分红列表导出

@@ -3,6 +3,7 @@ module gitlab.fjmaimaimai.com/mmm-go/partnermg
 go 1.14
 go 1.14
 
 
 require (
 require (
+	github.com/360EntSecGroup-Skylar/excelize/v2 v2.3.1
 	github.com/GeeTeam/gt3-golang-sdk v0.0.0-20200116043922-446ca8a507d2
 	github.com/GeeTeam/gt3-golang-sdk v0.0.0-20200116043922-446ca8a507d2
 	github.com/Shopify/sarama v1.23.1
 	github.com/Shopify/sarama v1.23.1
 	github.com/ajg/form v1.5.1 // indirect
 	github.com/ajg/form v1.5.1 // indirect

@@ -4,8 +4,9 @@ type ListOrderBonusQuery struct {
 	// 查询偏离量
 	// 查询偏离量
 	Offset int `json:"offset" `
 	Offset int `json:"offset" `
 	// 查询限制
 	// 查询限制
-	Limit     int   `json:"limit"`
-	CompanyId int64 `json:"companyId"`
+	Limit           int   `json:"limit"`
+	CompanyId       int64 `json:"companyId"`
+	PartnerCategory int   `json:"partner_category"`
 	//订单类型
 	//订单类型
 	OrderType     int    `json:"orderType"`
 	OrderType     int    `json:"orderType"`
 	PartnerOrCode string `json:"partner_or_code"`
 	PartnerOrCode string `json:"partner_or_code"`

@@ -1178,3 +1178,81 @@ func (service OrderInfoService) UpdateOrderRemarkBonus(orderId int64, adminId in
 	}
 	}
 	return nil
 	return nil
 }
 }
+
+func (service OrderInfoService) ListOrderBonusForExcel(listOrderQuery query.ListOrderBonusQuery) ([]map[string]string, [][2]string, error) {
+	transactionContext, err := factory.CreateTransactionContext(nil)
+	if err != nil {
+		return nil, nil, lib.ThrowError(lib.TRANSACTION_ERROR, err.Error())
+	}
+	if err = transactionContext.StartTransaction(); err != nil {
+		return nil, nil, lib.ThrowError(lib.TRANSACTION_ERROR, err.Error())
+	}
+	defer func() {
+		transactionContext.RollbackTransaction()
+	}()
+	var (
+		orderBaseDao *dao.OrderBaseDao
+	)
+
+	if orderBaseDao, err = factory.CreateOrderBaseDao(map[string]interface{}{
+		"transactionContext": transactionContext,
+	}); err != nil {
+		return nil, nil, lib.ThrowError(lib.TRANSACTION_ERROR, err.Error())
+	}
+	result, err := orderBaseDao.OrderBonusListForExcel(
+		listOrderQuery.CompanyId,
+		listOrderQuery.OrderType,
+		listOrderQuery.PartnerOrCode,
+		listOrderQuery.PartnerCategory,
+	)
+	if err != nil {
+		return nil, nil, lib.ThrowError(lib.INTERNAL_SERVER_ERROR, err.Error())
+	}
+
+	err = transactionContext.CommitTransaction()
+	if err != nil {
+		return nil, nil, lib.ThrowError(lib.INTERNAL_SERVER_ERROR, err.Error())
+	}
+	var resultMaps []map[string]string
+	for i := range result {
+		m := map[string]string{
+			"num":                   fmt.Sprint(i + 1),
+			"order_type":            domain.GetOrderBaseTypeName(result[i].OrderType),
+			"order_code":            result[i].OrderCode,
+			"delivery_code":         result[i].DeliveryCode,
+			"partner_name":          result[i].PartnerName,
+			"bonus_status":          "",
+			"update_time":           result[i].UpdateTime,
+			"partner_bonus":         fmt.Sprint(result[i].PartnerBonus),
+			"partner_bonus_has":     fmt.Sprint(result[i].PartnerBonusHas),
+			"partner_bonus_not":     fmt.Sprint(result[i].PartnerBonusNot),
+			"partner_bonus_expense": fmt.Sprint(result[i].PartnerBonusExpense),
+		}
+		if result[i].HasBonusPercent == 0 {
+			m["partner_bonus"] = "-"
+			m["partner_bonus_has"] = "-"
+			m["partner_bonus_not"] = "-"
+			m["partner_bonus_expense"] = "-"
+		}
+		switch result[i].BonusStatus {
+		case domain.OrderGoodWaitPay:
+			m["bonus_status"] = "等待支付分红"
+		case domain.OrderGoodHasPay:
+			m["bonus_status"] = "已支付分红"
+		}
+		resultMaps = append(resultMaps, m)
+	}
+	column := [][2]string{
+		[2]string{"num", "序号"},
+		[2]string{"order_type", "订单类型"},
+		[2]string{"order_code", "订单号"},
+		[2]string{"partner_name", "合伙人"},
+		[2]string{"bonus_status", "订单状态"},
+		[2]string{"update_time", "最后操作时间"},
+		[2]string{"partner_bonus", "应收分红"},
+		[2]string{"partner_bonus_has", "已收分红"},
+		[2]string{"partner_bonus_not", "未收分红"},
+		[2]string{"partner_bonus_expense", "分红支出"},
+	}
+	return resultMaps, column, nil
+}

 package service
 package service
 
 
 import (
 import (
-	"errors"
-
 	"gitlab.fjmaimaimai.com/mmm-go/partnermg/pkg/application/unifiedUserCenter/command"
 	"gitlab.fjmaimaimai.com/mmm-go/partnermg/pkg/application/unifiedUserCenter/command"
 )
 )
 
 
@@ -30,7 +28,7 @@ func NewSyncAction(cmd command.SyncCallbackCommand) error {
 		ok     bool
 		ok     bool
 	)
 	)
 	if action, ok = actionMap[cmd.Module]; !ok {
 	if action, ok = actionMap[cmd.Module]; !ok {
-		return errors.New("module cannot found")
+		return nil
 	}
 	}
 	return action.DoAction(cmd.Action, cmd.Data)
 	return action.DoAction(cmd.Action, cmd.Data)
 }
 }

@@ -14,7 +14,7 @@ var KafkaCfg KafkaConfig
 
 
 func init() {
 func init() {
 	KafkaCfg = KafkaConfig{
 	KafkaCfg = KafkaConfig{
-		Servers:    []string{"192.168.190.136:9092"},
+		Servers:    []string{""},
 		ConsumerId: "partnermg_local",
 		ConsumerId: "partnermg_local",
 	}
 	}
 	if os.Getenv("KAFKA_HOST") != "" {
 	if os.Getenv("KAFKA_HOST") != "" {

@@ -114,6 +114,8 @@ type OrderBase struct {
 	DataFrom OrderDataFrom `json:"dataFrom"`
 	DataFrom OrderDataFrom `json:"dataFrom"`
 	//备注
 	//备注
 	Remark OrderBaseRemark `json:"remark"`
 	Remark OrderBaseRemark `json:"remark"`
+
+	PartnerCategory PartnerCategory `json:"partnerCategory"`
 }
 }
 
 
 //GetCurrentPartnerBonus 获取当前合伙人应收分红
 //GetCurrentPartnerBonus 获取当前合伙人应收分红

@@ -4,7 +4,6 @@ import (
 	"fmt"
 	"fmt"
 
