检测-补全 html代码

#region 补全HTML代码    class TagsList    {

        private ArrayList data;        public int Size        {            get            {                return data.Count;            }        }

        public TagsList()        {            data = new ArrayList();        }

        public void add(String str)        {            data.Add(str);        }

        public string get(int index)        {            if (index < data.Count)                return (string)data[index];            else                return null;        }

        public bool remove(string str)        {            if (data.IndexOf(str) == -1) return false;            data.Remove(str);            return true;        }

        public void remove(int index)        {            data.RemoveAt(index);        }    }    public class TagsChecker    {        public static bool check(string str)        {            TagsList[] unclosedTags = getUnclosedTags(str);            if (unclosedTags[0].Size != 0)            {                return false;            }            for (int i = 0; i < unclosedTags[1].Size; i++)            {                if (unclosedTags[1].get(i) != null)                    return false;            }            return true;        }

        public static string fix(String str)        {            StringBuilder fixeds = new StringBuilder(); // 存放修复后的字符串            TagsList[] unclosedTags = getUnclosedTags(str);            // 生成新字符串            for (int i = unclosedTags[0].Size - 1; i > -1; i--)            {                fixeds.Append("<" + unclosedTags[0].get(i) + ">");            }            fixeds.Append(str);            for (int i = unclosedTags[1].Size - 1; i > -1; i--)            {                String s = null;                if ((s = unclosedTags[1].get(i)) != null)                {                    fixeds.Append("</" + s + ">");                }            }            return fixeds.ToString();        }

        private static TagsList[] getUnclosedTags(String str)        {

            StringBuilder temp = new StringBuilder(); // 存放标签            TagsList[] unclosedTags = new TagsList[2];            unclosedTags[0] = new TagsList(); // 前不闭合，如有</div>而前面没有<div>            unclosedTags[1] = new TagsList(); // 后不闭合，如有<div>而后面没有</div>            bool flag = false; // 记录双引号"或单引号'            char currentJump = ' '; // 记录需要跳过'自动判断补全html标签避免页面板式乱 - 沧海 - 美丽的错误'还是"自动判断补全html标签避免页面板式乱 - 沧海 - 美丽的错误"            char current = ' ', last = ' '; // 当前 & 上一个            // 开始判断            for (int i = 0; i < str.Length; )            {                current = str[i++]; // 读取一个字符                if (current == '"' || current == '/'')                {                    flag = flag ? false : true; // 若为引号，flag翻转                    currentJump = current;                    if (flag)                    {                        while (i < str.Length && str[i++] != currentJump) ; // 跳过引号之间的部分                        flag = false;                    }                }                else if (current == '<')                {                    // 开始提取标签                    current = str[i++];                    if (current == '/')                    {                        // 标签的闭合部分，如</div>                        current = str[i++];                        // 读取标签                        while (i < str.Length && current != '>')                        {                            temp.Append(current);                            current = str[i++];                        }                        // 从tags_bottom移除一个闭合的标签                        if (!unclosedTags[1].remove(temp.ToString()))                        { // 若移除失败，说明前面没有需要闭合的标签                            unclosedTags[0].add(temp.ToString()); // 此标签需要前闭合                        }                        temp.Remove(0, temp.Length); // 清空temp                    }                    else                    { // 标签的前部分，如<div>                        last = current;                        while (i < str.Length && current != ' ' && current != ' ' && current != '>')                        {                            temp.Append(current);                            last = current;                            current = str[i++];                        }

                        // 已经读取到标签，跳过其他内容，如<div id=test>跳过id=test                        while (i < str.Length && current != '>')                        {                            last = current;                            current = str[i++];                            if (current == '"' || current == '/'')                            { // 判断双引号                                flag = flag ? false : true;                                currentJump = current;                                if (flag)                                { // 若引号不闭合，跳过到下一个引号之间的内容                                    while (i < str.Length && str[i++] != currentJump) ;                                    current = str[i++];                                    flag = false;                                }                            }                        }                        if (last != '/' && current == '>') // 判断这种类型：<TagName />                            unclosedTags[1].add(temp.ToString());                        temp.Remove(0, temp.Length);                    }                }            }            return unclosedTags;        }    }    #endregion