From a27c6bbf900dae9f15fe05aa6e5e9aed8541ada4 Mon Sep 17 00:00:00 2001
From: Peter Williams <peter.williams@papercut.com>
Date: Mon, 1 Oct 2018 16:47:09 +1000
Subject: [PATCH] Hack to suppress EOF errors when parsing PDF fragments in
 font_test.go

---
 pdf/core/parser.go | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/pdf/core/parser.go b/pdf/core/parser.go
index 20d7d43d..6a194c49 100644
--- a/pdf/core/parser.go
+++ b/pdf/core/parser.go
@@ -52,6 +52,9 @@ type PdfParser struct {
 	// the length reference (if not object) prior to reading the actual stream.  This has risks of endless looping.
 	// Tracking is necessary to avoid recursive loops.
 	streamLengthReferenceLookupInProgress map[int64]bool
+
+	// Hack to allow parsing of PDF fragments without reporting an EOF error.
+	suppressEOF bool
 }
 
 // PdfVersion returns version of the PDF file.
@@ -1322,7 +1325,9 @@ func (parser *PdfParser) ParseIndirectObject() (PdfObject, error) {
 	common.Log.Trace("-Read indirect obj")
 	bb, err := parser.reader.Peek(20)
 	if err != nil {
-		common.Log.Debug("ERROR: Fail to read indirect obj")
+		if !(parser.suppressEOF && err == io.EOF) {
+			common.Log.Debug("ERROR: Fail to read indirect obj. err=%v", err)
+		}
 		return &indirect, err
 	}
 	common.Log.Trace("(indirect obj peek \"%s\"", string(bb))
@@ -1493,7 +1498,7 @@ func (parser *PdfParser) ParseIndirectObject() (PdfObject, error) {
 // For testing purposes.
 // TODO: Unexport (v3) or move to test files, if needed by external test cases.
 func NewParserFromString(txt string) *PdfParser {
-	parser := PdfParser{}
+	parser := PdfParser{suppressEOF: true}
 	buf := []byte(txt)
 
 	bufReader := bytes.NewReader(buf)