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40 lines
651 B
Go
40 lines
651 B
Go
package gzip
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import (
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"compress/gzip"
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"io"
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)
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type Decompressor struct {
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r io.Reader
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gzr *gzip.Reader
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}
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// NewDecompressor returns an instantied Decompressor that reads from r and
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// decompresses the data using gzip.
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func NewDecompressor(r io.Reader) *Decompressor {
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return &Decompressor{
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r: r,
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}
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}
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// Read reads decompressed data.
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func (c *Decompressor) Read(p []byte) (int, error) {
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if c.gzr == nil {
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var err error
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c.gzr, err = gzip.NewReader(c.r)
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if err != nil {
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return 0, err
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}
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}
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n, err := c.gzr.Read(p)
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if err == io.EOF {
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if err := c.gzr.Close(); err != nil {
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return 0, err
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}
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c.gzr = nil
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}
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return n, err
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}
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