From 47a0a62eee77202ce139fb58bdca203811ca45a5 Mon Sep 17 00:00:00 2001
From: romain v <rvergnory@lucca.fr>
Date: Tue, 17 Aug 2021 16:14:59 +0200
Subject: [PATCH] \r only in token scanner

An edge case was lost with this commit https://github.com/UglyToad/PdfPig/commit/31ca3640d2c161e3635187bc1bd94158214a6452?branch=31ca3640d2c161e3635187bc1bd94158214a6452&diff=split

when scanner is only followed by \r (without \n)
---
 .../Tokenization/Scanner/PdfTokenScanner.cs      | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/src/UglyToad.PdfPig/Tokenization/Scanner/PdfTokenScanner.cs b/src/UglyToad.PdfPig/Tokenization/Scanner/PdfTokenScanner.cs
index fb903e3a..2d5a570c 100644
--- a/src/UglyToad.PdfPig/Tokenization/Scanner/PdfTokenScanner.cs
+++ b/src/UglyToad.PdfPig/Tokenization/Scanner/PdfTokenScanner.cs
@@ -262,6 +262,7 @@
             }
 
             // From the specification: The stream operator should be followed by \r\n or \n, not just \r.
+            // While the specification demands a \n we have seen files with \r only in the wild.
             // While the specification demands a \n we have seen files with `garbage` before the actual data
             do
             {
@@ -269,6 +270,21 @@
                 {
                     return false;
                 }
+
+                if ((char)inputBytes.CurrentByte == '\r')
+                {
+                    if (!inputBytes.MoveNext())
+                    {
+                        return false;
+                    }
+
+                    if ((char)inputBytes.CurrentByte != '\n')
+                    {
+                        inputBytes.Seek(inputBytes.CurrentOffset - 1);
+                    }
+                    break;
+                }
+
             } while ((char)inputBytes.CurrentByte != '\n');
 
             // Store where we started reading the first byte of data.