 
 	"github.com/go-pg/pg/v10/orm"
 	"github.com/go-pg/pg/v10/orm"
-
 	"gitlab.fjmaimaimai.com/mmm-go/partnermg/pkg/domain"
 	"gitlab.fjmaimaimai.com/mmm-go/partnermg/pkg/domain"
 	"gitlab.fjmaimaimai.com/mmm-go/partnermg/pkg/infrastructure/pg/models"
 	"gitlab.fjmaimaimai.com/mmm-go/partnermg/pkg/infrastructure/pg/models"
 	"gitlab.fjmaimaimai.com/mmm-go/partnermg/pkg/infrastructure/pg/transaction"
 	"gitlab.fjmaimaimai.com/mmm-go/partnermg/pkg/infrastructure/pg/transaction"
@@ -74,3 +73,116 @@ func (dao OrderBaseDao) OrderBonusListByCondition(companyId int64, orderType int
 	cnt, err := query.SelectAndCount()
 	cnt, err := query.SelectAndCount()
 	return orders, cnt, err
 	return orders, cnt, err
 }
 }
+
+//导出分红列表所用的sql
+// SELECT
+// 	ROW_NUMBER() over(ORDER BY t1.update_time DESC) AS num,
+// 	t1.ID AS order_id,
+// 	t1.order_type,
+// 	t1.order_code,
+// 	t1.bonus_status,
+// 	to_char(t1.update_time at time zone 'CCT' ,'YYYY-MM-DD HH24:MI:SS') AS update_time,
+// 	(CASE
+// 	WHEN t1.use_partner_bonus>0
+// 	THEN
+// 		t1.use_partner_bonus
+// 	ELSE
+// 		t1.plan_partner_bonus
+// 	END) AS partner_bonus,
+// 	t1.partner_bonus_has,
+// 	t1.partner_bonus_not,
+// 	t1.partner_bonus_expense,
+// 	tt1.has_bonus_percent,
+// 	t2.partner_name
+// FROM
+// 	order_base AS t1
+// LEFT JOIN partner_info AS t2 ON t1.partner_id = t2."id"
+// LEFT JOIN (
+// 	SELECT COUNT ( * ) AS has_bonus_percent, t3.order_id
+// 	FROM "order_good" AS t3
+// 	WHERE t3.partner_bonus_percent >= 0
+// 	GROUP BY t3.order_id
+// ) AS tt1 ON t1."id" = tt1.order_id
+
+type CustomOrderBonusForExcel struct {
+	Num                 int
+	OrderId             int64
+	OrderType           int
+	OrderCode           string
+	BonusStatus         int
+	DeliveryCode        string
+	UpdateTime          string
+	PartnerBonus        float64
+	PartnerBonusHas     float64
+	PartnerBonusNot     float64
+	PartnerBonusExpense float64
+	HasBonusPercent     int
+	PartnerName         string
+}
+
+//OrderBonusListForExcel 导出分红列表所用
+//@param companyId 公司id
+//@param orderType 订单类型
+//@param partnerOrCode 合伙人姓名或订单号或发货单号
+//@param partnerCategory 合伙人类型id
+//@return result 处理后的数据，可直接用于导出数据到excel
+//@return column 数据对应的键名,例 [0][英文键名,中文名称]
+func (dao OrderBaseDao) OrderBonusListForExcel(companyId int64, orderType int, partnerOrCode string,
+	partnerCategory int) (result []CustomOrderBonusForExcel, err error) {
+
+	sqlStr := `SELECT
+		t1.ID AS order_id,
+		t1.order_type,
+		t1.order_code,
+		t1.delivery_code,
+		t1.bonus_status,
+		to_char(t1.update_time AT TIME ZONE 'CCT' ,'YYYY-MM-DD HH24:MI:SS') AS update_time,
+		(CASE 
+		WHEN t1.use_partner_bonus>0 
+		THEN
+			t1.use_partner_bonus
+		ELSE
+			t1.plan_partner_bonus
+		END) AS partner_bonus,
+		t1.partner_bonus_has,
+		t1.partner_bonus_not,
+		t1.partner_bonus_expense,
+		tt1.has_bonus_percent,
+		t2.partner_name 
+	FROM
+		order_base AS t1
+	LEFT JOIN partner_info AS t2 ON t1.partner_id = t2."id"
+	LEFT JOIN ( 
+		SELECT COUNT ( * ) AS has_bonus_percent, t3.order_id 
+		FROM "order_good" AS t3 
+		WHERE t3.partner_bonus_percent >= 0 
+		GROUP BY t3.order_id 
+	) AS tt1 ON t1."id" = tt1.order_id 
+	WHERE 1=1 `
+	sqlStr += ` AND t1.company_id = ? `
+	param := []interface{}{companyId}
+	if orderType > 0 {
+		param = append(param, orderType)
+		sqlStr += ` AND  t1.order_type=? `
+	} else {
+		param = append(param, domain.OrderIntention)
+		sqlStr += ` AND t1.order_type<>? `
+	}
+	if len(partnerOrCode) > 0 {
+		sqlStr += ` AND (t1.order_code like ? OR t1.delivery_code like ? OR t2.partner_name like ? )`
+		likeParam := "%" + partnerOrCode + "%"
+		param = append(param, likeParam, likeParam, likeParam)
+	}
+	if partnerCategory > 0 {
+		sqlStr += ` AND t1.partner_category @>'{"id":?}'`
+		param = append(param, partnerCategory)
+	}
+	sqlStr += ` ORDER BY t1.update_time DESC limit 10 `
+	tx := dao.transactionContext.GetDB()
+	_, err = tx.Query(&result, sqlStr, param...)
+
+	if err != nil {
+		return result, err
+	}
+	return result, nil
+}

@@ -67,6 +67,8 @@ type OrderBase struct {
 	DataFrom domain.OrderDataFrom ``
 	DataFrom domain.OrderDataFrom ``
 	//备注
 	//备注
 	Remark domain.OrderBaseRemark ``
 	Remark domain.OrderBaseRemark ``
+	//合伙人类型
+	PartnerCategory domain.PartnerCategory ``
 }
 }
 
 
 var _ pg.BeforeUpdateHook = (*OrderBase)(nil)
 var _ pg.BeforeUpdateHook = (*OrderBase)(nil)

+package exceltool
+
+import (
+	"errors"
+	"fmt"
+	"math/rand"
+	"time"
+
+	excelize "github.com/360EntSecGroup-Skylar/excelize/v2"
+)
+
+type ExcelHead struct {
+	Name string
+	Key  string
+}
+
+//ExcelMaker 构建excel文档
+type ExcelMaker struct {
+	Xlsx     *excelize.File
+	fileName string
+	header   []ExcelHead
+}
+
+//NewExcelMaker ....
+func NewExcelMaker() *ExcelMaker {
+	return &ExcelMaker{
+		Xlsx: excelize.NewFile(),
+	}
+}
+
+func (e *ExcelMaker) SetListHead(h []ExcelHead) {
+	e.header = h
+}
+
+func (e *ExcelMaker) SetFileName(n string) {
+	e.fileName = n
+}
+
+func (e *ExcelMaker) GetFileName() string {
+	return e.fileName
+}
+
+//MakeListExcel 根据列表形式的数据创建excel文档
+//@sourData []map[string]string; 原始数据，要输入excel文档的数据
+func (e *ExcelMaker) MakeListExcel(sourData []map[string]string) (err error) {
+	if len(e.header) == 0 {
+		return errors.New("xlsHeader 数据格式错误")
+	}
+	headEn := []string{}     //数据字段英文名
+	headCn := []string{}     //excel字段中文描述
+	alphaSlice := []string{} //excel列字母索引
+	for key, val := range e.header {
+		headEn = append(headEn, val.Key)
+		headCn = append(headCn, val.Name)
+		alpha, _ := excelize.ColumnNumberToName(key + 1)
+		// alpha := ToAlphaString(key)
+		alphaSlice = append(alphaSlice, alpha)
+	}
+
+	//设置excel文档第一行的字段中文描述
+	for index := range headCn {
+		//索引转列名,索引从0开始
+		cellAlpha := fmt.Sprintf("%s%d", alphaSlice[index], 1) // 单元格行坐标从1开始，如：a1，指第一行a列。
+		e.Xlsx.SetCellStr("Sheet1", cellAlpha, headCn[index])
+
+	}
+	//从excel第二行开始设置实际数据的值
+	for key1 := range sourData {
+		for i := 0; i < len(headEn); i++ {
+			cellAlpha := fmt.Sprintf("%s%d", alphaSlice[i], key1+2) // 单元格行坐标从1开始，如：a1，指第一行a列。
+			e.Xlsx.SetCellStr("Sheet1", cellAlpha, sourData[key1][headEn[i]])
+		}
+	}
+	e.SetFileName(GetRandomString(8) + ".xlsx")
+	return nil
+}
+
+//GetRandomString 生成随机字符串
+func GetRandomString(lenght int) string {
+	str := "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
+	bytes := []byte(str)
+	result := []byte{}
+	r := rand.New(rand.NewSource(time.Now().UnixNano()))
+	for i := 0; i < lenght; i++ {
+		result = append(result, bytes[r.Intn(len(bytes))])
+	}
+	return string(result)
+}
+
+func ToAlphaString(value int) string {
+	if value < 0 {
+		return ""
+	}
+	var ans string
+	i := value + 1
+	for i > 0 {
+		ans = string((i-1)%26+65) + ans
+		i = (i - 1) / 26
+	}
+	return ans
+}

@@ -8,12 +8,15 @@ import (
 	"strconv"
 	"strconv"
 	"strings"
 	"strings"
 
 
+	"github.com/astaxie/beego/context"
+
 	"github.com/astaxie/beego"
 	"github.com/astaxie/beego"
 	"github.com/astaxie/beego/logs"
 	"github.com/astaxie/beego/logs"
 
 
 	userQuery "gitlab.fjmaimaimai.com/mmm-go/partnermg/pkg/application/users/query"
 	userQuery "gitlab.fjmaimaimai.com/mmm-go/partnermg/pkg/application/users/query"
 	userService "gitlab.fjmaimaimai.com/mmm-go/partnermg/pkg/application/users/service"
 	userService "gitlab.fjmaimaimai.com/mmm-go/partnermg/pkg/application/users/service"
 	"gitlab.fjmaimaimai.com/mmm-go/partnermg/pkg/lib"
 	"gitlab.fjmaimaimai.com/mmm-go/partnermg/pkg/lib"
+	"gitlab.fjmaimaimai.com/mmm-go/partnermg/pkg/lib/exceltool"
 	"gitlab.fjmaimaimai.com/mmm-go/partnermg/pkg/port/beego/protocol"
 	"gitlab.fjmaimaimai.com/mmm-go/partnermg/pkg/port/beego/protocol"
 )
 )
 
 
@@ -206,3 +209,17 @@ func (controller *BaseController) GetUserCompany() int64 {
 	}
 	}
 	return uid
 	return uid
 }
 }
+
+func (controller *BaseController) ResponseExcelByFile(ctx *context.Context, excelMaker *exceltool.ExcelMaker) error {
+	fname := excelMaker.GetFileName()
+	ctx.Output.Header("Content-Disposition", "attachment; filename="+fname)
+	ctx.Output.Header("Content-Description", "File Transfer")
+	ctx.Output.Header("Content-Type", "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet")
+	ctx.Output.Header("Content-Transfer-Encoding", "binary")
+	ctx.Output.Header("Expires", "0")
+	ctx.Output.Header("Cache-Control", "must-revalidate")
+	ctx.Output.Header("Pragma", "public")
+	//跳过保存文件，直接写入ctx.ResponseWriter
+	excelMaker.Xlsx.Write(ctx.ResponseWriter)
+	return nil
+}

