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goprompt.go
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goprompt.go
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/***********************************************************************************************************************
*
* MIT License
*
* Copyright (c) 2021 Nicolas JUHEL
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*
**********************************************************************************************************************/
package shell
import (
"fmt"
"io"
"os"
"strings"
libshl "github.com/c-bata/go-prompt"
liberr "github.com/nabbar/golib/errors"
shlcmd "github.com/nabbar/golib/shell/command"
)
func (s *shell) RunPrompt(out, err io.Writer, opt ...libshl.Option) {
var (
cmp = make([]libshl.Suggest, 0)
)
_ = s.Walk(func(name string, item shlcmd.Command) (shlcmd.Command, liberr.Error) {
cmp = append(cmp, libshl.Suggest{
Text: name,
Description: item.Describe(),
})
return nil, nil
})
p := libshl.New(
func(inputLine string) {
if out == nil {
out = os.Stdout
}
if err == nil {
err = os.Stderr
}
inputLine = strings.TrimSpace(inputLine)
if inputLine == "" {
return
} else if inputLine == "quit" || inputLine == "exit" {
_, _ = fmt.Fprintf(out, "Bye !\n")
os.Exit(0)
return
}
s.Run(out, err, strings.Fields(inputLine))
},
func(document libshl.Document) []libshl.Suggest {
return libshl.FilterHasPrefix(cmp, document.GetWordBeforeCursor(), true)
},
opt...,
)
p.Run()
}