lib_termcap.c revision 50850 
1/****************************************************************************
2 * Copyright (c) 1998 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: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
31 *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
32 ****************************************************************************/
33
34#include <curses.priv.h>
35
36#include <termcap.h>
37#include <tic.h>
38
39#define __INTERNAL_CAPS_VISIBLE
40#include <term_entry.h>
41
42MODULE_ID("$Id: lib_termcap.c,v 1.28 1999/02/27 22:12:58 tom Exp $")
43
44/*
45   some of the code in here was contributed by:
46   Magnus Bengtsson, d6mbeng@dtek.chalmers.se
47*/
48
49char *UP;
50char *BC;
51
52#ifdef FREEBSD_NATIVE
53#undef	GCC_UNUSED
54#define	GCC_UNUSED
55extern char _nc_termcap[];	/* buffer to copy out */
56#endif
57
58/***************************************************************************
59 *
60 * tgetent(bufp, term)
61 *
62 * In termcap, this function reads in the entry for terminal `term' into the
63 * buffer pointed to by bufp. It must be called before any of the functions
64 * below are called.
65 * In this terminfo emulation, tgetent() simply calls setupterm() (which
66 * does a bit more than tgetent() in termcap does), and returns its return
67 * value (1 if successful, 0 if no terminal with the given name could be
68 * found, or -1 if no terminal descriptions have been installed on the
69 * system).  The bufp argument is ignored.
70 *
71 ***************************************************************************/
72
73int tgetent(char *bufp GCC_UNUSED, const char *name)
74{
75int errcode;
76
77	T((T_CALLED("tgetent()")));
78
79	setupterm((NCURSES_CONST char *)name, STDOUT_FILENO, &errcode);
80
81	if (errcode == 1) {
82
83		if (cursor_left)
84		    if ((backspaces_with_bs = !strcmp(cursor_left, "\b")) == 0)
85			backspace_if_not_bs = cursor_left;
86
87		/* we're required to export these */
88		if (pad_char != NULL)
89			PC = pad_char[0];
90		if (cursor_up != NULL)
91			UP = cursor_up;
92		if (backspace_if_not_bs != NULL)
93			BC = backspace_if_not_bs;
94
95		(void) baudrate();	/* sets ospeed as a side-effect */
96
97/* LINT_PREPRO
98#if 0*/
99#include <capdefaults.c>
100/* LINT_PREPRO
101#endif*/
102
103	}
104#ifdef FREEBSD_NATIVE
105	/*
106	 * This is a REALLY UGLY hack. Basically, if we originate with
107	 * a termcap source, try and copy it out.
108	 */
109	if (bufp && _nc_termcap[0])
110		strncpy(bufp, _nc_termcap, 1024);
111#endif
112
113	returnCode(errcode);
114}
115
116/***************************************************************************
117 *
118 * tgetflag(str)
119 *
120 * Look up boolean termcap capability str and return its value (TRUE=1 if
121 * present, FALSE=0 if not).
122 *
123 ***************************************************************************/
124
125int tgetflag(NCURSES_CONST char *id)
126{
127int i;
128
129	T((T_CALLED("tgetflag(%s)"), id));
130	if (cur_term != 0) {
131	    TERMTYPE *tp = &(cur_term->type);
132	    for_each_boolean(i, tp) {
133		const char *capname = ExtBoolname(tp, i, boolcodes);
134		if (!strncmp(id, capname, 2)) {
135		    /* setupterm forces invalid booleans to false */
136		    returnCode(tp->Booleans[i]);
137		}
138	    }
139	}
140	returnCode(0);	/* Solaris does this */
141}
142
143/***************************************************************************
144 *
145 * tgetnum(str)
146 *
147 * Look up numeric termcap capability str and return its value, or -1 if
148 * not given.
149 *
150 ***************************************************************************/
151
152int tgetnum(NCURSES_CONST char *id)
153{
154int i;
155
156	T((T_CALLED("tgetnum(%s)"), id));
157	if (cur_term != 0) {
158	    TERMTYPE *tp = &(cur_term->type);
159	    for_each_number(i, tp) {
160		const char *capname = ExtNumname(tp, i, numcodes);
161		if (!strncmp(id, capname, 2)) {
162		    if (!VALID_NUMERIC(tp->Numbers[i]))
163			return -1;
164		    returnCode(tp->Numbers[i]);
165		}
166	    }
167	}
168	returnCode(ERR);
169}
170
171/***************************************************************************
172 *
173 * tgetstr(str, area)
174 *
175 * Look up string termcap capability str and return a pointer to its value,
176 * or NULL if not given.
177 *
178 ***************************************************************************/
179
180char *tgetstr(NCURSES_CONST char *id, char **area GCC_UNUSED)
181{
182int i;
183
184	T((T_CALLED("tgetstr(%s,%p)"), id, area));
185	if (cur_term != 0) {
186	    TERMTYPE *tp = &(cur_term->type);
187	    for_each_string(i, tp) {
188		const char *capname = ExtStrname(tp, i, strcodes);
189		T(("trying %s", capname));
190		if (!strncmp(id, capname, 2)) {
191		    T(("found match : %s", _nc_visbuf(tp->Strings[i])));
192		    /* setupterm forces cancelled strings to null */
193#ifdef FREEBSD_NATIVE
194		    if (*area && tp->Strings[i]) {
195			strcpy(*area, tp->Strings[i]);
196			*area += strlen(tp->Strings[i]) + 1;
197		    }
198#endif
199		    returnPtr(tp->Strings[i]);
200		}
201	    }
202	}
203	returnPtr(NULL);
204}
205
206/*
207 *	char *
208 *	tgoto(string, x, y)
209 *
210 *	Retained solely for upward compatibility.  Note the intentional
211 *	reversing of the last two arguments.
212 *
213 */
214
215char *tgoto(const char *string, int x, int y)
216{
217	T((T_CALLED("tgoto(%s,%d,%d)"), string, x, y));
218	returnPtr(tparm((NCURSES_CONST char *)string, y, x));
219}
220