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xlsx.go
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xlsx.go
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package xlsx
import (
"github.com/XC-Zero/yinwan/pkg/utils/errs"
"os"
"reflect"
"strconv"
//"github.com/XC-Zero/common/errs"
"github.com/pkg/errors"
"github.com/tealeg/xlsx"
)
// ReadSheetRow 从xlsx文件的制定Sheet中按行读取
// fun 是对每一行数据特殊处理的函数
func ReadSheetRow(path, sheetName string, fun func(row *xlsx.Row) (interface{}, error)) (dataList []interface{}, err error) {
xlFile, err := xlsx.OpenFile(path)
if err != nil {
return nil, errors.New("Read xlsx file failed ! ")
}
sheet := xlFile.Sheet[sheetName]
length := sheet.MaxRow
errList := make([]error, 0)
for i := 0; i < length; i++ {
row := sheet.Row(i)
data, err := fun(row)
if err != nil {
errList = append(errList, err)
panic(err)
}
dataList = append(dataList, data)
}
return dataList, errs.ErrorListToError(errList)
}
// SaveXlsx 保存处理的文档,会覆盖源文档
func SaveXlsx(xlsxFile *xlsx.File, path string) error {
err := DeleteFileIfExist(path)
if err != nil {
return err
}
err = xlsxFile.Save(path)
if err != nil {
return err
}
return nil
}
// AddDataToNewSheet 添加数据到新的sheet中
func AddDataToNewSheet(xlsxFile *xlsx.File, sheetName string, dataList []interface{}, fun func(data *interface{})) error {
println("+++++++++ Start add data to sheet+++++++++")
if dataList == nil {
return errors.New("DataList is empty ! ")
}
var sheet *xlsx.Sheet
sheet, err := xlsxFile.AddSheet(sheetName)
if err != nil {
return err
}
//AddColumnTitle(reflect.ValueOf(dataList).Field(0).Elem(), sheet)
if len(dataList) == 0 {
return nil
}
for i := range dataList {
data := dataList[i]
row := sheet.AddRow()
if fun != nil {
fun(&data)
}
TransferDataToRow(data, row)
}
return nil
}
// AddColumnTitle 通过tag添加首行
func AddColumnTitle(structModel interface{}, sheet *xlsx.Sheet) {
objValue := reflect.ValueOf(structModel)
row := sheet.AddRow()
for i := 0; i < objValue.NumField(); i++ {
fieldInfo := objValue.Type().Field(i)
tag := fieldInfo.Tag
name := tag.Get("json")
cell := row.AddCell()
cell.SetString(name)
}
}
// TransferDataToRow 转换结构体类型数据成一行数据
func TransferDataToRow(data interface{}, row *xlsx.Row) {
objValue := reflect.ValueOf(data)
objType := reflect.TypeOf(data)
for i := 0; i < objValue.NumField(); i++ {
cell := row.AddCell()
str := TransferInterfaceToString(objType.Field(i), objValue.Field(i).Interface())
cell.SetString(str)
}
}
// PathExists 文件是否存在
func PathExists(path string) (bool, error) {
_, err := os.Stat(path)
if err == nil {
return true, nil
}
if os.IsNotExist(err) {
return false, nil
}
return false, err
}
// DeleteFileIfExist 删除文件
func DeleteFileIfExist(path string) error {
flag, err := PathExists(path)
if err != nil {
return err
}
if flag {
err := os.Remove(path)
if err != nil {
return err
}
}
return nil
}
// TransferInterfaceToString 将interface转换为String类型
// 目前只支持 int,float,string,和上述的指针类型
func TransferInterfaceToString(structField reflect.StructField, data interface{}) string {
var (
float32Ptr *float32
float64Ptr *float64
intPtr *int
int8Ptr *int8
int16Ptr *int16
int32Ptr *int32
int64Ptr *int64
stringPtr *string
)
switch structField.Type {
case reflect.TypeOf(float64Ptr):
d := data.(*float64)
if d == nil {
return ""
} else {
return strconv.FormatFloat(*d, 'f', 6, 64)
}
case reflect.TypeOf(float32Ptr):
d := data.(*float32)
if d == nil {
return ""
} else {
return strconv.FormatFloat(float64(*d), 'f', 6, 32)
}
case reflect.TypeOf(float32(1)):
return strconv.FormatFloat(float64(data.(float32)), 'f', 6, 32)
case reflect.TypeOf(float64(1)):
return strconv.FormatFloat(data.(float64), 'f', 6, 64)
case reflect.TypeOf(intPtr):
d := data.(*int)
if d == nil {
return ""
} else {
return strconv.Itoa(*d)
}
case reflect.TypeOf(int8Ptr):
d := data.(*int)
if d == nil {
return ""
} else {
return strconv.Itoa(*d)
}
case reflect.TypeOf(int16Ptr):
d := data.(*int)
if d == nil {
return ""
} else {
return strconv.Itoa(*d)
}
case reflect.TypeOf(int32Ptr):
d := data.(*int)
if d == nil {
return ""
} else {
return strconv.Itoa(*d)
}
case reflect.TypeOf(int64Ptr):
d := data.(*int)
if d == nil {
return ""
} else {
return strconv.Itoa(*d)
}
case reflect.TypeOf(1):
return strconv.Itoa(data.(int))
case reflect.TypeOf(int8(1)):
return strconv.Itoa(int(data.(int8)))
case reflect.TypeOf(int16(1)):
return strconv.Itoa(int(data.(int16)))
case reflect.TypeOf(int32(1)):
return strconv.Itoa(int(data.(int32)))
case reflect.TypeOf(int64(1)):
return strconv.Itoa(int(data.(int64)))
case reflect.TypeOf(stringPtr):
d := data.(*string)
if d == nil {
return ""
} else {
return *d
}
case reflect.TypeOf(""):
return data.(string)
default:
return ""
}
}