Проект OpenNet: MAN ppd_emit_to_file (3) Библиотечные вызовы (FreeBSD и Linux)

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ppd_emit_to_file (3)

>> ppd_emit_to_file (3) ( Linux man: Библиотечные вызовы )

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);

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