1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* 28 * initscr.c 29 * 30 * XCurses Library 31 * 32 * Copyright 1986, 1994 by Mortice Kern Systems Inc. All rights reserved. 33 * 34 */ 35 36 #ifdef M_RCSID 37 #ifndef lint 38 static char rcsID[] = "$Header: /rd/src/libc/xcurses/rcs/initscr.c 1.5 1995/09/28 16:47:03 ant Exp $"; 39 #endif 40 #endif 41 42 #include <private.h> 43 #include <errno.h> 44 #include <stdlib.h> 45 46 static char nomem_msg[] = m_textstr( 47 3139, "Failed to allocate required memory.\n", "E" 48 ); 49 static char noterm_msg[] = m_textstr( 50 202, "Unknown terminal \"%s\".\n", "E term" 51 ); 52 static char dumb_msg[] = m_textstr( 53 3140, "Terminal \"%s\" has insufficent capabilities for Curses.\n", 54 "E term" 55 ); 56 57 /*f 58 * Initialize XCurses for use with a single terminal. stdin and stdout 59 * are used. If a program needs an indication of error conditions, 60 * so that it can continue to run in a line-oriented mode, use newterm() 61 * instead. 62 */ 63 WINDOW * 64 initscr() 65 { 66 WINDOW *w; 67 SCREEN *sp; 68 int i, n, begy; 69 char *term, *err; 70 71 #ifdef M_CURSES_TRACE 72 __m_trace("initscr(void)"); 73 #endif 74 75 errno = 0; 76 sp = newterm((char *) 0, stdout, stdin); 77 78 if (sp == (SCREEN *) 0) { 79 err = errno == ENOMEM ? nomem_msg : noterm_msg; 80 goto error_1; 81 } 82 83 (void) set_term(sp); 84 85 /* We require some form of cursor positioning and the ability to 86 * clear the end of a line. These abilities should be sufficient 87 * to provide minimum full screen support. 88 */ 89 if (1 < lines 90 && cursor_address == (char *) 0 91 && row_address == (char *) 0 92 && (cursor_up == (char *) 0 || cursor_down == (char *) 0) 93 && (parm_up_cursor == (char *) 0 || parm_down_cursor == (char *) 0)) { 94 err = dumb_msg; 95 goto error_3; 96 } 97 98 if ((1 < lines && cursor_address == (char *) 0) 99 && column_address == (char *) 0 100 && (cursor_left == (char *) 0 || cursor_right == (char *) 0) 101 && (parm_left_cursor == (char *) 0 || parm_right_cursor == (char *)0)) { 102 err = dumb_msg; 103 goto error_3; 104 } 105 106 if (clr_eol == (char *) 0) { 107 err = dumb_msg; 108 goto error_3; 109 } 110 111 return __m_return_pointer("initscr", stdscr); 112 error_3: 113 (void) delwin(stdscr); 114 error_2: 115 (void) endwin(); 116 (void) delscreen(sp); 117 error_1: 118 /* newterm()/setupterm() attempts to load $TERM, else if 119 * $TERM is not defined, the vendor's default terminal type. 120 */ 121 if ((term = getenv("TERM")) == (char *) 0) 122 term = M_TERM_NAME; 123 124 (void) fprintf(stderr, m_strmsg(err), term); 125 error_0: 126 exit(1); 127 return (0); /* keep gcc happy */ 128 } 129