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cli.go
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cli.go
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// Copyright 2019 CUE Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package cli
//go:generate go run gen.go
//go:generate gofmt -s -w .
import (
"fmt"
"strings"
"cuelang.org/go/cue"
"github.com/anarcher/cue-commands/pkg/task"
)
func init() {
task.Register("tool/cli.Print", newPrintCmd)
task.Register("tool/cli.Ask", newAskCmd)
// For backwards compatibility.
task.Register("print", newPrintCmd)
}
type printCmd struct{}
func newPrintCmd(v cue.Value) (task.Runner, error) {
return &printCmd{}, nil
}
func (c *printCmd) Run(ctx *task.Context) (res interface{}, err error) {
str := ctx.String("text")
if ctx.Err != nil {
return nil, ctx.Err
}
fmt.Fprintln(ctx.Stdout, str)
return nil, nil
}
type askCmd struct{}
func newAskCmd(v cue.Value) (task.Runner, error) {
return &askCmd{}, nil
}
func (c *askCmd) Run(ctx *task.Context) (res interface{}, err error) {
str := ctx.String("prompt")
if ctx.Err != nil {
return nil, ctx.Err
}
if str != "" {
fmt.Fprint(ctx.Stdout, str+" ")
}
var response string
if _, err := fmt.Scan(&response); err != nil {
return nil, err
}
update := map[string]interface{}{"response": response}
switch v := ctx.Lookup("response"); v.IncompleteKind() {
case cue.BoolKind:
switch strings.ToLower(response) {
case "yes":
update["response"] = true
default:
update["response"] = false
}
case cue.StringKind:
// already set above
}
return update, nil
}