From 9a3b599bd1d5d0657f9ed3e8776dbd4ea10ad2a3 Mon Sep 17 00:00:00 2001
From: jmeaster30 <jmeasterday@comcast.net>
Date: Tue, 28 Mar 2023 22:20:48 -0400
Subject: [PATCH] Fixed issue with processing files that are less than
 4096bytes

---
 libvore/bytecode.go      |  2 +-
 libvore/vbufferedfile.go | 12 ++++++++++--
 2 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/libvore/bytecode.go b/libvore/bytecode.go
index bf9818a..6f3ee06 100644
--- a/libvore/bytecode.go
+++ b/libvore/bytecode.go
@@ -33,7 +33,7 @@ func findMatches(insts []SearchInstruction, all bool, skip int, take int, last i
 		for currentState.status == INPROCESS {
 			inst := insts[currentState.programCounter]
 			currentState = inst.execute(currentState)
-			//fmt.Printf("PC: %d INST: %+v MATCH: '%s'\n", currentState.programCounter, inst, currentState.currentMatch)
+			//fmt.Printf("PC: %d INST: %+v STATE: %+v\n", currentState.programCounter, inst, currentState)
 			if currentState.status == INPROCESS && currentState.programCounter >= len(insts) {
 				currentState.SUCCESS()
 			}
diff --git a/libvore/vbufferedfile.go b/libvore/vbufferedfile.go
index 96165a5..d28bac2 100644
--- a/libvore/vbufferedfile.go
+++ b/libvore/vbufferedfile.go
@@ -94,12 +94,20 @@ func (v *VBufferedFile) Seek(offset int64, whence int) (int64, error) {
 			newStart = 0
 		}
 
-		if newStart >= v.fileSize-4096 {
+		fileBound := v.fileSize - 4096
+		if fileBound < 0 {
+			fileBound = v.fileSize
+		}
+		if newStart >= fileBound {
 			newStart = v.fileSize - 4096
+			if newStart < 0 {
+				newStart = 0
+			}
 		}
 
 		bytesRead, err := v.file.ReadAt(v.buffer, newStart)
-		if err != nil {
+		// it is actually expected to have an EOF error here when we are working with a file that is less than 4096 bytes
+		if err != nil && err != io.EOF {
 			return v.currentOffset, err
 		}
 		v.minOffset = newStart