C#正则表达式在包含多种不同语言,Unicode字母的文本中删除不可打印的字符和控制字符 [英] C# regex to remove non - printable characters, and control characters, in a text that has a mix of many different languages, unicode letters
问题描述
我将很感谢您的帮助,因为我不知道要使用哪个字符范围,或者在红宝石中是否找到像[[:cntrl:]]这样的字符类?
i would appreciate your help on this, since i do not know which range of characters to use, or if there is a character class like [[:cntrl:]] that i have found in ruby?
通过不可打印的方式,我的意思是删除所有未打印的字符,即在输出打印输出字符串时显示的字符。请注意,我正在寻找ac#正则表达式,我的代码没有问题
by means of non printable, i mean delete all characters that are not shown in ie output, when one prints the input string. Please note, i look for a c# regex, i do not have a problem with my code
推荐答案
您可以删除所有控件并其他不可打印字符,其中
You may remove all control and other non-printable characters with
s = Regex.Replace(s, @"\p{C}+", string.Empty);
\p {C}
Unicode类别类匹配所有控制字符,甚至包括ASCII表之外的所有控制字符,因为在.NET中,Unicode类别类默认情况下支持Unicode。
The \p{C}
Unicode category class matches all control characters, even those outside the ASCII table because in .NET, Unicode category classes are Unicode-aware by default.
将其分解为子类别
- 要仅匹配基本控制字符,可以使用
\ {p {Cc} +
,请参见其他控件 Unicode类别。它等于[\u0000-\u0008\u000E-\u001F\u007F-\u0084\u0086-\u009F \u0009-\u000D \u0085 ] +
正则表达式。 - 仅匹配 161 其他格式 字符,包括著名的软连字符(
\u00AD
),零宽度空格(\u200B
),零宽度非连接符(\u200C
),零宽度连接符(\u200D
),从左到右标记(\u200E
)和从右到左的标记(\u200F
)使用\p {Cf} +
。包括星体位置代码点的等效项是(?:[\xAD\u0600-\u0605\u061C\u06DD\u070F\u08E2\u180E\u200B-\ u200F\u202A-\u202E\u2060-\u2064\u2066-\u206F\uFEFF\uFFF9-\uFFFB] | \uD804 [\uDCBD\uDCCD] | \uD80D [ DCuDC30-\uDC38] | \uD82F [\uDCA0-\uDCA3] | \uD834 [\uDD73-\uDD7A] | \uDB40 [\uDC01\uDC20-\uDC7F] )+
正则表达式。 - 要匹配 137,468 其他私人使用控制代码点 ,您可以使用
\p {Co} +
,或其等价物(包括星体位置代码点),(?:[\uE000-\uF8FF] | [\uDB80-\uDBBE\uDBC0-\uDBFE] [\uDC00-\ \uDFFF] | [\uDBBF\uDBFF] [\uDC00-\uDFFD])+
。 - 要匹配 2,048 其他代用代码点 包含一些表情符号,则可以使用
\p {Cs} +
或[\uD800-\u DFFF] +
正则表达式。
- To only match basic control characters you may use
\p{Cc}+
, see 65 chars in the Other, Control Unicode category. It is equal to a[\u0000-\u0008\u000E-\u001F\u007F-\u0084\u0086-\u009F \u0009-\u000D \u0085]+
regex. - To only match 161 other format chars including the well-known soft hyphen (
\u00AD
), zero-width space (\u200B
), zero-width non-joiner (\u200C
), zero-width joiner (\u200D
), left-to-right mark (\u200E
) and right-to-left mark (\u200F
) use\p{Cf}+
. The equivalent including astral place code points is a(?:[\xAD\u0600-\u0605\u061C\u06DD\u070F\u08E2\u180E\u200B-\u200F\u202A-\u202E\u2060-\u2064\u2066-\u206F\uFEFF\uFFF9-\uFFFB]|\uD804[\uDCBD\uDCCD]|\uD80D[\uDC30-\uDC38]|\uD82F[\uDCA0-\uDCA3]|\uD834[\uDD73-\uDD7A]|\uDB40[\uDC01\uDC20-\uDC7F])+
regex. - To match 137,468 Other, Private Use control code points you may use
\p{Co}+
, or its equivalent including astral place code points,(?:[\uE000-\uF8FF]|[\uDB80-\uDBBE\uDBC0-\uDBFE][\uDC00-\uDFFF]|[\uDBBF\uDBFF][\uDC00-\uDFFD])+
. - To match 2,048 Other, Surrogate code points that include some emojis, you may use
\p{Cs}+
, or[\uD800-\uDFFF]+
regex.
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