[pkg/stanza] readerFactory and Reader use helper.Encoding directly

.chloggen/stanza-reader-encoding.yaml

@@ -0,0 +1,12 @@
+# One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix'
+change_type: enhancement
+
+# The name of the component, or a single word describing the area of concern, (e.g. filelogreceiver)
+component: pkg/stanza
+
+# A brief description of the change.  Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: "`readerFactory` and  `Reader` use  `helper.Encoding` directly, no longer depends on `helper.Splitter`"
+
+# One or more tracking issues related to the change
+issues: [14593]
+

pkg/stanza/fileconsumer/config.go

@@ -128,6 +128,7 @@ func (c Config) Build(logger *zap.SugaredLogger, emit EmitFunc) (*Manager, error
 			},
 			fromBeginning:  startAtBeginning,
 			splitterConfig: c.Splitter,
+			encodingConfig: c.Splitter.EncodingConfig,
 		},
 		finder:        c.Finder,
 		roller:        newRoller(),

pkg/stanza/fileconsumer/reader.go

@@ -35,6 +35,7 @@ type Reader struct {
 	*zap.SugaredLogger `json:"-"` // json tag excludes embedded fields from storage
 	*readerConfig
 	splitter *helper.Splitter
+	encoding helper.Encoding
 
 	Fingerprint    *Fingerprint
 	Offset         int64
@@ -78,7 +79,7 @@ func (r *Reader) ReadToEnd(ctx context.Context) {
 			break
 		}
 
-		token, err := r.splitter.Encoding.Decode(scanner.Bytes())
+		token, err := r.encoding.Decode(scanner.Bytes())
 		if err != nil {
 			r.Errorw("decode: %w", zap.Error(err))
 		} else {

pkg/stanza/fileconsumer/reader_factory.go

@@ -27,6 +27,7 @@ type readerFactory struct {
 	readerConfig   *readerConfig
 	fromBeginning  bool
 	splitterConfig helper.SplitterConfig
+	encodingConfig helper.EncodingConfig
 }
 
 func (f *readerFactory) newReader(file *os.File, fp *Fingerprint) (*Reader, error) {
@@ -101,6 +102,12 @@ func (b *readerBuilder) build() (r *Reader, err error) {
 		}
 	}
 
+	enc, err := b.encodingConfig.Build()
+	if err != nil {
+		return
+	}
+	r.encoding = enc
+
 	if b.file != nil {
 		r.file = b.file
 		r.SugaredLogger = b.SugaredLogger.With("path", b.file.Name())