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Comment parsing example

This page applies to Harlequin v13.1r0 and later; both Harlequin Core and Harlequin MultiRIP.

The following example arranges to detect the %%CreationDate : comment and print the associated date. (Where this "printing" appears depends on where PostScript-language standard output is directed: typically it is directed to the monitor window in GUI versions of the RIP, to the shell in command-line versions, and perhaps elsewhere in embedded or custom versions.)

The example works by adding an entry to the %%actions dictionary in the %%dict dictionary; see Adding a new comment processing procedure.

            (%%dict) load (%%actions) get begin
              /CreationDate: {
                % stack contains remainder of comment; ignore
                % leading spaces -there may or may not be a
                % space after the colon
                  ( ) anchorsearch { pop } { exit } ifelse
                } loop
                (JOB REPORTS CREATION ON ) print
                (\n) print
            } bind def end
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