Smart Braces

Posted by agiletortoise, Last update 30 days ago

If a selection is present, wrap the text in braces. If no selection, scan text for last braces and close it if last one was an open braces, or insert open braces if not.

Steps

  • script

    // If a selection is present, wrap the text.
    //
    // If no selection, scan text for last open or close and
    // close it if last one was an open, or
    // insert open if not.
    
    const open = "{";
    const close = "}";
    
    const range = editor.getSelectedRange();
    const priorText = editor.getTextInRange(0, range[0]);
    
    if (range[1] > 0) { 
     //text selected, wrap it!
     editor.setSelectedText(open + editor.getSelectedText() + close);
     editor.setSelectedRange(range[0] + range[1] + open.length + close.length, 0);
    }
    else {
     // no selection, find last 
     const lastOpen = priorText.lastIndexOf(open);
     const lastClose = priorText.lastIndexOf(close);
     
     if (lastOpen == -1 || lastClose > lastOpen) { // no close, use open
       editor.setSelectedText(open);
       editor.setSelectedRange(range[0]+open.length, 0);
     }
     else { // close last open
       editor.setSelectedText(close);
       editor.setSelectedRange(range[0]+close.length, 0);
     }
    }
    

Options

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