@@ -36,12 +36,20 @@ func (c *CommonController) GetPartnerList() {
 	}
 	}
 	resp := []map[string]interface{}{}
 	resp := []map[string]interface{}{}
 	for i := range partners {
 	for i := range partners {
+		categorys := []map[string]interface{}{}
+		for _, vv := range partners[i].PartnerCategoryInfos {
+			c := map[string]interface{}{
+				"id":   vv.Id,
+				"name": vv.Name,
+			}
+			categorys = append(categorys, c)
+		}
 		m := map[string]interface{}{
 		m := map[string]interface{}{
 			"id":          partners[i].Partner.Id,
 			"id":          partners[i].Partner.Id,
 			"account":     partners[i].Partner.Account,
 			"account":     partners[i].Partner.Account,
 			"partnerName": partners[i].Partner.PartnerName,
 			"partnerName": partners[i].Partner.PartnerName,
+			"categorys":   categorys,
 		}
 		}
-
 		resp = append(resp, m)
 		resp = append(resp, m)
 	}
 	}
 	c.ResponseData(resp)
 	c.ResponseData(resp)

@@ -10,6 +10,7 @@ import (
 	orderQuery "gitlab.fjmaimaimai.com/mmm-go/partnermg/pkg/application/orderinfo/query"
 	orderQuery "gitlab.fjmaimaimai.com/mmm-go/partnermg/pkg/application/orderinfo/query"
 	orderService "gitlab.fjmaimaimai.com/mmm-go/partnermg/pkg/application/orderinfo/service"
 	orderService "gitlab.fjmaimaimai.com/mmm-go/partnermg/pkg/application/orderinfo/service"
 	"gitlab.fjmaimaimai.com/mmm-go/partnermg/pkg/domain"
 	"gitlab.fjmaimaimai.com/mmm-go/partnermg/pkg/domain"
+	"gitlab.fjmaimaimai.com/mmm-go/partnermg/pkg/lib/exceltool"
 )
 )
 
 
 //OrderDividendController 订单分红管理
 //OrderDividendController 订单分红管理
@@ -399,3 +400,52 @@ func (c *OrderDividendController) EditOrderRemarkBonusForBestshop() {
 	c.ResponseData(nil)
 	c.ResponseData(nil)
 	return
 	return
 }
 }
+
+func (c *OrderDividendController) ListOrderBonusForExcel() {
+	type Parameter struct {
+		SearchWord string `json:"searchWord"`
+		OrderType  int    `json:"orderType"`
+		PageSize   int    `json:"pageSize"`
+		PageNumber int    `json:"pageNumber"`
+	}
+	var (
+		param Parameter
+		err   error
+	)
+	if err = c.BindJsonData(&param); err != nil {
+		logs.Error(err)
+		c.ResponseError(errors.New("json数据解析失败"))
+		return
+	}
+	if !(param.OrderType == 0 ||
+		param.OrderType == domain.OrderReal ||
+		param.OrderType == domain.OrderTypeBestShop) {
+		c.ResponseError(errors.New("参数异常"))
+		return
+	}
+
+	companyId := c.GetUserCompany()
+	orderSrv := orderService.NewOrderInfoService(nil)
+	dataResult, column, err := orderSrv.ListOrderBonusForExcel(orderQuery.ListOrderBonusQuery{
+		OrderType:     param.OrderType,
+		PartnerOrCode: param.SearchWord,
+		CompanyId:     companyId,
+	})
+	if err != nil {
+		c.ResponseError(err)
+		return
+	}
+	var excelHeaders []exceltool.ExcelHead
+	for i := range column {
+		h := exceltool.ExcelHead{
+			Key:  column[i][0],
+			Name: column[i][1],
+		}
+		excelHeaders = append(excelHeaders, h)
+	}
+	excelMaker := exceltool.NewExcelMaker()
+	excelMaker.SetListHead(excelHeaders)
+	excelMaker.MakeListExcel(dataResult)
+	c.ResponseExcelByFile(c.Ctx, excelMaker)
+	return
+}

@@ -33,10 +33,10 @@ func init() {
 			beego.NSRouter("/mini-program/modify", &controllers.OrderDividendController{}, "POST:EditOrderDividendForBestshop"),
 			beego.NSRouter("/mini-program/modify", &controllers.OrderDividendController{}, "POST:EditOrderDividendForBestshop"),
 			beego.NSRouter("/mini-program/payDividends", &controllers.OrderDividendController{}, "POST:PayOrderGoodBonusForBestshop"),
 			beego.NSRouter("/mini-program/payDividends", &controllers.OrderDividendController{}, "POST:PayOrderGoodBonusForBestshop"),
 			beego.NSRouter("/mini-program/remarks", &controllers.OrderDividendController{}, "POST:EditOrderRemarkBonusForBestshop"),
 			beego.NSRouter("/mini-program/remarks", &controllers.OrderDividendController{}, "POST:EditOrderRemarkBonusForBestshop"),
-
-			beego.NSRouter("/business/detail", &controllers.BusinessBonusController{}, "POST:GetBusinessBonus"),
-			beego.NSRouter("/business/edit", &controllers.BusinessBonusController{}, "POST:UpdateBusinessBonus"),
-			beego.NSRouter("/business/list", &controllers.BusinessBonusController{}, "POST:ListBusinessBonus"),
+			beego.NSRouter("/list/excel", &controllers.OrderDividendController{}, "POST:ListOrderBonusForExcel"),
+			// beego.NSRouter("/business/detail", &controllers.BusinessBonusController{}, "POST:GetBusinessBonus"),
+			// beego.NSRouter("/business/edit", &controllers.BusinessBonusController{}, "POST:UpdateBusinessBonus"),
+			// beego.NSRouter("/business/list", &controllers.BusinessBonusController{}, "POST:ListBusinessBonus"),
 		),
 		),
 		beego.NSNamespace("/order",
 		beego.NSNamespace("/order",
 			beego.NSRouter("/purpose/list", &controllers.OrderInfoController{}, "POST:PageListOrderPurpose"),
 			beego.NSRouter("/purpose/list", &controllers.OrderInfoController{}, "POST:PageListOrderPurpose"),

+~$*.xlsx
+test/Test*.xlsx
+*.out
+*.test
+.idea

+language: go
+
+install:
+  - go get -d -t -v ./... && go build -v ./...
+
+go:
+  - 1.11.x
+  - 1.12.x
+  - 1.13.x
+  - 1.14.x
+  - 1.15.x
+
+os:
+  - linux
+  - osx
+
+env:
+  jobs:
+    - GOARCH=amd64
+    - GOARCH=386
+
+script:
+  - env GO111MODULE=on go vet ./...
+  - env GO111MODULE=on go test -v -race ./... -coverprofile=coverage.txt -covermode=atomic
+
+after_success:
+  - bash <(curl -s https://codecov.io/bash)

+# Contributor Covenant Code of Conduct
+
+## Our Pledge
+
+In the interest of fostering an open and welcoming environment, we as contributors and maintainers pledge to making participation in our project and our community a harassment-free experience for everyone, regardless of age, body size, disability, ethnicity, gender identity and expression, level of experience, nationality, personal appearance, race, religion, or sexual identity and orientation.
+
+## Our Standards
+
+Examples of behavior that contributes to creating a positive environment include:
+
+* Using welcoming and inclusive language
+* Being respectful of differing viewpoints and experiences
+* Gracefully accepting constructive criticism
+* Focusing on what is best for the community
+* Showing empathy towards other community members
+
+Examples of unacceptable behavior by participants include:
+
+* The use of sexualized language or imagery and unwelcome sexual attention or advances
+* Trolling, insulting/derogatory comments, and personal or political attacks
+* Public or private harassment
+* Publishing others' private information, such as a physical or electronic address, without explicit permission
+* Other conduct which could reasonably be considered inappropriate in a professional setting
+
+## Our Responsibilities
+
+Project maintainers are responsible for clarifying the standards of acceptable behavior and are expected to take appropriate and fair corrective action in response to any instances of unacceptable behavior.
+
+Project maintainers have the right and responsibility to remove, edit, or reject comments, commits, code, wiki edits, issues, and other contributions that are not aligned to this Code of Conduct, or to ban temporarily or permanently any contributor for other behaviors that they deem inappropriate, threatening, offensive, or harmful.
+
+## Scope
+
+This Code of Conduct applies both within project spaces and in public spaces when an individual is representing the project or its community. Examples of representing a project or community include using an official project e-mail address, posting via an official social media account, or acting as an appointed representative at an online or offline event. Representation of a project may be further defined and clarified by project maintainers.
+
+## Enforcement
+
+Instances of abusive, harassing, or otherwise unacceptable behavior may be reported by contacting the project team at [xuri.me](https://xuri.me). The project team will review and investigate all complaints, and will respond in a way that it deems appropriate to the circumstances. The project team is obligated to maintain confidentiality with regard to the reporter of an incident. Further details of specific enforcement policies may be posted separately.
+
+Project maintainers who do not follow or enforce the Code of Conduct in good faith may face temporary or permanent repercussions as determined by other members of the project's leadership.
+
+## Attribution
+
+This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 2.0, available at [https://www.contributor-covenant.org/version/2/0/code_of_conduct][version]
+
+[homepage]: https://www.contributor-covenant.org
+[version]: https://www.contributor-covenant.org/version/2/0/code_of_conduct

