1 /* $NetBSD: setupterm.c,v 1.4 2013/06/07 13:16:18 roy Exp $ */
2
3 /*
4 * Copyright (c) 2009, 2011 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 1.4 2013/06/07 13:16:18 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
ti_setupterm(TERMINAL ** nterm,const char * term,int fildes,int * errret)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 *nterm = NULL;
74 reterr(0, "TERM environment variable not set");
75 }
76 if (fildes == STDOUT_FILENO && !isatty(fildes))
77 fildes = STDERR_FILENO;
78
79 *nterm = calloc(1, sizeof(**nterm));
80 if (*nterm == NULL)
81 reterr(-1, "not enough memory to create terminal structure");
82
83 error = _ti_getterm(*nterm, term, 0);
84 if (error != 1) {
85 del_curterm(*nterm);
86 *nterm = NULL;
87 switch (error) {
88 case -1:
89 reterr(error, "cannot access the terminfo database");
90 /* NOTREACHED */
91 case 0:
92 reterrarg(error,
93 "%s: terminal not listed in terminfo datase",
94 term);
95 /* NOTREACHED */
96 default:
97 reterr(-1, "unknown error");
98 /* NOTREACHED */
99 }
100 }
101
102 (*nterm)->fildes = fildes;
103 _ti_setospeed(*nterm);
104 if (t_generic_type(*nterm))
105 reterrarg(0, "%s: generic terminal", term);
106 if (t_hard_copy(*nterm))
107 reterrarg(1, "%s: hardcopy terminal", term);
108 /* POSIX requires 1 for success */
109 if (errret)
110 *errret = 1;
111 return OK;
112 }
113
114 int
setupterm(const char * term,int fildes,int * errret)115 setupterm(const char *term, int fildes, int *errret)
116 {
117 TERMINAL *nterm;
118 int ret;
119
120 if (errret != NULL)
121 *errret = ERR;
122 ret = ti_setupterm(&nterm, term, fildes, errret);
123 if (nterm != NULL)
124 set_curterm(nterm);
125 return ret;
126 }
127