From 6c16f6564994a3ea70da88c62cc16bb6e18231fd Mon Sep 17 00:00:00 2001
From: Michael Bangas <michael.bangas@vector.com>
Date: Thu, 12 Dec 2024 11:20:16 +0100
Subject: [PATCH] Utilize mark and reset for stream handling

---
 .../src/org/eclipse/swt/svg/JSVGRasterizer.java          | 9 +++++++--
 .../common/org/eclipse/swt/graphics/SVGRasterizer.java   | 2 +-
 2 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/bundles/org.eclipse.swt.svg/src/org/eclipse/swt/svg/JSVGRasterizer.java b/bundles/org.eclipse.swt.svg/src/org/eclipse/swt/svg/JSVGRasterizer.java
index 6141c4aabfe..6042a8d4d48 100644
--- a/bundles/org.eclipse.swt.svg/src/org/eclipse/swt/svg/JSVGRasterizer.java
+++ b/bundles/org.eclipse.swt.svg/src/org/eclipse/swt/svg/JSVGRasterizer.java
@@ -165,7 +165,12 @@ public boolean isSVGFile(InputStream stream) throws IOException {
 		if (stream == null) {
 	        throw new IllegalArgumentException("InputStream cannot be null");
 	    }
-	    int firstByte = inputStream.read();
-	    return firstByte == '<';
+		stream.mark(Integer.MAX_VALUE);
+		try {
+		    int firstByte = stream.read();
+		    return firstByte == '<';
+		} finally {
+			stream.reset();
+		}
 	}
 }
diff --git a/bundles/org.eclipse.swt/Eclipse SWT/common/org/eclipse/swt/graphics/SVGRasterizer.java b/bundles/org.eclipse.swt/Eclipse SWT/common/org/eclipse/swt/graphics/SVGRasterizer.java
index 5342d168e86..46140bffe5f 100644
--- a/bundles/org.eclipse.swt/Eclipse SWT/common/org/eclipse/swt/graphics/SVGRasterizer.java	
+++ b/bundles/org.eclipse.swt/Eclipse SWT/common/org/eclipse/swt/graphics/SVGRasterizer.java	
@@ -37,7 +37,7 @@ public interface SVGRasterizer {
 	/**
 	 * Determines whether the given {@link InputStream} contains a SVG file.
 	 *
-	 * @param inputStream the input stream to check.
+	 * @param stream the input stream to check.
 	 * @return {@code true} if the input stream contains SVG content; {@code false}
 	 *         otherwise.
 	 * @throws IOException              if an error occurs while reading the stream.