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Make talk ctype-aware, handle controns as tcsh does, use human-oriented

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scroll, most of changes from 1.x
This commit is contained in:
Andrey A. Chernov 1994-09-20 08:07:52 +00:00
parent c4278e8b60
commit edee6d3816
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=2929
2 changed files with 22 additions and 38 deletions
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56
usr.bin/talk/display.c
View File

@ -40,6 +40,7 @@ static char sccsid[] = "@(#)display.c 8.1 (Berkeley) 6/6/93";
* displaying of text
*/
#include "talk.h"
#include <ctype.h>
xwin_t my_win;
xwin_t his_win;
@ -64,20 +65,24 @@ max(a,b)
*/
display(win, text, size)
register xwin_t *win;
register char *text;
register unsigned char *text;
int size;
{
register int i;
char cch;
for (i = 0; i < size; i++) {
if (*text == '\n') {
xscroll(win, 0);
if (*text == '\n' || *text == '\r') {
waddch(win->x_win, '\n');
getyx(win->x_win, win->x_line, win->x_col);
text++;
continue;
}
/* erase character */
if (*text == win->cerase) {
if ( *text == win->cerase
|| *text == 010 /* BS */
|| *text == 0177 /* DEL */
) {
wmove(win->x_win, win->x_line, max(--win->x_col, 0));
getyx(win->x_win, win->x_line, win->x_col);
waddch(win->x_win, ' ');
@ -91,7 +96,9 @@ display(win, text, size)
* the beginning of a word or the beginning of
* the line.
*/
if (*text == win->werase) {
if ( *text == win->werase
|| *text == 027 /* ^W */
) {
int endcol, xcol, i, c;
endcol = win->x_col;
@ -117,7 +124,9 @@ display(win, text, size)
continue;
}
/* line kill */
if (*text == win->kill) {
if ( *text == win->kill
|| *text == 025 /* ^U */
) {
wmove(win->x_win, win->x_line, 0);
wclrtoeol(win->x_win);
getyx(win->x_win, win->x_line, win->x_col);
@ -130,15 +139,14 @@ display(win, text, size)
text++;
continue;
}
if (win->x_col == COLS-1) {
/* check for wraparound */
xscroll(win, 0);
if (*text == '\7') {
_putchar(*text);
text++;
continue;
}
if (*text < ' ' && *text != '\t') {
if (!isprint(*text) && *text != '\t') {
waddch(win->x_win, '^');
getyx(win->x_win, win->x_line, win->x_col);
if (win->x_col == COLS-1) /* check for wraparound */
xscroll(win, 0);
cch = (*text & 63) + 64;
waddch(win->x_win, cch);
} else
@ -164,27 +172,3 @@ readwin(win, line, col)
wmove(win, oldline, oldcol);
return (c);
}
/*
* Scroll a window, blanking out the line following the current line
* so that the current position is obvious
*/
xscroll(win, flag)
register xwin_t *win;
int flag;
{
if (flag == -1) {
wmove(win->x_win, 0, 0);
win->x_line = 0;
win->x_col = 0;
return;
}
win->x_line = (win->x_line + 1) % win->x_nlines;
win->x_col = 0;
wmove(win->x_win, win->x_line, win->x_col);
wclrtoeol(win->x_win);
wmove(win->x_win, (win->x_line + 1) % win->x_nlines, win->x_col);
wclrtoeol(win->x_win);
wmove(win->x_win, win->x_line, win->x_col);
}

4
usr.bin/talk/init_disp.c
View File

@ -72,14 +72,14 @@ init_display()
my_win.x_nlines = LINES / 2;
my_win.x_ncols = COLS;
my_win.x_win = newwin(my_win.x_nlines, my_win.x_ncols, 0, 0);
scrollok(my_win.x_win, FALSE);
scrollok(my_win.x_win, TRUE);
wclear(my_win.x_win);
his_win.x_nlines = LINES / 2 - 1;
his_win.x_ncols = COLS;
his_win.x_win = newwin(his_win.x_nlines, his_win.x_ncols,
my_win.x_nlines+1, 0);
scrollok(his_win.x_win, FALSE);
scrollok(his_win.x_win, TRUE);
wclear(his_win.x_win);
line_win = newwin(1, COLS, my_win.x_nlines, 0);