1 /* $NetBSD: setupterm.c,v 1.1 2010/02/03 15:16:32 roy Exp $ */ 2 3 /* 4 * Copyright (c) 2009 The NetBSD Foundation, Inc. 5 * 6 * This code is derived from software contributed to The NetBSD Foundation 7 * by Roy Marples. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 #include <sys/cdefs.h> 31 __RCSID("$NetBSD: setupterm.c,v 1.1 2010/02/03 15:16:32 roy Exp $"); 32 33 #include <assert.h> 34 #include <err.h> 35 #include <stdio.h> 36 #include <stdlib.h> 37 #include <strings.h> 38 #include <unistd.h> 39 #include <term_private.h> 40 #include <term.h> 41 42 #define reterr(code, msg) \ 43 do { \ 44 if (errret == NULL) \ 45 errx(EXIT_FAILURE, msg); \ 46 else { \ 47 *errret = code; \ 48 return ERR; \ 49 } \ 50 } while (0 /* CONSTCOND */) 51 52 #define reterrarg(code, msg, arg) \ 53 do { \ 54 if (errret == NULL) \ 55 errx(EXIT_FAILURE, msg, arg); \ 56 else { \ 57 *errret = code; \ 58 return ERR; \ 59 } \ 60 } while (0 /* CONSTCOND */) 61 62 63 int 64 ti_setupterm(TERMINAL **nterm, const char *term, int fildes, int *errret) 65 { 66 int error; 67 68 _DIAGASSERT(nterm != NULL); 69 70 if (term == NULL) 71 term = getenv("TERM"); 72 if (term == NULL || *term == '\0') 73 reterr(-1, "TERM environment variable not set"); 74 if (fildes == STDOUT_FILENO && !isatty(fildes)) 75 fildes = STDERR_FILENO; 76 77 *nterm = calloc(1, sizeof(**nterm)); 78 if (*nterm == NULL) 79 reterr(-1, "not enough memory to create terminal structure"); 80 81 error = _ti_getterm(*nterm, term, 0); 82 if (error != 1) { 83 free(*nterm); 84 *nterm = NULL; 85 switch (error) { 86 case -1: 87 reterr(error, "cannot access the terminfo database"); 88 /* NOTREACHED */ 89 case 0: 90 reterrarg(error, 91 "%s: terminal not listed in terminfo datase", 92 term); 93 /* NOTREACHED */ 94 default: 95 reterr(-1, "unknown error"); 96 /* NOTREACHED */ 97 } 98 } 99 100 (*nterm)->fildes = fildes; 101 _ti_setospeed(*nterm); 102 if (t_generic_type(*nterm)) 103 reterrarg(0, "%s: generic terminal", term); 104 if (t_hard_copy(*nterm)) 105 reterrarg(1, "%s: hardcopy terminal", term); 106 /* POSIX requires 1 for success */ 107 if (errret) 108 *errret = 1; 109 return OK; 110 } 111 112 int 113 setupterm(const char *term, int fildes, int *errret) 114 { 115 TERMINAL *nterm; 116 int ret; 117 118 if (errret != NULL) 119 *errret = ERR; 120 ret = ti_setupterm(&nterm, term, fildes, errret); 121 if (nterm != NULL) 122 set_curterm(nterm); 123 return ret; 124 } 125