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|
package templatesService
import (
"errors"
"fmt"
"github.com/Knetic/govaluate"
"regexp"
"strings"
)
var globalFunctions = map[string]govaluate.ExpressionFunction{
"arrays_overlap_count": func(arguments ...interface{}) (interface{}, error) {
fmt.Println("arrays_overlap_count args:", arguments)
containsType := arguments[0].(string)
var count float64
switch containsType {
case "int":
data := arguments[1].([]int)
target := arguments[2].([]int)
if len(target) == 0 {
return float64(0), nil
}
if len(data) == 0 {
return float64(0), nil
}
for _, each := range data {
for _, each1 := range target {
if each == each1 {
count++
}
}
}
return count, nil
case "int64":
data := arguments[1].([]int64)
target := arguments[2].([]int64)
if len(target) == 0 {
return float64(0), nil
}
if len(data) == 0 {
return float64(0), nil
}
for _, each := range data {
for _, each1 := range target {
if each == each1 {
count++
}
}
}
return count, nil
case "float64":
data := arguments[1].([]float64)
target := arguments[2].([]float64)
if len(target) == 0 {
return float64(0), nil
}
if len(data) == 0 {
return float64(0), nil
}
for _, each := range data {
for _, each1 := range target {
if each == each1 {
count++
}
}
}
return count, nil
}
return float64(0), nil
},
"arrays_bit_in": func(arguments ...interface{}) (interface{}, error) {
fmt.Println("arrays_bit_in args:", arguments)
containsType := arguments[0].(string)
switch containsType {
case "int":
data := arguments[1].([]int)
index := int(arguments[2].(float64))
target := arguments[3].([]int)
if len(target) == 0 && len(data) == 0 {
return false, nil
}
if len(data) == 0 {
return false, nil
}
if len(target) == 0 {
return false, nil
}
if len(data) > index {
for _, d := range target {
if data[index] == d {
return true, nil
}
}
}
return false, nil
}
return false, nil
},
"arrays_equals": func(arguments ...interface{}) (interface{}, error) {
fmt.Println("arrays_equals args:", arguments)
containsType := arguments[0].(string)
switch containsType {
case "int":
data := arguments[1].([]int)
target := arguments[2].([]int)
if len(target) == 0 && len(data) == 0 {
return false, nil
}
if len(data) == 0 {
return false, nil
}
if len(target) == 0 {
return false, nil
}
if len(data) == len(target) {
for i, each := range data {
if target[i] == each {
continue
}
return false, nil
}
return true, nil
}
return false, nil
case "int64":
data := arguments[1].([]int64)
target := arguments[2].([]int64)
if len(target) == 0 && len(data) == 0 {
return false, nil
}
if len(data) == 0 {
return false, nil
}
if len(target) == 0 {
return false, nil
}
if len(data) == len(target) {
for i, each := range data {
if target[i] == each {
continue
}
}
return true, nil
}
return false, nil
case "float64":
data := arguments[1].([]float64)
target := arguments[2].([]float64)
if len(target) == 0 && len(data) == 0 {
return false, nil
}
if len(data) == 0 {
return false, nil
}
if len(target) == 0 {
return false, nil
}
if len(data) == len(target) {
for i, each := range data {
if target[i] == each {
continue
}
}
return true, nil
}
return false, nil
}
return false, nil
},
"arrays_overlap": func(arguments ...interface{}) (interface{}, error) {
fmt.Println("arrays_overlap args:", arguments)
containsType := arguments[0].(string)
var count int
switch containsType {
case "int":
data := arguments[1].([]int)
target := arguments[2].([]int)
if len(target) == 0 {
return true, nil
}
if len(data) == 0 {
return true, nil
}
for _, each := range data {
for _, each1 := range target {
if each == each1 {
count++
}
}
}
return count > 0, nil
case "int64":
data := arguments[1].([]int64)
target := arguments[2].([]int64)
if len(target) == 0 {
return true, nil
}
if len(data) == 0 {
return true, nil
}
for _, each := range data {
for _, each1 := range target {
if each == each1 {
count++
}
}
}
return count > 0, nil
case "float64":
data := arguments[1].([]float64)
target := arguments[2].([]float64)
if len(target) == 0 {
return true, nil
}
if len(data) == 0 {
return true, nil
}
for _, each := range data {
for _, each1 := range target {
if each == each1 {
count++
}
}
}
return count > 0, nil
}
return false, nil
},
"str_contains": func(arguments ...interface{}) (interface{}, error) {
fmt.Println("str_contains args:", arguments)
containsType := arguments[0].(string)
if containsType == "string" {
data := arguments[1].(string)
target := arguments[2].(string)
return strings.Contains(data, target), nil
}
return false, nil
},
"str_len": func(args ...interface{}) (interface{}, error) {
length := len(args[0].(string))
return (float64)(length), nil
},
}
const ExpressionStr = "exp"
func expressionParse(str string, dataMap map[string]interface{}) (bool, int, error) {
if len(str) == 0 {
return true, 0, nil
}
re := regexp.MustCompile(ExpressionStr + `\{(.*?)\}`)
matches := re.FindAllStringSubmatch(str, -1)
for _, match := range matches {
fmt.Println("matchSimpleExp:", match)
parameter := match[1]
var result bool
fmt.Println("params:", parameter)
ok, err := matchFuncExp(parameter, dataMap, globalFunctions)
if err != nil {
fmt.Println(err)
result = true
}
result = ok
str = strings.ReplaceAll(str, fmt.Sprintf(ExpressionStr+"{%s}", parameter), fmt.Sprintf("%t", result))
fmt.Println("express:", str)
}
matchCount := strings.Count(str, "true")
str = strings.ReplaceAll(str, "and", "&&")
str = strings.ReplaceAll(str, "or", "||")
totalRes, err := matchSimpleExp(str, dataMap)
fmt.Println("totalResult:", totalRes, err)
return totalRes, matchCount, err
}
func matchSimpleExp(exp string, data map[string]interface{}) (bool, error) {
if len(exp) == 0 {
return true, nil
}
expression, err := govaluate.NewEvaluableExpression(exp)
if err != nil {
return false, err
}
result, err := expression.Evaluate(data)
if err != nil {
return false, err
}
resultBool, ok := result.(bool)
if ok {
fmt.Println("matchSimpleExp expression :", exp, data, resultBool)
return resultBool, nil
}
return false, errors.New("go Expression matchSimpleExp error")
}
func matchFuncExp(expStr string, data map[string]interface{}, funcs map[string]govaluate.ExpressionFunction) (bool, error) {
if len(expStr) == 0 {
return true, nil
}
fmt.Println("expStr:", expStr)
expression, _ := govaluate.NewEvaluableExpressionWithFunctions(expStr, funcs)
result, err := expression.Evaluate(data)
if err != nil {
return false, err
}
resultBool, ok := result.(bool)
if ok {
fmt.Println("matchSimpleExp expression:", expStr, data, resultBool)
return resultBool, nil
}
return false, errors.New("go matchFuncExp matchSimpleExp error")
}
|
