hbcups provides access to the CUPS printing library.
Function Reference
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cupsGetDefault() --> cPrinterName
Returns the CUPS name of the default printer on the default server,
or an empty string if no printer is configured as default printer.
cupsGetDests() --> aPrinterNames
Returns a list of all CUPS printers on the default server.
cupsPrintFile( cPrinterName, cFileName, cTitle, [ aOptions | hOptions ] )
--> nJobNumber
Prints the named file on the named printer (on the default server), using
the given title. Options may be passed as an array of strings of the form
"option=value" or as a hash of options and values (again expressed as
character strings). Returns the job number, or 0 on error.
Refer to the CUPS documentation for more details of these operations, including
a list of valid printing options.