新版IP库管理阶段性提交（未完成）

pkg/iplibrary/writer_file.go

@@ -0,0 +1,58 @@
+// Copyright 2022 Liuxiangchao iwind.liu@gmail.com. All rights reserved. Official site: https://goedge.cn .
+
+package iplibrary
+
+import (
+	"compress/gzip"
+	"os"
+)
+
+type FileWriter struct {
+	fp       *os.File
+	gzWriter *gzip.Writer
+
+	rawWriter *Writer
+}
+
+func NewFileWriter(path string, meta *Meta) (*FileWriter, error) {
+	fp, err := os.OpenFile(path, os.O_CREATE|os.O_TRUNC|os.O_WRONLY, 0666)
+	if err != nil {
+		return nil, err
+	}
+
+	gzWriter, err := gzip.NewWriterLevel(fp, gzip.BestCompression)
+	if err != nil {
+		return nil, err
+	}
+
+	var writer = &FileWriter{
+		fp:        fp,
+		gzWriter:  gzWriter,
+		rawWriter: NewWriter(gzWriter, meta),
+	}
+	return writer, nil
+}
+
+func (this *FileWriter) WriteMeta() error {
+	return this.rawWriter.WriteMeta()
+}
+
+func (this *FileWriter) Write(ipFrom string, ipTo string, countryId int64, provinceId int64, cityId int64, townId int64, providerId int64) error {
+	return this.rawWriter.Write(ipFrom, ipTo, countryId, provinceId, cityId, townId, providerId)
+}
+
+func (this *FileWriter) Sum() string {
+	return this.rawWriter.Sum()
+}
+
+func (this *FileWriter) Close() error {
+	err1 := this.gzWriter.Close()
+	err2 := this.fp.Close()
+	if err1 != nil {
+		return err1
+	}
+	if err2 != nil {
+		return err2
+	}
+	return nil
+}