splitting up text with a regular expression in google app script (documentApp) with findText

问题

In a google doc (not a spreadsheet) I have a wall of text that looks like

 °foo bar header°foo bar bat paragraph°and another paragraph°and yet an other paragraph°and so on

and I want to split up the text into paragraphs.

So I would like to get the text between the ° chars with help of a regexp. I would like to use

     var rangeElement = body.findText("°([^°]*)°");

but that regexp makes google docs go "Service unavailable: Docs". Using a regexp like "°.?°" alleviates that problem, but does not isolate the text I want.

What is a regexp that would work? How can I proceed to process the substring from within the ( and )?

回答1:

To get all (multiple) matches, you can leverage the JavaScript RegExp witha g (global) modifier.

var rx = /°([^°]*)/g;
while (m=rx.exec(doc.getBody().getText())) { 
    Logger.log("Matched: " + m[1]);
}

The /°([^°]*)/g is a regex literal notation (mind there should be no quotes around it), where / are regex delimiters, °([^°]*) is the pattern matching ° symbol and then capturing into Group 1 any 0 or more chars other than ° (([^°]*)) any number of times (g).

To actually match all the occurrences, you need to call RegExp#exec multiple times and grab Group 1 value (m[1]).

来源：https://stackoverflow.com/questions/44875634/splitting-up-text-with-a-regular-expression-in-google-app-script-documentapp-w