Update AppleScript + Ruby script to work in High Sierra or Mojave

I have a few very useful scripts created by some extremely helpful members of this community.

Some of them utilise Ruby scripts, which has unfortunately changed since OSX 10.7. I've attempted to change the paths to the new ruby location (from version 2.0 to 2.3) but it still fails.

This one takes a multiple page PDF, searches for a text string on each page, and splits the file into individual files each named with the results of the string search.

This script works great in 10.7.5 but I can't get it to run in 10.13.6

Could someone help me to get Ruby working again?

_main()

on _main()

script o

property aa : choose file with prompt ("Choose PDF Files.") of type {"com.adobe.pdf"} ¬

default location (path to desktop) with multiple selections allowed

set my aa's beginning to choose folder with prompt ("Choose Destination Folder.") ¬

default location (path to desktop)

set args to ""

repeat with a in my aa

set args to args & a's POSIX path's quoted form & space

end repeat

considering numeric strings

if (system info)'s system version < "10.9" then

set ruby to "/usr/bin/ruby"

else

set ruby to "/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/bin/ruby"

end if

end considering

do shell script ruby & " <<'EOF' - " & args & "

require 'osx/cocoa'

include OSX

require_framework 'PDFKit'

outdir = ARGV.shift.chomp('/')

ARGV.select {|f| f =~ /\\.pdf$/i }.each do |f|

    url = NSURL.fileURLWithPath(f)

    doc = PDFDocument.alloc.initWithURL(url)

    path = doc.documentURL.path

    pcnt = doc.pageCount

    (0 .. (pcnt - 1)).each do |i|

        page = doc.pageAtIndex(i)

       page.string.to_s =~ /umber: \\S*/

        name = $&

        unless name

            puts \"no matching string in page #{i + 1} of #{path}\"

            next # ignore this page

        end

newname = name[7..-1]

        doc1 = PDFDocument.alloc.initWithData(page.dataRepresentation) # doc for this page

        unless doc1.writeToFile(\"#{outdir}/#{newname}.pdf\")

            puts \"failed to save page #{i + 1} of #{path}\"

        end

    end

end

EOF"

end script

tell o to run

end _main