ppd_emit_to_file(3)

NAME
ppd_emit_to_file, ppd_emit_to_fd - Output device specific code.

SYNOPSIS
#include <ppd/ppd.h>

gboolean ppd_emit( PpdFile * ppd,FILE *fp,PpdSectionOrder section );
gboolean ppd_emitfd( PpdFile * ppd, int fd,PpdSectionOrder section );

DESCRIPTION
The ppd_emit_* functions output the device specific code appropriate to the specified section that has not already been emitted.. The PpdFile pointer is obtained from opening a PPD file via the ppd_load(3) family of functions. The section can be any one of the following:

PPD_ORDER_ANY
    Option code can be anywhere in the file

PPD_ORDER_DOCUMENT
    Option code must be in the DocumentSetup section

PPD_ORDER_EXIT
    Option code must be sent prior to the document

PPD_ORDER_JCL
    Option code must be sent as a JCL command

PPD_ORDER_PAGE
    Option code must be in the PageSetup section

PPD_ORDER_PROLOG
    Option code must be in the Prolog section

The sections PPD_ORDER_DOCUMENT and PPD_ORDER_PAGE will also output code from the PPD_ORDER_ANY section.

Once a code section has been emitted it is marked as such and will not be emitted unless it is re-marked.

EXAMPLE

	/* Setup code to emitted */
        ppd_mark_defaults(ppd);
        ppd_mark_option(ppd,"Duplex","DuplexNoTumble");
        ppd_mark_option(ppd,"PageSize","A4");

	/* Emit initial code (including any reset and JCL code) */
        ppd_emit_to_file(ppd,stdout,PPD_ORDER_EXIT);
        fputs(ppd->jcl_begin->str,stdout);
        ppd_emit_to_file(ppd, stdout, PPD_ORDER_JCL);
        fputs(ppd->jcl_ps->str, stdout);

	/* Any header comments go here */
	...

	/* Prolog section */
        printf("%%%%BeginProlog);
        ppd_emit_to_file(ppd, stdout, PPD_ORDER_PROLOG);
        printf("%%%%EndProlog);

	/* Setup section */
        printf("%%%%BeginSetup);
        ppd_emit_to_file(ppd, stdout, PPD_ORDER_DOCUMENT);
        printf("%%%%EndSetup);

	/* Main document begins */
	for (...) {
		printf("%%%%Page: 1 1);

		/* Re-mark so that this is emitted on each page */
        	ppd_mark_option(ppd,"PageSize","A4");
        	printf("%%%%PageSetup);
        	ppd_emit_to_file(ppd, stdout, PPD_ORDER_PAGE);
        	printf("%%%%EndPageSetup);

		/* Page info goes here */
		...
	}

	/* Send ending JCL code */
        fputs(ppd->jcl_end->str,stdout);

SEE ALSO
ppd_file_new(3), ppd_file_free(3)