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 +1,90 @@
+<?php
+
+namespace Xentral\Components\Pdf\Merger;
+
+use fpdi;
+use Xentral\Components\Pdf\Exception\FileExistsException;
+use Xentral\Components\Pdf\Exception\FileNotFoundException;
+use Xentral\Components\Pdf\Exception\FileNotWritableException;
+use Xentral\Components\Pdf\Exception\InvalidArgumentException;
+use Xentral\Components\Pdf\Exception\PdfIncompatibleException;
+
+/**
+ * Anti-Corruption-Layer für alte FPDI-Klasse
+ */
+final class FpdiPdfMerger extends AbstractPdfMerger
+{
+    /**
+     * @param string[] $sourceFiles Array with files pathes
+     * @param string   $targetFile  Path to merged file
+     *
+     * @throws InvalidArgumentException If required parameter is invalid/empty
+     * @throws FileNotWritableException If target file is not writable
+     * @throws FileExistsException If target file already exists
+     * @throws FileNotFoundException If one of the source files does not exist
+     * @throws PdfIncompatibleException If XRef-Pointer is missing
+     *
+     * @return void
+     */
+    public function mergeFiles(array $sourceFiles, $targetFile)
+    {
+        $this->preCheckMergeFiles($sourceFiles, $targetFile);
+
+        $fpdi = new fpdi('P', 'mm', 'A4');
+
+        foreach ($sourceFiles as $file) {
+            if (!$this->hasPdfXrefError($file)) {
+                throw new PdfIncompatibleException(sprintf(
+                    'Can not merge PDFs. Unable to find pointer to xref table in file "%s".', $file
+                ));
+            }
+            $pageCount = $fpdi->setSourceFile($file);
+
+            for ($pageNumber = 1; $pageNumber <= $pageCount; $pageNumber++) {
+                $templateId = $fpdi->importPage($pageNumber);
+                $size = $fpdi->getTemplateSize($templateId);
+
+                // Create empty page
+                if ($size['w'] > $size['h']) {
+                    // Landscape orientation
+                    $fpdi->addPage('L', [$size['h'], $size['w']]);
+                } else {
+                    // Portrait orientation
+                    $fpdi->addPage('P', [$size['w'], $size['h']]);
+                }
+
+                // Import page
+                $fpdi->useTemplate($templateId);
+            }
+        }
+
+        $fpdi->Output($targetFile, 'F');
+    }
+
+    /**
+     * Helper method to detect xref-Error
+     *
+     * @see \fpdi_pdf_parser::pdf_find_xref
+     *
+     * @param string $pdfFile Path to pdf file
+     *
+     * @return bool
+     */
+    public function hasPdfXrefError($pdfFile)
+    {
+        $resource = @fopen($pdfFile, 'rb');
+        fseek($resource, -50, SEEK_END);
+        $data = fread($resource, 50);
+
+        $foundXrefOffset = preg_match('/startxref\s*(\d+)\s*%%EOF\s*$/', $data, $matches);
+        if (!$foundXrefOffset) {
+            return false;
+        }
+
+        $xrefOffset = (int)$matches[1];
+        fseek($resource, $xrefOffset);
+        $data = trim(fgets($resource));
+
+        return $data === 'xref';
+    }
+}