+# Contributing to excelize
+
+Want to hack on excelize? Awesome! This page contains information about reporting issues as well as some tips and
+guidelines useful to experienced open source contributors. Finally, make sure
+you read our [community guidelines](#community-guidelines) before you
+start participating.
+
+## Topics
+
+* [Reporting Security Issues](#reporting-security-issues)
+* [Design and Cleanup Proposals](#design-and-cleanup-proposals)
+* [Reporting Issues](#reporting-other-issues)
+* [Quick Contribution Tips and Guidelines](#quick-contribution-tips-and-guidelines)
+* [Community Guidelines](#community-guidelines)
+
+## Reporting security issues
+
+The excelize maintainers take security seriously. If you discover a security
+issue, please bring it to their attention right away!
+
+Please **DO NOT** file a public issue, instead send your report privately to
+[xuri.me](https://xuri.me).
+
+Security reports are greatly appreciated and we will publicly thank you for it.
+We currently do not offer a paid security bounty program, but are not
+ruling it out in the future.
+
+## Reporting other issues
+
+A great way to contribute to the project is to send a detailed report when you
+encounter an issue. We always appreciate a well-written, thorough bug report,
+and will thank you for it!
+
+Check that [our issue database](https://github.com/360EntSecGroup-Skylar/excelize/issues)
+doesn't already include that problem or suggestion before submitting an issue.
+If you find a match, you can use the "subscribe" button to get notified on
+updates. Do *not* leave random "+1" or "I have this too" comments, as they
+only clutter the discussion, and don't help resolving it. However, if you
+have ways to reproduce the issue or have additional information that may help
+resolving the issue, please leave a comment.
+
+When reporting issues, always include the output of `go env`.
+
+Also include the steps required to reproduce the problem if possible and
+applicable. This information will help us review and fix your issue faster.
+When sending lengthy log-files, consider posting them as a gist [https://gist.github.com](https://gist.github.com).
+Don't forget to remove sensitive data from your logfiles before posting (you can
+replace those parts with "REDACTED").
+
+## Quick contribution tips and guidelines
+
+This section gives the experienced contributor some tips and guidelines.
+
+### Pull requests are always welcome
+
+Not sure if that typo is worth a pull request? Found a bug and know how to fix
+it? Do it! We will appreciate it. Any significant improvement should be
+documented as [a GitHub issue](https://github.com/360EntSecGroup-Skylar/excelize/issues) before
+anybody starts working on it.
+
+We are always thrilled to receive pull requests. We do our best to process them
+quickly. If your pull request is not accepted on the first try,
+don't get discouraged!
+
+### Design and cleanup proposals
+
+You can propose new designs for existing excelize features. You can also design
+entirely new features. We really appreciate contributors who want to refactor or
+otherwise cleanup our project.
+
+We try hard to keep excelize lean and focused. Excelize can't do everything for
+everybody. This means that we might decide against incorporating a new feature.
+However, there might be a way to implement that feature *on top of* excelize.
+
+### Conventions
+
+Fork the repository and make changes on your fork in a feature branch:
+
+* If it's a bug fix branch, name it XXXX-something where XXXX is the number of
+    the issue.
+* If it's a feature branch, create an enhancement issue to announce
+    your intentions, and name it XXXX-something where XXXX is the number of the
+    issue.
+
+Submit unit tests for your changes. Go has a great test framework built in; use
+it! Take a look at existing tests for inspiration. Run the full test on your branch before
+submitting a pull request.
+
+Update the documentation when creating or modifying features. Test your
+documentation changes for clarity, concision, and correctness, as well as a
+clean documentation build.
+
+Write clean code. Universally formatted code promotes ease of writing, reading,
+and maintenance. Always run `gofmt -s -w file.go` on each changed file before
+committing your changes. Most editors have plug-ins that do this automatically.
+
+Pull request descriptions should be as clear as possible and include a reference
+to all the issues that they address.
+
+### Successful Changes
+
+Before contributing large or high impact changes, make the effort to coordinate
+with the maintainers of the project before submitting a pull request. This
+prevents you from doing extra work that may or may not be merged.
+
+Large PRs that are just submitted without any prior communication are unlikely
+to be successful.
+
+While pull requests are the methodology for submitting changes to code, changes
+are much more likely to be accepted if they are accompanied by additional
+engineering work. While we don't define this explicitly, most of these goals
+are accomplished through communication of the design goals and subsequent
+solutions. Often times, it helps to first state the problem before presenting
+solutions.
+
+Typically, the best methods of accomplishing this are to submit an issue,
+stating the problem. This issue can include a problem statement and a
+checklist with requirements. If solutions are proposed, alternatives should be
+listed and eliminated. Even if the criteria for elimination of a solution is
+frivolous, say so.
+
+Larger changes typically work best with design documents. These are focused on
+providing context to the design at the time the feature was conceived and can
+inform future documentation contributions.
+
+### Commit Messages
+
+Commit messages must start with a capitalized and short summary
+written in the imperative, followed by an optional, more detailed explanatory
+text which is separated from the summary by an empty line.
+
+Commit messages should follow best practices, including explaining the context
+of the problem and how it was solved, including in caveats or follow up changes
+required. They should tell the story of the change and provide readers
+understanding of what led to it.
+
+In practice, the best approach to maintaining a nice commit message is to
+leverage a `git add -p` and `git commit --amend` to formulate a solid
+changeset. This allows one to piece together a change, as information becomes
+available.
+
+If you squash a series of commits, don't just submit that. Re-write the commit
+message, as if the series of commits was a single stroke of brilliance.
+
+That said, there is no requirement to have a single commit for a PR, as long as
+each commit tells the story. For example, if there is a feature that requires a
+package, it might make sense to have the package in a separate commit then have
+a subsequent commit that uses it.
+
+Remember, you're telling part of the story with the commit message. Don't make
+your chapter weird.
+
+### Review
+
+Code review comments may be added to your pull request. Discuss, then make the
+suggested modifications and push additional commits to your feature branch. Post
+a comment after pushing. New commits show up in the pull request automatically,
+but the reviewers are notified only when you comment.
+
+Pull requests must be cleanly rebased on top of master without multiple branches
+mixed into the PR.
+
+**Git tip**: If your PR no longer merges cleanly, use `rebase master` in your
+feature branch to update your pull request rather than `merge master`.
+
+Before you make a pull request, squash your commits into logical units of work
+using `git rebase -i` and `git push -f`. A logical unit of work is a consistent
+set of patches that should be reviewed together: for example, upgrading the
+version of a vendored dependency and taking advantage of its now available new
+feature constitute two separate units of work. Implementing a new function and
+calling it in another file constitute a single logical unit of work. The very
+high majority of submissions should have a single commit, so if in doubt: squash
+down to one.
+
+After every commit, make sure the test passes. Include documentation
+changes in the same pull request so that a revert would remove all traces of
+the feature or fix.
+
+Include an issue reference like `Closes #XXXX` or `Fixes #XXXX` in commits that
+close an issue. Including references automatically closes the issue on a merge.
+
+Please see the [Coding Style](#coding-style) for further guidelines.
+
+### Merge approval
+
+The excelize maintainers use LGTM (Looks Good To Me) in comments on the code review to
+indicate acceptance.
+
+### Sign your work
+
+The sign-off is a simple line at the end of the explanation for the patch. Your
+signature certifies that you wrote the patch or otherwise have the right to pass
+it on as an open-source patch. The rules are pretty simple: if you can certify
+the below (from [developercertificate.org](http://developercertificate.org/)):
+
+```text
+Developer Certificate of Origin
+Version 1.1
+
+Copyright (C) 2004, 2006 The Linux Foundation and its contributors.
+1 Letterman Drive
+Suite D4700
+San Francisco, CA, 94129
+
+Everyone is permitted to copy and distribute verbatim copies of this
+license document, but changing it is not allowed.
+
+Developer's Certificate of Origin 1.1
+
+By making a contribution to this project, I certify that:
+
+(a) The contribution was created in whole or in part by me and I
+    have the right to submit it under the open source license
+    indicated in the file; or
+
+(b) The contribution is based upon previous work that, to the best
+    of my knowledge, is covered under an appropriate open source
+    license and I have the right under that license to submit that
+    work with modifications, whether created in whole or in part
+    by me, under the same open source license (unless I am
+    permitted to submit under a different license), as indicated
+    in the file; or
+
+(c) The contribution was provided directly to me by some other
+    person who certified (a), (b) or (c) and I have not modified
+    it.
+
+(d) I understand and agree that this project and the contribution
+    are public and that a record of the contribution (including all
+    personal information I submit with it, including my sign-off) is
+    maintained indefinitely and may be redistributed consistent with
+    this project or the open source license(s) involved.
+```
+
+Then you just add a line to every git commit message:
+
+```text
+Signed-off-by: Ri Xu https://xuri.me
+```
+
+Use your real name (sorry, no pseudonyms or anonymous contributions.)
+
+If you set your `user.name` and `user.email` git configs, you can sign your
+commit automatically with `git commit -s`.
+
+### How can I become a maintainer
+
+First, all maintainers have 3 things
+
+* They share responsibility in the project's success.
+* They have made a long-term, recurring time investment to improve the project.
+* They spend that time doing whatever needs to be done, not necessarily what
+ is the most interesting or fun.
+
+Maintainers are often under-appreciated, because their work is harder to appreciate.
+It's easy to appreciate a really cool and technically advanced feature. It's harder
+to appreciate the absence of bugs, the slow but steady improvement in stability,
+or the reliability of a release process. But those things distinguish a good
+project from a great one.
+
+Don't forget: being a maintainer is a time investment. Make sure you
+will have time to make yourself available. You don't have to be a
+maintainer to make a difference on the project!
+
+If you want to become a meintainer, contact [xuri.me](https://xuri.me) and given a introduction of you.
+
+## Community guidelines
+
+We want to keep the community awesome, growing and collaborative. We need
+your help to keep it that way. To help with this we've come up with some general
+guidelines for the community as a whole:
+
+* Be nice: Be courteous, respectful and polite to fellow community members:
+  no regional, racial, gender, or other abuse will be tolerated. We like
+  nice people way better than mean ones!
+
+* Encourage diversity and participation: Make everyone in our community feel
+  welcome, regardless of their background and the extent of their
+  contributions, and do everything possible to encourage participation in
+  our community.
+
+* Keep it legal: Basically, don't get us in trouble. Share only content that
+  you own, do not share private or sensitive information, and don't break
+  the law.
+
+* Stay on topic: Make sure that you are posting to the correct channel and
+  avoid off-topic discussions. Remember when you update an issue or respond
+  to an email you are potentially sending to a large number of people. Please
+  consider this before you update. Also remember that nobody likes spam.
+
+* Don't send email to the maintainers: There's no need to send email to the
+  maintainers to ask them to investigate an issue or to take a look at a
+  pull request. Instead of sending an email, GitHub mentions should be
+  used to ping maintainers to review a pull request, a proposal or an
+  issue.
+
+### Guideline violations — 3 strikes method
+
+The point of this section is not to find opportunities to punish people, but we
+do need a fair way to deal with people who are making our community suck.
+
+1. First occurrence: We'll give you a friendly, but public reminder that the
+   behavior is inappropriate according to our guidelines.
+
+2. Second occurrence: We will send you a private message with a warning that
+   any additional violations will result in removal from the community.
+
+3. Third occurrence: Depending on the violation, we may need to delete or ban
+   your account.
+
+**Notes:**
+
+* Obvious spammers are banned on first occurrence. If we don't do this, we'll
+  have spam all over the place.
+
+* Violations are forgiven after 6 months of good behavior, and we won't hold a
+  grudge.
+
+* People who commit minor infractions will get some education, rather than
+  hammering them in the 3 strikes process.
+
+* The rules apply equally to everyone in the community, no matter how much
+    you've contributed.
+
+* Extreme violations of a threatening, abusive, destructive or illegal nature
+    will be addressed immediately and are not subject to 3 strikes or forgiveness.
+
+* Contact [xuri.me](https://xuri.me) to report abuse or appeal violations. In the case of
+    appeals, we know that mistakes happen, and we'll work with you to come up with a
+    fair solution if there has been a misunderstanding.
+
+## Coding Style
+
+Unless explicitly stated, we follow all coding guidelines from the Go
+community. While some of these standards may seem arbitrary, they somehow seem
+to result in a solid, consistent codebase.
+
+It is possible that the code base does not currently comply with these
+guidelines. We are not looking for a massive PR that fixes this, since that
+goes against the spirit of the guidelines. All new contributions should make a
+best effort to clean up and make the code base better than they left it.
+Obviously, apply your best judgement. Remember, the goal here is to make the
+code base easier for humans to navigate and understand. Always keep that in
+mind when nudging others to comply.
+
+The rules:
+
+1. All code should be formatted with `gofmt -s`.
+2. All code should pass the default levels of
+   [`golint`](https://github.com/golang/lint).
+3. All code should follow the guidelines covered in [Effective
+   Go](http://golang.org/doc/effective_go.html) and [Go Code Review
+   Comments](https://github.com/golang/go/wiki/CodeReviewComments).
+4. Comment the code. Tell us the why, the history and the context.
+5. Document _all_ declarations and methods, even private ones. Declare
+   expectations, caveats and anything else that may be important. If a type
+   gets exported, having the comments already there will ensure it's ready.
+6. Variable name length should be proportional to its context and no longer.
+   `noCommaALongVariableNameLikeThisIsNotMoreClearWhenASimpleCommentWouldDo`.
+   In practice, short methods will have short variable names and globals will
+   have longer names.
+7. No underscores in package names. If you need a compound name, step back,
+   and re-examine why you need a compound name. If you still think you need a
+   compound name, lose the underscore.
+8. No utils or helpers packages. If a function is not general enough to
+   warrant its own package, it has not been written generally enough to be a
+   part of a util package. Just leave it unexported and well-documented.
+9. All tests should run with `go test` and outside tooling should not be
+   required. No, we don't need another unit testing framework. Assertion
+   packages are acceptable if they provide _real_ incremental value.
+10. Even though we call these "rules" above, they are actually just
+    guidelines. Since you've read all the rules, you now know that.
+
+If you are having trouble getting into the mood of idiomatic Go, we recommend
+reading through [Effective Go](https://golang.org/doc/effective_go.html). The
+[Go Blog](https://blog.golang.org) is also a great resource. Drinking the
+kool-aid is a lot easier than going thirsty.
+
+## Code Review Comments and Effective Go Guidelines
+
+[CodeLingo](https://codelingo.io) automatically checks every pull request against the following guidelines from [Effective Go](https://golang.org/doc/effective_go.html) and [Code Review Comments](https://github.com/golang/go/wiki/CodeReviewComments).
+
+### Package Comment
+
+Every package should have a package comment, a block comment preceding the package clause.
+For multi-file packages, the package comment only needs to be present in one file, and any one will do.
+The package comment should introduce the package and provide information relevant to the package as a
+whole. It will appear first on the godoc page and should set up the detailed documentation that follows.
+
+### Single Method Interface Name
+
+By convention, one-method interfaces are named by the method name plus an -er suffix
+or similar modification to construct an agent noun: Reader, Writer, Formatter, CloseNotifier etc.
+
+There are a number of such names and it's productive to honor them and the function names they capture.
+Read, Write, Close, Flush, String and so on have canonical signatures and meanings. To avoid confusion,
+don't give your method one of those names unless it has the same signature and meaning. Conversely,
+if your type implements a method with the same meaning as a method on a well-known type, give it the
+same name and signature; call your string-converter method String not ToString.
+
+### Avoid Annotations in Comments
+
+Comments do not need extra formatting such as banners of stars. The generated output
+may not even be presented in a fixed-width font, so don't depend on spacing for alignment—godoc,
+like gofmt, takes care of that. The comments are uninterpreted plain text, so HTML and other
+annotations such as _this_ will reproduce verbatim and should not be used. One adjustment godoc
+does do is to display indented text in a fixed-width font, suitable for program snippets.
+The package comment for the fmt package uses this to good effect.
+
+### Comment First Word as Subject
+
+Doc comments work best as complete sentences, which allow a wide variety of automated presentations.
+The first sentence should be a one-sentence summary that starts with the name being declared.
+
+### Good Package Name
+
+It's helpful if everyone using the package can use the same name
+to refer to its contents, which implies that the package name should
+be good: short, concise, evocative. By convention, packages are
+given lower case, single-word names; there should be no need for
+underscores or mixedCaps. Err on the side of brevity, since everyone
+using your package will be typing that name. And don't worry about
+collisions a priori. The package name is only the default name for
+imports; it need not be unique across all source code, and in the
+rare case of a collision the importing package can choose a different
+name to use locally. In any case, confusion is rare because the file
+name in the import determines just which package is being used.
+
+### Avoid Renaming Imports
+
+Avoid renaming imports except to avoid a name collision; good package names
+should not require renaming. In the event of collision, prefer to rename the
+most local or project-specific import.
+
+### Context as First Argument
+
+Values of the context.Context type carry security credentials, tracing information,
+deadlines, and cancellation signals across API and process boundaries. Go programs
+pass Contexts explicitly along the entire function call chain from incoming RPCs
+and HTTP requests to outgoing requests.
+
+Most functions that use a Context should accept it as their first parameter.
+
+### Do Not Discard Errors
+
+Do not discard errors using _ variables. If a function returns an error,
+check it to make sure the function succeeded. Handle the error, return it, or,
+in truly exceptional situations, panic.
+
+### Go Error Format
+
+Error strings should not be capitalized (unless beginning with proper nouns
+or acronyms) or end with punctuation, since they are usually printed following
+other context. That is, use fmt.Errorf("something bad") not fmt.Errorf("Something bad"),
+so that log.Printf("Reading %s: %v", filename, err) formats without a spurious
+capital letter mid-message. This does not apply to logging, which is implicitly
+line-oriented and not combined inside other messages.
+
+### Use Crypto Rand
+
+Do not use package math/rand to generate keys, even
+throwaway ones. Unseeded, the generator is completely predictable.
+Seeded with time.Nanoseconds(), there are just a few bits of entropy.
+Instead, use crypto/rand's Reader, and if you need text, print to
+hexadecimal or base64.

