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feat: add stdin request support #760

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feat: add stdin request support #760

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18 changes: 16 additions & 2 deletions cmd/lk/proto.go
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Original file line number Diff line number Diff line change
Expand Up @@ -18,6 +18,7 @@ import (
"context"
"errors"
"fmt"
"io"
"os"
"reflect"

Expand Down Expand Up @@ -69,7 +70,9 @@ func ReadRequestFileOrLiteral[T any, P protoType[T]](pathOrLiteral string) (P, e
var err error

// This allows us to read JSON from either CLI arg or FS
if _, err = os.Stat(pathOrLiteral); err == nil {
if pathOrLiteral == "-" {
reqBytes, err = io.ReadAll(os.Stdin)
} else if _, err = os.Stat(pathOrLiteral); err == nil {
reqBytes, err = os.ReadFile(pathOrLiteral)
} else {
reqBytes = []byte(pathOrLiteral)
Expand All @@ -96,7 +99,7 @@ func RequestFlag[T any, P protoType[T]]() *cli.StringFlag {

func RequestDesc[T any, _ protoType[T]]() string {
typ := reflect.TypeFor[T]().Name()
return typ + " as JSON file"
return typ + " as JSON file (or - for stdin)"
}

func createAndPrintFile[T any, P protoTypeValidator[T], R any](
Expand Down Expand Up @@ -175,6 +178,17 @@ func createAndPrintReqs[T any, P protoTypeValidator[T], R any](
var req P = new(T)
return createAndPrintReq(ctx, cmd, req, fill, create, print)
}
if args.Len() > 1 {
stdinCount := 0
for _, file := range args.Slice() {
if file == "-" {
stdinCount++
if stdinCount > 1 {
return errors.New("stdin can only be used once")
}
}
}
}
for _, file := range args.Slice() {
if err := createAndPrintFile(ctx, cmd, file, fill, create, print); err != nil {
return err
Expand Down