editsingle.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 1.6 */
#include <stdio.h>
#include <ctype.h>
#include <curses.h>
#include "wish.h"
#include "token.h"
#include "winp.h"
#include "fmacs.h"
#include "terror.h"
#define ischange(x) (x == TOK_BACKSPACE || x == TOK_CLEAR || x == TOK_ERASE || x == TOK_DC ||\
x == TOK_EOL || x == TOK_SEOL || x == TOK_UNDO || \
x == TOK_IC)
#define isslash(x) (x == '\b' || (isspace(x) && x != ' '))
editsingle(tok)
token tok;
{
register token rettok;
register int row, col;
rettok = TOK_NOP;
if (tok == TOK_NOP)
return rettok;
row = Cfld->currow;
col = Cfld->curcol;
/*
if ( isprint(tok) && !(Flags & I_NOEDIT))
*/
if ( isascii(tok) && isprint(tok) && !(Flags & I_NOEDIT))
{
Flags |= I_CHANGED;
if (Flags & I_BLANK) {
/*
* check to see if character typed should clear field
*/
if ((Cfld->rows == 1) && (row == 0) && (col == 0)) {
fclear();
if (Flags & I_SCROLL)
clearbuf(); /* clear scroll buff */
}
}
if (Flags & I_INVISIBLE) { /* invisible field */
int count;
if (Valptr == NULL)
Valptr = Value;
count = Valptr - Value + 1;
if ( count < FIELDBYTES) {
*Valptr++ = tok;
*Valptr = '\0';
if (++count == FIELDBYTES) /* abs for autoadvance */
rettok = TOK_WRAP;
}
else
rettok = TOK_WRAP; /* abs was beep() */
}
else {
fputchar(tok); /* print character */
if (col == LASTCOL) /* end of line */
rettok = TOK_WRAP;
else
col++;
}
}
else if (ischange(tok)) {
Flags |= I_CHANGED;
if (Flags & I_NOEDIT) { /* no-edit field */
beep();
goto alldone;
}
switch(tok) {
case TOK_CLEAR:
case TOK_EOL:
fgo(row, col = 0);
case TOK_SEOL:
fclearline();
if (Currtype == SINGLE && (Flags & I_SCROLL))
clearbuf();
break;
case TOK_BACKSPACE:
if (col > 0) {
if (col == LASTCOL && freadchar(row, col) != ' ') {
fputchar(' ');
fgo(row, col);
}
else {
fgo(row, --col);
fdelchar();
finschar(' ');
}
}
else
rettok = TOK_BACKSPACE;
break;
case TOK_TAB:
/* tab */
while (col < LASTCOL && (col & 7))
col++;
break;
case TOK_BTAB:
/* back tab */
while (col && (col & 7))
col--;
break;
case TOK_IC:
/*
* insert char and check for word wrapping
* due to line shift to the right
*/
if (Currtype == SINGLE && (Flags & I_SCROLL)) {
shiftbuf(RIGHT);
finschar(' ');
}
else if (wrap() == TRUE)
rettok = TOK_WRAP;
else
finschar(' ');
break;
case TOK_DC:
case TOK_ERASE:
/* delete char */
fdelchar();
if (Currtype == SINGLE && (Flags & I_SCROLL))
shiftbuf(LEFT);
break;
case TOK_UNDO:
/* enhacement */
beep();
break;
}
}
else {
switch(tok) {
case TOK_ENTER:
case TOK_RETURN:
/* carriage return */
rettok = TOK_RETURN;
break;
case TOK_LEFT:
/* move left */
if (col == 0)
rettok = TOK_LEFT;
else
fgo(row, --col);
break;
case TOK_RIGHT:
/* move right */
if (col == LASTCOL)
rettok = TOK_RIGHT;
else
fgo(row, ++col);
break;
default:
/* pass it back */
rettok = tok;
}
}
alldone:
Cfld->curcol = col;
Flags &= ~(I_BLANK);
return(rettok);
}