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VisualizaçõesRegEx to match whole line after nth occurrence of a string
Long time lurker, first time poster! Thanks to anyone in advance that can help.
I'm using Node.JS and Electron to make a little desktop app that manages the values in a game file (which is from a custom file type, basically a glorified INI file). With the idea of letting people customise the file in a nice UI as opposed to combing through hundreds of lines of code. Below is a sample from the file:
setting $Low
prop $Config A_STRING_HERE "5, 10, 15, 20"
setting $Medium
prop $Config A_STRING_HERE "10, 20, 40, 80"
setting $High
prop $Config A_STRING_HERE "20, 40, 80, 160"
setting $VeryHigh
prop $Config A_STRING_HERE "40, 80, 160, 320"
How would I go about matching, for example, the "setting $High" (3rd) occurrence containing "A_STRING_HERE" until the end of the line. I'm hoping to match just:
A_STRING_HERE "20, 40, 80, 160".
The values are dynamic and will change a lot, so matching the line with the values isn't necessarily an option.
\A_STRING_HERE.+\gwill match all the occurrences to the end of the line.\A_STRING_HERE.+\will match the first occurrence to the end of the line.\A_STRING_HERE.+\??????will match the 3rd occurrence to end of the line?
Thanks again and all the best!
1 Respostas
Responde à pergunta0
You can probably try this regex:
(?<=setting \$High\n\s*?prop \$Config )A_STRING_HERE.*
Explantion
(?<=)- Represents positive lookbehind.setting \$High\n\s*?prop \$Config- The text that separates this match with other matches. You can probably omitsettingpart to make it more concise.\n- Represents new line.\s*?- Lazily matches 0 or more white spaces. You can adjust it according to your need.
.*- Matches everything except\n. You can be specific here as well if you want to include numbers only.\g- Please note only global flag is used.
You can find the implementation of the above regex in here.
Image Explanation:
const regex = /(?<=setting \$High\n\s*?prop \$Config )A_STRING_HERE.*/g;
// Alternative syntax using RegExp constructor
// const regex = new RegExp('(?<=setting \\$High\\n\\s*?prop \\$Config )A_STRING_HERE.*', 'g')
const str = `setting \$Low
prop \$Config A_STRING_HERE "5, 10, 15, 20"
setting \$Medium
prop \$Config A_STRING_HERE "10, 20, 40, 80"
setting \$High
prop \$Config A_STRING_HERE "20, 40, 80, 160"
setting \$VeryHigh
prop \$Config A_STRING_HERE "40, 80, 160, 320"`;
console.log(str.match(regex)[0]);