eta_index_lib/services/base_from_calculate.go

package services

import (
	"strings"
)

// CheckFormula 检测计算公式是否异常
func CheckFormula(formula string) map[string]string {
	mathFormula := []string{"MAX", "MIN", "ABS", "ACOS", "ASIN", "CEIL", "MOD", "POW", "ROUND", "SIGN", "SIN", "TAN", "LOG10", "LOG2", "LOG", "LN"}

	str := strings.ToUpper(formula)
	for _, v := range mathFormula {
		str = strings.Replace(str, v, "", -1)
	}
	str = strings.Replace(str, "(", "", -1)
	str = strings.Replace(str, ")", "", -1)

	byteMap := make(map[string]string)
	for i := 0; i < len(str); i++ {
		byteInt := str[i]
		if byteInt >= 65 && byteInt <= 90 {
			byteStr := string(byteInt)
			if _, ok := byteMap[byteStr]; !ok {
				byteMap[byteStr] = byteStr
			}
		}
	}
	return byteMap
}