termcap.form

操作系统SunOS 4.1.3版本的源码

#ifndef lint
static	char sccsid[] = "@(#)termcap.form 1.1 92/07/30 SMI"; /* from S5R3 1.3 */
#endif

/*
 * Simulation of termcap using terminfo.
 */

#include "curses.ext"

/*
 * These are declared so people won't get undefineds if they use
 * old documentation.  We don't do anything with them.
 */
char *UP;
char *BC;
char PC;
short ospeed;

/* ARGSUSED */
int
tgetent(bp, name)
char *bp, *name;
{
	int rv;

	if (setupterm(name, 1, &rv) >= 0)
		/* Leave things as they were (for compatibility) */
		reset_shell_mode();
	return rv;
}

/* Make a 2 letter code into an integer we can switch on easily */
#define two(s1, s2) (s1 + 256*s2)
#define twostr(str) two(*str, str[1])

static
char *
stripdelays(inbuf, outbuf, size)
register char *inbuf, *outbuf;
register int size;
{
	char *saveoutbuf = outbuf;
	
	if (inbuf == NULL)
		return 0;
	else
		while (size && *inbuf)
			if (*inbuf == '$' && *(inbuf+1) == '<')
				while (*inbuf && *inbuf++ != '>')
					;
			else {
				size--;
				*outbuf++ = *inbuf++;
			}
	return saveoutbuf;
}

int
tgetflag(id)
char *id;
{
	register int rv;
	register char *p;
	char stripped[16];

	switch (twostr(id)) {
	BOOLS
	/* Special cases that do not have exact terminfo equivalents */
	case two('b','s'):
		/* bs: true if ^H moves the cursor left */
		p = stripdelays(cursor_left, stripped, 16);
		rv = p && *p==8 && p[1] == 0;
		break;
	case two('p','t'):
		/* pt: true if terminal has ^I tabs every 8 spaces */
		p = stripdelays(tab, stripped, 16);
		rv = p && *p==9 && p[1] == 0;
		break;
	case two('n','c'):
		/* cr: true if ^M doesn't return the cursor */
		p = stripdelays(carriage_return, stripped, 16);
		rv = ! (p && *p==13 && p[1] == 0);
		break;
	case two('n','s'):
		/* ns: true if no way to scroll the terminal */
		rv = scroll_forward == NULL;
		break;
	default: rv = 0;
	}
	return rv;
}

int
tgetnum(id)
char *id;
{
	int rv;

	switch (twostr(id)) {
	NUMS
	default: rv = -1;
	}
	return rv;
}

/*
 * Return the string capability for capability "id".  We also copy
 * it into *area for upward compatibility with a few programs that
 * actually expect it to be copied, at a slight cost in speed.
 */
char *
tgetstr(id, area)
char *id, **area;
{
	register char *rv, *p, *p2;
	register int two_id = twostr(id);
	char stripped[16], morestripped[16];

	switch (two_id) {
	STRS
		case two('b','c'):
			/* bc: char the moves cursor left */
			p = stripdelays(cursor_left, stripped, 16);
			if (p && strcmp(p, "\b") == 0)
				rv = NULL;
			else
				rv = cursor_left;
			break;
		case two('n','l'):
			/* nl: string that does both index and cursor_down */
			p = stripdelays(cursor_down, stripped, 16);
			p2 = stripdelays(scroll_forward, morestripped, 16);
			if (p && p2 && strcmp(p, p2) == 0)
				rv = cursor_down;
			else
				rv = NULL;
			break;
		}
	if (rv && area && *area) {
		extern char *strcpy();
		strcpy(*area, rv);
		*area += strlen(rv) + 1;
	}
	return rv;
}