c＃使用ExCSS解析CSS

Question

i search a while ago how to parse css and i found ExCSS https://github.com/TylerBrinks/ExCSS 我前一段时间搜索如何解析CSS并发现ExCSS https://github.com/TylerBrinks/ExCSS

I have a html file. 我有一个html文件。 and i need to get the font style of csFC2BB1D1 我需要获取csFC2BB1D1的字体样式

which is italic 这是italic

in order to read the html. 为了阅读HTML。 i use htmlagility pack. 我使用htmlagility包。 and i use ExCSS to parse the css 我用ExCSS解析CSS

and here is my code 这是我的代码

HtmlDocument doc = new HtmlDocument();
doc.Load(htmlLocation);
var parser = new Parser();
var data = doc.DocumentNode.Descendants("style").FirstOrDefault();
var stylesheet = parser.Parse(data.OuterHtml);
foreach (var item in stylesheet.StyleRules
.Select(r => r.Selector)) {
     Console.WriteLine(item);
}

the output of the loop statement is 循环语句的输出是

style type>.csC67CFA75
.cs3B0A1ABE
.cs6B2A4BAA
.cs7FB5C607
.csB0E2188C
.cs619CFE26
.cs80D9435B
.csE163F6C2
.cs5B41FA1C
.csC4CFBF3A
.csFC2BB1D1
.csC8468922
.cs21FA5D81
.cs95A8AE3D
.csCC736C83
.cs116BBDE0
.cs137E84BF
.cs6E4FDAEF
.cs92C3DA2B
.cs794D75A2
.csE6E4F8C4

and why does it also output the text style type> and not only the selector 以及为什么它还输出文本style type> ，而不仅是selector

and this is my html document 这是我的html文件

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>
        </title>
        <style type="text/css">
            .csC67CFA75{text-align:center;text-indent:36pt;margin:0pt 0pt 0pt 0pt}
            .cs3B0A1ABE{color:#000000;background-color:transparent;font-family:Times New Roman;font-size:14pt;font-weight:normal;font-style:normal;}
            .cs6B2A4BAA{color:#000000;background-color:transparent;font-family:Times New Roman;font-size:6.5pt;font-weight:normal;font-style:normal;}
            .cs7FB5C607{text-align:justify;text-indent:36pt;margin:0pt 0pt 0pt 0pt}
            .csB0E2188C{color:#000000;background-color:transparent;font-family:Times New Roman;font-size:14pt;font-weight:bold;font-style:normal;}
            .cs619CFE26{color:#000000;background-color:transparent;font-family:Times New Roman;font-size:14pt;font-weight:normal;font-style:italic;}
            .cs80D9435B{text-align:justify;text-indent:0pt;margin:0pt 0pt 0pt 0pt}
            .csE163F6C2{color:#000000;background-color:transparent;font-family:Times New Roman;font-size:14pt;font-weight:bold;font-style:italic;}
            .cs5B41FA1C{color:#000000;background-color:transparent;font-family:Times New Roman;font-size:9pt;font-weight:normal;font-style:normal;}
            .csC4CFBF3A{color:#000000;background-color:transparent;font-family:Courier New;font-size:9pt;font-weight:normal;font-style:normal;}
            .csFC2BB1D1{color:#000000;background-color:transparent;font-family:Times New Roman;font-size:20pt;font-weight:normal;font-style:italic;}
            .csC8468922{color:#000000;background-color:transparent;font-family:Times New Roman;font-size:11pt;font-weight:normal;font-style:italic;}
            .cs21FA5D81{text-align:right;text-indent:36pt;margin:0pt 0pt 0pt 0pt}
            .cs95A8AE3D{color:#FF0000;background-color:transparent;font-family:Times New Roman;font-size:14pt;font-weight:normal;font-style:normal;}
            .csCC736C83{color:#000000;background-color:transparent;font-family:Times New Roman;font-size:9pt;font-weight:normal;font-style:italic;}
            .cs116BBDE0{color:#000000;background-color:transparent;font-family:Times New Roman;font-size:7pt;font-weight:normal;font-style:normal;}
            .cs137E84BF{text-align:justify;text-indent:0pt;margin:0pt 36pt 0pt 36pt}
            .cs6E4FDAEF{color:#000000;background-color:#FFFF00;font-family:Times New Roman;font-size:14pt;font-weight:normal;font-style:normal;}
            .cs92C3DA2B{color:#000000;background-color:transparent;font-family:Times New Roman;font-size:14pt;font-weight:normal;font-style:normal;text-decoration: underline;}
            .cs794D75A2{color:#FFFF00;background-color:transparent;font-family:Times New Roman;font-size:9pt;font-weight:normal;font-style:normal;}
            .csE6E4F8C4{color:#000000;background-color:transparent;font-family:Times New Roman;font-size:8pt;font-weight:normal;font-style:normal;}
        </style>
    </head>
    <body>
</body>
</html>

Answer 1

Because you're passing, not only the CSS but also the parent style tag to the parser. 因为要传递，所以解析器不仅传递CSS，而且传递父style标签。 You should've pass just the content of style by using InnerHtml instead of OuterHtml . 你应该已经通过的只是内容style使用InnerHtml代替OuterHtml 。 Then you can do as follows to get the target font-style : 然后，您可以按照以下步骤获取目标字体样式：

// find among the CSS rules
var fontStyle = stylesheet.StyleRules
                  // rule for class `csFC2BB1D1`
                  .Where(r => r.Selector.ToString() == ".csFC2BB1D1")
                  // then select the value for `font-style`
                  .Select(o => o.Declarations.First(p => p.Name == "font-style").Term.ToString())
                  .First();

I prefer query syntax for in this scenario though : 我在这种情况下更喜欢查询语法：

var query = from rule in stylesheet.StyleRules
            where rule.Selector.ToString() == ".csFC2BB1D1"
            from declaration in rule.Declarations
            where declaration.Name == "font-style"
            select declaration.Term.ToString();

var fontStyle = query.FirstOrDefault();

dotnetfiddle demo

c＃使用ExCSS解析CSS

问题描述

1 个解决方案

解决方案1
1 已采纳 2017-03-22 08:26:00

c＃使用ExCSS解析CSS

问题描述

1 个解决方案

解决方案1 1 已采纳 2017-03-22 08:26:00

解决方案1
1 已采纳 2017-03-22 08:26:00