Need help to sort index pages using InDesign script

[Veera_IdS]

Hi All,

I am looking for the solution to fix Index pages.

I have an array and need pages sorted as per below example:

var myArray = [5, 6, 7, 43, 45, 65, 66, 77, 98, 99, 100, 123, 155, 166]

output = [5ff, 43, 45, 65f, 77, 98ff, 123, 155, 166]

so logic is if there is page range continue more than 2 thfn "ff" will add and if its just more than one time then "f". I am unable to logic this loop so any help will be appreciated.

Thanks,

Shonky

[Robert at ID-Tasker]

As your array is already sorted - you just need to check if next element is +1 of the current, if it is, then store index of this element, then keep checking - if only +1 - then add "f" to the saved index - if there is more - then add "ff".

[Veera_IdS]

Thanks Robert!

[Manan Joshi · Accepted solution]

Something like the following should work

function convertArray(arr) {
    var i = 0;
    while (i < arr.length) {
        var start = i;
        while (i + 1 < arr.length && arr[i] + 1 === arr[i + 1]) {
            i++;
        }
        var end = i;
        if (end - start > 1) {
            arr[start] = arr[start] + 'ff';
            // Remove all elements in the middle of the sequence
            arr.splice(start + 1, end - start);
            i = start + 1; // Move to the next element after the modified one
        } else if (end - start === 1) {
            arr[start] = arr[start] + 'f';
            // Remove the second element in the sequence
            arr.splice(start + 1, 1);
            i = start + 1; // Move to the next element after the modified one
        } else {
            i++;
        }
    }
    return arr;
}

var arr = [5, 6, 7, 43, 45, 65, 66, 77, 98, 99, 100, 123, 155, 166];
convertArray(arr);
$.writeln(arr);

-Manan

[Veera_IdS]

Thanks Manan!!

[Marc Autret]

Hi all,

For those who use IdExtenso, the module $$.PageRange supports the `f`, `ff` suffixes (reduxPair and reduxMore parameters). Full code here with all options explained:

https://github.com/indiscripts/IdExtenso/blob/master/etc/$$.PageRange.jsxlib#L519

(Note: this algorithm is used in IndexMatic³.)

Best,

Marc