+BSD 3-Clause License
+
+Copyright (c) 2016-2020 The excelize Authors.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+* Redistributions of source code must retain the above copyright notice, this
+  list of conditions and the following disclaimer.
+
+* Redistributions in binary form must reproduce the above copyright notice,
+  this list of conditions and the following disclaimer in the documentation
+  and/or other materials provided with the distribution.
+
+* Neither the name of the copyright holder nor the names of its
+  contributors may be used to endorse or promote products derived from
+  this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

+# PR Details
+
+<!--- Provide a general summary of your changes in the Title above -->
+
+## Description
+
+<!--- Describe your changes in detail -->
+
+## Related Issue
+
+<!--- This project only accepts pull requests related to open issues -->
+<!--- If suggesting a new feature or change, please discuss it in an issue first -->
+<!--- If fixing a bug, there should be an issue describing it with steps to reproduce -->
+<!--- Please link to the issue here: -->
+
+## Motivation and Context
+
+<!--- Why is this change required? What problem does it solve? -->
+
+## How Has This Been Tested
+
+<!--- Please describe in detail how you tested your changes. -->
+<!--- Include details of your testing environment, and the tests you ran to -->
+<!--- see how your change affects other areas of the code, etc. -->
+
+## Types of changes
+
+<!--- What types of changes does your code introduce? Put an `x` in all the boxes that apply: -->
+
+- [ ] Docs change / refactoring / dependency upgrade
+- [ ] Bug fix (non-breaking change which fixes an issue)
+- [ ] New feature (non-breaking change which adds functionality)
+- [ ] Breaking change (fix or feature that would cause existing functionality to change)
+
+## Checklist
+
+<!--- Go over all the following points, and put an `x` in all the boxes that apply. -->
+<!--- If you're unsure about any of these, don't hesitate to ask. We're here to help! -->
+
+- [ ] My code follows the code style of this project.
+- [ ] My change requires a change to the documentation.
+- [ ] I have updated the documentation accordingly.
+- [ ] I have read the **CONTRIBUTING** document.
+- [ ] I have added tests to cover my changes.
+- [ ] All new and existing tests passed.

