https://github.com/nikolaydubina/read-seek-peeker

Go Reader that can Seek() and Peek()
https://github.com/nikolaydubina/read-seek-peeker

bufio golang io reader

Last synced: 2 months ago
JSON representation

Go Reader that can Seek() and Peek()

• Host: GitHub
• URL: https://github.com/nikolaydubina/read-seek-peeker
• Owner: nikolaydubina
• License: mit
• Created: 2024-02-22T04:28:31.000Z (11 months ago)
• Default Branch: master
• Last Pushed: 2024-08-22T09:13:38.000Z (4 months ago)
• Last Synced: 2024-10-09T08:22:51.899Z (3 months ago)
• Topics: bufio, golang, io, reader
• Language: Go
• Homepage:
• Size: 26.4 KB
• Stars: 2
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE
  • Codeowners: .github/CODEOWNERS
  • Security: SECURITY.md

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```go

type ReadSeekPeeker interface {

	Read(p []byte) (n int, err error)

	Seek(offset int64, whence int) (int64, error)

	Peek(n int) ([]byte, error)

}

```

```go

s := "hello beautiful wonderful world!"

r := readseekpeeker.NewBufferedReadSeekPeeker(strings.NewReader(s), 5)

b := make([]byte, 5)

r.Read(b)

peek, _ := r.Peek(11)      // !

r.Seek(21, io.SeekCurrent) // !!

rest, _ := io.ReadAll(r)

fmt.Println(string(b), string(peek), string(rest))

// Output: hello  beautiful  world!

``` 

As of `2024-02-22`, standard go packages allow either:  

A) `Seek()` by [io.ReadSeeker](https://pkg.go.dev/io#ReadSeeker)  

B) `Peek()` by [bufio.Reader](https://pkg.go.dev/bufio#Reader.Peek)  

..but not both! This package adds that.