1 /**************************************************************************** 2 * Copyright 2018,2020 Thomas E. Dickey * 3 * Copyright 1998-2011,2012 Free Software Foundation, Inc. * 4 * * 5 * Permission is hereby granted, free of charge, to any person obtaining a * 6 * copy of this software and associated documentation files (the * 7 * "Software"), to deal in the Software without restriction, including * 8 * without limitation the rights to use, copy, modify, merge, publish, * 9 * distribute, distribute with modifications, sublicense, and/or sell * 10 * copies of the Software, and to permit persons to whom the Software is * 11 * furnished to do so, subject to the following conditions: * 12 * * 13 * The above copyright notice and this permission notice shall be included * 14 * in all copies or substantial portions of the Software. * 15 * * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 19 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 20 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 21 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 22 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 23 * * 24 * Except as contained in this notice, the name(s) of the above copyright * 25 * holders shall not be used in advertising or otherwise to promote the * 26 * sale, use or other dealings in this Software without prior written * 27 * authorization. * 28 ****************************************************************************/ 29 30 /**************************************************************************** 31 * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 * 32 * and: Eric S. Raymond <esr@snark.thyrsus.com> * 33 * and: Thomas E. Dickey 1996-on * 34 * and: Juergen Pfeifer * 35 ****************************************************************************/ 36 37 #include <curses.priv.h> 38 39 #ifndef CUR 40 #define CUR SP_TERMTYPE 41 #endif 42 43 MODULE_ID("$Id: lib_print.c,v 1.28 2020/08/29 16:22:03 juergen Exp $") 44 45 NCURSES_EXPORT(int) 46 NCURSES_SP_NAME(mcprint) (NCURSES_SP_DCLx char *data, int len) 47 /* ship binary character data to the printer via mc4/mc5/mc5p */ 48 { 49 int result; 50 char *mybuf, *switchon; 51 size_t onsize, offsize; 52 size_t need; 53 54 errno = 0; 55 if (!HasTInfoTerminal(SP_PARM) 56 || len <= 0 57 || (!prtr_non && (!prtr_on || !prtr_off))) { 58 errno = ENODEV; 59 return (ERR); 60 } 61 62 if (prtr_non) { 63 switchon = TIPARM_1(prtr_non, len); 64 onsize = strlen(switchon); 65 offsize = 0; 66 } else { 67 switchon = prtr_on; 68 onsize = strlen(prtr_on); 69 offsize = strlen(prtr_off); 70 } 71 72 need = onsize + (size_t) len + offsize; 73 74 if (switchon == 0 75 || (mybuf = typeMalloc(char, need + 1)) == 0) { 76 errno = ENOMEM; 77 return (ERR); 78 } 79 80 _nc_STRCPY(mybuf, switchon, need); 81 memcpy(mybuf + onsize, data, (size_t) len); 82 if (offsize) 83 _nc_STRCPY(mybuf + onsize + len, prtr_off, need); 84 85 /* 86 * We're relying on the atomicity of UNIX writes here. The 87 * danger is that output from a refresh() might get interspersed 88 * with the printer data after the write call returns but before the 89 * data has actually been shipped to the terminal. If the write(2) 90 * operation is truly atomic we're protected from this. 91 */ 92 result = (int) write(TerminalOf(SP_PARM)->Filedes, mybuf, need); 93 94 /* 95 * By giving up our scheduler slot here we increase the odds that the 96 * kernel will ship the contiguous clist items from the last write 97 * immediately. 98 */ 99 #ifndef _NC_WINDOWS 100 (void) sleep(0); 101 #endif 102 free(mybuf); 103 return (result); 104 } 105 106 #if NCURSES_SP_FUNCS && !defined(USE_TERM_DRIVER) 107 NCURSES_EXPORT(int) 108 mcprint(char *data, int len) 109 { 110 return NCURSES_SP_NAME(mcprint) (CURRENT_SCREEN, data, len); 111 } 112 #endif 113