Script to generate asset layer data.

layers/summary.php

@@ -0,0 +1,88 @@
+<?php
+
+$ROOT = dirname(__FILE__) . '/../../';
+
+$DIR = $ROOT . 'fixmystreet.com/layers';
+$i = new \RecursiveDirectoryIterator($DIR);
+$i = new \RegexIterator($i, '/\.map$/');
+$i = iterator_to_array($i);
+usort($i, function($a, $b) { return $a->getPathname() > $b->getPathname(); });
+
+$used_layers = [];
+foreach ($i as $map) {
+	$layers = parse_layers($map);
+	$used_layers = array_merge($used_layers, $layers);
+}
+
+$DIR = $ROOT . 'layers/';
+$i = new \RecursiveDirectoryIterator($DIR);
+$i = new \RecursiveIteratorIterator($i);
+$i = new \RegexIterator($i, '/\.(shp|gpkg|tab)$/i');
+$i = iterator_to_array($i);
+usort($i, function($a, $b) {
+	$a = $a->getPathname();
+	$b = $b->getPathname();
+	return [substr_count($a, '/'), $a] <=> [substr_count($b, '/'), $b];
+});
+
+$out = [];
+foreach ($i as $d) {
+	$ogr = `ogrinfo -ro -al -so '$d'`;
+	$data = parse_ogr($ogr);
+	if (!$data['date']) $data['date'] = filemtime($d);
+	$data['directory'] = str_replace($DIR, '', $d->getPathInfo());
+	$fn = str_replace($DIR, '', $d);
+	if (array_key_exists($fn, $used_layers)) {
+		$data['in_use'] = $used_layers[$fn];
+	}
+	$out[$fn] = $data;
+}
+
+$j = json_encode($out, JSON_PRETTY_PRINT);
+file_put_contents($DIR . 'summary.json', $j);
+
+function parse_ogr($ogr) {
+	preg_match('#^INFO: Open.*\n *using driver.*successful\.\n\nLayer name: (.*?)\n(?:Metadata:\n  DBF_DATE_LAST_UPDATE=(.*?)\n)?Geometry: (.*?)\nFeature Count: (.*?)\n(?:Extent: (.*?)\n)?Layer SRS WKT:\n(?:\(unknown\)|(?:GEOGCS|PROJCS).*?(?:1936|WGS 84).*\]\])\n(.*)#s', $ogr, $m);
+if (!$m) { print $ogr; exit; }
+	preg_match_all('#^(.*?): .*?$#m', $m[6], $mm);
+	return [
+		'name' => $m[1],
+		'date' => strtotime($m[2]),
+		'geometry' => $m[3],
+		'features' => $m[4],
+		'extent' => $m[5],
+		'fields' => $mm[1],
+	];
+}
+
+function parse_layers($map) {
+	$state = [];
+	$layer = '';
+	$used = [];
+	foreach (file($map) as $line) {
+		$line = trim($line);
+		if (!$line) {
+			continue;
+		}
+		if (preg_match('/^END/', $line)) {
+			$fin = array_pop($state);
+			if ($fin == 'LAYER') {
+				preg_match("#NAME ['\"](.*?)['\"]#", $layer, $m);
+				$name = $m[1];
+				if (preg_match("#CONNECTIONTYPE UNION#", $layer)) {
+					# Nothing
+				} elseif (preg_match("#CONNECTION ['\"](.*?)['\"]#", $layer, $m)) {
+					$used[str_replace('../../layers/', '', $m[1])] = $name;
+				} elseif (preg_match("#^DATA ['\"](.*?)['\"]#m", $layer, $m)) {
+					$used["$m[1].shp"] = $name;
+				}
+				$layer = '';
+			}
+		} elseif (in_array($line, ['MAP', 'OUTPUTFORMAT', 'LAYER', 'PROJECTION', 'METADATA', 'WEB', 'CLASS', 'STYLE'])) {
+			$state[] = $line;
+		} elseif (end($state) == 'LAYER') {
+			$layer .= "$line\n";
+		}
+	}
+	return $used;
+}