Replicate deprecated pkg/stanza/decode.LookupEncoding

internal/receiver/scriptedinputsreceiver/config.go

@@ -23,7 +23,6 @@ import (
 	"sort"
 	"time"
 
-	"github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/decode"
 	"github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/operator"
 	"github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/operator/helper"
 	"github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/split"
@@ -106,7 +105,7 @@ func (c *Config) Build(set component.TelemetrySettings) (operator.Operator, erro
 		return nil, err
 	}
 
-	enc, err := decode.LookupEncoding(c.Encoding)
+	enc, err := lookupEncoding(c.Encoding)
 	if err != nil {
 		return nil, err
 	}

internal/receiver/scriptedinputsreceiver/encoding.go

@@ -0,0 +1,49 @@
+// Copyright Splunk, Inc.
+//
+// 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 scriptedinputsreceiver
+
+import (
+	"fmt"
+	"strings"
+
+	"golang.org/x/text/encoding"
+	"golang.org/x/text/encoding/ianaindex"
+	"golang.org/x/text/encoding/unicode"
+)
+
+var encodingOverrides = map[string]encoding.Encoding{
+	"utf-16":   unicode.UTF16(unicode.LittleEndian, unicode.IgnoreBOM),
+	"utf16":    unicode.UTF16(unicode.LittleEndian, unicode.IgnoreBOM),
+	"utf-8":    unicode.UTF8,
+	"utf8":     unicode.UTF8,
+	"ascii":    unicode.UTF8,
+	"us-ascii": unicode.UTF8,
+	"nop":      encoding.Nop,
+	"":         unicode.UTF8,
+}
+
+func lookupEncoding(enc string) (encoding.Encoding, error) {
+	if e, ok := encodingOverrides[strings.ToLower(enc)]; ok {
+		return e, nil
+	}
+	e, err := ianaindex.IANA.Encoding(enc)
+	if err != nil {
+		return nil, fmt.Errorf("unsupported encoding '%s'", enc)
+	}
+	if e == nil {
+		return nil, fmt.Errorf("no charmap defined for encoding '%s'", enc)
+	}
+	return e, nil
+}