First commit

.gitignore

@@ -0,0 +1,4 @@
+node_modules/
+vendor/
+composer.lock
+config.yml

composer.json

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+{
+ "name": "geo6/drawing-tool",
+ "description": "Draw an area and export it using ogr2ogr in several formats",
+ "type": "project",
+ "license": "GPL-3.0",
+ "authors": [
+ {
+ "name": "Jonathan Beliën"
+ }
+ ],
+ "require": {
+ "symfony/yaml": "^3.2"
+ }
+}

export.php

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+<?php
+require __DIR__.'/vendor/autoload.php';
+require 'fn.php';
+
+use Symfony\Component\Yaml\Yaml;
+
+$config = Yaml::parse(file_get_contents(__DIR__.'/config.yml'));
+
+if (isset($_GET['id'])) {
+ if (file_exists(sys_get_temp_dir().'/drawing-tool/'.$_GET['id']) && is_dir(sys_get_temp_dir().'/drawing-tool/'.$_GET['id'])) {
+ $glob = glob(sys_get_temp_dir().'/drawing-tool/'.$_GET['id'].'/*.zip');
+ if (count($glob) === 1) {
+ $file = $glob[0];
+
+ if(ini_get('zlib.output_compression')) { ini_set('zlib.output_compression', 'Off'); }
+
+ header('Pragma: public'); // required
+ header('Expires: 0'); // no cache
+ header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
+ header('Last-Modified: '.gmdate ('D, d M Y H:i:s', filemtime($file)).' GMT');
+ header('Cache-Control: private', FALSE);
+ header('Content-Type: application/zip');
+ header('Content-Disposition: attachment; filename="'.basename($file).'"');
+ header('Content-Transfer-Encoding: binary');
+ header('Content-Length: '.filesize($file));
+ header('Connection: close');
+ readfile($file); // push it out
+ exit();
+ } else {
+ header("HTTP/1.1 404 Not Found");
+ exit();
+ }
+ } else {
+ header("HTTP/1.1 404 Not Found");
+ exit();
+ }
+}
+else if (isset($_POST['json'])) {
+ header('Content-type: application/json');
+
+ try {
+ $json = json_decode($_POST['json']);
+ if (is_null($json)) {
+ throw new ErrorException(json_last_error_msg());
+ }
+ } catch (ErrorException $e) {
+ echo json_encode($e);
+ exit();
+ }
+
+ $warnings = array();
+ $temp = sys_get_temp_dir();
+ $id = uniqid();
+ $time = date('YmdHis');
+
+ $dir = $temp.'/drawing-tool';
+ if (!file_exists($dir) || !is_dir($dir)) { mkdir($dir); }
+
+ $dir .= '/'.$id;
+ if (!file_exists($dir) || !is_dir($dir)) { mkdir($dir); }
+
+ if (!file_exists($dir.'/GeoJSON') || !is_dir($dir.'/GeoJSON')) { mkdir($dir.'/GeoJSON'); }
+ file_put_contents($dir.'/GeoJSON/'.$time.'WGS84.json', json_encode($json));
+
+ $source = $dir.'/GeoJSON/'.$time.'WGS84.json';
+ $valid = TRUE;
+ $validGeometry = array();
+
+ try {
+ $pg = pg_connect('host='.$config['postgresql']['host'].' port='.$config['postgresql']['port'].' dbname='.$config['postgresql']['dbname'].' user='.$config['postgresql']['user'].' password='.$config['postgresql']['password']);
+
+ foreach ($json->features as $i => $feature) {
+ $q = pg_query_params($pg, "SELECT ST_IsValid(ST_GeomFromGeoJSON($1))", array(
+ json_encode($feature->geometry)
+ ));
+ $r = pg_fetch_result($q, 0, 0);
+ pg_free_result($q);
+
+ if ($r === 'f') {
+ $valid = FALSE;
+
+ $q = pg_query_params("SELECT ST_AsGeoJSON(ST_MakeValid(ST_GeomFromGeoJSON($1)), 6)", array(
+ json_encode($feature->geometry)
+ ));
+ $geom = pg_fetch_result($q, 0, 0);
+ pg_free_result($q);
+
+ $feature->geometry = json_decode($geom);
+ }
+
+ $validGeometry[$i] = $feature->geometry;
+ }
+
+ if ($valid === FALSE) {
+ file_put_contents($source, json_encode($json));
+ }
+
+ pg_close($pg);
+ } catch (ErrorException $e) {
+ echo json_encode($e);
+ exit();
+ }
+
+ foreach ($config['formats'] as $format) {
+ $params = (isset($format['params']) ? $format['params'] : array());
+
+ if (isset($format['srs'])) {
+ foreach ($format['srs'] as $srs) {
+ if ($srs === 'EPSG:31370') {
+ $fname = $time.'Lambert72';
+ } else if ($srs === 'EPSG:4326') {
+ $fname = $time.'WGS84';
+ } else {
+ $fname = $time;
+ }
+ export($source, $dir.'/'.$format['code'].'/'.$fname, $format['code'], $srs, $params);
+ }
+ } else {
+ $fname = $time.'WGS84';
+ export($source, $dir.'/'.$format['code'].'/'.$fname, $format['code'], 'EPSG:4326', $params);
+ }
+ }
+
+ try {
+ $zip = new ZipArchive;
+ $zipOpen = $zip->open($dir.'/'.$time.'.zip', ZipArchive::CREATE);
+ if ($zipOpen !== TRUE) {
+ switch ($zipOpen) {
+ case ZipArchive::ER_EXISTS:
+ throw new ErrorException('File already exists.');
+ break;
+ /*
+ Add missing error codes
+ */
+ default:
+ throw new ErrorException('Unknown error.');
+ break;
+ }
+ }
+
+ $glob = glob($dir.'/*/*.*');
+ foreach ($glob as $g) {
+ $zip->addFile($g, basename(dirname($g)).'/'.basename($g));
+ }
+
+ $zip->close();
+
+ $result = array(
+ 'id' => $id,
+ 'filename' => $time.'.zip'
+ );
+
+ if ($valid === FALSE) {
+ $result['validGeometry'] = $validGeometry;
+ }
+
+ echo json_encode($result);
+ } catch (ErrorException $e) {
+ echo json_encode($e);
+ exit();
+ }
+}
+exit();

