refactor: logparser v5 to pkgs

logparser/v5/filepipe.go

@@ -0,0 +1,39 @@
+// For more tutorials: https://blog.learngoprogramming.com
+//
+// Copyright © 2018 Inanc Gumus
+// Learn Go Programming Course
+// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
+//
+
+package main
+
+import (
+	"os"
+	"strings"
+
+	"github.com/inancgumus/learngo/logparser/v5/pipe"
+)
+
+// fromFile generates a default pipeline.
+// Detects the correct parser by the file extension.
+// Uses a TextReport and groups by domain.
+func fromFile(path string) (*pipe.Pipeline, error) {
+	f, err := os.Open(path)
+	if err != nil {
+		return nil, err
+	}
+
+	var src pipe.Iterator
+	switch {
+	case strings.HasSuffix(path, ".txt"):
+		src = pipe.NewTextLog(f)
+	case strings.HasSuffix(path, ".jsonl"):
+		src = pipe.NewJSONLog(f)
+	}
+
+	return pipe.New(
+		src,
+		pipe.NewTextReport(os.Stdout),
+		pipe.GroupBy(pipe.DomainGrouper),
+	), nil
+}