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37 lines
495 B
Go
37 lines
495 B
Go
package fs
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import "io"
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// Sizer interface can decorate a Reader
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type Sizer interface {
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// Size returns the size of the object
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Size() int64
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}
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type ReadSizer interface {
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io.Reader
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Sizer
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}
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type readSizer struct {
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r io.Reader
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size int64
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}
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func NewReadSizer(r io.Reader, size int64) ReadSizer {
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rs := &readSizer{
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r: r,
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size: size,
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}
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return rs
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}
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func (rs *readSizer) Read(p []byte) (int, error) {
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return rs.r.Read(p)
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}
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func (rs *readSizer) Size() int64 {
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return rs.size
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}
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