From 65df1d336fa9cf9db07b6d6d8e5135e769f41a0e Mon Sep 17 00:00:00 2001
From: Jonas Jenwald <jonas.jenwald@gmail.com>
Date: Sat, 15 Feb 2025 14:18:07 +0100
Subject: [PATCH] Check more of the stream when looking for commands after
 inline image (issue 19494)

Currently we only check `followingBytes`, which turns out to be too short to find e.g. valid transform (cm) commands with decimal arguments.
---
 src/core/parser.js            | 6 +++++-
 test/pdfs/issue19494.pdf.link | 1 +
 test/test_manifest.json       | 9 +++++++++
 3 files changed, 15 insertions(+), 1 deletion(-)
 create mode 100644 test/pdfs/issue19494.pdf.link

diff --git a/src/core/parser.js b/src/core/parser.js
index 94b2e7894..50ea563db 100644
--- a/src/core/parser.js
+++ b/src/core/parser.js
@@ -248,8 +248,12 @@ class Parser {
           }
           // Check that the "EI" sequence isn't part of the image data, since
           // that would cause the image to be truncated (fixes issue11124.pdf).
+          //
+          // Check more than the `followingBytes` to be able to find operators
+          // with multiple arguments, e.g. transform (cm) with decimal arguments
+          // (fixes issue19494.pdf).
           const tmpLexer = new Lexer(
-            new Stream(followingBytes.slice()),
+            new Stream(stream.peekBytes(5 * n)),
             knownCommands
           );
           // Reduce the number of (potential) warning messages.
diff --git a/test/pdfs/issue19494.pdf.link b/test/pdfs/issue19494.pdf.link
new file mode 100644
index 000000000..a60932082
--- /dev/null
+++ b/test/pdfs/issue19494.pdf.link
@@ -0,0 +1 @@
+https://github.com/user-attachments/files/18810079/VERAPDF-1335-InlineImage.pdf
diff --git a/test/test_manifest.json b/test/test_manifest.json
index f1b8f1d56..d4deda407 100644
--- a/test/test_manifest.json
+++ b/test/test_manifest.json
@@ -5617,6 +5617,15 @@
     "rounds": 1,
     "type": "eq"
   },
+  {
+    "id": "issue19494",
+    "file": "pdfs/issue19494.pdf",
+    "md5": "2ec2ccbe6aa7e622ef981ca5ca443d55",
+    "link": true,
+    "rounds": 1,
+    "type": "eq",
+    "lastPage": 1
+  },
   {
     "id": "issue11768",
     "file": "pdfs/issue11768_reduced.pdf",