1/**************************************************************************** 2 * Copyright (c) 1998-2001,2005 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: Thomas E. Dickey <dickey@clark.net> 1998 31 * 32 * $Id: ditto.c,v 1.5 2005/04/16 16:35:49 tom Exp $ 33 * 34 * The program illustrates how to set up multiple screens from a single 35 * program. Invoke the program by specifying another terminal on the same 36 * machine by specifying its device, e.g., 37 * ditto /dev/ttyp1 38 */ 39#include <test.priv.h> 40#include <sys/stat.h> 41#include <errno.h> 42 43typedef struct { 44 FILE *input; 45 FILE *output; 46 SCREEN *screen; 47} DITTO; 48 49static void 50failed(const char *s) 51{ 52 perror(s); 53 ExitProgram(EXIT_FAILURE); 54} 55 56static void 57usage(void) 58{ 59 fprintf(stderr, "usage: ditto [terminal1 ...]\n"); 60 ExitProgram(EXIT_FAILURE); 61} 62 63static FILE * 64open_tty(char *path) 65{ 66 FILE *fp; 67 struct stat sb; 68 69 if (stat(path, &sb) < 0) 70 failed(path); 71 if ((sb.st_mode & S_IFMT) != S_IFCHR) { 72 errno = ENOTTY; 73 failed(path); 74 } 75 fp = fopen(path, "a+"); 76 if (fp == 0) 77 failed(path); 78 printf("opened %s\n", path); 79 return fp; 80} 81 82int 83main(int argc GCC_UNUSED, 84 char *argv[]GCC_UNUSED) 85{ 86 int j; 87 int active_tty = 0; 88 DITTO *data; 89 90 if (argc <= 1) 91 usage(); 92 93 if ((data = (DITTO *) calloc((unsigned) argc, sizeof(DITTO))) == 0) 94 failed("calloc data"); 95 96 data[0].input = stdin; 97 data[0].output = stdout; 98 for (j = 1; j < argc; j++) { 99 data[j].input = 100 data[j].output = open_tty(argv[j]); 101 } 102 103 /* 104 * If we got this far, we have open connection(s) to the terminal(s). 105 * Set up the screens. 106 */ 107 for (j = 0; j < argc; j++) { 108 active_tty++; 109 data[j].screen = newterm((char *) 0, /* assume $TERM is the same */ 110 data[j].output, 111 data[j].input); 112 if (data[j].screen == 0) 113 failed("newterm"); 114 cbreak(); 115 noecho(); 116 scrollok(stdscr, TRUE); 117 } 118 119 /* 120 * Loop, reading characters from any of the inputs and writing to all 121 * of the screens. 122 */ 123 for (;;) { 124 int ch; 125 set_term(data[0].screen); 126 ch = getch(); 127 if (ch == ERR) 128 continue; 129 if (ch == 4) 130 break; 131 for (j = 0; j < argc; j++) { 132 set_term(data[j].screen); 133 addch(UChar(ch)); 134 refresh(); 135 } 136 } 137 138 /* 139 * Cleanup and exit 140 */ 141 for (j = argc - 1; j >= 0; j--) { 142 set_term(data[j].screen); 143 endwin(); 144 } 145 ExitProgram(EXIT_SUCCESS); 146} 147