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/* $OpenBSD: lib_print.c,v 1.3 1998/07/23 21:19:12 millert Exp $ */
/****************************************************************************
* Copyright (c) 1998 Free Software Foundation, Inc. *
* *
* Permission is hereby granted, free of charge, to any person obtaining a *
* copy of this software and associated documentation files (the *
* "Software"), to deal in the Software without restriction, including *
* without limitation the rights to use, copy, modify, merge, publish, *
* distribute, distribute with modifications, sublicense, and/or sell *
* copies of the Software, and to permit persons to whom the Software is *
* furnished to do so, subject to the following conditions: *
* *
* The above copyright notice and this permission notice shall be included *
* in all copies or substantial portions of the Software. *
* *
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
* THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
* *
* Except as contained in this notice, the name(s) of the above copyright *
* holders shall not be used in advertising or otherwise to promote the *
* sale, use or other dealings in this Software without prior written *
* authorization. *
****************************************************************************/
/****************************************************************************
* Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
* and: Eric S. Raymond <esr@snark.thyrsus.com> *
****************************************************************************/
#include <curses.priv.h>
#include <term.h>
MODULE_ID("$From: lib_print.c,v 1.9 1998/02/11 12:13:53 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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