ProxyReader needs to implement io.Seeker for unpacking zip archives.

mitchell-as · mitchell-as · commit 4c6c55ccf9df · 2025-11-20T17:31:36.000-05:00
diff --git a/internal/proxyreader/proxyreader.go b/internal/proxyreader/proxyreader.go
@@ -52,3 +52,11 @@ func (pr *ProxyReader) ReadAt(p []byte, offset int64) (int, error) {
 	}
 	return n, err
 }
+
+func (pr *ProxyReader) Seek(offset int64, whence int) (int64, error) {
+	seekAt, ok := pr.r.(io.Seeker)
+	if !ok {
+		return 0, errs.New("This proxied reader needs to implement io.Seeker")
+	}
+	return seekAt.Seek(offset, whence)
+}

Original file line number	Diff line number	Diff line change
`@@ -52,3 +52,11 @@ func (pr *ProxyReader) ReadAt(p []byte, offset int64) (int, error) {`
`52`	`52`	`}`
`53`	`53`	`return n, err`
`54`	`54`	`}`
	`55`	`+`
	`56`	`+func (pr *ProxyReader) Seek(offset int64, whence int) (int64, error) {`
	`57`	`+ seekAt, ok := pr.r.(io.Seeker)`
	`58`	`+ if !ok {`
	`59`	`+ return 0, errs.New("This proxied reader needs to implement io.Seeker")`
	`60`	`+ }`
	`61`	`+ return seekAt.Seek(offset, whence)`
	`62`	`+}`