ncursesw-morphos/ncurses/tinfo/lib_termcap.c

/****************************************************************************
 * Copyright (c) 1998,1999,2000 Free Software Foundation, Inc.              *
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 * copy of this software and associated documentation files (the            *
 * "Software"), to deal in the Software without restriction, including      *
 * without limitation the rights to use, copy, modify, merge, publish,      *
 * distribute, distribute with modifications, sublicense, and/or sell       *
 * copies of the Software, and to permit persons to whom the Software is    *
 * furnished to do so, subject to the following conditions:                 *
 *                                                                          *
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 * in all copies or substantial portions of the Software.                   *
 *                                                                          *
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 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
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 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
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/****************************************************************************
 *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
 *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
 ****************************************************************************/

#include <curses.priv.h>

#include <termcap.h>
#include <tic.h>

#define __INTERNAL_CAPS_VISIBLE
#include <term_entry.h>

MODULE_ID("$Id: lib_termcap.c,v 1.37 2000/09/16 20:30:16 tom Exp $")

/*
   some of the code in here was contributed by:
   Magnus Bengtsson, d6mbeng@dtek.chalmers.se
*/

char *UP = 0;
char *BC = 0;

/***************************************************************************
 *
 * tgetent(bufp, term)
 *
 * In termcap, this function reads in the entry for terminal `term' into the
 * buffer pointed to by bufp. It must be called before any of the functions
 * below are called.
 * In this terminfo emulation, tgetent() simply calls setupterm() (which
 * does a bit more than tgetent() in termcap does), and returns its return
 * value (1 if successful, 0 if no terminal with the given name could be
 * found, or -1 if no terminal descriptions have been installed on the
 * system).  The bufp argument is ignored.
 *
 ***************************************************************************/

int
tgetent(char *bufp GCC_UNUSED, const char *name)
{
    int errcode;

    T((T_CALLED("tgetent()")));

    setupterm((NCURSES_CONST char *) name, STDOUT_FILENO, &errcode);

    if (errcode == 1) {

	if (cursor_left)
	    if ((backspaces_with_bs = !strcmp(cursor_left, "\b")) == 0)
		backspace_if_not_bs = cursor_left;

	/* we're required to export these */
	if (pad_char != NULL)
	    PC = pad_char[0];
	if (cursor_up != NULL)
	    UP = cursor_up;
	if (backspace_if_not_bs != NULL)
	    BC = backspace_if_not_bs;

	(void) baudrate();	/* sets ospeed as a side-effect */

/* LINT_PREPRO
#if 0*/
#include <capdefaults.c>
/* LINT_PREPRO
#endif*/

    }
    returnCode(errcode);
}

/***************************************************************************
 *
 * tgetflag(str)
 *
 * Look up boolean termcap capability str and return its value (TRUE=1 if
 * present, FALSE=0 if not).
 *
 ***************************************************************************/

int
tgetflag(NCURSES_CONST char *id)
{
    int i;

    T((T_CALLED("tgetflag(%s)"), id));
    if (cur_term != 0) {
	TERMTYPE *tp = &(cur_term->type);
	for_each_boolean(i, tp) {
	    const char *capname = ExtBoolname(tp, i, boolcodes);
	    if (!strncmp(id, capname, 2)) {
		/* setupterm forces invalid booleans to false */
		returnCode(tp->Booleans[i]);
	    }
	}
    }
    returnCode(0);		/* Solaris does this */
}

/***************************************************************************
 *
 * tgetnum(str)
 *
 * Look up numeric termcap capability str and return its value, or -1 if
 * not given.
 *
 ***************************************************************************/

int
tgetnum(NCURSES_CONST char *id)
{
    int i;

    T((T_CALLED("tgetnum(%s)"), id));
    if (cur_term != 0) {
	TERMTYPE *tp = &(cur_term->type);
	for_each_number(i, tp) {
	    const char *capname = ExtNumname(tp, i, numcodes);
	    if (!strncmp(id, capname, 2)) {
		if (!VALID_NUMERIC(tp->Numbers[i]))
		    returnCode(ABSENT_NUMERIC);
		returnCode(tp->Numbers[i]);
	    }
	}
    }
    returnCode(ABSENT_NUMERIC);
}

/***************************************************************************
 *
 * tgetstr(str, area)
 *
 * Look up string termcap capability str and return a pointer to its value,
 * or NULL if not given.
 *
 ***************************************************************************/

char *
tgetstr(NCURSES_CONST char *id, char **area)
{
    int i;

    T((T_CALLED("tgetstr(%s,%p)"), id, area));
    if (cur_term != 0) {
	TERMTYPE *tp = &(cur_term->type);
	for_each_string(i, tp) {
	    const char *capname = ExtStrname(tp, i, strcodes);
	    if (!strncmp(id, capname, 2)) {
		TR(TRACE_DATABASE,("found match : %s", _nc_visbuf(tp->Strings[i])));
		/* setupterm forces canceled strings to null */
		if (area != 0
		    && *area != 0
		    && VALID_STRING(tp->Strings[i])) {
		    (void) strcpy(*area, tp->Strings[i]);
		    *area += strlen(*area) + 1;
		}
		returnPtr(tp->Strings[i]);
	    }
	}
    }
    returnPtr(NULL);
}