diff options
Diffstat (limited to 'vendor/github.com/klauspost/compress/gzip/gzip.go')
| -rw-r--r-- | vendor/github.com/klauspost/compress/gzip/gzip.go | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/vendor/github.com/klauspost/compress/gzip/gzip.go b/vendor/github.com/klauspost/compress/gzip/gzip.go index 26203851b..5bc720593 100644 --- a/vendor/github.com/klauspost/compress/gzip/gzip.go +++ b/vendor/github.com/klauspost/compress/gzip/gzip.go @@ -74,6 +74,27 @@ func NewWriterLevel(w io.Writer, level int) (*Writer, error) { return z, nil } +// MinCustomWindowSize is the minimum window size that can be sent to NewWriterWindow. +const MinCustomWindowSize = flate.MinCustomWindowSize + +// MaxCustomWindowSize is the maximum custom window that can be sent to NewWriterWindow. +const MaxCustomWindowSize = flate.MaxCustomWindowSize + +// NewWriterWindow returns a new Writer compressing data with a custom window size. +// windowSize must be from MinCustomWindowSize to MaxCustomWindowSize. +func NewWriterWindow(w io.Writer, windowSize int) (*Writer, error) { + if windowSize < MinCustomWindowSize { + return nil, errors.New("gzip: requested window size less than MinWindowSize") + } + if windowSize > MaxCustomWindowSize { + return nil, errors.New("gzip: requested window size bigger than MaxCustomWindowSize") + } + + z := new(Writer) + z.init(w, -windowSize) + return z, nil +} + func (z *Writer) init(w io.Writer, level int) { compressor := z.compressor if level != StatelessCompression { |