Initial xentral_oss_20.3.c9ffacf

2021-05-21 08:49:41 +02:00
parent 5406e4a551
commit 34e5ac43d9
18884 changed files with 2109867 additions and 0 deletions
@@ -0,0 +1,67 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Xentral\Modules\HocrParser\Service;
+
+use DOMDocument;
+use Xentral\Modules\HocrParser\Data\BoundingBox;
+
+final class HocrParser
+{
+    /**
+     * @param string $content HOCR-Dokument
+     *
+     * @return array|BoundingBox[]
+     */
+    public function parse(string $content): array
+    {
+        $boxes = [];
+
+        $dom = new DOMDocument;
+        $dom->loadXML($content);
+        $spans = $dom->getElementsByTagName('span');
+
+        /** @var DOMElement $span */
+        foreach ($spans as $span) {
+            if ($span->getAttribute('class') === 'ocrx_word') {
+                $title = $span->getAttribute('title');
+                $coords = $this->extractCoordinates($title);
+                $text = trim($span->nodeValue);
+
+                // Boxen ohne Text auslassen; kann vorkommen bei Barcode-Fonts
+                if (empty($text)) {
+                    continue;
+                }
+
+                // Boxen mit Text sammeln
+                $boxes[] = new BoundingBox(
+                    $coords['tlx'], $coords['tly'], $coords['brx'], $coords['bry'], ['text' => $text]
+                );
+            }
+        }
+
+        return $boxes;
+    }
+
+    /**
+     * @param string $text
+     *
+     * @return array|bool
+     */
+    private function extractCoordinates(string $text)
+    {
+        // bbox 599 2737 743 2758; x_wconf 96
+        $parts = explode(' ', $text);
+        if ($parts[0] === 'bbox') {
+            return [
+                'tlx' => (int)$parts[1], // Top left X-Coordinate
+                'tly' => (int)$parts[2], // Top left Y
+                'brx' => (int)$parts[3], // Bottom right X
+                'bry' => (int)$parts[4], // Bottom right Y
+            ];
+        }
+
+        return false;
+    }
+}