strings.Split 不能使用换行符切割字符串？

[winterspy]

`package main

import ( "fmt" "github.com/bilibili/gengine/builder" "github.com/bilibili/gengine/context" "github.com/bilibili/gengine/engine" "github.com/sirupsen/logrus" "strings" "time" ) const rule1 = rule "name test" "i can" salience 0 begin if FreeData == ""{ println("Error:data is null") }else{ rows = split(FreeData,"\n") println(rows[1]) } end func main() { dataContext := context.NewDataContext() freeData := total used free shared buff/cache available Mem: 131910844 41687584 24113760 4251248 66109500 84970700 Swap: 0 0 0 //这里可以成功切割出来 fmt.Println(strings.Split(freeData,"\n")[1]) //注入初始化的结构体 dataContext.Add("FreeData", freeData) dataContext.Add("split", strings.Split) dataContext.Add("println", fmt.Println)

//init rule engine
ruleBuilder := builder.NewRuleBuilder(dataContext)

start1 := time.Now().UnixNano()
//构建规则
err := ruleBuilder.BuildRuleFromString(rule1) //string(bs)
end1 := time.Now().UnixNano()

logrus.Infof("rules num:%d, load rules cost time:%d", len(ruleBuilder.Kc.RuleEntities), end1-start1 )

if err != nil{
    logrus.Errorf("err:%s ", err)
}else{
    eng := engine.NewGengine()

    start := time.Now().UnixNano()
    //执行规则
    err := eng.Execute(ruleBuilder,true)

    end := time.Now().UnixNano()
    if err != nil{
        logrus.Errorf("execute rule error: %v", err)
    }
    logrus.Infof("execute rule cost %d ns",end-start)
}

} `

第19行会报错： ERRO[0000] execute rule error: [rule: "name test" executed, error: line 8, column 3, code: println(rows[1]), reflect: slice index out of range

输出： Mem: 131910844 41687584 24113760 4251248 66109500 84970700 INFO[0000] rules num:1, load rules cost time:16206000
ERRO[0000] execute rule error: [rule: "name test" executed, error: line 8, column 3, code: println(rows[1]), reflect: slice index out of range goroutine 1 [running]:

[matianjun1]

这个跟我碰到的问题类似，似乎是不支持转义字符，\n被认为是字符串本身了

如果我规则内部写了 a = "abc\"def" 则在golang环境里打印会出来会是 abc\"def 而不是 abc"def

[uunnii]

这个跟我碰到的问题类似，似乎是不支持转义字符，\n被认为是字符串本身了

如果我规则内部写了 a = "abc\"def" 则在golang环境里打印会出来会是 abc\"def 而不是 abc"def

@matianjun1 现在的语法有点类似 Golang 的 raw string（但不完全一致），我提了一个 PR，把规则内字符串字面量的语法和 Go 里的双引号字符串 (interpreted string literals) 语法对齐了，也许可以解决你的问题