feat: initial goget release — modern IPv6-first download utility

internal/compression/bzip2.go

@@ -0,0 +1,35 @@
+//go:build linux || freebsd
+// +build linux freebsd
+
+package compression
+
+import (
+	"compress/bzip2"
+	"fmt"
+	"io"
+)
+
+type bzip2Decompressor struct{ *BaseDecompressor }
+
+func NewBzip2Decompressor() *bzip2Decompressor {
+	return &bzip2Decompressor{NewBaseDecompressor("bzip2", []string{"bzip2"}, []string{".bz2", ".tbz", ".tbz2"})}
+}
+
+// Reader returns a bzip2 decompression reader wrapped in a NopCloser.
+// compress/bzip2.NewReader returns a plain io.Reader (no Close), so we
+// wrap it to satisfy the io.ReadCloser contract of the Decompressor
+// interface — the bzip2 reader has no internal state that needs
+// releasing.
+func (b *bzip2Decompressor) Reader(r io.Reader) (io.ReadCloser, error) {
+	return io.NopCloser(bzip2.NewReader(r)), nil
+}
+
+type bzip2Compressor struct{ name string }
+
+func NewBzip2Compressor() *bzip2Compressor { return &bzip2Compressor{name: "bzip2"} }
+func (b *bzip2Compressor) Name() string    { return b.name }
+func (b *bzip2Compressor) Writer(w io.Writer) (io.WriteCloser, error) {
+	return nil, fmt.Errorf("bzip2 compression not supported in stdlib")
+}
+
+func init() { Register(NewBzip2Decompressor()) }