fn.php

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+<?php
+/**
+ *
+ */
+function ogr2ogr($format, $dst, $src, $params = NULL, &$stdout = NULL, &$stderr = NULL) {
+ if (is_array($src)) {
+ $source = escapeshellarg($src[0]);
+ $source .= ' ';
+ $layers = explode(' ', $src[1]); foreach ($layers as $l) $source .= escapeshellarg($l);
+ } else {
+ $source = escapeshellarg($src);
+ }
+
+ $descriptorspec = array(
+ 0 => array('pipe', 'r'), // stdin
+ 1 => array('pipe', 'w'), // stdout
+ 2 => array('pipe', 'w') // stderr
+ );
+
+ $process = proc_open('ogr2ogr -f '.escapeshellarg($format).' '.$params.' '.escapeshellarg($dst).' '.$source, $descriptorspec, $pipes);
+
+ if (is_resource($process)) {
+ $stdout = stream_get_contents($pipes[1]);
+ fclose($pipes[1]);
+
+ $stderr = stream_get_contents($pipes[2]) ;
+ fclose($pipes[2]);
+
+ $return_value = proc_close($process);
+ } else {
+ return FALSE;
+ }
+
+ return ($return_value === 0);
+}
+
+/**
+ *
+ */
+function export($source, $file, $format, $srs = 'EPSG:4326', $params = array()) {
+ global $warnings;
+
+ $dir = dirname($file);
+ $fname = basename($file);
+
+ switch ($format) {
+ case "ESRI Shapefile":
+ $file .= ".shp";
+ break;
+ case "GML":
+ $file .= ".gml";
+ break;
+ case "KML":
+ $file .= ".kml";
+ break;
+ case "MapInfo File":
+ if (isset($params['dsco']) && in_array('FORMAT=MIF', $params['dsco'])) {
+ $file .= ".mif";
+ } else {
+ $file .= ".tab";
+ }
+ break;
+ default:
+ break;
+ }
+
+ try {
+ if (!file_exists($dir) || !is_dir($dir)) { mkdir($dir, 0777, TRUE); }
+
+ $params = '';
+ if ($srs !== 'EPSG:4326') {
+ $params .= ' -s_srs EPSG:4326';
+ $params .= ' -t_srs '.$srs;
+ }
+
+ $ogr = ogr2ogr($format, $file, $source, $params, $stdout, $stderr);
+ if ($ogr === FALSE) {
+ throw new Exception($stderr);
+ }
+ } catch (Exception $e) {
+ $warnings[] = $e->getMessage();
+ }
+}