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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,58 @@ | ||
| using System; | ||
| using System.Collections.Generic; | ||
| using System.Linq; | ||
| using System.Text; | ||
| using System.Text.RegularExpressions; | ||
| using System.Threading.Tasks; | ||
|
|
||
| namespace WinRAR_Extractor | ||
| { | ||
| public class HtmlHelper | ||
| { | ||
| /// <summary> | ||
| /// 使用举例： | ||
| /// 获取关键词 GetSingleTagValueByAttr(data, "meta", "name", "Keywords"); data是HTML源代码 | ||
| /// 获取描述 GetSingleTagValueByAttr(data, "meta", "name", "Discription"); | ||
| /// 获取跳转 GetSingleTagValueByAttr(data, "meta", "http-equiv", "refresh"); | ||
| /// </summary> | ||
| /// <param name="inputstring"></param> | ||
| /// <param name="tagName"></param> | ||
| /// <param name="attrname"></param> | ||
| /// <param name="key"></param> | ||
| /// <returns></returns> | ||
| public static string GetSingleTagValueByAttr(string inputstring, string tagName, string attrname, string key) | ||
| { | ||
| //string reg2 = $"(?<=meta name=\"keywords\" content=\").*?(?=\")"; | ||
| string regStr = $"(?<={tagName} {attrname}=\"{key}\" content=\").*?(?=\")"; | ||
| //string key_words = Regex.Match(inputstring, regStr).Value; | ||
|
|
||
| //Regex reg = new Regex("<" + tagName + " [^<>]*>", RegexOptions.IgnoreCase); | ||
| Regex reg = new Regex(regStr, RegexOptions.IgnoreCase); | ||
| MatchCollection matchs = reg.Matches(inputstring); | ||
| string result = string.Empty; | ||
| foreach (Match match in matchs) | ||
| { | ||
| string matchValue = match.Value; | ||
| if (!string.IsNullOrEmpty(matchValue)) | ||
| { | ||
| return matchValue; | ||
| } | ||
| //Regex regValue = new Regex("content=".* "", RegexOptions.IgnoreCase); | ||
| //if (matchValue.ToLower().IndexOf(attrname.ToLower() + "="" + key.ToLower() + """) != -1) | ||
| //{ | ||
| // if (regValue.IsMatch(matchValue)) | ||
| // { | ||
| // result = regValue.Match(matchValue).Value; | ||
| // if (!string.IsNullOrEmpty(result)) | ||
| // { | ||
| // //result = result.Replace("CONTENT=", "").Replace("content=", "").Replace(""", ""); | ||
|
|
||
| // } | ||
| // } | ||
| // return result; | ||
| //} | ||
| } | ||
| return null; | ||
| } | ||
| } | ||
| } |
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