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- package lz4_test
- import (
- "fmt"
- "io"
- "os"
- "strings"
- "github.com/pierrec/lz4"
- )
- func Example() {
- // Compress and uncompress an input string.
- s := "hello world"
- r := strings.NewReader(s)
- // The pipe will uncompress the data from the writer.
- pr, pw := io.Pipe()
- zw := lz4.NewWriter(pw)
- zr := lz4.NewReader(pr)
- go func() {
- // Compress the input string.
- _, _ = io.Copy(zw, r)
- _ = zw.Close() // Make sure the writer is closed
- _ = pw.Close() // Terminate the pipe
- }()
- _, _ = io.Copy(os.Stdout, zr)
- // Output:
- // hello world
- }
- func ExampleCompressBlock() {
- s := "hello world"
- data := []byte(strings.Repeat(s, 100))
- buf := make([]byte, len(data))
- ht := make([]int, 64<<10) // buffer for the compression table
- n, err := lz4.CompressBlock(data, buf, ht)
- if err != nil {
- fmt.Println(err)
- }
- if n >= len(data) {
- fmt.Printf("`%s` is not compressible", s)
- }
- buf = buf[:n] // compressed data
- // Allocated a very large buffer for decompression.
- out := make([]byte, 10*len(data))
- n, err = lz4.UncompressBlock(buf, out)
- if err != nil {
- fmt.Println(err)
- }
- out = out[:n] // uncompressed data
- fmt.Println(string(out[:len(s)]))
- // Output:
- // hello world
- }
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