viper-app/pkg/file/file.go

package file

import (
	"bufio"
	"go.uber.org/zap"
	"os"
)

func ScanFile(path string, handle func(data string) (err error)) (err error) {
	file, err := os.Open(path)
	if err != nil {
		return err
	}
	defer func(file *os.File) {
		err = file.Close()
		if err != nil {
			zap.S().Error(err)
		}
	}(file)

	input := bufio.NewScanner(file)
	var lineText string
	for input.Scan() {
		lineText = input.Text()
		err := handle(lineText)
		if err != nil && len(lineText) > 0 {
			zap.L().Error("file data handle error", zap.Error(err), zap.String("path", path), zap.String("data", lineText))
			continue
		}
	}

	return nil
}

func Size(path string) (int64, error) {
	info, err := os.Stat(path)
	if err != nil {
		return 0, err
	}
	return info.Size(), err
}