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package util | |
import ( | |
"bytes" | |
"compress/gzip" | |
"io" | |
) | |
func Gunzip(src []byte) (dst []byte, err error) { | |
if src == nil { | |
return nil, nil | |
} | |
r, err := gzip.NewReader(bytes.NewReader(src)) | |
if err != nil { | |
return nil, err | |
} | |
defer r.Close() | |
buf := new(bytes.Buffer) | |
_, err = io.Copy(buf, r) | |
if err != nil { | |
return nil, err | |
} | |
return buf.Bytes(), nil | |
} | |
func Gzip(src []byte) (dst []byte, err error) { | |
if src == nil { | |
return nil, nil | |
} | |
buf := new(bytes.Buffer) | |
w := gzip.NewWriter(buf) | |
if _, err := w.Write(src); err != nil { | |
return nil, err | |
} | |
if err = w.Close(); err != nil { | |
return nil, err | |
} | |
return buf.Bytes(), nil | |
} |
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package util | |
import ( | |
"io/ioutil" | |
"labix.org/v1/pipe" | |
"os" | |
"testing" | |
) | |
func Test_GzipNil(t *testing.T) { | |
buf, err := Gzip(nil) | |
if err != nil { | |
t.Fatalf("Gzip: %v", err) | |
} | |
if buf != nil { | |
t.Fatalf("Expected 'nil', got %v", buf) | |
} | |
} | |
func Test_Gzip(t *testing.T) { | |
s := "This is a test" | |
buf, err := Gzip([]byte(s)) | |
if err != nil { | |
t.Fatalf("Gzip: %s: %v", s, err) | |
} | |
f, err := ioutil.TempFile("/tmp", "test") | |
if err != nil { | |
t.Fatalf("TempFile: %v", err) | |
} | |
defer func() { os.Remove(f.Name()) }() | |
err = ioutil.WriteFile(f.Name(), buf, 0644) | |
if err != nil { | |
t.Fatalf("WriteFile: %v", err) | |
} | |
p := pipe.Line(pipe.Exec("gzip", "-dc", f.Name())) | |
output, err := pipe.CombinedOutput(p) | |
if err != nil { | |
t.Fatalf("pipe.Exec: %v", err) | |
} | |
if string(output) != s { | |
t.Fatalf("Expected '%s' but got '%s'", s, string(output)) | |
} | |
} | |
func Test_GunzipNil(t *testing.T) { | |
buf, err := Gunzip(nil) | |
if err != nil { | |
t.Fatalf("Gunzip: %v", err) | |
} | |
if buf != nil { | |
t.Fatalf("Expected 'nil', got %v", buf) | |
} | |
} | |
func Test_Gunzip(t *testing.T) { | |
s := "This is a test" | |
f, err := ioutil.TempFile("/tmp", "test") | |
if err != nil { | |
t.Fatalf("TempFile: %v", err) | |
} | |
defer func() { os.Remove(f.Name()) }() | |
p := pipe.Line( | |
pipe.Echo(s), | |
pipe.Exec("gzip", "-c"), | |
pipe.WriteFile(f.Name(), 0644)) | |
err = pipe.Run(p) | |
if err != nil { | |
t.Fatalf("pipe.Run: %v", err) | |
} | |
buf, err := ioutil.ReadFile(f.Name()) | |
if err != nil { | |
t.Fatalf("ReadFile: %v", err) | |
} | |
output, err := Gunzip(buf) | |
if err != nil { | |
t.Fatalf("Gunzip: %v", err) | |
} | |
if string(output) != s { | |
t.Fatalf("Expected '%s' but got '%s'", s, string(output)) | |
} | |
} |
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