lib_termcap.c revision 62453 
1/****************************************************************************
2 * Copyright (c) 1998,1999,2000 Free Software Foundation, Inc.              *
3 *                                                                          *
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13 * in all copies or substantial portions of the Software.                   *
14 *                                                                          *
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16 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
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24 * holders shall not be used in advertising or otherwise to promote the     *
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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/* $FreeBSD: head/contrib/ncurses/ncurses/tinfo/lib_termcap.c 62453 2000-07-03 09:35:22Z peter $ */
35
36#include <curses.priv.h>
37
38#include <termcap.h>
39#include <tic.h>
40
41#define __INTERNAL_CAPS_VISIBLE
42#include <term_entry.h>
43
44MODULE_ID("$Id: lib_termcap.c,v 1.36 2000/02/13 01:01:26 tom Exp $")
45
46/*
47   some of the code in here was contributed by:
48   Magnus Bengtsson, d6mbeng@dtek.chalmers.se
49*/
50
51char *UP = 0;
52char *BC = 0;
53
54#ifdef FREEBSD_NATIVE
55#undef	GCC_UNUSED
56#define	GCC_UNUSED
57extern char _nc_termcap[];	/* buffer to copy out */
58#endif
59
60/***************************************************************************
61 *
62 * tgetent(bufp, term)
63 *
64 * In termcap, this function reads in the entry for terminal `term' into the
65 * buffer pointed to by bufp. It must be called before any of the functions
66 * below are called.
67 * In this terminfo emulation, tgetent() simply calls setupterm() (which
68 * does a bit more than tgetent() in termcap does), and returns its return
69 * value (1 if successful, 0 if no terminal with the given name could be
70 * found, or -1 if no terminal descriptions have been installed on the
71 * system).  The bufp argument is ignored.
72 *
73 ***************************************************************************/
74
75int
76tgetent(char *bufp GCC_UNUSED, const char *name)
77{
78    int errcode;
79
80    T((T_CALLED("tgetent()")));
81
82    setupterm((NCURSES_CONST char *) name, STDOUT_FILENO, &errcode);
83
84    if (errcode == 1) {
85
86	if (cursor_left)
87	    if ((backspaces_with_bs = !strcmp(cursor_left, "\b")) == 0)
88		backspace_if_not_bs = cursor_left;
89
90	/* we're required to export these */
91	if (pad_char != NULL)
92	    PC = pad_char[0];
93	if (cursor_up != NULL)
94	    UP = cursor_up;
95	if (backspace_if_not_bs != NULL)
96	    BC = backspace_if_not_bs;
97
98	(void) baudrate();	/* sets ospeed as a side-effect */
99
100/* LINT_PREPRO
101#if 0*/
102#include <capdefaults.c>
103/* LINT_PREPRO
104#endif*/
105
106#ifdef FREEBSD_NATIVE
107	/*
108	 * This is a REALLY UGLY hack. Basically, if we originate with
109	 * a termcap source, try and copy it out.
110	 */
111	if (bufp && _nc_termcap[0])
112		strncpy(bufp, _nc_termcap, 1024);
113#endif
114
115    }
116    returnCode(errcode);
117}
118
119/***************************************************************************
120 *
121 * tgetflag(str)
122 *
123 * Look up boolean termcap capability str and return its value (TRUE=1 if
124 * present, FALSE=0 if not).
125 *
126 ***************************************************************************/
127
128int
129tgetflag(NCURSES_CONST char *id)
130{
131    int i;
132
133    T((T_CALLED("tgetflag(%s)"), id));
134    if (cur_term != 0) {
135	TERMTYPE *tp = &(cur_term->type);
136	for_each_boolean(i, tp) {
137	    const char *capname = ExtBoolname(tp, i, boolcodes);
138	    if (!strncmp(id, capname, 2)) {
139		/* setupterm forces invalid booleans to false */
140		returnCode(tp->Booleans[i]);
141	    }
142	}
143    }
144    returnCode(0);		/* Solaris does this */
145}
146
147/***************************************************************************
148 *
149 * tgetnum(str)
150 *
151 * Look up numeric termcap capability str and return its value, or -1 if
152 * not given.
153 *
154 ***************************************************************************/
155
156int
157tgetnum(NCURSES_CONST char *id)
158{
159    int i;
160
161    T((T_CALLED("tgetnum(%s)"), id));
162    if (cur_term != 0) {
163	TERMTYPE *tp = &(cur_term->type);
164	for_each_number(i, tp) {
165	    const char *capname = ExtNumname(tp, i, numcodes);
166	    if (!strncmp(id, capname, 2)) {
167		if (!VALID_NUMERIC(tp->Numbers[i]))
168		    returnCode(ABSENT_NUMERIC);
169		returnCode(tp->Numbers[i]);
170	    }
171	}
172    }
173    returnCode(ABSENT_NUMERIC);
174}
175
176/***************************************************************************
177 *
178 * tgetstr(str, area)
179 *
180 * Look up string termcap capability str and return a pointer to its value,
181 * or NULL if not given.
182 *
183 ***************************************************************************/
184
185char *
186tgetstr(NCURSES_CONST char *id, char **area)
187{
188    int i;
189
190    T((T_CALLED("tgetstr(%s,%p)"), id, area));
191    if (cur_term != 0) {
192	TERMTYPE *tp = &(cur_term->type);
193	for_each_string(i, tp) {
194	    const char *capname = ExtStrname(tp, i, strcodes);
195	    if (!strncmp(id, capname, 2)) {
196		TR(TRACE_DATABASE,("found match : %s", _nc_visbuf(tp->Strings[i])));
197		/* setupterm forces canceled strings to null */
198		if (area != 0
199		    && *area != 0
200		    && VALID_STRING(tp->Strings[i])) {
201		    (void) strcpy(*area, tp->Strings[i]);
202		    *area += strlen(*area) + 1;
203		}
204		returnPtr(tp->Strings[i]);
205	    }
206	}
207    }
208    returnPtr(NULL);
209}
210
211/*
212 *	char *
213 *	tgoto(string, x, y)
214 *
215 *	Retained solely for upward compatibility.  Note the intentional
216 *	reversing of the last two arguments.
217 *
218 */
219
220char *
221tgoto(const char *string, int x, int y)
222{
223    T((T_CALLED("tgoto(%s,%d,%d)"), string, x, y));
224    returnPtr(tparm((NCURSES_CONST char *) string, y, x));
225}
226