1/**************************************************************************** 2 * Copyright (c) 1998-2002,2006 Free Software Foundation, Inc. * 3 * * 4 * Permission is hereby granted, free of charge, to any person obtaining a * 5 * copy of this software and associated documentation files (the * 6 * "Software"), to deal in the Software without restriction, including * 7 * without limitation the rights to use, copy, modify, merge, publish, * 8 * distribute, distribute with modifications, sublicense, and/or sell * 9 * copies of the Software, and to permit persons to whom the Software is * 10 * furnished to do so, subject to the following conditions: * 11 * * 12 * The above copyright notice and this permission notice shall be included * 13 * in all copies or substantial portions of the Software. * 14 * * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 16 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 18 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 21 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 22 * * 23 * Except as contained in this notice, the name(s) of the above copyright * 24 * holders shall not be used in advertising or otherwise to promote the * 25 * sale, use or other dealings in this Software without prior written * 26 * authorization. * 27 ****************************************************************************/ 28 29/**************************************************************************** 30 * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 * 31 * and: Eric S. Raymond <esr@snark.thyrsus.com> * 32 ****************************************************************************/ 33 34#include <curses.priv.h> 35 36#include <term.h> 37 38MODULE_ID("$Id: lib_print.c,v 1.16 2006/11/26 00:26:34 tom Exp $") 39 40NCURSES_EXPORT(int) 41mcprint(char *data, int len) 42/* ship binary character data to the printer via mc4/mc5/mc5p */ 43{ 44 char *mybuf, *switchon; 45 size_t onsize, offsize, res; 46 47 errno = 0; 48 if (!cur_term || (!prtr_non && (!prtr_on || !prtr_off))) { 49 errno = ENODEV; 50 return (ERR); 51 } 52 53 if (prtr_non) { 54 switchon = TPARM_1(prtr_non, len); 55 onsize = strlen(switchon); 56 offsize = 0; 57 } else { 58 switchon = prtr_on; 59 onsize = strlen(prtr_on); 60 offsize = strlen(prtr_off); 61 } 62 63 if (switchon == 0 64 || (mybuf = typeMalloc(char, onsize + len + offsize + 1)) == 0) { 65 errno = ENOMEM; 66 return (ERR); 67 } 68 69 (void) strcpy(mybuf, switchon); 70 memcpy(mybuf + onsize, data, (unsigned) len); 71 if (offsize) 72 (void) strcpy(mybuf + onsize + len, prtr_off); 73 74 /* 75 * We're relying on the atomicity of UNIX writes here. The 76 * danger is that output from a refresh() might get interspersed 77 * with the printer data after the write call returns but before the 78 * data has actually been shipped to the terminal. If the write(2) 79 * operation is truly atomic we're protected from this. 80 */ 81 res = write(cur_term->Filedes, mybuf, onsize + len + offsize); 82 83 /* 84 * By giving up our scheduler slot here we increase the odds that the 85 * kernel will ship the contiguous clist items from the last write 86 * immediately. 87 */ 88 (void) sleep(0); 89 90 free(mybuf); 91 return (res); 92} 93