From 80f5e796cdc278e352bb65e033ef5203898c9398 Mon Sep 17 00:00:00 2001
From: jstaerk <jstaerk@usegroup.de>
Date: Sun, 26 Nov 2023 18:14:17 +0100
Subject: [PATCH] backport to java 8

---
 .../org/mustangproject/ZUGFeRD/ZUGFeRDExporterFromPDFA.java | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/library/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRDExporterFromPDFA.java b/library/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRDExporterFromPDFA.java
index 48b2129b..bf2f7731 100644
--- a/library/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRDExporterFromPDFA.java
+++ b/library/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRDExporterFromPDFA.java
@@ -62,7 +62,11 @@ public class ZUGFeRDExporterFromPDFA implements IZUGFeRDExporter {
 
 	private byte[] fileToByteArrayInputStream(String pdfFilename) throws IOException {
 		FileInputStream fileInputStream = new FileInputStream(pdfFilename);
-		return fileInputStream.readAllBytes();
+		fileInputStream.reset();
+		byte[] bytes = new byte[fileInputStream.available()];
+		DataInputStream dataInputStream = new DataInputStream(fileInputStream);
+		dataInputStream.readFully(bytes);
+		return bytes;
 	}
 
 	/***