($placemark) {
// Start a new array for the geometry info.
$geometry = array();
// Get the placemark name as a string.
$geometry['name'] = (string) $placemark->name;
// Get the placemark description as a string.
$geometry['description'] = (string) $placemark->description;
// Parse the placemark into a GeoPHP geometry object.
$placemark_xml = $placemark->asXML();
$geophp_geometry = geoPHP::load($placemark_xml, 'kml');
// Convert the geometry to WKT.
$geometry['wkt'] = $geophp_geometry->out('wkt');
// Return the geometry.
return $geometry;
}

83
modules/farm/farm_map/farm_map_kml/farm_map_kml.module
View file

@ -121,3 +121,86 @@ function farm_map_kml_action(array $entities, $context = array()) {
);
drupal_set_message(t($message, $args));
}
/**
* Helper function for converting KML to a set of geometries.
*
* @param string $kml
* The KML string to parse.
*
* @return array
* Returns an array of geometries, with name, description, and WKT for each.
*/
function farm_map_kml_parse_geometries($kml) {
// Start an array to hold the geometries.
$geometries = array();
// Load the GeoPHP library.
geophp_load();
// Parse the KML into an XML object.
$xml = simplexml_load_string($kml);
// Determine the root element. Sometimes it is "Document".
$root = $xml;
if (isset($xml->Document)) {
$root = $xml->Document;
}
// If the KML file is organized into folders, iterate through them.
if (isset($root->Folder)) {
$folders = $folders = $root->Folder;
foreach ($folders as $folder) {
// Iterate through the KML Placemarks and parse their geometry info.
$placemarks = $folder->Placemark;
foreach ($placemarks as $placemark) {
$geometries[] = farm_map_kml_parse_placemark($placemark);
}
}
}
// Or, just iterate through the KML placemarks and parse their geometry info.
else {
$placemarks = $root->Placemark;
foreach ($placemarks as $placemark) {
$geometries[] = farm_map_kml_parse_placemark($placemark);
}
}
// Return the geometries.
return $geometries;
}
/**
* Helper function for extracting information about a KML placemark.
*
* @param $placemark
* A SimpleXML Placemark object.
*
* @return array
* Returns information about the placemark, including name, description, and
* geometry in Well-Known Text (WKT).
*/
function farm_map_kml_parse_placemark($placemark) {
// Start a new array for the geometry info.
$geometry = array();
// Get the placemark name as a string.
$geometry['name'] = (string) $placemark->name;
// Get the placemark description as a string.
$geometry['description'] = (string) $placemark->description;
// Parse the placemark into a GeoPHP geometry object.
$placemark_xml = $placemark->asXML();
$geophp_geometry = geoPHP::load($placemark_xml, 'kml');
// Convert the geometry to WKT.
$geometry['wkt'] = $geophp_geometry->out('wkt');
// Return the geometry.
return $geometry;
}