singleline.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
/*
* Copyright (c) 1985 AT&T
* All Rights Reserved
*/
#ident "%Z%%M% %I% %E% SMI" /* SVr4.0 1.11 */
#include <ctype.h>
#include <curses.h>
#include "token.h"
#include "winp.h"
#include "fmacs.h"
#include "wish.h"
#define HALFLINE (int)(Cfld->cols / 2)
static token _fixed();
static token _virtual();
/*
* get single line of input
*/
singleline(tok)
token tok;
{
if (Flags & I_SCROLL)
return(_virtual(tok));
else
return(_fixed(tok));
}
static token
_fixed(tok)
token tok;
{
register token rettok;
register int col;
static int lastwaswrap = FALSE;
rettok = TOK_NOP;
switch(tok) {
case TOK_BACKSPACE:
case TOK_LEFT:
case TOK_RIGHT:
case TOK_IL:
beep(); /* do nothing and beep */
break;
case TOK_ENTER:
case TOK_RETURN:
if (!(Flags & I_NOEDIT))
rettok = TOK_SAVE;
else
fgo(0, 0);
break;
case TOK_DL:
Flags |= I_CHANGED;
fgo(0, 0);
fclearline();
break;
case TOK_WRAP:
if (Flags & I_AUTOADV && !(Flags & I_NOEDIT))
rettok = TOK_SAVE;
else
if (lastwaswrap == TRUE)
beep();
if (Cfld->curcol >= LASTCOL)
fgo(0, LASTCOL);
break;
case TOK_HOME:
case TOK_BEG:
fgo(0, 0);
break;
case TOK_SHOME:
case TOK_END:
col = LASTCOL;
while (col >= 0 && freadchar(0, col) == ' ')
col--;
fgo(0, (col == LASTCOL || col == 0 ? col : col+1));
break;
default:
rettok = tok;
}
lastwaswrap = (tok == TOK_WRAP ? TRUE : FALSE);
return(rettok);
}
static token
_virtual(tok)
token tok;
{
register token rettok;
register int col;
rettok = TOK_NOP;
switch(tok) {
case TOK_IL:
beep();
break;
case TOK_BACKSPACE:
if (scroll_left(HALFLINE) == FALSE)
beep();
else {
fgo(0, Cfld->curcol - 1);
fdelchar();
}
break;
case TOK_ENTER:
case TOK_RETURN:
while (scroll_left(Cfld->cols) == TRUE) /* abs k14 */
;
if (!(Flags & I_NOEDIT))
rettok = TOK_SAVE;
else
fgo(0, 0);
break;
case TOK_DL:
Flags |= I_CHANGED;
fgo(0, 0);
fclearline();
Buffoffset = 0;
clearbuf();
break;
case TOK_LEFT:
if (scroll_left(HALFLINE) == FALSE)
beep();
break;
case TOK_RIGHT:
if (scroll_right(HALFLINE, FALSE) == FALSE)
beep();
break;
case TOK_WRAP:
if (scroll_right(HALFLINE, FALSE) == FALSE) {
Bufflast += HALFLINE;
growbuf(Bufflast);
/** growbuf(Buffsize + HALFLINE); abs k17 */
syncbuf(Buffoffset, 0, 0); /* abs f15 */
scroll_right(HALFLINE, TRUE);
}
fgo(0, Cfld->curcol + 1);
break;
case TOK_HOME:
case TOK_BEG:
while (scroll_left(Cfld->cols) == TRUE)
;
fgo(0, 0);
break;
case TOK_SHOME:
case TOK_END:
while (scroll_right(Cfld->cols, FALSE) == TRUE)
;
col = LASTCOL;
while (col >= 0 && freadchar(0, col) == ' ')
col--;
fgo(0, (col == LASTCOL || col == 0 ? col : col+1));
break;
default:
rettok = tok;
}
return(rettok);
}