support stream length of 1030

Adam Fausett · Adam Fausett · commit 978de7d966de · 2021-06-28T17:38:11.000-05:00
diff --git a/PdfSharpCore/Pdf.IO/Parser.cs b/PdfSharpCore/Pdf.IO/Parser.cs
@@ -1012,7 +1012,7 @@ internal PdfTrailer ReadTrailer(PdfReadAccuracy accuracy)
             // Implementation note 18 Appendix  H:
             // Acrobat viewers require only that the %%EOF marker appear somewhere within the last 1024 bytes of the file.
             int idx;
-            if (length < 1030)
+            if (length <= 1030)
             {
                 // Reading the final 30 bytes should work for all files. But often it does not.
                 string trail = _lexer.ReadRawString(length - 31, 30); //lexer.Pdf.Substring(length - 30);

Original file line number	Diff line number	Diff line change
`@@ -1012,7 +1012,7 @@ internal PdfTrailer ReadTrailer(PdfReadAccuracy accuracy)`
`1012`	`1012`	`// Implementation note 18 Appendix H:`
`1013`	`1013`	`// Acrobat viewers require only that the %%EOF marker appear somewhere within the last 1024 bytes of the file.`
`1014`	`1014`	`int idx;`
`1015`		`- if (length < 1030)`
	`1015`	`+ if (length <= 1030)`
`1016`	`1016`	`{`
`1017`	`1017`	`// Reading the final 30 bytes should work for all files. But often it does not.`
`1018`	`1018`	`string trail = _lexer.ReadRawString(length - 31, 30); //lexer.Pdf.Substring(length - 30);`