从字符串中提取文本 [英] Extract text from a string
问题描述
如何从字符串中提取程序名称".该字符串将如下所示:
How do I extract the "program name" from a string. The string will look like this :
% O0033(SUB RAD MSD 50R III) G91G1X-6.4Z-2.F500 G3I6.4Z-8.G3I6.4G3R3.2X6.4F500 G91G0Z5.G91G1X-10.4 G3I10.4 G3R5.2X10.4 G90G0Z2.M99%
% O0033(SUB RAD MSD 50R III) G91G1X-6.4Z-2.F500 G3I6.4Z-8. G3I6.4 G3R3.2X6.4F500 G91G0Z5. G91G1X-10.4 G3I10.4 G3R5.2X10.4 G90G0Z2. M99 %
程序名称是 (SUB RAD MSD 50R III).将结果存储在另一个字符串中是可以的.我正在学习 powershell，因此对您的答案的任何解释将不胜感激.
The program name is (SUB RAD MSD 50R III). Storing the result in another string is fine. I'm learning powershell so any explaination of your answers will be appreciated.
推荐答案
以下正则表达式提取括号之间的任何内容:
The following regex extract anything between the parenthesis:
PS> $prog = [regex]::match($s,'\(([^\)]+)\)').Groups[1].Value
PS> $prog
SUB RAD MSD 50R III
Explanation (created with RegexBuddy)
Match the character '(' literally «\(»
Match the regular expression below and capture its match into backreference number 1 «([^\)]+)»
Match any character that is NOT a ) character «[^\)]+»
Between one and unlimited times, as many times as possible, giving back as needed (greedy) «+»
Match the character ')' literally «\)»
检查这些链接:
http://www.regular-expressions.info
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