helper/map.go

package helper

import (
	"errors"
	"net/url"
	"sort"
	"strings"
)

func MergeStringMap(x, y map[string]string) map[string]string {

	n := make(map[string]string)
	for i, v := range x {
		for j, w := range y {
			if i == j {
				n[i] = w

			} else {
				if _, ok := n[i]; !ok {
					n[i] = v
				}
				if _, ok := n[j]; !ok {
					n[j] = w
				}
			}
		}
	}

	return n

}

/**
 * 转换为map string数组
 * 2021/1/5
 * gz
 */
func ToMapStringArray(x interface{}) ([]map[string]string, error) {
	list, ok := x.([]interface{})
	if !ok {
		return []map[string]string{}, errors.New("type error")
	}

	if len(list) < 1 {
		return []map[string]string{}, nil
	}
	var ret []map[string]string = make([]map[string]string, len(list))
	var tmp map[string]interface{}
	var map_tmp map[string]string
	var err error

	for key, item := range list {
		if tmp, ok = item.(map[string]interface{}); ok {
			map_tmp = make(map[string]string)
			for k, v := range tmp {
				map_tmp[k] = ToStr(v)
			}
			ret[key] = map_tmp
		} else {
			err = errors.New("data type error")
			break
		}
	}

	return ret, err
}

/**
 * 将map[string]string数组转成map[string]interface数组
 */
func MapStringToInterfaceArr(src []map[string]string) []map[string]interface{} {
	var dest []map[string]interface{}

	for i := range src {
		m := src[i]
		n := make(map[string]interface{})
		for k, v := range m {
			n[k] = interface{}(v)
		}
		dest = append(dest, n)
	}

	return dest
}

/**
 * 将map[string]string转成map[string]interface
 */
func MapStringToInterface(src map[string]string) map[string]interface{} {
	target := make(map[string]interface{})
	for k, v := range src {
		target[k] = interface{}(v)
	}

	return target
}

//将interface转成map[string]interface
func InterfaceToMapInterface(data interface{}) (map[string]interface{}, error) {
	dataJson, err := json.Marshal(data)

	if err != nil {
		return nil, err
	}

	var returnData map[string]interface{}
	err = json.Unmarshal(dataJson, &returnData)

	return returnData, nil
}

//将interface转成map[string]string
func InterfaceToMapString(data interface{}) (map[string]string, error) {
	dataJson, err := json.Marshal(data)

	if err != nil {
		return nil, err
	}

	var returnData map[string]string
	err = json.Unmarshal(dataJson, &returnData)

	return returnData, nil
}

//将interface转成[]map[string]interface
func InterfaceToMapInterfaceArr(data interface{}) ([]map[string]interface{}, error) {
	dataJson, err := json.Marshal(data)

	if err != nil {
		return nil, err
	}

	var returnData []map[string]interface{}
	err = json.Unmarshal(dataJson, &returnData)

	return returnData, nil
}

//将interface转成[]map[string]string
func InterfaceToMapStringArr(data interface{}) ([]map[string]string, error) {
	dataJson, err := json.Marshal(data)

	if err != nil {
		return nil, err
	}

	var returnData []map[string]string
	err = json.Unmarshal(dataJson, &returnData)

	return returnData, nil
}

/**
 * 对map进行字典序排序
 * @param data map[string]string
 * @2020/12/28
 * @linsen
 */
func HttpBuildQuery(data map[string]string) string {

	keySlice := []string{}

	for k, _ := range data {
		keySlice = append(keySlice, k)
	}
	sort.Strings(keySlice) //排序字符串

	var query string

	for _, value := range keySlice {
		if value != "" && data[value] != "" {
			query += StringJoin(value, "=", data[value], "&")
		}
	}

	return strings.Trim(query, "&")
}

/**
 * 对map字典按照顺序进行拼接，并且把每个value进行类urlencode
 * @param data map[string]string
 * @2021/10/14
 * @wyy
 */
func HttpBuildStringQuery(data map[string]string) string {

	keySlice := []string{}

	for k, _ := range data {
		keySlice = append(keySlice, k)
	}
	// sort.Strings(keySlice) //排序字符串

	var query string

	for _, value := range keySlice {
		if value != "" && data[value] != "" {
			query += StringJoin(value, "=", url.QueryEscape(data[value]), "&")
		}
	}

	return strings.Trim(query, "&")
}

/**
 * 对map切片 按值进行顺序
 * @param order desc/asc val_type float64/string MapDate []map[string]interface{}
 * @2022/10/27
 * @lo
 */
func MapSort(order, val, val_type string, MapDate []map[string]interface{}) ([]map[string]interface{}, error) {
	type KVPair struct {
		Key         int
		Val_float64 float64
		val_string  string
	}
	res := []map[string]interface{}{}
	if order != "desc" && order != "asc" {
		return res, errors.New("order parameter err")
	}
	if val_type != "float64" && val_type != "string" {
		return res, errors.New("val_type parameter err")
	}
	if val == "" {
		return res, errors.New("val parameter err")
	}
	if len(MapDate) < 1 {
		return res, errors.New("MapDate parameter err")
	}
	tmpList := []KVPair{}
	if val_type == "string" {
		for k, item := range MapDate {
			tmpList = append(tmpList, KVPair{Key: k, val_string: ToStr(item[val])})
		}
		if order == "desc" {
			sort.Slice(tmpList, func(i, j int) bool {
				return tmpList[i].val_string > tmpList[j].val_string // 降序
			})
		} else {
			sort.Slice(tmpList, func(i, j int) bool {
				return tmpList[i].val_string < tmpList[j].val_string // 升序
			})
		}
	} else {
		for k, item := range MapDate {
			float64_val, _ := ToFloat64(item[val])
			tmpList = append(tmpList, KVPair{Key: k, Val_float64: float64_val})
		}
		if order == "desc" {
			sort.Slice(tmpList, func(i, j int) bool {
				return tmpList[i].Val_float64 > tmpList[j].Val_float64 // 降序
			})
		} else {
			sort.Slice(tmpList, func(i, j int) bool {
				return tmpList[i].Val_float64 < tmpList[j].Val_float64 // 升序
			})
		}
	}
	for _, tmp := range tmpList {
		res = append(res, MapDate[tmp.Key])
	}
	return res, nil
}
func MapPage(pageNum, pageSize int, MapDate []map[string]interface{}) []map[string]interface{} {
	stat := (pageNum - 1) * pageSize
	end := stat + pageSize
	count := len(MapDate)
	if stat >= count {
		return []map[string]interface{}{}
	}
	if end >= count {
		end = count
	}
	if stat < 0 || end < 0 {
		return []map[string]interface{}{}
	}
	return MapDate[stat:end]
}