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/* $OpenBSD: lib_print.c,v 1.2 1997/12/03 05:21:27 millert Exp $ */
/***************************************************************************
* COPYRIGHT NOTICE *
****************************************************************************
* ncurses is copyright (C) 1992-1995 *
* Zeyd M. Ben-Halim *
* zmbenhal@netcom.com *
* Eric S. Raymond *
* esr@snark.thyrsus.com *
* *
* Permission is hereby granted to reproduce and distribute ncurses *
* by any means and for any fee, whether alone or as part of a *
* larger distribution, in source or in binary form, PROVIDED *
* this notice is included with any such distribution, and is not *
* removed from any of its header files. Mention of ncurses in any *
* applications linked with it is highly appreciated. *
* *
* ncurses comes AS IS with no warranty, implied or expressed. *
* *
***************************************************************************/
#include <curses.priv.h>
#include <term.h>
MODULE_ID("Id: lib_print.c,v 1.8 1996/12/21 14:24:06 tom Exp $")
int mcprint(char *data, int len)
/* ship binary character data to the printer via mc4/mc5/mc5p */
{
char *mybuf, *switchon;
size_t onsize, offsize, res;
errno = 0;
if (!prtr_non && (!prtr_on || !prtr_off))
{
errno = ENODEV;
return(ERR);
}
if (prtr_non)
{
switchon = tparm(prtr_non, len);
onsize = strlen(switchon);
offsize = 0;
}
else
{
switchon = prtr_on;
onsize = strlen(prtr_on);
offsize = strlen(prtr_off);
}
if ((mybuf = malloc(onsize + len + offsize + 1)) == (char *)NULL)
{
errno = ENOMEM;
return(ERR);
}
(void) strcpy(mybuf, switchon);
memcpy(mybuf + onsize, data, len);
if (offsize)
(void) strcpy(mybuf + onsize + len, prtr_off);
/*
* We're relying on the atomicity of UNIX writes here. The
* danger is that output from a refresh() might get interspersed
* with the printer data after the write call returns but before the
* data has actually been shipped to the terminal. If the write(2)
* operation is truly atomic we're protected from this.
*/
res = write(cur_term->Filedes, mybuf, onsize + len + offsize);
/*
* By giving up our scheduler slot here we increase the odds that the
* kernel will ship the contiguous clist items from the last write
* immediately.
*/
(void) sleep(0);
free(mybuf);
return(res);
}
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