pkg/tool/cli: support ask task
Closes #467
https://github.com/cuelang/cue/pull/467
GitOrigin-RevId: 5b68202c3748b256f627f6cb5d0cd239c8650fff
Change-Id: I42bab4558d32fde97c0a861c99cf7bcc2a935aa6
Reviewed-on: https://cue-review.googlesource.com/c/cue/+/7261
Reviewed-by: CUE cueckoo <cueckoo@gmail.com>
Reviewed-by: Marcel van Lohuizen <mpvl@golang.org>
diff --git a/pkg/tool/cli/cli.cue b/pkg/tool/cli/cli.cue
index 6f581f3..562ffa5 100644
--- a/pkg/tool/cli/cli.cue
+++ b/pkg/tool/cli/cli.cue
@@ -22,7 +22,6 @@
text: string
}
-// TODO:
// Ask prompts the current console with a message and waits for input.
//
// Example:
@@ -30,13 +29,13 @@
// prompt: "Are you okay?"
// repsonse: bool
// })
-// Ask: {
-// kind: "tool/cli.Ask"
+Ask: {
+ kind: "tool/cli.Ask"
-// // prompt sends this message to the output.
-// prompt: string
+ // prompt sends this message to the output.
+ prompt: string
-// // response holds the user's response. If it is a boolean expression it
-// // will interpret the answer using textual yes/ no.
-// response: string | bool
-// }
+ // response holds the user's response. If it is a boolean expression it
+ // will interpret the answer using textual yes/ no.
+ response: string | bool
+}
diff --git a/pkg/tool/cli/cli.go b/pkg/tool/cli/cli.go
index 8ba4878..fbd5c4d 100644
--- a/pkg/tool/cli/cli.go
+++ b/pkg/tool/cli/cli.go
@@ -19,6 +19,7 @@
import (
"fmt"
+ "strings"
"cuelang.org/go/cue"
"cuelang.org/go/internal/task"
@@ -26,6 +27,7 @@
func init() {
task.Register("tool/cli.Print", newPrintCmd)
+ task.Register("tool/cli.Ask", newAskCmd)
// For backwards compatibility.
task.Register("print", newPrintCmd)
@@ -45,3 +47,39 @@
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
+}
diff --git a/pkg/tool/cli/doc.go b/pkg/tool/cli/doc.go
index e65ebcf..c63be7e 100644
--- a/pkg/tool/cli/doc.go
+++ b/pkg/tool/cli/doc.go
@@ -12,7 +12,6 @@
// text: string
// }
//
-// // TODO:
// // Ask prompts the current console with a message and waits for input.
// //
// // Example:
@@ -20,15 +19,15 @@
// // prompt: "Are you okay?"
// // repsonse: bool
// // })
-// // Ask: {
-// // kind: "tool/cli.Ask"
+// Ask: {
+// kind: "tool/cli.Ask"
//
-// // // prompt sends this message to the output.
-// // prompt: string
+// // prompt sends this message to the output.
+// prompt: string
//
-// // // response holds the user's response. If it is a boolean expression it
-// // // will interpret the answer using textual yes/ no.
-// // response: string | bool
-// // }
+// // response holds the user's response. If it is a boolean expression it
+// // will interpret the answer using textual yes/ no.
+// response: string | bool
+// }
//
package cli
diff --git a/pkg/tool/cli/pkg.go b/pkg/tool/cli/pkg.go
index 1cd3d33..0a9e50f 100644
--- a/pkg/tool/cli/pkg.go
+++ b/pkg/tool/cli/pkg.go
@@ -23,5 +23,10 @@
$id: *"tool/cli.Print" | "print"
text: string
}
+ Ask: {
+ kind: "tool/cli.Ask"
+ prompt: string
+ response: string | bool
+ }
}`,
}