+<p align="center"><img width="650" src="./excelize.svg" alt="Excelize logo"></p>
+
+<p align="center">
+    <a href="https://travis-ci.org/360EntSecGroup-Skylar/excelize"><img src="https://travis-ci.org/360EntSecGroup-Skylar/excelize.svg?branch=master" alt="Build Status"></a>
+    <a href="https://codecov.io/gh/360EntSecGroup-Skylar/excelize"><img src="https://codecov.io/gh/360EntSecGroup-Skylar/excelize/branch/master/graph/badge.svg" alt="Code Coverage"></a>
+    <a href="https://goreportcard.com/report/github.com/360EntSecGroup-Skylar/excelize"><img src="https://goreportcard.com/badge/github.com/360EntSecGroup-Skylar/excelize" alt="Go Report Card"></a>
+    <a href="https://pkg.go.dev/github.com/360EntSecGroup-Skylar/excelize/v2?tab=doc"><img src="https://img.shields.io/badge/go.dev-reference-007d9c?logo=go&logoColor=white" alt="go.dev"></a>
+    <a href="https://opensource.org/licenses/BSD-3-Clause"><img src="https://img.shields.io/badge/license-bsd-orange.svg" alt="Licenses"></a>
+    <a href="https://www.paypal.me/xuri"><img src="https://img.shields.io/badge/Donate-PayPal-green.svg" alt="Donate"></a>
+</p>
+
+# Excelize
+
+## Introduction
+
+Excelize is a library written in pure Go providing a set of functions that allow you to write to and read from XLSX / XLSM / XLTM files. Supports reading and writing spreadsheet documents generated by Microsoft Excel&trade; 2007 and later. Supports complex components by high compatibility, and provided streaming API for generating or reading data from a worksheet with huge amounts of data. This library needs Go version 1.10 or later. The full API docs can be seen using go's built-in documentation tool, or online at [go.dev](https://pkg.go.dev/github.com/360EntSecGroup-Skylar/excelize/v2?tab=doc) and [docs reference](https://xuri.me/excelize/).
+
+## Basic Usage
+
+### Installation
+
+```bash
+go get github.com/360EntSecGroup-Skylar/excelize
+```
+
+- If your package management with [Go Modules](https://blog.golang.org/using-go-modules), please install with following command.
+
+```bash
+go get github.com/360EntSecGroup-Skylar/excelize/v2
+```
+
+### Create spreadsheet
+
+Here is a minimal example usage that will create spreadsheet file.
+
+```go
+package main
+
+import (
+    "fmt"
+
+    "github.com/360EntSecGroup-Skylar/excelize"
+)
+
+func main() {
+    f := excelize.NewFile()
+    // Create a new sheet.
+    index := f.NewSheet("Sheet2")
+    // Set value of a cell.
+    f.SetCellValue("Sheet2", "A2", "Hello world.")
+    f.SetCellValue("Sheet1", "B2", 100)
+    // Set active sheet of the workbook.
+    f.SetActiveSheet(index)
+    // Save xlsx file by the given path.
+    if err := f.SaveAs("Book1.xlsx"); err != nil {
+        fmt.Println(err)
+    }
+}
+```
+
+### Reading spreadsheet
+
+The following constitutes the bare to read a spreadsheet document.
+
+```go
+package main
+
+import (
+    "fmt"
+
+    "github.com/360EntSecGroup-Skylar/excelize"
+)
+
+func main() {
+    f, err := excelize.OpenFile("Book1.xlsx")
+    if err != nil {
+        fmt.Println(err)
+        return
+    }
+    // Get value from cell by given worksheet name and axis.
+    cell, err := f.GetCellValue("Sheet1", "B2")
+    if err != nil {
+        fmt.Println(err)
+        return
+    }
+    fmt.Println(cell)
+    // Get all the rows in the Sheet1.
+    rows, err := f.GetRows("Sheet1")
+    for _, row := range rows {
+        for _, colCell := range row {
+            fmt.Print(colCell, "\t")
+        }
+        fmt.Println()
+    }
+}
+```
+
+### Add chart to spreadsheet file
+
+With Excelize chart generation and management is as easy as a few lines of code. You can build charts based off data in your worksheet or generate charts without any data in your worksheet at all.
+
+<p align="center"><img width="650" src="./test/images/chart.png" alt="Excelize"></p>
+
+```go
+package main
+
+import (
+    "fmt"
+
+    "github.com/360EntSecGroup-Skylar/excelize"
+)
+
+func main() {
+    categories := map[string]string{"A2": "Small", "A3": "Normal", "A4": "Large", "B1": "Apple", "C1": "Orange", "D1": "Pear"}
+    values := map[string]int{"B2": 2, "C2": 3, "D2": 3, "B3": 5, "C3": 2, "D3": 4, "B4": 6, "C4": 7, "D4": 8}
+    f := excelize.NewFile()
+    for k, v := range categories {
+        f.SetCellValue("Sheet1", k, v)
+    }
+    for k, v := range values {
+        f.SetCellValue("Sheet1", k, v)
+    }
+    if err := f.AddChart("Sheet1", "E1", `{"type":"col3DClustered","series":[{"name":"Sheet1!$A$2","categories":"Sheet1!$B$1:$D$1","values":"Sheet1!$B$2:$D$2"},{"name":"Sheet1!$A$3","categories":"Sheet1!$B$1:$D$1","values":"Sheet1!$B$3:$D$3"},{"name":"Sheet1!$A$4","categories":"Sheet1!$B$1:$D$1","values":"Sheet1!$B$4:$D$4"}],"title":{"name":"Fruit 3D Clustered Column Chart"}}`); err != nil {
+        fmt.Println(err)
+        return
+    }
+    // Save xlsx file by the given path.
+    if err := f.SaveAs("Book1.xlsx"); err != nil {
+        fmt.Println(err)
+    }
+}
+```
+
+### Add picture to spreadsheet file
+
+```go
+package main
+
+import (
+    "fmt"
+    _ "image/gif"
+    _ "image/jpeg"
+    _ "image/png"
+
+    "github.com/360EntSecGroup-Skylar/excelize"
+)
+
+func main() {
+    f, err := excelize.OpenFile("Book1.xlsx")
+    if err != nil {
+        fmt.Println(err)
+        return
+    }
+    // Insert a picture.
+    if err := f.AddPicture("Sheet1", "A2", "image.png", ""); err != nil {
+        fmt.Println(err)
+    }
+    // Insert a picture to worksheet with scaling.
+    if err := f.AddPicture("Sheet1", "D2", "image.jpg", `{"x_scale": 0.5, "y_scale": 0.5}`); err != nil {
+        fmt.Println(err)
+    }
+    // Insert a picture offset in the cell with printing support.
+    if err := f.AddPicture("Sheet1", "H2", "image.gif", `{"x_offset": 15, "y_offset": 10, "print_obj": true, "lock_aspect_ratio": false, "locked": false}`); err != nil {
+        fmt.Println(err)
+    }
+    // Save the xlsx file with the origin path.
+    if err = f.Save(); err != nil {
+        fmt.Println(err)
+    }
+}
+```
+
+## Contributing
+
+Contributions are welcome! Open a pull request to fix a bug, or open an issue to discuss a new feature or change. XML is compliant with [part 1 of the 5th edition of the ECMA-376 Standard for Office Open XML](http://www.ecma-international.org/publications/standards/Ecma-376.htm).
+
+## Licenses
+
+This program is under the terms of the BSD 3-Clause License. See [https://opensource.org/licenses/BSD-3-Clause](https://opensource.org/licenses/BSD-3-Clause).
+
+The Excel logo is a trademark of [Microsoft Corporation](https://aka.ms/trademarks-usage). This artwork is an adaptation.
+
+gopher.{ai,svg,png} was created by [Takuya Ueda](https://twitter.com/tenntenn). Licensed under the [Creative Commons 3.0 Attributions license](http://creativecommons.org/licenses/by/3.0/).

