/* $OpenBSD: lib_print.c,v 1.4 2003/03/18 16:55:54 millert Exp $ */ /**************************************************************************** * Copyright (c) 1998,2000 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 1992,1995 * * and: Eric S. Raymond * ****************************************************************************/ #include #include MODULE_ID("$From: lib_print.c,v 1.13 2000/12/10 02:55:07 tom Exp $") NCURSES_EXPORT(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 (!cur_term || (!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); } res = onsize + len + offsize + 1; if ((mybuf = typeMalloc(char, res)) == (char *) 0) { errno = ENOMEM; return (ERR); } (void) strlcpy(mybuf, switchon, res); memcpy(mybuf + onsize, data, len); if (offsize) (void) strlcpy(mybuf + onsize + len, prtr_off, res - onsize - len); /* * 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); }