Fix read-after-eof panic (#6)

srmish-jfrog · web-flow · commit 1b22259a6c44 · 2023-12-05T13:53:56.000+09:00
Fixed a panic that was caused when Read() was called after a previous Read() returned io.EOF
diff --git a/xfs/xfs.go b/xfs/xfs.go
@@ -458,6 +458,9 @@ func (f *File) Stat() (fs.FileInfo, error) {
 }
 
 func (f *File) Read(buf []byte) (int, error) {
+	if f.buffer == nil {
+		return 0, io.EOF
+	}
 	if f.buffer.Len() == 0 {
 		f.currentBlock++
 		if f.currentBlock*f.blockSize >= f.Size() {

Original file line number	Diff line number	Diff line change
`@@ -458,6 +458,9 @@ func (f *File) Stat() (fs.FileInfo, error) {`
`458`	`458`	`}`
`459`	`459`
`460`	`460`	`func (f *File) Read(buf []byte) (int, error) {`
	`461`	`+ if f.buffer == nil {`
	`462`	`+ return 0, io.EOF`
	`463`	`+ }`
`461`	`464`	`if f.buffer.Len() == 0 {`
`462`	`465`	`f.currentBlock++`
`463`	`466`	`if f.currentBlock*f.blockSize >= f.Size() {`