+<p align="center"><img width="650" src="./excelize.svg" alt="Excelize logo"></p>
+
+<p align="center">
+    <a href="https://travis-ci.org/360EntSecGroup-Skylar/excelize"><img src="https://travis-ci.org/360EntSecGroup-Skylar/excelize.svg?branch=master" alt="Build Status"></a>
+    <a href="https://codecov.io/gh/360EntSecGroup-Skylar/excelize"><img src="https://codecov.io/gh/360EntSecGroup-Skylar/excelize/branch/master/graph/badge.svg" alt="Code Coverage"></a>
+    <a href="https://goreportcard.com/report/github.com/360EntSecGroup-Skylar/excelize"><img src="https://goreportcard.com/badge/github.com/360EntSecGroup-Skylar/excelize" alt="Go Report Card"></a>
+    <a href="https://pkg.go.dev/github.com/360EntSecGroup-Skylar/excelize/v2?tab=doc"><img src="https://img.shields.io/badge/go.dev-reference-007d9c?logo=go&logoColor=white" alt="go.dev"></a>
+    <a href="https://opensource.org/licenses/BSD-3-Clause"><img src="https://img.shields.io/badge/license-bsd-orange.svg" alt="Licenses"></a>
+    <a href="https://www.paypal.me/xuri"><img src="https://img.shields.io/badge/Donate-PayPal-green.svg" alt="Donate"></a>
+</p>
+
+# Excelize
+
+## 简介
+
+Excelize 是 Go 语言编写的用于操作 Office Excel 文档基础库，基于 ECMA-376，ISO/IEC 29500 国际标准。可以使用它来读取、写入由 Microsoft Excel&trade; 2007 及以上版本创建的电子表格文档。支持 XLSX / XLSM / XLTM 等多种文档格式，高度兼容带有样式、图片(表)、透视表、切片器等复杂组件的文档，并提供流式读写 API，用于处理包含大规模数据的工作簿。可应用于各类报表平台、云计算、边缘计算等系统。使用本类库要求使用的 Go 语言为 1.10 或更高版本，完整的 API 使用文档请访问 [go.dev](https://pkg.go.dev/github.com/360EntSecGroup-Skylar/excelize/v2?tab=doc) 或查看 [参考文档](https://xuri.me/excelize/)。
+
+## 快速上手
+
+### 安装
+
+```bash
+go get github.com/360EntSecGroup-Skylar/excelize
+```
+
+- 如果您使用 [Go Modules](https://blog.golang.org/using-go-modules) 管理软件包，请使用下面的命令来安装最新版本。
+
+```bash
+go get github.com/360EntSecGroup-Skylar/excelize/v2
+```
+
+### 创建 Excel 文档
+
+下面是一个创建 Excel 文档的简单例子：
+
+```go
+package main
+
+import (
+    "fmt"
+
+    "github.com/360EntSecGroup-Skylar/excelize"
+)
+
+func main() {
+    f := excelize.NewFile()
+    // 创建一个工作表
+    index := f.NewSheet("Sheet2")
+    // 设置单元格的值
+    f.SetCellValue("Sheet2", "A2", "Hello world.")
+    f.SetCellValue("Sheet1", "B2", 100)
+    // 设置工作簿的默认工作表
+    f.SetActiveSheet(index)
+    // 根据指定路径保存文件
+    if err := f.SaveAs("Book1.xlsx"); err != nil {
+        fmt.Println(err)
+    }
+}
+```
+
+### 读取 Excel 文档
+
+下面是读取 Excel 文档的例子：
+
+```go
+package main
+
+import (
+    "fmt"
+
+    "github.com/360EntSecGroup-Skylar/excelize"
+)
+
+func main() {
+    f, err := excelize.OpenFile("Book1.xlsx")
+    if err != nil {
+        fmt.Println(err)
+        return
+    }
+    // 获取工作表中指定单元格的值
+    cell, err := f.GetCellValue("Sheet1", "B2")
+    if err != nil {
+        fmt.Println(err)
+        return
+    }
+    fmt.Println(cell)
+    // 获取 Sheet1 上所有单元格
+    rows, err := f.GetRows("Sheet1")
+    for _, row := range rows {
+        for _, colCell := range row {
+            fmt.Print(colCell, "\t")
+        }
+        fmt.Println()
+    }
+}
+```
+
+### 在 Excel 文档中创建图表
+
+使用 Excelize 生成图表十分简单，仅需几行代码。您可以根据工作表中的已有数据构建图表，或向工作表中添加数据并创建图表。
+
+<p align="center"><img width="650" src="./test/images/chart.png" alt="Excelize"></p>
+
+```go
+package main
+
+import (
+    "fmt"
+
+    "github.com/360EntSecGroup-Skylar/excelize"
+)
+
+func main() {
+    categories := map[string]string{"A2": "Small", "A3": "Normal", "A4": "Large", "B1": "Apple", "C1": "Orange", "D1": "Pear"}
+    values := map[string]int{"B2": 2, "C2": 3, "D2": 3, "B3": 5, "C3": 2, "D3": 4, "B4": 6, "C4": 7, "D4": 8}
+    f := excelize.NewFile()
+    for k, v := range categories {
+        f.SetCellValue("Sheet1", k, v)
+    }
+    for k, v := range values {
+        f.SetCellValue("Sheet1", k, v)
+    }
+    if err := f.AddChart("Sheet1", "E1", `{"type":"col3DClustered","series":[{"name":"Sheet1!$A$2","categories":"Sheet1!$B$1:$D$1","values":"Sheet1!$B$2:$D$2"},{"name":"Sheet1!$A$3","categories":"Sheet1!$B$1:$D$1","values":"Sheet1!$B$3:$D$3"},{"name":"Sheet1!$A$4","categories":"Sheet1!$B$1:$D$1","values":"Sheet1!$B$4:$D$4"}],"title":{"name":"Fruit 3D Clustered Column Chart"}}`); err != nil {
+        fmt.Println(err)
+        return
+    }
+    // 根据指定路径保存文件
+    if err := f.SaveAs("Book1.xlsx"); err != nil {
+        fmt.Println(err)
+    }
+}
+```
+
+### 向 Excel 文档中插入图片
+
+```go
+package main
+
+import (
+    "fmt"
+    _ "image/gif"
+    _ "image/jpeg"
+    _ "image/png"
+
+    "github.com/360EntSecGroup-Skylar/excelize"
+)
+
+func main() {
+    f, err := excelize.OpenFile("Book1.xlsx")
+    if err != nil {
+        fmt.Println(err)
+        return
+    }
+    // 插入图片
+    if err := f.AddPicture("Sheet1", "A2", "image.png", ""); err != nil {
+        fmt.Println(err)
+    }
+    // 在工作表中插入图片，并设置图片的缩放比例
+    if err := f.AddPicture("Sheet1", "D2", "image.jpg", `{"x_scale": 0.5, "y_scale": 0.5}`); err != nil {
+        fmt.Println(err)
+    }
+    // 在工作表中插入图片，并设置图片的打印属性
+    if err := f.AddPicture("Sheet1", "H2", "image.gif", `{"x_offset": 15, "y_offset": 10, "print_obj": true, "lock_aspect_ratio": false, "locked": false}`); err != nil {
+        fmt.Println(err)
+    }
+    // 保存文件
+    if err = f.Save(); err != nil {
+        fmt.Println(err)
+    }
+}
+```
+
+## 社区合作
+
+欢迎您为此项目贡献代码，提出建议或问题、修复 Bug 以及参与讨论对新功能的想法。 XML 符合标准： [part 1 of the 5th edition of the ECMA-376 Standard for Office Open XML](http://www.ecma-international.org/publications/standards/Ecma-376.htm)。
+
+## 开源许可
+
+本项目遵循 BSD 3-Clause 开源许可协议，访问 [https://opensource.org/licenses/BSD-3-Clause](https://opensource.org/licenses/BSD-3-Clause) 查看许可协议文件。
+
+Excel 徽标是 [Microsoft Corporation](https://aka.ms/trademarks-usage) 的商标，项目的图片是一种改编。
+
+gopher.{ai,svg,png} 由 [Takuya Ueda](https://twitter.com/tenntenn) 创作，遵循 [Creative Commons 3.0 Attributions license](http://creativecommons.org/licenses/by/3.0/) 创作共用授权条款。

+# Security Policy
+
+## Supported Versions
+
+We will dive into any security-related issue as long as your Excelize version is still supported by us. When reporting an issue, include as much information as possible, but no need to fill fancy forms or answer tedious questions. Just tell us what you found, how to reproduce it, and any concerns you have about it. We will respond as soon as possible and follow up with any missing information.
+
+## Reporting a Vulnerability
+
+Please e-mail us directly at `xuri.me@gmail.com` or use the security issue template on GitHub. In general, public disclosure is made after the issue has been fully identified and a patch is ready to be released. A security issue gets the highest priority assigned and a reply regarding the vulnerability is given within a typical 24 hours. Thank you!

