mirror of
https://github.com/VictoriaMetrics/VictoriaMetrics.git
synced 2024-11-27 02:46:47 +01:00
48 lines
1.5 KiB
Markdown
48 lines
1.5 KiB
Markdown
|
readline
|
||
|
|
========
|
||
|
|
|
||
|
|
[](https://godoc.org/github.com/ergochat/readline)
|
||
|
|
|
||
|
|
This is a pure Go implementation of functionality comparable to [GNU Readline](https://en.wikipedia.org/wiki/GNU_Readline), i.e. line editing and command history for simple TUI programs.
|
||
|
|
|
||
|
|
It is a fork of [chzyer/readline](https://github.com/chzyer/readline).
|
||
|
|
|
||
|
|
* Relative to the upstream repository, it is actively maintained and has numerous bug fixes
|
||
|
|
- See our [changelog](docs/CHANGELOG.md) for details on fixes and improvements
|
||
|
|
- See our [migration guide](docs/MIGRATING.md) for advice on how to migrate from upstream
|
||
|
|
* Relative to [x/term](https://pkg.go.dev/golang.org/x/term), it has more features (e.g. tab-completion)
|
||
|
|
* In use by multiple projects: [gopass](https://github.com/gopasspw/gopass), [fq](https://github.com/wader/fq), and [ircdog](https://github.com/ergochat/ircdog)
|
||
|
|
|
||
|
|
|
||
|
|
```go
|
||
|
|
package main
|
||
|
|
|
||
|
|
import (
|
||
|
|
"fmt"
|
||
|
|
"log"
|
||
|
|
|
||
|
|
"github.com/ergochat/readline"
|
||
|
|
)
|
||
|
|
|
||
|
|
func main() {
|
||
|
|
// see readline.NewFromConfig for advanced options:
|
||
|
|
rl, err := readline.New("> ")
|
||
|
|
if err != nil {
|
||
|
|
log.Fatal(err)
|
||
|
|
}
|
||
|
|
defer rl.Close()
|
||
|
|
log.SetOutput(rl.Stderr()) // redraw the prompt correctly after log output
|
||
|
|
|
||
|
|
for {
|
||
|
|
line, err := rl.ReadLine()
|
||
|
|
// `err` is either nil, io.EOF, readline.ErrInterrupt, or an unexpected
|
||
|
|
// condition in stdin:
|
||
|
|
if err != nil {
|
||
|
|
return
|
||
|
|
}
|
||
|
|
// `line` is returned without the terminating \n or CRLF:
|
||
|
|
fmt.Fprintf(rl, "you wrote: %s\n", line)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
```
|