refactor

pkg/utils/io.go

@@ -0,0 +1,25 @@
+package utils
+
+import (
+	"bufio"
+	"os"
+)
+
+func ForEachLineInFile(path string, f func(string, int)) error {
+	file, err := os.Open(path)
+	if err != nil {
+		return err
+	}
+	defer file.Close()
+
+	reader := bufio.NewReader(file)
+	for i := 0; true; i++ {
+		line, err := reader.ReadString('\n')
+		if err != nil {
+			break
+		}
+		f(line, i)
+	}
+
+	return nil
+}