使用go实现删除sql里面的注释和字符串功能(demo)_Golang

`
/**

将字节数组里面注释和字符串，用空格替换 rangeBeg和rangeEnd是数组元素起始位置 左闭右开
*/
func TrimSqlByteArray(sql []byte, rangeBeg int, rangeEnd int) []byte {
sqlLength := rangeEnd - rangeBeg - 1;
//删除注释或者字符串后 用空格填充 必免因删除导致粘连改变sql语义
const chPad = ' '

//结果切片，预分配空间为入参sql长度一半
result := make([] byte, 0, sqlLength / 2)

//本字符类型
var charType int = NORMAL;
for i := rangeBeg; i 

 //本字符类型 预设为普通字符
 charType = NORMAL
 ch := sql[i]

 //下一个字符
 var chNext byte;
 chNext = getCharSafe(sql, rangeEnd, i + 1)

 //非有效sql内容结束位置
 endPos := 0

 if ch == '-' && chNext == '-' {
 	//单行注释
 	charType = LINE
 	//下标移到非有效字符的最后
 	endPos = seekToNext(sql, i + 2, rangeEnd, charType)
 } else if ch == '/' && chNext == '*' {
 	//多行注释
 	charType = MULTI
 	//下标移到非有效字符的最后
 	endPos = seekToNext(sql, i + 2, rangeEnd, charType)
 } else if ch == '\'' {
 	//字符串
 	charType = STRING
 	//下标移到非有效字符的最后
 	endPos = seekToNext(sql, i + 1, rangeEnd, charType)
 }

 //如果字符是非有效字符 则用空格代替 否则保持原样
 if charType == NORMAL {
 	result = append(result, ch)
 } else {
 	result = append(result, chPad)
 	i = endPos - 1
 }

}

return result;
}

/**

rangeEnd是数组边界
*/
func seekToNext(sql []byte, begPos int, rangeEnd int, charType int) int {

result := begPos;

switch charType {
case MULTI:
for ; result 

if ch == '*' && chNext == '/' {
 		result = result + 1;
 		break;
 	}
 }

 break

case LINE:
for ; result 

if ch == '\n' {
 		break;
 	}
 }

 break

case STRING:
for ; result 

//sql字符串里面连续的单引号被认为是' 则不是字符串结束标志
 	if ch == '\'' && chNext == '\'' {
 		result = result + 1;
 		continue;
 	} else if ch == '\'' {
 		break;
 	}
 }

 break

default:
break;
}

result++;

return result;
}