+// Copyright 2016 - 2020 The excelize Authors. All rights reserved. Use of
+// this source code is governed by a BSD-style license that can be found in
+// the LICENSE file.
+//
+// Package excelize providing a set of functions that allow you to write to
+// and read from XLSX / XLSM / XLTM files. Supports reading and writing
+// spreadsheet documents generated by Microsoft Exce™ 2007 and later. Supports
+// complex components by high compatibility, and provided streaming API for
+// generating or reading data from a worksheet with huge amounts of data. This
+// library needs Go version 1.10 or later.
+
+package excelize
+
+import (
+	"errors"
+	"strings"
+)
+
+type adjustDirection bool
+
+const (
+	columns adjustDirection = false
+	rows    adjustDirection = true
+)
+
+// adjustHelper provides a function to adjust rows and columns dimensions,
+// hyperlinks, merged cells and auto filter when inserting or deleting rows or
+// columns.
+//
+// sheet: Worksheet name that we're editing
+// column: Index number of the column we're inserting/deleting before
+// row: Index number of the row we're inserting/deleting before
+// offset: Number of rows/column to insert/delete negative values indicate deletion
+//
+// TODO: adjustPageBreaks, adjustComments, adjustDataValidations, adjustProtectedCells
+//
+func (f *File) adjustHelper(sheet string, dir adjustDirection, num, offset int) error {
+	xlsx, err := f.workSheetReader(sheet)
+	if err != nil {
+		return err
+	}
+	if dir == rows {
+		f.adjustRowDimensions(xlsx, num, offset)
+	} else {
+		f.adjustColDimensions(xlsx, num, offset)
+	}
+	f.adjustHyperlinks(xlsx, sheet, dir, num, offset)
+	if err = f.adjustMergeCells(xlsx, dir, num, offset); err != nil {
+		return err
+	}
+	if err = f.adjustAutoFilter(xlsx, dir, num, offset); err != nil {
+		return err
+	}
+	if err = f.adjustCalcChain(dir, num, offset); err != nil {
+		return err
+	}
+	checkSheet(xlsx)
+	_ = checkRow(xlsx)
+
+	if xlsx.MergeCells != nil && len(xlsx.MergeCells.Cells) == 0 {
+		xlsx.MergeCells = nil
+	}
+
+	return nil
+}
+
+// adjustColDimensions provides a function to update column dimensions when
+// inserting or deleting rows or columns.
+func (f *File) adjustColDimensions(xlsx *xlsxWorksheet, col, offset int) {
+	for rowIdx := range xlsx.SheetData.Row {
+		for colIdx, v := range xlsx.SheetData.Row[rowIdx].C {
+			cellCol, cellRow, _ := CellNameToCoordinates(v.R)
+			if col <= cellCol {
+				if newCol := cellCol + offset; newCol > 0 {
+					xlsx.SheetData.Row[rowIdx].C[colIdx].R, _ = CoordinatesToCellName(newCol, cellRow)
+				}
+			}
+		}
+	}
+}
+
+// adjustRowDimensions provides a function to update row dimensions when
+// inserting or deleting rows or columns.
+func (f *File) adjustRowDimensions(xlsx *xlsxWorksheet, row, offset int) {
+	for i := range xlsx.SheetData.Row {
+		r := &xlsx.SheetData.Row[i]
+		if newRow := r.R + offset; r.R >= row && newRow > 0 {
+			f.ajustSingleRowDimensions(r, newRow)
+		}
+	}
+}
+
+// ajustSingleRowDimensions provides a function to ajust single row dimensions.
+func (f *File) ajustSingleRowDimensions(r *xlsxRow, num int) {
+	r.R = num
+	for i, col := range r.C {
+		colName, _, _ := SplitCellName(col.R)
+		r.C[i].R, _ = JoinCellName(colName, num)
+	}
+}
+
+// adjustHyperlinks provides a function to update hyperlinks when inserting or
+// deleting rows or columns.
+func (f *File) adjustHyperlinks(xlsx *xlsxWorksheet, sheet string, dir adjustDirection, num, offset int) {
+	// short path
+	if xlsx.Hyperlinks == nil || len(xlsx.Hyperlinks.Hyperlink) == 0 {
+		return
+	}
+
+	// order is important
+	if offset < 0 {
+		for i := len(xlsx.Hyperlinks.Hyperlink) - 1; i >= 0; i-- {
+			linkData := xlsx.Hyperlinks.Hyperlink[i]
+			colNum, rowNum, _ := CellNameToCoordinates(linkData.Ref)
+
+			if (dir == rows && num == rowNum) || (dir == columns && num == colNum) {
+				f.deleteSheetRelationships(sheet, linkData.RID)
+				if len(xlsx.Hyperlinks.Hyperlink) > 1 {
+					xlsx.Hyperlinks.Hyperlink = append(xlsx.Hyperlinks.Hyperlink[:i],
+						xlsx.Hyperlinks.Hyperlink[i+1:]...)
+				} else {
+					xlsx.Hyperlinks = nil
+				}
+			}
+		}
+	}
+
+	if xlsx.Hyperlinks == nil {
+		return
+	}
+
+	for i := range xlsx.Hyperlinks.Hyperlink {
+		link := &xlsx.Hyperlinks.Hyperlink[i] // get reference
+		colNum, rowNum, _ := CellNameToCoordinates(link.Ref)
+
+		if dir == rows {
+			if rowNum >= num {
+				link.Ref, _ = CoordinatesToCellName(colNum, rowNum+offset)
+			}
+		} else {
+			if colNum >= num {
+				link.Ref, _ = CoordinatesToCellName(colNum+offset, rowNum)
+			}
+		}
+	}
+}
+
+// adjustAutoFilter provides a function to update the auto filter when
+// inserting or deleting rows or columns.
+func (f *File) adjustAutoFilter(xlsx *xlsxWorksheet, dir adjustDirection, num, offset int) error {
+	if xlsx.AutoFilter == nil {
+		return nil
+	}
+
+	coordinates, err := f.areaRefToCoordinates(xlsx.AutoFilter.Ref)
+	if err != nil {
+		return err
+	}
+	x1, y1, x2, y2 := coordinates[0], coordinates[1], coordinates[2], coordinates[3]
+
+	if (dir == rows && y1 == num && offset < 0) || (dir == columns && x1 == num && x2 == num) {
+		xlsx.AutoFilter = nil
+		for rowIdx := range xlsx.SheetData.Row {
+			rowData := &xlsx.SheetData.Row[rowIdx]
+			if rowData.R > y1 && rowData.R <= y2 {
+				rowData.Hidden = false
+			}
+		}
+		return nil
+	}
+
+	coordinates = f.adjustAutoFilterHelper(dir, coordinates, num, offset)
+	x1, y1, x2, y2 = coordinates[0], coordinates[1], coordinates[2], coordinates[3]
+
+	if xlsx.AutoFilter.Ref, err = f.coordinatesToAreaRef([]int{x1, y1, x2, y2}); err != nil {
+		return err
+	}
+	return nil
+}
+
+// adjustAutoFilterHelper provides a function for adjusting auto filter to
+// compare and calculate cell axis by the given adjust direction, operation
+// axis and offset.
+func (f *File) adjustAutoFilterHelper(dir adjustDirection, coordinates []int, num, offset int) []int {
+	if dir == rows {
+		if coordinates[1] >= num {
+			coordinates[1] += offset
+		}
+		if coordinates[3] >= num {
+			coordinates[3] += offset
+		}
+	} else {
+		if coordinates[2] >= num {
+			coordinates[2] += offset
+		}
+	}
+	return coordinates
+}
+
+// areaRefToCoordinates provides a function to convert area reference to a
+// pair of coordinates.
+func (f *File) areaRefToCoordinates(ref string) ([]int, error) {
+	rng := strings.Split(ref, ":")
+	return areaRangeToCoordinates(rng[0], rng[1])
+}
+
+// areaRangeToCoordinates provides a function to convert cell range to a
+// pair of coordinates.
+func areaRangeToCoordinates(firstCell, lastCell string) ([]int, error) {
+	coordinates := make([]int, 4)
+	var err error
+	coordinates[0], coordinates[1], err = CellNameToCoordinates(firstCell)
+	if err != nil {
+		return coordinates, err
+	}
+	coordinates[2], coordinates[3], err = CellNameToCoordinates(lastCell)
+	return coordinates, err
+}
+
+// sortCoordinates provides a function to correct the coordinate area, such
+// correct C1:B3 to B1:C3.
+func sortCoordinates(coordinates []int) error {
+	if len(coordinates) != 4 {
+		return errors.New("coordinates length must be 4")
+	}
+	if coordinates[2] < coordinates[0] {
+		coordinates[2], coordinates[0] = coordinates[0], coordinates[2]
+	}
+	if coordinates[3] < coordinates[1] {
+		coordinates[3], coordinates[1] = coordinates[1], coordinates[3]
+	}
+	return nil
+}
+
+// coordinatesToAreaRef provides a function to convert a pair of coordinates
+// to area reference.
+func (f *File) coordinatesToAreaRef(coordinates []int) (string, error) {
+	if len(coordinates) != 4 {
+		return "", errors.New("coordinates length must be 4")
+	}
+	firstCell, err := CoordinatesToCellName(coordinates[0], coordinates[1])
+	if err != nil {
+		return "", err
+	}
+	lastCell, err := CoordinatesToCellName(coordinates[2], coordinates[3])
+	if err != nil {
+		return "", err
+	}
+	return firstCell + ":" + lastCell, err
+}
+
+// adjustMergeCells provides a function to update merged cells when inserting
+// or deleting rows or columns.
+func (f *File) adjustMergeCells(xlsx *xlsxWorksheet, dir adjustDirection, num, offset int) error {
+	if xlsx.MergeCells == nil {
+		return nil
+	}
+
+	for i := 0; i < len(xlsx.MergeCells.Cells); i++ {
+		areaData := xlsx.MergeCells.Cells[i]
+		coordinates, err := f.areaRefToCoordinates(areaData.Ref)
+		if err != nil {
+			return err
+		}
+		x1, y1, x2, y2 := coordinates[0], coordinates[1], coordinates[2], coordinates[3]
+		if dir == rows {
+			if y1 == num && y2 == num && offset < 0 {
+				f.deleteMergeCell(xlsx, i)
+				i--
+			}
+			y1 = f.adjustMergeCellsHelper(y1, num, offset)
+			y2 = f.adjustMergeCellsHelper(y2, num, offset)
+		} else {
+			if x1 == num && x2 == num && offset < 0 {
+				f.deleteMergeCell(xlsx, i)
+				i--
+			}
+			x1 = f.adjustMergeCellsHelper(x1, num, offset)
+			x2 = f.adjustMergeCellsHelper(x2, num, offset)
+		}
+		if x1 == x2 && y1 == y2 {
+			f.deleteMergeCell(xlsx, i)
+			i--
+		}
+		if areaData.Ref, err = f.coordinatesToAreaRef([]int{x1, y1, x2, y2}); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+// adjustMergeCellsHelper provides a function for adjusting merge cells to
+// compare and calculate cell axis by the given pivot, operation axis and
+// offset.
+func (f *File) adjustMergeCellsHelper(pivot, num, offset int) int {
+	if pivot >= num {
+		pivot += offset
+		if pivot < 1 {
+			return 1
+		}
+		return pivot
+	}
+	return pivot
+}
+
+// deleteMergeCell provides a function to delete merged cell by given index.
+func (f *File) deleteMergeCell(sheet *xlsxWorksheet, idx int) {
+	if len(sheet.MergeCells.Cells) > idx {
+		sheet.MergeCells.Cells = append(sheet.MergeCells.Cells[:idx], sheet.MergeCells.Cells[idx+1:]...)
+		sheet.MergeCells.Count = len(sheet.MergeCells.Cells)
+	}
+}
+
+// adjustCalcChain provides a function to update the calculation chain when
+// inserting or deleting rows or columns.
+func (f *File) adjustCalcChain(dir adjustDirection, num, offset int) error {
+	if f.CalcChain == nil {
+		return nil
+	}
+	for index, c := range f.CalcChain.C {
+		colNum, rowNum, err := CellNameToCoordinates(c.R)
+		if err != nil {
+			return err
+		}
+		if dir == rows && num <= rowNum {
+			if newRow := rowNum + offset; newRow > 0 {
+				f.CalcChain.C[index].R, _ = CoordinatesToCellName(colNum, newRow)
+			}
+		}
+		if dir == columns && num <= colNum {
+			if newCol := colNum + offset; newCol > 0 {
+				f.CalcChain.C[index].R, _ = CoordinatesToCellName(newCol, rowNum)
+			}
+		}
+	}
+	return nil
+}